| 柴军瑞,仵彦卿.碾压混凝土坝渗流场与应力场耦合分析的数学模型[J].水利学报,2000,31(9):0033-0037 |
| 碾压混凝土坝渗流场与应力场耦合分析的数学模型 |
| Mathematical model for couple analysis of seepage and stress fields in RCCD |
| |
| DOI： |
| 中文关键词: 碾压混凝土坝 层(缝)面渗流 渗流场 应力场 耦合模型 有限元 |
| 英文关键词: RCCD seepage through layer seepage field stress field couple analysis FEM |
| 基金项目: |
|
| 摘要点击次数: 2368 |
| 全文下载次数: 123 |
| 中文摘要: |
| 从碾压混凝土坝的渗透特性出发，分析了碾压混凝土坝层(缝)面渗流与坝体应力相互影响的耦合机理，层(缝)面渗流向层(缝)壁面施加法向渗透压力和切向拖曳力来影响坝体应力，坝体应力改变层(缝)面的等效隙宽来影响渗流，进而提出了碾压混凝土坝渗流场与应力场耦合分析的数学模型，讨论了该耦合模型的有限元数值解法，并给出了工程应用实例。由计算实例可以看出，耦合作用使坝体渗流场发生变化，并且使坝体应力增大，使坝踵处的应力集中加剧。 |
| 英文摘要: |
| Based on the characteristics of seepage through layered RCCD, a mathematical model coupling the seepage analysis with stress field calculation for RCCD is propsed. The flow through layers in RCCD exerts normal seepage pressure and tangent hauling force on the dam body. The apertures of layers vary with the stress condition. The application of this model to calculation of an example by means of FEM is also given. It is shown that the stress will be higher and the stress concentration at the dam hell will be more notable if the coupling effect is taken into account. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |