Installing and fixing structure and construction fixing method of steel-concrete connecting pieces and perforated steel bar

Abstract

The invention provides an installing and fixing structure and a construction fixing method of steel-concrete connecting pieces and a perforated steel bar, wherein the installing and fixing structure comprises a base plate, the steel-concrete connecting pieces, the perforated steel bar and a concrete layer. The steel-concrete connecting pieces with shear resistance function are arranged on the baseplate at intervals, each steel-concrete connecting piece is provided with a through hole, and the through holes of the adjacent steel-concrete connecting pieces are in communication with each other.The perforated steel bar is sequentially arranged on the steel-concrete connecting pieces through the through holes, a positioning and supporting device is arranged on the inner wall of each through hole for supporting the perforated steel bar, and the whole perforated steel bar is arranged in the center of each through hole through each positioning and supporting device. The concrete layer is poured on the entire base plate and covers all the steel-concrete connecting pieces and the perforated steel bar. The installing and fixing structure and the construction fixing method solve the problemof how to accurately and efficiently install and position the perforated steel bar in an opening center of an opening plate connecting piece, and the shear strength, rigidity and fatigue performance of the whole fixing structure are further improved.

Description

technical field [0001] The invention belongs to the technical field of civil engineering, and relates to an installation and fixing structure and construction fixing method of a steel-concrete connector and a perforated steel bar. Background technique [0002] In recent years, steel-concrete composite structures have been widely used in the construction of civil structures because they can give full play to the advantages of the two materials. [0003] In composite structures, shear connectors need to be arranged on the steel-concrete joint surface to resist the shear force between the interfaces and reduce relative slippage. During construction, steel-concrete connectors (which may be referred to as perforated plate connectors or PBL shear keys in this application) are formed by opening holes in the steel plate and matching perforated steel bars to form a pin-like structure in the concrete. Load-resistant shear connectors, so as to achieve the technical effect of enhancing...

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the defects existing in the prior art, an installation and fixing structure and construction fixing method of the steel-concrete connector and the perforated steel bar are provided to solve how to accurately and efficiently install and position the perforated steel bar on the opening of the perforated plate connector The central problem, and further improve the shear strength, stiffness and fatigue performance of the entire fixed structure

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