磁道(磁盘驱动器)
结构工程
振动
紧固件
有限元法
厚板
刚度
桥(图论)
火车
工程类
传输(电信)
声学
机械工程
电气工程
物理
医学
内科学
地图学
地理
作者
Hongye Gou,Hao Gao,Xinlin Ban,Xin Meng,Yi Bao
标识
DOI:10.1016/j.engstruct.2023.117019
摘要
This paper investigates the vibration energy transmission characteristics of high-speed train-track-bridge coupled systems based on a high-speed railway in China. A coupled system composed of a CRH380A high-speed train, CRTS II slab ballastless track, and standard 32-meter girder bridge was analyzed through hybrid simulations that integrated multi-body dynamics and finite element analysis. The hybrid model included the interactions between the train, track, and bridge of the coupled system as well as track irregularity. The vibration energy of the coupled system was quantitatively investigated under various train velocities. The effects of key variables of ballastless track and bridge on energy transmission characteristics were evaluated. The studied variables included fastener stiffness, fastener damping, mortar layer stiffness, bridge cross section, and bridge damages. The results show that these variables have significant effects on vibration energy transmission, suggesting that it is important to consider these variables in the design and operation of high-speed railways.
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