车桥系统耦合振动分析的数值解法  

COUPLING VIBRATION ANALYSIS OF VEHICLE-BRIDGE SYSTEM BY ITERATIVE SOLUTION METHOD

作　　者：李小珍[1] 马文彬[2] 强士中[1] 

机构地区：[1]西南交通大学土木工程学院,成都610031 [2]杭州市交通工程集团有限公司,杭州310008

出　　处：《振动与冲击》2002年第3期21-25,共5页Journal of Vibration and Shock

基　　金："九五"国家重点科技攻关计划专题 (95_41 1_0 2_0 1 );铁道部科技发展计划项目 (96G35_A_0 5;97G47_0 2 ;99G1 6)资助

摘　　要：将整个车桥系统划分为车辆与桥梁两个子系统 ,采用分离的车辆和桥梁运动方程 ,提出了车桥系统耦合振动分析的数值解法 ,该法以车轮与桥面钢轨之间位移协调作为收敛条件 ,在每一时间步长内运用了Newmark -β积分格式。并运用所编制的程序对京沪高速铁路南京越江桥三塔PC箱钢桁叠合主梁斜拉桥方案的车桥动力响应进行了分析 。Consisting in dividing the whole vehicle-bridge system into 2 subsystems at the interface of the vehicles and the bridge,establishing the equations of motion for the bridge and the vehicles respectively,an iteration solution method is presented to analyse the coupling vibration response of vehicle-bridge system. These 2 subsystems are solved separately,their displacement compatibility at the interface is achieved by an iterative procedure with Aitken acceleration.The Newmark method is used for solving the motion equations.Finally,a computer program is organized and used to analyse the dynamic responses of the bridge in the design project of the Yangtze-River bridge at Nanjing for Beijing-Shanghai high-speed railway.Numerical results are given to demonstrate the validity and the effectiveness of the proposed method.

关 键 词：车桥系统 耦合振动 数值解法 迭代求解 桥梁 振动控制 列车 铁路 

分 类 号：U441.3[建筑科学—桥梁与隧道工程]