基于现场测试的列车引起地基振动分析

doi:10.13722/j.cnki.jrme.2015.03.018

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Abstract In order to analyze the ground vibration induced by the high-speed train，a simplified analytical solution of the moving train load considering the geometric irregularities of track was derived and the flexibility matrix was derived based on 2.5D finite element method. Then，using the load derived above as the input，a train-track-foundation model was established，and the influence of geometric irregularity on wheel/rail force was calculated. If the wavelength and speed were kept constant，the greater the amplitude was，the greater the ground vibration and the greater the wheel/rail force. If the amplitude and speed were kept constant，the longer the wave length was，the smaller the foundation vibration and the smaller the wheel/rail force. If the wavelength and amplitude were kept as constant，the greater the speed was，the more intense the vibration.

Key words： soil mechanics high-speed railway track geometric irregularities train load 2.5D finite element method ground vibration

Received: 11 April 2014

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http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2015.03.018 OR http://www.rockmech.org/EN/Y2015/V34/I03/601

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