CN1779139B - A hollow concrete slab - Google Patents

Abstract

A concrete hollow slab, comprising cast-in-place reinforced concrete (21), cavity members (22) for filling, the cavity members (22) for filling are arranged alternately and wrapped in cast-in-place reinforced concrete (21), filled The cavity members (22) are cast-in-situ concrete ribs (23) between each other, and at least two prefabricated cavity formworks (1) are arranged alternately on the structural bottom plate (2), and the alternate cavity formworks (1) and the structural bottom plate (2) form a cast-in-place structural inner rib cavity (3), the cavity formwork (1) is connected with the structural bottom plate (2) as a whole, and there is cast-in-situ reinforced concrete ( 21) Form the cast-in-place concrete inner rib (24) and connect with the cast-in-place concrete rib (23), which is characterized in that the inner rib mold cavity (3) is provided with a brace (4) to connect the cavity mold The shell (1), the cavity formwork (1) is a closed cavity formwork. It is suitable for hollow floors, roofs, foundation slabs, walls and hollow bridges, especially for hollow floors without beams.

Description

A hollow concrete slab

(1) Technical field

The invention relates to a concrete hollow slab.

(2) Background technology

At present, most of the buildings with brick-concrete structure and reinforced concrete structure use prefabricated hollow slabs as floor slabs. This floor slab has the advantages of fast construction speed and low cost. However, because there is no firm connection between two adjacent prefabricated hollow slabs, only cement mortar is used to fill the joints, so the integrity is poor, which is not conducive to earthquake resistance, and cracks and water seepage often occur in the gaps. In order to solve the above problems, many buildings adopt the method of cast-in-place concrete floor slabs (solid and hollow). Although the problems of earthquake resistance and cracking have been solved, a large number of templates are used during construction, which not only increases the cost, but also slows down the construction speed and prolongs the construction period. deadline. Application No. 00203695.9 is a utility model patent for "a combined concrete rib floor slab". It is composed of prefabricated thin plates, formwork shells, hidden ribs, and upper plates. The prefabricated thin plates are placed at intervals, and the formwork is fixed on the prefabricated thin plates. , There are hidden ribs between adjacent prefabricated thin plates or formwork shells, and the upper plate covers the formwork shells and is connected with the hidden ribs as a whole. Although this kind of floor slab can save a lot of formwork and speed up the construction process, because the formwork is separated from the prefabricated thin plate, its strength and rigidity are relatively poor, so there is a problem that the formwork is easy to break. At the same time, the formwork is fixed on the prefabricated sheet. There is no specific fixing method involved on the thin plate, so it is difficult to fix on site. The patent No. 93206310.1 is a utility model patent for formwork components. It consists of a side wall and a formwork upper plate to form a cavity formwork and then connects with the lower base plate to form a fully enclosed cavity polyhedron structure. There are prefabricated reinforcing ribs in it. The components are placed on the supports between the floors, and the cast-in-place main ribs and formwork components are bonded to each other to form a whole. When this kind of component is used, it is purely a prefabricated filling component, and the reinforcing ribs in the formwork are only used to support the formwork, and cannot participate in the overall stress of the floor. And when it is applied to a large space structure floor, its mechanical performance will be correspondingly worse, and there is no secondary rib connection between the cast-in-place main ribs, so the size of the main ribs needs to be increased accordingly, or the number of main ribs increases , resulting in an increase in material consumption and cost. For this reason, the applicant applied for a publication number of CN1349028A on November 15, 2001, and the name is called "A Composite Rib Cavity Member for a Space Structure Floor". The cavity member disclosed by it includes formwork and structure The bottom plate, the cavity formwork and the structural bottom plate are connected as a whole. It is characterized in that there are at least two cavity formworks arranged alternately on the structural bottom plate, and its side and the structural bottom plate form at least one cast-in-place structural secondary rib cavity. The cavity formwork The other outer side of the cast-in-place structure constitutes the main rib or beam or side formwork of the wall. In this way, on the basis of the existing technology, there are at least 2 cavity formworks and at least 1 cast-in-place structural secondary rib cavity (inner rib cavity) on the structural base plate, and a cast-in-place structure can be formed on the structural base plate The secondary ribs jointly participate in the stress of the structural bottom, main ribs, and upper slabs, forming a two-way main rib and secondary rib stress structure, which not only solves the problems existing in the prior art, but also further improves the overall performance of the floor, earthquake resistance performance, the thickness of the floor is reduced, the structure's self-weight is reduced, and the cost is reduced. However, during the handling and construction of the cavity components in this concrete hollow slab, the structural bottom plate is prone to breakage, the damage rate is large, the handling and construction are inconvenient, and the construction cost is increased. At the same time, its production is more troublesome and costly. 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, low cost and good mechanical properties.

