Designing Sustainable Ocean Infrastructure using Reliability Based Design Optimization: A Case Study of Three-Legged Jacket Offshore Platform
Rudi Walujo Prastianto, Muhammad Rizky Syarifudin, Ferdita Syalsabila, Hastuti, Daniel Mohammad Rosyid

Department of Ocean Engineering, Institut Teknologi Sepuluh Nopember Surabaya
rudiwp[at]oe.its.ac.id

Abstract

Infrastructure is essential in utilizing maritime resources and requires reliability, resilience, and cost effectiveness. In the design phase, recent developments in computational approaches have led to design optimization that relies more on science than on the engineering judgment of designers. However, the final result of design optimization is sometimes impractical and due to drastic reduction, has a lower expected lifetime. Therefore, reliability is considered during the optimization process as part of the structural evaluation. The case study for this investigation was an offshore jacket platform that consisted of three legs at Madura Sea. Within the context of the optimization process, reliability serves as a constraint. The goal is to cut down the overall weight of the structure material. The tubular elements of the jacket construction are referred to as variables. Variables are separated into several different groupings. According to the findings, taking into account the level of reliability results in a lower optimization ratio.

Keywords: Design Optimization- Jacket- Madura Sea- RBDO- Reliability

Topic: Ocean Remote Sensing and Marine Technology