Analisis Daya Dukung Aksial Pondasi Bore Pile Menggunakan Data DCPT Pada Proyek Rehabilitasi Jembatan Hos Cokroaminoto, Medan

Abstract

A foundation is a substructure element that transfers building loads to a soil layer capable of supporting them safely. The Cokroaminoto Bridge construction project utilizes bored pile foundations, necessitating a bearing capacity analysis to ensure structural safety and stability. This study aims to analyze and compare the axial bearing capacity of bored piles based on Dutch Cone Penetration Test (DCPT) data, employing the Meyerhof (1956) and Nottingham & Schmertmann (1975) methods. The study utilizes DCPT soil investigation data from two points (S-1 and S-2) at the project site, with pile dimensions of 80 cm in diameter and 8 meters in depth. Calculations of single-pile axial bearing capacity were performed to determine differences in end-bearing and skin-friction capacities derived from the two methods. Subsequently, an analysis of pile group efficiency and bearing capacity was conducted using the Converse-Labarre, Los Angeles Group Action Equation, and Seiler-Keeney methods, with results compared against field Pile Driving Analyzer (PDA) test data. The results indicate that the Meyerhof (1956) method at point S-2 yields the safest allowable bearing capacity value, which most closely approximates the results of the field PDA test.