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Pile Driving에 의한 지반진동 측정 및 진동 영향 평가

Measurement and Monitoring of Ground Vibration due to Pile Driving

초록/요약

In this paper, the ground vibrations have been measured. These were induced during pile driving using vibratory hammer at construction field of the 1st subway line in Gwangju. The measurement of ground vibrations was divided by four step to pile driving processing, auger in reclaimed layer, casing, auger in soft rock layer and H-pile driving. The measured data were analyzed by reliability index to determination the vibration equations and the allowable isolate distance for vibration criteria. These equations and allowable isolate distance were suggested with division of ultimate limit state(β=0), serviceability limit state(β=1.28), safety state(β=3), respectively. These equations can be used to predict the peak vibration values where soil conditions are similar to this test site. From this paper, analysis method for vibrations inference using reliability index was estabilished and the attenuation of the ground vibration induced during pile driving using vibratory hammer(T4W) are suggested.

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