EXPERIMENTAL INVESTIGATION OF UPLIFT AND COMPRESSIVE PRESSURES ON A FOOTING OF A HYBRID CAISSON

Abstract

New harbor facilities have been requested to develop by introducing new technique concept. A hybrid caisson, which was developed about twenty years ago, is one of new type structures of steel and concrete and has been employed in many harbors. One of important characteristics of the hybrid caisson is to have long footing which is effective on dispersion of self-weight to a foundation and on prevention from overturning failure. The present design only considers these effectiveness, but the long footing may be effective on suppression of horizontal sliding. The present paper investigates effects of the long footing on sliding failure and proposes empirical formulas of wave pressures around the footing for design. Economical effects of the long footing are also evaluated in the paper.