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《Sichuan Building Science》 2013-02
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Hysteretic performance study on buckling-restrained brace

GAO Erxin1,WANG Yonggui1,2(1.School of Mechanics﹠Civil Engineering,China University of Mining﹠Technology,Beijing 100083,China; 2.School of Civil Engineering,Henan Polytechnic University,Jiaozuo 454000,China)  
With hot-rolled steel Q235 in China,four specimens of buckling-restrained brace,with two kinds of cross section shape two kinds of composed method,are designed,manufactured and tested for the steel market in China.To detect the seismic performance and conformation of Buckling-Restrained Brace(BRB),cyclically loading tests are conducted,as well as force-deformation loops,tangent stiffness,equivalent damping ratio.It is proved that the load-deformation loops of BRB is stable,energetic and symmetrical.The equivalent stiffness and damping ratio are unaffected by steel variety and section form.This BRB is a new type of energy dissipation brace,which has a reliable conformation,with high energy dissipation ability and seismic ductility.
【Fund】: 国家自然科学基金(50678013);; 北京市自然科学基金(8062009)
【CateGory Index】: TU391;TU317.1
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