高速铁路铰接式列车车桥系统动力响应分析

DYNAMIC ANALYSIS OF BRIDGE-ARTICULATED HIGH SPEED TRAIN SYSTEM

根据铰接式车辆结构和悬挂形式的特点,建立了铰接车辆单元模型,以现有通用软件为基础直接生成桥梁模型的质量、刚度矩阵,并以实测轨道不平顺为系统激励,求解车桥耦合动力相互作用问题;以欧洲布鲁塞尔-巴黎高速铁路线上的Thalys铰接式列车通过Antoing桥为例,分析了桥梁的动挠度、竖向和横向加速度等动力响应及运行车辆的振动加速度响应,并对铰接式列车的振动特性进行了初步的探讨;最后通过现场试验对分析模型和计算结果进行了验证。

The dynamic interaction between bridge and articulated high speed train is studied in this paper. A dynamic interaction model of the bridge-articulated train system is established, which is composed of a spatial articulated vehicle element model and a finite element bridge model. The vehicle element model is established according to the vehicle structure and the bogie suspension system of the articulated high speed train, while the total mass and stiffness matrices of the bridge model are directly generated from general structure analysis program and the site-measured rail irregularity is taken as the system excitation. As an example, the case of the Thalys articulated train passing through the Antoing Bridge on the Paris-Brussels high speed railway line is analyzed by computer simulation. The dynamic responses such as the deflections, vertical and lateral accelerations of the bridge and the accelerations of the running vehicles are calculated. The vibration properties of the articulated trains are discussed. The proposed analysis model and the solution method are verified through the comparison between the calculated results and the field experimental data.