人民黄河Issue(1)：107-108,2.DOI:10.3969/j.issn.1000-1379.2014.01.035
重力坝深层抗滑稳定强度折减弹塑性有限元法
Strength Reducing Elastic-Plastic Finite Element Method to Analyze the Deep Stability of Gravity Dam
孙伟 1庞俊蕊 1苏龙 1孙建生1
作者信息
- 1. 太原理工大学水利科学与工程学院，山西太原030024
- 折叠
摘要
Abstract
Combined with engineering requirements of the Qingyu Reservoir,the ANSYS finite element software was used to establish overflow grav-ity dam deep sliding stability elastic-plastic calculation model which considered the mechanical properties of weak structural plane of rock in the dam foundation. An analysis of the continuous variation of the distribution of horizontal displacement of dam foundation rock,the characteristics of the magnitude of change of feature points’displacement and the process of the dam foundation rock plastic zones developing to through the founda-tion was took to get the deep sliding stability safety factor of gravity dam by gradually increasing the shear strength reduction coefficient. The safety factor of Qingyu gravity dam analyzed by the strength reducing elastic-plastic finite element method is 3. 0-3. 2,and it is consistent with the limit equilibrium dual ramp stability calculation results 3. 039-3. 667 recommended by specifications. It shows that taking the slip plane displacement mutation and plastic zone perforation as the criterion to judge dam foundation instability and failure is reasonable.关键词
重力坝/深层稳定/强度折减/有限元/清峪水库Key words
gravity dam/deep stability/strength reducing method/finite element/Qingyu Reservoir分类
建筑与水利引用本文复制引用
孙伟,庞俊蕊,苏龙,孙建生..重力坝深层抗滑稳定强度折减弹塑性有限元法[J].人民黄河,2014,(1):107-108,2.
