A cross-shaped retractable cross-section steel core anti-buckling energy-dissipating support member with internal baffles

Abstract

The invention discloses a bending-prevention limiting energy-dissipation supporting component with a steel pipe with baffles inside and a cross-shaped inward contracting type variable-section steel core, and belongs to the technical field of bending-prevention limiting energy-dissipation supporting components. The cross-shaped steel core sequentially includes a non-variable-section section a, section-decreasing sections b and a connecting section c from the two ends to the middle, wherein the non-variable-section section a is located between the two section-decreasing sections b, the section-decreasing sections b are near the two ends of the external limiting steel pipe respectively, limiting grooves correspond to the section-decreasing sections b of the cross-shaped steel core, a T-shaped-section baffle is welded to each limiting groove, a wing edge plate of each T-shaped-section baffle is welded to the outer surface of the outer limiting steel pipe, a web plate is vertically inserted into each limiting groove, an interval is reserved between each web plate with and each section-decreasing section b of the cross-shaped steel core, the two ends of each section-decreasing section b of the cross-shaped steel core contracts inwards at the rope angle of 60 degrees, the end of the web plate of each T-shaped-section baffle also contracts inwards at the rope angle of 60 degrees and is parallel with the ends of the section-decreasing sections b of the steel core. The bending-prevention limiting energy-dissipation supporting component with the steel pipe with the baffles inside and the cross-shaped inward contracting type variable-section inner core can be widely applied to energy dissipation, seismic mitigation and limiting control of a building.

Description

technical field [0001] The invention belongs to the technical field of anti-buckling energy-dissipating support members, and relates to an engineering structure anti-seismic energy-dissipating and position-limiting support member, in particular to a cross-shaped steel core with variable cross-section and a baffle plate inside. buckling-resistant energy-dissipating 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 (Buckling restrained brace). The product technology was first developed in Japan in 1973. A group of Japanese scholars at that time successfully developed the earliest wall-type buckling-resist...

AI Technical Summary

Problems solved by technology

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

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