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基于间接法的重力坝深层抗滑稳定分析

发表时间:2010-02-15  浏览量:1412  下载量:516
全部作者: 陈郡鹏,任青文,杨智慧,陈维清
作者单位: 河海大学土木工程学院
摘 要: 介绍了间接法中强度储备法的定义、原理和计算方法。总结了坝体地基系统常用的2种失稳判据——收敛性判据和突变性判据的判定方法。然后,在归纳ABAUQS中Drucker-Prager(D-P)屈服准则特点的基础上,针对平面应变问题给出了ABAQUS中Mcher-Coulomb(M-C)屈服准则和D=P屈服准则抗剪参数的转换公式。最后,根据强度储备法的计算方法,结合弹塑性有限元分析的相关理论,运用ABAQUS有限元分析软件,对复杂地质条件下某重力坝进行深层抗滑稳定分析。根据收敛性判据、位移突变判据和屈服区分布情况,经过综合分析给出了该坝段的深层抗滑稳定安全系数以及坝体的滑移模式。
关 键 词: 水工结构;深层抗滑稳定;强度储备法;弹塑性有限元;重力坝
Title: Deep anti�sliding stability analysis of gravity dam based on indirect method
Author: CHEN Junpeng, REN Qingwen, YANG Zhihui, CHEN Weiqing
Organization: Cellege of Civil Engineering, Hohai University
Abstract: In this paper, the definition, theory and means of strength reserve method which is included in indirect method were introduced. Non�convergent judgment method and mutation judgment method of unstable state of the dam�foundation system were also summarized. Then the characteristics of Drucker�Prager(D�P) yield criterion in ABAQUS were concluded in the paper. Based on these characteristics, the conversion formula of shear parameters between Mohr�Coulomb(M�C) and Drucker�Prager yield criterion in ABAQUS software was given according to the plane�strain problem. Finally the deep anti�sliding stability analysis of a gravity dam with complicated geological conditions was carried out based on the elastic�plastic FEM theory, the strength reserve method, and ABAQUS software. By non�convergent judgment method, displacement mutation judgment method and judging the equivalent plastic strain zone distribution, the safety coefficients of deep anti�sliding stability and the slide mode of the dam were given.
Key words: hydraulic structure; deep anti�sliding stability; strength reserve method; elastic�plastic finite element method; gravity dam
发表期数: 2010年2月第3期
引用格式: 陈郡鹏,任青文,杨智慧,等. 基于间接法的重力坝深层抗滑稳定分析[J]. 中国科技论文在线精品论文,2010,3(3):273-278.
 
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