Impact Analysis Of The High-Speed Train Vibration Load To Close Vertical Shaft

In recent years, the high-speed passenger trains, which includes high-speed rail, bullet trains, have became faster and faster. Nowadays the highest speed can reach350km/h, which has become the strong competitors to aviation, highway traffic forms.However, with the continuous improvement of train speed, is also brings new problems and challenges to the people. When speed increases, the vibration of the orbit and foundation also increase, which causes enormous threat to the safe operation of the train. At the same time, the vibration will spread in the form of a wave to distance along the railway’s residents living area or those production factory which sensitives to vibrate. As well as can cause problems on the surrounding environment. This paper studies HF high-speed rail and the Dallas mavericks mountain fluorite mine owners well the shortest distance of about70m. The distance is so close. When the high-speed rail start running, under the long time action of dynamic load, the wellbore may produce deformation, resulting in high railway foundation instability, threatening the safety of the train. So, the research is very necessary that the problem of dynamic response which caused by high-speed train vibration load.Combining with the engineering example, taking the xiao niu shan fluorite mine of Sheng De county in anhui province whose dynamic response caused by vibration load of the bullet train which come from hefei south railway station to fuzhou hub station of fuzhou train as research objects. First of all, according to the static load impact analysis of the main shaft of xiao niu shan fluorite mine caused by the HeFu high-speed trains, determine that the main shaft will affect the stability of railway’s foundation, therefore it is necessary to backfill on the main shaft. After that, establish a three-dimensional numerical model through the numerical method. According compared the displacement dynamic response analysis of massif and ballast bed caused by the dynamic road of the train when didn’t backfill the main shaft with the same situation when backfill the main shaft. We found that the displacement and stress have different degree of reduced when backfill the main shaft. We come to the conclusion that backfill the main shaft will have good effect on the safety operation of the train.Chinese region is broad, terrain conditions is complex, any a little carelessness could pose a threat to the safety of train operation. This, simulation and analysis of the dynamic response problem, not only provides guarantee to the safe operation of high-speed rail but also provides theoretical basis for the similar engineering example. this also is the meaning of this thesis.