Longitudinal non-shear open-hole steel plate pull-out connector and its construction method

Abstract

The invention provides a longitudinal shear nonresistant perforated steel plate anti-pulling connecting piece and a construction method thereof, relates to a connecting piece applied to a bridge structure and belongs to the technical field of bridge structures. The connecting piece is used for connecting a steel beam and a concrete plate and comprises a steel plate provided with long circular holes and penetrating steel bars. The portions, on the two sides of the penetrating steel bars, of the long circular holes are filled with elastic materials. The connecting piece steel plate is welded to an upper flange plate of the steel beam. The connecting piece is adopted in a hogging moment area of a steel-concrete continuous composite beam bridge, tensible stress of the concrete plate in the hogging moment area can be effectively decreased, the longitudinal prestress leading-in degree of the concrete plate is improved, long-term performance and durability of the concrete plate are improved, and meanwhile, the connecting piece has a reliable anti-pulling capability and can resist the lifting effect of the concrete plate relative to the steel beam. According to the connecting piece, materials are convenient to take, and the connecting piece is simple in structure, rapid in construction and rational in stress and has good technical and economic benefits.

Description

technical field [0001] The invention relates to the technical field of bridge structures, in particular to a longitudinal non-shear opening steel plate pull-out connector and a construction method thereof. Background technique [0002] like figure 1 Shown is a steel-concrete continuous composite girder bridge, in which the steel-concrete composite girder is composed of a steel beam and a concrete slab, and the two are usually connected by stud connectors 6, as shown in figure 2 shown. The main functions of the stud connector 6 include: [0003] (1) Shear resistance: Bear the longitudinal shear force of the interface between the steel beam and the concrete slab, and limit the free sliding of the interface between the two, so as to ensure that the steel beam and the concrete slab cooperate to deform and work together, give full play to the combined effect, and improve section stiffness and load carrying capacity; [0004] (2) Pull-out resistance: resist the vertical separ...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the technical problem in the prior art that in the negative moment zone of the continuous composite girder bridge, the use of stud connectors will have an adverse effect on the structural force, the invention provides a longitudinal non-shear resistant perforated steel plate pullout connection Components and their construction methods, the connectors can effectively reduce the tensile stress of the concrete slab in the negative moment area, improve the longitudinal prestressing efficiency of the concrete slab, improve the long-term performance and durability of the concrete slab, and at the same time have an anti-pull effect to resist the concrete slab The vertical separation and lifting function, the structure is simple, the construction is convenient, and the economic performance is better

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