Vibrations induced by HST passage on ballast and non-ballast tracks
Vibrations induced by HST passage on ballast and non-ballast tracks
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DOI：
10.1016/j.soildyn.2010.02.004
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发表时间：
2010-09-01
影响因子：
4
通讯作者：
Dominguez, J.
中科院分区：
文献类型：
--
作者：
Galvin, P.;Romero, A.;Dominguez, J.
无碴板式轨道在高速铁路中的应用越来越广泛。这种发展是由于有碴轨道在结构和运营方面的一些优势。此外，浮置板轨道可用于控制地面和地下轨道交通系统产生的地面振动。本文采用一个通用的、全三维的多体有限元-边界元模型，研究了有碴轨道和无碴轨道上列车通过引起的振动。车辆被建模为多体系统，轨道，在这两种情况下，使用有限元和土壤表示使用边界元素。三个组成部分的负载被认为是准静态的激励（移动轴载荷产生的力），参数激励由于离散的支持的轨道和激励由于车轮和轨道的粗糙度和轨道不均匀。轨道接收计算两个轨道系统和振动引起的高速列车通过在轨道和自由场进行评估，为不同的列车速度。土壤特性随轨道系统的变化而显著变化。最后，浮置板轨道进行了研究，以显示这种类型的解决方案如何导致显着的表面轨道的振动减少。(c)2010爱思唯尔有限公司版权所有。
The use of ballastless slab track is significantly increasing in HST line technology. This development is due to some structural and operational advantages over ballasted track. In addition, floating slab tracks can be used to control ground-borne vibrations generated by surface and underground rail transportation systems. In this paper, a general and fully three dimensional multi-body-finite element-boundary element model is used to study vibrations due to train passage on ballast and non-ballast tracks. The vehicle is modelled as a multi-body system, the track, in both cases, using finite elements and the soil is represented using boundary elements. The three components of the load are considered; the quasi-static excitation (force generated by moving axle loads), the parametric excitation due to discrete supports of the rails and the excitation due to wheel and rail roughness and track unevenness. Track receptances are computed for both track systems and vibrations induced by high-speed train passage at the track and the free-field are evaluated for different train speeds. Soil behaviour changes significantly with the track system. Finally, a floating slab track is studied to show how this type of solution leads to a significant vibration reduction for surface tracks. (c) 2010 Elsevier Ltd. All rights reserved.