The solution of the present invention is on the basis of the prior art, including cast-in-place reinforced concrete, cavity members for filling, the cavity members for filling are arranged alternately and wrapped in cast-in-place reinforced concrete, and the cavity members for filling There are cast-in-place concrete ribs between each other, and the filling cavity components include a plurality of prefabricated cavity formworks and a structural bottom plate. At least two prefabricated cavity formworks are arranged alternately on the structural bottom plate, and the alternate cavity formworks and The structural bottom plate constitutes the structural inner rib mold cavity for cast-in-place, the cavity formwork is connected with the structural bottom plate as a whole, and there is cast-in-place reinforced concrete in the inner rib mold cavity to form the cast-in-place concrete inner rib, which is connected with the cast-in-place concrete rib. The inner rib mold cavity is provided with a stretching member to pull and connect the cavity mold shell, and the cavity mold shell is a closed cavity mold shell. In this way, since the inner rib mold cavity is provided with braces to connect the cavity formwork, and the cavity formwork is a closed cavity formwork, the strength and rigidity of the cavity components in the concrete hollow slab are greater, and the impact resistance is greater. The performance is better, the structural bottom plate is less likely to be broken, and the handling and construction are more convenient; therefore, this concrete hollow slab has the characteristics of convenient construction, low cost, and good mechanical properties, thereby achieving the purpose of the present invention and being suitable for cast-in-place steel bars Concrete or prestressed reinforced concrete hollow floors, roofs, foundation slabs, walls and hollow bridges, especially suitable for hollow beamless floors.

The present invention is also characterized in that there is at least one groove on the cavity formwork, at least two grooves on the adjacent cavity formwork are on the same straight line, and the grooves on the same straight line are superimposed with post-cast concrete strips. , the concrete strips are connected with the braces in the cavity of the interphase inner ribs. In this way, the connection reliability between the cavity formwork and the structural bottom plate can be greatly improved, making it difficult to separate during stacking, transportation, installation and construction, which can greatly reduce the loss rate of cavity components and reduce costs.

The present invention is also characterized in that there is at least one vertical steel bar or steel strand in the concrete strip of the groove passing through the stacked concrete strip and the brace. In this way, the brace and the concrete bar are connected as a whole, which can greatly improve the support and tensile capacity of the brace.

The present invention is also characterized in that there is at least one vertical groove on the cavity formwork, and a vertical concrete strip tie structure bottom plate is superimposed therein. In this way, the connection reliability between the cavity formwork and the structural bottom plate can be greatly improved, making it difficult to separate during stacking, transportation, installation and construction, which can greatly reduce the loss rate of cavity components and reduce costs.

The present invention is also characterized in that there are longitudinal steel bars or steel strands in the structural bottom plate. In this way, there are longitudinal steel bars or steel strands in the structural bottom plate, which can greatly increase the strength and rigidity of the structural bottom plate, improve its stress structure, and make its stress structure more excellent and reasonable.

The present invention is also characterized in that there is at least one vertical steel bar on the cavity formwork to tie the steel bars in the bottom plate of the structure. In this way, when there are vertical steel bars on the cavity formwork to tie the steel bars in the structural bottom plate, the reliability of the connection between the cavity formwork and the structural bottom can be improved, so that it can be used during stacking, transportation, installation and construction. It is not easy to separate, which can greatly reduce the loss rate of cavity components and reduce costs. At the same time, it can greatly increase the strength and rigidity of the cavity formwork, improve its stress structure, and make its stress structure more excellent and reasonable.

The present invention is also characterized in that there is at least one vertical steel bar on the cavity formwork to simultaneously tie the steel bar in the bottom plate of the structure and the longitudinal steel bar in the groove. In this way, when there are vertical steel bars on the cavity formwork and simultaneously tie the reinforcement bars in the structural bottom plate and the longitudinal bars in the groove, the reliability of the connection between the cavity formwork and the bottom of the structure is improved, making it possible to It is not easy to separate during stacking, transportation, installation and construction, which can greatly reduce the loss rate of cavity components and reduce costs. At the same time, it can greatly improve the strength and stiffness of the cavity formwork, improve its stress structure, and make its stress structure better and more reasonable.

The present invention is also characterized in that reinforcements protrude from the cavity formwork and are anchored in the structural bottom plate. In this way, the quality and integrity of the cavity member for hollow slabs can be greatly improved by connecting the reinforcement so that it will not crack and fail during application.

The present invention is also characterized in that the mold cavities of the at least three inner ribs are parallel. In this way, when the cavity member for the hollow slab is applied to the cast-in-place concrete hollow slab, a large amount of unstressed concrete in the cast-in-place concrete slab can be evacuated to form a hollow structural slab, which greatly reduces the weight of the floor slab and reduces the weight of the floor slab. The constant load of the internal load-bearing structure makes the floor structure more portable and has a stronger bearing capacity; at the same time, cast-in-place concrete transverse ribs can be formed in the inner rib cavity, which can greatly reduce the difference in longitudinal and transverse stiffness of the hollow slab.

