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首页> 外文期刊>Soil Dynamics and Earthquake Engineering >Vibrations induced by HST passage on ballast and non-ballast tracks
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Vibrations induced by HST passage on ballast and non-ballast tracks

机译：HST在压载和非压载轨道上通过所引起的振动

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摘要

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.
机译：在HST生产线技术中，无of板坯轨道的使用显着增加。这种发展是由于与压载轨道相比在结构和操作上都有优势。此外，浮动平板轨道可用于控制地面和地下铁路运输系统产生的地面振动。在本文中，使用了一个通用的，完全三维的多体有限元边界元模型来研究列车在道ast和非道ast轨道上通过时产生的振动。车辆被建模为多体系统，在两种情况下，轨道都使用有限元，土壤使用边界元来表示。考虑了负载的三个组成部分；准静态激励（由移动的轴负载产生的力），由于钢轨的离散支撑而引起的参数励磁以及由于轮轨和钢轨的不平整度和不平整引起的励磁。计算轨道系统的轨道接受度，并评估高速列车通过在轨道上引起的振动，并针对不同的列车速度评估自由场。土壤特性随轨道系统而发生显着变化。最后，对浮动平板轨道进行了研究，以显示这种解决方案如何显着降低表面轨道的振动。

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