水力发电学报2012，Vol.31Issue(3)：148-159,12.
重力坝抗滑稳定可靠度分析：（一）相对安全率方法
Reliability analysis on sliding stability of gravity dams： Part Ⅰ,an approach using criterion of safety margin ratio
摘要
Abstract
Extensive application of probabilistic theory in structural and geotechnical engineering requires solutions to a series of issues such as determination of the coefficients of strength parameter variations,establishment of safety criteria and evaluation of the analytical results with deterministic models.This paper proposes a new concept called ＂ratio of safety margin＂ ηR and its calculation method,and demonstrates the equivalence of the ratio of safety margin calculated by the reliability analysis and its corresponding ηF obtained by the traditional method through testing bearing capacity of weightless soils.An extensive assessment based on a testing concrete dam and eight grade-I projects has shown that the calculated values o f ηR and ηF are comparable and correlative,and it verifies that the new concept is useful and applicable to evaluation of structural safety.This paper also presents some calibration results of the relationship ηP=ηR for partial factors and a case study of Xiangjiaba concrete dam,showing application potential of safety margin ratios to practical projects.关键词
水工结构/抗滑稳定/可靠度分析/混凝土重力坝/相对安全率Key words
hydraulic structure/stability against sliding/reliability analysis/concrete gravity dam/ratio of safety margin分类
建筑与水利引用本文复制引用
陈祖煜,徐佳成,孙平,吴超,王玉杰,陈立宏..重力坝抗滑稳定可靠度分析：（一）相对安全率方法[J].水力发电学报,2012,31(3):148-159,12.基金项目
水利部公益性行业科研专项经费项目 （）
国家自然科学青年基金 （）
