支座摩擦系数对摩擦摆基础隔震结构地震反应的影响
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摘要
对不同地震烈度作用下的摩擦摆基础隔震结构进行了地震反应分析,分析了支座摩擦系数对支座位移、楼层加速度和楼层剪力的影响。结果表明随着摩擦摆支座摩擦系数的增大,支座位移逐渐减小,而结构的加速度和楼层剪力逐渐增大;随着地震作用强度的提高,摩擦系数对支座位移的影响逐渐增大,而摩擦系数对结构加速度和楼层剪力的影响逐渐减小。
The seismic response of base-isolated structure with friction pendulum system to different earthquake intensities was carried out.The influence of the friction coefficient of bearing on its displacement,the acceleration of the structure and the inter-story shear force was analyzed.The results show that as the friction coefficient increasing,the displacement of the bearing will decrease,while the acceleration of the structure and the inter-story shear force will increase.As the intensity of the earthquake action increasing,the influence of the friction coefficient on the displacement of the bearing becomes larger,but its influence on the acceleration of the structure and the inter-story shear force becomes less.
The seismic response of base-isolated structure with friction pendulum system to different earthquake intensities was carried out.The influence of the friction coefficient of bearing on its displacement,the acceleration of the structure and the inter-story shear force was analyzed.The results show that as the friction coefficient increasing,the displacement of the bearing will decrease,while the acceleration of the structure and the inter-story shear force will increase.As the intensity of the earthquake action increasing,the influence of the friction coefficient on the displacement of the bearing becomes larger,but its influence on the acceleration of the structure and the inter-story shear force becomes less.
引文
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[2]Constantinou M C,Roussis P C.Experimental and analytical studies of structures seismically isolated with an uplift restraining friction pendulumsystem[J].Earthquake Engineering and Structural Dynamics,2006,35:595-611.
[3]杨林,常永平,周锡元,等.FPS隔震体系振动台试验与有限元模型对比分析[J].建筑结构学报,2008,29(4):66-72.LYang Lin,Chang Yongping,Zhou Xiyuan,et al.Contrastive analysis of shaking table test and finite element model on friction pendulum isolatedsystem[J].Journal of Building Structures,2008,29(4):66-72.
[4]Mokha A S,Amin N,Constantinou M C,et al.Seismic isolation retrofit of large historic building[J].Journal of Structural Engineering,ASCE,1996,122(3):298-308.
[5]Dicleli M,Mansour M Y.Seismic retrofitting of highway bridges in Illinois using friction pendulum seismic isolation bearings and modeling proce-dures[J].Engineering Structures,2003,25:1139-1156.
[6]薛素铎,赵伟,李雄彦.摩擦摆支座在单层球面网壳结构中的隔震分析[J].世界地震工程,2007,23(2):41-45.Xue Suduo,Zhao Wei,Li Xiongyan.Seismic isolation of single-layer spherical lattice shells with FPS[J].World Earthquake Engineering,2007,23(2):41-45.
[7]焦驰宇,胡世德,管仲国.FPS抗震支座分析模型的比较研究[J].振动与冲击,2007,26(10):113-117.Jiao Chiyu,Hu Shide,Guan Zhongguo.Comparison study on analysis models of FPS seismic isolation support[J].Journal of Vibration andShock,2007,26(10):113-117.
[8]温丽,王曙光,杜东升,等.大型储液罐摩擦摆基底隔震控制分析[J].世界地震工程,2009,25(4):161-166.Wen Li,Wang Shuguang,Du Dongsheng,et al.Controlling analysis of friction pendulum system for the seismic isolation of liquid storage tanks[J].World Earthquake Engineering,2009,25(4):161-166.
[9]徐秀丽,段好安,郎冬梅,等.预应力混凝土大跨连续梁桥隔震设计[J].公路交通科技,2009,26(8):46-50.Xu Xiulii,Duan Hao’an,Lang Dongmei,et al.Seismic isolation design for long-span prestressed concrete continuous girder bridge[J].Journalof Highway and Transportation Research and Development,2009,26(8):46-50.
[10]李洪立,刘昌鹏.苏通大桥引桥抗震设计[C]//中国公路学会桥梁和结构工程分会2006年全国桥梁学术会议论文集,2006:23-28.Li Hongli,Liu Changpeng.The Seismic design of the approach bridge of greatsutongbrige[C]//The Proceedings of the Nationalbridge AcademicConference,the Bridge and Structural Engineering Branch of the China Highway and Transportation society,2006:23-28.
[11]攸青言.摩擦摆基础隔震结构地震反应影响因素分析[D].郑州:郑州大学,2010.You Qingyan.The factor analysis on the seismic response of the base-isolated structure with the friction pendulum system[D].Zhengzhou:Zhengzhou University,2010.
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