COLLAPSE MECHANISM OF STEEL PILES IN LIQUEFIED SOIL BASED ON CENTRIFUGAL TESTS OF SUPERSTRUCTURE-PILE FOUNDATION AND LIQUEFIED SOIL SYSTEM WITH HIGH HEIGHT-TO-WIDTH ASPECT RATIO OF BUILDING

Steel piles below high-rise buildings may carry larger varying axial force generated by the overturning moment than those low- or medium-rise buildings. On top of that, subgrade lateral stiffness reduces drastically due to soil liquefaction during a significant earthquake. pile’s horizontal strength decrease lower position inflection point. In this paper, centrifugal tests superstructure with high height-to-width aspect ratio, steel piles, and liquefied system are presented. The collapse mechanism load bearing capacity in clarified.