非均匀黄土地层的随机地震反应特征
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摘要
用振型分解法对黄土场地地层的地震反应进行了分析。推导建立了地层剪切模量随深度呈线性变化时黄土场地地层地震反应的一般解,并用MATLAB对该方法进行了编程和实例计算。算例结果表明,非均匀黄土地层的地震反应具有明显的放大作用。
The stochastic seismic response characteristics of the inequable loess stratum were analyzed by using the mode shape decomposed method.The general solution on the stochastic seismic response of the loess stratum is deduced,in which the shear modulus changes linearly with the depth.In addition,a program for this method is compiled by MATLAB and an example of this computational process is given.The results show that the seismic response of the inequable loess stratum has the obvious magnification effect.
The stochastic seismic response characteristics of the inequable loess stratum were analyzed by using the mode shape decomposed method.The general solution on the stochastic seismic response of the loess stratum is deduced,in which the shear modulus changes linearly with the depth.In addition,a program for this method is compiled by MATLAB and an example of this computational process is given.The results show that the seismic response of the inequable loess stratum has the obvious magnification effect.
引文
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[2]门玉民,黄义,刘增荣.场地土的随机地震反应分析[J].工程地质学报,2001,9(1):68-73.(MENGYumin,HUANG Yi,LIU Zengrong.Analysis on Ran-dom Seismic Response of Site Soil[J].Journal of Engi-neering Geology,2001,9(1):68-73.(in Chinese))
[3]张克绪,谢君斐.土动力学[M].北京:地震出版社1989.(ZHANG Kexu,XIE Junpei.Soil Dynamics[M].Beijing:Earthquake Press,1989.(in Chinese))
[4]刘宗贤,李玉亭.桩基础在阻尼与分层弹性地基场地土波动影响下的横向地震反应分析.地震工程与工程振动.1994,14(3):47-59.(LIU Zongxian,LIYuting.The Lateral Seismic Response Analysis for thePile Foundation under the Influence of Damping andLayer Elasto-Foundation Bed Site Soil Wave Motion,Earthquake Engineering and Engineering Vibration,1994,14(3):47-59.(in Chinese))
[5]George Gazetas,Ke Fan,Amir Kaynia.Dynamic Re-sponse of pile groups with different configurations.Soildynamics and earthquake engineering.1993(12):239-257.
[6]蒯行成,沈蒲生.层状介质中群桩竖向和摇摆动力阻抗的简化计算方法.土木工程学报.1999,32(5):62-69.(KUAI Xingcheng,SHEN Pusheng.SimpleMethod for Calculating Dynamic Vertical and RockingImpedance 0f Pile Groups in Layered Media.China Civ-il Engineering Journal,1999,32(5):62-69.(in Chi-nese))
[7]王兰民.黄土动力学[M].北京:地震出版社2003.(WANG Lanmin.Loess Dynamics[M].Beijing:Earthquake Press,2003.(in Chinese))
[2]门玉民,黄义,刘增荣.场地土的随机地震反应分析[J].工程地质学报,2001,9(1):68-73.(MENGYumin,HUANG Yi,LIU Zengrong.Analysis on Ran-dom Seismic Response of Site Soil[J].Journal of Engi-neering Geology,2001,9(1):68-73.(in Chinese))
[3]张克绪,谢君斐.土动力学[M].北京:地震出版社1989.(ZHANG Kexu,XIE Junpei.Soil Dynamics[M].Beijing:Earthquake Press,1989.(in Chinese))
[4]刘宗贤,李玉亭.桩基础在阻尼与分层弹性地基场地土波动影响下的横向地震反应分析.地震工程与工程振动.1994,14(3):47-59.(LIU Zongxian,LIYuting.The Lateral Seismic Response Analysis for thePile Foundation under the Influence of Damping andLayer Elasto-Foundation Bed Site Soil Wave Motion,Earthquake Engineering and Engineering Vibration,1994,14(3):47-59.(in Chinese))
[5]George Gazetas,Ke Fan,Amir Kaynia.Dynamic Re-sponse of pile groups with different configurations.Soildynamics and earthquake engineering.1993(12):239-257.
[6]蒯行成,沈蒲生.层状介质中群桩竖向和摇摆动力阻抗的简化计算方法.土木工程学报.1999,32(5):62-69.(KUAI Xingcheng,SHEN Pusheng.SimpleMethod for Calculating Dynamic Vertical and RockingImpedance 0f Pile Groups in Layered Media.China Civ-il Engineering Journal,1999,32(5):62-69.(in Chi-nese))
[7]王兰民.黄土动力学[M].北京:地震出版社2003.(WANG Lanmin.Loess Dynamics[M].Beijing:Earthquake Press,2003.(in Chinese))
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