组合梁斜拉桥稳定性分析  

Stability analysis of composite beam cable-stayed bridge

作　　者：荆华东 Jing Huadong(Shandong Road and Bridge Group Co.,Ltd.,Jinan Shandong 250014,China)

机构地区：[1]山东省路桥集团有限公司,山东济南250014

出　　处：《山西建筑》2025年第2期166-168,共3页Shanxi Architecture

摘　　要：以一座组合梁斜拉桥为工程背景,采用有限元数值方法进行线弹性稳定分析。研究了裸塔状态、张拉一半拉索状态以及成桥运营状态下结构的稳定性,分析了施工线形误差对成桥运营状态稳定性的影响。结果表明,桥梁的稳定性满足规范要求,桥塔施工误差对成桥运营状态线弹性稳定安全系数影响较小。Taking a composite beam cable-stayed bridge as the engineering background,uses the finite element numerical method to performe the linear elastic stability analysis.The bare tower state,the tension-half cable state and the operation state of the completed bridge was studied.Analyzed the impact of construction line errors on the stability of bridge operation status.The results show that the stability of the bridge meets the requirements of the code,and the tower construction error has little influence on the safety factor of the linear elastic stability of the completed bridge.

关 键 词：组合梁斜拉桥 稳定性 屈曲模态 数值模拟 

分 类 号：TU997[建筑科学—市政工程] U444[建筑科学—桥梁与隧道工程]