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CN-224200118-U - Prevent assembled superimposed sheet structure of fracture

CN224200118UCN 224200118 UCN224200118 UCN 224200118UCN-224200118-U

Abstract

The utility model discloses an anti-cracking assembled laminated slab structure, which comprises a prefabricated bottom plate, a post-pouring layer and a buffer layer, wherein the prefabricated bottom plate is of a concrete structure, a bidirectional reinforcing steel bar set is arranged in the prefabricated bottom plate, a distributed reinforcing steel bar set is arranged in the post-pouring layer, one end of the distributed reinforcing steel bar set is preset and connected in the prefabricated bottom plate, the buffer layer is positioned between the prefabricated bottom plate and the post-pouring layer and is made of an elastic material, the buffer layer can absorb stress generated by shrinkage of concrete and temperature change, and the constraint between the prefabricated bottom plate and the post-pouring layer is reduced, so that the possibility of crack generation is reduced.

Inventors

  • LI FEI
  • JIANG CHENGJIE
  • WANG HONGLEI

Assignees

  • 舜元建设(集团)有限公司

Dates

Publication Date
20260505
Application Date
20250314

Claims (8)

  1. 1. An anti-cracking assembled laminated board structure is characterized by comprising The prefabricated bottom plate (100), wherein the prefabricated bottom plate (100) is of a concrete structure, and a bidirectional reinforcing steel bar set is arranged in the prefabricated bottom plate (100); The post-pouring layer (300), wherein a distributed steel bar set is arranged in the post-pouring layer (300), and one end of the distributed steel bar set is preset and connected in the prefabricated bottom plate (100); And a buffer layer (200), wherein the buffer layer (200) is positioned between the prefabricated base plate (100) and the post-pouring layer (300).
  2. 2. The cracking-resistant assembled laminated board structure according to claim 1, wherein the prefabricated base board (100) is formed by casting high-strength concrete, the bidirectional reinforcing steel bar sets comprise first U-shaped steel (110), the first U-shaped steel (110) is provided with a plurality of pieces, and the bottom ends of the first U-shaped steel (110) are clamped with second U-shaped steel (120).
  3. 3. The cracking-preventing assembled laminated board structure according to claim 2, wherein the outer wall of the top of the second U-shaped steel (120) is uniformly welded with a vertical rod (121), the vertical rod (121) is clamped and positioned with the first U-shaped steel (110), and the first U-shaped steel (110) and the second U-shaped steel (120) are vertically and symmetrically distributed in two layers.
  4. 4. A cracking-resistant fabricated laminate structure according to claim 3, wherein the top of the prefabricated base plate (100), the first U-shaped steel (110) and the second U-shaped steel (120) are roughened surfaces.
  5. 5. The cracking-preventing assembled laminated board structure according to claim 1, wherein the distributed reinforcing bar group comprises a first transverse bar (210), the first transverse bar (210) is provided with a plurality of first longitudinal bars (211) welded at the top of the first transverse bar (210), and the first longitudinal bars (211) are provided with a plurality of first longitudinal bars.
  6. 6. The cracking-preventing assembled laminated board structure according to claim 5, wherein the first transverse ribs (210) and the first longitudinal ribs (211) are distributed in a crisscross manner, and the tops of the first longitudinal ribs (211) are uniformly welded with the second vertical rods (212).
  7. 7. The cracking-resistant fabricated laminated board structure according to claim 6, wherein the bottom of the second upright (212) is welded to the first transverse rib (210), the top of the second upright (212) is welded to the second longitudinal rib (213), and the second upright (212) extends into the post-cast layer (300) through the buffer layer (200).
  8. 8. The anti-cracking assembled laminated board structure according to claim 1, wherein an anti-cracking steel wire mesh (310) is arranged in the post-pouring layer (300), and two layers of anti-cracking steel wire mesh (310) are arranged up and down.

Description

Prevent assembled superimposed sheet structure of fracture Technical Field The utility model relates to the technical field of assembled laminated plates, in particular to an anti-cracking assembled laminated plate structure. Background As a floor slab member commonly used in an assembled building, the assembled laminated slab has the advantages of high construction speed, easy quality control and the like. However, in practical engineering applications, the laminated sheet is prone to cracking problems, which not only affect the appearance quality of the structure, but may also reduce the durability and safety of the structure. The main reasons for cracking the laminated slab at present include that in the concrete pouring and curing process, the tensile stress is easily generated inside the laminated slab due to the temperature stress generated by cement hydration heat, shrinkage deformation of the concrete and other factors, when the tensile stress exceeds the tensile strength of the concrete, cracks can occur, in addition, if the connecting parts are improperly processed in the assembling and mounting process of the assembled laminated slab, stress concentration can be caused, the cracks are easily caused, and meanwhile, when the laminated slab bears load, the stress of different parts is uneven, and local cracking can be possibly caused. Some existing anti-cracking measures, such as increasing the reinforcement ratio of the reinforcing steel bars, arranging expansion joints and the like, can relieve cracking problems to a certain extent, but have unsatisfactory effects, and can increase construction cost and difficulty. Disclosure of utility model The utility model aims to provide an anti-cracking assembled laminated slab structure so as to solve the problems in the background technology. In order to achieve the above purpose, the present utility model provides the following technical solutions: an anti-cracking assembled laminated slab structure comprises The prefabricated bottom plate is of a concrete structure, and a bidirectional reinforcing steel bar set is arranged in the prefabricated bottom plate; The post-pouring layer is internally provided with a distributed steel bar set, and one end of the distributed steel bar set is preset and connected inside the prefabricated bottom plate; and the buffer layer is positioned between the prefabricated bottom plate and the post-pouring layer. In a preferred embodiment of the utility model, the prefabricated bottom plate is poured by high-strength concrete, the bidirectional steel bar set comprises a plurality of first U-shaped steels, and the bottom ends of the first U-shaped steels are clamped and provided with second U-shaped steels. In a preferred embodiment of the utility model, the outer wall of the top of the second U-shaped steel is uniformly welded with the vertical rod, the vertical rod is matched with the first U-shaped steel for clamping and positioning, and the first U-shaped steel and the second U-shaped steel are symmetrically distributed in two layers from top to bottom. In a preferred embodiment of the utility model, the top of the prefabricated bottom panel, the first U-shaped steel and the second U-shaped steel are roughened surfaces. In a preferred embodiment of the present utility model, the distributed steel bar set includes a first transverse bar, where a plurality of first transverse bars are provided, a first longitudinal bar is welded on top of the first transverse bar, and a plurality of first longitudinal bars are provided. In a preferred embodiment of the utility model, the first transverse ribs and the first longitudinal ribs are distributed in a crisscross manner, and the tops of the first longitudinal ribs are uniformly welded and connected with the second upright rods. In a preferred embodiment of the present utility model, the bottom of the second upright is welded to the first transverse rib, and the top of the second upright is welded to the second longitudinal rib. In a preferred embodiment of the utility model, an anti-cracking steel wire mesh is arranged inside the post-pouring layer, and two layers of anti-cracking steel wire mesh are arranged below the post-pouring layer. Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. 1. By adopting measures such as a micro-expansion concrete post-pouring layer, an anti-cracking net sheet and a buffer layer, the shrinkage deformation of the concrete is effectively compensated, the stress is dispersed, the expansion of cracks is prevented, and the anti-cracking performance of the laminated slab is remarkably improved. 2. The prefabricated bottom plate and the post-pouring layer are tightly connected together by the connecting steel bars to form an integral structure, so that the bearing capacity and the integrity of