The present invention is also characterized in that concrete ribs are superimposed on the side of the cavity formwork, and the concrete ribs are integrated with the structural bottom plate. In this way, the side walls of the cavity formwork are superimposed with longitudinal ribs, and the longitudinal ribs are integrated with the bottom plate, which can greatly improve the overall performance of the cavity member for hollow slabs.

The present invention is also characterized in that there are reinforcing ribs on the cavity formwork. In this way, the strength, stiffness and impact resistance of the cavity formwork wall can be greatly improved, making it less likely to be damaged during stacking, transportation, installation and construction applications, which can greatly reduce the loss rate of cavity components and save costs .

The present invention is also characterized in that there are supporting rods in the cavity formwork. In this way, there are supporting rods in the cavity formwork, which can greatly enhance the bearing capacity of the cavity components, reduce the loss rate of the cavity components during transportation, installation, and construction, save materials, and reduce the cost of hollow slabs.

The present invention is also characterized in that there are stiffening ribs in the cavity formwork. In this way, there are stiffening ribs in the cavity formwork, which can greatly enhance the bearing capacity of the cavity components, reduce the loss rate of the cavity components during transportation, installation, and construction, save materials, and reduce the cost of the hollow slab.

The present invention is also characterized in that there are steel bars or steel mesh reinforcements in the reinforcing ribs or/and supporting rods or/and stiffening plates. In this way, reinforcing bars, supporting rods and stiffening plates are provided with reinforcing bars or steel mesh reinforcements, which can greatly improve the stiffness and strength of reinforcing ribs, supporting rods, and stiffening plates, making them suitable for stacking, transportation, installation, construction and application. It is not easy to break under working conditions and can fully meet the load requirements.

The present invention is also characterized in that at least one of bumps, reinforcing bar pads or pits is provided on the cavity formwork. In this way, the bumps and steel bar pads can accurately position the steel bars to ensure the pouring quality of the hollow slab, and the cast-in-place concrete can be poured into the pit to form a corresponding cast-in-place concrete load-bearing structural member, which can effectively improve the structural performance of the hollow slab .

The present invention is also characterized in that at least one of internal corners, chamfers or arc corners is provided on the cavity formwork. In this way, when the component is applied to the cast-in-place concrete hollow floor, the cast-in-place concrete is poured into the inner corner, chamfer or arc corner, and a local cast-in-place concrete reinforcement structure can be formed accordingly.

The present invention is also characterized in that said structural floor has at least one of stiffeners, support bars or stiffeners. In this way, the bearing capacity of the hollow member can be greatly enhanced, the loss rate of the hollow member during transportation, installation and construction can be reduced, materials can be saved, and the cost of the hollow plate can be reduced.

The present invention is also characterized in that the structural bottom plate protrudes out of the cavity formwork to form a flange. In this way, when the cavity member is applied to the cast-in-place concrete hollow slab, the protruding protruding edge can replace the construction formwork, reduce the loss of the formwork, reduce the cost of materials, and at the same time save the formwork installation process, speed up the construction speed, and improve the construction efficiency .

The present invention is also characterized in that the structural bottom plate is concrete or reinforced concrete or wire mesh concrete bottom plate. In this way, the strength, stiffness and flexural capacity of the structural bottom plate have been greatly improved. When the cavity member should be placed in the cast-in-place concrete hollow slab, the bottom plate can participate in the structural force transmission and jointly bear the load, making the hollow The structure of the board is more excellent.

The present invention is also characterized in that the cavity formwork is a cavity formwork made of cement mortar and fiber mesh cloth or steel wire mesh. In this way, the strength, stiffness and bending resistance of the cavity formwork are greatly improved.

The present invention is also characterized in that a transport hanger is provided on the cavity member. The handling hanger can be a handle, hook, ring or other devices. In this way, the components can be stacked, transferred, hoisted and constructed very conveniently, which reduces the work difficulty and work intensity of the above-mentioned processes, is conducive to improving the construction efficiency and reducing the construction cost.

The present invention is also characterized in that the mold cavities of at least two inner ribs are spaced apart and connected in a straight line. In this way, after cast-in-place concrete is formed, cast-in-place concrete concealed ribs arranged in a straight line are formed in the above-mentioned inner rib cavity, which effectively improves the load-bearing structure of cast-in-place concrete inside the hollow slab so that it can fully meet the use requirements.

The present invention is also characterized in that the at least two inner rib mold cavities on the same straight line are parallel. In this way, after pouring concrete, a corresponding parallel cast-in-place concrete hidden rib load-bearing structure is formed in the hollow slab, which greatly improves the load-bearing structure inside the hollow slab and enables it to bear a greater load than the same solid slab.

The present invention is also characterized in that at least one end of the at least two filling cavity members are flush with each other. In this way, the ends of the cavity components for filling are arranged flush, which greatly facilitates the pouring of the hollow slab and greatly reduces the loss of the formwork.

