One-way dense rib steel bar truss concrete combined non-dismantling formwork for hollow floor system

Abstract

The utility model discloses a one-way dense rib steel bar truss concrete combined non-dismantling formwork for a hollow floor system, which comprises a one-way steel bar truss and a bottom plate which are transversely arranged, the one-way steel bar truss is positioned above the bottom plate, and the one-way steel bar truss comprises an upper full-length steel bar, a lower full-length steel bar and a lower full-length steel bar, the upper full-length rib is connected with the upper end of the bottom plate through a wave rib; a plurality of cover plates are further arranged on the upper end face of the bottom plate. The one-way steel bar trusses are arranged above the bottom plates, during transportation, the one-way steel bar trusses of the bottom plate located on the lower portion are arranged upwards, the one-way steel bar trusses of the bottom plate located on the upper portion are arranged downwards, and every two adjacent one-way steel bar trusses can achieve the purpose of reducing the occupied transportation size in a staggered buckling mode.

Description

Technical Field

[0001] The utility model belongs to the technical field of construction, and particularly relates to a one-way ribbed steel truss concrete composite non-removable formwork for a hollow floor slab. Background Technique

[0002] With the rapid development of the construction industry in China, the ribbed floor slab is a new type of structural system that has emerged and been gradually widely used in recent years to meet the needs of large-span and large-bay large-space buildings on the basis of learning from foreign advanced design and construction experiences. Compared with the ordinary reinforced concrete structural system, it can effectively save a large amount of concrete and steel under the same conditions, improve the space utilization rate, greatly reduce the self-weight of the floor slab, and improve the bearing capacity.

[0003] Most of the existing non-removable formworks for ribbed floor slabs are composed of thin plates and transverse and longitudinal ribs with a small spacing. They have novel and beautiful shapes, light self-weights, good seismic performance, and remarkable economic effects. For example, the bidirectional ribbed steel truss concrete composite non-removable formwork for a hollow floor slab disclosed in the patent number CN116905801A that has been applied for includes a steel truss in a grid shape formed by the intersection of vertical and horizontal directions and a bottom plate, and the steel truss in a grid shape formed by the intersection of vertical and horizontal directions is arranged above the bottom plate.

[0004] Further research finds that the non-removable formwork for a ribbed floor slab composed of transverse and longitudinal ribs needs to be placed on a transport vehicle in a stacked manner during transportation, which seriously occupies the transportation volume and indirectly increases the use cost; in addition, although the ribbed floor slab composed of transverse and longitudinal ribs enhances the stiffness of the bottom plate, it also indirectly increases the quantity of materials and the resulting production cost. Therefore, it needs to be improved to achieve the purpose of reducing the use cost, production cost, and the volume occupied by transportation while ensuring the stiffness. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a one-way ribbed steel truss concrete composite non-removable formwork for a hollow floor slab, and the purpose of reducing the occupied transportation volume is achieved by the way that two one-way steel trusses on two bottom plates are buckled together.

[0006] The utility model provides the following technical solutions:

[0007] A one-way ribbed steel truss concrete combined non-removable formwork for hollow floor slabs, comprising a one-way steel truss arranged horizontally and a bottom plate. The one-way steel truss is located above the bottom plate. The one-way steel truss includes upper continuous bars, and the upper continuous bars are connected to the upper end of the bottom plate through corrugated bars. The upper continuous bars include a first continuous bar and a second continuous bar. The first continuous bar and the second continuous bar are located on the same horizontal plane and are arranged parallel to each other. The first continuous bar and the second continuous bar are connected by stirrups. The corrugated bars include a first corrugated bar and a second corrugated bar. The upper end of the first corrugated bar is arranged on the first continuous bar along the length direction of the upper continuous bar, and the lower end of the first corrugated bar is connected to the bottom plate. The upper end of the second corrugated bar is arranged on the second continuous bar along the length direction of the upper continuous bar, and the lower end of the second corrugated bar is connected to the bottom plate. A plurality of cover plates are further arranged above the bottom plate. A closed lightweight support structure is arranged between each cover plate and the bottom plate. The lightweight support structure is a hollow floor slab core mold. The inner sides of the two ends of the upper end of the stirrup are respectively connected to the outer sides of the first continuous bar and the second continuous bar. A plurality of stirrups are provided, and the plurality of stirrups are arranged in sequence along the length direction of the upper continuous bar. The lower inner end face of the stirrup is not lower than the upper end face of the bottom plate.

