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1- Department of Civil Engineering, Sahand University of Technology, Tabriz
2- Professor, Department of Civil Engineering-Marine Structures, Sahand University of Technology, Tabriz, Iran.
3- Assistant professor, Faculty of Engineering, Department of Civil Engineering, University of Hormozgan, Bandar abbas
2- Professor, Department of Civil Engineering-Marine Structures, Sahand University of Technology, Tabriz, Iran.
3- Assistant professor, Faculty of Engineering, Department of Civil Engineering, University of Hormozgan, Bandar abbas
Abstract: (404 Views)
Improving the heave response of semi-submersible platforms remains a critical and complex challenge in the offshore industry. Resonance of these motions can cause vital consequences in marine operations, particularly in drilling processes, such as disturbance in equipment action, increased stresses on the risers, and the probability of damage to the mooring systems. Hence, this study presents an innovative method that is a cost-effective and practical approach for bi-objective optimization of the total weight of the platform body and heave motion of a typical GVA4000 platform under 100-year wave conditions in the South China Sea. To ensure the feasibility and applicability of the optimized design, key restraints such as platform stability, geometric constraints, draft depth, natural heave period, and peak response spectrum were examined in order that the final design keeps its function, in addition to being realistic and applicable. For this purpose, the Ant Colony Optimization for continuous domain (ACOR) algorithm was used to minimize both the total weight of the structural platform and the heave response. The validity of the developed model was confirmed through the comparison with benchmark heave motion analyses. The results indicated that this optimization algorithm significantly enhances platform response while simultaneously optimizing the total weight of the platform body. This improvement in the structural performance and efficiency of semi-submersible platforms can play a significant role in the safety, reliability of semi-submersible platforms under harsh environmental conditions.
Type of Study: Research Paper |
Subject:
Offshore Hydrodynamic
Received: 2025/05/24 | Accepted: 2025/10/1
Received: 2025/05/24 | Accepted: 2025/10/1
فایل صوتی چکیده مقاله [MP3 2567 KB] (30 Download)
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