CN1548677A - Concrete hollow slab - Google Patents

Abstract

A concrete hollow slab, including the steel bar concrete (1), the empty stomach formwork (2) is enclosed and contained in the steel bar concrete (1), characterized by that at least two empty stomach formworks (2) are arranged alternatively, form the inner rib die cavity of cast-in-place concrete (3) between the opposing surfaces of two empty stomach formworks (2), there is at least one interval that links the empty stomach formwork (2) into the assembly that props up the pulling member (4) in the inner rib die cavity (3), the cast-in-place steel bar concrete (1) forms the hidden dense rib (5) of cast-in-place steel bar concrete in the inner rib die cavity (3). Thus, the empty stomach form (2) is by the interval brace tension member (4) to link an organic whole, form the empty stomach form assembly, therefore while constructing in situ hollow slab, the empty stomach form (2) is changed from laying alone to laying in groups, it is very convenient to position each other, difficult to misplace and influence the construction quality of the hollow slab, the efficiency of construction is greatly improved at the same time, suitable for various cast-in-situ reinforced concrete or prestressed reinforcement concrete hollow floor, roof, base slab, wall, empty stomach bridge use.

Description

A hollow concrete slab

(1) Technical field

The invention relates to a concrete hollow slab.

(2) Background technology

At present, the cast-in-place reinforced concrete hollow slab is a widely used floor structure, which has the advantages of fast construction speed, small structural height, flexible division of indoor areas, and no need for ceiling decoration. The lightweight permanent tire molds filled with it are available in various hollow tubes and boxes, hollow or solid. For example, the patent No. ZL99232921.3, which the applicant applied for on March 10, 1999, is a utility model patent named "thin-walled tube for filling cast-in-place reinforced concrete", which consists of a hard thin-walled tube and two plugs. Used in hollow slabs as a lightweight permanent tire mold. Another example is the application number 99115666.8 filed by the applicant on November 29, 1999, and the name is "fiber-reinforced thin-walled box for filling cast-in-place reinforced concrete and its manufacturing method". In the slab, it can meet the needs of grid and honeycomb evacuated concrete to form a densely ribbed hollow slab. The thin-walled box is filled in the concrete, which is not only used as a filling part, but also as a hollow formwork member, and plays the role of a permanent formwork. This kind of hollow slab includes reinforced concrete and hollow formwork, and the hollow formwork is wrapped in reinforced concrete. During construction, the hollow formwork needs to be laid out individually, which is inconvenient to locate each other and easily misplaced, which affects the construction quality of the hollow slab. At the same time, it also affects the construction efficiency of the hollow slab. Therefore, it is urgent to develop a new type of concrete hollow slab.

(3) Contents of the invention

The purpose of the present invention is to provide a concrete hollow slab, which has the characteristics of convenient construction, high efficiency, easy to ensure construction quality, etc., and also has the characteristics of simple structure, high strength, and low cost.

The solution of the present invention is based on the prior art, including reinforced concrete, fasting formwork, and the fasting formwork is wrapped in the reinforced concrete, and it is characterized in that at least two fasting formworks are arranged alternately, and the two fasting formworks The cast-in-place concrete inner rib mold cavity is formed between the opposite surfaces, and there is at least one spacer brace for connecting the hollow formwork into components in the inner rib mold cavity, and the cast-in-place reinforced concrete is formed in the inner rib mold cavity. dense rib. In this way, since the hollow members used in the hollow slab are arranged alternately by at least two hollow formworks, the hollow formworks are connected into one by spacer braces to form the hollow formwork components. Changing from a single layout to a group layout, it is very convenient to locate each other, and it is not easy to be dislocated to affect the construction quality of the hollow slab. At the same time, the construction efficiency is also greatly improved, thereby achieving the purpose of the present invention. In addition, the hollow slab has simple structure and high strength. , low cost, etc., suitable for all kinds of cast-in-place reinforced concrete or prestressed reinforced concrete hollow floors, roofs, foundation slabs, walls, hollow bridges, especially for hollow beamless floors.

The present invention is also characterized in that there are 2, 3 or more components of the hollow formwork. In this way, according to different design requirements, a plurality of hollow formwork components can be used to evacuate a large amount of non-stressed concrete in the slab, greatly reducing the weight of the hollow slab itself, so as to meet the needs of hollow slabs with different structural forms.

The present invention is also characterized in that the components of the hollow formwork shells are arranged alternately to form main dense ribs of cast-in-place reinforced concrete, and the main dense ribs and hidden dense ribs form a structural system in which the main dense ribs and hidden dense ribs intersect. In this way, the structure of the combination of the main dense rib and the hidden dense rib is better in force bearing and force transmission performance.

The present invention is also characterized in that the interval braces and the empty formwork are firmly consolidated, and the interval braces are wrapped in the concrete ribs. In this way, when the hollow formwork is applied in the concrete hollow slab, the connection is firm, has good rigidity, and is convenient for handling and construction.

The present invention is also characterized in that the spacer braces and the empty formwork are flexibly connected. In this way, when the hollow formwork is applied to the concrete hollow slab, the hollow formwork can be flexibly installed and disassembled according to different situations and needs, so as to facilitate the adjustment of the width of the inner rib cavity and the arrangement of steel bars to meet the requirements of use.

The present invention is also characterized in that the spacer brace is at least one of rods, cables, plates, tendons, wires, thin strips, and piers. In this way, the diversification of the materials and structures of the braces can meet the different design requirements of the product and the construction needs of different hollow slabs.

The present invention is also characterized in that the rods, plates, and pier spacer spacers are hollow or porous hollow spacer spacers. In this way, while reducing the weight of the hollow member, the hollow or porous hollow stretcher also improves the flexural strength and rigidity of the stretcher, and facilitates the layout of various pipelines in the hollow plate.

The present invention is also characterized in that the spacer braces are located at least one of the center or periphery or four corners of the cavity of the inner rib. In this way, when the hollow formwork is applied to the concrete hollow slab, the positions of the braces can be designed freely and regularly, and the application function of the hollow member in the concrete can be improved conveniently and simply.

The present invention is also characterized in that the spacer braces are metal pieces. In this way, the metal spacer braces have the characteristics of high rigidity and high strength, which makes the connection of the hollow formwork more firm and reliable, and can be used as a reinforced skeleton of the cast-in-place reinforced concrete concealed ribs in the hollow slab.

The present invention is also characterized in that the metal spacer braces are butted by at least two metal parts, or the metal parts are welded to the mold wall of the inner rib mold cavity, or the metal parts are welded to the embedded parts of the inner rib mold cavity wall, or the metal parts It is fixed with embedded parts or mold cavity walls with screws or bolts. In this way, the metal parts are quickly and conveniently connected by welding, screws or bolts, etc., which greatly improves the work efficiency.

The present invention is also characterized in that the spacer bracing member is a U, I, X, T, ○, ㄈ, □-shaped bracing member made of a steel plate or a reinforcing bar or a metal pipe bracing member. In this way, metal braces with various cross-sectional shapes can meet different connection strength and rigidity requirements of the hollow formwork.

The present invention is also characterized in that at least one end of the spacer brace is provided with a steel sheet, which is punched with holes, grids, ratchets or ratchet edges, and is integrated with the mold wall of the hollow formwork. In this way, the steel sheets punched with holes, grids, ratchet heads or ratchet edges are tightly embedded with the mold wall of the hollow formwork, making the connection more stable.

The present invention is also characterized in that at least one end of the spacer brace has a steel wire mesh, steel mesh or fiber mesh, and is integrated with the mold wall of the hollow formwork. In this way, the diversification of the connecting materials in the tension member and the mold wall of the hollow formwork facilitates the selection of materials during production, reduces the production cost, and is beneficial to reduce the construction cost.

