Novel prefabricated assembled type combined joint

Abstract

A novel assembly type combined joint mainly comprises a buckling piece, a steel beam, a steel column, high-strength bolts, an embedded thin-wall steel plate, embedded parts and a butt weld. Firstly, the steel beam and the steel column are connected through the buckling piece and the high-strength bolts, the rotation capacity of the combined joint is improved, thus, the pressure arch effect can be better formed though a structure under the action of impact loads, the catenary action can be achieved better, and the shock resistance and the progressive collapse of the structure are improved. Secondly, the steel beam and the prefabricated concrete slab are connected through shearing bolts embedded in the midspan of the prefabricated slab, and the shearing resistance of the joint is improved. Thirdly, the embedded parts embedded in the two ends of the slab can be connected through the butt weld, the two adjacent slabs are connected so that the hogging moment of a support part of the structure can be resisted, and the integrity of the structure is improved. According to the assembly type combined joint, industrialized production is achieved, on-site fast assembly is achieved, the effect that concrete is poured on site is avoided, the construction efficiency is improved, and the environment pollution is reduced.

Description

technical field [0001] The invention belongs to the technical field of engineering structures, and in particular relates to a novel prefabricated assembly type combined node. Background technique [0002] Steel and concrete composite joints have the advantages of high bearing capacity, high rigidity and superior seismic performance, so they are widely used in prefabricated structures. At present, most of the composite structures adopt all-welded rigid connections, which not only have slow construction speed, high workload, serious environmental pollution, and difficult control of weld quality, but also have poor rotation capacity and hysteresis performance, low ductility, and poor earthquake resistance. The semi-rigid composite joints connected by end plate bolts have better rotation capacity and hysteresis performance, and can exhibit better mechanical properties under the action of ground vibration or impact load, and can effectively exert the compression arch effect of co...

AI Technical Summary

Problems solved by technology

In addition, when the concrete slabs in the combined node structure system are constructed, they are usually poured on site, which not only pollutes the environment, but also slows down the construction efficiency, and the construction is difficult and the design is complicated.

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