天兴洲主跨80m连续梁桥列车脱轨控制分析  

Analysis of Train Derailing Control of 80-m Main Span Continuous Girder Bridge of Tianxingzhou Bridge

作　　者：周智辉[1] 曾庆元[1] 

机构地区：[1]中南大学土木建筑学院,湖南长沙410075

出　　处：《世界桥梁》2007年第4期40-42,共3页World Bridges

基　　金：国家自然科学基金项目(50078006);铁道部科技开发计划项目(2004G028-B);教育部高等学校博士点科研基金项目(20010533004)

摘　　要：基于列车脱轨能量随机分析理论,分析天兴洲主跨80 m连续梁桥上高速列车的走行安全性。提出桥梁抗脱轨安全系数计算式,计算该桥的抗脱轨安全系数。在列车不会脱轨的条件下,分析桥上列车走行舒适性。分析结果表明:列车以300 km/h以下车速通过该桥时不会脱轨,桥梁抗脱轨安全系数很大;列车走行舒适性指标均为合格以上。研究成果为桥梁设计提供了理论依据。Based on the theory of energy random analysis of train derailing, the safety of high-speed train traveling on the 80-m main span continuous girder bridge of Tianxingzhou Bridge is analyzed, the formula of safety factors of the bridge against train derailing is proposed and the safety factors are calculated. On the assumption that the train will not derail, the riding comfort on the traveling train is further analyzed. The results of analysis indicate that the derailing will not occur when a train travels through the bridge at a speed less than 300 km/h. The safety fac- tors of the bridge are very great, the riding comfort is qualified and the research findings in the paper can provide theoretic basis for the design of the bridge.

关 键 词：高速列车 脱轨控制 安全系数 能量随机分析 

分 类 号：U448.13[建筑科学—桥梁与隧道工程] U447[交通运输工程—道路与铁道工程]