The present invention is also characterized in that the cavity members for filling with flush ends are arranged at intervals or close to each other. In this way, according to the different stress conditions of the hollow slab, a reasonable arrangement can be used to install the cavity components for filling, which reduces the construction difficulty and speeds up the construction.

The present invention is also characterized in that the cast-in-place concrete ribs are orthogonal or oblique to the cast-in-place concrete inner ribs. In this way, when the cast-in-place concrete ribs in the hollow slab and the cast-in-place concrete inner ribs are arranged orthogonally or obliquely, a criss-crossed cast-in-place concrete load-bearing structure is formed in the hollow slab, and the hollow slab forms a two-way force-bearing hollow. plate.

The present invention is also characterized in that there are cast-in-place reinforced concrete laminated structural panels on the cast-in-place concrete ribs, cast-in-place concrete inner ribs and cavity members for filling. In this way, when there are cast-in-place reinforced concrete laminated structural panels on the cast-in-place concrete ribs, cast-in-situ concrete inner ribs, and the cavity members for filling, the cast-in-situ concrete ribs, cast-in-place concrete inner ribs and cast-in-place reinforced concrete laminated structural panels Combined to form a T-shaped or I-shaped cast-in-place concrete load-bearing structure, the load capacity of the hollow slab can be greatly improved.

The present invention is also characterized in that the top surface of the cast-in-place concrete rib and the cast-in-place concrete inner rib is flush with the upper surface of the filling cavity member, and there is no cast-in-place reinforced concrete laminated structural panel on the filling cavity member, forming a laminated structure. Rib hollow plate. In this way, the self-weight of the hollow slab can be greatly reduced, the amount of concrete used can be reduced, materials can be saved, costs can be reduced, and the bearing capacity of the hollow slab can be correspondingly improved.

The present invention is also characterized in that the top plate of the filling cavity member is a concrete board or a reinforced concrete board. In this way, when the top plate of the filling cavity member is a concrete slab or a reinforced concrete slab, during the pouring process of the hollow slab, the top plate of the filling cavity member can fully meet the requirements of construction load and use requirements, and the top plate is not easily damaged.

The present invention is also characterized in that the filling cavity components are staggered butt jointed. In this way, the pouring of the hollow slabs is greatly facilitated when the cavity members for filling are butt-jointed, the concentrated stress at the butt-joint parts can be effectively dispersed, the joints are not easily cracked and damaged, and the quality of the hollow slabs can be effectively guaranteed.

The present invention is also characterized in that the cavity members for filling are butt-jointed through seams. In this way, when the cavity members for filling are butt-jointed, during the construction process, the construction and layout of the cavity members for filling can be greatly facilitated, construction difficulty and construction cost can be reduced.

The present invention is also characterized in that at least one end of the filling cavity member is supported on the cast-in-place concrete wall or/and the exposed and hidden beams. In this way, the support reliability of the filling cavity member in the hollow slab can be effectively ensured, and construction is facilitated.

The present invention is also characterized in that both ends of the filling cavity member are supported on cast-in-place concrete walls or/and exposed and concealed beams or concrete ring beams. In this way, the support reliability of the filling cavity member in the hollow slab can be effectively ensured, and construction is facilitated.

The present invention is also characterized in that the bottom surface of the filling cavity member is flush with the bottom surface of the beam. In this way, when the bottom surface of the hollow member for filling is flush with the bottom surface of the beam, the bottom surface of the hollow slab is on the same level, so that the bottom surface of the hollow slab becomes a hollow slab with no exposed beams, which can greatly improve the use function of the hollow slab.

The present invention is also characterized in that the cast-in-place concrete ribs or/and the cast-in-place concrete inner ribs intersect with walls or beams and are connected as a whole. In this way, when the cast-in-place concrete ribs or cast-in-place concrete inner ribs intersect with the wall or beam and are connected as a whole, the cast-in-place concrete ribs or cast-in-place concrete inner ribs can transfer the stress generated by the load on the plate to the wall or beam, so that Stress is transmitted.

The present invention is also characterized in that the cast-in-place concrete ribs and/or the cast-in-place concrete inner ribs contain prestressed steel bars or prestressed steel strands or unbonded prestressed steel bars. In this way, when there are prestressed steel bars or prestressed steel strands or unbonded prestressed steel bars in the cast-in-place concrete ribs or cast-in-place concrete inner ribs, the hollow slab becomes a prestressed hollow slab, which can greatly improve the strength of the hollow slab. Carrying capacity.

(4) Description of drawings

Fig. 1 is a schematic structural diagram of Embodiment 1 of the present invention.

Fig. 2 is a schematic structural diagram of Embodiment 2 of the present invention.

Fig. 3 is a schematic structural diagram of Embodiment 3 of the present invention.

Fig. 4 is one of the structural schematic diagrams of the filling cavity member in the embodiment of the present invention.

Fig. 5 is the second structural schematic diagram of the filling cavity member in the embodiment of the present invention.

Fig. 6 is the third schematic structural view of the filling cavity member in the embodiment of the present invention.

