2300m级超大跨钢箱梁悬索桥车辆荷载效应分析  

Analysis of Vehicle Load Effect for Super Long Span Suspension Bridge with Steel Box Girder and 2300 m-Level Main Span

作　　者：李洪涛[1] 阮欣[2] 刘高 魏祎 LI Hong-tao;Ruan Xin;LIU Gao;Wei Yi(Jiangsu Provincial Communications Engineering Construction Bureau,Nanjing 210004,China;College of Civil Engineering,Tongji University,Shanghai 200092,China;CCCC Highway Bridges National Engineering Research Centre Co.Ltd.,Beijing 100088,China)

机构地区：[1]江苏省交通工程建设局,南京市210004 [2]同济大学土木工程学院,上海市200092 [3]中交公路长大桥建设国家工程研究中心有限公司,北京市100088

出　　处：《公路》2023年第6期47-51,共5页Highway

基　　金：中国交通建设集团有限公司科技项目,项目编号YSZX-01-2021-01-B。

摘　　要：汽车荷载是超大跨径桥梁的重要活载之一,直接影响桥梁构件的承载性能和长期服役性能。现行规范中,汽车荷载主要适用于量大面广的中小跨径桥梁,对于大跨径桥梁,特别是跨径超2 000 m的桥梁,其适用性有待评估。文章以主跨2 300 m的张靖皋长江大桥为背景,研究了超大跨径桥梁结构性能以及汽车荷载效应相关问题。研究结论可为超大跨径桥梁设计荷载取值提供参考,对完善发展车辆荷载标准、提升桥梁建设效益具有重大意义。Vehicle load is one of the important live loads of super long span bridge,which directly affects the bearing performance and long-term service performance of bridge components.In the current code,vehicle load is mainly applied to small and medium span bridges which has a wide range and a large amount.For long span bridges,especially those with main span over 2 oo0 m,the applicability of code needs to be evaluated.Therefore,in this paper takes Zhangjiagang-Jingjiang-Rugao(Zhang-Jing-gao)Yangtze River Bridge with a main span of 2300 m as an example to study the structural performance of super long span bridges and related problems of vehicle load effect.The conclusions can provide references for the determination of design load value of super long span bridges,and have great significance for improving the development of vehicle load standards and the efficiency of bridge construction.

关 键 词：桥梁工程 超大跨悬索桥 结构性能 车辆荷载效应 荷载标准 

分 类 号：U441.2[建筑科学—桥梁与隧道工程] U448.25[交通运输工程—道路与铁道工程]