An explicit finite element method for calculating the environmental vibration caused by urban rail traffic

作者：Cui Gao Hang^*; Tao Xia Xin; Wang Fu Tong; Chen Xian Mai

来源：Journal of Harbin Institute of Technology, 2009, 16(SUPPL. 1): 194-197.

• Artificial boundary condition
• Beijing , China
• Element method
• Environmental vibrations
• Explicit finite element method
• Field observations
• Numerical simulating
• Point sources
• Rail traffic
• Simulation result
• Subgrade reactions
• Time domain
• Track irregularity

In this paper, the space-time decoupling explicit finite element method is used to calculate the surface environmental vibration caused by urban rail traffic. Taking into account the track irregularity spectrum, each subgrade reaction under ballast block is calculated when the train passes the track, all the forces constitute the point source array to simulate the source. Combined with artificial boundary conditions in the calculation border region, the surface environmental vibrations are calculated by using the decoupling finite element method. The simulation results are compared with the field observation in Beijing, China, and the results prove that the numerical simulating method in this paper has a satisfied precision. This method can provide a foundation for further study on environmental vibration induced by urban rail traffic.

• 出版日期2009
• 单位东北林业大学