高速列车-连续刚架桥系统地震反应分析  

Seismic Responses Analysis for a System of High-speed Train and Continuous Rigid-Frame Bridge

作　　者：马坤全[1] 朱金龙[1] 

机构地区：[1]上海铁道大学土木工程系

出　　处：《上海铁道大学学报》1998年第10期29-36,共8页

摘　　要：将高速列车－连续刚架桥视为一整体振动系统。采用随机振动理论，计算机模拟了高速列车通过刚构式高架桥的全过程，与国外实测资料相比较，结果吻合较好；分析了高速列车与连续刚构桥系统横向地震反应，讨论发生地震时，高速列车在桥上运行安全性。研究结果表明，由于地震作用，车桥系统动力响应值显著增加，列车运行安全性亦大大下降。In this paper,the high speed train and the continuous rigid-frame bridge are considered as a whole vibration system.According to the random vibration theory,the dynamic responses are calculated when the train runs through the continuous rigid-frame bridge at high speed.The results are in satisfactory agreement with other country's test data.On the basis of above,the lateral seismic responses of the vibration system of the high speed train and the continuous rigid-frame bridge are analysed.Moreover,the safety degree of the train running through the bridge at high speed when the earthquake is happening is discussed.The result of the research indicates that as the result of the earthquake effect,the system dynamic responses of the high speed train and the continuous rigid-frame bridge are enhanced strikingly and the safety degree when the train runs through the bridge is obviously lowered down.

关 键 词：高速列车 连续刚架桥 地震 横向振动 铁路桥 

分 类 号：U448.131.3[建筑科学—桥梁与隧道工程] U448.281.3[交通运输工程—道路与铁道工程]