Based on the analysis theory of random energy of train derailment,an analysis theory of random energy of train derailment in wind is suggested.Two methods are proposed-the time domain method and the frequency domain m...Based on the analysis theory of random energy of train derailment,an analysis theory of random energy of train derailment in wind is suggested.Two methods are proposed-the time domain method and the frequency domain method of analysis theory of random energy of train derailment in wind.The curves ofσpw-v under various wind speeds are obtained through the computation.The original curve ofσp-v is expanded,which turns the analysis theory of random energy of train derailment into the all-weather theory.Train derailment condition has been established under wind action.The first and second criterions of train derailment have been proposed in light of wind action.The analysis of train derailment cases at home or abroad is made,in-cluding the first analysis of Xinjiang train derailment case encountered 13-level of gale,which explained the inevitability of train derailment.The analysis theory of random energy of train derailment in wind shows its validity and accuracy.The input energyσpw of the transverse vibration of train-track(bridge)-wind system is linked to train speed.With the establishment of the analysis theory of random energy of train derailment in wind,It is likely to initiate an all-weather speed limit map for a train or any high-speed train.展开更多
基金Supported by the National Basic Research Program of China(Grant No.2007CB714706)the National Natural Science Foundation of China(Grant Nos.50078006 and 50678176)Dr start-up fund researchof Xiangtan university(09QDZ14)
文摘Based on the analysis theory of random energy of train derailment,an analysis theory of random energy of train derailment in wind is suggested.Two methods are proposed-the time domain method and the frequency domain method of analysis theory of random energy of train derailment in wind.The curves ofσpw-v under various wind speeds are obtained through the computation.The original curve ofσp-v is expanded,which turns the analysis theory of random energy of train derailment into the all-weather theory.Train derailment condition has been established under wind action.The first and second criterions of train derailment have been proposed in light of wind action.The analysis of train derailment cases at home or abroad is made,in-cluding the first analysis of Xinjiang train derailment case encountered 13-level of gale,which explained the inevitability of train derailment.The analysis theory of random energy of train derailment in wind shows its validity and accuracy.The input energyσpw of the transverse vibration of train-track(bridge)-wind system is linked to train speed.With the establishment of the analysis theory of random energy of train derailment in wind,It is likely to initiate an all-weather speed limit map for a train or any high-speed train.
