高拱坝稳定安全度研究综述  

Review on safety degree for stability of high arch dams

作　　者：董玉文[1] 任青文[1] 

机构地区：[1]河海大学土木工程学院,江苏南京210098

出　　处：《水利水电科技进展》2006年第5期78-82,共5页Advances in Science and Technology of Water Resources

基　　金：国家自然科学基金资助项目(50379005)

摘　　要：针对我国西部兴起的高拱坝建设热潮,对目前高拱坝稳定安全度的分析方法进行了总结,主要方法有柔度系数法、安全系数法、可靠度方法和模型试验法。总结了拱坝的失效模式和失稳判据;对工程中最常用的安全系数法,系统阐述了计算安全度的数值方法和最新进展;得出拱坝安全度控制标准由局部安全度向整体安全度转变、安全度分析方法由确定性方法向不确定性方法发展的结论,另外常规的拱坝稳定数值分析方法如刚体极限平衡法和有限元法得到不断完善,新型数值方法在拱坝稳定分析中也有很好的应用前景。Aiming at the extensive construction of arch dams in west China, a review was made on some methods currently used for safety degree analysis of arch dams, the methods including the flexibility coefficient method, the safety factor method, the reliability analysis method, and the model test method. The failure modes and instability criteria for arch dams were also summarized. A systematic analysis of the numerical methods as well as their recent development for safety degree calculation shows that the control standard of the safety degree is being changed from the local safety degree to the global safety degree, and that deterministic method for safety factor analysis is being developed to uncertainty one. In addition, the conventional methods for numerical analysis of arch dam stability, such as rigid body limit equilibrium method and FEM, are successively developed, and new numerical methods are of wide scope of application in arch dam stability analysis.

关 键 词：高拱坝 稳定安全度 安全系数 综述 

分 类 号：TV642.4[水利工程—水利水电工程]