辽宁工程技术大学学报（自然科学版）2024，Vol.43Issue(2)：187-194,8.DOI:10.11956/j.issn.1008-0562.2024.02.009
断索对钢-混组合梁斜拉桥力学性能的影响
Influence of cable breaking on mechanical properties of steel-concrete composite girder cable-stayed bridge
摘要
Abstract
In order to study the effect of cable breakage on the mechanical performance of steel-hybrid cable-stayed bridges,a steel-hybrid cable-stayed bridge under construction was used as the engineering background,and a finite element simulation model was established by using MIDAS/Civil.Firstly,the parameters of the model were compared with the design values and the field measured values to verify the rationality of the finite element model.Then,the changes of main beam line,cable force and tower displacement were analyzed after different locations and numbers of broken cables.The results show that the effect of side span breakage on main beam deflection and tower displacement is greater than that of main span breakage,and the effect of main span breakage on cable force is greater than that of side span breakage;the effect of long cable breakage on main beam line,cable force and tower displacement is the greatest;when the cable breaks symmetrically along the span of main beam,the line of main beam,cable force and tower displacement show symmetrical changes,and when two pairs of cables break,the cable force of the whole bridge is in accordance with the superposition principle.The whole bridge force is in accordance with the superposition principle when two pairs of cables break.关键词
钢-混组合梁斜拉桥/力学性能/拉索断裂/边跨断索/主跨断索Key words
steel-concrete composite girder cable-stayed bridge/mechanical properties/cable breakage/side span breakage/main span breakage分类
交通工程引用本文复制引用
刘耀东,李文涛,王克兵..断索对钢-混组合梁斜拉桥力学性能的影响[J].辽宁工程技术大学学报（自然科学版）,2024,43(2):187-194,8.基金项目
国家自然科学基金项目(51708188) （51708188）
湖北省教育厅研究生教学改革研究项目(校2021026) （校2021026）
示范性产教融合专业学位研究生联合培养基地建设项目资助(校2022054) （校2022054）
