Studi Perbandingan Terhadap Kekuatan Statis Struktur Jacket Lepas Pantai Melalui In-Place Analysis Berdasarkan API RP 2A-WSD Dan ISO 19902

Siregar, Varry Andreas Halomoan (2022) Studi Perbandingan Terhadap Kekuatan Statis Struktur Jacket Lepas Pantai Melalui In-Place Analysis Berdasarkan API RP 2A-WSD Dan ISO 19902. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Penelitian Tugas Akhir ini membahas tentang studi perbandingan kekuatan statis dari struktur Jacket lepas pantai 4 kaki dengan pemvariasian konfigurasi bracing nya yaitu K-brace, V plus X brace, dan Fully X-brace berdasarkan kode API RP 2A-WSD 22nd Edition (2014) dan BS EN ISO 19902:2007 + A1: 2013 melalui analisis in-place. Strukur Jacket yang di analisis adalah unmanned production platform berkaki 4 yang beroperasi di Lapangan Bekapai, Blok Mahakam, Kalimantan Timur, Indonesia. Dasar desain untuk menyatakan kesebandingan ketiga variasi struktur tersebut adalah mengacu pada aspek jumlah elevasi, material yang digunakan, dan berat strukturnya. Diperoleh berat struktur yang sudah sebanding yaitu 7778,16 kN untuk konfigurasi K-brace, 7776,82 kN untuk konfigurasi V Plus K-brace, dan 7778,52 kN untuk konfigurasi Fully X-brace. Hasil in-place analysis pada kondisi operasi menunjukkan bahwa besaran members stress UC maksimum dan joints punching shear UC hasil analisis berdasarkan ISO 19902 lebih konservatif karena menghasilkan besaran UC yang lebih kecil daripada API RP 2A-WSD. Sedangkan, pada kondisi badai, besaran members stress UC maksimum dan joint punching shear UC hasil analisis berdasarkan API RP 2A-WSD lebih konservatif karena menghasilkan besaran UC yang lebih kecil daripada ISO 19902. Struktur Jacket dengan konfigurasi Fully X-brace memiliki respon terbaik dalam menahan beban statis untuk studi kasus ini karena memiliki periode natural yang paling kecil dan menghasilkan besaran UC yang paling kecil diantara ketiga variasi model struktur yang dianalisis.
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This Final Project research discusses a comparative study on the static strength of four legged offshore jacket structures with various bracing configurations of K-brace, V Plus K brace, and Fully X-brace operates in Indonesian territorial waters based on API RP 2A-WSD 22nd Edition (2014) and BS EN ISO 19902:2007 + A1: 2013 by conducting in-place analysis. The Jacket structural data for this analysis is the four-legged unmanned production platform owned by PT. T which operates at Bekapai Field, Mahakam Block, East Borneo, Indonesia. The design basis for stating that the three structural variations are comparable refers to the aspect of the number of elevations, the material used, and total dead weight. After modeling and given the contingency factor to equalize the total dead weight of the K-brace configuration and the V Plus K-brace configuration with the Fully X-brace configuration, the total dead weight of the structure obtained is comparable, there are 7778,16 kN for the K-brace configuration 7776,82 for the V Plus K-brace, and 7778,52 kN for the Fully X-brace configuration. The results of the in-place analysis of operating conditions show that the maximum combined members stress UC value and the joints punching shear UC based on ISO 19902 is more conservative because it produces a smaller UCs value than API RP 2A-WSD. Meanwhile, during storm conditions, the maximum combined members stress UC value and the joints punching shear UC based on API RP 2A-WSD are more conservative because it produces a smaller UCs value than ISO 19902. The Jacket structure with Fully X-brace bracing configuration has the best response to withstand the static loads for this case study because it has the smallest natural period and produces the smallest UCs value among the three variations of the analyzed structural model.

Item Type:	Thesis (Other)
Additional Information:	RSKe 627.98 Sir s 2022 3100022094454
Uncontrolled Keywords:	API RP 2A-WSD, Bracing, In-place analysis, ISO 19902, Jacket
Subjects:	T Technology > TC Hydraulic engineering. Ocean engineering > TC1680 Offshore structures
Divisions:	Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis
Depositing User:	ansi aflacha
Date Deposited:	17 Dec 2025 04:43
Last Modified:	17 Dec 2025 04:43
URI:	http://repository.its.ac.id/id/eprint/129025

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