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Fully dry-connected precast concrete slab, floor and its seismic performance improvement method

A prefabricated concrete slab, fully dry technology, applied in the direction of earthquake resistance, floor slabs, building materials, etc., can solve the problems of large season and climate influence, long construction period, high resource consumption, etc., and achieve high bearing capacity and good mechanical performance , the effect of high bending resistance

Inactive Publication Date: 2017-07-14
HENAN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the need for post-cast concrete during construction, there are a lot of wet work and on-site work, which requires formwork and support, complex work, long construction period, strong influence by seasons and climate, high resource consumption, and great impact on the environment

Method used

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  • Fully dry-connected precast concrete slab, floor and its seismic performance improvement method
  • Fully dry-connected precast concrete slab, floor and its seismic performance improvement method
  • Fully dry-connected precast concrete slab, floor and its seismic performance improvement method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A fully dry-connected precast concrete slab, comprising a precast concrete slab 1 with tongue-and-groove forms on both sides, a row of precast slab top embedded parts 2 are pre-embedded on both sides of the top of the precast concrete slab 1, and the precast concrete slab 1 The bottom of the slab is provided with a group of slab bottom embedded parts 3, and slab end connectors 5 are respectively embedded at both ends of the precast concrete slab 1; The top anchor bar is connected with the top anchor bar, and the top anchor bar is pre-embedded in the precast concrete slab 1, and the slab top anchor plate is exposed on the side of the precast concrete slab; The longitudinal slab bottom steel bar 36 located on both sides of the bottom of the precast concrete slab 1 is connected with a pre-embedded metal plate on the longitudinal slab bottom steel bar 36, and the pre-embedded metal plate on the bottom side of the precast concrete slab 1 and the precast concrete slab The pre...

Embodiment 2

[0026] A floor constructed from the fully dry-connected precast concrete slabs, including a floor slab spliced ​​by fully dry-connected precast concrete slabs, beams are connected around the floor, and the beams are respectively connected to the fully dry-connected precast concrete The two ends of the slab and the outer full-dry connection are connected to the precast concrete slabs, and the corresponding slab top embedded parts 2 in the adjacent fully dry-connected precast concrete slabs are connected to each other and the corresponding slab top embedded parts 2 The top anchor plate is welded and connected, and the corresponding pre-embedded metal plate in the slab bottom embedded part 3 corresponding to the position in the adjacent fully dry-connected precast concrete slab is provided with a slab bottom metal connecting plate 35. The middle part of the bottom metal connection plate 35 is provided with a through hole, and the bottom metal connection plate 35 is respectively we...

Embodiment 3

[0028]A method for improving the anti-seismic performance of a floor. First, the floor slab formed by splicing the fully dry-connected precast concrete slabs is connected to the surrounding beams. Secondly, the positions of the adjacent fully dry-connected precast concrete slabs are corresponding The top anchor plate of the slab top embedded part 2 is fully welded and welded, and then the metal plate connected by the node is adjusted by welding the slab bottom embedded part 3 corresponding to the position in the adjacent fully dry-connected precast concrete slab The size of the opening and the length of the weld make the deformation capacity of the embedded part at the bottom of the plate close to that of the embedded part at the top. In this embodiment, the welding connection of the embedded parts 3 at the bottom of the slab adopts the metal connection of the embedded metal plate covering the bottom of the slab among the two embedded parts at the bottom of the slab correspondi...

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Abstract

A fully dry connection prefabricated concrete slab, a floor and a method for improving its seismic performance. The concrete slab includes a prefabricated concrete slab, with pre-embedded slab top embedded parts on both sides of the top, slab bottom embedded parts at the bottom, and slab top embedded parts including the slab top anchor plate, which is connected to the exposed slab top anchor bar; The slab bottom embedded parts include horizontal slab bottom reinforcement, on which the embedded metal plate is connected, and longitudinal slab bottom reinforcement is arranged between the embedded metal plates, and the metal plate is exposed on the slab bottom surface of the precast concrete slab. The floor cover includes a floor slab formed by splicing fully dry-connected prefabricated concrete slabs, and beams are connected around the floor slab. The method of improving the seismic performance is to splice the floor slabs formed by splicing fully dry-connected precast concrete slabs, and adjust the deformation capacity of the joint connections by welding the embedded parts at the bottom of the slabs corresponding to the positions in the adjacent fully dry-connected precast concrete slabs , so that the deformation capacity of the embedded parts at the bottom of the board is greater than that of the embedded parts at the top of the board.

Description

technical field [0001] The invention relates to the field of prefabricated assembled buildings and construction thereof, in particular to a fully dry-connected prefabricated concrete slab, a floor and a method for improving its anti-seismic performance. Background technique [0002] At present, prefabricated floor slabs in the construction field mainly include: prefabricated perforated panels, grooved panels and prefabricated laminated panels, etc. Traditional prefabricated perforated panels and grooved panels have a relatively narrow range of use due to stress and connection. The prefabricated laminated slab floor is the most researched and applied floor form in the past 20 years. Composite floors can be roughly divided into two categories: thin-slab laminated floors and thick-slab laminated floors. Lamination of thin slabs is assembling an integral floor. In this type of floor, the prefabricated slab is a precast concrete thin slab, which is poured into a whole with the c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04C2/06E04C2/30E04B5/02E04B1/98
Inventor 庞瑞陈桂香倪红梅胡晓娜韩阳周蓝琨程健刘瑞
Owner HENAN UNIVERSITY OF TECHNOLOGY