Analisis Kekuatan Memanjang Crane Barge Saat Operasi Heavy Lifting Akibat Variasi Trim

Selvia, Shafrina Putri (2024) Analisis Kekuatan Memanjang Crane Barge Saat Operasi Heavy Lifting Akibat Variasi Trim. Other thesis, Institut Teknologi Sepuluh Nopember.

Text 5020201003-Undergraduate_Theses.pdf - Accepted Version Restricted to Repository staff only until 1 October 2026. Download (8MB) | Request a copy

Abstract

Tingkat permintaan minyak dan gas yang tinggi mendorong upaya pengembangan dan revitalisasi anjungan lepas pantai. Salah satu metode umum untuk instalasi anjungan ini adalah melalui operasi lifting menggunakan crane barge. Namun, salah satu perhatian utama adalah kekuatan memanjang dari barge dalam berbagai kondisi beban, terutama selama operasi pengangkatan berat yang dapat menyebabkan perubahan trim. Penelitian ini bertujuan untuk menganalisis kekuatan memanjang dari sebuah crane barge selama operasi pengangkatan berat di bawah kondisi trim yang berbeda. Penelitian ini melibatkan analisis matematis menggunakan perangkat lunak MOSES untuk mensimulasikan perubahan beban dan dampaknya pada struktur barge. Analisis mencakup perhitungan gaya geser dan momen lentur untuk membandingkan kondisi even keel hingga trim 1 meter ke arah buritan. Hasil penelitian menunjukkan bahwa tren distribusi beban konsisten di seluruh variasi trim, dengan peningkatan signifikan teramati di sekitar frame 8 hingga frame 47 (lokasi tangki ballast) dan frame 50 hingga frame 55 (lokasi pedestal crane). Gaya geser maksimum terjadi pada frame 13, sebesar 1481 ton, dan momen lentur maksimum pada frame 29, sebesar 47450 mt.m. Kedua nilai tersebut memenuhi kriteria yang diizinkan oleh aturan DNV, sehingga mengonfirmasi integritas struktural dari crane barge di bawah kondisi yang dianalisis.
=====================================================================================================================================
The ever-increasing demand for oil and gas requires the development and revitalization of offshore platforms. One of the common methods for the installation of this platform is through lifting operations using a barge crane. However, one of the main concerns is the elongated strength of this barge under various load conditions, especially during heavy lifting operations which can lead to trim changes. The study aims to analyze the longitudinal strength of a crane barge during heavy lifting operations under different trim conditions. This research involves mathematical analysis using MOSES software to simulate changes in loads and their impact on barge structures. The analysis included calculations of shear forces and bending moments to compare the conditions of the keel event up to the 1-meter trim towards the stern. The results showed that the load distribution trend was consistent across trim variations, with significant increases observed around frames 8 to 47 (ballast tank locations) and frames 50 to 55 (pedestal crane locations). The maximum shear force occurs in frame 13, which is 1481 tons, and the maximum bending moment in frame 29, is 47450 mt.m. Both values meet the criteria allowed by DNV rules, thus confirming the structural integrity of the crane barge under the conditions analyzed.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Crane barge, trim, gaya geser; momen lentur, shear force, bending moment.
Subjects:	T Technology > TC Hydraulic engineering. Ocean engineering > TC1680 Offshore structures V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM161 Ships--Hydrodynamics V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM163 Hulls (Naval architecture) V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM297 Ships Designs and drawings
Divisions:	Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis
Depositing User:	Shafrina Putri Selvia
Date Deposited:	29 Jul 2024 03:37
Last Modified:	29 Jul 2024 03:37
URI:	http://repository.its.ac.id/id/eprint/109245

Actions (login required)

View Item