CORRECTION OF THE SHIMOSAKO SLIDING DISTANCE ANALYTICAL SOLUTION OF A RIGID CAISSON UNDER A TRIANGULAR IMPULSIVE FORCE

Shimosako et al. (1994) presented a simplified model for the estimation of the sliding distance of a rigid caisson subjected to a triangular impulsive force in the hypotheses in which the ground can be considered non-deformable and the caisson is subject to only sliding. In these conditions, the displacement of the caisson can be expressed with an analytical formula which was provided by Shimosako et al. (1994) and is reported by Goda (2010). The analytical formula provided by Shimosako et al. (1994) is incorrect cause slightly underestimates the displacement due to a single impulsive force: the error isn’t negligible for a succession of impulsive forces over the service lifetime. The objective of the present work is to provide the correct analytical solution obtained using the same hypotheses as the Shimosako et al. (1994) simplified model.