The present invention is also characterized in that at least one end of the spacer brace is divided into two or more bent flat strips, and is integrated with the mold wall surface or inside of the hollow formwork. In this way, one end of the support piece is divided into more than two forked flat strips, so that the hollow formwork has a good stability and balance performance, and reduces the loss rate during installation and construction when the hollow formwork is applied to the concrete hollow slab.

The present invention is also characterized in that steel wires, fibers or elongated pieces protrude from at least one end of the spacer brace. In this way, when the hollow formwork is applied to the concrete hollow slab, the steel wires, fibers or slender pieces protruding from the support members can facilitate the binding, installation and anti-floating of the hollow members during the construction process, and at the same time, bond with the cast-in-place concrete to form Overall, the integrity of the hollow plate is better.

The present invention is also characterized in that at least one end of the spacer brace is bent and extended into the mold wall of the hollow formwork for anchoring. In this way, the braces are combined with the mold wall, so that the braces have good flexural rigidity and strength, ensuring a stable and reliable connection between the hollow formwork shells, facilitating construction and reducing construction costs.

The present invention is also characterized in that the spacer braces are parallel to each other, orthogonal, oblique, and vertical. In this way, when the hollow formwork is applied to the concrete hollow slab, the struts are arranged in the above-mentioned various layout methods, so that the struts and the hollow components can jointly form a plurality of different force systems inside the hollow components to meet different uses. needs.

The present invention is also characterized in that the spacer is a hollow tube, at least one end of the hollow tube is a tube wall with an opening bent into more than two pieces, and the bent tube wall is fixed on the surface of the mold wall of the hollow formwork or clamped inside the mold wall. In this way, the opening at the end of the hollow brace is bent into more than two tube walls and fixed on the mold wall, which has good rigidity and stability. During transportation, installation, and construction, it will not be disintegrated due to breakage and falling off of the supporting parts, which facilitates construction and helps reduce construction costs.

The present invention is also characterized in that the hollow tube spacer spacer is filled and compacted into a composite tubular spacer spacer. In this way, the densely filled composite tubular stay has good bending and shear resistance, which enhances the strength of the stay, improves the overall performance of the hollow member, and correspondingly improves the integrity of the hollow plate.

The present invention is also characterized in that the cavities in the at least one hollow spacer brace communicate with at least two hollow formwork cavities. In this way, the cavity formwork connected by the hollow spacer braces has good sound wave dispersion ability, and it has good sound insulation and sound absorption effects after being applied to concrete, and at the same time, it is also convenient for the construction and layout of various pipelines.

The present invention is also characterized in that the spacer is a flat strip, and one end of the flat strip is bent and clamped in the mold wall of the hollow formwork. In this way, the combination of the flat braces with good vertical bending stiffness and the mold wall of the hollow formwork makes the hollow members light and stable. In the hollow slab, the cast-in-place concrete and the flat braces are combined , so that the mechanical performance of the hollow slab structure is more reasonable.

The present invention is also characterized in that the outer opening of the inner rib mold cavity is a bell mouth or a stepped mouth, and the corresponding concealed ribs are trumpet-shaped or stepped-shaped concealed ribs. In this way, during the construction of the hollow slab, the setting of the inner rib mold cavity at the bell mouth or the step mouth can make the cast-in-place concrete pour into the inner rib mold cavity conveniently and densely when the hollow member is applied in the concrete.

The present invention is also characterized in that at least one of internal corners, chamfers, grooves, pits and holes is provided in the mold cavity of the inner ribs. In this way, during the construction of the hollow slab, concrete is poured into the inner corners, chamfers, grooves, pits, and holes to form a local cast-in-place concrete reinforcement structure, which makes the cast-in-place concrete hollow slab structure more reasonable.

The present invention is also characterized in that at least one of bumps, convex lines and male angles is arranged in the mold cavity of the inner rib. In this way, in the hollow slab, the unstressed parts of the cast-in-place concrete are evacuated through the bumps, and the prefabricated parts are reinforced on the weak stressed parts by the convex strips and external corners, so that the concrete hollow slab has a more reasonable stress form.

The present invention is also characterized in that the internal corners, chamfers, grooves, convex lines or combinations thereof in the mold cavity of the inner ribs are orthogonal, oblique, parallel or vertical. In this way, the concrete is poured into the inner corners, chamfers, and grooves to form orthogonal, oblique, parallel or vertical cast-in-place concrete, so that the mechanical properties of the concrete hollow slab are more reasonable.

The present invention is also characterized in that the spacer stays are integrally formed with at least one inner rib cavity mold wall to form a spacer assembly. In this way, the integrally formed spacer component has very good integrity, which further improves the overall performance of the hollow plate.

The present invention is also characterized in that the spacer component is integrated with the hollow formwork by gluing, welding, riveting or inserting. In this way, the multiple joining modes of the spacer component and the hollow formwork can conveniently and quickly complete the connection between the formworks, thereby improving the construction efficiency of the hollow formwork.

The present invention is also characterized in that there are at least two inner rib cavities, which are parallel or orthogonal to each other. In this way, the hollow concrete poured into the mold cavity of the inner rib forms cast-in-situ concrete hidden ribs parallel to each other or at an intersection, which optimizes the internal structure and mechanical performance of the entire hollow concrete structure.

The present invention is also characterized in that said spacer brace protrudes or protrudes from the inner rib cavity. In this way, during the construction of the hollow slab, the hollow formwork shell can be conveniently transported, installed and constructed through the supporting parts protruding or protruding from the cavity of the inner rib.

The present invention is also characterized in that at least two or more empty formwork shells are provided with reinforcements, or the reinforcements are exposed at the same time, or the reinforcements pass through the inner rib cavity to form a whole, and the reinforcements are steel bars, steel wires, steel mesh, steel wire mesh , expanded metal, fiber, fibrous mesh, thin metal strip, braided tape or packing tape. In this way, the strength of the hollow formwork provided with reinforcements is greatly improved, and the diversity of reinforcement materials facilitates the selection of materials during production, reducing the cost of hollow slabs.

The invention is also characterized in that said reinforcement is a thin strip. In this way, when the hollow formwork is applied to the concrete hollow slab, the good flexibility of the wide surface of the thin strip and the rigidity of the narrow surface have been fully exerted in the hollow formwork and the cast-in-place concrete hollow slab, and can reduce the The wall thickness of the thin hollow formwork reduces the weight of the hollow formwork and the hollow plate, saves materials and reduces costs.

The present invention is also characterized in that the hollow formwork is an empty formwork with at least one surface opening or hole. In this way, it is convenient for laying out various reserved holes or pipelines.

The present invention is also characterized in that at least one of internal corners, chamfers, grooves, pits and holes is provided on the hollow formwork other than the inner rib cavity. In this way, the concrete poured into the inner corner and other parts reasonably strengthens the cast-in-situ hidden ribs formed between the hollow members.

The present invention is also characterized in that at least one of bumps, protruding lines and male corners is provided on the hollow formwork other than the inner rib formwork cavity. In this way, after the concrete is poured, it is combined with the cast-in-place concrete to form a cast-in-place hidden rib reinforced by the prefabricated part.

The present invention is also characterized in that the above-mentioned internal angles, chamfers, grooves, ridges, and external angles are orthogonal, oblique, parallel or perpendicular to each other or to each other. In this way, the cast-in-place concrete is combined with the inner corner, chamfer, groove, convex strip, and outer corner to form reinforced parts of the cast-in-place concrete that are orthogonal, oblique, parallel or overpassed, which improves the stress of the hollow concrete structure. and power transmission performance.

The present invention is also characterized in that the hollow formwork is a polyhedron, a polyhedron with internal angles, a corrugated surface, an arc-angled polyhedron, an occlusal corrugated surface, a curved surface, a polycurved surface or a combination thereof. In this way, various forms of hollow formwork can meet the needs of different occasions when applied to concrete.

