考虑地震动部分相干效应的拱坝随机响应分析模型
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摘要
将随机振动的虚拟激励法与拱坝-地基动力相互作用FE-BE-IBE时域模型结合,发展了一个可以考虑地震动部分相干效应的拱坝随机动力响应计算模型,并用Monte-Carlo方法对模型进行了验证。不同模型的计算结果表明,地震动的部分相干效应对拱坝的动力响应有显著影响。
A random vibration analysis model of arch dam – foundation interaction, which couples the pseudo-excitation algorithm and FE-BE-IBE time domain procedure, is presented. It can conveniently include the effects of arbitrary coherency on the seismic responses of arch dams. To verify the accuracy of the proposed model, Monte Carlo method is employed to calculate the seismic responses of an arch dam. The results demonstrate that the arbitrary coherency effects have significant influences on the seismic responses of arch dams.
A random vibration analysis model of arch dam – foundation interaction, which couples the pseudo-excitation algorithm and FE-BE-IBE time domain procedure, is presented. It can conveniently include the effects of arbitrary coherency on the seismic responses of arch dams. To verify the accuracy of the proposed model, Monte Carlo method is employed to calculate the seismic responses of an arch dam. The results demonstrate that the arbitrary coherency effects have significant influences on the seismic responses of arch dams.
引文
[1]Kiureghian A D,Neuenhofer A.Response spectrum method for multi-suport seismic excitations[J].Earthquake Engineering and Structural Dynamics,1992,21:713~740.
[2]Kiureghian A D,Neuenhofer A.A coherency model for spatially varying ground motions[J].Earthquake Engineering and Structural Dynamics,1996,25:99~111.
[3]Ernesto H Z,Vanmarcke E H.Seismic random vibration analysis of multi-suport structural systems[J].Engineering Mechanics,1994,120:1107~1128.
[4]Lin J H,Zhang W S,Williams F W.Pseudo-excitation algorithm for nonstationary random seismic responses[J].Engineering Structure,1994,4:270~276.
[5]Zhang Chuhan,Jin Feng,Pekau O A.Time domain procedure of FE-BE-IBE coupling for seismic interaction of arch dams and canyons[J].Earthquake Engineering and Structural Dynamics,1995,24:1651~1666.
[6]张亚辉.复杂结构在多种荷载工况下的屈曲及动力分析[D].大连:大连理工大学,1999.Zhang Yahui.Buckling and dynamical behavior of complex structures under various loading[D].Dalian:Dalian University of Technology,1999.(in Chinese)
[7]吴健,金峰.拱坝随机振动分析中的精细直接积分法[J].清华大学学报,2004,44(9):1227~1230.Wu Jian,Jin Feng.Precise direct integration method for random vibration analysis of arch dams[J].Journal of Tsinghua University(Science and Technology),2004,44(9):1227~1230.(in Chinese)
[8]江近仁,洪峰.功率谱与反应谱的转换和人造地震波[J].地震工程与工程振动,1984,4(3):1~11.Jiang Jinren,Hong Feng.Conversion between power spectrum and response spectrum and artificial earthquake[J].Earthquake Engineering and Engineering Vibration,1984,4(3):1~11.(in Chinese)
[9]林家浩,张亚辉.随机振动的虚拟激励法[M].北京:科学出版社,2004.Lin Jiahao,Zhang Yahui.Pseudo-excitation method of random vibration[M].Beijing:Science Press,2004.(in Chinese)
[10]刘先明,叶继红,李爱群.空间相关多点地震动合成的简化方法[J].工程抗震,2003,1:30~36.Liu Xianming,Ye Jihong,Li Aiqun.A simple method for the simulation of time histories of multi-point ground motion[J].Earthquake Resistant Engineering,2003,1:30~36.(in Chinese)
[2]Kiureghian A D,Neuenhofer A.A coherency model for spatially varying ground motions[J].Earthquake Engineering and Structural Dynamics,1996,25:99~111.
[3]Ernesto H Z,Vanmarcke E H.Seismic random vibration analysis of multi-suport structural systems[J].Engineering Mechanics,1994,120:1107~1128.
[4]Lin J H,Zhang W S,Williams F W.Pseudo-excitation algorithm for nonstationary random seismic responses[J].Engineering Structure,1994,4:270~276.
[5]Zhang Chuhan,Jin Feng,Pekau O A.Time domain procedure of FE-BE-IBE coupling for seismic interaction of arch dams and canyons[J].Earthquake Engineering and Structural Dynamics,1995,24:1651~1666.
[6]张亚辉.复杂结构在多种荷载工况下的屈曲及动力分析[D].大连:大连理工大学,1999.Zhang Yahui.Buckling and dynamical behavior of complex structures under various loading[D].Dalian:Dalian University of Technology,1999.(in Chinese)
[7]吴健,金峰.拱坝随机振动分析中的精细直接积分法[J].清华大学学报,2004,44(9):1227~1230.Wu Jian,Jin Feng.Precise direct integration method for random vibration analysis of arch dams[J].Journal of Tsinghua University(Science and Technology),2004,44(9):1227~1230.(in Chinese)
[8]江近仁,洪峰.功率谱与反应谱的转换和人造地震波[J].地震工程与工程振动,1984,4(3):1~11.Jiang Jinren,Hong Feng.Conversion between power spectrum and response spectrum and artificial earthquake[J].Earthquake Engineering and Engineering Vibration,1984,4(3):1~11.(in Chinese)
[9]林家浩,张亚辉.随机振动的虚拟激励法[M].北京:科学出版社,2004.Lin Jiahao,Zhang Yahui.Pseudo-excitation method of random vibration[M].Beijing:Science Press,2004.(in Chinese)
[10]刘先明,叶继红,李爱群.空间相关多点地震动合成的简化方法[J].工程抗震,2003,1:30~36.Liu Xianming,Ye Jihong,Li Aiqun.A simple method for the simulation of time histories of multi-point ground motion[J].Earthquake Resistant Engineering,2003,1:30~36.(in Chinese)
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