列车-轨道振源的理论分析模型研究综述

A Review on Theoretical Analysis Models of Vehicle-Track Vibration Source

在考察地铁列车引起周围环境振动的问题时,一般把列车-轨道看作振源并单独研究,轨道底部反力则作为输入作用在结构上。文章将振源理论模型分成了列车和轨道两部分进行介绍,其中列车模型包括:移动质量模型、函数模拟法、车体轮对模型、车体-转向架-轮对模型以及整车模型,同时对每种方法的基本原理和步骤进行了阐述;轨道模型从钢轨类型、轨底支撑类型以及计算长度的模拟方法进行了介绍,表明Timoshenko梁和离散型支撑更加符合实际情况。

The vehicle-track system is usually viewed as vibration source and studied separately for the subway-induced environmental vibration, since the track bottom force corresponds to load input on the surrounding structure. This paper introduces the theoretical models of vibration source in terms of vehicle models and track models, where the vehicle models include： moving mass model, simulation function model, train-wheelset model, train-wheel-bogie model and overall train model; basic principle and solving steps of each model is presented as well. For the track models, this paper introduces the simulation methods with respect to rail models, sleeper models and calculation length of the rail, and it is concluded that Timoshenko beam and discrete support model conform to reality better.