ANALYSIS OF BORED PILE FOUNDATION IN POTENTIALLY LIQUEFIED SOIL (CASE STUDY: ANUTAPURA MEDICAL CENTER BUILDING)

Abstract

Pile foundations placed until hard soil layer and passed through a liquefied layer can be a mitigation effort against liquefaction hazards to buildings. Nevertheless, liquefaction can still impact the stability of the pile. The Anutapura Medical Center (AMC) building at the Anutapura General Hospital complex, Palu city, is a building that is planned to be built on potentially liquefied soil. The foundation of the building was planned to use bored pile foundations to mitigate the possibility of liquefaction. This study aims to analyze and compare the stability of the bored pile group foundation of the AMC building under non-liquefaction and liquefaction soil conditions. The study was conducted by manually calculating the bearing capacity of the bored pile based on soil data. Further analysis was carried out by modeling the pile foundation using Geo5 Pile Group to determine the deformation and internal forces acting on the pile group. The analysis was carried out in 2 cases, i.e., non-liquefaction and liquefaction conditions. The results show differences in the bearing capacity, deformation, and internal forces in non-liquefaction and liquefaction soil conditions. The study results are expected to be a reference and consideration in designing pile foundations in liquefaction-prone locations.