مقاله Geometrically parametric study of central brace SCFs in offshore three-planar tubular KT-joints : تی پی بین

خلاصه مقاله

In the present paper, a set of geometrically parametric FE stress analyses is carried out for right-angle three-planar tubular KT-joints under three different axial loading conditions. Three-planar KT-joints are one of the most important joint types in the six-legged offshore jacket-type structures since they connect the bracing members to the main legs of the jacket template. The analysis results are used to present general remarks on the effect of geometrical characteristics on the stress concentration factors (SCFs) at different saddle positions on the central braces. Based on the results of FE analyses which are verified against the experimental data, a complete set of SCF databases is developed. Afterwards, through nonlinear regression analysis, a new set of SCF design equations is established for the fatigue design of three-planar KT-joints under three different axial load cases. An assessment study of these equations is conducted against the experimental data and the acceptance criteria proposed by the UK Department of Energy (DoE).

نویسندگان

Hamid Ahmadi [ Faculty of Civil Engineering, University of Tabriz, Tabriz, Iran ]

Mohammad Ali Lotfollahi-Yaghin [ Faculty of Civil Engineering, University of Tabriz, Tabriz, Iran ]

کلمات کلیدی

Offshore jacket type structure Three planar KT joint Fatigue design Stress concentration factor (SCF) Parametric equation

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Journal of Constructional Steel Research

The Journal of Constructional Steel Research provides an international forum for the presentation and discussion of the latest developments in structural steel research and their applications. It is aimed not only at researchers but also at those likely to be most affected by research results, i.e. designers and fabricators. Original papers of a high standard dealing with all aspects of steel research including theoretical and experimental research on elements, assemblages, connection and material properties are considered for publication.

حوزه های تحت پوشش : Constructional Steel