An anti-buckling, energy-dissipating, position-limiting support member of a steel pipe with a baffle inside the inline-shaped retractable variable-section inner core

Abstract

The invention discloses a buckling restrained energy-dissipation limiting bracing component with a baffle-internally-arranged steel pipe and a line-shaped retracting cross-section-variable inner core, and belongs to the technical field of buckling restrained energy-dissipation limiting bracing components. Two rectangular areas formed by the outer restraining steel pipe and the line-shaped steel core are filled with two rectangular hollow steel section concrete-filled steel tubes. The steel core comprises a cross-section-invariable section a, cross-section-reduction sections b and connection sections c from the middle to the two ends, limiting grooves correspond to the cross-section-reduction sections b of the steel core, T-shaped-cross-section baffles are welded to the positions of the limiting grooves, the positions, where the baffles are arranged, of the steel core are partially reduced at the slope angles of 60 degrees, certain gaps are reserved between webs, inserted into the limiting grooves, of the T-shaped-cross-section baffles and the cross-section retracted positions of the line-shaped steel core, and binding-free material layers are arranged in gaps among the outer restraining steel pipe, the line-shaped steel core and the rectangular hollow steel section concrete-filled steel tubes. The longitudinal lengths b of the cross-section partial reduction sections d of the line-shaped steel core should be larger than the longitudinal lengths of the welded T-shaped-cross-section baffles. The buckling restrained energy-dissipation limiting bracing component can be widely applied to energy-dissipation shock absorption and limiting control over a building.

Description

technical field [0001] The invention belongs to the technical field of anti-buckling and energy-dissipating support components, and relates to an anti-seismic energy-dissipating and position-limiting support component of an engineering structure, in particular to a steel core with a variable cross-section in-line shape, and an external restraint steel pipe with a baffle inside. anti-buckling support members. When the anti-buckling support is stressed, the partially reduced steel core first yields and consumes energy. When the deformation reaches a certain level, the steel core is restrained by the built-in baffle of the outer steel tube, which drives the outer steel tube to participate in the later limit work. Background technique [0002] Buckling-restrained brace is also called buckling-restrained brace or BRB (Bucklingrestrained brace). The product technology was first developed in Japan in 1973. A group of Japanese scholars at that time successfully developed the earlies...

AI Technical Summary

Problems solved by technology

[0004] The present invention proposes an anti-buckling energy-dissipating support member with a straight-shaped variable section steel core to solve the problem that the existing anti-buckling support has no displacement control device

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