The present invention is also characterized in that the hollow formwork is a metal bellows or a plastic bellows. In this way, metal interlocking bellows and plastic bellows have the advantages of light weight, high strength, and convenient production, transportation, and installation, which are beneficial to reducing the construction cost of hollow slabs.

The present invention is also characterized in that the metal bellows or spacer braces are fixed by welding, riveting, or fastening. In this way, the metal bellows and the braces can be conveniently connected and fixed.

The invention is also characterized in that at least one of the empty formwork or its appendages has locating feet. In this way, during the construction of the hollow slab, the positioning feet can control the spacing and thickness of each cast-in-place concrete, so as to meet the design requirements.

The present invention is also characterized in that there is an overhanging bottom plate under the hollow formwork. In this way, during the construction of the hollow slab, the support of the bottom formwork can be omitted, which saves a lot of manpower and material resources, improves the construction efficiency, and reduces the construction cost.

The present invention is also characterized in that there is a groove at the joint between the hollow formwork and the bottom plate. In this way, during the construction of the hollow slab, the hollow formwork can be firmly contained in the cast-in-place concrete, and at the same time, an I-shaped hidden rib can be formed to improve the mechanical properties of the hollow slab.

The present invention is also characterized in that reinforcements are clamped in the hollow formwork, bottom plate, and spacer braces. In this way, the hollow formwork, the bottom plate, and the spacer braces are further strengthened, and the hollow formwork is effectively guaranteed not to be damaged during the construction process when the hollow formwork is constructed.

The present invention is also characterized in that reinforcements are exposed on the wall, bottom plate, and spacer braces of the inner rib cavity of the hollow formwork. In this way, the exposed reinforcements and the cast-in-place concrete are firmly wrapped around the wall, the bottom plate and the spacer braces of the inner rib mold cavity, which further improves the integrity of the concrete hollow slab.

The present invention is also characterized in that at least one of a stiffening plate, a stiffening rod, and a reinforcing rib is arranged in the hollow formwork, or at least one of a stiffening piece, a stiffening rod, or a reinforcing rib is exposed at the same time, or at the same time there is a reinforcing things exposed. In this way, prefabricated parts such as stiffeners, stiffeners, and ribs are combined with cast-in-place concrete to form a structure combining cast-in-place and prefabrication, thereby making the concrete hollow slab structure safer and more reliable.

The present invention is also characterized in that at least one mold wall surface of the hollow formwork shell is a metal corrugated surface. In this way, the metal corrugated surface has high strength and strong deformation resistance, which can better ensure the regularity and uniformity of the hollow form. The structure is precise and regular.

The present invention is also characterized in that the wall of the inner rib mold cavity of the hollow formwork is a metal corrugated wall or a cement reinforcement product wall or other sealing plates. In this way, the inner rib mold cavity wall made of metal corrugated wall or cement reinforcement product wall or other sealing board has the characteristics of high strength, high rigidity and strong deformation resistance, which fully guarantees the regularity of the inner rib mold cavity on the hollow member , When the hollow formwork is applied to the concrete hollow slab, it can ensure that the cast-in-place concrete structure formed after the concrete is poured in it is accurate and regular.

The invention is also characterized in that at least two hollow forms are formed simultaneously. In this way, the simultaneous molding of the two hollow formworks improves the integrity and construction efficiency of the hollow components.

The present invention is also characterized in that the main dense ribs, hidden dense ribs or combinations thereof are provided with threading pipes or water pipes or prestressed steel bars. In this way, after the pouring of the hollow slab is completed, it is convenient and simple to lay out circuit pipelines, water supply and drainage and fire protection, and does not occupy the effective use space of the building. In addition, the setting of prestressed steel bars can greatly improve the load bearing capacity of the hollow slab.

The present invention is also characterized in that the lower bottom of the concealed dense rib and the lower bottom of the main dense rib are flush with the lower bottom of the main frame beam to form a beamless concrete hollow slab. In this way, the hollow slab without exposed beams at the bottom greatly improves the use function of the building and enables the arbitrary separation of building spaces.

(4) Description of drawings

Fig. 1 is a schematic structural diagram of Embodiment 1 of the present invention. In Figure 1, 1 is reinforced concrete, 2 is hollow formwork, 3 is inner rib mold cavity, 4 is spacer support, 5 is cast-in-place reinforced concrete concealed ribs, in the drawings, the numbers are the same, and their descriptions same. As shown in Figure 1, a plurality of fasting formworks 2 are wrapped in reinforced concrete 1, and the fasting formworks 2 are arranged in pairs, and the opposite surfaces of the fasting formworks 2 form the cast-in-place concrete inner rib cavity 3, and the inner ribs There are a plurality of spacer braces 4 in the mold cavity 3 that connect the fasting formwork 2 into components, and the cast-in-place reinforced concrete 1 is poured into the inner rib mold cavity 3 to form the cast-in-situ reinforced concrete hidden ribs 5 .

Fig. 2 is a schematic structural view of Embodiment 2 of the present invention, in which a plurality of hollow formwork shells 2 are wrapped in reinforced concrete 1, and the components formed by hollow formwork shells 2 are arranged alternately with each other, and concrete is poured within the distance to form main dense ribs 6, and the main ribs 6 are formed. The dense ribs 6 and the secondary dense ribs 5 in the inner rib cavity 3 form a structural system in which the main hidden dense ribs intersect.

Fig. 3 is a schematic structural view of Embodiment 3 of the present invention, a plurality of hollow formwork shells 2 are contained in reinforced concrete 1, and the spacer braces 4 are flexibly connected to the hollow formwork shells 2.

Fig. 4 is the structural representation of embodiment 4 of the present invention, and a plurality of fasting formwork shells 2 are contained in the reinforced concrete 1, and its spacer braces 4 are rods, and the braces 4 can also be cables, plates, tendons, A combination of one or more of wire, thin strip, pier.

Fig. 5 is a structural schematic diagram of Embodiment 5 of the present invention. A plurality of hollow formwork shells 2 are wrapped in reinforced concrete 1, and its spacer braces 4 are located at the four corners of the inner rib mold cavity 3, and the spacer braces 4 can also be located The central or peripheral position of the inner rib cavity 3.

Fig. 6 is a schematic structural view of Embodiment 6 of the present invention, a plurality of hollow formwork shells 2 are wrapped in reinforced concrete 1, and the spacer braces 4 are metal parts, shown as steel bars.

Fig. 7 is a structural schematic diagram of Embodiment 7 of the present invention, a plurality of hollow formwork shells 2 are wrapped in reinforced concrete 1, and the spacer support members 4 are welded by metal parts and the embedded parts on the wall of the inner rib cavity 3 .

Fig. 8 is a structural schematic diagram of Embodiment 8 of the present invention, a plurality of hollow formwork shells 2 are wrapped in reinforced concrete 1, and the spacer braces 4 are braces with a cross-sectional shape of ○ shape made of steel plates, and the braces 4. It can also be a support member made of steel plate with a cross-sectional shape of U, I, X, T, ㄈ, □ shape, or it can also be a steel bar or metal pipe support member.

Fig. 9 is a schematic structural view of Embodiment 9 of the present invention. A plurality of hollow formwork shells 2 are wrapped in reinforced concrete 1. There is a steel sheet at one end of the spacer brace 4, and a spine is punched on the steel sheet. The mold wall of the hollow mold shell 2 is embedded and solidified into one.

Fig. 10 is a schematic structural view of Embodiment 10 of the present invention. A plurality of fasting formworks 2 are wrapped in reinforced concrete 1. There is a steel wire mesh at one end of the spacer 4, and the steel wire mesh is embedded in the mold wall of the fasting formwork 2. Integrate, the spacer 4 also can have expanded metal or fiber mesh and the mold wall of empty stomach formwork 2 to be embedded and solidly integrated into one at both ends.

