Train-track-ground coupling numerical method for railway traffic induced ground vibration

作者：He Zhen Xing^*; Zhai Wan Ming; Yang Ji Zhong; Zhao Huai Yun

来源：Journal of Vibration Engineering, 2008, 21(5): 488-492.

• Analytical methods
• And scatterings
• Artificial boundaries
• Body dynamics
• Composite beams
• Coupling dynamics
• Do-mains
• FEM
• Finite elements
• Ground vibration (railway traffic
• Ground vibrations
• Hexahedron finite elements
• Railway traffics
• Suspension springs

Based on the vehicle-track coupling dynamic theory, a numerical method is developed to simulate the train induced ground vibration. The considered vehicle is modeled as multi-body dynamic system including the suspension springs and dampers. The track is meshed by a composite beam finite element. The three-dimensional hexahedron finite element is used to mesh the calculation domain of the ground. Impedance and scattering characteristics of the calculation domain edges are simulated by three-dimensional visco-elastic artificial boundary. Simulation are performed for the ground vibration generated by the train with a composition of eight cars running at the speed of 200 km/h. Comparisons of this work and existing studies indicate that the result of numerical method agrees well with that of analytical method, and the preliminary prediction of the train induced ground vibration can be implemented by using of the numerical method.

• 出版日期2008
• 单位西南交通大学