土石坝变形计算的若干问题

土石坝变形计算的若干问题 English Version

摘要: 本文针对当前土石坝变形计算中的一些重要问题进行了讨论。重点放在对应力路径影响、湿化变形和土的非线性弹性应力-应变本构模型等三大问题上。文中提出了一些理论原则意见和改进的计算方法。本文还对围压水平影响、碾压施工所造成的土料超固结和各向异性等问题作了简单的讨论。
- 应力路径 /
- 湿化变形 /
- 土石坝变形 /
- 坝身 /
- 土坝变形 /
- 若干问题 /
- 应力一应变 /
- 张家咀水库 /
- 湿化过程 /
- 双曲线模型
Abstract: This paper deals with some important technical problems about the calculation of deformation of earth-rock dams, interesting hydraulic engineers at present time. The attention is centered mainly on three most important problems: the influence of stress path, the deformation of soil mass induced by wetting action （for example, during filling of reservoirs） and the constitution models of the non-linear elastic stress-strain behaviors of earth-rock fills. In this paper, some principal theoretical ideas and modified methods of calculation were suggested. Here, some problems about the influence of confining pressure level, also the over-consolidation and anisotropy of fill materials due to compaction procedure during construction were discussed too.