ABSTRACT
In this study, dynamic centrifuge model tests were performed to investigate the mechanical behavior of oil tank supported by a piled-raft foundation on liquefiable sand. In the centrifuge tests, two types of foundation were modeled, one is slab foundation and the other a piled-raft foundation. The piles used for the latter foundation are relatively short and are embedded in the loose sand. The vertical load supported by the raft, (RLP: Raft Load Proportion) was about 50% before shaking. The effects of soil liquefaction on the load proportion of raft and piles, and observed foundation behavior are discussed in this paper.
