新型钢板组合梁桥车桥耦合振动分析  

Vehicle-bridge Coupled Vibration Analysis of New Steel Plate Composite Girder Bridge

作　　者：夏飞龙 吴肖波 王胜斌[1,2] 柴小鹏 XIA Fei-long;WU Xiao-bo;WANG Sheng-bin;CHAI Xiao-peng(Anhui Transport Consulting & Design Institute Co.,Ltd.,Hefei,Anhui,230000;Transportation Industry R&D Center for Highway Transportation Energy Conservation and Environmental Protection Technology,Hefei,Anhui,230000;China Railway Major Bridge Science Research Institute Co.,Ltd.,Wuhan,Hubei,430034;State Key Laboratory of Bridge Structure Health and Safety,Wuhan,Hubei,430034)

机构地区：[1]安徽省交通规划设计研究总院股份有限公司,安徽合肥230000 [2]公路交通节能环保技术交通运输行业研发中心,安徽合肥230000 [3]中铁大桥科学研究院有限公司,湖北武汉430034 [4]桥梁结构健康与安全国家重点实验室,湖北武汉430034

出　　处：《西部交通科技》2019年第2期110-114,共5页Western China Communications Science & Technology

摘　　要：为研究新型钢板组合梁桥车桥耦合振动特性及行车舒适性,文章对某高速公路上典型的新型钢板组合梁桥进行跑车数值模拟,基于车轮与桥面接触点位移协调关系进行了车桥耦合振动分析,研究了路面不平整度、车速和阻尼比对桥梁的挠度、冲击系数和行车舒适度的影响。研究结果表明:该桥行车舒适性评价满足规范要求,行车速度对桥梁结构响应影响不大,路面不平整度越小和阻尼比越大,结构响应和冲击系数越小。In order to study the vehicle-bridge coupled vibration characteristics and driving comfort of new steel plate composite girder bridge,this article conducts the sportscar numerical simulation for typical new steel plate composite girder bridge on an expressway,performs the vehicle-bridge coupled vibration analysis based on the coordination relationship between the wheel and the bridge contact point displacement,and studies the effects of pavement roughness,driving speed and damping ratio on the deflection,impact coefficient and driving comfort of the bridge.The research results show that the driving comfort evaluation of this bridge meets the requirements of the code,and the driving speed has little effect on the response of bridge structure.The smaller the roughness of pavement and the larger the damping ratio,the smaller the structural response and impact coefficient.

关 键 词：钢板组合梁桥 车桥耦合振动 数值模拟 冲击系数 舒适度 

分 类 号：U448.216[建筑科学—桥梁与隧道工程]