多维地震下平立面不规则金属耗能结构的性能分析
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摘要
为使平立面不规则结构具有良好的抗扭性和整体性,更好地满足抗震设防要求,本文提出了设置金属阻尼器来控制结构平面不规则和立面不规则参数的设想和实现方法,并对一栋9层的L型平立面不规则结构在设置金属阻尼器前后建立了分析模型。通过对该模型的动力时程分析表明,设置金属阻尼器不仅能够有效消耗地震能量,降低结构水平位移,而且在控制扭转变形的同时增强了整体结构的侧向刚度。研究表明:通过设置金属阻尼器控制结构的平立面不规则参数,增强结构整体抗震性能的设想是可行的。
To make flat facade irregular frame structure with good resistance to twist and integrity,to satisfy the requirements of seismic fortification intensity,in this paper,the metal damper to control plane irregular and facade irregular tentative plan and implementation method are put forward,and a nine-floors L flat facade irregular model with metal dampers is established.The dynamic time-history analysis shows that install metal damper can not only reduce the horizontal displacement,also strengthening the structure stiffness and enhance wrest resistant structure the lateral stiffness.Research shows that metal damper can not only effective consume earthquake energy and horizontal displacement also control the torsional deformation and enhance overall structure stiffness under earthquake.By setting a metal damper to control structure parameters of the flat facade irregular,strengthening the structure integrity is feasible.
To make flat facade irregular frame structure with good resistance to twist and integrity,to satisfy the requirements of seismic fortification intensity,in this paper,the metal damper to control plane irregular and facade irregular tentative plan and implementation method are put forward,and a nine-floors L flat facade irregular model with metal dampers is established.The dynamic time-history analysis shows that install metal damper can not only reduce the horizontal displacement,also strengthening the structure stiffness and enhance wrest resistant structure the lateral stiffness.Research shows that metal damper can not only effective consume earthquake energy and horizontal displacement also control the torsional deformation and enhance overall structure stiffness under earthquake.By setting a metal damper to control structure parameters of the flat facade irregular,strengthening the structure integrity is feasible.
引文
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[2]GJG3-2002,高层建筑混凝土结构技术规程[S]GJG3-2002,Technical Specification for ConcreteStructures of Tall Building[S](in Chinese)
[3]聂一恒,周云.偏心结构地震扭转反应的耗能减震控制分析[D].广州:广州大学,2007:17～18Nie Yi-heng,Zhou Yun.Eccentric Structure SeismicTorsional Response Damping Control Analysis of EnergyConsumption[D].Guangzhou:Guangzhou University,2007:17～18(in Chinese)
[4]周云,邓雪松,汤统壁.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):2～4Zhou Yun,Deng Xue-song,Tang Tong-bi.State of theArt and Prospect of Energy Dissipation Technology inChina Mainland[J].Earthquake Resistant Engineeringand Retrofitting,2006,28(6):2～4(in Chinese)
[5]杨树标,郭金伟,李荣华.粘弹性阻尼器控制的不规则结构扭转分析[J].河北工程大学学报,2008,25(4)Yang Shu-biao,Guo Jin-wei,Li Rong-hua.The TorsionalAnalysis of Irregular Structure Controlled by ViscoelasticDamper[J].Journal of Hebei University of Engineering(Natural Scinece Edition),2008,25(4)(in Chinese)
[6]李金玮,朱慈勉.平面不规则结构地震响应的平扭耦联特性研究[D].上海:同济大学,2008Li Jin-wei,Zhu Ci-mian.Planar Irregular theEarthquake Response of the Structure of the Translation-Torsion Coupling Characteristics Research[D].Shanghai:Tongji University,2008:17～20(in Chinese)
[7]李宏男.结构多维抗震理论[M].北京:科学出版社,2006,68～69.Li Hong-nan.Structure Multidimensional Seismic Theory[M].Beijing:Science Press,2006,68～69(in Chinese)
[8]周云.金属耗能减震结构设计[M].武汉:武汉理工大学出版社,2006,110～111Zhou Yun.Metal Energy Dissipation Structure Design[M].Wuhan:Wuhan University of Technology Press,2006,110～111(in Chinese)
[9]刘晶波,杜修力.结构动力学[M].北京:机械工业出版社,2004,139～143Liu Jing-bo,Du Xiu-li.Dynamics of Structures[M].Beijing:Mechanical Industry Press,2004,139～143(inChinese)
[10]闫维明,苏亮.铅挤压阻尼器的数值模拟与试验[J].北京工业大学学报,2008,36(8)Yan Wei-ming,Su Liang.Lead Extrusion DampersUmerical Simulation and Experiment[J].Journal ofBeijing University of Technology,2008,36(8)(inChinese)
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