黄冀卓¹，  王  湛²，  龚明袖¹
（1 汕头大学土木工程系，汕头515063；2 华南理工大学土木工程系，广州510641）

[摘要]  针对结构优化问题的强离散性和遗传算法求解离散变量优化问题的有效性，将遗传算法应用于钢结构优化问题的求解。针对简单遗传算法的早熟缺陷进行了改进，并将改进后的遗传算法应用于钢结构的优化设计中。基于改进遗传算法和《钢结构设计规范》（GB50017 -2003）开发了钢结构优化设计工具箱。算例表明，软件具有简单、快速、有效等优点。
[关键词]  遗传算法；钢结构；优化设计；离散变量

    Optimum design of steel structure using a genetic algorithm and development of corresponding optimun design softvare
    Huang Jizhuo¹, Wang Zhan², Gong Mingxiu¹
    (1 Shantou University ,Shantou 515063 ,China; 2 South China University of Technology ,GuangZhou 510641 ,China)

Abstract: Considering the discreteness of the structural optimum problems and the feasibility of genetic algorithm in solving discrete variable problems, a genetic algorithm method is applied to the optimization design of steel structures. An impmved genetic algorithm is presented and applied to the optimization design of steel structures. A software of optimum design toolbox of steel structures is developed, which is based on the improved genetic algorithm and the Code for Design of Steel Structutes (GB50017 -2003). An example demonstrated the convenience and the effectiveness of the optimum desigp software in the optimal desigp of steel structures.
Keywords: genetic algorithm; steel structure; optimum design; discrete variable