Ambiya, Arifah Ismi (2026) Analisis Potensi Likuefaksi pada Proyek Pembangunan Fuel Tank Masohi Maluku Tengah Berdasarkan Data Cone Penetration Test (CPT). Undergraduate thesis, UPN "Veteran" Jawa Timur.
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Abstract
Central Maluku is a zone with moderate to high earthquake risk. The construction of a fuel tank at the Masohi Fuel Terminal is located in a coastal area within this earthquake-prone zone. Liquefaction—the loss of bearing capacity and shear strength of the soil due to water-saturated soil affected by an earthquake—is a concern. In this final project, an analysis of the potential for liquefaction was conducted based on Cone Penetration Test (CPT) data using the methods of Robertson & Wride (1997), Cetin (2004), and Idriss–Boulanger (2014) at three CPT test points, with soil parameters including unit weight (γ), pore water pressure (u), total stress (σvo), and effective stress (σ’vo) obtained via correlation. Subsequently, an analysis of the Liquefaction Potential Index (LPI) was conducted based on its safety factor (FS). Based on the results from the three methods, all test points have the potential for liquefaction up to a depth of 0.2 m – 0.4 m above the tip of the cone penetration test—with the depth limits being 9.6 m for point S-01; 13.2 m for S-02; and 4.2 m for S-03. However, the 1.2 m deep lens layer at point S-01 using the Idriss-Boulanger method showed no potential for liquefaction because it was located above the groundwater table with dense sand to gravelly sand conditions. The LPI results at test points S-01, S-02, and S-03 indicate a “very high” liquefaction index using the Robertson & Wride, Cetin, and Idriss–Boulanger methods, with index values >15. A comparison of the three methods for analyzing liquefaction potential reveals distinct characteristics in each approach. The Robertson and Wride method is more sensitive to cohesive (clay-like) soils, making it suitable for use on clay and silty clay layers. The Cetin method yields the lowest FS value because it employs a probabilistic approach, making it suitable as a lower bound for liquefaction potential analysis. Meanwhile, the Idriss–Boulanger method involves more complex parameter adjustments and is better suited for sandy soil conditions through the correction of the clean sand cone penetration resistance (qc1Ncs).
| Item Type: | Thesis (Undergraduate) | ||||||||||||
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| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) | ||||||||||||
| Divisions: | Faculty of Engineering > Departement of Civil Engineering | ||||||||||||
| Depositing User: | Arifah Ismi Ambiya | ||||||||||||
| Date Deposited: | 29 May 2026 06:50 | ||||||||||||
| Last Modified: | 29 May 2026 07:42 | ||||||||||||
| URI: | https://repository.upnjatim.ac.id/id/eprint/51972 |
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