Dynamic failure numeric simulations of model concrete-faced rock-fill dam
Dynamic failure numeric simulations of model concrete-faced rock-fill dam
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DOI：
10.1016/s0267-7261(02)00139-2
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发表时间：
2002-10
影响因子：
4
通讯作者：
X. Kong;Jun Liu
中科院分区：
文献类型：
--
作者：
X. Kong;Jun Liu
传统的堆石坝数值模拟一般采用有限元法，将堆石体视为连续体材料。但堆石体具有很强的非连续性，基于连续介质理想化的有限元法不能模拟其破坏过程。非连续变形分析（DDA）方法正是圆满解决这一问题的有力工具。本文采用DDA方法对均质堆石坝和混凝土面板堆石坝两种模型坝进行了数值模拟，分析了两种模型坝的动力响应特征和破坏过程。数值模拟的结果与作者以前的动态实验结果一致。
Conventional numeric simulations of rock-fill dams are generally performed finite element method (FEM), in which the rock-fill body is treated as continuum material. But the rock-fill body possesses strong discontinuity and FEM based on continuum idealization cannot simulate its failure process. The discontinuous deformation analysis (DDA) method is just the right tool of solving this problem satisfactorily. In this paper, two kinds of model dams, i.e. homogeneous rock-fill dam and concrete-faced rock-fill dam, are simulated using DDA method, their characteristics of response and failure process are presented. The results from numerical simulations are consistent with those from the author's previous dynamic experiments.