水资源与水工程学报Issue(6)：189-192,4.DOI:10.11705/j.issn.1672-643X.2015.06.35
强度准则和失稳判据对有限元强度折减法结果的影响
Influence of strength criterion and collapse criterion on result of strength reduction method of FEM
摘要
Abstract
The paper mainly studied the strength criterion and collapse criterion of FEM with strength re-duction.Starting from the basic principle of strength reduction method ,it reduced some strength parame-ters of slope by reduction factors , combined theory analysis and numerical calculation , and studied some influences of strength rule and collapse criterion through comparison and analysis .The results show that the more the radius of a circle surround by strength criterion on plane ,the greater the safety coefficient of slope becomes .The paper compared the safe coefficient with that from limit equilibrium method and that is near to the result from the strength criterion of equal -area circle .The result indicated that the solution based on the collapse criterion of the plastic region breakthrough is close to Bishop 's solution , the safety coefficient of convergent standard is too large .关键词
强度折减法/强度准则/失稳判据/安全系数Key words
strength reduction technique/strength criterion/collapse criterion/safety coefficient分类
水利科学引用本文复制引用
冯旭..强度准则和失稳判据对有限元强度折减法结果的影响[J].水资源与水工程学报,2015,(6):189-192,4.基金项目
陕西省水利科技计划项目 （）
