Precast modular buckling-restrained brace bolting and welding mixed connection joint

Abstract

The invention discloses a precast modular buckling-restrained brace bolting and welding mixed connection joint, and belongs to the field of energy dissipation and seismic reduction of a building structure. The precast modular buckling-restrained brace bolting and welding mixed connection joint comprises precast steel joint modules, buckling restrained braces, connecting high-strength bolts, fixedhigh-strength bolts and attachment welds. The buckling restrained braces are laid in the diagonal direction of frame structures formed by structural beams and structural columns. The precast steel joint modules comprise first precast steel joint modules, second precast steel joint modules, third precast steel joint modules, and fourth precast steel joint modules. The precast modular buckling-restrained brace bolting and welding mixed connection joint has the advantages that the length of the joint connection is short, the stiffness out of plane is high, the installation and construction are simple, and the post-earthquake replacement is convenient. The length of the traditional bolt connection is greatly reduced by adopting a method of assembling the four precast steel joint modules and supporting connecting sections, at the same time, the length of energy consumption sections can be increased according to the design proportion, and the energy consumption performance of the buckling restrained braces can be improved under the same engineering conditions.

Description

technical field [0001] The invention relates to a prefabricated modular buckling constrained support bolted and welded hybrid connection node, which belongs to the field of energy dissipation and shock absorption of building structures. Background technique [0002] Buckling-restrained bracing combines the functions of traditional bracing and metal energy-dissipating damper. It has the advantages of good tension-compression symmetry and stable hysteretic performance. It can increase the lateral stiffness of the structure in frequent earthquakes, and use the inner core in rare earthquakes Plastic deformation energy dissipation after yielding. The concept of buckling-constrained brace was first proposed by Japanese scholar Yoshino et al. in 1971, and has been widely used in Japan and the United States since then. In recent years, with the construction of high-rise and super high-rise buildings in China, more and more researches and applications of buckling-restrained braces h...

AI Technical Summary

Problems solved by technology

[0007] This invention aims to solve the problem of traditional bolted connection and welded connection to the buckling-constrained support of the connection section length, node out-of-plane stability, energy dissipation performance, post-earthquake replacement, construction and installation In view of the problems caused by other aspects, a prefabricated modular buckling-restrained bracing bolt-welded hybrid connection node is proposed that reduces the length of the connecting section, increases the out-of-plane stiffness of the node, and makes the replacement and construction installation after the earthquake easier and more convenient.

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