Analysis of Vibration Reduction and Vibration Measurement for Long-Span Railway Station Floor Slab

YU Zhixiang; HU Guanghua; LI Tongmei; FENG Dubei

doi:10.3969/j.issn.0258-2724.20170746

Volume 54 Issue 2

Jun. 2019

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Journal of Southwest Jiaotong University > 2019 > 54(2): 296-303, 342.

YU Zhixiang, HU Guanghua, LI Tongmei, FENG Dubei. Analysis of Vibration Reduction and Vibration Measurement for Long-Span Railway Station Floor Slab[J]. Journal of Southwest Jiaotong University, 2019, 54(2): 296-303, 342. doi: 10.3969/j.issn.0258-2724.20170746

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YU Zhixiang, HU Guanghua, LI Tongmei, FENG Dubei. Analysis of Vibration Reduction and Vibration Measurement for Long-Span Railway Station Floor Slab[J]. Journal of Southwest Jiaotong University, 2019, 54(2): 296-303, 342. doi: 10.3969/j.issn.0258-2724.20170746

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Analysis of Vibration Reduction and Vibration Measurement for Long-Span Railway Station Floor Slab

doi: 10.3969/j.issn.0258-2724.20170746

Received Date: 22 Oct 2017
Rev Recd Date: 29 Nov 2017

Available Online: 10 Oct 2018

Publish Date: 01 Apr 2019

Abstract

Abstract

To reduce the vibration of a cross-line station induced by long heavy trains and improve its comfort and safety, the vibration responses of a long-span elevated railway station waiting room floor slab were studied with measured data and finite element methods. The vibration level was evaluated by 1/3 octave method, and a method of suppressing the vibration of the floor slab via tuned mass damper (TMD) energy dissipation was proposed. The results show that the predominant frequency of floor vibration is in the vicinity of 6.3 Hz, and the average vibration response level due to vehicle acceleration exceeds the permissible value of 11.0–12.6 dB when a heavy long train passes through the cross-line beneath the waiting hall floor. After adding a mass damper with a mass ratio of 0.1 to each floor slab, the insertion loss of the vibration response level reached 13.0–17.0 dB, and the vibration level of the dampers were within the standard limit.
- long-span floor slab,
- heavy long train,
- vibration comfort,
- TMD,
- vibration attenuation

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References

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