| 摘要: |
| 利用通用的商业有限元软件Marc与Fortran语言的接口，并运用Marc的“死活单元”技术和网格加密技术，编制了混凝土坝渗流场的正分析程序．在此基础上，利用某混凝土宽缝重力坝的坝基扬压力测压管的水位观测资料，采用改进的遗传算法进化反演混凝土坝与坝基的渗透系数．算例表明，采用遗传算法-Marc反演混凝土坝的渗透系数是可行的，且计算效率较传统计算方法要高． |
| 关键词: 混凝土坝 坝基 宽缝重力坝 测压管 渗透系数 扬压力 渗流场 网格加密 基础 反演 |
| DOI： |
| 分类号:TV642 TV698 |
| 基金项目:国家自然科学基金重点项目(50139030)，国家 973项目(2002CB412707) |
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| Inverse analysis on permeability coefficients of concrete dam body and foundation based on Marc |
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FU Zhi-min,XIANG Yan,ZHOU Zhi-fang
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| Abstract: |
| A new seepage analysis program for concrete dams is developed with the help of the interface between Marc, a commercial finite element software, and Fortran, including the techniques of inactive/active element and local closing element. According to the observed data of uplift piezometric water head, the permeability coefficients of a concrete gravity dam body and its foundation are inversed by a developed genetic algorithm. Calculation results show that the approach of inverse analysis on the permeability coefficients of a concrete dam is feasible and efficient. |
| Key words: genetic algorithm,inverse analysis,permeability coefficient,concrete dam |
