铁道科学与工程学报2016，Vol.13Issue(3)：493-499,7.
基于车桥耦合的钢管混凝土拱桥车桥冲击系数研究
Research on the impact coefficientof the concrete filled steel tube arch bridge based on the vehicle -bridge coupled vibration
摘要
Abstract
The three -dimensional finite element model of CFST arch bridge based on the software ANSYS was built and the dynamic characteristics of the structure were analyzed.Based on the vehicle -bridge coupled vibra-tion model under the action of the two axle vehicle model,the self -made program for the vehicle -bridge cou-pled vibration analysiswas applied to calculate and analyze the effect of moving vehicles on the dynamic response of the CFST arch bridge considering the different the pavement roughness,different driving speed,different vehi-cle numbers and different driving distance of vehicle.Then,the impact coefficient of CFST arch bridge was cal-culated based on the vehicle -bridge coupled vibration.The research results show that the pavement roughness, driving speed of vehicle,the number of vehicles and the driving distance of vehicles have some effect on the im-pact coefficient of the CFST arch bridge.The conclusion obtained can provide a reference for the impact coeffi-cient evaluation of CFST arch bridges at the design stage and the determining load effect for the bridge mainte-nance at the service stage.关键词
钢管混凝土拱桥/车桥耦合振动/有限元模型/冲击系数Key words
CFST arch bridge/vehicle -bridge coupled vibration/finite element model/impact coefficient分类
交通工程引用本文复制引用
韩艳,李浩,薛繁荣..基于车桥耦合的钢管混凝土拱桥车桥冲击系数研究[J].铁道科学与工程学报,2016,13(3):493-499,7.基金项目
国家自然科学基金资助项目 （）
