CN1594791A - A cavity formwork member - Google Patents

Abstract

A hollow shuttering member, including the upper board (1), surrounding sidewall (2), lower bottom (3), the upper board (1), surrounding sidewall (2), lower bottom (3) enclose into the polyhedral hollow shuttering member, characterized by that at least one horizontal corner of the lower part of the hollow shuttering member is a reentrant corner (4), insert at least one thin strip (5) in at least one of the upper board (1), surrounding sidewall (2), lower bottom (3), or there are thin strips (5) to expose. Thus, after the evacuated shuttering member is used for cast-in-situ building cover, the cast-in-situ rib between the evacuated shuttering member is inverse T shape, thus the mechanics capacity of the building is greatly improved, meanwhile, because at least one thin strip is clamped in the wall of the evacuated shuttering member, the ability of impact and collision resistance is large, the crack resistance is good, the intensity is high, the tenacity is good, which is suitable for cast-in-situ reinforced concrete or prestressed reinforced concrete building, building cover, wall, base bottom plate and open web bridge.

Description

A cavity formwork member

(1) Technical field

The present invention relates to a cavity formwork member.

(2) Background technology

At present, the cast-in-place concrete hollow floor is a widely used floor structure. The lightweight permanent tire molds filled in it include various hollow tubes and boxes, and the boxes are hollow or solid. For example, the patent No. ZL99249798.1, which the applicant applied for on November 29, 1999, is a utility model patent named "fiber-reinforced thin-walled member for reinforced concrete filling", which discloses a thin-walled formwork member, including an upper plate, The surrounding side walls, the lower bottom, and the upper plate, the surrounding side walls and the lower bottom form a polyhedral cavity. Another example is the patent No. ZL00203695.9 applied by Liang Jun, Shijiazhuang City, Hebei Province on February 23, 2000, and the name is called "combined concrete hidden rib floor cover plate" utility model patent, which discloses a formwork member in its specification sheet. It can be solid or hollow, and its shape can be made into rectangle, circle, polygon and other shapes according to design requirements. Another example is the patent No. ZL93206310.1 applied by Yu Shaohua in Tianjin on March 20, 1993, and the name is called "formwork member" utility model patent. It also discloses a thin-walled formwork member, which combines side walls with upper , The lower bottom is made of a fully enclosed fasting polyhedron structure, and the mold shell is equipped with reinforcing ribs, and is made of GRC or magnesium chloride GRC or sand-free ceramsite cement. Another example is that the application number applied by the applicant on November 23, 2001 is 01140106.0, the publication number is CN1356442, and the name is called "a kind of cavity structure formwork for cast-in-place reinforced concrete floor slab" patent application for invention. The cavity structure disclosed by it Formwork, including "upper plate, surrounding side walls, and lower bottom, the upper plate, surrounding side walls, and lower bottom form a polyhedral cavity member. This cavity member has the advantages of light weight, high strength, simple structure, and convenient construction and transportation. Features, at the same time, in actual use, the lower bottom can participate in the force, and can hang heavy objects without cracking the cast-in-place prefabricated joint surface. The cavity formwork components disclosed above are applied to the Miri Building The cover is both a formwork member and a prefabricated filling member. It has the characteristics of simple structure, high strength, excellent deformation resistance, anti-vibration performance, easy manufacture, and low cost. However, after being applied to the hollow floor, the cavity formwork member The cast-in-place concrete ribs formed between them are all rectangular cast-in-place concrete ribs, and their mechanical properties are not very reasonable. It is often necessary to increase the cross-sectional size of the cast-in-place concrete ribs, increase the amount of steel bars and concrete, and increase the cost of the floor. , the strength of this cavity formwork member is not high, the impact resistance is poor, and it is easy to be damaged during the handling and construction process, especially when it is hit or collided by various heavy objects and falling objects, it is often prone to damaged holes, resulting in The destruction of the cavity formwork component brings inconvenience to the construction, increases the construction cost accordingly, and even affects the construction period. Therefore, it is urgent to develop a new cavity formwork component.

(3) Contents of the invention

The object of the present invention is to provide a cavity formwork member, which has the advantages of improving the mechanical properties of the floor, reducing the cross-sectional size of the cast-in-place concrete rib, reducing the amount of steel bars and concrete, reducing the cost of the floor, convenient construction, high impact strength, It has the characteristics of good crack resistance, not easy to break, simple structure, easy production and low cost.

The solution of the present invention is based on the prior art, including an upper plate, surrounding side walls, and lower bottom, and the upper plate, surrounding side walls, and lower bottom form a polyhedral cavity formwork member, which is characterized in that the cavity formwork At least one transverse corner of the lower part of the component is a recessed corner, and at least one thin strip is clamped or exposed in at least one of the upper plate, the surrounding side wall, and the lower bottom. Like this, because the lateral corner of the lower bottom of the cavity formwork member is a recessed angle, after the cavity formwork member is applied to the cast-in-place concrete hollow floor, especially the ribbed floor, the cavity formwork member The cast-in-place concrete ribs in between form an inverted T-shaped rib, and its cross-sectional shape changes from a rectangle to an inverted T-shape, so the mechanical properties of the floor are greatly improved, which can reduce the cross-sectional size of the cast-in-place concrete ribs and reduce the amount of steel bars and concrete. , to reduce the cost of the floor, at the same time, because at least one thin strip is sandwiched in the wall of the cavity formwork member, it has high impact and collision resistance, good crack resistance, high strength, good toughness, and thin strips per unit weight The joint surface with the cement is large, and the corresponding gripping force is large. Moreover, the thickness of the wall of the cavity formwork member can be reduced, saving materials and reducing costs. When the cavity formwork member is impacted or collided, the cavity formwork The component is not easy to have damaged holes, even if there are damaged cracks, due to the dragging effect of the thin strip, it does not need to be repaired, and does not affect the subsequent construction, so the construction is convenient and the cost is low; if the thin strip still exposes the cavity formwork components In addition, after the cavity formwork component is applied to the cast-in-place concrete hollow floor, the bond with the cast-in-place concrete is stronger, and the integrity of the floor is better; in addition, the cavity formwork component also has the advantages of simple structure, easy manufacturing Easy, low cost, convenient construction, fast construction speed, etc., thereby achieving the purpose of the present invention, suitable for hollow floors, roofs, walls, foundation floors and hollow bridges of cast-in-place reinforced concrete or prestressed reinforced concrete , especially suitable for the use of hollow beamless floors.

