Study on Vibration of Futian Underground Hub in Guangzhou-Shenzhen-Hong Kong High-Speed Rail

Abstract:

A finite element model considering the high-speed train excitation loads, track structure, vibration reduction measures, station structure, characteristics of foundation soils was established to study the problem of vibration in the underground Futian hub of Guangzhou-Shenzhen- Hong Kong high-speed rail. The first 200 natural frequencies of the station are all within 40Hz, the vibration energy concentrates mainly in the second and third floors, in the form of bending vibration mode; the modes of local orbital plate mainly accounts for vertical vibration, and the lowest frequency is near 26Hz.The additional displacement and stress induced by vibration is not great in general, vibration energy of the structure is mainly concentrated in the band of 15~20Hz. When the train passes by at a speed of 200km/h, without damping rubber pads, the maximum vibration level at upper floors is 57.9 dB, while with damping pads under the orbits the vibration level decreases by 5~6dB,which is a significant effect.

• Periodical: Applied Mechanics and Materials (Volumes 178-181)
• Pages: 1238-1244
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.178-181.1238
• Online since: May 2012
• Authors: Jie Yao, Ming Qing Xiao, Dun Huang, Guang Hua Yang
• Keywords: High-Speed Railway (HSR), Structural Vibration, Underground Hub, Vibration Mitigation

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