山西中南部铁路通道对红旗渠的振动评估研究

山西中南部铁路通道将从全国重点文物保护单位红旗渠下穿越,为了评估铁路建成后列车运营行驶时对红旗渠所产生的振动是否满足古建筑结构的容许振动标准,采用Universal Mechanism软件建立列车-轨道三维动力模型,求得行驶列车作用于轨道上的轮轨作用力,将轮轨力作用于轨道-隧道-山体-红旗渠结构有限元模型上,计算出红旗...

Assessment of Vibration Made by Central and Southern Shanxi Railway to the Red Flag Canal

The newly-built south central railway of Shanxi will cross under Red Flag Canal which is a national key unit of cultural relics protection.We will assess whether the vibration of the train meets the allowed vibration standards of the ancient building when the operational train is in motion after the completion of the railway.In this paper,the Universal Mechanism software is used to establish a three-dimensional dynamic model of train-track,so as to get the wheel-rail force when the driving train crosses the track.Then we load the wheel-rail force on the finite element model of track,tunnel,mountain,and Red Flag Canal to calculate the dynamic response of the Red Flag Canal.The results of the study show that when the train crosses,the maximum point of vibration velocity in the canal is in the top of the external canal.The maximum speed of vibration is 1.1×10-4m·s-1,which can meet the requirements of anti-industrial vibration specification of ancient architecture.