The present invention is also characterized in that all the transverse corners of the lower part of the cavity formwork member are female corners, and the female corners are connected to form a female corner ring. In this way, when the cavity formwork component is applied to the cast-in-place concrete hollow floor, the cast-in-place concrete is poured into the above-mentioned inner corner ring, and a mutually orthogonal concrete I-rib structure is formed inside the hollow floor, which greatly improves the At the same time, because the lower part of the cavity formwork member is set as an inner corner, the rigidity and strength of the lower part of the cavity formwork member are improved. After being applied to the floor, the cast-in-place concrete will The components are firmly held and wrapped so that they are not easy to fall off, damage, or crack.

The present invention is also characterized in that at least one of the upper plate or the surrounding side wall or the lower bottom or the inner corner of the cavity formwork member is superimposed with a laminated layer. In this way, the upper plate, the surrounding side wall or the lower bottom or the inner corner are superimposed with a superimposed layer, which greatly reduces the production difficulty of the cavity formwork component, and at the same time greatly improves the impact resistance of the cavity formwork component. , reduces the loss rate of the product, and improves the production efficiency of the cavity formwork member.

The present invention is also characterized in that said thin strips are arranged in parallel or cross each other or form a web or a combination thereof. In this way, the thin strips are arranged in parallel, intersecting or forming a belt net or a combination thereof in the upper plate, side wall or lower bottom, so that the overall strength and rigidity of the cavity formwork member have been greatly strengthened, and its resistance The impact performance is better, and the structure is less likely to be damaged, which greatly reduces the damage rate and cost of cavity formwork components.

The present invention is also characterized in that said thin strips are provided with one layer, two layers or multiple layers. In this way, the thin strips are provided with one layer, two layers or multiple layers, which can meet the needs of various applications. The number of layers of the thin strips in the wall of the cavity formwork member can be determined according to the design requirements.

The present invention is also characterized in that the thin strip is a belt with holes, slits, grooves, ratchets, bumps, bumps with holes, indentations, burrs, exposed short fibers, rough surfaces or their composites, or is Braided tapes, packing tapes, multi-layer tapes, thin strips of equal or unequal width. In this way, holes, slits, grooves, ratchets, bumps, bumps with holes, indentations, burrs, exposed short fibers, rough surfaces or their composite belts are provided on the thin strips, or braided belts, packaging belts, Multi-layer belts, thin strips with equal or unequal widths can greatly improve the bonding strength between the thin strips and the wall material of the cavity formwork member, so that the thin strips will not loosen in the wall and lose their effect ; At the same time, there are many types and specifications of thin strips, which facilitates the selection of design and production application units.

The present invention is also characterized in that said thin strips are metal strips, organic strips or inorganic strips. In this way, the diversification of thin strip materials can be reasonably selected according to different requirements of the application, which can effectively reduce the material cost of the cavity formwork component and make the cavity formwork component easier to popularize and apply.

The present invention is also characterized in that the upper plate or the surrounding side wall or the lower bottom is provided with a convenient transporting piece. The carrier can be handles, hooks, rings or other devices. In this way, the cavity formwork 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 at least one of the upper plate, the surrounding side walls, and the lower bottom further contains reinforcements, or has reinforcements exposed. Reinforcement is steel bar, steel wire, prestressed tendon, steel mesh, steel wire mesh, fiber, fiber tow, fiber mesh cloth, non-woven fabric, thin metal strip, thin strip with holes, packing tape, braided tape at least one. In this way, the above-mentioned reinforcements are contained in the upper plate, the surrounding side walls or the lower bottom, which greatly improves their strength and rigidity, so that the cavity formwork components are not easy to be damaged during stacking, transportation, installation and construction, even if there is a small area Damage, because of the connection of reinforcements, does not need to be repaired, and can continue to be used. If there are reinforcements on the cavity formwork component exposed outside the cavity formwork component, when the cavity formwork component is applied to the cast-in-place concrete hollow floor, the exposed reinforcement and the cast-in-place concrete can be greatly improved. Improve the gripping force between the cast-in-situ concrete and the cavity formwork components, optimize the performance of the entire hollow floor; at the same time, the exposed reinforcements are also convenient for use as handles, rings or hooks when the cavity formwork components are transported.

The invention is also characterized in that thin strips or reinforcements are inserted into and anchored in the upper plate or lower bottom, or thin strips or reinforcements are inserted and anchored in the upper plate or lower bottom. within the surrounding side walls. In this way, thin strips or reinforcements in the surrounding side walls protrude and anchor in the upper plate or lower bottom, or thin strips or reinforcements in the upper plate or lower bottom protrude and anchor in the side walls, thus, The connection strength between the surrounding side walls and the upper plate or the lower bottom is greatly improved, which can effectively ensure that the cavity formwork components do not crack between the surrounding side walls and the upper plate or the lower bottom during transportation, installation, construction and use. , No loosening, no falling off, greatly reducing the breakage rate of cavity formwork components.

The feature of the present invention is that the horizontal section or vertical section shape of the polyhedral cavity formwork member is a rectangle, a square, a polygon, an arc polygon, a chamfer polygon, an arc polygon, a corrugated shape or a circle. In this way, the diversification of the shape of the polyhedral cavity formwork member makes the cavity formwork member applied to the cast-in-place concrete hollow floor, and correspondingly forms various cast-in-place concrete structures of different shapes, thus making the cast-in-place concrete hollow building The structure of the cover is more reasonable, which is convenient for the design and construction units to choose.

