Bidirectional laminated slab dense splicing strong seam construction process and structure

A technology of laminated boards and dense joints, which is applied in the direction of building structures, floor slabs, building components, etc., can solve problems such as tear damage, weak laminated surfaces, disengagement, etc., and achieve the effect of enhancing integrity and preventing tear damage

Pending Publication Date: 2021-06-08
重庆中科建筑科技(集团)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with this method is that the natural rough surface is used to connect the prefabricated slab and the cast-in-place concrete. If the bonding force of the new and old concrete is not enough, it will be separated along the superimposed surface, and tear damage will occur.
And because the anchorage strength of the additional reinforcement is low

Method used

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  • Bidirectional laminated slab dense splicing strong seam construction process and structure
  • Bidirectional laminated slab dense splicing strong seam construction process and structure
  • Bidirectional laminated slab dense splicing strong seam construction process and structure

Examples

Experimental program
Comparison scheme
Effect test

Example

[0039] First embodiment:

[0040] A two-way laminated plate with a structural process, step (1) first lay the bottom plate connecting ribs, laying the bottom plate steel bar, is laid in the longitudinal direction, the bottom plate steel bar is connected to the bottom plate and the floor is combined into a bottom plate steel network, the bottom plate steel network The pavement is built into the prefabricated board template; both ends of the bottom plate steel bars are bent upwards and extends out of the prefabricated plate surface after pouring, which can reach the current casting layer to enhance the integrity and safety of the structure, effectively prevent the seam The torn destruction of a larger crack is produced along the stacking surface; finally put the truss steel and the hang network on the bottom plate.

[0041] Step (2) Pour the prefabricated plate and wet the prefabricated plate; after the maintenance, the prefabricated plate is symmetrically spliced, and the seam form...

Example

[0048] Second Embodiment:

[0049] A two-way laminated plate with a structural process, step (1) first lay the bottom plate connecting ribs, laying the bottom plate steel bar, is laid in the longitudinal direction, the bottom plate steel bar is connected to the bottom plate and the floor is combined into a bottom plate steel network, the bottom plate steel network The pavement is built into the prefabricated board template; both ends of the bottom plate steel bars are bent upwards and extends out of the prefabricated plate surface after pouring, which can reach the current casting layer to enhance the integrity and safety of the structure, effectively prevent the seam The torn destruction of a larger crack is produced along the stacking surface; finally put the truss steel and the hang network on the bottom plate.

[0050] Step (2) Pour the prefabricated plate and wet the prefabricated plate; after the maintenance, the prefabricated plate is symmetrically spliced, and the seam for...

Example

[0056] Third Embodiment:

[0057] Such as image 3 As shown, a two-way laminated plate is derived from a structural, including the prefabricated plate 1 and the present-casting layer 2, and the preform 1 mirror symmetry is spliced, and the casting layer 2 is poured on the prefabricated plate 1. The prefabricated plate 1 is provided with a longitudinal floor steel bar 5 and a laterally laid floor connecting band 6, and the bottom plate reinforcing bar 5 and the bottom plate connecting band 6 are fixed into a bottom plate steel network. Truss Rebar 4 is laid laterally on the bottom plate. The bottom plate reinforcing bib 5 is adjacent to the end of the prefabricated plate 1 towards 90 °, and the horizontal segment is a bottom plate force steel bar 5-1, and the vertical segment is a bottom plate fixed steel bar 5-2. The bottom plate fixing the reinforcing bar 5-2 passes through the prefabricated plate 1 and extends into the current casting layer 2, not only keeps the preform plate 1 i...

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PUM

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Abstract

The invention discloses a bidirectional laminated slab dense splicing strong seam structure. The bidirectional laminated slab dense splicing strong seam structure comprises a prefabricated slab and a cast-in-place layer, wherein bottom plate steel bars and bottom plate connecting bars are arranged in the prefabricated slab, the bottom plate steel bars comprise bottom plate load-bearing steel bars and bottom plate fixing steel bars, the bottom plate fixing steel bars are close to a splicing seam of the prefabricated slab, bent upwards and extend out of the surface of the prefabricated slab, additional steel bars and top plate compression steel bars are longitudinally laid in the cast-in-place layer, every two adjacent additional steel bars are connected to one top plate compression steel bar through a connecting web bar, the additional steel bars are perpendicular to the abutted seam, additional fixing steel bars are further arranged at the two ends of the additional steel bars and arranged in the vertical direction, and top plate connecting ribs and the top plate compression steel bars are laid in the transverse direction and in an overlapped mode. The bidirectional laminated slab dense splicing strong seam construction structure is high in integrality and bearing capacity, and the stability of the laminated slab near the abutted seam is high.

Description

technical field [0001] The invention relates to a splicing process and structure of concrete laminated slabs, in particular to a construction process and structure of two-way laminated slabs close-jointed strong joints. Background technique [0002] As a good combination of prefabricated slabs and cast-in-place slabs, concrete composite slabs have been widely used in engineering practice. However, due to the existence of joints between prefabricated slabs, the development of concrete laminated slabs is restricted. In the existing split-joint laminated slabs, due to insufficient bonding force between the prefabricated slab and the cast-in-place concrete on the laminated surface, it is easy to tear and fail along the laminated surface at the joint. This sudden brittle failure has a serious impact on the stability of the structure. [0003] Article 6.6.5 of the "Technical Regulations for Prefabricated Concrete Structures" (JGJ1-2014) provides a schematic diagram of the struct...

Claims

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Application Information

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IPC IPC(8): E04B5/17E04G21/00
CPCE04B5/17E04G21/00
Inventor 蒋林杨波尹犟席菲菲程振宇钟东旭魏国俊潘延辉李春文
Owner 重庆中科建筑科技(集团)有限公司
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