[0008] Preferably, the cover plate includes an upper cover plate. The upper cover plate is arranged above the bottom plate. The edge of the lower end face of the upper cover plate is connected to the bottom plate through a surrounding side plate. The lower end face of the upper cover plate, the surrounding side plate and the upper end face of the bottom plate jointly enclose the lightweight support structure.

[0009] Preferably, the lightweight support structure can also be replaced by a foam block, a plastic box mold or a wire mesh box.

[0010] Preferably, the upper cover plate is a concrete slab. A steel mesh is embedded in the concrete slab, and the steel bars in the steel mesh have extended segments exceeding the upper cover plate. A closed lightweight support structure is arranged below the upper cover plate.

[0011] Preferably, positioning bosses or positioning grooves for connecting with the surrounding side plates are respectively arranged on the lower end face of the upper cover plate and the upper end face of the bottom plate. The surrounding side plate is a calcium silicate board or a cement fiber board.

[0012] Preferably, a reinforcing member is further arranged inside the bottom plate. The reinforcing member is one or any combination of a wire mesh, steel fibers and carbon fibers.

[0013] Preferably, the upper end of the first corrugated bar is arranged at the inner side, outer side or lower side position of the first continuous bar; the upper end of the second corrugated bar is arranged at the inner side, outer side or lower side position of the second continuous bar.

[0014] Preferably, a plurality of the one-way steel bar trusses are provided, the plurality of the one-way steel bar trusses are arranged parallel to each other, and the plurality of the one-way steel bar trusses are arranged sequentially along the longitudinal direction of the base plate.

[0015] Preferably, a plurality of longitudinal steel wires are passed through the lower ends of the first wave ribs and the second wave ribs, and a plurality of transverse steel wires are also provided on the upper parts of the longitudinal steel wires. The plurality of longitudinal steel wires and transverse steel wires are staggered to form a steel wire mesh, and the steel wire mesh is buried in the bottom plate.

[0016] Preferably, both ends of each of the longitudinal steel wire and the transverse steel wire pass through the side surface of the bottom plate and extend outward for a certain length.

[0017] Preferably, the lower end surface of the bottom plate is also provided with alkali-resistant glass fiber mesh cloth.

[0018] Preferably, a fixing block for connecting with the lightweight support structure is also pre-embedded in the upper end surface of the base plate, or the lower end of the lightweight support structure is cast to a certain depth inside the base plate.

[0019] Preferably, the edges of the bottom plate are provided with one or any combination of an inclination angle and a shear groove.

[0020] Preferably, the lower ends of the first wave ribs and the second wave ribs are bent inward or outward at a certain angle along the longitudinal direction, and the bent portions are pre-buried inside the bottom plate.

[0021] Preferably, a reinforcing rib is respectively provided at the lower end of the first wave rib and the second wave rib along the length direction thereof, and the reinforcing rib is pre-buried inside the bottom plate.

[0022] Preferably, the first wave ribs and the second wave ribs can also be formed by connecting a plurality of V-shaped steel bars through upper through-length bars.

[0023] Preferably, the base plate is one of a calcium silicate board, a concrete board, a cement mortar board, and a cement fiber board.

[0024] Compared with the prior art, the utility model has the following beneficial effects:

[0025] The utility model discloses a one-way dense-ribbed steel bar truss concrete combined non-disassembly formwork for hollow floor slabs. By arranging the one-way steel bar truss above the bottom plate, during transportation, the one-way steel bar truss of the bottom plate located at the bottom is arranged upward, and the one-way steel bar truss of the bottom plate located at the top is arranged downward. The one-way steel bar trusses on the two bottom plates can be staggered and interlocked to achieve the purpose of reducing the occupied transportation volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present utility model, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0027] Figure 1 It is a schematic structural diagram of the present utility model.

[0028] Figure 2 It is a schematic structural diagram of the corrugated rib of the present utility model.

[0029] Figure 3 It is a schematic structural diagram of the cover plate of the present utility model.

[0030] Figure 4 For the present utility model Figure 3 A partial enlarged schematic diagram at position A.

[0031] Figure 5 It is a schematic structural diagram of the steel bar mesh of the present utility model. Specific embodiments

[0032] To make the purpose, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope protected by the present utility model.

[0033] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the present utility model to be protected, but only represents the selected embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope protected by the present utility model.