Fig. 7 is the fourth schematic structural view of the filling cavity member in the embodiment of the present invention.

Fig. 8 is the fifth schematic structural view of the filling cavity member in the embodiment of the present invention.

Fig. 9 is the sixth structural schematic diagram of the filling cavity member in the embodiment of the present invention.

Fig. 10 is the seventh schematic structural view of the filling cavity member in the embodiment of the present invention.

Fig. 11 is the eighth structural schematic diagram of the filling cavity member in the embodiment of the present invention.

Fig. 12 is the ninth structural schematic diagram of the filling cavity member in the embodiment of the present invention.

(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 cast-in-place reinforced concrete 21 and cavity members 22 for filling. The cavity members 22 for filling are arranged alternately and wrapped in the cast-in-place reinforced concrete 21. There are cast-in-place concrete ribs 23 between them, and the cavity member 22 for filling includes a plurality of prefabricated cavity formworks 1 and a structural bottom plate 2, and at least two prefabricated cavity formworks 1 are arranged alternately on the structural bottom plate 2, and the The cavity formwork 1 and the structural bottom plate 2 form a structural internal rib cavity 3 for cast-in-place, the cavity formwork 1 and the structural bottom plate 2 are connected as a whole, and the internal rib cavity 3 has cast-in-place reinforced concrete 21 to form a cast-in-place concrete interior The rib 24 is connected with the cast-in-place concrete rib 23, and it is characterized in that the inner rib cavity 3 is provided with a stretcher 4 to pull and connect the cavity formwork 1, and the cavity formwork 1 is a closed cavity formwork . In the attached drawings, 1 is the cavity formwork, 2 is the structural bottom plate, 3 is the inner rib cavity, 4 is the supporting part, 21 is the cast-in-place reinforced concrete, 22 is the cavity member for filling, and 23 is the cast-in-place concrete Ribs, 24 are cast-in-place concrete inner ribs. In the following drawings, those with the same numbers have the same descriptions. As shown in Figure 1, the concrete hollow slab includes cast-in-place reinforced concrete 21, cavity members 22 for filling, the cavity members 22 for filling are arranged alternately, and are wrapped in the cast-in-place reinforced concrete 21, and the cavity members 22 for filling There are cast-in-place concrete ribs 23 between them, and the cavity member 22 for filling includes a prefabricated cavity formwork 1 and a structural bottom plate 2. There are five prefabricated cavity formworks 1 arranged alternately on the structural bottom plate 2, and the alternate cavities The formwork 1 and the structural bottom plate 2 form a structural internal rib cavity 3 for cast-in-place, the cavity formwork 1 and the structural bottom plate 2 are connected as a whole, and the internal rib cavity 3 has cast-in-place reinforced concrete 21 to form a cast-in-place concrete internal rib 24 , and is connected with the cast-in-place concrete rib 23, and the inner rib cavity 3 is provided with a brace 4 to pull and connect the cavity formwork 1, and the cavity formwork 1 is a closed cavity formwork. As shown in FIG. 4 , it is a schematic structural view of the filling cavity member 22 .

The present invention is also characterized in that there is at least one groove 5 on the cavity formwork 1, at least two grooves 5 of the adjacent cavity formwork 1 are on the same straight line, and the grooves 5 on the same straight line are overlapped. There are post-pouring concrete strips 6, and the concrete strips 6 are connected with the braces 4 in the cavity 3 of the interphase inner ribs. As shown in Figure 5, there are grooves 5 on the cavity formwork 1, the grooves 5 of the adjacent cavity formwork 1 are on the same straight line, and the grooves 5 on the same straight line are superimposed with post-casting Concrete strips 6 are connected to the braces 4 in the cavity 3 of the interphase inner ribs.

The present invention is also characterized in that there is at least one vertical steel bar or steel strand 7 inside the concrete strip 6 of the groove 5 passing through the stacked concrete strip 6 and the brace 4 . As shown in FIG. 6 , there is a longitudinal steel bar 7 inside the concrete bar 6 of the groove 5 passing through the stacked concrete bar 6 and the brace 4 .

The present invention is also characterized in that there is at least one vertical groove 5 on the cavity formwork 1, in which vertical concrete strips 6 are stacked to tie the structural bottom plate 2. As shown in FIG. 7 , there are vertical grooves 5 on the cavity formwork 1 , and vertical concrete strips 6 are superimposed therein to tie the structural bottom plate 2 .

The present invention is also characterized in that there are longitudinal steel bars or strands 7 inside the structural bottom plate 2 . As shown in FIG. 7 , there are longitudinal steel bars 7 inside the structural bottom plate 2 .

The present invention is also characterized in that there is at least one vertical steel bar 7 on the cavity formwork 1 to tie the steel bar 7 in the bottom plate 2 of the structure. As shown in FIG. 8 , there are vertical steel bars 7 on the cavity formwork 1 to tie the steel bars 7 in the bottom plate 2 of the structure.

