水力发电2012，Vol.38Issue(10)：36-39,52,5.
高拱坝安全度计算方法对比分析
Comparative Analysis on Calculation Methods of Safety Degree for High Arch Dam
摘要
Abstract
The overload method, strength reserve method and synthetical tools are main tools for evaluating the overall safety degree of arch dam by FEM, and corresponding instability criterions mainly include plastic zone transfixion criterion, displacement catastrophe criterion and yield volume ratio catastrophe criterion. The understandings in choosing damage simulation method and instability criterion are no uniform at present Combining with actual engineering cases, the characteristics of above three calculation methods and three instability criterions are compared. The results show that, (a) the overload method and strength reserve method can conclude different failure mode of ach dam, (b) the calculate result of synthetical method is effected by the combination form of overload and strength decline, (c) the plastic zone transfixion criterion has no objective index yet, which is largely influenced by human factors, (d) the displacement catastrophe criterion is closely related to the choose of instability control point, and (e) the yield volume ratio catastrophe criterion is slightly effected by the strength and structure of local materials as it takes the yield volume of dam body and its foundation system as a study object关键词
拱坝/计算方法/安全度/失稳判据Key words
arch dam/ calculation method/ safety degree/ instability criterion分类
建筑与水利引用本文复制引用
宋鹏,程琳,田振华..高拱坝安全度计算方法对比分析[J].水力发电,2012,38(10):36-39,52,5.基金项目
国家自然科学基金资助项目(51139001,51179066,51079046,50909041) （51139001,51179066,51079046,50909041）
华电集团科技项目(KJ10-02-22) （KJ10-02-22）