[0034] Example 1

[0035] Please refer to Figures 1-5As shown in the figure, a one-way ribbed steel truss concrete composite formwork for hollow floor slabs, which is not required to be removed, includes a one-way steel truss arranged horizontally and a bottom plate 2. The one-way steel truss is located above the bottom plate 2. The one-way steel truss includes upper continuous bars 1, and the upper continuous bars 1 are connected to the upper end of the bottom plate 2 through corrugated bars 3. The upper continuous bars 1 include a first continuous bar 11 and a second continuous bar 12. The first continuous bar 11 and the second continuous bar 12 are located on the same horizontal plane and are arranged parallel to each other. The first continuous bar 11 and the second continuous bar 12 are connected by stirrups 4. The corrugated bars include a first corrugated bar 31 and a second corrugated bar 32. The upper end of the first corrugated bar 31 is arranged on the first continuous bar 11 along the length direction of the upper continuous bars 1, the lower end of the first corrugated bar 31 is connected to the bottom plate 2, the upper end of the second corrugated bar 32 is arranged on the second continuous bar 12 along the length direction of the upper continuous bars 1, and the lower end of the second corrugated bar 32 is connected to the bottom plate 2. A plurality of cover plates 5 are further arranged above the bottom plate 2. A closed lightweight support structure is further arranged between each cover plate 5 and the bottom plate 2. The lightweight support structure is a hollow floor slab core mold. The inner sides of the two ends of the upper part of the stirrup 4 are respectively connected to the outer sides of the first continuous bar 11 and the second continuous bar 12. A plurality of stirrups 4 are arranged, and the plurality of stirrups 4 are arranged in sequence along the length direction of the upper continuous bars 1. The lower inner end surface of the stirrup 4 is not lower than the upper end surface of the bottom plate 2. By arranging a one-way steel truss above the bottom plate, during transportation, for the bottom plate located below, its one-way steel truss is arranged upwards, and for the bottom plate located above, its one-way steel truss is arranged downwards. The one-way steel trusses on the two bottom plates can be buckled in a staggered manner to achieve the purpose of reducing the occupied transportation volume. When the existing hollow floor slab is poured, a layer of concrete is poured above the hollow floor slab core mold. The setting of the cover plate is used to replace the concrete poured above the hollow floor slab core mold, improve the prefabrication rate, and there is no need to pour concrete above the hollow floor slab core mold during later construction.

[0036] The cover plate 5 includes an upper cover plate 51. The upper cover plate 51 is arranged above the bottom plate 2. The edge of the lower end surface of the upper cover plate 51 is connected to the bottom plate 2 through a surrounding side plate 52. The lower end surface of the upper cover plate 51, the surrounding side plate, and the upper end surface of the bottom plate 2 jointly enclose the lightweight support structure. The inside of the hollow floor slab core mold is not filled with concrete to achieve the purpose of saving concrete and reducing weight.

[0037] The upper cover plate 51 is a concrete plate, and a steel mesh 55 is embedded in the concrete plate. The steel bars in the steel mesh 55 have an elongated section that exceeds the upper cover plate 51. A closed lightweight support structure is provided below the upper cover plate 5. When pouring cement around the upper cover plate, the elongated section can better penetrate into the concrete, thereby improving the connection stability between the upper cover plate 51 and the surrounding poured concrete.

[0038] The lower end surface of the upper cover plate 51 and the upper end surface of the bottom plate 2 are respectively provided with positioning bosses or positioning grooves for connecting with the surrounding side plates 52, and the surrounding side plates 52 are calcium silicate boards or cement fiber boards. The edge position of the lower end surface of the upper cover plate 51 is provided with a first positioning boss 53 along its circumference, and the inner side of the upper end portion of the surrounding side plate 52 is connected to the lower end surface of the upper cover plate 51 through the first positioning boss 53, and the upper inner side of the surrounding side plate 52 is tightly attached to the outer wall of the first positioning boss 53; the edge position of the lower end surface of the upper cover plate 51 can also be provided with a first positioning groove along its circumference, and the corresponding position of the upper end surface of the bottom plate 2 is also provided with a second positioning boss 10 or a second positioning groove matching the surrounding side plate 52. Reference Figure 3 , this embodiment adopts the positioning boss method.

[0039] A reinforcing member is also provided inside the bottom plate 2 , and the reinforcing member is one or any combination of steel wire mesh, steel fiber, and carbon fiber to improve the strength of the bottom plate 2 .

