Investigation on Noise Characteristics of Pile Driving Operation and Design of a Low-noise Pile Cap Based on the Scale Model Experiment

항타공법에 의한 발생 소음 특성 분석 및 축소 모형 실험을 이용한 저소음 말뚝 캡의 설계

Noise radiated from pile driving operation is one of major sources of community noise pollution and thus its operation method is strictly restricted by regulations. Although the drilling method is now used been commonly used in urban areas because of its activity, the benefit of low noise decreases due to high working cost. In the present work, noise characteristics of pile driving operation are carried out. Based on the study result, a low-noise pile cap for driven piles is developed in order to satisfy both the noise level restriction and the economical efficiency. Effects of pile cap are investigated by a scale model experiment, which is focused on the variation of impact force and sound pressure level. The results show a good possibility of noise reduction by an appropriately designed pile cap.