Unidirectional steel bar truss concrete combined non-dismantling formwork for ribbed floor slab

Abstract

The utility model discloses a one-way steel bar truss concrete combined non-dismantling formwork for a ribbed floor slab, 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 rib, a lower full-length rib and a lower full-length rib. And the upper full-length rib is connected with the upper end of the bottom plate through a connecting piece. 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 buckled mode.

Description

Technical Field

[0001] The utility model belongs to the technical field of construction, and particularly relates to a unidirectional steel bar truss concrete combined non - removable formwork for ribbed slabs. Background Technique

[0002] With the rapid development of the construction industry in China, ribbed slabs are 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 buildings on the basis of learning from foreign advanced design and construction experience. Compared with ordinary reinforced concrete structural systems, under the same conditions, it can effectively save a large amount of concrete and steel, improve the space utilization rate, greatly reduce the self - weight of the floor slab, and improve the bearing capacity.

[0003] Most of the existing ribbed slabs are composed of thin plates and transverse and longitudinal ribs with a small spacing. They have novel and beautiful shapes, light self - weight, good seismic performance, and remarkable economic effects. For example, a bidirectional ribbed steel bar truss concrete combined non - removable formwork with the patent number CN220747386U that has been authorized includes a steel bar truss in a grid shape formed by the criss - crossing of horizontal and vertical directions and a bottom plate. The steel bar truss in a grid shape formed by the criss - crossing of horizontal and vertical directions is arranged above the bottom plate. A hollow floor core mold is arranged in the grid of the steel bar truss in a grid shape formed by the criss - crossing of horizontal and vertical directions on the bottom plate. The steel bar truss includes a first upper chord bar, a second upper chord bar, rectangular stirrups, and V - shaped corrugated bars. The first upper chord bar and the second upper chord bar are arranged in parallel side by side. Rectangular stirrups are also arranged on the outer sides of the first upper chord bar and the second upper chord bar. The first upper chord bar and the second upper chord bar are both connected to the V - shaped corrugated bars, and the lower part of the V - shaped corrugated bars is partially buried in the bottom plate.

[0004] Further research finds that ribbed slabs composed of transverse and longitudinal ribs need 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 ribbed slabs composed of transverse and longitudinal ribs enhance the stiffness of the bottom plate, they also indirectly increase the quantity of prefabricated materials and the resulting prefabrication production cost. Therefore, it is necessary to improve it to achieve the purpose of ensuring stiffness while reducing the use cost and production cost. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a unidirectional steel bar truss concrete combined non - removable formwork for ribbed slabs, which reduces the occupied transportation volume by the way of buckling a number of unidirectional steel bar trusses on two bottom plates.

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

[0007] A one-way steel bar truss concrete combined non-disassembly formwork for a ribbed floor, comprising a one-way steel bar truss and a bottom plate arranged in a transverse direction, wherein the one-way steel bar truss is located above the bottom plate, and the one-way steel bar truss comprises an upper through-length bar, wherein the upper through-length bar is connected to the upper end of the bottom plate through a connecting piece; the upper through-length bar comprises a first through-length bar and a second through-length bar, wherein the first through-length bar and the second through-length bar are located on the same horizontal plane and are arranged parallel to each other, and the first through-length bar and the second through-length bar are connected through stirrups; the connecting piece comprises a wave bar, wherein the wave bar comprises a first wave bar and a second wave bar, wherein the upper The end of the stirrup is arranged on the first full-length reinforcement along the length direction of the upper full-length reinforcement, the lower end of the first wave reinforcement is connected to the bottom plate, the upper end of the second wave reinforcement is arranged on the second full-length reinforcement along the length direction of the upper full-length reinforcement, and the lower end of the second wave reinforcement is connected to the bottom plate; a plurality of hollow floor core molds are also arranged on the upper end surface of the bottom plate; the inner ends of the upper ends of the stirrups are respectively connected to the outer sides of the first full-length reinforcement and the second full-length reinforcement, a plurality of stirrups are arranged, and the plurality of stirrups are arranged in sequence along the length direction of the upper full-length reinforcement, and the lower inner end surface of the stirrups is not lower than the upper end surface of the bottom plate.