[0040] The upper end of the first wave rib 31 is arranged at the inner side, outer side or lower side of the first full-length rib 11 ; the upper end of the second wave rib 32 is arranged at the inner side, outer side or lower side of the second full-length rib 12 .

[0041] A plurality of the one-way steel bar trusses are provided, and the plurality of the one-way steel bar trusses are provided in parallel with each other, and the plurality of the one-way steel bar trusses are provided in sequence along the longitudinal direction of the bottom plate 2 .

[0042] A plurality of longitudinal steel wires 7 are passed through the lower ends of the plurality of first wave ribs 31 and second wave ribs 32, and a plurality of transverse steel wires 8 are also provided on the upper parts of the plurality of longitudinal steel wires. The plurality of longitudinal steel wires and transverse steel wires are staggered to form a steel mesh, and the steel mesh is buried in the bottom plate 2. Both ends of each of the longitudinal steel wires and transverse steel wires penetrate the side of the bottom plate 2 and extend outward for a certain length. The design of the transverse steel wires 8 and the longitudinal steel wires improves the connection stability between the first wave ribs 31 and second wave ribs 32 and the bottom plate 2. The longitudinal steel wires and transverse steel wires extend outward for a certain length, so that when the adjacent bottom plates are distributed in sequence, the adjacent bottom plates are filled with concrete to improve the connection strength and connection stability between the adjacent bottom plates.

[0043] The lower end surface of the bottom plate 2 is further provided with an alkali-resistant fiberglass mesh cloth 9.

[0044] The upper end surface of the bottom plate 2 is further pre-embedded with a fixing block for connecting with the lightweight support structure or the lower end part of the lightweight support structure is cast into the bottom plate 2 to a certain depth.

[0045] One or any combination of an inclination angle and a shear groove are respectively arranged at the edge of the bottom plate 2. When adjacent bottom plates are distributed in sequence, a V-shaped groove can be formed between adjacent inclination angles to facilitate the filling of concrete, and the connection strength and connection stability between adjacent bottom plates are improved.

[0046] The lower end parts of the first corrugated rib 31 and the second corrugated rib 32 are bent inward or outward along the longitudinal direction by a certain angle, and the bent parts are pre-embedded in the bottom plate 2. The connection strength between the first corrugated rib 31, the second corrugated rib 32 and the bottom plate 2 is improved.

[0047] A reinforcing rib 6 is respectively added along the length direction at the lower end parts of the first corrugated rib 31 and the second corrugated rib 32, and the reinforcing rib 6 is pre-embedded in the bottom plate 2. The connection strength between the first corrugated rib 31, the second corrugated rib 32 and the bottom plate 2 is further improved.

[0048] The first corrugated rib 31 and the second corrugated rib 32 can also be formed by connecting a plurality of V-shaped steel bars through a top longitudinal bar.

[0049] The bottom plate 2 is one of calcium silicate board, concrete board, cement mortar board and cement fiber board.

[0050] Embodiment 3

[0051] A one-way dense-ribbed steel bar truss concrete composite non-disassembly formwork for a hollow floor, comprising a one-way steel bar truss and a bottom plate 2 arranged in a transverse direction, wherein the one-way steel bar truss is located above the bottom plate 2, and the one-way steel bar truss comprises an upper through-length bar 1, wherein the upper through-length bar 1 is connected to the upper end of the bottom plate 2 through a wave bar 3; the upper through-length bar 1 comprises a first through-length bar 11 and a second through-length bar 12, wherein the first through-length bar 11 and the second through-length bar 12 are located on the same horizontal plane and are arranged parallel to each other, and the first through-length bar 11 and the second through-length bar 12 are connected through a stirrup 4; the wave bar comprises a first wave bar 31 and a second wave bar 32, wherein the upper end of the first wave bar 31 is arranged on the first through-length bar 1 along the length direction of the upper through-length bar 1 On the long reinforcement 11, the lower end of the first wave reinforcement 31 is connected to the base plate 2, the upper end of the second wave reinforcement 32 is arranged on the second full-length reinforcement 12 along the length direction of the upper full-length reinforcement 1, and the lower end of the second wave reinforcement 32 is connected to the base plate 2; a plurality of cover plates 5 are also arranged above the base plate 2, and a closed lightweight support structure is also provided between each of the cover plates 5 and the base plate 2, and the lightweight support structure is a hollow floor core mold; the inner two ends of the upper end of the stirrup 4 are respectively connected to the outer sides of the first full-length reinforcement 11 and the second full-length reinforcement 12, and a plurality of stirrups 4 are arranged, and the plurality of stirrups 4 are arranged in sequence along the length direction of the upper full-length reinforcement 1, and the lower inner end surface of the stirrup 4 is not lower than the upper end surface of the base plate 2.

