ZHAO Lei, LIU Ning-guo. Non-Stationary Random Seismic Analysis of Large-Span Composite Beam Cable-Stayed Bridges Under Multi-Support and Multi-Dimentional Earthquake Excitations[J]. Applied Mathematics and Mechanics, 2017, 38(1): 118-125. doi: 10.21656/1000-0887.370528
Citation: ZHAO Lei, LIU Ning-guo. Non-Stationary Random Seismic Analysis of Large-Span Composite Beam Cable-Stayed Bridges Under Multi-Support and Multi-Dimentional Earthquake Excitations[J]. Applied Mathematics and Mechanics, 2017, 38(1): 118-125. doi: 10.21656/1000-0887.370528

Non-Stationary Random Seismic Analysis of Large-Span Composite Beam Cable-Stayed Bridges Under Multi-Support and Multi-Dimentional Earthquake Excitations

doi: 10.21656/1000-0887.370528
Funds:  The National Natural Science Foundation of China(51178394)
  • Received Date: 2016-11-07
  • Rev Recd Date: 2016-12-21
  • Publish Date: 2017-01-15
  • To investigate the influences of non-stationary earthquake excitations on the random seismic responses of composite beam cable-stayed bridges, the non-stationary random seismic responses of a composite beam cable-stayed bridge were analyzed with the multi-dimensional and multi-support pseudo excitation method to directly solve the absolute displacements by means of general FEM software. The results demonstrate that the non-stationary random seismic responses of the composite beam cable-stayed bridge under multi-support and multi-dimentional earthquake excitations can be calculated efficiently with the pseudo-excitation method based on the absolute displacement solution. The stationary assumption for the structural design will usually lead to conservative results. The traveling wave effects are significant for the responses of the large-span composite beam cable-stayed bridge and will be favorable to the displacement at the tower top and the internal force at the tower bottom, instead will be adverse to the displacement and the internal force at the main beam centre.
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  • [1]
    Soyluk K. Comparison of random vibration methods for multi-support seismic excitation analysis of long-span bridges[J]. Engineering Structures,2004,26(11): 1573-1583.
    [2]
    Sarkar A, Manohar C S. Critical seismic vector random excitations for multiply supported structures[J]. Journal of Sound and Vibration,1998,212(3): 525-546.
    [3]
    史志利, 李忠献. 随机地震动场多点激励下大跨度桥梁地震反应分析方法[J]. 地震工程与工程振动, 2003,23(4): 124-130.(SHI Zhi-li, LI Zhong-xian. Methods of seismic response analysis for long-span bridges under multi-support excitations of random earthquake ground motion[J]. Earthquake Engineering and Engineering Vibration,2003,23(4): 124-130.(in Chinese))
    [4]
    林家浩, 张亚辉. 随机振动的虚拟激励法[M]. 北京: 科学出版社, 2006: 124-163.(LIN Jia-hao, ZHANG Ya-hui. Pseudo Excitation Method for Random Vibration [M]. Beijing: Science Press, 2006: 124-163.(in Chinese))
    [5]
    Lin J H, Zhang Y H, Li Q S. Seismic spatial effects for long-span bridges, using the pseudo excitation method[J]. Engineering Structures,2004,26(9): 1207-1216.
    [6]
    丁阳, 林伟, 李忠献. 大跨度空间结构多维多点非平稳随机地震反应分析[J]. 工程力学, 2007,24(3): 97-103.(DING Yang, LIN Wei, LI Zhong-xian. Non-stationary random seismic analysis of long-span spatial structures under multi-support and multi-dimensional earthquake excitations[J]. Engineering Mechanics,2007,24(3): 97-103.(in Chinese))
    [7]
    李永华, 李思明. 绝对位移直接求解的虚拟激励法[J]. 振动与冲击, 2009,28(10): 185-190.(LI Yong-hua, LI Si-ming. Pseudo excitation method based on solving absolute displacement[J]. Journal of Vibration and Shock,2009,28(10): 185-190.(in Chinese))
    [8]
    石永久, 江洋, 王元清. 直接求解法在结构多点输入地震响应计算中的应用与改进[J]. 工程力学, 2011,28(1): 75-81.(SHI Yong-jiu, JIANG Yang, WANG Yuan-qing. Application and improvement of direct solving method in seismic response analysis of structures under multi-support excitations[J]. Engineering Mechanics,2011,28(1): 75-81.(in Chinses))
    [9]
    贾宏宇, 郑史雄. 直接求解多维多点地震动方程的虚拟激励法[J]. 工程力学, 2013,30(3): 341-346.(JIA Hong-yu, ZHENG Shi-xiong. Pseudo excitation method of direct solving ground motion equation of multi-dimensional and multi-support excitation[J]. Engineering Mechanics,2013,30(3): 341-346.(in Chinese))
    [10]
    曹资, 薛素铎. 空间结构抗震理论与设计[M]. 北京: 科学出版社, 2006: 113-225.(CAO Zi, XUE Su-duo. Seismic Analysis and Design of Spatial Structures [M]. Beijing: Science Press, 2006: 113-225.(in Chinese))
    [11]
    李英民, 刘立平, 赖明. 工程地震动随机功率谱模型的分析和改进[J]. 工程力学, 2008,25(3): 43-48.(LI Ying-ming, LIU Li-ping, LAI Ming. Analysis and improvement of power random spectra of strong ground motions for engineering purpose[J]. Engineering Mechanics,2008,25(3): 43-48.(in Chinese))
    [12]
    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): 55-62.(QU Tie-jun, WANG Jun-jie, WANG Qian-xin. Practical PSD ground motion model with spatial effect[J]. Acta Seismologica Sinica,1996,18(1): 55-62. (in Chinese))
    [13]
    Lin J H, Zhao Y, Zhang Y H. Accurate and highly efficient algorithms for structural stationary nonstationary random responses[J]. Computer Methods in Applied Mechanics and Engineering,2001,191(1/2): 103-110.
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