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

被引：0
|
作者：
Yu Z. [1 ]
Hu G. [1 ]
Li T. [1 ]
Feng D. [2 ]
机构：
[1] School of Civil Engineering, Southwest Jiaotong University, Chengdu
[2] China Railway Eryuan Engineering Group Co. Ltd., Chengdu
来源：
Xinan Jiaotong Daxue Xuebao/Journal of Southwest Jiaotong University | 2019年 / 54卷 / 02期
关键词：
Heavy long train; Long-span floor slab; TMD; Vibration attenuation; Vibration comfort;
D O I：
10.3969/j.issn.0258-2724.20170746
中图分类号：
学科分类号：
摘要：
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. © 2019, Editorial Department of Journal of Southwest Jiaotong University. All right reserved.
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页码：296 / 303and342
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