Visual Measurement of Pile Movement for the Foundation Work using a High-Speed Line-Scan

  • Lim, Mee-Seub (Department of Mechatronics, Kyonggi Institute of Technology) ;
  • Lim, Joon-Hong (Department of Electronics, Hanyang University)
  • Published : 2004.08.25

Abstract

When a construction company builds a high structure, many piles should be driven into the ground by a hammer whose weight is 7,000 Kg in order to make the ground under the structure safe and strong. So, it is essential to determine whether a pile is penetrated into the ground enough to support the weight of the structure since ground characteristics at different locations are different each other. This paper proposes a visual measurement system for pile rebound and penetration movement including vibration using a high-speed line-scan camera and a specially designed mark to recognize two-dimensional motion parameters of the mark using only a line-scan camera. A mark stacking white and black right-angled triangles is used for the measurement, and movement information for vertical distance, horizontal distance and rotational angle is determined simultaneously

Keywords