Petroleum Science >2015,??Issue 1:??148-156 DOI: https://doi.org/10.1007/s12182-014-0007-4
Analysis of spudcan–footprint interaction in a single soil with nonlinear FEM Open?Access
文章信息
作者：Dong-Feng Mao,Ming-Hui Zhang,Yang Yu,Meng-Lan Duan and Jun Zhao
作者單位：
College of Mechanical and Transportation Engineering, China University of Petroleum, Beijing 102249, China;College of Mechanical and Transportation Engineering, China University of Petroleum, Beijing 102249, China;College of Mechanical and Transportation Engineering, China University of Petroleum, Beijing 102249, China;College of Mechanical and Transportation Engineering, China University of Petroleum, Beijing 102249, China;College of Mechanical and Transportation Engineering, China University of Petroleum, Beijing 102249, China
投稿時間：2015-01-24
引用方式：Mao, DF., Zhang, MH., Yu, Y. et al. Pet. Sci. (2015) 12: 148. https://doi.org/10.1007/s12182-014-0007-4
文章摘要
The footprints that remain on the seabed after
offshore jack-up platforms completed operations and moved
out provide a significant risk for any future jack-up installation
at that site. Detrimental horizontal and/or rotational loads will
be induced on the base cone of the jack-up platform leg
(spudcan) in the preloading process where only vertical loads
are normally expected. However, there are no specific
guidelines on design of spudcan re-installation very close to or
partially overlapping existing footprints. This paper presents a
rational design approach for assessing spudcan–footprint
interaction and the failure process of foundation in a single
layer based on nonlinear finite element method. The relationship
between the distance between the spudcan and the
footprint and the horizontal sliding force has been obtained.
Comparisons of simulation and experimental results showthat
the model in this paper can deal well with the combined
problems of sliding friction contact, fluid–solid coupling, and
convergence difficulty. The analytical resultsmay be useful to
jack-up installation workovers close to existing footprints.
offshore jack-up platforms completed operations and moved
out provide a significant risk for any future jack-up installation
at that site. Detrimental horizontal and/or rotational loads will
be induced on the base cone of the jack-up platform leg
(spudcan) in the preloading process where only vertical loads
are normally expected. However, there are no specific
guidelines on design of spudcan re-installation very close to or
partially overlapping existing footprints. This paper presents a
rational design approach for assessing spudcan–footprint
interaction and the failure process of foundation in a single
layer based on nonlinear finite element method. The relationship
between the distance between the spudcan and the
footprint and the horizontal sliding force has been obtained.
Comparisons of simulation and experimental results showthat
the model in this paper can deal well with the combined
problems of sliding friction contact, fluid–solid coupling, and
convergence difficulty. The analytical resultsmay be useful to
jack-up installation workovers close to existing footprints.
關鍵詞
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Jack-up Existing footprint Spudcan–footprint interaction Numerical simulation Nonlinearity