The present invention is also characterized in that at least one of internal corners, chamfers, grooves, pits, holes, boss modules, convex lines, and external corners is provided on the cavity formwork member. In this way, when the cavity formwork components are applied to the cast-in-place concrete hollow floor, the cast-in-place concrete is poured into the inner corners, chamfers, grooves, pits, and holes, and a local cast-in-place concrete reinforcement structure can be formed accordingly; The boss modules, protruding lines, and external corners set on the cavity formwork can evacuate the unstressed concrete in the floor, further reduce the weight of the floor itself, save the amount of concrete, reduce the cost of the floor, and improve performance of the roof.

The present invention is also characterized in that the internal corners, chamfers, grooves, holes, and convex lines are arranged in parallel, orthogonal, oblique or vertical intersection or form a grid. In this way, when the cavity formwork component is applied to the cast-in-place concrete hollow floor, the internal corners, chamfers, grooves, holes, and convex lines on the cavity formwork component are parallel, orthogonal, oblique or mutually parallel, or perpendicular to each other. The overpass is set or formed into a grid, and after the concrete is poured at the above-mentioned parts, a parallel, orthogonal, oblique or overpass cast-in-place concrete reinforcement structure is formed correspondingly, which greatly improves the mechanical properties of the cast-in-place concrete floor.

The present invention is also characterized in that at least one of transverse inner corners, transverse chamfers, transverse grooves, transverse holes, and transverse raised lines is provided on the cavity formwork member, or the above-mentioned elements are parallel to each other or perpendicular to each other. , oblique, or gridded. In this way, when the cavity formwork components are applied to the cast-in-place concrete hollow floor, after the cast-in-place concrete is poured into the above-mentioned transverse inner corners, transverse chamfers, transverse holes, and transverse grooves, forms of self or mutual parallel and orthogonal The cast-in-place concrete reinforced structure with oblique crossing or grid formation improves the comprehensive performance of the cast-in-place hollow floor.

The present invention is also characterized in that at least one of vertical internal corners, vertical chamfers, vertical grooves, vertical holes, vertical ridges, or the above-mentioned itself or Parallel to each other, orthogonal, oblique or form a grid. In this way, when the cavity formwork components are applied to the cast-in-place concrete hollow floor, after the cast-in-place concrete is poured into the vertical inner corners, vertical chamfers, vertical grooves, and vertical holes, a parallel and positive structure is formed. The cast-in-place concrete reinforced structure that crosses, obliquely crosses or forms a grid greatly improves the bearing capacity of the cast-in-place concrete hollow floor and improves the comprehensive mechanical properties of the cast-in-place concrete hollow floor.

The present invention is also characterized in that at least one of stiffening ribs, stiffening rods, and reinforcing ribs is provided in the closed cavity of the cavity formwork member, or at least one of stiffening ribs and stiffening bars is exposed from the cavity formwork. There are thin strips or reinforcements exposed outside the component, or on the stiffeners, stiffeners, and ribs. In this way, when the cavity formwork member is applied to the cast-in-place concrete hollow floor, the stiffeners, stiffeners, and ribs or exposed stiffeners, stiffeners, and ribs set in the cavity formwork member can be integrated with the cast-in-place concrete. A composite structure combining cast-in-place and prefabrication is formed, and the internal stress system of the cast-in-place concrete floor is optimized. If there are reinforcements exposed thereon, the cavity formwork member and the cast-in-place concrete will be bonded more firmly, and the integrity of the floor will be better.

The present invention is also characterized in that lightweight materials are arranged in the closed cavity of the cavity formwork member. In this way, the impact resistance of the cavity formwork member is greatly improved, and the damage rate of the product during construction and application is reduced. At the same time, it also makes the cavity formwork components have better sound insulation, heat insulation, and thermal insulation properties; lightweight materials can be foamed plastics, expanded perlite, expanded vermiculite, foamed or aerated lightweight concrete, rock wool, ore Cotton, glass wool, ceramsite or ceramsite concrete, etc., the variety of lightweight materials makes it easy to obtain nearby materials during production, which is conducive to reducing production costs.

The present invention is also characterized in that the upper plate or the walls surrounding the side walls of the formwork member are made of lightweight materials. Like this, adopt light-weight material to make upper plate or the wall that surrounds side wall, have alleviated the own weight of cavity formwork member, have reduced the operation difficulty of transportation, installation.

The present invention is also characterized in that at least one of the upper plate or the side wall is or has a detachable movable part. In this way, it is convenient to check the condition inside the cavity formwork member at any time, and at the same time, it is also possible to partially or completely fill the interior of the cavity formwork member with lightweight materials, or install other components inside the cavity formwork member, such as junction boxes. , water and electricity pipelines, fire sprinklers, etc.

The present invention is also characterized in that at least one of the outer surfaces of the upper plate and the surrounding side wall is a corrugated, zigzag, brushed or rough outer surface. In this way, when the cavity formwork member is applied to the cast-in-place concrete hollow floor, because the surface is corrugated, zigzag, roughened or rough surface, the gap between the prefabricated cavity formwork member and the cast-in-place concrete The bonding force is stronger, which can greatly improve the overall performance of the floor.

The present invention is also characterized in that a positioning member is arranged on the cavity formwork member. The positioning member can be a pull ring, a pull hook, an iron wire, a supporting foot, a small protrusion, a small convex nail or other devices. In this way, when the cavity formwork components are applied to the cast-in-situ concrete hollow floor, the cavity formwork components can be accurately positioned to prevent the cavity formwork components from floating and shifting during pouring of concrete. The steel bar can be limited to effectively ensure the pouring quality of the floor.

