摘要
为合理描述土坝由于地震荷载引起的应变局部化与渐进破坏现象 ,本文采用了一种基于类似位移梯度的误差指示的自适应网格有限元技术 ,同时还将快速的、无条件稳定的分步时域解法与自适应技术结合起来。文中对美国著名的LowerSanFernando土坝的分析 。
An adaptive finite element method for localized deformation and progressive failure of fluid infiltrated soils under earthquake loading is presented. The present paper is a direct extension of the research reported by Zienkiewicz and the first author [12] . The adaptive technique has been extended to the problems incorporating dynamic loading and effects of the fluid phases. An efficient computation involving adaptive remeshing has been achieved through the introduction of an unconditionally stable staggered time stepping algorithm. A re analysis of the Lower San Fernando dam slide under earthquake has demonstrated the ability of the proposed approach to dealing with more complicated strain localization problems.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2001年第3期306-310,共5页
Chinese Journal of Geotechnical Engineering
关键词
应变局部化
自适应有限元
分步解法
土坝
strain localization
progressive failure
adaptive finite elements
staggered algorithm
dynamic consolidation
