基于Marc的混凝土坝与坝基渗透系数反演

基金项目:

国家自然科学基金重点项目(50139030)，国家 973项目(2002CB412707)

详细信息

Inverse analysis on permeability coefficients of concrete dam body and foundation based on Marc

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．
- 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
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.
- genetic algorithm,inverse analysis,permeability coefficient,concrete dam