The present invention is also characterized in that the cavity formwork components are provided with connectors for connecting the cavity formwork components with each other. Connectors can be steel bar, steel mesh, steel wire, steel wire mesh, angle steel, channel steel, L-shaped steel, T-shaped steel, ferrule, bolt, male and female groove, socket piece, sawtooth piece, convex groove, groove, bayonet, card Covers, holes, embedded iron parts, etc. In this way, when the cavity formwork components are applied to the cast-in-place concrete hollow floor, the connectors provided on the cavity formwork components can effectively and reliably control the distance between the cavity formwork components, and control the distance between the cast-in-place concrete ribs. The width and height ensure the pouring quality of the internal structure of the floor; at the same time, it is also conducive to the connection and positioning of the cavity formwork components, or the formation of group components to speed up the construction speed.

The present invention is also characterized in that at least two or more cavity formwork components are connected as a whole through connectors, and an inner rib cavity is formed between the cavity formwork components. In this way, when the cavity formwork components are applied to the cast-in-place concrete floor, the cast-in-place concrete enters the inner rib mold cavity, forming the cast-in-place concrete inner rib, and constitutes the cavity formwork assembly, thereby greatly improving the performance of the floor. construction efficiency and construction speed.

The present invention is also characterized in that the lower bottom is cement mortar, concrete, lightweight concrete, polymer concrete, polymer mortar lower bottom, or the upper plate of the formwork member or the wall of the surrounding side wall is cement fiber, cement Fiber mesh, cement steel mesh, cement steel wire mesh, concrete plywood, wood plywood, plastic, metal profiled panels, walls of lightweight concrete. In this way, the diversification of materials for the lower bottom, the upper plate and the surrounding side walls can make the cavity formwork components fully meet the needs of various situations, which is beneficial to reduce product costs.

The present invention is also characterized in that the lower bottom has a raised edge, or at least two or more cavity formwork members are connected into a group of formwork members through the raised edge. In this way, when the cavity formwork component is applied to the cast-in-situ concrete hollow floor, the overhang can replace the construction template, save the template installation process, reduce the material loss rate, and improve the construction efficiency at the same time. If a plurality of cavity formwork components are connected into a group of formwork components by picking edges, the construction efficiency of the cavity formwork components is higher and the construction cost is lower.

(4) Description of drawings

Fig. 1 is a schematic structural diagram of Embodiment 1 of the present invention. In the accompanying drawings, 1 is the upper plate, 2 is the surrounding side wall, 3 is the bottom, 4 is the inner corner, and 5 is the thin strip. In the following drawings, those with the same number have the same description. As shown in Figure 1, the upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedron cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners 4, and the upper plate 1 Thin strips 5 are provided in and around the side walls 2 .

Fig. 2 is a structural schematic diagram of Embodiment 2 of the present invention, the upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the transverse corner of the lower bottom of the cavity formwork member is provided with a female corner 4. The upper plate 1 and the surrounding side walls 2 are provided with thin strips 5, and the lower corners of the cavity formwork components are all set as internal corners 4, and the internal corners 4 are connected to form a female corner ring.

Fig. 3 is a structural schematic diagram of Embodiment 3 of the present invention, the upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners 4. Thin strips 5 are arranged in the upper plate 1 and the surrounding side walls 2, and a lamination layer 6 is superimposed on the lower bottom 3 thereof.

Fig. 4 is a schematic structural view of Embodiment 4 of the present invention. The upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners. 4. The upper plate 1 and the surrounding side walls 2 are provided with thin strips 5, and the thin strips 5 are parallel to each other and intersect to form a belt net.

Fig. 5 is a schematic structural view of Embodiment 5 of the present invention. The upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners. 4. The upper plate 1 and the surrounding side walls 2 are provided with thin strips 5, and the thin strips 5 are provided with two layers.

Fig. 6 is a schematic structural view of Embodiment 6 of the present invention. The upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners. 4. Thin strips 5 are arranged in the upper plate 1 and the surrounding side walls 2, and the thin strips 5 are perforated thin strips with unequal widths.

Fig. 7 is a schematic structural view of Embodiment 7 of the present invention. The upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners. 4. The upper plate 1 and the surrounding side walls 2 are provided with a thin strip 5, and the upper plate 1 is provided with a carrying piece 7 for easy transportation. The carrying piece 7 in the figure is a handle.

Fig. 8 is a schematic structural view of Embodiment 8 of the present invention. The upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners. 4. Thin strips 5 are set in the upper plate 1 and the surrounding side walls 2, and reinforcements 8 are also set in the lower bottom 3. The reinforcements 8 in the figure are steel wire mesh.

Fig. 9 is a structural schematic diagram of Embodiment 9 of the present invention. The upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners. 4. Thin strips 5 are arranged in the upper plate 1 and the surrounding side walls 2 , and reinforcements 8 are inserted into and anchored in the upper plate 1 in the surrounding side walls 2 .

Fig. 10 is a schematic structural view of Embodiment 10 of the present invention. The upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners. 4. Thin strips 5 are arranged in the upper plate 1 and the surrounding side walls 2, and the horizontal cross-sectional shape of the polyhedral cavity formwork member is polygonal.

Fig. 11 is a schematic structural view of Embodiment 11 of the present invention. The upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners. 4. Thin strips 5 are set in the upper plate 1 and the surrounding side walls 2, and chamfers 9, grooves 10, pits 11, holes 12, boss modules 13 and positive angle 15.

Fig. 12 is a schematic structural view of Embodiment 12 of the present invention. The upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the lower bottom of the cavity formwork member is surrounded by a horizontal lower bottom 3. The polyhedral cavity formwork member is provided with a female angle 4 at the lateral corner of the lower bottom of the cavity formwork member, thin strips 5 are arranged in the upper plate 1 and the surrounding side walls 2, and the cavity formwork member is also simultaneously There are chamfers 9 , grooves 10 and ridges 14 .

