Post-earthquake function-recoverable cross-type column foot joint with additional inclined anti-side BRBs

Abstract

The invention relates to a post-earthquake function-recoverable cross-type column foot joint with additional inclined anti-side BRBs, and belongs to the field of structural engineering. The joint is composed of a square steel column, a cross-type hinge base and replaceable anti-side energy consuming devices on both sides. The joint applies design concepts of damage control, energy consuming component replacement, bending moment amplitude modulation, vertical bearing, horizontal anti-side separation and the like, and combines the advantages of traditional rigid connection columns and traditional hinge columns. With shape memory alloy as a material of a column bottom support base, the joint stress performance is improved, and the service life is prolonged. Through the reasonable design, bending moment amplitude modulation is achieved, and the bending moment on the column is reduced to protect the column against damage; meanwhile, the BRBs undertake main anti-side work to control the damage to the BRBs. The two ends of each BRB are hinged, the energy consuming performance of the BRBs is fully exerted by converting lateral load into axial load applied to the BRBs, and the working efficiency of anti-side energy consuming components is improved. After an earthquake, the functions of the column foot joint can be recovered simply by replacing the BRBs.

Description

technical field [0001] This patent relates to a post-earthquake recoverable function cross-shaped column base node with an additional oblique anti-lateral BRB, which belongs to the technical field of structural engineering. Background technique [0002] Industrialized prefabricated steel structure is an inevitable trend in the development of high-rise steel structure residential buildings in the future, and it is the only way for my country to realize the industrialization of construction. Prefabricated buildings are a major change in construction methods and an important measure to promote structural reforms and new urbanization development. They are fully in line with the connotation of "applicability, efficiency, coordination and development" of green buildings. Building assembly can standardize each component, the factory produces uniform specifications, and bolts are assembled accurately on site to avoid the consumption of building materials caused by construction error...

AI Technical Summary

Problems solved by technology

[0006] The present invention proposes a post-earthquake recoverable cross-shaped column-foot joint with an additional oblique anti-lateral BRB, aiming to solve the disadvantages of the existing prefabricated steel structure system such as large post-seismic damage to the bottom column and difficult post-seismic repairs. , to avoid waste of steel, prolong the service life of the joints, improve economic benefits, and also provide more options for the assembled base column base joints

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