论文部分内容阅读
通过引入新的交叉和变异算子,改进遗传算法。隔代映射遗传算法将种群分为多个子群,通过个体迁移、加强多元性及求较优解确定不同种群之间的联系。将新算子引入隔代映射遗传算法中,并采用此算法,按AISC-ASD规范规定,对钢框架进行最小重量优化设计。通过对某3跨3层钢框架和5跨22层特殊钢框架的优化设计,验证了本方法的有效性。对优化求解方法做了重要改进,减少了有限元分析计算量。
Improve genetic algorithm by introducing new crossover and mutation operators. Inter-generation mapping genetic algorithm divides the population into multiple subgroups, and determines the connection among different populations through individual migration, strengthening diversity and finding the optimal solution. The new operator is introduced into the permutation mapping genetic algorithm. Based on the algorithm of AISC-ASD, the minimum weight of the steel frame is optimized. Through the optimization design of a 3-span 3-story steel frame and 5-span 22-story special steel frame, the effectiveness of this method is verified. The optimized solution method has been greatly improved, reducing the amount of finite element analysis.