中外公路2026，Vol.46Issue(4)：194-201,8.DOI:10.14048/j.issn.1671-2579.2026.04.021
OpenSeesPy融合信赖域优化算法的斜拉桥索力优化方法
Method for optimizing cable forces of cable-stayed bridges by integrating OpenSeesPy with trust-region optimization algorithm
摘要
Abstract
Cable force optimization is a key step in ensuring a rational force state of cable-stayed bridge structures.To address the repeated iterations,complicated adjustment procedures,and low computational efficiency associated with cable force optimization using traditional finite element software,this paper combined Python with the OpenSeesPy open-source library to establish a finite element model of a cable-stayed bridge that accounted for the construction process.A trust-region optimization algorithm was adopted to minimize structural bending energy,and a method was proposed for automatically optimizing cable forces during construction and in the completed bridge.The effectiveness and applicability of the proposed method were verified through a case study of the Wuxuan Qianjiang Grand Bridge,the largest-span cable-stayed bridge in Guangxi.The results indicate that the optimized cable force distribution is reasonable,and that the variations in deformation and internal forces during bridge construction remain within controllable limits,thus ensuring the structural safety and stability of the bridge at all construction stages.The research results provide a new optimization-based computational technique for the design and construction of cable-stayed bridges.关键词
斜拉桥/索力优化/OpenSeesPy/最小弯曲能量法/信赖域优化算法Key words
cable-stayed bridge/cable force optimization/OpenSeesPy/minimum bending energy method/trust-region optimization algorithm分类
交通工程引用本文复制引用
张才,胡家锴,唐睿楷..OpenSeesPy融合信赖域优化算法的斜拉桥索力优化方法[J].中外公路,2026,46(4):194-201,8.基金项目
广西科技重大专项(编号:桂科AA23062022) （编号:桂科AA23062022）
交通运输行业重点科技项目(编号:2022ZD6085) （编号:2022ZD6085）
广西科技重点研发计划项目(编号:桂科AB23026101) （编号:桂科AB23026101）
