不同构造参数对椭圆型耗能器性能的影响分析
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摘要
设计了一种椭圆型耗能器,采用ABAQUS软件对9组不同构造参数的椭圆型耗能器性能进行参数模拟分析,研究椭圆型耗能器的高度、钢板厚度、弧形深度、钢板宽度以及椭圆弧形钢板局部削弱等对椭圆型耗能器性能的影响.研究结果表明:椭圆型耗能器滞回曲线稳定、饱满,塑性耗能能力强;随着椭圆型耗能器高度减小、弧深减小或钢板厚度增加,椭圆型耗能器初始刚度、屈服后刚度和屈服力增大,屈服位移降低;钢板宽度增加,椭圆型耗能器初始刚度、屈服后刚度和屈服力增大,对屈服位移没有影响;局部削弱椭圆型耗能器比不削弱椭圆型耗能器具有更好的耗能效果.
9 different models were designed to research the bearing capacity and the hysteretic performance of the elliptic damper installed in the frame.The constructional parameter of the elliptic damper included the height,the thickness of the steel plate,the depth of the arc,the width of the steel plate and the local weakening forms.All models were carried out numerical simulation with ABAQUS.The analysis results showed that the elliptic damper had stable and full hysteretic curve and posed excellent energy dissipation capacity.As the height and arc depth of the elliptic dampers decrease or the thickness of steel plate increases,the initial stiffness,yield stiffness and yield force of elliptic dampers increase,while the yield displacement lowers down.As the width of steel plate increases,the initial stiffness,yield stiffness and yield force of elliptic dampers increase,while the yield displacement remains unchanged.When the plate of the elliptic damper was weakened partly,the elliptic damper showed better energy dissipation capacity.
9 different models were designed to research the bearing capacity and the hysteretic performance of the elliptic damper installed in the frame.The constructional parameter of the elliptic damper included the height,the thickness of the steel plate,the depth of the arc,the width of the steel plate and the local weakening forms.All models were carried out numerical simulation with ABAQUS.The analysis results showed that the elliptic damper had stable and full hysteretic curve and posed excellent energy dissipation capacity.As the height and arc depth of the elliptic dampers decrease or the thickness of steel plate increases,the initial stiffness,yield stiffness and yield force of elliptic dampers increase,while the yield displacement lowers down.As the width of steel plate increases,the initial stiffness,yield stiffness and yield force of elliptic dampers increase,while the yield displacement remains unchanged.When the plate of the elliptic damper was weakened partly,the elliptic damper showed better energy dissipation capacity.
引文
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[3]TSAI K C,HONG C P,SU Y F.Design of steel triangular plate energy absorbers for seismic resistant construction[J].Earthquake Spectra,1993,9(3):505-528.
[4]WANG Ya-yong,CHEN Qing-xiang.The application of HADAS in the structure seismic reinforcement design of Xi'anChangleyuan merchants square[C].The Research and Development of Disaster Prevention and Mitigation Engineering.Bei-jing:Science Press,2004:245-250.(in Chinese)
[5]ZHOU Yun,LIU Ji.Experimental study on the behaving of circular ring energy dissipater[J].World Earthquake Engineer-ing,1996,12(4):1-7(in Chinese)
[6]ZHOU Yun,LIU Ji.Experimental study on double circular ring mild steel energy dissipater[J].Journal of Earthquake En-gineering and Engineering Vibration,1998,8(2):117-123(in Chinese)
[7]SUN Feng,ZHOU Yun,YU Gong-hua,et al.Experimental study of properties of added stiffness circular ring energy dissi-pator[J].Journal of Earthquake Engineering and Engineering Vibration,1999,19(3):34-38(in Chinese)
[8]KAO Chen-chang,YEH Rui-yao.A study on diagonal bracings with steel-plate energy dissipators[J].Journal of the Chi-nese Institute of Civil and Hydraulic Engineering,1995,7(1):55-62.(in Chinese)
[9]SHERVIN M,SAMAN B.Pipe damper,Part I:Experimental and analytical study[J].Journal of Constructional Steel Re-search,2010,66:1088-1095.
[10]GB500112-2010 Code for seismic design of buildings[S].(in Chinese)
[11]ZHOU Yun.Structural design with metal energy dissipation devices[M].Wuhan:Wuhan University of Technology Press,2006:8-9.(in Chinese)
[4]王亚勇,陈清祥.开孔式软钢阻尼器在西安长乐苑招商局广场4号楼抗震加固中的应用探讨[C].防震减灾工程研究与进展,北京:科学出版社,2004:245-250.
[5]周云,刘季.圆环耗能器的试验研究[J].世界地震工程.1996,12(4):1-7.
[6]周云,刘季.双环软钢耗能器的试验研究[J].地震工程与工程振动.1998,8(2):117-123.
[7]孙峰,周云,俞公骅,等.加劲圆环耗能器性能的试验研究[J].地震工程与工程振动,1999,19(3):34-38.
[8]高健章,叶瑞荛.含金属耗能片斜撑之研究[J].中国土木水利工程学刊(台湾省),1995,7(1):55-62.
[10]GB500112-2010建筑抗震设计规范[S].
[11]周云.金属耗能减震结构设计[M].武汉:武汉理工大学出版社,2006:8-9.
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