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《Journal of Southeast University(Natural Science Edition)》 2016-01
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Experimental study on new open-pore two-stage energy dissipation device with low yield point steel

Fan Shenggang;Ding Zhixia;Shu Ganping;Shang Chunfang;Liu Meijing;Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education,Southeast University;School of Civil Engineering ,Southeast University;Department of Civil Engineering ,Southeast University Chengxian College;  
In order to implement two-stage energy dissipation,a newopen-pore energy dissipation device was designed based on Q235 steel and lowyield point steel. Two kinds of steel consumption sheets with different yield displacements were fabricated by different materials and parabola opening ways,and were assembled into an overall energy dissipation device to achieve the two-stage control target of energy dissipation. The monotonic loading tests were carried out on these two energy dissipation plates to investigate the yield mechanism considering different parameter settings. The loaddisplacement curves,yield displacements and yield loads of single-plate specimens were obtained.The lowreversed cyclic loading tests were conducted on the energy dissipation device,and the two-stage energy dissipation mechanism and the failure mode were revealed. The hysteretic curves,skeleton curves,equivalent viscous damping ratio,and equivalent stiffness degradation curves of the energy dissipation device were obtained. The experimental results showthat the newtwo-stage energy dissipation device has full hysteretic curves,stable energy dissipation performance,obvious energy dissipation in stages.
【Fund】: “十二五”国家科技支撑计划资助项目(2012BAJ13B014)
【CateGory Index】: TU317;TU391
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