Fig. 11 is a schematic structural view of Embodiment 11 of the present invention. A plurality of hollow formwork shells 2 are wrapped in reinforced concrete 1, and one end of the spacer support member 4 is divided into two forked and bent flat strips. The inside of the mold wall of 2 is embedded into one body.

Fig. 12 is a schematic structural view of Embodiment 12 of the present invention. A plurality of hollow formwork shells 2 are wrapped in reinforced concrete 1, and steel wires protrude from one end of the spacer 4, and one end of the strut 4 can also be For fibers or elongated pieces.

Fig. 13 is a schematic structural view of Embodiment 13 of the present invention, a plurality of fasting formworks 2 are wrapped in reinforced concrete 1, and one end of the spacer brace 4 is bent and extended into the mold wall of the fasting formwork 2 for anchoring.

Fig. 14 is a schematic structural view of Embodiment 14 of the present invention. A plurality of hollow formwork shells 2 are wrapped in reinforced concrete 1, and the spacer support members 4 are hollow tubes, and one end of the hollow tubes has an open bend or two pieces of tube walls. , the bent tube wall is fixed inside the die wall of the hollow formwork shell 2.

Fig. 15 is a structural schematic diagram of Embodiment 15 of the present invention, a plurality of hollow formworks 2 are wrapped in reinforced concrete 1, and the spacer braces 4 are filled with hollow tubes or composite tubular braces.

Fig. 16 is a schematic structural view of Embodiment 16 of the present invention, a plurality of hollow formworks 2 are wrapped in reinforced concrete 1, and the spacer braces 4 are flat strips bent at one end and clamped in the mold wall of the hollow formwork 2.

Fig. 17 is a schematic structural view of Embodiment 17 of the present invention. A plurality of fasting formworks 2 are wrapped in reinforced concrete 1, and the outer openings of the inner rib cavity 3 on the fasting formworks 2 are bell mouths and step mouths. Trumpet-shaped and step-shaped concealed ribs 5 are correspondingly formed after concrete.

Fig. 18 is a structural schematic diagram of Embodiment 18 of the present invention. A plurality of fasting formwork shells 2 are wrapped in reinforced concrete 1, and inner rib mold cavities 3 on the fasting stomach formwork shells 2 are provided with inner corners 7, chamfered corners 8, and concave corners. A combination of pits 10 and holes 11.

Fig. 19 is a structural schematic diagram of Embodiment 19 of the present invention, a plurality of hollow formworks 2 are contained in reinforced concrete 1, and a combination of chamfers 8 and grooves 9 is provided in the cavity 3 of the inner ribs.

Fig. 20 is a schematic structural view of Embodiment 20 of the present invention, a plurality of hollow formworks 2 are wrapped in reinforced concrete 1, and the inner rib cavity 3 is provided with a combination of bumps 12, convex strips 13 and inner corners.

Fig. 21 is a schematic structural view of Embodiment 21 of the present invention. A plurality of hollow formwork shells 2 are wrapped in reinforced concrete 1, and the inner corners 7, chamfers 8, grooves 9 and convex lines 13 in the inner rib mold cavity 3 The combination is arranged in parallel and interchange.

FIG. 22 is a schematic structural view of Embodiment 22 of the present invention. A plurality of hollow formwork shells 2 are wrapped in reinforced concrete 1 , and spacer components 4 are integrally formed with the mold walls of inner rib cavity 3 to form spacer components 14 .

Fig. 23 is a schematic structural view of Embodiment 23 of the present invention, a plurality of hollow formworks 2 are wrapped in reinforced concrete 1, and the spacer components 14 are riveted with the hollow formworks 2 to form a whole. The spacer component 14 and the hollow formwork 2 can also be integrally formed by gluing, welding or plugging.

Fig. 24 is a schematic structural view of Embodiment 24 of the present invention, a plurality of hollow formwork shells 2 are wrapped in reinforced concrete 1, and spacer braces 4 protrude from the inner rib cavity 3.

Fig. 25 is a schematic structural view of Embodiment 25 of the present invention, a plurality of fasting formworks 2 are wrapped in reinforced concrete 1, reinforcements 15 are arranged in the walls of the fasting formworks 2, and at the same time, there are reinforcements on the fasting formworks 2 15 is exposed, and its reinforcement 15 is a thin strip, which can also be one or more of steel bar, steel wire, steel mesh, steel wire mesh, steel mesh, fiber, fiber mesh, thin metal strip, braided belt or packing belt combination.

Fig. 26 is a schematic structural view of Embodiment 26 of the present invention, a plurality of hollow formworks 2 are wrapped in reinforced concrete 1, and the hollow formwork 2 is an open stomach formwork with one surface open.

Fig. 27 is a structural schematic diagram of Embodiment 27 of the present invention. A plurality of fasting formwork shells 2 are wrapped in reinforced concrete 1, and the fasting formwork shells 2 other than the inner rib cavity 3 are provided with inner corners 7, chamfered corners 8, and concave corners. A combination of grooves 9, pits 10, and holes 11.

Fig. 28 is a schematic structural view of Embodiment 28 of the present invention. A plurality of fasting formwork shells 2 are wrapped in reinforced concrete 1, and the hollow formwork shells 2 other than the inner rib cavity 3 are provided with bumps 12, convex strips 13 and positive combination of angles.

Fig. 29 is a schematic structural view of Embodiment 29 of the present invention, a plurality of hollow formworks 2 are wrapped in reinforced concrete 1, and there are a plurality of positioning feet 16 on the hollow formwork 2.

Fig. 30 is a schematic structural view of Embodiment 30 of the present invention, a plurality of hollow formworks 2 are wrapped in reinforced concrete 1, and the lower part of the hollow formwork 2 has an overhanging bottom plate 17.

Figure 31 is a schematic structural view of Example 31 of the present invention, a plurality of fasting formwork shells 2 are wrapped in reinforced concrete 1, and a combination of stiffening plates 18, stiffening rods 19, and reinforcing ribs 20 are arranged inside the hollow formwork shells 2, and at the same time, Stiffeners 18, stiffeners 19, ribs 20 are partially exposed and combined with cast-in-place concrete, and reinforcements 15 also protrude from the exposed parts of stiffeners 18, stiffeners 19, and ribs 20.

Fig. 32 is a schematic structural view of Example 32 of the present invention, a plurality of hollow formworks 2 are wrapped in reinforced concrete 1, and the wall of the inner rib cavity 3 of the hollow formwork 2 is a metal corrugated wall.

Fig. 33 is a schematic structural view of Embodiment 33 of the present invention. A plurality of hollow formwork shells 2 are wrapped in reinforced concrete 1. Water pipes 22 and prestressed tendons 23 are arranged in the main dense ribs 6, and threading lines are arranged in the hidden dense ribs 5. Tube 21.

Fig. 34 is a schematic structural view of Embodiment 34 of the present invention. A plurality of hollow formwork shells 2 are wrapped in reinforced concrete 1, and the lower bottom of hidden rib 5, the lower bottom of main dense rib 6 and the main rib 6 are formed after pouring concrete. The lower bottoms of the frame beams 24 are flush to form beamless concrete hollow plates.

