The Dividing Frequency Bands Prediction Method Based on Bornitz Model for Train-Induced Environmental Vibration and its Application

Abstract:

The frequency component of ground vibration induced by train is complex. The propagating attenuation characteristics of ground vibration are dependent on frequency. A new prediction method based on Bornitz model for predicting the train-induced ground vibration is presented in this paper. This approach divides the frequency component into many small frequency bands according to one-third-octave. Then it predicts the vibration acceleration level VAL of each frequency bands based on Bornitz model respectively. Finally, the predicted value of Z-vibration level VL_Z is computed by the predicted value of VAL and the corresponding frequency-weighting value C. The traininduced ground vibration was measured and predicted in Chengdu-Dujiangyan railway. The results of comparing the predicted value of VL_Z with the measured value show that the prediction value of VL_Z is 3.8dB less than the measured value in the prediction point of 25m away from the railway, where the vibration strength occur rebound. In other five prediction points the ground vibration predicted value are 1.3~3.1dB more than measured value. This study shows that using the prediction method presented in this paper for predicting train-induced ground vibration has good accuracy on the whole.

• Periodical: Advanced Materials Research (Volume 748)
• Pages: 581-584
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.748.581
• Online since: August 2013
• Authors: Guang Ming Zhang, Yu Long He, Li Zhong Yang
• Keywords: Bornitz Model, Frequency Band, Ground Vibration, Prediction Method, Railway

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