The Train Study The Effects Of Vibration Of The Elevated Station

The elevated station is a novel structural form for railway station, which station houses are connected with railway lanes by the vertical support structures. So, the vibration caused by the passing trains may transfer to the superstructure through the vertical supports, and then have some impact on safety problems of the station structures and the comfort issues of the passengers. Therefore, it is necessary to carry out further study on the structures about the vibration induced by high-speed trains to ensure the security of the structures and the comfort of passengers. In this thesis, taking the New Hangzhou East Railway Station for example, the vibration of the structures induced by the high-speed train has been discussed, and the main research works are as follows:1) Through summarizing the developments of high-speed railways and the dynamic interaction of the train and the structure at domestic and abroad, the necessity of the vibration induced by the high-speed train through the viaduct the passenger terminals has been studied.2) Since the elevated station is a complicated structural systems, the analysis of the dynamic "bridge-train-structure" interaction is converted into two steps. First, Taking the coupled vibration of vehicles and structures into account, time-history load on the structure was calculated by dynamic analysis software GSAP; Then, "bridge-structure" spatial whole model is established by FEA software MIDAS so that the time-history dynamic analysis of the "bridge-structure" system was carried out after adding the time-history load on the model.3) Based on summarizing several frequent used international environmental evaluation criteria of vibration caused by traffic loading, the criteria of vibration control for this thesis are determined by considering the actual circumstance in China.4) By comparing the vibration response and regularities of distribution between the overall model and sub-model without the canopy, it is verified that the analysis of vibration response for the station house can be implemented by the sub-model instead of the overall model for improving the calculation efficiency.5) By analyzing the data of the displacement and acceleration of the floor, the peak velocity and the vibration acceleration level on typical operating conditions, combined with the corresponding evaluation criteria, it can be seen that the safety and comfort of the station's floor under vibration meet the demands of criteria.