(5) Specific implementation methods

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

As shown in the accompanying drawings, the present invention includes reinforced concrete 1 and fasting formwork 2, and the fasting formwork 2 is wrapped in the reinforced concrete 1. It is characterized in that at least two fasting formworks 2 are arranged alternately. The cast-in-place concrete inner rib mold cavity 3 is formed between the opposite surfaces, and there is at least one spacer brace 4 connecting the empty stomach formwork 2 into an assembly in the inner rib mold cavity 3, and the cast-in-place reinforced concrete 1 is in the inner rib mold cavity 3 Form cast-in-place reinforced concrete concealed ribs 5 . Fig. 1 is a schematic structural diagram of Embodiment 1 of the present invention. In Figure 1, 1 is reinforced concrete, 2 is hollow formwork, 3 is inner rib mold cavity, 4 is spacer support, 5 is cast-in-place reinforced concrete concealed ribs, in the drawings, the numbers are the same, and their descriptions same. As shown in Figure 1, a plurality of fasting formworks 2 are wrapped in reinforced concrete 1, and the fasting formworks 2 are arranged alternately in twos. There are a plurality of interval braces 4 in the mold cavity 3 that connect the fasting formwork 2 into components, and the cast-in-place reinforced concrete 1 is poured into the inner rib mold cavity 3 to form the cast-in-situ reinforced concrete hidden ribs 5 .

The present invention is also characterized in that there are 2, 3 or more components of the hollow formwork 2 . As shown in Fig. 2, two components composed of a plurality of hollow formwork shells 2 are contained in the cast-in-place reinforced concrete hollow slab.

The present invention is also characterized in that the components of the hollow formwork 2 are arranged alternately to form the main dense ribs 6 of cast-in-place reinforced concrete, and the main dense ribs 6 and the concealed dense ribs 5 form a main and secondary intersecting structural system. . Fig. 2 is a schematic structural view of Embodiment 2 of the present invention, a plurality of fasting formwork shells 2 are wrapped in reinforced concrete 1, and the components formed by fasting hollow formwork shells 2 are arranged alternately with each other, and concrete is poured within the interval to form main dense ribs 6, and main dense ribs 6 are formed. The ribs 6 and the hidden ribs 5 in the inner rib cavity 3 constitute a primary and secondary intersecting structural system.

The present invention is also characterized in that the spacer 4 and the empty formwork 2 are firmly consolidated, and the spacer 4 is wrapped in the concrete rib 5 . As shown in Figure 2, a plurality of fasting formwork shells 2 are wrapped in reinforced concrete 1, and the spacer braces 4 are firmly consolidated with the fasting formwork shells 2, and the spacer stretchers 4 are wrapped in the concrete ribs 5 in

The present invention is also characterized in that the spacer 4 and the hollow formwork 2 are flexibly connected. Fig. 3 is a schematic structural view of Embodiment 3 of the present invention, a plurality of hollow formwork shells 2 are contained in reinforced concrete 1, and the spacer braces 4 are flexibly connected to the hollow formwork shells 2.

The present invention is also characterized in that the spacer 4 is at least one of rods, cables, plates, tendons, wires, thin strips, and piers. Fig. 4 is the structural representation of embodiment 4 of the present invention, and a plurality of fasting formwork shells 2 are contained in the reinforced concrete 1, and its spacer braces 4 are rods, and the braces 4 can also be cables, plates, tendons, A combination of one or more of wire, thin strip, pier.

The present invention is also characterized in that the rods, plates, and pier-type spacing braces 4 are hollow or porous hollow spacing braces. As shown in Fig. 4, a plurality of hollow formwork 2 is contained in the reinforced concrete 1, and its braces 4 are hollow rods, and can also be hollow or porous hollow plates or pier-type braces.

The present invention is also characterized in that the spacer braces 4 are located at least one of the center, periphery, or four corners of the inner rib cavity 3 . Fig. 5 is a structural schematic diagram of Embodiment 5 of the present invention. A plurality of hollow formwork shells 2 are wrapped in reinforced concrete 1, and its spacer braces 4 are located at the four corners of the inner rib mold cavity 3, and the spacer braces 4 can also be located The central or peripheral position of the inner rib cavity 3.

The present invention is also characterized in that the spacer bracing member 4 is a metal member. Fig. 6 is a schematic structural view of Embodiment 6 of the present invention, a plurality of hollow formwork shells 2 are wrapped in reinforced concrete 1, and the spacer braces 4 are metal parts, shown as steel bars.

The present invention is also characterized in that the metal spacing brace 4 is butted by at least two metal pieces, or the metal piece is welded to the inner rib mold cavity mold wall or the metal piece is welded to the embedded part of the inner rib mold cavity wall or metal The parts are fixed with the embedded parts or the cavity wall with screws or bolts. Fig. 7 is a structural schematic diagram of Embodiment 7 of the present invention, a plurality of hollow formwork shells 2 are wrapped in reinforced concrete 1, and the spacer support members 4 are welded by metal parts and the embedded parts on the wall of the inner rib cavity 3 .

The feature of the present invention also is that described spacer brace 4 is the brace member that the section shape that steel plate makes is U, I, X, T, ○, ㄈ, □ shape or is steel bar, metal tube bracer. Fig. 8 is a structural schematic diagram of Embodiment 8 of the present invention, a plurality of hollow formwork shells 2 are wrapped in reinforced concrete 1, and the spacer braces 4 are braces with a cross-sectional shape of ○ shape made of steel plates, and the braces 4. It can also be a support member made of steel plate with a cross-sectional shape of U, I, X, T, ㄈ, □ shape, or it can also be a steel bar or metal pipe support member.

The present invention is also characterized in that at least one end of the spacer brace 4 is provided with a steel sheet, on which holes, grids, ratchets or ratchet edges are punched, and it is integrated with the mold wall of the hollow formwork 2 . Fig. 9 is a schematic structural view of Embodiment 9 of the present invention. A plurality of hollow formwork shells 2 are wrapped in reinforced concrete 1. There is a steel sheet at one end of the spacer brace 4, and a spine is punched on the steel sheet. The mold wall of the hollow mold shell 2 is embedded and solidified into one.

The present invention is also characterized in that at least one end of the spacer brace 4 has steel wire mesh, steel mesh or fiber mesh, and is integrated with the mold wall of the hollow mold shell 2 . Fig. 10 is a schematic structural view of Embodiment 10 of the present invention. A plurality of fasting formworks 2 are wrapped in reinforced concrete 1. There is a steel wire mesh at one end of the spacer 4, and the steel wire mesh is embedded in the mold wall of the fasting formwork 2. Integrate, the spacer 4 also can have expanded metal or fiber mesh and the mold wall of empty stomach formwork 2 to be embedded and solidly integrated into one at both ends.

The present invention is also characterized in that at least one end of the spacer brace 4 is divided into two or more bent flat strips, and is integrated with the mold wall surface or inside of the hollow mold shell 2 . Fig. 11 is a schematic structural view of Embodiment 11 of the present invention. A plurality of hollow formwork shells 2 are wrapped in reinforced concrete 1, and one end of the spacer support member 4 is divided into two forked and bent flat strips. The inside of the mold wall of 2 is embedded into one body.

The present invention is also characterized in that steel wires, fibers or elongated pieces protrude from at least one end of the spacer brace 4 . Fig. 12 is a schematic structural view of Embodiment 12 of the present invention. A plurality of hollow formwork shells 2 are wrapped in reinforced concrete 1, and steel wires protrude from one end of the spacer 4, and the protruding side of the stretcher 4 is also Can be fibers or elongated sheets.

The present invention is also characterized in that at least one end of the spacer brace 4 is bent and protrudes into the mold wall of the hollow formwork 2 for anchoring. Fig. 13 is a schematic structural view of Embodiment 13 of the present invention, a plurality of fasting formworks 2 are wrapped in reinforced concrete 1, and one end of the spacer brace 4 is bent and extended into the mold wall of the fasting formwork 2 for anchoring.

The present invention is also characterized in that the spacer braces 4 are parallel, orthogonal, oblique, or vertical to each other. As shown in FIG. 13 , a plurality of hollow formwork 2 is wrapped in reinforced concrete 1 , and the spacer braces 4 are parallel to each other.

