Research on the Laws of the Environmental Vibration Induced by Elevated Rail Transit

Abstract:

Established the Car Line - Bridge coupling dynamic model, then entered the actual parameters of train, track and bridge structural, obtained the dynamic excitation at the rail bridge pier bottom when the train passes. On this basis, established the pier - soil - building coupling dynamic model by combining finite element method and infinite boundary element method, analysed the vibration characteristics of soil and buildings surrounding the elevated rail way, brought an in-depth study to the effects of elevated rail transit train running on the environment. The results show that: 1)The the environmental vibration induced by elevated rail transit is low-frequency vibration, the vertical ground boils down to low-frequency vibration of 10 - 25Hz, the transverse vibration of housing column is fundamental frequency vibration near 10Hz, the vertical floor boils down to low-frequency vibration of 10 - 25Hz. 2) The vertical ground vibration response level decreases with the increase of distance to the rail centerline when the train passes. 3) With the increase of vibration wave propagation distance, components of higher frequency decay more quickly.

• Periodical: Applied Mechanics and Materials (Volumes 405-408)
• Pages: 1881-1886
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.405-408.1881
• Online since: September 2013
• Authors: Luo Wei, Ping Wang, Yan Le, Liu Hao, Chen Rong
• Keywords: Bridge, Elevated Rail Transit, Environmental Vibration, Finite Element Method (FEM), Infinite Boundary Element Method

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