摘要
胶凝堆石坝的分析计算目前多采用线弹性或普通堆石料本构模型来近似处理,不能很好地反映该坝型的真实位移和应力分布特征。根据已提出的胶凝堆石料本构关系,对该坝型进行蓄水期工作性态分析,对7种坝坡的坝体断面进行有限元数值模拟和整体稳定性分析,研究断面变化对该坝型位移、应力分布特征以及大坝整体稳定性的影响。计算结果表明,该坝型有良好的安全稳定性,但随着坝坡的增大,该坝型在经济性提高的同时,安全性降低。
Abstract： The analysis on CSG （ cement sand and gravel） dam generally references linear elastic constitutive model or constitutive model of rockfill material to make approximations, but it cannot truly reflect the displacement and stress distribution characteristics of this dam type. According to the constitutive model of CSG material that has been put forward, the work behavior of CSG dam in storage period was studied. In this article the finite element numerical modeling and the overall body stability analysis for 7 kinds of CSG dam section had engaged in as to study the influence of section change on stress-displacement distribution characteristics and integral stability of this dam type. The results show that CSG dam possess good stability and security, and it proves steeper dam slope lead to better economic rationality but lowers the security. Key words： CSG（cement sand and gravel） dam; CSG material; constitutive model; finite element; work behavior
出处
《人民黄河》
CAS
北大核心
2014年第2期98-100,103,共4页
Yellow River
关键词
胶凝面板堆石坝
胶凝堆石料
本构模型
有限元
工作性态
CSG（cement sand and gravel） dam
CSG material
constitutive model
finite element
work behavior