The present invention is also characterized in that the spacer 4 is a hollow tube, at least one end of the hollow tube is a tube wall with an opening bent into more than two pieces, and the bent tube wall is fixed on the mold wall surface of the hollow formwork 2 Or clamped inside the mold wall. Fig. 14 is a schematic structural view of Embodiment 14 of the present invention. A plurality of hollow formwork shells 2 are wrapped in reinforced concrete 1, and the spacer support members 4 are hollow tubes, and one end of the hollow tubes has an open bend or two pieces of tube walls. , the bent tube wall is fixed inside the die wall of the hollow formwork shell 2.

The present invention is also characterized in that the hollow tube spacer 4 is filled and compacted into a composite tubular spacer. Fig. 15 is a structural schematic diagram of Embodiment 15 of the present invention, a plurality of hollow formworks 2 are wrapped in reinforced concrete 1, and the spacer braces 4 are filled with hollow tubes or composite tubular braces.

The present invention is also characterized in that the hollow in the at least one hollow spacer 4 connects at least two or more hollow formwork cavities. As shown in FIG. 14 , a plurality of hollow formworks 2 are contained in the reinforced concrete 1 , and the cavities in the spacer braces 4 connect the cavities of the two hollow formworks.

The present invention is also characterized in that the spacer 4 is a flat strip, and one end of the flat strip is bent and clamped in the mold wall of the hollow formwork 2 . Fig. 16 is a schematic structural view of Embodiment 16 of the present invention, a plurality of hollow formworks 2 are wrapped in reinforced concrete 1, and the spacer braces 4 are flat strips bent at one end and clamped in the mold wall of the hollow formwork 2.

The present invention is also characterized in that the outer mouth of the inner rib cavity 3 is a bell mouth or a stepped mouth, and the corresponding hidden rib 5 is a trumpet-shaped or stepped hidden rib. Fig. 17 is a schematic structural view of Embodiment 17 of the present invention. A plurality of fasting formworks 2 are wrapped in reinforced concrete 1, and the outer openings of the inner rib cavity 3 on the fasting formworks 2 are bell mouths and step mouths. Trumpet-shaped and step-shaped concealed ribs 5 are correspondingly formed after concrete.

The present invention is also characterized in that at least one of internal corners 7 , chamfers 8 , grooves 9 , pits 10 and holes 11 is provided in the cavity 3 of the inner rib. Fig. 18 is a structural schematic diagram of Embodiment 18 of the present invention. A plurality of fasting formwork shells 2 are wrapped in reinforced concrete 1, and inner rib mold cavities 3 on the fasting stomach formwork shells 2 are provided with inner corners 7, chamfered corners 8, and concave corners. A combination of pits 10 and holes 11. Fig. 19 is a structural schematic diagram of Embodiment 19 of the present invention, a plurality of hollow formworks 2 are contained in reinforced concrete 1, and a combination of chamfers 8 and grooves 9 is provided in the cavity 3 of the inner ribs.

The present invention is also characterized in that at least one of the convex block 12, the convex line 13 and the male angle is arranged in the cavity 3 of the inner rib. Fig. 20 is a schematic structural view of Embodiment 20 of the present invention, a plurality of hollow formworks 2 are wrapped in reinforced concrete 1, and the inner rib cavity 3 is provided with a combination of bumps 12, convex strips 13 and inner corners.

The present invention is also characterized in that the internal corners 7, chamfers 8, grooves 9, protruding lines 13 or combinations thereof in the inner rib cavity 3 are orthogonal, oblique, parallel or vertical. Fig. 21 is a schematic structural view of Embodiment 21 of the present invention. A plurality of hollow formwork shells 2 are wrapped in reinforced concrete 1, and the inner corners 7, chamfers 8, grooves 9 and convex lines 13 in the inner rib mold cavity 3 The combination is arranged in parallel and interchange.

The present invention is also characterized in that the spacer 4 and at least one mold wall of the inner rib cavity 3 are integrally formed into a spacer assembly 14 . FIG. 22 is a schematic structural view of Embodiment 22 of the present invention. A plurality of hollow formwork shells 2 are wrapped in reinforced concrete 1 , and spacer components 4 are integrally formed with the mold walls of inner rib cavity 3 to form spacer components 14 .

The present invention is also characterized in that the spacer component 14 is glued, welded, riveted or plugged together with the hollow formwork 2 . Fig. 23 is a schematic structural view of Embodiment 23 of the present invention, a plurality of hollow formworks 2 are wrapped in reinforced concrete 1, and the spacer components 14 are riveted with the hollow formworks 2 to form a whole. The spacer component 14 and the hollow formwork 2 can also be integrally formed by gluing, welding or plugging.

The present invention is also characterized in that there are at least two inner rib cavities 3, which are parallel or orthogonal to each other. As shown in FIG. 23 , a plurality of hollow formwork shells 2 are contained in the reinforced concrete 1 , and the hollow formwork shells 2 are provided with four mutually orthogonal internal rib mold cavities 3 .

The present invention is also characterized in that the spacer braces 4 protrude or protrude from the cavity 3 of the inner rib. Fig. 24 is a schematic structural view of Embodiment 24 of the present invention, a plurality of hollow formwork shells 2 are wrapped in reinforced concrete 1, and spacer braces 4 protrude from the inner rib cavity 3.

The present invention is also characterized in that at least two or more hollow formworks 2 are provided with reinforcements 15, or that reinforcements 15 are exposed at the same time, or that reinforcements 15 pass through the inner rib cavity 3 and are integrated, and that reinforcements 15 are steel bars and steel wires. , steel mesh, steel wire mesh, expanded metal, fiber, fiber mesh, thin metal strip, braided tape or packing tape. Fig. 25 is a schematic structural view of Embodiment 25 of the present invention, a plurality of fasting formworks 2 are wrapped in reinforced concrete 1, reinforcements 15 are arranged in the walls of the fasting formworks 2, and at the same time, there are reinforcements on the fasting formworks 2 15 is exposed, and its reinforcement 15 is a thin strip, which can also be one or more of steel bar, steel wire, steel mesh, steel wire mesh, steel mesh, fiber, fiber mesh, thin metal strip, braided belt or packing belt combination.

The invention is also characterized in that said reinforcement 15 is a thin strip. As shown in Figure 25, a plurality of hollow formwork 2 is wrapped in reinforced concrete 1, and its reinforcement 15 is a thin metal strip.

The present invention is also characterized in that the hollow formwork 2 is an empty formwork with at least one surface opening or a hole. Fig. 26 is a schematic structural view of Embodiment 26 of the present invention, a plurality of hollow formworks 2 are wrapped in reinforced concrete 1, and the hollow formwork 2 is an open stomach formwork with one surface open.

The present invention is also characterized in that at least one of internal corners 7 , chamfers 8 , grooves 9 , pits 10 and holes 11 is provided on the hollow formwork 2 other than the inner rib cavity 3 . Fig. 27 is a structural schematic diagram of Embodiment 27 of the present invention. A plurality of fasting formwork shells 2 are wrapped in reinforced concrete 1, and the fasting formwork shells 2 other than the inner rib cavity 3 are provided with inner corners 7, chamfered corners 8, and concave corners. A combination of grooves 9, pits 10, and holes 11.

The present invention is also characterized in that at least one of bumps 12 , protruding lines 13 and male corners is provided on the hollow formwork 2 other than the inner rib cavity 3 . Fig. 28 is a schematic structural view of Embodiment 28 of the present invention. A plurality of fasting formwork shells 2 are wrapped in reinforced concrete 1, and the hollow formwork shells 2 other than the inner rib cavity 3 are provided with bumps 12, convex strips 13 and positive combination of angles.

