【摘要】 为了实现土石坝的截面优化,基于坝体边坡极限平衡状态提出了一种易于施加特性约束条件和进行全局优化搜索的优化遗传算法.建立了以边坡稳定为约束条件的多工况条件下的土石坝截面优化模型,并在Matlab平台上编制了基于极限平衡理论的土石坝坝坡稳定性分析程序以及优化程序,实现了均质土坝在渗流和地震作用等约束下最优截面的搜索.算例结果证明了该优化方法具有一定的有效性和可行性.更多还原

【Abstract】 In order to realize the sectional optimization of earth-rockfill dam( ERD),an optimization genetic algorithm( GA),which could easily impose the characteristic constraint condition and perform the global optimization search,was proposed based on the limit equilibrium state of dam slope. A sectional optimization model for ERD under different operating conditions with taking the slope stability as the constraint condition was established. The analysis and optimization programs for the slope stability of ERD based on the limit equilibrium state were compiled on the M atlab platform. The search of optimum section of homogeneous ERD under such constraints as earthquake and seepage can be realized. Furthermore,the effectiveness and reliability of the proposed algorithm is proved with the practical example.更多还原