基于遗传算法的道路安定极限优化求解方法  

Optimal calculation method of pavement shakedown limit based on genetic algorithm

作　　者：宋修广 张营超 庄培芝 杨鹤 张海凤 王娟[3] SONG Xiuguang;ZHANG Yingchao;ZHUANG Peizhi;YANG He;ZHANG Haifeng;WANG Juan(School of Qilu Transportation,Shandong University,Jinan 250002,Shandong,China;Lunan High-Speed Railway Co.,Ltd.,Jinan 250102,Shandong,China;The University of Nottingham Ningbo,Ningbo 315100,Zhejiang,China)

机构地区：[1]山东大学齐鲁交通学院,山东济南250002 [2]鲁南高速铁路有限公司,山东济南250102 [3]宁波诺丁汉大学,浙江宁波315100

出　　处：《山东大学学报（工学版）》2021年第5期1-7,共7页Journal of Shandong University（Engineering Science）

摘　　要：为解决长期往复车辆荷载作用下道路结构易产生弹塑性变形的问题,基于静力安定定理研究Hertz荷载作用下半无限空间Mohr-Coulomb结构的安定行为,引入遗传算法构建往复车辆荷载作用下道路结构安定极限下限值的高效计算方法。通过与现有求解方法进行对比和参数分析,验证了新方法的准确性,计算过程在10 s内完成。To solve the problem that road structures are prone to elasto-plastic deformation under the action of long-term reciprocating vehicle loads, based on the static shakedown theorem, the shakedown behavior of the semi-infinite space Mohr-Coulomb structure under the Hertz load was studied, and the genetic algorithm was introduced to construct an efficient calculation method for the lower limit of the shakedown limit of the road structure under the reciprocating vehicle load. The accuracy and efficiency of the new method was verified by comparison with the existing solution method and parameter analysis.

关 键 词：道路结构 遗传算法 安定极限 弹塑性分析 安定理论 

分 类 号：U416[交通运输工程—道路与铁道工程]