Analysis of Safety Factor and Deflection for Single Pile Using Numerical Method

Department of Civil Engineering, Universitas Pancasila, Jakarta, Indonesia

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Abstract

The foundation is part of the building’s substructure that is in direct contact with the ground and serves to support the load of the upper structure. Deep foundations are one type of foundation designed to withstand both axial and lateral loads. Additionally, the safety factor also influences the bearing capacity value of the foundation. Lateral loads acting on the pile foundation can cause the deflection. The magnitude of deflection in the pole can be determined from field testing or by performing a manual analysis. The purpose of this study is to analyze the magnitude of the safety factor and deflection values that occur using numerical analysis. An Axisymmetric model is used for circular structures with a (more or less) uniform radial cross section and loading scheme around the central axis, where the deformation and stress state are assumed to be identical in any radial direction. Based on the research results conducted on a single pile D50 (500 mm), the safety factor value obtained was 2.878 > 2.5 with the deflection of 0.059 x 10-3 m < 0.025 m. The results obtained indicate that the safety factor and deflection values still meet the required regulations.