基于原位试验地下高铁车致环境振动特性分析

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Abstract Research purposes: The transportation intersection form of railway under-passing transportation hub gradually becomes popular, the ground vibration due to the underground railway cannot be ignored. In order to determine the influence law of the operation of the underground high-speed railway on the ground vibration, according to engineering project of the high-speed railway underpassing the airport site under construction, the dropping-wheel test was conducted in the high-speed railway tunnel to obtain the vibration properties of the surrounding soils. And the semi-analytical calculation model of the vehicle-track-tunnel-ground layer was established to obtain the dynamic initial conditions of the vehicle loads. The amplitude-frequency characteristics and transmission law of the ground vibration induced by the underground high-speed railway were analyzed and the effects of the different vehicle speed, track parameters and tunnel burial depth were discussed.
Research conclusions: (1)The ground vibration decays significantly within 10 m from the centerline of the railway line with the attenuation rate of 70%. The vertical vibration amplitude is significantly larger than that of the other two directions. The lateral amplitude is the smallest with the slowest decay rate.(2)Under the condition of 350 km/h for the high-speed railway, the vertical and lateral ground vibration within 80 m reaches 20~80 dB and 43~72 dB respectively. The maximum attenuation coefficient of Z-vibration level reaches 0.276 dB/m.(3)The Z-vibration level of the ground increases by about 2 dB with the vehicle speed increasing by 50 km/h.(4)The smaller fastener stiffness leads to the larger ground vibration within 13~50 Hz, while the ground vibration is positively correlated with the fastener stiffness above 79 Hz.(5)When the tunnel burial depth is larger than 14 m, the tunnel burial depth has little influence on the change of the Z-vibration level of the ground, so the ground vibration can be reduced by limiting the burial depth of the high-speed railway tunnel to a reasonable range.(6)The research achievements can provide a reference for the design and research of the under-passing high-speed railway.

Key words： high-speed railway ground vibration dropping-wheel test transfer mobility

Received: 11 October 2023

PACS:

U231

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	Articles by authors
	DAI Feng
	YANG Jizhong
	BI Lanxiao
	LIU Yutao

Cite this article:

DAI Feng,YANG Jizhong,BI Lanxiao, et al. Analysis on Ground Vibration Properties Induced by Underground High-speed Railway Based on In-situ Experiment[J]. Journal of Railway Engineering Society, 2023, 40(12): 95-101.

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https://tdgcxb.crec.cn/EN/ OR https://tdgcxb.crec.cn/EN/Y2023/V40/I12/95

[1]	马蒙,刘维宁,刘卫丰.列车引起环境振动预测方法与不确定性研究进展[J].交通运输工程学报,2020(3):1-16.Ma Meng, Liu Weining, Liu Weifeng. Research Progress on Prediction Methods and Uncertainties of Train-induced Environmental Vibration[J]. Journal of Traffic and Transportation Engineering, 2020(3):1-16.
[2]	He Chao, Zhou Shunhua, Guo Peijun, etc. Modelling of Ground Vibration from Tunnels in a Poroelastic Half-space Using a 2.5-D FE-BE Formulation[J]. Tunnelling and Underground Space Technology,2018(12):211-221.
[3]	李昌.曲线隧道内地铁列车运行引起的地表振动传播规律研究[D].北京:北京交通大学,2019.Li Chang. Research on Propagation Rules of Ground-borne Vibration Caused by Subway Trains in a Curved Tunnel[D]. Beijing:Beijing Jiaotong University,2019.
[4]	周颖,张君秋,马开强, 等.地铁致地面振动舒适度评价与放大区振动分析[J].地震工程与工程振动,2023(2):24-33.Zhou Ying, Zhang Junqiu, Ma Kaiqiang, etc. Comfortability Evaluation of Field Vibration Caused by Subway and Vibration Analysis of Amplification Zone[J]. Earthquake Engineering and Engineering Dynamics,2023(2):24-33.
[5]	刘维宁,陈嘉梁,吴宗臻, 等.地铁列车振动环境影响的深孔激振实测传递函数预测方法[J].土木工程学报,2017(9):82-89.Liu Weining, Chen Jialiang, Wu Zongzhen, etc. Prediction Method of Measured Deep-hole Excitation Transfer Function for Environmental Influence of Metro Train-induced Vibration[J]. China Civil Engineering Journal,2017(9):82-89.
[6]	刘涛. 地下轨道交通影响的地表振动实测分析与数值模拟[D].郑州:华北水利水电大学,2019.Liu Tao. Analysis and Numerical Simulation of Ground Vibration Caused by Underground Rail Transit[D]. Zhengzhou:North China University of Water Resources and Electric Power,2019.
[7]	戚柳飞,王安斌,谢蓥松,等.地铁车辆经过不同轨道结构时对地面振动的影响研究[J].噪声与振动控制,2019(6):147-152.Qi Liufei, Wang Anbin, Xie Yingsong, etc. Influence of Different Track Structures in Metro Systems on the Tunnel and Ground Vibration Characteristics[J]. Noise and Vibration Control,2019(6):147-152.