| 岩溶场地地表地震动特性研究 |
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| 引用本文： | 何声,杨仕升,蒙雷.岩溶场地地表地震动特性研究[J].西北地震学报,2015,37(2):534-540. |
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| 作者姓名： | 何声 杨仕升 蒙雷 |
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| 作者单位： | 广西壮族自治区地震局;广西大学土木建筑工程学院 |
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| 基金项目： | 广西科学研究与技术开发计划项目(桂科攻12426001-5) |
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| 摘 要： | 对典型岩溶场地进行土层地震反应分析,并与非岩溶场地土层的地震反应进行对比,研究岩溶场地地表地震动的基本特性,为岩溶区工程场地地震动参数的确定提供参考。实例研究表明:与非岩溶场地的土层地震反应相比,岩溶场地土层对地震波的放大效应较强,地表地震动的频率偏高;当岩溶场地中发育有土洞时,地表地震动加速度峰值比不含土洞的岩溶场地要大。
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| 关 键 词： | 岩溶场地 土洞 地震反应 有限元 |
| 收稿时间： | 2014/6/23 0:00:00 |
Ground Motion Characteristics of Karst Sites |
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| HE Sheng,YANG Shi-sheng and MENG Lei.Ground Motion Characteristics of Karst Sites[J].Northwestern Seismological Journal,2015,37(2):534-540. |
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| Authors: | HE Sheng YANG Shi-sheng and MENG Lei |
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| Institution: | HE Sheng;YANG Shi-sheng;MENG Lei;Earthquake Administration of Guangxi Zhuang Autonomous Region;College of Civil Engineering and Architecture,Guangxi University; |
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| Abstract: | This study describes the use of finite element analysis to study the seismic response of a typical karst site compared with that of other sites.The results showed that compared with other non-karst sites,karst field soil has a stronger amplification effect on the seismic wave,and the ground motion frequency is higher.When there are holes in the karst site,the seismic peak ground acceleration is larger than that of a non-holed karst foundation.These results provide a reference for the ground motion parameters determined at a karst site. |
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| Keywords: | karst site hole seismic response finite element method |
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