Once variable cross-section cross buckling-restrained bracing member

Abstract

The invention discloses a cross-shaped buckling constraint support component with a primary variable cross-section. The support component comprises a core material part, a support end node and a sleeve part, wherein, the core material part is formed by welded core plates, the support end node part consists of gusset plates which are directly welded with the core plates, and the sleeve part consists of a square or quadrate steel sleeve and an internal filling material; a delaminating material is arranged between the internal filling material of the steel sleeve and the core plates. The invention also discloses a manufacturing method of the improved buckling constraint support component. The buckling constraint support has very good hysteresis characteristic and energy dissipation performance, is a very effective energy dissipation component, can achieve 1 / 80 deformation to satisfy 1 / 50 floor displacement deformation requirement of an architecture under an infrequent earthquake action and accumulates plastic deformation greater than 200 times of yielding displacement; the buckling constraint support has stable hysteresis characteristic and good low-cycle fatigue characteristic, can greatly improve seismic capability of the architecture, greatly reduce cost of the support and lay a foundation for popularization and application.

Description

technical field [0001] The invention belongs to the field of construction, and in particular relates to a buckling constrained support member. Background technique [0002] Buckling-restrained brace, also known as unbonded brace, is a new type of anti-seismic energy-dissipating member with superior performance. It is an energy-dissipating bracing member that can yield under both tension and compression. It improves the performance of traditional bracing under compression. The disadvantage of buckling occurs, which improves the seismic performance of the structure. [0003] Once the buckling-restrained brace was introduced, it was unanimously recognized by structural seismic experts and structural engineers around the world. At present, more than 300 buildings in Japan have adopted buckling restraint braces, and the speed of popularization and application in other developed countries in earthquake zones is very fast. More than 50 buildings that have been built or are under c...

AI Technical Summary

Problems solved by technology

[0004] The core materials of the buckling-constrained support structures used in the United States and Japan are all made of low-yield steel, which requires batches of high-quality low-yield point steel, high technical requirements, Q235 and above carbon steel and low-alloy steel with higher strength, and Q195 steel is not applicable

Images