Composite bolting shear key structure

Abstract

The invention discloses a composite bolting shear key structure which comprises a prefabricated concrete bearing plate, a steel transition piece and a steel supporting piece, the steel transition piece is pre-buried in the prefabricated concrete bearing plate, the steel transition piece and the prefabricated concrete bearing plate form a whole, and the first end of the steel transition piece protrudes out of the prefabricated concrete bearing plate and is used for being in bolting connection with the steel supporting piece; the shear-resistant assembly is pre-buried in the prefabricated concrete bearing plate and comprises a plurality of studs and reinforcing steel ribs, and the studs are connected to the steel transition piece at intervals in the length direction; the steel transition pieces arranged on the two sides of the central axis of the prefabricated concrete bearing plate in the transverse direction form a connecting piece set, the two transverse ends of the reinforcing steel ribs are connected with the two steel transition pieces in the connecting piece set respectively, the multiple reinforcing steel ribs are arranged at intervals in the length direction, and the reinforcing steel ribs are connected with the two steel transition pieces in the connecting piece set. The post-cast concrete slotted hole (with concrete) can be avoided, the assembly degree of steel and concrete is improved, construction can be facilitated, the problem that the connection operation condition between the steel and the concrete is poor in construction is solved, and the shear resistance of the structure is improved.

Description

technical field [0001] The invention relates to the fields of building structures and bridge engineering, in particular to a composite bolted shear key structure. Background technique [0002] In order to speed up construction, save construction costs, improve structural quality, reduce working time at heights, and improve construction safety, prefabricated steel-concrete composite beams based on rapid construction are increasingly widely used, and many prefabricated shear beams have also emerged. The key, which can connect the steel beam and the prefabricated bridge deck into a whole through post-assembly, is the key force-bearing structure for the rapid construction of the combined structure. At present, there are still the following problems in the assembled shear key: [0003] Problem 1: Existing shear keys are divided into two categories. One is flexible shear keys, which often require arranging nail groups with relatively close spacing to meet the requirements of shea...

AI Technical Summary

Problems solved by technology

[0007] In view of this, the purpose of the present invention is to overcome the defects in the prior art and provide a composite bolted shear key structure, which can avoid post-cast concrete slot (band) concrete, improve the degree of assembly, and facilitate construction. Improve the problem of poor connection operation conditions during construction and improve the shear performance of the structure

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