The present invention is also characterized in that there is at least one vertical steel bar 7 on the cavity formwork 1 and at the same time, the steel bar 7 in the structural bottom plate 2 and the vertical bar 7 in the groove 5 are tied together. As shown in FIG. 8 , there are vertical steel bars 7 on the cavity formwork 1 , and the steel bars 7 in the structural bottom plate 2 and the vertical bars 7 in the groove 5 are simultaneously tied.

The present invention is also characterized in that reinforcements 8 protrude from the cavity formwork 1 and are anchored in the structural bottom plate 2 . As shown in FIG. 8 , reinforcements 8 protrude from the cavity formwork 1 and are anchored in the structural bottom plate 2 .

The present invention is also characterized in that the at least three inner rib mold cavities 3 are parallel. As shown in Figure 8, the inner rib cavity 3 is parallel.

The present invention is also characterized in that concrete ribs 9 are superimposed on the side of the cavity formwork 1, and the concrete ribs 9 are connected with the structural bottom plate 2 as a whole. As shown in FIG. 12 , concrete ribs 9 are superimposed on the side of the cavity formwork 1 , and the concrete ribs 9 are connected with the structural bottom plate 2 as a whole.

The present invention is also characterized in that there are reinforcing ribs 10 on the cavity formwork 1 . As shown in FIG. 10 , there are reinforcing ribs 10 on the cavity formwork 1 .

The present invention is also characterized in that there are supporting rods 11 inside the cavity formwork 1 . As shown in FIG. 10 , there are supporting rods 11 inside the cavity formwork 1 .

The present invention is also characterized in that there are stiffening ribs 12 inside the cavity formwork 1 . As shown in FIG. 10 , there are stiffening ribs 12 inside the cavity formwork 1 .

The present invention is also characterized in that the reinforcing ribs 10 or/and the supporting rods 11 or/and the stiffening plates 12 have steel bars 7 or steel mesh reinforcements 8 . As shown in FIG. 10 , steel bars 7 and steel mesh reinforcements 8 are respectively arranged in the supporting rods 11 and stiffening plates 12 .

The present invention is also characterized in that the cavity formwork 1 is provided with at least one of a bump 13 , a reinforcement strip 14 or a pit 15 . As shown in FIG. 11 , the cavity formwork 1 is respectively provided with bumps 13 , reinforcement strips 14 and pits 15 .

The present invention is also characterized in that the cavity formwork 1 is provided with at least one of internal corners 16 , chamfers 17 or arc corners 18 . As shown in FIG. 12 , the cavity formwork 1 is provided with internal corners 16 , chamfers 17 and arc corners 18 respectively.

The present invention is also characterized in that the structural bottom plate 2 is provided with at least one of reinforcing ribs 10 , supporting rods 11 or stiffening plates 12 . As shown in FIG. 10 , there are supporting rods 11 and stiffening plates 12 on the structural base 2 .

The present invention is also characterized in that the structural bottom plate 2 protrudes out of the cavity formwork 1 to form a flange 19 . As shown in FIG. 12 , the structural bottom plate 2 protrudes out of the cavity formwork 1 to form a raised edge 19 .

The present invention is also characterized in that the structural bottom plate 2 is a concrete or reinforced concrete or wire mesh concrete bottom plate. As shown in Figure 12, the structural base 2 is a concrete base.

The present invention is also characterized in that the cavity formwork 1 is a cavity formwork made of cement mortar and fiber mesh cloth or steel wire mesh. As shown in FIG. 12 , the cavity formwork 1 is a cavity formwork made of cement mortar.

The present invention is also characterized in that a transport hanger 20 is provided on the cavity member. As shown in FIG. 12 , a transport hanger 20 is provided on the cavity member.

The present invention is also characterized in that the mold cavities of at least two inner ribs are spaced apart and connected in a straight line. As shown in Fig. 1, the intervals between the inner rib cavities are connected in a straight line.

The present invention is also characterized in that the at least two inner rib mold cavities on the same straight line are parallel. As shown in Figure 1, the internal rib cavities on the same straight line are parallel.

The present invention is also characterized in that at least one end of said at least two filling cavity members are flush. As shown in FIG. 1 , the ends of the cavity member for filling are flush.

The present invention is also characterized in that the filling cavity members with flush ends are arranged at intervals or close to each other. As shown in FIG. 1 , the filling cavity members with flush ends are arranged close to each other.

The present invention is also characterized in that the cast-in-place concrete ribs 23 and the cast-in-place concrete inner ribs 24 are orthogonal or oblique. As shown in FIG. 1 , the cast-in-place concrete ribs 23 and the cast-in-place concrete inner ribs 24 are orthogonal.

The present invention is also characterized in that there are cast-in-place reinforced concrete laminated structural panels 25 on the cast-in-place concrete ribs 23, cast-in-place concrete inner ribs 24 and cavity members. As shown in FIG. 1 , the cast-in-place reinforced concrete laminated structural panels 25 are arranged on the cast-in-place concrete ribs 23 and the cast-in-place concrete inner ribs 24 and the cavity components.