Fig. 13 is a schematic structural view of Embodiment 13 of the present invention. The upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners. 4. The upper plate 1 and the surrounding side walls 2 are provided with thin strips 5, and the cavity formwork members are also provided with transverse inner corners 4, transverse chamfers 10 and transverse convex lines 14. The above-mentioned transverse structures themselves or mutually Parallel and orthogonal settings.

Fig. 14 is a schematic structural view of Embodiment 14 of the present invention. The upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners. 4. The upper plate 1 and the surrounding side walls 2 are provided with thin strips 5, and the cavity formwork members are also provided with vertical internal corners 4, vertical chamfers 9, vertical grooves 10, and vertical holes 12 and the vertical ribs 14, the above-mentioned vertical structures themselves or are arranged in parallel with each other.

Fig. 15 is a schematic structural view of Embodiment 15 of the present invention. The upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners. 4. Thin strips 5 are provided in the upper plate 1 and the surrounding side walls 2, and stiffeners 16, stiffeners 17 and ribs 18 are also arranged in the closed cavity of the cavity formwork member, and stiffeners 16 and stiffeners 17 has a part to expose the outside of the cavity formwork member.

Fig. 16 is a schematic structural view of Embodiment 16 of the present invention. The upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners. 4. The upper plate 1 and the surrounding side walls 2 are provided with a thin strip 5, and the closed cavity of the cavity formwork member is completely filled with a light material 19. The light material 19 shown in the figure is expanded perlite.

Fig. 17 is a schematic structural view of Embodiment 17 of the present invention. The upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners. 4. The upper plate 1 and the surrounding side walls 2 are provided with thin strips 5 , and the surrounding side walls 2 are made of ceramsite concrete lightweight material 19 .

Fig. 18 is a schematic structural view of Embodiment 18 of the present invention. The upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners. 4. Thin strips 5 are arranged on the upper plate 1 and the surrounding side walls 2, and the upper plate 1 is a movable and detachable fastening cover plate.

Fig. 19 is a schematic structural view of Embodiment 19 of the present invention. The upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners. 4. A thin strip 5 is provided in the upper plate 1 and the surrounding side walls 2, and the wall of the upper plate 1 is a rough outer surface.

Fig. 20 is a schematic structural view of Embodiment 20 of the present invention. The upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners. 4. Thin strips 5 are arranged in the upper plate 1 and the surrounding side walls 2, and a plurality of positioning members 20 are also arranged on the cavity formwork member.

Fig. 21 is a schematic structural view of Embodiment 21 of the present invention. The upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners. 4. Thin strips 5 are provided on the upper plate 1 and the surrounding side walls 2, and a plurality of connecting pieces 21 for connecting and positioning the cavity formwork components are also provided on the cavity formwork components, as shown in the figure The connecting piece 21 is a rod and a hole.

Fig. 22 is a schematic structural view of Embodiment 22 of the present invention. The upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners. 4. Thin strips 5 are arranged in the upper plate 1 and the surrounding side walls 2 , and a plurality of cavity formwork components are connected as a whole through connectors 21 , and the distance between the cavity formwork components constitutes the inner rib cavity 22 .

Fig. 23 is a schematic structural view of Embodiment 23 of the present invention. The upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners. 4. The upper plate 1 and the surrounding side walls 2 are provided with a thin strip 5, and the lower bottom 3 protrudes outwards with a raised edge 23. The figure shows that multiple cavity formwork members are connected into a group mold through the raised edge 23 Shell member, cavity mold cavity 22 is formed between the shell members.

(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 an upper plate 1, surrounding side walls 2, and lower bottom 3, and the upper plate 1, surrounding side walls 2, and lower bottom 3 form a polyhedral cavity formwork member, which is characterized in that the cavity formwork At least one transverse corner of the lower part of the component is a female corner 4, and at least one thin strip 5 is clamped in at least one of the upper plate 1, the surrounding side wall 2, and the lower bottom 3, or the thin strip 5 is exposed. Fig. 1 is a schematic structural diagram of Embodiment 1 of the present invention. In the accompanying drawings, 1 is the upper plate, 2 is the surrounding side wall, 3 is the bottom, 4 is the inner corner, and 5 is the thin strip. In the following drawings, those with the same number have the same description. As shown in Figure 1, the upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedron cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners 4, and the upper plate 1 Thin strips 5 are provided in and around the side walls 2 .

The present invention is also characterized in that all transverse corners of the lower part of the cavity formwork member are internal corners 4, and the internal corners 4 are connected to form a female corner ring. Fig. 2 is a structural schematic diagram of Embodiment 2 of the present invention, the upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the transverse corner of the lower bottom of the cavity formwork member is provided with a female corner 4. The upper plate 1 and the surrounding side walls 2 are provided with thin strips 5, and the lower corners of the cavity formwork components are all set as internal corners 4, and the internal corners 4 are connected to form a female corner ring.

The present invention is also characterized in that a lamination layer 6 is laminated in at least one of the upper plate 1 or the surrounding side wall 2 or the lower bottom 3 or the inner corner 4 of the cavity formwork member. Fig. 3 is a structural schematic diagram of Embodiment 3 of the present invention, the upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners 4. Thin strips 5 are arranged in the upper plate 1 and the surrounding side walls 2, and a lamination layer 6 is superimposed on the lower bottom 3 thereof.

The present invention is also characterized in that the thin strips 5 are arranged in parallel or cross each other or form a belt net or a combination thereof. Fig. 4 is a schematic structural view of Embodiment 4 of the present invention. The upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners. 4. The upper plate 1 and the surrounding side walls 2 are provided with thin strips 5, and the thin strips 5 are parallel to each other and intersect to form a belt net.

The present invention is also characterized in that said thin strip 5 is provided with one, two or more layers. Fig. 5 is a schematic structural view of Embodiment 5 of the present invention. The upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners. 4. The upper plate 1 and the surrounding side walls 2 are provided with thin strips 5, and the thin strips 5 are provided with two layers.

