堤防地震液化数值模拟及动力反应分析 = Seismic liquefaction numerical simulation and dynamic response of levee embankment

• Main Authors: 陈育民 Chen, Yumin, 仉文岗 Zhang, Wengang, 刘汉龙 Liu, Han-long
• Other Authors: School of Civil and Environmental Engineering
• Format: Article
• Language: Chinese; Chinese
• Published: 2013
• Subjects: DRNTU::Science::Geology::Structural geology
• Online Access: https://hdl.handle.net/10356/94618; http://hdl.handle.net/10220/9003; http://www.cqvip.com/QK/90576A/201103/38395501.html
• Institution: Nanyang Technological University

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;堤顶中心在地震作用下,有效高度下降较多,若此时库内处于高水位或洪水位或遭遇持续暴雨,可能发生溃堤.工程建设中,需对这些薄弱环节进行加固. To understand the performance of Qingcaosha reservoir under earthquake loa...