Double-yield-point buckling restrained brace

Abstract

The invention discloses a double-yield-point buckling restrained brace. The brace comprises a body, the body comprises a core unit, an outer restraining unit, an unbonded sliding mechanism unit and connecting units at the two ends, the core unit comprises a staged yield composition plate, the staged yield composition plate comprises a first yield steel plate and a second yield steel plate, and the outer restraining unit comprises an outer steel pipe and filler. The unbonded sliding mechanism unit is arranged between the core unit and the filler, and the connecting units are fixedly connected to the outer sides of a first connecting section and a second connecting section of a connecting area. According to the buckling restrained brace with the two yield sections, the buckling restrained brace has two yield points through construction, yield energy consumption can be achieved under small earthquakes, along with increase of earthquake action and increase of structural deformation, when medium earthquakes or large earthquakes are reached, the second yield section enters a working state, and the requirement of structural anti-seismic performance design is well met.

Description

technical field [0001] The invention relates to a structure anti-seismic member, in particular to a buckling constrained brace yielding in stages. Background technique [0002] The buckling-restrained support is composed of the core energy-dissipating section and the outsourcing restraint member. When the core energy-dissipating section bears axial pressure, the outsourcing constraining element is used to constrain the lateral deformation of the core energy-dissipating section to prevent the core energy-consuming section from buckling, so that it can Under the action of axial force, the full section yields, and the symmetrical mechanical performance is obtained in the direction of tension and compression. Buckling-restrained bracing has the characteristics of clear shock absorption mechanism, obvious shock absorption effect, safety, reliability, and economical rationality, and can meet the seismic requirements of different structures. Under normal use conditions and small e...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a double yield point buckling restraint support, to solve the problem of the low stiffness ratio of the energy dissipation section of the high yield point of the existing staged yield buckling restraint support The rigidity of the energy-dissipating section at the yield point is large, resulting in a greater impact on the energy consumption of the energy-dissipating section at the low yield point, and it is impossible to truly realize the technical problem of staged yielding

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