[0008] Preferably, a reinforcement is further provided inside the base plate, and the reinforcement is one or any combination of steel mesh, steel fiber, and carbon fiber.

[0009] Preferably, the upper end of the first wave rib is arranged at the inner side, outer side or lower side of the first full-length rib; the upper end of the second wave rib is arranged at the inner side, outer side or lower side of the second full-length rib.

[0010] 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.

[0011] Preferably, a plurality of longitudinal steel wires are provided between the lower ends of the first wave ribs and the second wave ribs, a plurality of transverse steel wires are provided between the longitudinal steel wires, and 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.

[0012] 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.

[0013] Preferably, the lower end surface of the bottom plate is also provided with alkali-resistant glass fiber mesh cloth.

[0014] Preferably, a fixing block for connecting with the hollow floor slab core mold is also embedded in the upper end surface of the bottom plate, or the lower end part of the hollow floor slab core mold is poured into the bottom plate to a certain depth, and the hollow floor slab core mold is basin-shaped.

[0015] Preferably, one or any combination of an inclination angle and a shear groove are respectively arranged at the edge of the bottom plate.

[0016] Preferably, the lower end parts of the first corrugated rib and the second corrugated rib are bent inward or outward along the longitudinal direction by a certain angle, and the bent parts are embedded in the bottom plate.

[0017] Preferably, a reinforcing rib is respectively added along the length direction at the lower end parts of the first corrugated rib and the second corrugated rib, and the reinforcing rib is embedded in the bottom plate.

[0018] Preferably, the first corrugated rib and the second corrugated rib can also be formed by connecting a plurality of V-shaped steel bars through a longitudinally continuous steel bar.

[0019] Preferably, the bottom plate is one of calcium silicate board, concrete board, cement mortar board, and cement fiber board.

[0020] Compared with the prior art, the present utility model has the following beneficial effects:

[0021] For the unidirectional steel bar truss concrete combined demountable formwork for ribbed floor slab of the present utility model, by arranging a unidirectional steel bar truss above the bottom plate, during transportation, for the bottom plate located below, its unidirectional steel bar truss is arranged upward, and for the bottom plate located above, its unidirectional steel bar truss is arranged downward, and two adjacent unidirectional steel bar trusses can be transported in a buckled manner to achieve the purpose of reducing the occupied transportation volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

[0023] Figure 1 It is a structural schematic diagram of the present utility model.

[0024] Figure 2 It is a longitudinal upward corrugated rib structural schematic diagram of the present utility model.

[0025] Figure 3 It is a transverse stirrup structural schematic diagram of the present utility model.

[0026] Figure 4 For the present utility modelFigure 3 Partial enlarged schematic diagram at position A. Specific implementation manners

[0027] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are only a part rather than all of the 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 making creative efforts fall within the scope of protection of the present utility model.

[0028] 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 claimed present utility model, but merely represents 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 making creative efforts fall within the scope of protection of the present utility model.

