<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>Fixed offshore platforms are structures of steel or concrete located in the middle of the sea used to export oil, trade, or military. These are designed to withstand all types of weather and dynamic loads. The response was very high under applied these loads. This paper includes a proposal to apply a new isolation system to be placed in different places on the offshore platform to reduce vibrations from high water waves. Three cases that be used, fixed-based (column connect directly to the pile), isolation system in the pile head (isolation between column and pile), and isolation system in the pile head and the middle of columns. The dynamic movements in waves were simulated using ABAQUS programs. More accurate elements and real material properties were used to bring the results closer to reality. The Computational Fluid Dynamics (CFD) method was used to study the effect of water-structure interaction and soil-structure interaction. The results show that the use of the isolation system at the base of the offshore platform has a very significant effect on decreasing the response of the platform to the loads placed on it. Where the isolation system works as a hinge at the pile head and is not allowed to move and rotate for the pile, also the moments are zero. As for the shear force, it is the least that can be compared with the other cases.</p>
</abstract>

Fixed offshore platforms are structures of steel or concrete located in the middle of the sea used to export oil, trade, or military. These are designed to withstand all types of weather and dynamic loads. The response was very high under applied these loads. This paper includes a proposal to apply a new isolation system to be placed in different places on the offshore platform to reduce vibrations from high water waves. Three cases that be used, fixed-based (column connect directly to the pile), isolation system in the pile head (isolation between column and pile), and isolation system in the pile head and the middle of columns. The dynamic movements in waves were simulated using ABAQUS programs. More accurate elements and real material properties were used to bring the results closer to reality. The Computational Fluid Dynamics (CFD) method was used to study the effect of water-structure interaction and soil-structure interaction. The results show that the use of the isolation system at the base of the offshore platform has a very significant effect on decreasing the response of the platform to the loads placed on it. Where the isolation system works as a hinge at the pile head and is not allowed to move and rotate for the pile, also the moments are zero. As for the shear force, it is the least that can be compared with the other cases.

Used Isolation System to Reduce the Response of Offshore Structure Considering Soil Structure Interaction

Civil and Environmental Engineering

This work is licensed under the Creative Commons Attribution 4.0 International License.

Fixed offshore platforms are structures of steel or concrete located in the middle of the sea used to export oil, trade, or military. These are designed to...

Used Isolation System to Reduce the Response of Offshore Structure Considering Soil Structure Interaction

Published Online: Dec 19, 2023

Page range: 662 - 675

DOI: https://doi.org/10.2478/cee-2023-0060

Keywords
Offshore structure, CFD technique, Dynamic isolation, Water wave, Soil-pile interaction

© 2023 Abdulameer Qasim Hasan et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Used Isolation System to Reduce the Response of Offshore Structure Considering Soil Structure Interaction

Published Online: Dec 19, 2023

Page range: 662 - 675

DOI: https://doi.org/10.2478/cee-2023-0060

KeywordsOffshore structure, CFD technique, Dynamic isolation, Water wave, Soil-pile interaction

© 2023 Abdulameer Qasim Hasan et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Keywords
Offshore structure, CFD technique, Dynamic isolation, Water wave, Soil-pile interaction