The present invention is also characterized in that the thin strip 5 is a belt with holes, slots, grooves, ratchets, bumps, bumps with holes, indentations, burrs, exposed short fibers, rough surfaces, or their composites, or It is a braided belt, a packaging belt, a multi-layer belt, and the thin strip 5 has equal or unequal width. Fig. 6 is a schematic structural view of Embodiment 6 of the present invention. The upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners. 4. Thin strips 5 are arranged in the upper plate 1 and the surrounding side walls 2, and the thin strips 5 are perforated thin strips with unequal widths.

The present invention is also characterized in that the thin strip 5 is a metal strip, an organic strip or an inorganic strip. As shown in Figure 6, the upper plate 1, the surrounding side walls 2 and the lower bottom 3 encircle and form a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners 4, and the upper plate 1 and A thin strip 5 is provided in the peripheral side wall 2, which thin strip 5 is a metal strip.

The present invention is also characterized in that the upper plate 1 or the surrounding side walls 2 or the lower bottom 3 are provided with a carrier 7 for easy transportation. The carrier 7 can be a handle, a hook, a ring or other devices. Fig. 7 is a schematic structural view of Embodiment 7 of the present invention. The upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners. 4. The upper plate 1 and the surrounding side walls 2 are provided with a thin strip 5, and the upper plate 1 is provided with a carrying piece 7 for easy transportation. The carrying piece 7 in the figure is a handle.

The present invention is also characterized in that at least one of the upper plate 1 , the surrounding side wall 2 and the lower bottom 3 further contains reinforcements 8 or has reinforcements 8 exposed. Reinforcement 8 is steel bar, steel wire, prestressed tendon, steel mesh, steel wire mesh, fiber, fiber tow, fiber mesh cloth, non-woven fabric, thin metal strip, thin strip with holes, packing tape, braided tape at least one of . Fig. 8 is a schematic structural view of Embodiment 8 of the present invention. The upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners. 4. Thin strips 5 are set in the upper plate 1 and the surrounding side walls 2, and reinforcements 8 are also set in the lower bottom 3. The reinforcements 8 in the figure are steel wire mesh.

The present invention is also characterized in that thin strips 5 or reinforcements 8 extend into and anchor in the upper plate 1 or lower bottom 3 in the surrounding side wall 2, or there are thin strips in the upper plate 1 or lower bottom 3 5 or reinforcement 8 protrudes and anchors in the surrounding side wall 2. Fig. 9 is a structural schematic diagram of Embodiment 9 of the present invention. The upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners. 4. Thin strips 5 are arranged in the upper plate 1 and the surrounding side walls 2 , and reinforcements 8 are inserted into and anchored in the upper plate 1 in the surrounding side walls 2 .

The feature of the present invention is that the horizontal section or vertical section shape of the polyhedral cavity formwork member is a rectangle, a square, a polygon, an arc polygon, a chamfer polygon, an arc polygon, a corrugated shape or a circle. Fig. 10 is a schematic structural view of Embodiment 10 of the present invention. The upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners. 4. Thin strips 5 are arranged in the upper plate 1 and the surrounding side walls 2, and the horizontal cross-sectional shape of the polyhedral cavity formwork member is polygonal.

The present invention is also characterized in that the cavity formwork member is provided with internal corners 4, chamfers 9, grooves 10, pits 11, holes 12, boss modules 13, convex strips 14, and male corners 15. at least one. Fig. 11 is a schematic structural view of Embodiment 11 of the present invention. The upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners. 4. Thin strips 5 are set in the upper plate 1 and the surrounding side walls 2, and chamfers 9, grooves 10, pits 11, holes 12, boss modules 13 and positive angle 15. Fig. 12 is a schematic structural view of Embodiment 12 of the present invention. The upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners. 4. Thin strips 5 are set in the upper plate 1 and the surrounding side walls 2, and chamfers 9, grooves 10 and raised lines 14 are also set on the cavity formwork components.

The present invention is also characterized in that the internal corners 4, chamfers 9, grooves 10, holes 12, and convex lines 14 themselves or each other are arranged in parallel, orthogonal, oblique or vertical intersection or form a grid. As shown in Figure 11, the upper plate 1, the surrounding side walls 2 and the lower bottom 3 encircle and form a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners 4, and the upper plate 1 and Thin strips 5 are arranged in the surrounding side walls 2, and the inner corners 4, chamfers 9, grooves 10, and holes 12 are arranged in parallel, orthogonal, oblique or vertical intersection or form a grid.

The present invention is also characterized in that the cavity formwork member is provided with at least one of a transverse inner corner 4, a transverse chamfer 9, a transverse groove 10, a transverse hole 12, and a transverse raised line 14, or the above-mentioned itself or Parallel to each other, orthogonal, oblique or form a grid. Fig. 13 is a schematic structural view of Embodiment 13 of the present invention. The upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners. 4. The upper plate 1 and the surrounding side walls 2 are provided with thin strips 5, and the cavity formwork members are also provided with transverse inner corners 4, transverse chamfers 10 and transverse convex lines 14. The above-mentioned transverse structures themselves or mutually Parallel and orthogonal settings.

The present invention is also characterized in that at least one of vertical internal corners 4, vertical chamfers 9, vertical grooves 10, vertical holes 12, and vertical ridges 14 is provided on the cavity formwork member. , or the above self or mutually parallel, orthogonal, oblique or form a grid. Fig. 14 is a schematic structural view of Embodiment 14 of the present invention. The upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners. 4. The upper plate 1 and the surrounding side walls 2 are provided with thin strips 5, and the cavity formwork members are also provided with vertical internal corners 4, vertical chamfers 9, vertical grooves 10, and vertical holes 12 and the vertical ribs 14, the above-mentioned vertical structures themselves or are arranged in parallel with each other.

