Assembled large-scale buckling-restrained bracing member

Abstract

The invention discloses an assembled large-scale buckling-restrained bracing member, which comprises sub buckling-restrained braces and connection nodes. The sub buckling-restrained braces are dividedinto end sub buckling-resistant braces and middle sub buckling-restrained braces according to the setting position and the cover plate type. The connection nodes are used to connect the sub buckling-restrained braces. The connection sections between the sub buckling-restrained braces are strengthened by splicing angle steel, which ensures effective transmission of the axial force and enables eachsub buckling-restrained brace to yield and dissipate energy. Energy dissipating inner cores are connected by bolts, so that the adverse effects caused by stress concentration, welding residual stressand welding residual deformation caused by welding are avoided, the design strength of the linear inner cores is guaranteed, and the low-cycle fatigue performance is improved. Meanwhile, the assembled large-scale buckling-restrained bracing member can be designed, manufactured and assembled in sections, is convenient to transport, and breaks through the limitation of plate and section steel specifications.

Description

technical field [0001] The invention belongs to the field of civil engineering, and in particular relates to an assembled large-scale anti-buckling support member. Background technique [0002] The traditional anti-seismic methods of structures are mostly to improve their own strength and stiffness, and use the energy dissipation of structural components to dissipate seismic energy. In recent years, the use of non-structural components to dissipate seismic energy has been gradually adopted, and buckling-resistant braces are widely used for their superior seismic performance. A well-designed anti-buckling brace can provide lateral stiffness like ordinary braces to reduce the displacement of the structure under earthquake action, and can dissipate the seismic energy before the structural members yield. Therefore, anti-buckling braces are widely used in existing building reinforcement and new construction. [0003] At present, anti-buckling braces are mostly used in office bu...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide an assembled large-scale buckling-resistant bracing member, which solves the problems of the performance of the large-span super-long buckling-proof bracing in the above-mentioned background technology, including large-span super Stress concentration, welding residual stress and welding residual deformation caused by long-scale anti-buckling bracing welding assembly, weakening of anti-buckling bracing low-cycle fatigue performance and stable bearing capacity under pressure, and failure to guarantee the design yield strength of the inner core, etc.

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