大跨屋盖结构隔震分析研究
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摘要
以某体育馆为工程背景,研究了隔震技术在大跨度屋盖结构中的应用,同时对该隔震结构进行了多点激励下的地震响应研究,讨论了空间非一致激励情况,用模拟的地震波对结构进行了分析。结果表明,采用隔震技术可以减少结构的地震响应,当考虑行波效应后,地震效应有较显著的减小。基于本文研究结果,建议在进行跨度比较大的结构地震响应分析时应考虑行波效应的影响。
Comparison between the seismic response of a long-span gymnasium roof with lead-rubber-bearings(LRB) and without it is carried out under earthquake.Considering the spatial variability effects of ground motions,seismic responses analysis of the model with LRB is conducted in this paper.The seismically isolated long-span roof with LRB is calculated under uniform excitation and multiple excitations respectively,and the response in these cases are obtained and compared.
Comparison between the seismic response of a long-span gymnasium roof with lead-rubber-bearings(LRB) and without it is carried out under earthquake.Considering the spatial variability effects of ground motions,seismic responses analysis of the model with LRB is conducted in this paper.The seismically isolated long-span roof with LRB is calculated under uniform excitation and multiple excitations respectively,and the response in these cases are obtained and compared.
引文
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[7]尚晓江,苏建宇.ANSYS/LS-DYNA动力分析方法与工程实例[M].北京:中国水利水电出版社,2006Shang Xiao-jiang,Su Jian-yu.ANSYS/LS-DYNA dynamicanalysis method and engineering example[M].Beijing:China Water Power Press,2006(in Chinese)
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[2]Shingu K,Hiratsuka K.Dynamic response of base isolatedrotational shell with edge beam and fuzzy vibration control ofthe shell[J].International Journal of Space Structures,1997,12(3&4):173~179
[3]Mokha A S,Lee P L,Wang X,et al.Seismic isolationdesign of the new international terminal at sanfranciscointernational airport[A].Proc.Structures Congress[C],1995:95~98
[4]陈以一.世界建筑结构设计精品选-日本篇[M].北京:中国建筑工业出版社,2001:121~122Chen Yi-yi.Excellent building structure designs over theworld(the parts of Japan)[M].Beijing:ChinaArchitecture&Building Press,2001:121~122(in Chinese)
[5]施卫星,等.上海国际赛车场新闻中心高位隔震研究[J].同济大学学报,2005,33(12):1576~1580Shi Wei-xing,et al.High-Position Seismic Isolation ofPress Center at Shanghai International Circuit[J].Journal ofTongji University(Natural Science),2005,33(12):1576~1580(in Chinese)
[6]熊世树.铅芯橡胶隔震支座恢复力模型的分析方法[J].华中科技大学学报(城市科学版),2003,20(2)Xiong Shi-shu.Analysis of Hysteresis Model of Lead-rubberLaminated Bearing[J].Journal of Huazhong University ofScience and Technology,2003,20(2):28~31(inChinese)
[7]尚晓江,苏建宇.ANSYS/LS-DYNA动力分析方法与工程实例[M].北京:中国水利水电出版社,2006Shang Xiao-jiang,Su Jian-yu.ANSYS/LS-DYNA dynamicanalysis method and engineering example[M].Beijing:China Water Power Press,2006(in Chinese)
[8]屈铁军,王君杰,王前信.空间变化的地震动功率谱的实用模型[J].地震学报,1996,18(1):55~62Qu Tie-jun,Wang Jun-jie,Wang Qian-xin.Utility model ofspatial correlative ground motion spectrum[J].ActaSeismologica Sinica,1996,18(1):55~62(in Chinese)
[9]Loh C H,Yeh Y T.Spatial variation and stochasticmodeling of seismic differential ground movement[J].Earthquake Eng.Struct.Dyn.,1988,16(5):583~596
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