福州大学学报（自然科学版）2026，Vol.54Issue(3)：315-323,9.DOI:10.7631/issn.1000-2243.25152
非对称单索面独塔斜拉桥运营阶段安全性与稳定性分析
Safety and stability analysis of asymmetric cable-stayed bridge with single cable plane and single tower during operation stage
摘要
Abstract
This study takes an asymmetric cable-stayed bridges with single cable plane,single tower and a main span of 165.0 m as the research object.A refined finite element model was established to systematically analyze its structural responses,safety and stability under various load combinations during the operation stage,using current bridge design codes as evaluation indicator.The analysis results are as follows.1)The lateral bending stiffness of the main tower is significantly lower than the vertical and lateral bending stiffness of the girder,making it the weakest part.Stability analysis further confirmed that out-of-plane leftward instability of the main tower governs the global structural stability as the most unfavorable mode.2)Under serviceability limit state,the most unfavorable horizontal displacement is 0.285 m,occurring at the tower top and manifesting as out-of-plane lateral bending of the tower.The girder exhibits relatively high vertical stiffness,with a maximum vertical displacement of merely 0.124 m during serviceability limit state,well below the code limit of L/400.3)Displace-ment response induced by seismic action is lower than that under serviceability limit state and thus does not govern.关键词
斜拉桥/有限元法/荷载组合/安全性/稳定性/运营阶段Key words
cable-stayed bridge/finite element method/load combination/safety/stability/operation stage分类
交通工程引用本文复制引用
魏俊,龚科瑜,董锐..非对称单索面独塔斜拉桥运营阶段安全性与稳定性分析[J].福州大学学报（自然科学版）,2026,54(3):315-323,9.基金项目
福建省科技创新战略研究联合资助项目(2022R0154) （2022R0154）
浙江省教育厅科研资助项目(Y202250206) （Y202250206）