[0052] The difference from Example 1 is that the light support structure can also be replaced by a foam block, a plastic box mold, or a wire mesh box. The foam block, plastic box mold, or wire mesh box is arranged between the cover plate 5 and the bottom plate 2 to replace the light support structure formed by the lower end surface of the upper cover plate 51 and the inner side surface of the surrounding side plate and the upper end surface of the bottom plate 2.

[0053] Example 3

[0054] On the basis of Example 1, a convex rib is cast on the upper end surface of the bottom plate 2, and the lower end surface of the convex rib is connected to the longitudinal steel wire and the transverse steel wire in the bottom plate. The length direction of the convex rib is arranged perpendicular to the one-way steel bar truss along the longitudinal direction. There are a plurality of convex ribs, and the plurality of convex ribs are evenly arranged at equal intervals along the length direction of the one-way steel bar truss. The height of the convex rib is less than the vertical distance between the upper through-length reinforcement 1 and the bottom plate.

[0055] A concrete sleeve is pre-buried inside the convex rib along its length direction. During the later pouring, the longitudinal steel bars and stirrups at the bottom pass through the sleeve to improve the rigidity of the bottom plate.

[0056] As described above, it is only the preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and inventive concept of the present utility model, making equivalent substitutions or changes should be covered within the protection scope of the present utility model.

Claims

1. A one-way ribbed steel truss concrete composite formwork for hollow floor slabs, characterized in that: The invention comprises a one-way steel bar truss and a bottom plate (2) arranged in a transverse direction, wherein the one-way steel bar truss is located above the bottom plate (2), and the one-way steel bar truss comprises an upper continuous reinforcement (1), wherein the upper continuous reinforcement (1) is connected to the upper end of the bottom plate (2) via a wave reinforcement (3); the upper continuous reinforcement (1) comprises a first continuous reinforcement (11) and a second continuous reinforcement (12), wherein the first continuous reinforcement (11) and the second continuous reinforcement (12) are located on the same horizontal plane and arranged parallel to each other, and the first continuous reinforcement (11) and the second continuous reinforcement (12) are connected via a stirrup (4); the wave reinforcement comprises a first wave reinforcement (31) and a second wave reinforcement (32), wherein the upper end of the first wave reinforcement (31) is arranged on the first continuous reinforcement (11) along the length direction of the upper continuous reinforcement (1), and the first wave reinforcement (31) is arranged on the first continuous reinforcement (11) along the length direction of the upper continuous reinforcement (1), and the first wave reinforcement (31) is arranged on the first continuous reinforcement (11) along the length direction of the upper continuous reinforcement (1). The lower end of the second wave rib (31) is connected to the base plate (2), the upper end of the second wave rib (32) is arranged on the second full-length rib (12) along the length direction of the upper full-length rib (1), and the lower end of the second wave rib (32) is connected to the base plate (2); a plurality of cover plates (5) are also arranged above the base plate (2), and a closed lightweight support structure is also arranged between each of the cover plates (5) and the base plate (2), and the lightweight support structure is a hollow floor core mold; the inner ends of the upper ends of the stirrups (4) are respectively connected to the outer sides of the first full-length rib (11) and the second full-length rib (12), and a plurality of stirrups (4) are arranged, and the plurality of stirrups (4) are arranged in sequence along the length direction of the upper full-length rib (1), and the lower inner end surface of the stirrups (4) is not lower than the upper end surface of the base plate (2).

2. The one-way ribbed steel truss concrete composite non-removable formwork for hollow floor according to claim 1, wherein The cover plate (5) comprises an upper cover plate (51), wherein the upper cover plate (51) is arranged above the base plate (2), the edge of the lower end surface of the upper cover plate (51) is connected to the base plate (2) via a surrounding side plate (52), and the lower end surface of the upper cover plate (51) and the surrounding side plates and the upper end surface of the base plate (2) together form the lightweight support structure.

