| 动参数对三维洞室动态特性的影响分析 |
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| 引用本文： | 马行东,李海波,冯海鹏.动参数对三维洞室动态特性的影响分析[J].地下空间与工程学报,2006,2(1):83-86. |
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| 作者姓名： | 马行东 李海波 冯海鹏 |
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| 作者单位： | 1. 中国科学院武汉岩土力学研究所,湖北,武汉,430071;国家电力公司成都勘察设计研究院,四川,成都,610072
2. 中国科学院武汉岩土力学研究所,湖北,武汉,430071 |
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| 摘 要： | 尝试用FLAC有限差分软件对横震动荷载下三维洞室的一些动态影响因素(幅值、频率、持续时间等)进行了模拟,并进行了三维动力特性分析,初步了解不同影响因素地震动荷载下的洞室动态特性规律。同时初步分析结果表明,在横震荷载作用下,洞室位移随振幅、持续时间的增加而增大,洞室位移随频率的增加先增加后减小。分析有助于我们增加对动荷载下地下洞室围岩的变形和破坏机制的认识。
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| 关 键 词： | 动荷载 动力分析 数值分析 |
| 文章编号： | 1673-0836（2006）01-0083-04 |
| 收稿时间： | 2005-03-31 |
| 修稿时间： | 2005-03-31 |
Analysis of Dynamic Paramaters for Underground Excavation Under Seismic Loading |
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| MA Xing-dong,LI Hai-bo,FENG Hai-peng.Analysis of Dynamic Paramaters for Underground Excavation Under Seismic Loading[J].Chinese Journal of Underground Space and Engineering,2006,2(1):83-86. |
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| Authors: | MA Xing-dong LI Hai-bo FENG Hai-peng |
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| Abstract: | The seismic responses under earthquake is stimulated by finite-difference program FLAC under different dynamic loading factors(swing,frequency,duration)and the characteristics of underground excavation are analyzed in this paper,so as to obtain primarily rules of different influencing factors of seismic responses of tunnel under it.It is reported that the displacements of rock cavern clearly increase with increasing earthquake amplitudes and duration time.It is of help to understand the mechanism of deformation and failure of underground excavation in rock mass. |
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| Keywords: | dynamic loading dynamic analysis numerical analysis |
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