Wang, X, Liu, Z, Lim, TA, & Kang, CW. "Numerical Study on Seismic Performance of Jack-Up Platform for Operation Safety." Proceedings of the ASME 2024 43rd International Conference on Ocean, Offshore and Arctic Engineering. Volume 1: Offshore Technology. Singapore, Singapore. June 9–14, 2024. V001T01A024. ASME. https://doi.org/10.1115/OMAE2024-123644
Abstract:
Jack-up platform, as the mobile offshore structure, confronts the challenge of operating in seismically active regions due to growing demands of offshore activities. The operational safety of these platforms subjected to seismic events is critical to maintain uninterrupted operations and to minimize potential economic losses.
The research conducts a comprehensive parametric study to evaluate the seismic response of a mobile jack-up platform within sesmic regions, accounting for effects of variations of seabed soil condition, water depth, and hull elevated load. A detailed 3D finite element model of a typical jack-up platform is developed to accurately capture structural properties. The interaction between spud can foundation and soil is modeled using spring elements, guided by ISO 19905-1, to address the influence of seabed soil.
The parametric study employs parameter correlation analysis, DOE, and response surface method (RSM). Correlation analysis explores the impact of factors, such as seabed soil property, hull elevated mass and hull elevation on seismic response. The constructed response surface serves as a surrogate model and screening tool, enabling a rapid and efficient assessment of seismic response and platform safety, while circumventing the need for extensive seismic simulations. Moreover, it facilitates optimization for operation. In conclusion, this research contributes to enhance jack-up platform design and operation safety, particularly in seismic-prone regions.
License type:
Publisher Copyright
Funding Info:
This research / project is supported by the IAF-ICP - Digital Design and Optimisation for LNG and Offshore Wind
Grant Reference no. : I2101E0003