The present invention is also characterized in that at least one of stiffening rib 16, stiffening rod 17, and reinforcing rib 18 is arranged in the closed cavity of the cavity formwork member, or at least one of stiffening rib 16 and stiffening rod 17 is arranged. Thin strips 5 or reinforcements 8 are exposed outside the cavity formwork member, or on the stiffening ribs 16 , stiffening rods 17 , and reinforcing ribs 18 . Fig. 15 is a schematic structural view of Embodiment 15 of the present invention. The upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners. 4. Thin strips 5 are provided in the upper plate 1 and the surrounding side walls 2, and stiffeners 16, stiffeners 17 and ribs 18 are also arranged in the closed cavity of the cavity formwork member, and stiffeners 16 and stiffeners 17 has a part to expose the outside of the cavity formwork member.

The present invention is also characterized in that a lightweight material 19 is arranged in the closed cavity of the cavity formwork member. Fig. 16 is a schematic structural view of Embodiment 16 of the present invention. The upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners. 4. The upper plate 1 and the surrounding side walls 2 are provided with a thin strip 5, and the closed cavity of the cavity formwork member is completely filled with a light material 19. The light material 19 shown in the figure is expanded perlite.

The invention is also characterized in that the walls of the upper plate 1 or surrounding side walls 2 of said formwork members are made of lightweight material 19 . Fig. 17 is a schematic structural view of Embodiment 17 of the present invention. The upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners. 4. The upper plate 1 and the surrounding side walls 2 are provided with thin strips 5 , and the surrounding side walls 2 are made of ceramsite concrete lightweight material 19 .

The present invention is also characterized in that at least one of the upper plate 1 or the side wall 2 is or has a detachable movable part. Fig. 18 is a schematic structural view of Embodiment 18 of the present invention. The upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners. 4. Thin strips 5 are arranged on the upper plate 1 and the surrounding side walls 2, and the upper plate 1 is a movable and detachable fastening cover plate.

The present invention is also characterized in that at least one of the outer surfaces of the upper plate 1 and the surrounding side walls 2 is a corrugated, zigzag, brushed or rough outer surface. Fig. 19 is a schematic structural view of Embodiment 19 of the present invention. The upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners. 4. A thin strip 5 is provided in the upper plate 1 and the surrounding side walls 2, and the wall of the upper plate 1 is a rough outer surface.

The present invention is also characterized in that a positioning member 20 is arranged on the cavity formwork member. Fig. 20 is a schematic structural view of Embodiment 20 of the present invention. The upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners. 4. Thin strips 5 are arranged in the upper plate 1 and the surrounding side walls 2, and a plurality of positioning members 20 are also arranged on the cavity formwork member.

The present invention is also characterized in that the cavity formwork components are provided with connecting pieces 21 for connecting the cavity formwork components with each other. Fig. 21 is a schematic structural view of Embodiment 21 of the present invention. The upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners. 4. Thin strips 5 are provided on the upper plate 1 and the surrounding side walls 2, and a plurality of connecting pieces 21 for connecting and positioning the cavity formwork components are also provided on the cavity formwork components, as shown in the figure The connecting piece 21 is a rod and a hole.

The present invention is also characterized in that at least two or more cavity formwork components are connected as a whole through connectors 21, and an inner rib cavity 22 is formed between the cavity formwork components. Fig. 22 is a schematic structural view of Embodiment 22 of the present invention. The upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners. 4. Thin strips 5 are arranged in the upper plate 1 and the surrounding side walls 2 , and a plurality of cavity formwork components are connected as a whole through connectors 21 , and the distance between the cavity formwork components constitutes the inner rib cavity 22 .

The present invention is also characterized in that the lower bottom 3 is the lower bottom of cement mortar, concrete, light concrete, polymer concrete, polymer mortar, or the upper plate 1 of the formwork member or the wall of the surrounding side wall 2 is cement Fiber, cement fiber mesh, cement steel mesh, cement steel wire mesh, concrete rubber board, wood rubber board, plastic, metal profiled board, and the wall of lightweight concrete. As shown in Figure 21, the upper plate 1, the surrounding side walls 2 and the lower bottom 3 encircle and form a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners 4, and the upper plate 1 and A thin strip 5 is arranged in the surrounding side wall 2, and its upper plate 1, surrounding side wall 2 and lower bottom 3 are fiber cement mortar walls.

The present invention is also characterized in that the lower bottom 3 has a raised edge 23, or at least two cavity formwork components are connected through the raised edge 23 to form a group of formwork components. Fig. 23 is a schematic structural view of Embodiment 23 of the present invention. The upper plate 1, the surrounding side walls 2 and the lower bottom 3 enclose a polyhedral cavity formwork member, and the lateral corners of the lower bottom of the cavity formwork member are provided with internal corners. 4. The upper plate 1 and the surrounding side walls 2 are provided with a thin strip 5, and the lower bottom 3 protrudes outwards with a raised edge 23. The figure shows that multiple cavity formwork members are connected into a group mold through the raised edge 23 Shell member, cavity mold cavity 22 is formed between the shell members.

During the implementation of the present invention, cement binder and glass fiber mesh cloth can be used to form at least one layered multi-layer structure of one layer of cement binder, one layer of glass fiber mesh cloth and one layer of binder in the mold. The upper plate 1 or the surrounding side wall 2 with the opening side concave inwards is a hollow formwork member with a thin strip 5 sandwiched therein. After demoulding and curing to the specified age, the open cavity formwork member is obtained. Then, the lower bottom The lower bottom 3 is made in the mold, and the slurry of the lower bottom 3 can be cement mortar or cement concrete, and a steel mesh reinforcement 8 can also be placed in the lower bottom 3. Before the lower bottom 3 slurry is solidified and hardened, the pre-made opening The cavity formwork member and the lower bottom 3 are bonded into a whole, and after the lower bottom 3 is solidified and hardened, the mold is demoulded, and after curing to a specified age, the cavity formwork member is obtained.

