南京地面轨道交通运行引起的大地环境振动预测研究

›› 2012, Vol. 33 ›› Issue (S2): 302-306.

• Geotechnical Engineering • Previous Articles Next Articles

Study of ground vibration prediction caused by Nanjing rail transit operation on ground

ZHENG Jun^{1, 2}, WANG Ming-yang², XIAO Jun-hua³, SHI Ye-hui², YANG Xu¹

1. Nanjing Metro Science & Technology Consulting Co., Ltd., Nanjing 210012, China； 2. Engineering Institute of Engineering Corps, PLA University of Science and Technology, Nanjing 210007, China; 3. College of Transportation Science & Engineering, Nanjing University of Technology, Nanjing 210009, China

Received:2011-11-30 Online:2012-11-22 Published:2012-12-11

Abstract

Abstract: Environmental vibration pollution caused by city rail transit can’t be ignored. By means of in-situ test and theoretical analysis, the attenuation discipline of amplitude and frequency of ground vertical vibration acceleration with distance from track center line by Nanjing rail transit operation on ground has been obtained. With the horizontal distance between the test point and rail transit track increasing, the amplitude value of ground vertical vibration acceleration fades as a whole, but rebounds slightly at 20 to 30 m off track center line. Meanwhile the frequency of ground vertical vibration acceleration ranges from 0 to 100 Hz, and the dominant one is in the range of 30 to 80 Hz. With the distance from track center line increasing, the vibration signal component of each frequency also shows a fading tendency as a whole, and decays faster at the higher frequency. In view of Beijing Jiaotong University forecasting formula, a prediction model of ground vibration caused by Nanjing rail transit operation including the parameters of receiving point distance, the property of foundation soil and train speed has been constructed, and forecasts well compared with the actual measured data.

Key words: rail transit operation on ground, environment vibration, forecasting model

CLC Number:

U 45

ZHENG Jun , WANG Ming-yang , XIAO Jun-hua , SHI Ye-hui , YANG Xu . Study of ground vibration prediction caused by Nanjing rail transit operation on ground[J]., 2012, 33(S2): 302-306.

References

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