Pseudo-static Experiment Study on A New Type Buckling Restrained Brace with Displacement Stopper

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Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (15) : 197-203.

MA Hua1 ZHANG Fang-liang1 LIU Ya-shuang1 LI Zhen-bao1

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Abstract

A new type buckling restrained brace with the displacement stopper(short for LBRB), which is fulfilled by adding the displacement stopper onto a typical buckling restrained brace, is discussed in the paper. The energy-dissipation function of the typical buckling restrained brace is performed under small displacement and the additional stiffness is provided under large displacement by the outer restraint element. Using this work combination, displacement could be limited to a certain level. Pseudo-static experiment of 6 LBRB specimens were carried out to investigate the influence of the distance limited, working section, working length, and the crack to the hysteretic behavior. The results show the excellent ductility and the stable hysteretic performance of the LBRBs with rational constructions. The additional stiffness is evaluated in the experiment.

Key words

buckling restrained brace / energy dissipation / displacement stopper / additional stiffness / hysteretic performance

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MA Hua1 ZHANG Fang-liang1 LIU Ya-shuang1 LI Zhen-bao1. Pseudo-static Experiment Study on A New Type Buckling Restrained Brace with Displacement Stopper[J]. Journal of Vibration and Shock, 2016, 35(15): 197-203

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