Analisis Daya Dukung dan Penurunan Fondasi Bored Pile Berdasarkan N-SPT, Plaxis 2D, dan Pengujian Lapangan Pada Proyek Makassar New Port

Adhetea Anggun Gitario Ajitama; Muhamad Yusa; Gunawan Wibisono

doi:10.33603/jki.v14i2.12843

Authors

Adhetea Anggun Gitario Ajitama Magister Teknik Sipil, Universitas Riau, Riau, Indonesia
Muhamad Yusa Magister Teknik Sipil, Universitas Riau, Riau, Indonesia https://orcid.org/0000-0001-9748-6307
Gunawan Wibisono Magister Teknik Sipil, Universitas Riau, Riau, Indonesia https://orcid.org/0000-0002-5089-5522

DOI:

https://doi.org/10.33603/jki.v14i2.12843

Keywords:

bearing capacity, bored pile, PLAXIS 2D, PDA/CAPWAP, settlement

Abstract

Pile foundations in reclaimed areas require an evaluation of bearing capacity and settlement through analytical, numerical, and field-testing approaches. This study aims to compare the shaft resistance, end bearing resistance, and ultimate capacity of bored piles using the Meyerhof, Reese & Wright, and Luciano Decourt methods; analyze settlement using the Fellenius, Vesic, and PLAXIS 2D methods; and evaluate their agreement with PDA/CAPWAP and Static Loading Test (SLT) results. The research data were obtained from BH-02, including N-SPT values, soil parameters, foundation geometry, loading conditions, and field test results. The analyzed bored pile has a diameter of 1.20 m and a length of 29.2 m. The results show that the highest end bearing resistance was 692 tons based on the Luciano Decourt method, while the lowest was 276 tons based on the Meyerhof method. The ultimate capacities obtained using Meyerhof, Luciano Decourt, and Reese & Wright were 1,023, 1,323, and 2,166 tons, respectively, while the PDA/CAPWAP result was 1,189.98 tons. The SLT result of 1,911 tons was used as the reference ultimate capacity. Reese & Wright produced the capacity closest to the SLT result. Fellenius yielded a settlement of 14.22 mm, closest to the SLT value of 13.40 mm, while Vesic and PLAXIS 2D yielded 23.47 mm and 23.70 mm, respectively. The results indicate that the closest analytical method varies depending on the field test used as the reference.

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