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Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Dynamic response of a steel catenary riser at touch-down zone
https://orcid.org/0000-0001-6099-4842
https://orcid.org/0009-0004-7617-7977
https://orcid.org/0000-0002-3575-8810
Highlights This study presents a novel numerical model for analysing the dynamic response and fatigue damage of a global steel catenary riser (SCR) at the touch-down zone (TDZ). In the global SCR model, an innovative effective stress framework for SCR-seabed interaction is employed. It accurately captures the natural seabed response under complex cyclic loading, in contrast to conventional methods relying on a reduction factor for the entire seabed at the TDZ. This paper, developing the global SCR model, studies water entrainment, varying seabed properties, and floater heaving effects on SCR fatigue damage. Comprehending these factors is essential for a comprehensive understanding of SCR behavior in the TDZ.
Abstract This paper introduces a numerical model for analysing the dynamic response and fatigue damage of a global steel catenary riser (SCR) at the touch-down zone (TDZ). The model incorporates an innovative pipe-soil interaction model based on a new effective-stress framework to evaluate the changing soil strength induced by the cyclic motion of the SCR, thereby allowing for a more accurate assessment of the effects of soil remoulding and trenching on the dynamic responses of the SCR. The global SCR model is implemented in a commercial finite element software – ABAQUS, with the pipe-soil interaction model integrated through a user-defined element subroutine. A comprehensive series of time-domain simulations is conducted to investigate the evolution of seabed and the subsequent development of trenching along the seabed pipeline. These simulations provide valuable insights into the structural performance of the SCR at the TDZ. Additionally, this research explores the effects of water entrainment, changing seabed strength & stiffness, and the heaving motion of the floater on the fatigue damage of the global SCR. Understanding these factors is essential for obtaining an extensive understanding of the SCR's behaviour in the TDZ. The findings provide significant insights that can be leveraged to optimise existing design practices and enhance the efficiency and safety of offshore infrastructure.
Dynamic response of a steel catenary riser at touch-down zone
https://orcid.org/0000-0001-6099-4842
https://orcid.org/0009-0004-7617-7977
https://orcid.org/0000-0002-3575-8810
Highlights This study presents a novel numerical model for analysing the dynamic response and fatigue damage of a global steel catenary riser (SCR) at the touch-down zone (TDZ). In the global SCR model, an innovative effective stress framework for SCR-seabed interaction is employed. It accurately captures the natural seabed response under complex cyclic loading, in contrast to conventional methods relying on a reduction factor for the entire seabed at the TDZ. This paper, developing the global SCR model, studies water entrainment, varying seabed properties, and floater heaving effects on SCR fatigue damage. Comprehending these factors is essential for a comprehensive understanding of SCR behavior in the TDZ.
Abstract This paper introduces a numerical model for analysing the dynamic response and fatigue damage of a global steel catenary riser (SCR) at the touch-down zone (TDZ). The model incorporates an innovative pipe-soil interaction model based on a new effective-stress framework to evaluate the changing soil strength induced by the cyclic motion of the SCR, thereby allowing for a more accurate assessment of the effects of soil remoulding and trenching on the dynamic responses of the SCR. The global SCR model is implemented in a commercial finite element software – ABAQUS, with the pipe-soil interaction model integrated through a user-defined element subroutine. A comprehensive series of time-domain simulations is conducted to investigate the evolution of seabed and the subsequent development of trenching along the seabed pipeline. These simulations provide valuable insights into the structural performance of the SCR at the TDZ. Additionally, this research explores the effects of water entrainment, changing seabed strength & stiffness, and the heaving motion of the floater on the fatigue damage of the global SCR. Understanding these factors is essential for obtaining an extensive understanding of the SCR's behaviour in the TDZ. The findings provide significant insights that can be leveraged to optimise existing design practices and enhance the efficiency and safety of offshore infrastructure.
Dynamic response of a steel catenary riser at touch-down zone
https://orcid.org/0000-0001-6099-4842
https://orcid.org/0009-0004-7617-7977
https://orcid.org/0000-0002-3575-8810
Highlights This study presents a novel numerical model for analysing the dynamic response and fatigue damage of a global steel catenary riser (SCR) at the touch-down zone (TDZ). In the global SCR model, an innovative effective stress framework for SCR-seabed interaction is employed. It accurately captures the natural seabed response under complex cyclic loading, in contrast to conventional methods relying on a reduction factor for the entire seabed at the TDZ. This paper, developing the global SCR model, studies water entrainment, varying seabed properties, and floater heaving effects on SCR fatigue damage. Comprehending these factors is essential for a comprehensive understanding of SCR behavior in the TDZ.
Abstract This paper introduces a numerical model for analysing the dynamic response and fatigue damage of a global steel catenary riser (SCR) at the touch-down zone (TDZ). The model incorporates an innovative pipe-soil interaction model based on a new effective-stress framework to evaluate the changing soil strength induced by the cyclic motion of the SCR, thereby allowing for a more accurate assessment of the effects of soil remoulding and trenching on the dynamic responses of the SCR. The global SCR model is implemented in a commercial finite element software – ABAQUS, with the pipe-soil interaction model integrated through a user-defined element subroutine. A comprehensive series of time-domain simulations is conducted to investigate the evolution of seabed and the subsequent development of trenching along the seabed pipeline. These simulations provide valuable insights into the structural performance of the SCR at the TDZ. Additionally, this research explores the effects of water entrainment, changing seabed strength & stiffness, and the heaving motion of the floater on the fatigue damage of the global SCR. Understanding these factors is essential for obtaining an extensive understanding of the SCR's behaviour in the TDZ. The findings provide significant insights that can be leveraged to optimise existing design practices and enhance the efficiency and safety of offshore infrastructure.
Dynamic response of a steel catenary riser at touch-down zone
Gao, Zhenguo (Autor:in) / Wang, Weichen (Autor:in) / Zhou, Zefeng (Autor:in) / Yan, Yue (Autor:in) / Pradhan, Dhruba L. (Autor:in)
Engineering Structures ; 295
29.08.2023
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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