Title :
Shape estimation of an underground pile based on the finite difference equation of an elastic rod
Author :
Kaneko, Yutaka ; Abe, Masato ; Sone, Toshio ; Kideo, K.
Author_Institution :
Res. Center for Appl. Inf. Sci., Tohoku Univ., Sendai, Japan
Abstract :
A method to estimate the shape of the foundation piles is described. The head of the pile is hit with a small hammer and the reflected wave is recorded with a vibration pick-up attached to the same head. The method automatically estimates the shape of the pile from the recorded wave. By computer simulations and experiments using model piles, it is confirmed that the proposed method correctly estimates the shape of the underground piles
Keywords :
acoustic signal processing; acoustic wave reflection; difference equations; parameter estimation; structural engineering; acoustic signal processing; elastic rod; finite difference equation; foundation piles; pile shape estimation; reflected wave; small hammer; underground pile; vibration pick-up; Buildings; Concrete; Difference equations; Finite difference methods; Magnetic heads; Shape; Soil; Tail; Testing; Time measurement;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1991. ICASSP-91., 1991 International Conference on
Conference_Location :
Toronto, Ont.
Print_ISBN :
0-7803-0003-3
DOI :
10.1109/ICASSP.1991.151077