Claims (25)

1. A cavity formwork member, comprising an upper plate (1), surrounding side walls (2), and a lower bottom (3), surrounded by an upper plate (1), surrounding side walls (2), and a lower bottom (3) The polyhedral cavity formwork member is characterized in that at least one transverse corner of the lower part of the cavity formwork member is a female corner (4), and the upper plate (1), the surrounding side walls (2), and the lower bottom (3) At least one thin strip (5) is sandwiched in at least one of them, or the thin strip (5) is exposed. 2. A cavity formwork member according to claim 1, characterized in that all the transverse corners of the lower part of the cavity formwork member are internal corners (4), and the internal corners (4) are connected to form a female corner ring . 3. A cavity formwork member according to claim 1, characterized in that the upper plate (1) or surrounding side walls (2) or lower bottom (3) or inner corner (4) of the cavity formwork member A lamination layer (6) is superimposed in at least one of them. 4. A cavity formwork member according to claim 1, characterized in that said thin strips (5) are arranged in parallel or cross each other or form a belt net or a combination thereof. 5. A cavity formwork member according to claim 1, characterized in that said thin strips (5) are provided with one layer, two layers or multiple layers. 6. A cavity formwork member according to claim 1, characterized in that said thin strip (5) has holes, slits, grooves, ratchets, bumps, bumps with holes, indentations, Burrs, exposed short fibers, rough surfaces or their composite belts, or braided belts, packaging belts, multi-layer belts, and thin strips (5) have equal or unequal bandwidths. 7. A cavity formwork member according to claim 1, characterized in that said thin strips (5) are metal strips, organic strips or inorganic strips. 8. A cavity formwork member according to claim 1, characterized in that the upper plate (1) or the surrounding side walls (2) or the lower bottom (3) are provided with convenient handling parts ( 7). 9. A cavity formwork member according to claim 1, characterized in that at least one of the upper plate (1), surrounding side walls (2) and lower bottom (3) also contains reinforcements ( 8), or a reinforcement (8) is exposed. 10. A cavity formwork member according to claim 9, characterized in that thin strips (5) or reinforcements (8) protrude into and anchor on the upper plate in the surrounding side walls (2) (1) or the lower bottom (3), or the upper plate (1) or the lower bottom (3) has thin strips (5) or reinforcements (8) extending into and anchored in the surrounding side walls (2). 11. A cavity formwork member according to any one of claims 1 to 10, characterized in that the shape of the polyhedral cavity formwork member in horizontal section or vertical section is rectangle, square, polygon , rounded polygon, chamfered polygon, polygonal arc, corrugated, or circular. 12. A cavity form member according to any one of claims 1 to 10, characterized in that the cavity form member is provided with internal corners (4), chamfers (9), At least one of a groove (10), a pit (11), a hole (12), a boss module (13), a convex line (14), and an external angle (15). 13. A cavity formwork member according to claim 12, characterized in that said internal corners (4), chamfers (9), grooves (10), holes (12), and raised lines (14 ) themselves or each other in parallel, orthogonal, oblique or interchange setting or form a grid. 14. A cavity formwork component for cast-in-place concrete according to claim 13, characterized in that the cavity formwork component is provided with a transverse inner corner (4), a transverse chamfer (9), a transverse At least one of the grooves (10), the transverse holes (12), the transverse ridges (14), or the above-mentioned ones are parallel, orthogonal, oblique or form a grid by themselves or each other. 15. A cavity formwork component for cast-in-place concrete according to claim 13, characterized in that the cavity formwork component is provided with vertical inner corners (4) and vertical chamfers (9) , at least one of vertical grooves (10), vertical holes (12), vertical ridges (14), or the above-mentioned self or mutual parallel, orthogonal, oblique or form a grid. 16. A cavity formwork member according to any one of claims 1 to 10, characterized in that stiffeners (16) and stiffeners are arranged in the closed cavity of the cavity formwork member (17), at least one of stiffeners (18), or at least one of stiffeners (16), stiffeners (17) exposed outside the cavity formwork member, or stiffeners (16), stiffeners (17) ), thin strips (5) or reinforcements (8) are also exposed on the ribs (18). 17. A cavity formwork member according to any one of claims 1 to 10, characterized in that a lightweight material (19) is arranged in the closed cavity of the cavity formwork member. 18. A cavity formwork member for cast-in-place concrete according to claim 17, characterized in that the upper plate (1) or the surrounding side walls (2) of the formwork member are made of lightweight materials ( 19). 19. A cavity formwork member according to any one of claims 1 to 10, characterized in that at least one of the upper plate (1) or the side wall (2) is or has a detachable moving parts. 20. A cavity formwork member according to any one of claims 1 to 10, characterized in that at least one of the outer surfaces of the upper plate (1) and the surrounding side walls (2) is Corrugated, serrated, brushed or matte outer surface. 21. A cavity formwork member according to any one of claims 1 to 10, characterized in that a positioning member (20) is arranged on the cavity formwork member. 22. A cavity formwork member according to any one of claims 1 to 10, characterized in that the cavity formwork member is provided with connecting pieces for connecting the cavity formwork members to each other (twenty one). 23. A cavity formwork component according to claim 22, characterized in that at least two cavity formwork components are connected as a whole through connectors (21), and an inner rib mold is formed between the cavity formwork components cavity (22). 24. A cavity formwork member for cast-in-place concrete according to any one of claims 1 to 10, characterized in that the lower bottom (3) is cement mortar, concrete, lightweight concrete, aggregate The lower bottom of concrete and polymer mortar, or the upper plate (1) of the formwork member or the surrounding side wall (2) is made of cement fiber, cement fiber mesh, cement steel mesh, cement steel wire mesh, concrete rubber board, wood Plastic panels, plastics, metal profiled panels, lightweight concrete walls. 25. A cavity formwork member for cast-in-place concrete according to any one of claims 1 to 10, characterized in that the lower bottom (3) has raised edges (23), or at least two The above cavity formwork components are connected into groups of formwork components through pick-ups (23).

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