不同构造参数对圆环耗能器性能的影响分析
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摘要
设计了13组不同构造参数的圆环耗能器,采用ABAQUS软件对安装在支撑框架结构中的圆环耗能器进行参数分析,研究圆环钢板厚度、圆环外直径、支撑角度、圆环钢板局部削弱形式和削弱深度对圆环耗能器性能的影响。研究结果表明:圆环耗能器滞回曲线稳定、饱满,塑性耗能能力强;随着圆环钢板厚度的增加或者圆环外直径的减小,圆环耗能器初始刚度和屈服力增大;支撑与横梁之间的角度对圆环耗能器性能有一定影响,交叉支撑角度宜取45°左右;圆环钢板局部削弱圆环耗能器比不削弱圆环耗能器具有更好的耗能效果;圆环钢板局部削弱形式宜采用圆弧式,且钢板削弱深度宜控制在圆环钢板宽度的20%~30%。
Thirteen different models were designed to study the bearing capacity and the hysteretic performance of the ring damper installed in the braced frame. The constitutional parameters of the ring damper included the thickness of the ring plate,the diameter of ring,the angle of the brace,the weaken form and the weaken depth.All models were carried out in numerical simulation by ABAQUS.The analysis results showed that the ring damper had stable and full hysteretic curve,and posed excellent energy dissipation capacity.The initial stiffness and yield capacity of the ring damper improved with the thickness of the ring damper plate increased or the diameter of the ring decreased.The performance of the ring damper was influenced by the angle between brace and beam,and the angle should be about 45°.When the plate of the ring damper weakened partly,the ring damper showed better energy dissipation capacity.Compared with strip-weakened,the arc-weakened form was more reasonable for the ring damper,and the weakened depth of the ring plate should be controlled at 20%～30% of the ring plate width.
Thirteen different models were designed to study the bearing capacity and the hysteretic performance of the ring damper installed in the braced frame. The constitutional parameters of the ring damper included the thickness of the ring plate,the diameter of ring,the angle of the brace,the weaken form and the weaken depth.All models were carried out in numerical simulation by ABAQUS.The analysis results showed that the ring damper had stable and full hysteretic curve,and posed excellent energy dissipation capacity.The initial stiffness and yield capacity of the ring damper improved with the thickness of the ring damper plate increased or the diameter of the ring decreased.The performance of the ring damper was influenced by the angle between brace and beam,and the angle should be about 45°.When the plate of the ring damper weakened partly,the ring damper showed better energy dissipation capacity.Compared with strip-weakened,the arc-weakened form was more reasonable for the ring damper,and the weakened depth of the ring plate should be controlled at 20%～30% of the ring plate width.
引文
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[3]吴从晓,周云,王廷彦.金属耗能器的类型、性能及工程应用[J].工程抗震与加固改造,2006,28(1):87-94.Wu C X,Zhou Y,Wang T Y.Types andperformance of metallic dampers and their engineeringapplications[J].Earthquake Resistant Engineeringand Retrofitting,2006,28(1):87-94.
[4]周云,邓雪松,汤统壁,等.中国(大陆)耗能减震技术理论研究、应用的回顾与前瞻[J].工程抗震与加固改造,2006,28(6):1-15.Zhou Y,Deng X S,Tang T B,et al.State of the artand prospect of energy dissipation technology in ChinaMainland[J].Earthquake Resistant Engineering andRetrofitting,2006,28(6):1-15.
[5]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.Zhou Y.Structural Design with Metal EnergyDissipation Devices[M].Wuhan:Wuhan University ofTechnology Press,2006.
[6]Tyler R G.Preliminary test on an energy absorbingelement for braced structures under earthquakeloading[J].Bulletin of The New Zealand NationalSociety for Earthquake Engineering,1983,16(3):201-212.
[7]谢昌旺,赵采志.抗震支撑吸能器[J].世界地震工程,1985,(1):39-45.Xie Ch W,Zhao C Zh.Energy dissipation brace[J].World Earthquake Engineering,1985,(1):39-45.
[8]刘伟庆,魏琏,丁大钧,等.塑性耗能支撑钢筋混凝土框架的低周反复荷载试验研究[J].南京建筑工程学院学报,1996,(3):11-18.Liu W Q,Wei L,Ding D J,et al.Experimental studyof low-cycle loading test on steel braced RC frameswith plastic damping devices[J].Journal of NanjingArchitectural and Civil Engineering Institute,1996,(3):11-18.
[9]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.Zhou Y,Liu J.Experimental study on the behavingof circular ring energy dissipater[J].WorldEarthquake Engineering,1996,12(4):1-7.
[10]Maleki S,Bagheri S.Pipe damper,Part I:Experimental and analytical study[J].Journal ofConstructional Steel Research,2010,(66):1088-1095.
[11]刘展.ABAQUS6.6基础教程与实例详解[M].北京:中国水利水电出版社,2008.Liu Zh.Rudimentary Lectures and Explain inExamples on ABAQUS6.6[M].Beijing:ChinaWaterPower Press,2008.
[12]GB 500112-2010,建筑抗震设计规范[S].
[13]Soong T T,Dargush G F.Passive Energy DissipationSystems in Structural Engineering[M].UK:JohnWiley&Sons,1997.
[14]JGJ 101-96,建筑抗震试验方法规程[S].
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