High-speed train–track–bridge dynamic interactions – Part I: theoretical model and numerical simulation
High-speed train–track–bridge dynamic interactions – Part I: theoretical model and numerical simulation
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DOI：
10.1080/23248378.2013.791498
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发表时间：
2013-04
影响因子：
4
通讯作者：
W. Zhai;H. Xia;C. Cai;M. Gao;Xiaozhen Li;Xiangrong Guo;N. Zhang;Kaiyun Wang
中科院分区：
文献类型：
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作者：
W. Zhai;H. Xia;C. Cai;M. Gao;Xiaozhen Li;Xiangrong Guo;N. Zhang;Kaiyun Wang
本文提出了一个系统研究高速列车-轨道-桥梁动力相互作用的框架，旨在为分析和评估列车通过桥梁的运行安全性和平顺性提供一种方法，这对高速铁路新桥梁的设计至关重要。阐述了列车-轨道-桥梁相互作用机理。建立了列车-轨道-桥梁动力相互作用分析的基本模型，其中车辆子系统与轨道子系统通过轮轨空间相互作用模型耦合，轨道子系统与桥梁子系统通过轨道-桥梁动力相互作用模型耦合。给出了各子系统的建模方法和各子系统之间的交互关系。采用显-隐式积分法在时域内数值求解非线性动力学大系统的运动方程。开发了列车-轨道-桥梁相互作用仿真软件（TTBSIM），用于预测列车-轨道-桥梁耦合系统的垂向和横向动力响应。
This paper presents a framework to systematically investigate the high-speed train–track–bridge dynamic interactions, aiming to provide a method for analysing and assessing the running safety and the ride comfort of trains passing through bridges, which are critically important for the design of new high-speed railway bridges. Train–track–bridge interactive mechanism is illustrated. A fundamental model is established for analysing the train–track–bridge dynamic interactions, in which the vehicle subsystem is coupled with the track subsystem through a spatially interacted wheel–rail model; and the track subsystem is coupled with the bridge subsystem by a track–bridge dynamic interaction model. Modelling of each subsystem and each interactive relationship between subsystems are presented. An explicit–implicit integration scheme is adopted to numerically solve the equations of motion of the large non-linear dynamic system in the time domain. Computer simulation software named the train–track–bridge interaction simulation software (TTBSIM) is developed to predict the vertical and lateral dynamic responses of the train–track–bridge coupled system.