The present invention is also characterized in that the internal corners 7 , chamfers 8 , grooves 9 , ridges 13 , and external corners are orthogonal, oblique, parallel or perpendicular to each other or to each other. As shown in Figure 28, a plurality of hollow formwork shells 2 are wrapped in reinforced concrete 1, and the inner corners 7, chamfers 8, grooves 9, convex lines 13 and male corners on the hollow formwork shells 2 are orthogonal to each other or to each other. , oblique, parallel or interchange settings.

The present invention is also characterized in that the hollow formwork 2 is a polyhedron, a polyhedron with internal angles, a corrugated surface, an arc-angled polyhedron, an occlusal corrugated surface, a curved surface, a polycurved surface or a combination thereof.

The present invention is also characterized in that the hollow formwork 2 is a metal bellows or a plastic bellows.

The present invention is also characterized in that the metal bellows 2 or spacer braces 4 are fixed by welding, riveting, or fastening.

The invention is also characterized by positioning feet 16 on at least one hollow formwork 2 or its appendages. Fig. 29 is a schematic structural view of Embodiment 29 of the present invention, a plurality of hollow formworks 2 are wrapped in reinforced concrete 1, and there are a plurality of positioning feet 16 on the hollow formwork 2.

The present invention is also characterized in that there is an overhanging bottom plate 17 under the hollow formwork 2 . Fig. 30 is a schematic structural view of Embodiment 30 of the present invention, a plurality of hollow formworks 2 are wrapped in reinforced concrete 1, and the lower part of the hollow formwork 2 has an overhanging bottom plate 17.

The present invention is also characterized in that there is a groove 9 at the joint between the hollow formwork 2 and the bottom plate 17 . As shown in FIG. 30 , a plurality of hollow formwork shells 2 are contained in the reinforced concrete 1 , and there are grooves 9 at the joints between the hollow formwork shells 2 and the bottom plate 17 .

The present invention is also characterized in that reinforcements 15 are clamped in the hollow formwork 2 , bottom plate 17 , and spacer braces 4 . As shown in FIG. 30 , among the plurality of reinforced concrete 1 , reinforcements 15 are sandwiched in the hollow formwork 2 and bottom plate 17 .

The present invention is also characterized in that reinforcements 15 are exposed on the wall of the inner rib cavity 3 of the hollow formwork 2 , the bottom plate 17 , and the spacer brace 4 . As shown in FIG. 30 , a plurality of hollow formwork 2 is contained in reinforced concrete 1 , and reinforcements 15 are exposed on the bottom plate 17 thereof.

The present invention is also characterized in that at least one of stiffening plate 18, stiffening rod 19, and reinforcing rib 20 is arranged in the hollow formwork 2, or at least one of stiffening piece 18, stiffening rod 19 or reinforcing rib 20 is provided at the same time. exposed, or at the same time the reinforcement 15 is exposed. Figure 31 is a schematic structural view of Example 31 of the present invention, a plurality of fasting formwork shells 2 are wrapped in reinforced concrete 1, and a combination of stiffening plates 18, stiffening rods 19, and reinforcing ribs 20 are arranged inside the hollow formwork shells 2, and at the same time, Stiffeners 18, stiffeners 19, ribs 20 are partially exposed and combined with cast-in-place concrete, and reinforcements 15 also protrude from the exposed parts of stiffeners 18, stiffeners 19, and ribs 20.

The present invention is also characterized in that at least one mold wall surface of the hollow formwork 2 is a metal corrugated surface. Fig. 32 is a schematic structural view of Example 32 of the present invention, a plurality of hollow formworks 2 are wrapped in reinforced concrete 1, and the wall of the inner rib cavity 3 of the hollow formwork 2 is a metal corrugated wall.

The present invention is also characterized in that the wall of the inner rib cavity 3 of the hollow formwork 2 is a metal corrugated wall or a cement reinforcement product wall or other sealing plates. As shown in Figure 33, a plurality of hollow formwork 2 is wrapped in reinforced concrete 1, and the walls of the inner rib cavity 3 of the hollow formwork 2 are walls of cement reinforcement products or other sealing plates.

The invention is also characterized in that at least two hollow forms 2 are formed simultaneously. As shown in Figure 29, multiple empty formwork shells 2 are wrapped in reinforced concrete 1, and the two hollow formwork shells 2 are formed at the same time

The present invention is also characterized in that the main dense ribs 6 , hidden dense ribs 5 or combinations thereof are provided with threading pipes 21 or water pipes 22 or prestressed steel bars 23 . Fig. 33 is a schematic structural view of Embodiment 33 of the present invention. A plurality of hollow formwork shells 2 are wrapped in reinforced concrete 1. Water pipes 22 and prestressed tendons 23 are arranged in the main dense ribs 6, and threading lines are arranged in the hidden dense ribs 5. Tube 21.

The present invention is also characterized in that the lower bottoms of the hidden dense ribs 5 and the main dense ribs 6 are flush with the lower bottoms of the main frame beams 24 to form beamless concrete hollow slabs. Fig. 34 is a schematic structural view of Embodiment 34 of the present invention. A plurality of hollow formwork shells 2 are wrapped in reinforced concrete 1, and the lower bottom of hidden rib 5, the lower bottom of main dense rib 6 and the main rib 6 are formed after pouring concrete. The lower bottoms of the frame beams 24 are flush to form beamless concrete hollow plates.

During the implementation of the present invention, the components of the fasting formwork 2 are first made, the hollow slab steel bars are laid, then the components of the prefabricated fasting formwork 2 are placed, the concrete is poured, and the concrete hollow slab is formed after curing to the specified age.

Claims (49)

