基于不等比例降强度参数的龙滩碾压混凝土坝稳定分析  

Stability analysis of Longtan RCC dam by unequal proportional reduction material strength parameters method

作　　者：赖国伟[1] 陆述远[1] 常晓林[1] 黄劲松[1] 

机构地区：[1]武汉大学水利水电学院,湖北武汉430072

出　　处：《水利水运工程学报》2002年第2期42-47,共6页Hydro-Science and Engineering

基　　金：国家"九五"科技攻关项目 (编号 :96 - 2 2 0 - 0 1- 0 1(1) )

摘　　要：采用考虑坝体坝基渗流、大坝分期加高、温度效应和应变软化等因素的弹塑性有限元和不等比例降材料强度参数的方法 ,分析了龙滩碾压混凝土重力坝前、后期挡水段和溢流段的渐进破坏过程、破坏机理和极限承载能力 .计算结果表明 。By use of the elastic plastic finite element method and the method of unequal proportional reduction material strength parameters, the gradual failure process and mechanism, and ultimate bearing capacity of non overflow and overflow segment of Longtan RCC dam at the first and last stages are analyzed, considering the seepage of the dam body and foundation, influences of construction stages, temperature effects and strain softening of the materials. Calculation results show that Longtan RCC dam is safe.

关 键 词：碾压混凝土坝 稳定分析 不等比例降材料强度参数法 破坏机理 渗流 温度效应 

分 类 号：TV642.2[水利工程—水利水电工程]