| 汶川震区地震动三维地形效应的谱元法模拟 |
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| 引用本文： | 胡元鑫,刘新荣,罗建华,张梁,葛华. 汶川震区地震动三维地形效应的谱元法模拟[J]. 兰州大学学报(自然科学版), 2011, 0(4): 24-32 |
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| 作者姓名： | 胡元鑫 刘新荣 罗建华 张梁 葛华 |
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| 作者单位： | 重庆大学土木工程学院;中国人民解放军后勤工程学院建筑工程系;重庆市地质矿产勘察开发局南江水文地质与工程地质队;中国地质调查局成都地质调查中心; |
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| 基金项目： | 国家自然科学基金创新群体基金项目(50621403); 中国地质调查局项目(1212010914011) |
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| 摘 要： | 针对三维波动弹性动力方程推导了谱元法算法,并考虑三维真实地形及介质的衰减特性,基于并行计算环境采用谱元法和ASTER DEM模型对5.12汶川地震动的地形效应进行了模拟.模拟结果表明陡峻地形对地震波两个水平分量的影响要大于对竖向分量的.震中附近区域的PGA最大值为671 cm/s2,高PGA区多分布于山顶及山脊区域.与...
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| 关 键 词： | 地震动 地形效应 谱元法 汶川地震 |
Simulation of three-dimensional topographic effects on seismic ground motion in Wenchuan earthquake region based upon the spectral-element method |
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| HU Yuan-xin ,LIU Xin-rong ,,LUO Jian-hua ,ZHANG Liang ,GE Hua .College of Civil Engineering,Chongqing University,Chongqing ,China. Simulation of three-dimensional topographic effects on seismic ground motion in Wenchuan earthquake region based upon the spectral-element method[J]. Journal of Lanzhou University(Natural Science), 2011, 0(4): 24-32 |
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| Authors: | HU Yuan-xin LIU Xin-rong LUO Jian-hua ZHANG Liang GE Hua .College of Civil Engineering Chongqing University Chongqing China |
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| Affiliation: | HU Yuan-xin 1,LIU Xin-rong 1,2,LUO Jian-hua 3,ZHANG Liang 1,GE Hua 4 1.College of Civil Engineering,Chongqing University,Chongqing 400045,China 2.Department of Architecture & Civil Engineering,PLA Logistics Engineering College,Chongqing 401311,China 3.Nanjiang Hydrogeology & Engineering Geology Brigade,Chongqing Bureau of Geology and Minerals Exploration,Chongqing 401121,China 4.Chengdu Center of China Geological Survey,China Geological Survey,Chengdu 610081,China |
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| Abstract: | The effects of topography on seismic ground motion of Wenchuan earthquake were simulated based upon elastodynamic equation for 3D wave propagation,the spectral-element method,ASTER DEM model and parallel computation environment and incorporated realistic 3D topography and attenuation of media.The simulated results show that topographic effects due to great rough terrain on two horizontal components of seismic wave are bigger than those on vertical component.The max PGA value in zone near epicentre is 671 cm... |
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| Keywords: | seismic ground motion topographic effect spectral-element method Wenchuan earthquake |
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