ABSTRACT
The Ryukyu limestone formation is not assumed to be a suitable load bearing foundation in Ryukyu Archipelago. The characteristics of Ryukyu limestone with various porosity under static and dynamic conditions have been investigated by the authors. Furthermore, the behavior of the interface between piles and Ryukyu limestone are tested using large-scale dynamic shear testing device. Some model piles founded on Ryukyu limestone are subjected to static and dynamic loads to check their deformation response and their load-bearing capacity. The authors will explain fundamental studies on foundations on Ryukyu Limestone Formation under static and dynamic loading conditions and present the outcomes of these studies and discuss their implications on bridge piles.
