| 崔皓东,朱岳明.蓄水初期的坝体非稳定渗流场与温度场耦合的理论模型及数值模拟[J].水利学报,2009,40(2): |
| 蓄水初期的坝体非稳定渗流场与温度场耦合的理论模型及数值模拟 |
| Theoretical model and numerical simulation by coupling unsteady seepage field with temperature field during initial impounding period of concrete dams |
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| DOI： |
| 中文关键词: 大坝 非稳定渗流 温度场 耦合分析 数值模拟 |
| 英文关键词: concrete dam unsteady seepage field temperature field coupling analysis numerical simulation |
| 基金项目: |
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| 中文摘要: |
| 为更准确全面地分析混凝土坝体蓄水初期的真实工作状态，根据热传导和渗流理论，提出非稳定渗流场与温度场耦合的控制方程。用Galerkin方法将方程在空间域和时间域进行离散，编制了相应的三维有限元程序。通过对混凝土坝算例的计算结果分析表明，蓄水初期坝体渗流场对坝体上游侧温度场影响明显，且随时间和空间变化。因此，在研究坝体尤其是高坝蓄水初期温度应力等真实工作状态时，应充分考虑渗流的影响。 |
| 英文摘要: |
| A mathematical model by coupling the unsteady seepage with temperature field for analyzing the actual working state of concrete dams in the initial impounding period was proposed. The discrete control equation was established in the space domain and time domain by Galerkin’s method and the corresponding 3 D computational program for FEM was developed. The calculation result of an example shows that the temperature field is obviously affected by seepage field in upstream face of concrete dams during the initial impounding period and varies with time and space. It demonstrates that the effect of seepage should be carefully taken into account in the study of actual working state of dam. |
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