兰州理工大学学报

兰州理工大学学报 ›› 2024, Vol. 50 ›› Issue (4): 142-146.

• 建筑科学 • 上一篇    下一篇

方钢管混凝土桁架结构优化的拟满内力遗传算法

谢军*1,2, 郭飞1, 郭卫彤1, 阎杰1, 王贺贺1, 杨永竹1   

  1. 1.河北建筑工程学院 土木工程学院, 河北 张家口 075000;
    2.河北省寒冷地区交通基础设施工程技术创新中心, 河北 张家口 075000
  • 收稿日期:2021-10-20 出版日期:2024-08-28 发布日期:2024-08-30
  • 通讯作者: 谢 军(1979-),男,辽宁营口人,博士,教授.Email:xiejun79@hebiace.edu.cn
  • 基金资助:
    河北省自然基金(E2018404047),张家口市科技重点研发计划“碳达峰、碳中和”创新专项(2322145D)

Imitative full internal force genetic algorithm for structural optimization of concrete-filled square steel tubular truss

XIE Jun1,2, GUO Fei1, GUO Wei-tong1, YAN Jie1, WANG He-he1, YANG Yong-zhu1   

  1. 1. School of Civil Engineering, Hebei University of Architecture, Zhangjiakou 075000, China;
    2. Hebei Innovation Center of Transportation Infrastructure in Cold Region, Zhangjiakou 075000, China
  • Received:2021-10-20 Online:2024-08-28 Published:2024-08-30

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摘要： 为解决离散变量方钢管混凝土桁架的结构优化问题,以桁架杆件最低总造价为目标函数,采用拟满内力遗传算法对杆件截面进行结构尺寸优化.拟满内力遗传算法引入拟满内力算法作为遗传算子,并将部分初始种群由拟满内力算法产生以增加种群多样性.对传统遗传算法罚函数进行改进,以增强算法的寻优效率.通过两个算例的对比分析,结果表明运用拟满内力遗传算法进行方钢管混凝土桁架结构优化,相对于拟满内力算法和传统遗传算法其造价分别降低了15%、15%、45%、53%.拟满内力遗传算法进行方钢管混凝土桁架结构优化的是有效、可行的.

关键词: 方钢管混凝土, 桁架, 拟满内力算法, 结构优化, 混合遗传算法

Abstract: To address the structural optimization problem of concrete-filled square steel tubular truss with discrete variables, the imitative full internal force genetic algorithm was used to optimize the structural size of the member section aimed at minimizing the total cost of truss member. The imitative full internal force algorithm was introduced into the imitative full internal force genetic algorithm as an operator, and some initial populations were generated by the imitative full internal force algorithm to increase population diversity. Meanwhile, the penalty function of the traditional genetic algorithm was improved to enhance the optimization efficiency of the algorithm. Comparative analysis of two case studies demonstrates that the cost of the square steel tube concrete truss structure is reduced by 15%, 15% and 45%, 53% respectively by using the imitative full internal force genetic algorithm compared with the imitative full internal force algorithm and the traditional genetic algorithm. It is effective and feasible of the imitative full internal force genetic algorithm for optimizing the concrete-filled square steel tubular truss.

Key words: concrete-filled square steel tubular, truss, imitative full internal force algorithm, structural optimization, hybrid genetic algorithm

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