On the Influenced evaluation of ground Vibration to Closed building structure by Drop hammer pilling.

항타작업으로 인한 지반진동이 인접 빌딩 구조물에 미치는 영향평가

In the pilling works in the city, it is tend to transfered to the non-vibration pilling works. This drop-hammer pilling executed with in 2 meters distance to neighbour building structure. in the rainy season. According to imperical formula which tested in similar site, Vibration damaged area is within 14 meters radius from drop-hammer pilling site. The loratories Data of Dae Woo of Korea hausing Authority are refered to above poject.