| 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，分析了龙潍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，龙滩大坝是安全稳定的。 |
| 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 |
| DOI： |
| 分类号:TV642.2 |
| 基金项目:国家“九五”科技攻关项目 (编号 :96 - 2 2 0 - 0 1- 0 1(1) ) |
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| Stability analysis of Longtan RCC dam by unequal proportional reduction material strength parameters method |
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LAI Guo wei,LU Shu yuan,CHANG Xiao lin,HUANG Jin song
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| Abstract: |
| 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. |
| Key words: unequal proportional reduction material strength parameters method,failure mechanism,stability analysis,Longtan RCC dam |