The present invention is also characterized in that the top surfaces of the cast-in-place concrete ribs 23 and cast-in-place concrete inner ribs 24 are flush with the upper surface of the cavity member, and there is no cast-in-place reinforced concrete laminated structural panel 25 on the cavity member to form a laminated rib Hollow board. As shown in Figure 2, the top surfaces of the cast-in-place concrete ribs 23 and the cast-in-place concrete inner ribs 24 are flush with the upper surface of the cavity member, and there is no cast-in-place reinforced concrete laminated structural panel 25 on the cavity member to form a laminated structure. Rib hollow plate.

The present invention is also characterized in that the top plate of the cavity member is a concrete board or a reinforced concrete board. As shown in Figure 2, the top plate of the cavity member is a concrete board or a reinforced concrete board.

The present invention is also characterized in that the cavity components are staggered butt jointed. As shown in FIG. 3 , the cavity components are staggered butt jointed.

The present invention is also characterized in that the cavity components are butted through the seam. As shown in FIG. 1 , the cavity components are butted through the seam.

The present invention is also characterized in that at least one end of the cavity member is supported on the cast-in-place concrete wall or/and the exposed and concealed beams. As shown in Figure 1, the end of the cavity component is supported on the cast-in-situ concrete beam.

The present invention is also characterized in that both ends of the cavity member are supported on cast-in-place concrete walls or/and exposed and concealed beams or concrete ring beams. As shown in Figure 1, the two ends of the cavity member are supported on the cast-in-situ concrete beams and hidden beams.

The present invention is also characterized in that the bottom surface of the cavity member is flush with the bottom surface of the beam. As shown in Figure 3, the bottom surface of the cavity member is flush with the bottom surface of the beam.

The present invention is also characterized in that the cast-in-place concrete ribs 23 and/or the cast-in-place concrete inner ribs 24 intersect with walls or beams and are connected as a whole. As shown in FIG. 1 , the cast-in-place concrete ribs 23 and the cast-in-place concrete inner ribs 24 respectively intersect with the beams and are connected as a whole.

The present invention is also characterized in that the cast-in-place concrete ribs 23 and/or the cast-in-place concrete inner ribs 24 contain prestressed steel bars or prestressed steel strands or unbonded prestressed steel bars. As shown in FIG. 1 , there are prestressed steel bars in the cast-in-situ concrete inner ribs 24 . As shown in FIG. 3 , there are prestressed steel bars in the cast-in-place concrete ribs 23 .

During the implementation of the present invention, first install the bracket or formwork according to the construction requirements, lay the cavity member 22 for filling, then lay the steel bars or the steel bars of the hidden beams or open beams, and various pipeline embedded parts, pour the concrete after the acceptance, and wait for the concrete After setting and hardening, it is cured to the specified age, and the formwork is removed to obtain the concrete hollow slab.

Claims (36)

1. concrete hollow board, comprise cast-in-situ reinforced concrete (21), cavity structural member for filling (22), cavity structural member for filling (22) each other alternately, and wrap up in and be contained in the cast-in-situ reinforced concrete (21), cavity structural member for filling (22) is Cast-in-place concrete rib (23) each other, cavity structural member for filling (22) comprises a plurality of prefabricated hollow mould shells (1), structure base plate (2), at least two prefabricated hollow mould shells (1) are arranged alternately on the structure base plate (2), alternate hollow mould shell (1) constitutes cast-in-place with structure internal-rib die cavity (3) with structure base plate (2), hollow mould shell (1) connects into integral body with structure base plate (2), there is cast-in-situ reinforced concrete (21) to form Cast-in-place concrete internal-rib (24) in the internal-rib die cavity (3), and link to each other with Cast-in-place concrete rib (23), it is characterized in that being provided with in the described internal-rib die cavity (3) support draw piece (4) and socket hollow mould shell (1), hollow mould shell (1) is the sealed hollow formwork, at least one groove (5) is arranged on the described hollow mould shell (1), at least two grooves (5) of adjacent hollow mould shell (1) are on same straight line, groove on the same straight line (5) is superimposed with rear pouring concrete bar (6), concrete bar (6) links to each other with support draw piece (4) in the alternate internal-rib die cavity (3), and at least one vertical the reinforcing bar reinforcing bar in the drawknot structure base plate (2) and the taeniae reinforcing bar in the groove (5) are simultaneously arranged on the described hollow mould shell (1).

2. concrete hollow board according to claim 1 is characterized in that having in the concrete bar (6) of described groove (5) at least one taeniae reinforcing bar or steel strand (7) to pass superimposed concrete bar (6) and support draw piece (4).

3. concrete hollow board according to claim 2 is characterized in that having on the described hollow mould shell (1) at least one vertical groove (5), is superimposed with vertical concrete bar (6) drawknot structure base plate (2) in it.

