Farhana, Roficho Filzah (2021) Analisis Kekuatan Ultimat Struktur Jacket Minimalis 3 Kaki Berbasis Keandalan Denagan Variasi Tipe Tanah. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Desain struktural platform jacket semakin hari semakin matang dengan mengedepankan persyaratan baru untuk meningkatkan kinerja struktural dan mengurangi biaya produksi. Untuk desain offshore platform tradisional biasanya dirancang secara konservatif dan berukuran besar sehingga proses pembuatan dan penginstalan memerlukan biaya tinggi. Oleh karena itu, pada tugas akhir ini dilakukan optimasi dengan melakukan modifikasi struktur jacket menjadi struktur yang minimalis agar mudah untuk dipindahkan dan digunakan kembali. Untuk mengetahui beban maksimum yang dapat ditumpu oleh jacket minimalis, penulis melakukan analisis kekuatan ultimat dari struktur jacket minimalis tersebut. Kekuatan pada jacket berhubungan dengan penetrasi pile yang dibuat untuk menopang struktur tersebut dengan memperhatikan kondisi tanah yang ada pada tempat dimana jacket akan dipancang. Ketidakstabilan kondisi tanah ini akan mengakibatkan perbedaan kekuatan pada struktur jacket. Maka dari itu penulis akan melakukan analisis kekuatan ultimat dengan menggunakan metode Pushover Analysis Non-Linear untuk mendapatkan RSR (Reserve Strength Ratio) pada setiap variasi tipe tanah. Setelah itu dilakukan analisis keandalan untuk mengetahui keandalan struktur dalam kondisi ultimate pada setiap variasi tipe tanah dengan metode Monte Carlo. Diperoleh hasil analisis pushover menghasilkan RSR terkecil pada struktur dengan tanah tipe A dengan sebesar 24, diikuti dengan struktur dengan tanah tipe B dan C. Analisis keandalan dengan keandalan terbesar terjadi pada struktur dengan tanah tipe C sebesar 0,510.
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The structural platform jacket is increasingly mature by putting forward new requirements to improve structural performance and reduce production costs. Offshore platform designs are usually designed conservatively and are large so that the manufacturing and installation process requires high costs. Therefore, in this final project, optimization is carried out by modifying the jacket structure into a minimalist structure so that it is easy to move and reuse. To see the maximum load that a minimalist jacket can support, the author analyzes the ultimate strength of the minimalist jacket structure. The strength in the jacket associated with pile penetration is made to support the structure for the soil conditions at the place where the jacket will be placed. This instability in soil conditions will result in differences in strength in the jacket structure. Therefore, the author will conduct an ultimate strength analysis using the Non-Linear Pushover Analysis method to obtain RSR (Reserve Strength Ratio) for each variation of soil type. After that, it was done than analysis to see that to see too that use the ultimate condition on each other variety with the Monte Carlo method. The results of pushover analysis resulted in the RSR of structures with soil type A with 24, followed by structures with soil types B and C. The reliability analysis with the greatest reliability occurred in the structure with type C soil of 0.510.
Item Type: | Thesis (Undergraduate) |
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Uncontrolled Keywords: | Minimalis, Ultimate, Pushover, Reserve Strength Ratio, Monte Carlo, Minimalist, Ultimate, Pushover, Reserve Strength Ratio, Monte Carlo |
Subjects: | T Technology > TA Engineering (General). Civil engineering (General) > TA169 Reliability (Engineering) T Technology > TA Engineering (General). Civil engineering (General) > TA169.5 Failure analysis T Technology > TA Engineering (General). Civil engineering (General) > TA645 Structural analysis (Engineering) T Technology > TA Engineering (General). Civil engineering (General) > TA658 Structural design T Technology > TC Hydraulic engineering. Ocean engineering > TC1680 Offshore structures |
Divisions: | Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis |
Depositing User: | Roficho Filzah Farhana |
Date Deposited: | 05 Mar 2021 08:37 |
Last Modified: | 05 Mar 2021 08:44 |
URI: | http://repository.its.ac.id/id/eprint/83082 |
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