水力发电学报2012，Vol.31Issue(4)：175-180,215,7.
基于强度折减法的高土石坝三维抗震稳定分析
Three-dimensional aseismic stability analysis of high rock-fill dams using strength reduction technique
摘要
Abstract
Although limit equilibrium method has been widely used in stability analysis due to its simplicity, it has shortcomings in dealing with three-dimensional problems, while finite element strength reduction is a more practical technique. In this paper, a strength reduction technique and pseudo-static method based on FLAC3D are applied to dynamic stability analysis of rockfill dams under earthquake conditions to study the effects of dam height, dam slope, earthquake intensity and bank slope on the safety factor and the critical slip surface＇s location and shape for two types of rockfill dams, concrete-face rockfill dam and earth-core rockfill dam. To reduce computational cost of stability estimation, two fitting functions are proposed for the two dam types, respectively. The analysis reveals that in the concrete-face case, earthquake intensity and bank slope have significant effects, while in the earth-core case, earthquake intensity has little effect.关键词
水工结构/三维动力稳定/强度折减法/高土石坝/安全系数/滑裂面Key words
hydraulic structure/three-dimensional dynamic stability/strength reduction technique/rockfill dam/safety factor/critical slip surface分类
建筑与水利引用本文复制引用
刘君,程怡..基于强度折减法的高土石坝三维抗震稳定分析[J].水力发电学报,2012,31(4):175-180,215,7.基金项目
国家自然科学基金（90815024,51138001）和辽宁省创新团队项目 （）