[0029] Embodiment 1

[0030] Please refer to Figures 1-4As shown, a one-way steel bar truss concrete combined non-disassembly formwork for a ribbed floor slab 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 through-length bar 1, wherein the upper through-length bar 1 is connected to the upper end of the bottom plate 2 through a connector 4; 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 6; the connector 4 comprises a wave bar, wherein the wave bar comprises a first wave bar 41 and a second wave bar 42, wherein the first wave bar 41 The upper end of the first wave rib 41 is arranged on the first through-length rib 11 along the length direction of the upper through-length rib 1, the lower end of the first wave rib 41 is connected to the bottom plate 2, the upper end of the second wave rib 42 is arranged on the second through-length rib 12 along the length direction of the upper through-length rib 1, and the lower end of the second wave rib 42 is connected to the bottom plate 2; the upper end surface of the bottom plate 2 is also provided with a plurality of hollow floor core molds 5; the inner ends of the upper ends of the stirrups 6 are respectively connected to the outer sides of the first through-length rib 11 and the second through-length rib 12, and the stirrups 6 are provided in plurality, and the plurality of stirrups 6 are arranged in sequence along the length direction of the upper through-length rib 1, and the lower inner end surface of the stirrups 6 is not lower than the upper end surface of the bottom plate 2. By arranging a one-way steel bar truss above the bottom plate, during transportation, the one-way steel bar truss of the bottom plate located below is arranged upward, and the one-way steel bar truss of the bottom plate located above is arranged downward, and two adjacent one-way steel bar trusses can be interlocked to achieve the purpose of reducing the occupied transportation area. The hollow floor core molds 5 are distributed on the upper end of the base plate 2 in a rectangular array.

[0031] A reinforcement is also provided inside the bottom plate 2, and the reinforcement is one or any combination of steel mesh, steel fiber, and carbon fiber.

[0032] The upper end of the first wave rib 41 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 42 is arranged at the inner side, outer side or lower side of the second full-length rib 12 .

[0033] 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 .

[0034] A plurality of longitudinal steel wires 7 are provided between the lower ends of the plurality of first wave ribs 41 and the second wave ribs 42, and a plurality of transverse steel wires 8 are provided between 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. The longitudinal and transverse connection strength between the unidirectional steel bar truss and the bottom plate is enhanced.

[0035] Both ends of each longitudinal steel wire and transverse steel wire penetrate through the side surface of the bottom plate 2 and extend outward for a certain length. The fact that the longitudinal steel wire and the transverse steel wire extend outward for a certain length enables the connection between multiple bottom plates through concrete after laying.

[0036] An alkali-resistant fiberglass mesh cloth 9 is further arranged on the lower end surface of the bottom plate 2.

[0037] On the upper end surface of the bottom plate 2, fixing blocks for connecting with the hollow floor slab core mold 5 are pre-embedded or the lower end part of the hollow floor slab core mold 5 is cast into the bottom plate 2 to a certain depth, and the hollow floor slab core mold 5 is in a basin shape.

[0038] At the edge of the bottom plate 2, one or any combination of an inclination angle and a shear groove is respectively arranged. The inclination angle or shear groove between multiple bottom plates after laying can form a placement groove for accommodating concrete, reducing the sliding of concrete.

[0039] The lower end parts of the first corrugated rib 41 and the second corrugated rib 42 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.

[0040] A reinforcing rib 10 is respectively added along the length direction at the lower end parts of the first corrugated rib 41 and the second corrugated rib 42, and the reinforcing rib is pre-embedded in the bottom plate 2.

[0041] The first corrugated rib 41 and the second corrugated rib 42 can also be formed by connecting several V-shaped steel bars through upper longitudinal bars.

[0042] The bottom plate 2 is one of calcium silicate board, concrete board, cement mortar board, and cement fiber board.

[0043] Embodiment 2

[0044] On the basis of Embodiment 1, a convex rib is further cast on the upper end surface of the bottom plate 2. The lower end surface of the convex rib is connected with the bottom plate. The length direction of the convex rib is perpendicular to the one-way steel bar truss along the longitudinal direction. A plurality of convex ribs are arranged, and the plurality of convex ribs are arranged in sequence along the length direction of the one-way steel bar truss. The height of the convex rib is less than the vertical distance from the upper longitudinal bar 1 to the bottom plate.

[0045] Holes are arranged along the width direction of the convex rib. When binding steel bars later, the bottom of the stirrup passes through these holes.

