重力坝抗滑稳定设计表达式及分项系数研究  

Researches on expression and partial coefficients of anti-sliding stability of gravity dams

作　　者：常晓林[1] 黄东军[2] 蒋春艳[1] 曹去修 

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072 [2]华东勘测设计研究院,浙江杭州310014 [3]长江勘测规划设计研究院,湖北武汉430010

出　　处：《岩土工程学报》2007年第8期1219-1223,共5页Chinese Journal of Geotechnical Engineering

基　　金：国家自然科学基金面上项目(50579055)

摘　　要：对电力行业现行重力坝规范中的抗滑极限状态设计方法进行了探讨,通过对传统刚体极限平衡法的剖析,明确了极限状态设计中作用和抗力函数的表达形式及矢量方向,提出了一种新的等K′法,使坝基双滑面上下游块体具有同等安全系数和同等可靠概率的内涵。根据对多组方案可靠指标的试算比较,提出了具有定量标准的安全系数K′的计算公式及相应的允许指标,建议了一套相应分等分级的分项系数,并对其合理性进行了验证。The wedge stability analysis method specified in the Gravity Dam Design Code of China was discussed. Based on the mechanical mechanism of the traditional rigid limit equilibrium method, the correct expressions of action and resistance were educed and the directions of vectors were presented. A new approach of equal safety degree was proposed for the calculation of reliability index of gravity dams. Then, a safety formula and its allowable index were presented, and a set of corresponding partial coefficients, whose rationality were proven were also proposed.

关 键 词：混凝土重力坝 抗滑稳定 可靠度 等安全度 分项系数 

分 类 号：TV64[水利工程—水利水电工程]