1. A concrete hollow slab, comprising reinforced concrete (1), fasting formwork (2), the fasting formwork (2) is contained in the reinforced concrete (1), characterized in that at least two fasting formworks (2) Arranged alternately, the cast-in-place concrete inner rib mold cavity (3) is formed between the opposite surfaces of the two hollow mold shells (2), and at least one of the inner rib mold cavities (3) connects the hollow mold shells (2) into components Spacer braces (4), cast-in-situ reinforced concrete (1) form cast-in-situ reinforced concrete concealed ribs (5) in the inner rib cavity (3). 2. A concrete hollow slab according to claim 1, characterized in that there are 2, 3 or more components of the hollow formwork (2). 3. A concrete hollow slab according to claim 2, characterized in that the components of the hollow formwork (2) are arranged alternately to form the main dense ribs (6) of cast-in-situ reinforced concrete. The ribs (6) and the secret ribs (5) constitute a structural system in which the main and secret ribs intersect. 4. A concrete hollow slab according to claim 1, 2 or 3, characterized in that the distance between the spacer (4) and the hollow formwork (2) is firmly consolidated, and the spacer (4) Wrapped in the concrete hidden rib (5). 5. A concrete hollow slab according to claim 1, 2 or 3, characterized in that the spacer brace (4) and the hollow formwork (2) are flexibly connected. 6. A concrete hollow slab according to claim 1, 2 or 3, characterized in that the spacer braces (4) are rods, cables, plates, tendons, wires, thin strips, piers at least one of the 7. A concrete hollow slab according to claim 6, characterized in that said rods, plates, and pier-type spacing braces (4) are hollow or porous hollow spacing braces. 8. A concrete hollow slab according to claim 1, 2 or 3, characterized in that the spacer braces (4) are located in at least one of the middle or periphery or four corners of the inner rib cavity (3) Location. 9. A concrete hollow slab according to claim 1, 2 or 3, characterized in that the spacer braces (4) are metal parts. 10. A concrete hollow slab according to claim 9, characterized in that the metal spacer brace (4) is butted by at least two metal parts, or the metal parts are welded to the mold cavity wall of the inner rib or metal It is formed by welding the embedded parts with the inner rib mold cavity wall or fixing the metal parts with the embedded parts or the mold cavity wall with screws or bolts. 11. A concrete hollow slab according to claim 9, characterized in that the spacer braces (4) are made of steel plates with cross-sectional shapes of U, I, X, T, ○, ㄈ, □ The supporting parts are steel bars or metal pipe supporting parts. 12. A concrete hollow slab according to claim 1, 2 or 3, characterized in that at least one end of the spacer brace (4) is provided with a steel sheet, which is punched with holes, grids, spines, etc. Head or spine, and embedded with the mold wall of the hollow formwork (2) as a whole. 13. A concrete hollow slab according to claim 1, 2 or 3, characterized in that at least one end of the spacer brace (4) has steel wire mesh, steel mesh or fiber mesh, and is connected with the hollow formwork (2) The mold wall is embedded and solidified into one. 14. A concrete hollow slab according to claim 1, 2 or 3, characterized in that at least one end of the spacer brace (4) is divided into two or more bent flat strips, and is connected with the hollow formwork ( 2) The surface or interior of the mold wall is embedded into one body. 15. A concrete hollow slab according to claim 1, 2 or 3, characterized in that steel wires, fibers or elongated pieces protrude from at least one end of the spacer brace (4). 16. A concrete hollow slab according to claim 1, 2 or 3, characterized in that at least one end of the spacer brace (4) is bent and extended into the mold wall of the hollow formwork (2) for anchoring . 17. A concrete hollow slab according to claim 1, 2 or 3, characterized in that the spacer braces (4) are parallel, orthogonal, oblique, or interchange with each other. 18. A concrete hollow slab according to claim 1, 2 or 3, characterized in that the spacer (4) is a hollow tube, and at least one end of the hollow tube has an opening and is bent into more than two pieces The pipe wall is fixed on the mold wall surface of the hollow formwork (2) or clamped inside the mold wall by bending the pipe wall. 19. A concrete hollow slab according to claim 18, characterized in that the hollow tube spacer (4) is filled and compacted into a composite tubular spacer. 20. A concrete hollow slab according to claim 7 or 18, characterized in that the cavity in the at least one hollow spacer (4) connects at least two cavities of hollow formwork. 21. A concrete hollow slab according to claim 1, 2 or 3, characterized in that the spacer (4) is a flat strip, and one end of the flat strip is bent and clamped in the hollow formwork (2) inside the mold wall. 22. A concrete hollow slab according to claim 1, 2 or 3, characterized in that the outer opening of the inner rib cavity (3) is a bell mouth or a step mouth, and the correspondingly formed hidden ribs (5 ) is a trumpet-shaped or stepped hidden rib. 23. A concrete hollow slab according to claim 1, 2 or 3, characterized in that the inner rib mold cavity (3) is provided with inner corners (7), chamfers (8), grooves ( 9), at least one of pits (10), and holes (11). 24. A concrete hollow slab according to claim 1, 2 or 3, characterized in that the inner rib mold cavity (3) is provided with bumps (12), convex lines (13), male corners at least one of . 25. A concrete hollow slab according to claim 23 or 24, characterized in that the internal corners (7), chamfers (8), grooves (9), The raised strips (13) or their combination are orthogonal, oblique, parallel or interchanged. 26. A concrete hollow slab according to claim 1, 2 or 3, characterized in that the spacer brace (4) is integrally formed with the mold wall of at least one inner rib cavity (3) to form a spacer assembly ( 14). 27. A concrete hollow slab according to claim 26, characterized in that the spacer component (14) is glued, welded, riveted or plugged together with the hollow formwork (2). 28. A concrete hollow slab according to claim 1, 2 or 3, characterized in that there are at least two inner rib cavity (3), which are parallel or orthogonal to each other. 29. A concrete hollow slab according to claim 1, 2 or 3, characterized in that the spacer braces (4) protrude or protrude from the inner rib cavity (3). 30. A concrete hollow slab according to claim 1, 2 or 3, characterized in that at least two hollow formworks (2) are provided with reinforcements (15), or the reinforcements (15) are exposed at the same time, or the reinforcements (15) are exposed (15) pass through the inner rib mold cavity (3) to be integrated, and the reinforcement (15) is in steel bar, steel wire, steel mesh, steel wire mesh, steel mesh, fiber, fiber mesh, thin metal strip, braided belt or packing belt at least one of . 31. A concrete hollow slab according to claim 30, characterized in that said reinforcement (15) is a thin strip. 32. A concrete hollow slab according to claim 1, 2 or 3, characterized in that the hollow formwork (2) is a hollow formwork with at least one surface opening or hole. 33. A concrete hollow slab according to claim 1, 2 or 3, characterized in that the hollow formwork (2) other than the inner rib cavity (3) is provided with internal corners (7), inverted At least one of corners (8), grooves (9), pits (10), and holes (11). 34. A concrete hollow slab according to claim 1, 2 or 3, characterized in that there are bumps (12), convex At least one of bar (13), male angle. 35. A concrete hollow slab according to claim 33 or 34, characterized in that the inner corners (7), chamfers (8), grooves (9), raised lines (13), and the outer corners themselves Or mutually orthogonal, oblique, parallel or interchange. 36. A concrete hollow slab according to claim 1, 2 or 3, characterized in that the hollow formwork (2) is a polyhedron, internal angle polyhedron, corrugated surface, arc-angle polyhedron, occlusal corrugated surface, curved surface solids, polyhedrons, or combinations thereof. 37. A concrete hollow slab according to claim 1, 2 or 3, characterized in that the hollow formwork (2) is a metal bellows or a plastic bellows. 38. A concrete hollow slab according to claim 37, characterized in that the metal bellows (2) or spacer braces (4) are fixed by welding, riveting, or fastening. 39. A concrete hollow slab according to claim 1, 2 or 3, characterized in that at least one hollow formwork (2) or its attachments have positioning feet (16). 40. A concrete hollow slab according to claim 1, 2 or 3, characterized in that there is an overhanging bottom plate (17) under the hollow formwork (2). 41. A concrete hollow slab according to claim 40, characterized in that there is a groove (9) at the connection between the hollow formwork (2) and the bottom plate (17). 42. A concrete hollow slab according to claim 40, characterized in that reinforcements (15) are sandwiched in the hollow formwork (2), bottom plate (17), and spacer braces (4). 43. A concrete hollow slab according to claim 42, characterized in that the walls of the inner rib cavity (3) of the hollow formwork (2), the bottom plate (17), and the spacer braces (4) There is reinforcement (15) exposed. 44. A concrete hollow slab according to claim 1, 2 or 3, characterized in that stiffening plates (18), stiffening rods (19), reinforcing ribs (20 ), or at least one of the stiffener (18), stiffener (19) or rib (20) is exposed at the same time, or the reinforcement (15) is exposed at the same time. 45. A concrete hollow slab according to claim 1, 2 or 3, characterized in that at least one mold wall surface of the hollow formwork (2) is a metal corrugated surface. 46. A concrete hollow slab according to claim 1, 2 or 3, characterized in that the wall of the inner rib cavity (3) of the hollow formwork (2) is a metal corrugated wall or a cement reinforced product wall or other sealing boards. 47. A concrete hollow slab according to claim 1, 2 or 3, characterized in that at least two hollow forms (2) are formed simultaneously. 48. A concrete hollow slab according to claim 1, 2 or 3, characterized in that the main dense rib (6), hidden dense rib (5) or a combination thereof is provided with a threading pipe (21) or Water pipe (22) or prestressed steel bar (23). 49. A concrete hollow slab according to claim 1, 2 or 3, characterized in that the lower bottom of the hidden dense rib (5), the lower bottom of the main dense rib (6) and the main frame beam (24 ) are flush with each other to form a beamless concrete hollow slab.

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