自锚式悬索桥的平稳/非平稳随机地震响应
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摘要
通过引入均匀调制演变函数,考虑了地震激励幅值的非平稳性。同时考虑了地震动空间效应,包括行波效应、部分相干效应和局部场地效应的影响,对一自锚式混凝土悬索桥结构进行了地震反应分析。计算了平稳/非平稳地面激励下主塔弯矩以及剪力反应。计算结果表明,考虑非平稳因素可使地震反应峰值减小,行波效应和相干效应使结构地震反应增大。
The uniformly modulated evolutionary function is introduced for the seismic response analysis of a self-anchored suspension bridge with the non-stationary seismic excitation amplitudes and the seismic spatial varying ground motion effect including wave passage effect, ground motion coherence loss and local-spatial variation ground effect taken into account. The bending moment and shearing force of the tower are investigated under stationary and non-stationary ground excitations. It can be verified that the seismic response peak values are decreased under non-stationary excitation. By taking into account wave passage effect and coherence loss, the seismic response peak values are increased.
The uniformly modulated evolutionary function is introduced for the seismic response analysis of a self-anchored suspension bridge with the non-stationary seismic excitation amplitudes and the seismic spatial varying ground motion effect including wave passage effect, ground motion coherence loss and local-spatial variation ground effect taken into account. The bending moment and shearing force of the tower are investigated under stationary and non-stationary ground excitations. It can be verified that the seismic response peak values are decreased under non-stationary excitation. By taking into account wave passage effect and coherence loss, the seismic response peak values are increased.
引文
[1]Ochsendorf J A,Villington D P.Self-anchored suspension bridges[J].Journal of Bridge Engineering,1999,4(3):155~155.
[2]钟万勰.一个高效结构随机响应算法系列—虚拟激励法[J].自然科学进展—国家重点实验室通讯,1996,6(4):394~401.Zhong Wanxie.A fast algorithm for stochastic responses of structures[J].Progress in Nature Science-Communication of State Key Laboratory,1996,6(4):394~401.(in Chinese)
[3]钟万勰.结构动力方程的精细时程积分法[J].大连理工大学学报,1994,34(2):131~136.Zhong Wanxie.On precise time-integration method for structural dynamics[J].Journal of Dalian University of Technology,1994,34(2):131~136.(in Chinese)
[4]林家浩.非平稳随机地震响应的精确高效算法[J].地震工程与工程振动,1993,13(1):36~41.Lin Jiahao.An accurate and efficient algorithm of non-stationary stochastic seismic responses[J].Journal of Earthquake Engineering and Engineering Vibration,1993,13(1):36~41.(in Chinese)
[5]林家浩,钟万勰,张亚辉.大跨度结构抗震计算的随机振动方法[J].建筑结构学报,2002,21(1):62~69.Lin Jiahao,Zhong Wanxie,Zhang Yahui.Seismic analysis of long span structures by means of random vibration approach[J].Journal of Building Structures,2002,21(1):62~69.(in Chinese)
[6]Ahmed M Abdel-Ghaffe,Nazmy A S.3-D Nolinear seismic behavior of cable-stayed bridges[J].Journal of Structural Engineering,1988,117(11):3456~3476.
[7]Ahmed M Abdel-Ghaffe,Lawrenci I Rubin.Suspension bridge response to multiple-support excitations[J].Journal of the Engineering Mechanics Division,ASCE,1982,108(EM2):419~435.
[8]Ahmed M Abdel-Ghaffer,Lawrence I Rubin.Lateral earthquake response of suspension bridges[J].Journal of Structural Engineering,1983,109(3):664~675.
