柔性塔斜拉桥成桥状态拱塔损伤参数敏感性分析  

Sensitivity Analysis of Damage Parameters of Flexible Tower Arch Bearing Cable-stayed Bridge in Bridge Formation Condition

作　　者：徐步齐 XU Buqi(China Railway 12th Bureau Group 7th Engineering Co.,Ltd.,Changsha Hunan 410004,China)

机构地区：[1]中铁十二局集团第七工程有限公司,湖南长沙410004

出　　处：《交通节能与环保》2025年第2期224-229,共6页Transport Energy Conservation & Environmental Protection

摘　　要：为探索以钢材为材质的柔性塔拱承式斜拉桥在成桥运营使用中的拱塔损伤问题,本文研究了主塔双侧塔根、桥塔一侧中部、桥塔顶部不同损伤状态下主梁的一阶模态曲率、挠度、拉索索力以及主塔自身位移等关键参数的变化规律。结果表明:柔性塔拱承式斜拉桥的拱塔为易损敏感构件;斜拉桥主梁模态变化、索力损伤、桥塔横向位移可作为桥塔一侧中部损伤监测指标;主梁挠度变化可作为识别桥塔损伤位置距离塔根距离远近的指标。In order to study the damage problem of flexible tower arch-bearing cable-stayed bridge made of steel in the operation of the bridge,changed rules of the first-order modal curvature of the main girder,deflection,cable force,and the key parameters such as the displacement of the main tower itself are researched through the study of the first-order modal curvature,deflection,and the displacement of the main girder in the main tower under the different damage states of the root of the main towers,the middle of the tower side,and the top of the tower.The results show that flexible tower arch bearing cable-stayed bridge’s arch tower is a vulnerable and sensitive member;cable-stayed bridge main girder modal change,cable force damage,transverse displacement of the bridge tower can be used as a monitoring index of damage in the middle of the tower;main girder deflection change can be used as an index to identify the damage location of the bridge tower from the tower root distance.

关 键 词：柔性塔 拱承式斜拉桥 损伤状态 敏感性分析 力学参数 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]