地铁车辆段咽喉区地面振动传播规律实测与分析

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摘要实测广州地铁3号线厦滘车辆段咽喉区直、曲线段列车运行引起的周围地面振动影响，分析列车引起地面振动加速度在时、频域内的传播规律。结果表明，咽喉区直线段在轨道35 m范围内，地面竖向振动加速度级为72~95 dB，略大于水平振动加速度级62~95 dB；咽喉区曲线段在轨道25 m范围内，地面竖向振动加速度级为70~98 dB，略小于水平振动加速度级80~98 dB；对地铁车辆段咽喉区临近的环境振动评价时，应同时考虑水平、竖向振动影响；中高频振动随距离增加衰减速度较低频快，咽喉区列车运行引发的振动传递到临近建筑物时主要频率成分为4~60 Hz。建议在车辆段减振措施设计时应重点考虑中低频振动的减振方案；在路基外侧沿轨道方向结合排水设施设置明沟利于减弱车辆段列车运行引发的振动传播。

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	邹超1
	汪益敏1
	汪朝晖2
	曾泽民1
	何涛2

关键词 ：地面振动, 车辆段, 咽喉区, 现场测试, 传播规律

Abstract：Field measurements were carried out at Xiajiao Metro Depot of Guangzhou Metro Line 3 subjected to moving trains on straight section and curve section of throat area. The propagation law of ground vibration acceleration induced by metro trains passing the throat area was investigated in the domains of time and frequency. The conclusion is that the ground vertical vibration acceleration level is 72~95dB during trains running on straight section in 35 m from the train running track, and ground horizontal vibration acceleration level is 62~95dB. Vertical vibration is stronger than the horizontal vibration slightly. However, the ground horizontal vibration acceleration level which is 80~98dB is stronger than ground vertical vibration acceleration level which is 70~98dB during trains running on curve section in 25 m from the train running track, and horizontal vibration and vertical vibration should be simultaneously considered in the evaluation of environmental vibration near the throat area of metro depot. The attenuation speed of the medium-high frequency vibration is larger than low frequency vibration, and the main frequency of vibration transmitting to adjacent buildings is mainly within 4~60dB. It is suggested that low and medium frequency vibration should be primarily taken into account in the vibration mitigation measure of metro depot. The open trench which is used for drainage along the direction of the track can reduce the vibration.

Key words： ground vibration metro depot throat area field test propagation law

收稿日期: 2013-12-19 出版日期: 2015-08-25

引用本文:

邹超1，汪益敏1，汪朝晖2，曾泽民1，何涛2. 地铁车辆段咽喉区地面振动传播规律实测与分析[J]. 振动与冲击, 2015, 34(16): 200-206.
ZOU Chao1，WANG Yi-min1，WANG Zhao-hui2，ZENG Ze-min1，HE Tao2. Field measurement and analysis of ground vibration in the throat area of metro depot. JOURNAL OF VIBRATION AND SHOCK, 2015, 34(16): 200-206.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2015/V34/I16/200

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