机构地区: 河海大学土木与交通学院岩土工程科学研究所
出 处: 《水电能源科学》 2012年第2期99-102,共4页
摘 要: 以锦屏水电站左岸某标段边坡为例,基于有限元强度折减法的基本原理和破坏准则,提出了综合特征点位移增量与折减系数增量的比值关系曲线与迭代次数突变准则编制有限元程序计算边坡的安全系数。计算结果表明,两种失稳判据较吻合,误差仅为1.3%,位移突变与收敛合理,该判据正确、适用。 Taking some part of Jinping hydropower slope for an example,based on fundamental principle and failure criterion of strength reduction finite element method,combination the ratio of feature point displacement increment and strength reduction increment and the iteration sudden change criterion is proposed to compute the safety factor of slope.The results indicate that the two failure criterions have good coherence and only 1.3% error;the sudden change of displacement and convergence are reasonable.So the proposed failure criterion is correct and applicable.