| 堤防地震液化数值模拟及动力反应分析 |
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| 引用本文： | 陈育民,仉文岗,刘汉龙.堤防地震液化数值模拟及动力反应分析[J].解放军理工大学学报,2011,0(3):239-244. |
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| 作者姓名： | 陈育民 仉文岗 刘汉龙 |
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| 作者单位： | 1.河海大学 岩土力学与堤坝工程教育部重点实验室,江苏 南京 210098; 2.河海大学 土木与交通学院,江苏 南京 210098；
3.新加坡南洋理工大学 土木与环境工程学院，新加坡 639798 |
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| 基金项目： | 国家自然科学基金资助项目（50909040）；国家杰出青年科学基金资助项目（50825901）. |
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| 摘 要： | 为了评估青草沙水库在地震作用下的性状,利用FLIP程序分析堤基及上部堤防地震液化变形规律,比较了堤防不同位置处的残余变形、超静孔隙水压力比分布、有效应力路径等.结果表明:抗震设防烈度7度条件下,堤防结构的存在放大了地表的加速度;堤防残余变形主要发生在堤身和堤脚周围一定深度范围,地下12 m及以下土体残余变形很小;堤顶中...
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| 关 键 词： | FLIP 堤防 残余变形 超静孔隙水压力比 有效应力路径 |
| 收稿时间： | 2008-07-23 |
| 修稿时间： | 2008-07-23． |
Seismic liquefaction numerical simulation and dynamic response of
levee embankment |
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| CHEN Yu-min,ZHANG Wen-gang and LIU Han-long.Seismic liquefaction numerical simulation and dynamic response of
levee embankment[J].Journal of PLA University of Science and Technology(Natural Science Edition),2011,0(3):239-244. |
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| Authors: | CHEN Yu-min ZHANG Wen-gang and LIU Han-long |
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| Institution: | 1.Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University,
Nanjing 210098, China; 2.College of Civil and Transportation Engineering, Hohai University, Nanjing 21098, China;
3.School of Civil and Environment Engineering,Nanyang Technological University, Singapore 639798 |
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| Abstract: | To understand the performance of Qingcaosha reservoir under earthquake loading, the seismic liquefaction of levee embankment was studied by the finite element analysis program for liquefaction process (FLIP) code. Residual deformation of different nodes, excess pore water pressure ratio and path of effective stress of different elements were compared. The computational results prove that the acceleration on the ground can be amplified by the levee; that the residual deformation of the soils under 12 meters becomes so little that it can be neglected; that the effective height is largely decreased and that it is very dangerous especially when it is in high or full storage capacity. All these weak points should be reinforced in project constructon. |
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| Keywords: | FLIP levee residual deformation excess pore water pressure path of effective stress |
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