多点输入下大跨弦支筒壳结构地震响应分析
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摘要
为了计算多点输入效应对大跨弦支筒壳结构地震响应的影响程度,通过有限元软件ANSYS建立弦支筒壳结构模型,并对结构进行多遇地震下的多点输入和一致输入的时程分析,选择合理的视波速来考虑行波效应的影响,统计分析多点输入下构件最大应力、超载比例以及超载构件分布规律等情况,最终将多点地震输入响应分析与一致输入进行比较。结果表明,多点输入下设计应力比一致输入增大的构件占有很大的比例。因此,在大跨弦支筒壳结构的设计过程中,多点输入下的地震分析是必不可少的。
To study the influence of seismic response of large-span cable-supported barrel vault to multi-support excitations, the structural model was established by using the FEM software ANSYS. The time-history method was used in the structural seismic response analysis to uniform excitation and multiple excitations. The wave-passage effect was considered by selecting some reasonable apparent wave velocity. Different responses including uniform and multi-support input were compared by the parameter of the component maximum stress, overload component ratio and overload component distribution. The results show that a majority of components' design stress improve after considering the multi-support excitation effect. So the analysis of seismic response of large-span cable-supported barrel vault to multisupport excitations is essential in the structure design.
To study the influence of seismic response of large-span cable-supported barrel vault to multi-support excitations, the structural model was established by using the FEM software ANSYS. The time-history method was used in the structural seismic response analysis to uniform excitation and multiple excitations. The wave-passage effect was considered by selecting some reasonable apparent wave velocity. Different responses including uniform and multi-support input were compared by the parameter of the component maximum stress, overload component ratio and overload component distribution. The results show that a majority of components' design stress improve after considering the multi-support excitation effect. So the analysis of seismic response of large-span cable-supported barrel vault to multisupport excitations is essential in the structure design.
引文
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[2]王元清,赵博,丁大益,等.基于多点地震反应合肥新桥国际机场钢结构体系比选[J].土木工程学报,2012,45(S2):72-75(Wang Yuanqing,Zhao Bo,Ding Dayi,et al.The steel structure system comparison of Hefei Xinqiao Airport Terminal based on the seismic response under multisupport excitations[J].China Civil Engineering Journal,2012,45(S2):72-75(in Chinese))
[3]王元清,赵博,丁大益,等.合肥新桥国际机场航站楼钢结构多点地震输入响应分析[J].空间结构,2013,19(4):74-80(Wang Yuanqing,Zhao Bo,Ding Dayi,et al.Time-histo ry analysis of seismic response of Hefei Xinqiao Airport Terminal subjected to non-uniform ground motions[J].Spatial Structures,2013,19(4):74-80(in Chinese))
[4]石永久,赵博,陈志华,等.成都东客站钢结构多点地震输入响应分析[J].沈阳建筑大学学报:自然科学版,2014,30(1):1-8(Shi Yongjiu,Zhao Bo,Chen Zhihua,et al.Time-History analysis of seismic response of Chengdu eas t railway station subjected to non-uniform ground motions[J].Journal of Shenyang Jianzhu University:Natural Science,2014,30(1):1-8(in Chinese))
[5]罗尧治,王荣.索穹顶结构动力特性及多维多点抗震性能研究[J].浙江大学学报:工学版,2005,39(1):39-45(Luo Yaozhi,Wang Rong.Study on dynamic characteristics and behavior of cable dome subjected to multi-di mensional and multi-point seismic excitations[J].Journal of Zhejiang University:Engineering Science,2005,39(1):39-45(in Chinese))
[6]刘枫,肖从真,徐自国,等.首都机场3号航站楼多维多点输入时程地震反应分析[J].建筑结构学报,2006,27(5):56-63(Liu Feng,Xiao Congzhen,Xu Ziguo,et al.Timehistory analysis of terminal 3 of the Capital Airport under multi-support and multi-dimension seismic excitation[J].Journal of Building Structures,2006,27(5):56-63(in Chinese))
[7]杨庆山,刘文华,田玉基.国家体育场在多点激励作用下的地震反应分析[J].土木工程学报,2008,41(2):35-41(Yang Qi ngshan,Liu Wenhua,Tian Yuji.Response analysis of national stadium under specially Variable earthquake ground motions[J].China Civil Engineering Journal,2008,41(2):35-41(in Chinese))
[8]江洋,石永久,王元清,等.大跨门式钢管桁架结构多点输入地震响应分析[J].北京交通大学学报,2009,33(4):88-93(Jiang Yang,Shi Yongjiu,Wang Yuanqing,et al.Seismic response analysis of large-span gate-type tube truss structures under multi-support excitation[J].Jo urnal of Beijing Jiaotong University,2009,33(4):88-93(in Chinese))
[9]刘先明,叶继红,李爱群,等.AMECO维修机库的多点输入反应测试与分析[J].建筑结构学报,2004,25(5):17-21(Liu Xianming,Ye Jihong,Li Aiqun,et al.Test and analy sis of responses of hangar of capital airport under multiple excitations[J].Journal of Building Structures,2004,25(5):17-21(in Chinese))
[10]叶继红,周树路,包伟,等.老山奥运自行车馆多点激励反应测试与分析[J].中国科学E辑:技术科学,2008,38(9):1440-1452(Ye Jihong,Zhou Shulu,Bao Wei,et al.Vibration test and analysis of Laoshan bicycle gymnasium for the Olympic Games under multi-support excitations[J].Science in China Series E:Technological Sciences,2008,38(9):1440-1452(in Chinese))
[11]李忠献,林伟,丁阳.大跨度空间网格结构多维多点随机地震反应分析[J].地震工程与工程振动,2006,26(1):56-63(Li Zhongxian,Lin Wei,Ding Yang.Random seismic response analysis of long-span spatial lattice structure under three-dimensional and multi-support earthquake excitations[J].Earthquake Engineering and Engineering Vibration,2006,26(1):56-63(in Chinese))
[12]梁嘉庆.大跨空间结构在非一致地震输入下的弹性响应分析[D].南京:东南大学,2004(Du Jiaqing.Study on elastic vibration of space structures under non-uniform excitations[D].Nanjing:Southeast University,2004(in Chinese))
[13]Su L,Dong S,Kato S.Seismic design for steel trussed arch to multi-support excitations[J].Journal of Constructional Steel Research,2007,63(6):725-734
[14]储烨.多点输入下大跨空间网格结构弹塑性地震响应及强度破坏分析[D].南京:东南大学,2006(Chu Ye.Elastoplastic seismic response and strength fracture analysis of space lattice structures under multi-support excitation[D].Nanjing:Southeast University,2006(in Chinese))
[15]GB50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010(GB50011—2010 Code for seismic design of buildings[S].Beijing:China Architecture and Building Press,2010(in Chinese))
[16]赵博,王元清,陈志华,等.多点地震输入下大跨空间结构试验研究与响应分析研究进展[J].钢结构,2012,27(S):184-193(Zhao Bo,Wang Yuanqing,Chen Zhihua,et al.State of seismic response analysis of large-span spacial structures under multi-support excitations[J].Steel Structures,2012,27(S):184-193(in Chinese))
[17]Clough R W,Penzien J.Dynamics of structures[M].New York:Mc Graw-Hill Inc,1993
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