[0046] 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, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A one-way steel bar truss concrete composite non-removable formwork for ribbed 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 bar (1), wherein the upper continuous bar (1) is connected to the upper end of the bottom plate (2) via a connecting piece (4); the upper continuous bar (1) comprises a first continuous bar (11) and a second continuous bar (12), wherein 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, and the first continuous bar (11) and the second continuous bar (12) are connected via a stirrup (6); the connecting piece (4) comprises a wave bar, wherein the wave bar comprises a first wave bar (41) and a second wave bar (42), wherein the upper end of the first wave bar (41) is connected to the upper continuous bar (1) via a connecting piece (4). The first wave reinforcement (41) is arranged on the first full-length reinforcement (11) in the length direction of the upper full-length reinforcement (1), the lower end of the first wave reinforcement (41) is connected to the bottom plate (2), the upper end of the second wave reinforcement (42) 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 (42) is connected to the bottom plate (2); the upper end surface of the bottom plate (2) is also provided with a plurality of hollow floor core molds (5); the inner ends of the upper ends of the stirrups (6) are respectively connected to the outer sides of the first full-length reinforcement (11) and the second full-length reinforcement (12), a plurality of stirrups (6) are provided, and the plurality of stirrups (6) are arranged in sequence along the length direction of the upper full-length reinforcement (1), and the lower inner end surface of the stirrups (6) is not lower than the upper end surface of the bottom plate (2).

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

3. The one-way steel bar truss concrete composite non-removable formwork for ribbed floor according to claim 1, wherein, The upper end of the first wave rib (41) is arranged at the inner side, outer side or lower side of the first full-length rib (11); and the upper end of the second wave rib (42) is arranged at the inner side, outer side or lower side of the second full-length rib (12).

4. The one-way steel bar truss concrete composite formwork for ribbed floor slab according to claim 3, 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).

5. The unidirectional steel bar truss concrete composite formwork for ribbed floor slab according to claim 4, wherein A plurality of longitudinal steel wires (7) are provided between the lower ends of the plurality of first wave ribs (41) and the second wave ribs (42), and a plurality of transverse steel wires (8) are provided between the plurality of longitudinal steel wires. The plurality of 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).

6. The unidirectional steel bar truss concrete composite non-removable formwork for ribbed floor according to claim 5, characterized in that, Both ends of each of the longitudinal steel wires and the transverse steel wires penetrate the side surface of the bottom plate (2) and extend outwards for a certain length.

7. The unidirectional steel bar truss concrete composite non-removable formwork for ribbed floor according to claim 6, characterized in that, The lower end surface of the bottom plate (2) is also provided with an alkali-resistant glass fiber mesh cloth (9).

8. The unidirectional steel bar truss concrete composite non-removable formwork for ribbed floor according to claim 1, wherein, The upper end surface of the base plate (2) is also pre-buried with a fixing block for connecting to the hollow floor core mold (5), or the lower end of the hollow floor core mold (5) is cast inside the base plate (2) to a certain depth, and the hollow floor core mold (5) is in the shape of a basin.

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

10. The unidirectional steel bar truss concrete composite formwork for ribbed floor slab according to claim 1, characterized in that, The lower ends of the first corrugated rib (41) and the second corrugated rib (42) are bent inward or outward at a certain angle along the longitudinal direction, and the bent parts are embedded inside the bottom plate (2).

11. The unidirectional steel bar truss concrete composite formwork for ribbed slabs according to claim 1, wherein A reinforcing rib (10) is respectively added along the length direction at the lower ends of the first corrugated rib (41) and the second corrugated rib (42), and the reinforcing rib is embedded inside the bottom plate (2).

12. The one-way steel bar truss concrete composite non-removable formwork for ribbed floor according to claim 1, wherein The first corrugated rib (41) and the second corrugated rib (42) can also be formed by connecting a plurality of V-shaped steel bars through upper longitudinal bars.

13. The unidirectional steel bar truss concrete composite formwork for ribbed floor according to claim 1, characterized in that, The bottom plate (2) is one of calcium silicate board, concrete board, cement mortar board, and cement fiber board.

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