Numerical modelling of seepage beneath skirted foundations subjected to vertical uplift

1. Abstract This paper reviews, from the author's particular perspective, the history of the application of finite element analysis in geotechnical engineering for the offshore over the past 30 years, with emphasis on the unique and dominant role of Abaqus analysis in that history. The paper covers foundation performance issues and applications for pile-founded, gravity base, and deep water structures. Applications to both exploration and production structures are treated. Many of the significant applications were complemented by extensive experimental test programs to confirm or validate the analyses. Example analyses discussed include loading from waves and earthquakes as well as subsidence effects. The examples include applications of a wide variety of Abaqus element and material types as well as use of procedures for static, dynamic and soil consolidation analysis. The paper discusses the application of Abaqus' geotechnical capabilities throughout their development and into the present, and it provides suggestions for further development of new capabilities to meet emerging needs.

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Finite Element Analysis in Offshore Geotechnics - A Thirty-Year Retrospective

This article presents a numerical modeling and verification on a new grouting technique, called mold bag prestress reinforcing method, which was successfully used for grouting control on seepage fa...

Numerical modeling and verification of grouting with mold bag treatment on seepage failure in foundation excavation

Controlling subsea oil and gas production systems fibre optics, power cables and tubes for the chemical for in jection and fluid for hydraulic are arranged in helical bundles in successive layers. Shaped thermoplastic fillers a re used to separate components and out voids in the cross section. If necessary, armour provide strength for the dynamic loads. This paper describes the application of 3D finite element method to assess the structural Integrity of subsea umbilicals, including the interaction between the constituent elements. uses a global analysis to determine the internal force analyses (sub-modelling) for detailed stress evaluation. is used for this purpose, due to its capability problems under severe discontinuities due contact conditions. This paper also discusses the umbilicals interaction w seabed. The focus of this paper is on the fatigue life calculation.

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Mohammad Kabir Hossain

Papers

Suction Caisson Foundation Design for Vortex-Induced Vibration Loading

Subsea Umbilical Stability Analysis