西沙门大桥抗风稳定性数值模拟研究  

Numerical Simulation Study on Wind Resistance Stability of Xishamen Bridge

作　　者：雷琛 张科乾 潘子超[1] LEI Chen;ZHANG Keqian;PAN Zichao

机构地区：[1]同济大学,上海200092 [2]同济大学建筑设计研究院(集团)有限公司,上海200092

出　　处：《上海公路》2025年第1期97-101,M0006,共6页Shanghai Highways

摘　　要：以西沙门大桥为研究对象,针对其所在地区高风速的特殊场景,利用数值模拟,评估该桥在极端风况下的抗风稳定性表现。首先,概述了桥梁抗风稳定性分析的研究现状;其次,通过建立有限元模型及CFD风洞模拟试验,提取了桥梁相关的动力特性与+3°、0°和-3°三个风攻角下的三分力系数;最后,依据《公路桥梁抗风设计规范》(JTG/T 3360-01-2018),计算该桥在不同风攻角下的稳定性表现。结果表明,在研究范围内,西沙门大桥在各种风况下的抗风性能均符合规范要求。Focusing on the Xishamen Bridge,a numerical simulation was used to evaluate its wind resistance stability under extreme wind conditions specific to its high-wind region.Firstly,a review of the current state of research on bridge wind resistance stability analysis is presented.Secondly,based on that,a finite element model and CFD wind tunnel simulations were established to extract the dynamic characteristics of the bridge and the three force coefficients at wind attack angles of+3°,0°,and-3°.Finally,according to the"Specifications for Wind Resistance Design of Highway Bridges"(JTG/T 3360-01-2018),the stability performance of the bridge under different wind attack angles was calculated.The results indicate that within the research scope,the wind resistance performance of the Xishamen Bridge meets the specifications under various wind conditions.

关 键 词：西沙门大桥 颤振稳定性 静风稳定性 数值模拟 

分 类 号：U44[建筑科学—桥梁与隧道工程]