土木工程与管理学报2025，Vol.42Issue(2)：39-48,10.DOI:10.13579/j.cnki.2095-0985.2025.20240263
斜拉桥主梁与拉索的损伤特性
Damage Characteristics of Main Girder and Cable of Cable-stayed Bridge
摘要
Abstract
In this paper,by simplifying the interaction force model between the cable and the main girder and using Mathematica to carry out the superstatic solution,the theoretical formulas for the change values of cable force,main girder displacement and main girder stress under the two conditions of main girder damage and cable damage are obtained.It is analyzed that the change values of the indexes are directly proportional to the homogeneous load(deadweight),and the relationship with the other variables is complicated.The theoretical formulas are applied to examples and verified by finite element simulation calculations:in terms of the change pattern,the change of each index with the degree of damage is close to linear under the damage condition of the cable,and the change of each index with the degree of damage under the damage condition of the main girder is nonlinear.In terms of change value,under the same damage degree,the change value of each index under the cable damage condition is much larger than that under the main girder damage condition,especially the cable force and main girder deflection.The analysis results can be used for the comprehensive as-sessment and damage identification of cable-stayed bridge.关键词
斜拉桥/拉索/主梁/损伤Key words
cable-stayed bridge/cable/main girder/damage分类
交通工程引用本文复制引用
唐海淘,吴海军,杨孝祥,刘川..斜拉桥主梁与拉索的损伤特性[J].土木工程与管理学报,2025,42(2):39-48,10.基金项目
重庆市交通科技项目(2022-01) （2022-01）
