北京建筑大学学报2025，Vol.41Issue(1)：106-113,8.DOI:10.19740/j.2096-9872.2025.01.12
基于桥跨索单元等效刚度非线性位移法的悬索桥空缆线形计算及软件开发
Software Development and Computation of Shape-Founding for Suspension Bridges at Free Cable State Based on Nonlinear Displacement Method with Effective Stiffness of Whole Span of Cable Elements
摘要
Abstract
Based on the core equations of the relationship of line shape to force,according to the tangient stiff matrix,the process and algorithm for geometric nonliear analysis of suspension bridges and the professional software of shape-founding for analysis of both earth-anchored and self-anchored suspension bridges have been developed.To solve the pre-bias of cable saddle and shape of self-weight cable,the nonlinear displacement method with the effective stiffness of whole span on the principle of constant free-stress cable length has been decuded,thus pre-bias of cable saddle of serval towers can be solved simultaniously without need of backword analysis.Result from analysis using the software shows that the solution by the segmental catenary of earth-anchored suspension bridge corresponds with that by geometric nonliear forward analysis design process,and the solution of self-anchored suspension bridge correspends with that by ANSYS during design process.关键词
悬索桥/空缆线形/索鞍预偏量/分段悬链线/索单元/软件开发Key words
suspension bridge/line shape of free cable state/pre-bias of cable saddle/segmental catenary/cable element/software development分类
交通工程引用本文复制引用
阴存欣,秦大航..基于桥跨索单元等效刚度非线性位移法的悬索桥空缆线形计算及软件开发[J].北京建筑大学学报,2025,41(1):106-113,8.基金项目
北京市市政工程设计研究总院有限公司科研计划项目(2023-KYQL-032). （2023-KYQL-032）
