复杂地形下山区轨道交通振动传播规律现场测试

Hazard Control in Tunnelling and Underground Engineering

2019, Vol. 1

Issue (3): 39-45 DOI:

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Field tests on attenuation of train induced soil vibration under inclined topography conditions

DING Xuanming^1,2, YANG Jinchuan^1,2, WANG Chenglong^1,2, YANG Changwei³

1. College of Civil Engineering, Chongqing University, Chongqing 400045, China;
2. Key Laboratory of New Technology for Construction of Cities in Mountain Area, Chongqing University, Chongqing 400045, China;
3. School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, China

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Abstract Field tests were carried out to study the vibrations problem induced by moving train traffic under complex topography conditions on the viaduct section of Chongqing Light Rail Line 6 passing through typical slopes. Attenuation of train induced soil vibration under inclined topography conditions were analyzed. The results showed that the main frequencies of ground vibration caused by trains were distributed 30-95 Hz under the semi-concave field, and the ground vibration presented wave attenuation. Two vibration amplification zones appeared in the direction of 45, and 90 degrees from the track center line. Affected by the topography of the site, the vibration was mainly concentrated in the concave field, and the attenuation of vibration in the two directions was not obvious in the concave field, but the attenuations showed significantly different variations. The vibration with a low-frequency was obvious near the pier, and the train operation had obvious periodical loading phenomenon. The ground vibration was mainly concentrated in the high-frequency part, but the attenuation of the high-frequency part was not obvious, while the vibration of the low-frequency part attenuated to some extent. Whats more, the frequency vibration caused by the up train was greater than that of the down train.

Key words： inclined topography vibration field test rail traffic frequency

Received: 27 June 2019 Published: 13 November 2019

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Cite this article:

DING Xuanming,YANG Jinchuan,WANG Chenglong, et al. Field tests on attenuation of train induced soil vibration under inclined topography conditions[J]. Hazard Control in Tunnelling and Underground Engineering, 2019, 1(3): 39-45.

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http://tunnel.sdujournals.com/EN/ OR http://tunnel.sdujournals.com/EN/Y2019/V1/I3/39

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