土木与环境工程学报（中英文）2026，Vol.48Issue(4)：170-178,9.DOI:10.11835/j.issn.2096-6717.2024.112
滑动支座磨损对斜拉桥静动力性能的影响
Effects of sliding bearing wear on the static and dynamic performance of cable-stayed bridges
摘要
Abstract
Sliding bearings represent a prevalent type of bearing in cable-stayed bridges,and are also one of the important force-transmitting components of bridges.Sliding bearings are often worn during operation,resulting in the load transfer function and the displacement and rotation deformation function being affected,and there are certain hidden dangers to the safe operation of bridges.Therefore,it is of great significance to analyze the influence of sliding bearing performance changes on the overall mechanical properties of cable-stayed bridges.Based on the finite element model of cable-stayed bridges considering bearing wear,this paper analyzes the influence of sliding bearings on the static and dynamic performance of cable-stayed bridges in different degrees of wear.Taking a cable-stayed bridge as an example,a spatial three-dimensional finite element model of a cable-stayed bridge considering sliding bearing wear and other boundary conditions is established.The displacement-friction relationship of sliding bearings during progressive wear is simulated.The modal performance,static performance and dynamic response of the cable-stayed bridge are comparatively analyzed when the sliding bearings are worn to different degrees,and the degradation law of the overall mechanical properties of the cable-stayed bridge is obtained when the sliding bearing is damaged.The findings of the study demonstrate that the occurrence of sliding bearing wear leads to an augmentation in bridge stiffness.This,in turn,results in an escalation in the frequencies of the cable-stayed bridge,especially for longitudinal drift and vertical bending modes,increases the girder end axial force significantly and reduces the cumulative bearing displacement.The bearing cannot adapt to the deformation needs of the girder,resulting in a buildup of internal forces in the girder and bearings.关键词
斜拉桥/力学性能/滑动支座/支座磨损/有限元/性能演变Key words
cable-stayed bridge/mechanical properties/sliding bearing/bearing wear/finite element model/performance evolution分类
交通工程引用本文复制引用
周鸿,李冲,杨东辉,苑洁艺,伊廷华,郭冲圆..滑动支座磨损对斜拉桥静动力性能的影响[J].土木与环境工程学报（中英文）,2026,48(4):170-178,9.基金项目
深圳市科技计划(CJGJZD20210408092601005) （CJGJZD20210408092601005）
国家自然科学基金(52322807、52478303、52438003) Shenzhen Science and Technology Program(No.CJGJZD20210408092601005) （52322807、52478303、52438003）
National Natural Science Foundation of China(Nos.52322807,52478303,52438003) （Nos.52322807,52478303,52438003）