4. concrete hollow board according to claim 3 is characterized in that having in the described structure base plate (2) reinforcing bar or steel strand (7) longitudinally.

5. concrete hollow board according to claim 1 is characterized in that being extended with on the described hollow mould shell (1) reinforce (8) and is anchored in the structure base plate (2).

6. concrete hollow board according to claim 1 is characterized in that at least three internal-rib die cavitys (3) are parallel.

7. concrete hollow board according to claim 1 is characterized in that the side of described hollow mould shell (1) is superimposed with concrete rib (9), and it is one that concrete rib (9) links with structure base plate (2).

8. concrete hollow board according to claim 1 is characterized in that reinforcing rib (10) is arranged on the described hollow mould shell (1).

9. concrete hollow board according to claim 1 is characterized in that supporting rod (11) is arranged in the described hollow mould shell (1).

10. concrete hollow board according to claim 1 is characterized in that the floor (12) of putting more energy in the described hollow mould shell (1).

11. concrete hollow board according to claim 8 is characterized in that described reinforcing rib (10) is a reinforcing bar (7).

12. concrete hollow board according to claim 9 is characterized in that reinforcing bar (7) is arranged in the described supporting rod (11).

13. concrete hollow board according to claim 10 is characterized in that steel mesh reinforcement reinforce (8) is arranged in the described floor of putting more energy into (12).

14. concrete hollow board according to claim 1 is characterized in that described hollow mould shell (1) is provided with at least one in projection (13), reinforcing bar filler strip (14) or the pit (15).

15. concrete hollow board according to claim 1 is characterized in that described hollow mould shell (1) is provided with at least one in inner corner trim (16), chamfering (17) or the arc angle (18).

16. concrete hollow board according to claim 1 is characterized in that having on the described structure base plate (2) at least one in reinforcing rib (10), supporting rod (11) or the stiffener (12).

17. concrete hollow board according to claim 1 is characterized in that described structure base plate (2) stretches out the toss (19) of the outer formation of hollow mould shell (1).

18. concrete hollow board according to claim 1 is characterized in that described structure base plate (2) is the concrete base plate.

19. concrete hollow board according to claim 1 is characterized in that described structure base plate (2) is the steel bar concrete base plate.

20. concrete hollow board according to claim 1 is characterized in that described structure base plate (2) is a gauze wire cloth concrete base plate.

21. concrete hollow board according to claim 1 is characterized in that the hollow mould shell that described hollow mould shell (1) is made for cement mortar and fibrous mesh cloth or gauze wire cloth.

22. concrete hollow board according to claim 1 is characterized in that described Cavity structural member is provided with carrying suspender member (20).

23. concrete hollow board according to claim 1 is characterized in that at least one end of at least two cavity structural member for filling flushes.

24. concrete hollow board according to claim 23 is characterized in that cavity structural member for filling that the termination flushes is at interval or near setting.

25. concrete hollow board according to claim 1 is characterized in that described Cast-in-place concrete rib (23) and Cast-in-place concrete internal-rib (24) quadrature or oblique.

26. concrete hollow board according to claim 1 is characterized in that on described Cast-in-place concrete rib (23) and Cast-in-place concrete internal-rib (24) and the Cavity structural member cast-in-situ reinforced concrete iterative structure panel (25) being arranged.

27. concrete hollow board according to claim 1, it is characterized in that described Cast-in-place concrete rib (23) and Cast-in-place concrete internal-rib (24) end face and Cavity structural member upper surface flush, no cast-in-situ reinforced concrete iterative structure panel (25) above the Cavity structural member constitutes folded rib hollowcore slab.

28. concrete hollow board according to claim 26, the top board that it is characterized in that described Cavity structural member is the concrete plate.

29. concrete hollow board according to claim 26, the top board that it is characterized in that described Cavity structural member is a reinforced concrete slab.

30. concrete hollow board according to claim 1 is characterized in that described Cavity structural member fissure of displacement butt joint.

31. concrete hollow board according to claim 1 is characterized in that described Cavity structural member straight joint butt joint.

32. concrete hollow board according to claim 1 is characterized in that at least one end of described Cavity structural member is supported on Cast-in-place concrete wall or bright beam or the dark beam.

33. concrete hollow board according to claim 32 is characterized in that described Cavity structural member base plate face flushes with the soffit.

34. concrete hollow board according to claim 1 is characterized in that described Cast-in-place concrete rib (23) or/and Cast-in-place concrete internal-rib (24) and wall or beam intersect and connect to integral body.

35. concrete hollow board according to claim 1 is characterized in that in described Cast-in-place concrete rib (23) and/or the Cast-in-place concrete internal-rib (24) prestressed reinforcement or prestress wire being arranged.

36. concrete hollow board according to claim 1 is characterized in that in described Cast-in-place concrete rib (23) and/or the Cast-in-place concrete internal-rib (24) no-cohesive prestressed reinforcement being arranged.

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