哈尔滨工程大学学报2009，Vol.30Issue(9)：1007-1011,5.DOI:10.3969/j.issn.1006-7043.2009.09.007
确定岩质边坡地震安全系数的新方法
New method for determining the seismic safety factor of a rock slope
摘要
Abstract
The safety factor for a rock slope experiencing seismic activity is a function that changes with time. Assessments of the potential instability of a rock slope under seismic stress have been based on a time history of a rock slope's safety factor. This is a difficult engineering problem that remains unresolved. Based on the explicit finite element method, a new method of calculating the dynamic safety factor was proposed. To enhance reliability theory,a new concept, a dynamic stability evaluation index, more accurately called a dynamic safety factor of reliability,was proposed, and a method for calculating it was developed. The proposed dynamic safety factor of reliability of rock slope equals to the difference that the mean value of time history of dynamic safety factor of rock slope subtracts the product of standard error of time history of safety factor and risk level accepted by engineering. This compactly integrates stability evaluation of slope with an evaluation of acceptable levels of risk. The proposed method was used to calculate the safety factor for a rock slope, and the result was compared to that derived using the pseudo-static method. The comparison indicates that the proposed method is reliable, and can be used directly in engineering.关键词
岩质边坡/地震/动力安全系数/可靠度Key words
rock slope/ earthquake/ dynamic safety factor/ reliability分类
矿业与冶金引用本文复制引用
刘红帅,唐立强,薄景山,刘德东..确定岩质边坡地震安全系数的新方法[J].哈尔滨工程大学学报,2009,30(9):1007-1011,5.基金项目
国家自然科学基金资助项目(40702055) （40702055）
中国博士后基金资助项目(20080430884). （20080430884）