3. The unidirectional ribbed steel truss concrete composite non-removable formwork for hollow floor according to claim 2, characterized in that The lightweight supporting structure can also be replaced by foam blocks, plastic box molds, and wire mesh boxes.

4. The one-way ribbed steel truss concrete composite non-removable formwork for hollow floor according to claim 2, characterized in that, The upper cover plate (51) is a concrete plate, a steel mesh (55) is pre-buried inside the concrete plate, and the steel bars in the steel mesh (55) have an extended section that exceeds the upper cover plate (51), and a closed lightweight support structure is provided below the upper cover plate (51).

5. The one-way ribbed steel truss concrete composite non-removable formwork for hollow floor according to claim 2, characterized in that, The lower end surface of the upper cover plate (51) and the upper end surface of the bottom plate (2) are respectively provided with positioning bosses or positioning grooves for connecting with the surrounding side plates (52); the surrounding side plates (52) are calcium silicate plates or cement fiber plates.

6. The one-way ribbed steel truss concrete composite non-removable formwork for hollow floor according to claim 1, characterized in that, A reinforcing member is also provided inside the bottom plate (2), and the reinforcing member is one or any combination of steel mesh, steel fiber, and carbon fiber.

7. The unidirectional ribbed steel truss concrete composite non-removable formwork for hollow floor according to claim 1, characterized in that, The upper end of the first wave rib (31) is arranged at the inner side, outer side or lower side of the first full-length rib (11); the upper end of the second wave rib (32) is arranged at the inner side, outer side or lower side of the second full-length rib (12).

8. The one-way ribbed steel truss concrete composite non-removable formwork for hollow floor according to claim 7, characterized in that, A plurality of the one-way steel bar trusses are provided, the plurality of the one-way steel bar trusses are arranged parallel to each other, and the plurality of the one-way steel bar trusses are arranged in sequence along the longitudinal direction of the bottom plate (2).

9. The one-way ribbed steel truss concrete composite non-removable formwork for hollow floor according to claim 8, characterized in that A plurality of longitudinal steel wires (7) are passed through the lower ends of a plurality of the first wave ribs (31) and the second wave ribs (32), and a plurality of transverse steel wires (8) are also provided on the upper parts of the plurality of the longitudinal steel wires. The plurality of the longitudinal steel wires and the transverse steel wires are interlaced to form a steel mesh, and the steel mesh is buried in the bottom plate (2).

10. The one-way ribbed steel truss concrete composite non-removable formwork for hollow floor according to claim 9, wherein, Both ends of each of the longitudinal steel wire and the transverse steel wire penetrate the side surface of the bottom plate (2) and extend outwards for a certain length.

11. The unidirectional ribbed steel truss concrete composite formwork for hollow floor according to claim 1, characterized in that, The lower end surface of the bottom plate (2) is also provided with an alkali-resistant glass fiber mesh cloth (9).

12. The one-way ribbed steel truss concrete composite non-removable formwork for hollow floor according to claim 3, wherein, The upper end surface of the base plate (2) is also pre-buried with a fixing block for connecting with the lightweight support structure, or the lower end of the lightweight support structure is cast inside the base plate (2) to a certain depth.

13. The one-way ribbed steel truss concrete composite non-removable formwork for hollow floor according to claim 1, characterized in that, The edges of the bottom plate (2) are respectively provided with one or any combination of an inclination angle and a shear groove.

14. The one-way ribbed steel truss concrete composite formwork for hollow floor according to claim 1, characterized in that, The lower ends of the first wave rib (31) and the second wave rib (32) are bent inwardly or outwardly at a certain angle along the longitudinal direction, and the bent portions are pre-buried inside the bottom plate (2).

15. The one-way ribbed steel truss concrete composite non-removable formwork for hollow floor according to claim 14, wherein, A reinforcing rib (6) is respectively provided at the lower end of the first wave rib (31) and the second wave rib (32) along the length direction thereof, and the reinforcing rib (6) is pre-buried inside the bottom plate (2).

16. The one-way ribbed steel truss concrete composite formwork for hollow floor according to claim 15, wherein, The first wave rib (31) and the second wave rib (32) can also be formed by connecting a plurality of V-shaped steel bars via upper continuous bars.

17. The one-way ribbed steel truss concrete composite non-removable formwork for hollow floor according to claim 1, characterized in that, The bottom plate (2) is one of a calcium silicate board, a concrete board, a cement mortar board, and a cement fiber board.

Images