[9]项海帆.斜张桥在行波作用下的地震反应分析[J].同济大学学报,1982,11(2):1~8.Xiang Haifan.Seismic analysis of cable-stayed bridges subjected to traveling effect[J].Journal of Tongji University,1982,11(2):1~8.(in Chinese)
[10]范立础,王君杰,陈玮.非一致地震激励下大跨度斜拉桥的响应特征[J].计算力学学报,2001,18(3):358~363.Fan Lichu,Wang Junjie,Chen Wei.Response characteristics of long-span cable-stayed bridgesunder non-uniform seismic action[J].Journal of Computational Mechanics,2001,18(3):358~363.(in Chinese)
[11]陈幼平,周宏业.斜拉桥地震反应的行波效应[J].土木工程学报,1996,29(6):61~67.Chen Youping,Zhou Hongye.Seismic behavior of cable-stayed bridge under traveling wave excitation[J].Journal of Civil Engineering,1996,29(6):61~67.(in Chinese)
[12]李国豪.工程结构抗震动力学[M].上海:上海科学技术出版社,1980.Li Guohao.Seismic resistance dynamics of engineering structures[M].Shanghai:Shanghai Science and Technology Press,1980.(in Chinese)
[13]范立础.桥梁抗震[M].上海:同济大学出版社,1997.Fan Lichu.Seismic resistance of bridges[M].Shanghai:Tongji University Press,1997.(in Chinese)
[14]屈铁军,王前信.多点输入地震反应分析研究的进展[J].世界地震工程,1993,11(1):30~36.Qu Tiejun,Wang Qianxin.Progress in studies of seismic response analysis under multiple support excitations[J].Journal of World Seismic Engineering,1993,11(1):30~36.(in Chinese)
[2]钟万勰.一个高效结构随机响应算法系列—虚拟激励法[J].自然科学进展—国家重点实验室通讯,1996,6(4):394~401.Zhong Wanxie.A fast algorithm for stochastic responses of structures[J].Progress in Nature Science-Communication of State Key Laboratory,1996,6(4):394~401.(in Chinese)
[3]钟万勰.结构动力方程的精细时程积分法[J].大连理工大学学报,1994,34(2):131~136.Zhong Wanxie.On precise time-integration method for structural dynamics[J].Journal of Dalian University of Technology,1994,34(2):131~136.(in Chinese)
[4]林家浩.非平稳随机地震响应的精确高效算法[J].地震工程与工程振动,1993,13(1):36~41.Lin Jiahao.An accurate and efficient algorithm of non-stationary stochastic seismic responses[J].Journal of Earthquake Engineering and Engineering Vibration,1993,13(1):36~41.(in Chinese)
[5]林家浩,钟万勰,张亚辉.大跨度结构抗震计算的随机振动方法[J].建筑结构学报,2002,21(1):62~69.Lin Jiahao,Zhong Wanxie,Zhang Yahui.Seismic analysis of long span structures by means of random vibration approach[J].Journal of Building Structures,2002,21(1):62~69.(in Chinese)
[6]Ahmed M Abdel-Ghaffe,Nazmy A S.3-D Nolinear seismic behavior of cable-stayed bridges[J].Journal of Structural Engineering,1988,117(11):3456~3476.
[7]Ahmed M Abdel-Ghaffe,Lawrenci I Rubin.Suspension bridge response to multiple-support excitations[J].Journal of the Engineering Mechanics Division,ASCE,1982,108(EM2):419~435.
[8]Ahmed M Abdel-Ghaffer,Lawrence I Rubin.Lateral earthquake response of suspension bridges[J].Journal of Structural Engineering,1983,109(3):664~675.
[9]项海帆.斜张桥在行波作用下的地震反应分析[J].同济大学学报,1982,11(2):1~8.Xiang Haifan.Seismic analysis of cable-stayed bridges subjected to traveling effect[J].Journal of Tongji University,1982,11(2):1~8.(in Chinese)
[10]范立础,王君杰,陈玮.非一致地震激励下大跨度斜拉桥的响应特征[J].计算力学学报,2001,18(3):358~363.Fan Lichu,Wang Junjie,Chen Wei.Response characteristics of long-span cable-stayed bridgesunder non-uniform seismic action[J].Journal of Computational Mechanics,2001,18(3):358~363.(in Chinese)
[11]陈幼平,周宏业.斜拉桥地震反应的行波效应[J].土木工程学报,1996,29(6):61~67.Chen Youping,Zhou Hongye.Seismic behavior of cable-stayed bridge under traveling wave excitation[J].Journal of Civil Engineering,1996,29(6):61~67.(in Chinese)
[12]李国豪.工程结构抗震动力学[M].上海:上海科学技术出版社,1980.Li Guohao.Seismic resistance dynamics of engineering structures[M].Shanghai:Shanghai Science and Technology Press,1980.(in Chinese)
[13]范立础.桥梁抗震[M].上海:同济大学出版社,1997.Fan Lichu.Seismic resistance of bridges[M].Shanghai:Tongji University Press,1997.(in Chinese)
[14]屈铁军,王前信.多点输入地震反应分析研究的进展[J].世界地震工程,1993,11(1):30~36.Qu Tiejun,Wang Qianxin.Progress in studies of seismic response analysis under multiple support excitations[J].Journal of World Seismic Engineering,1993,11(1):30~36.(in Chinese)
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