郑州大学学报（理学版）2013，Vol.45Issue(2)：115-120,6.DOI:10.3969/j.issn/1671-6841.2013.02.025
大跨度公路斜拉桥车桥耦合振动竖向响应分析
Analysis on Vertical Responses of Vehicle-bridge Coupling Vibration of Highway Cable-stayed Bridge with Long Span
李武生 1王贵春 1陈卫丽 1张校卫1
作者信息
- 1. 郑州大学土木工程学院 河南郑州450001
- 折叠
摘要
Abstract
On the platform of numerical analysis software named MATLAB,road surface roughness was simulated as stationary random process with ergodicity by trigonometric series method.The finite element analysis model of highway cable-stayed bridge with long span was established with finite element method,and a vehiele was imitated as a mass-spring-damp system with five DOFs.Vibration differential equations of vehicle and bridge were established respectively and coupled by compatibility of displacement and equilibrium of force.Newmark-β method and APDL command stream compiled for iterative computations were used to analyze the dynamic response of Changrnen bridge with long span of 550 m.The calculation results indicated that dynamic responses of bridge structure increased when road surface roughness became worse,chiefly linearly decreased when structural damping ratio increased,and first quickly increased and then slowly decreased when vehicle weight increased.关键词
斜拉桥/有限元法/桥面不平顺/车桥耦合振动Key words
cable-stayed bridge/finite element method/road surface roughness/vehicle-bridge coupling vibration分类
交通工程引用本文复制引用
李武生,王贵春,陈卫丽,张校卫..大跨度公路斜拉桥车桥耦合振动竖向响应分析[J].郑州大学学报（理学版）,2013,45(2):115-120,6.
