ANALISIS DAYA DUKUNG TANAH TIANG TUNGGAL DAN TIANG KELOMPOK PROYEK PEMBANGUNAN JEMBATAN AKSES TAMAN KAWASAN CPI KOTA MAKASSAR SULAWESI SELATAN

Abstract

Bridge construction requires precise foundation planning to ensure the structure can safely and stably support both construction and traffic loads. In the Access Bridge Construction Project to the Center Point of Indonesia (CPI) Park in Makassar City, the foundation used was a spun pile type, considering the reclaimed soil condition consisting of sand mixed with seashell fragments and silty sand. This internship aimed to directly observe the pile foundation construction process on-site and to analyze the bearing capacity of single and group piles based on Standard Penetration Test (SPT) data using the Luciano Decourt method. The implementation method included documentation, field observation, and interviews with the contractor. The analysis was conducted on pile diameters of 50 cm and 80 cm. The results showed that the 50 cm diameter piles experienced a settlement of 0.085 m, exceeding the allowable limit of 0.05 m, and were therefore deemed unsafe. Meanwhile, the 80 cm diameter piles had a settlement of 0.057 m, below the allowable limit of 0.08 m, and met the bearing capacity criteria, thus recommended for use in this project.