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A new ultimate capacity formula for unstiffened CHS T, TT and K-joints under axial brace loads

Lee, M., Wilmshurst, S.R., Makino, Y., Yamada, H. and Morita, M. (1997) A new ultimate capacity formula for unstiffened CHS T, TT and K-joints under axial brace loads In Proceedings of the Seventh (1997) International Offshore and Polar Engineering Conference,Honolulu, USA, May 25-30, 1997. International Society of Offshore and Polar Engineers., pp. 13-20.

Record type: Conference or Workshop Item (Paper)

Abstract

In order to make simple design equations for CHS joints, a new ultimate capacity formula for K-joints under axial loads is derived by a multiple regression analysis method and using the database of Makino et al. (1996). Although there are several failure modes in K-joints, an ultimate capacity formula for joints failing only by local deformation of the chord wall is derived in this study. The derived ultimate capacity formula can be used for K-joints, Tjoints, and TT-joints failing with no radial deformation of the chord wall between the braces. This formula represents the first stage of a continuous formula for hub joints where the braces are positioned around the chord circumference (e.g. T-, TT, X-, XT-, and XXjoints), and gap joints (i.e. joints with longitudinally spaced braces). The accuracy of the new ultimate capacity formula is slightly lower than the individual joint equations of Kurobane et al. (1984) and Paul et al. (1994), but it is simpler than the existing formulae.

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Published date: 1997

Identifiers

Local EPrints ID: 75326
URI: http://eprints.soton.ac.uk/id/eprint/75326
ISBN: 1880653281
PURE UUID: bd99c2ac-ee5f-469e-8116-53e33b2410f7

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Date deposited: 11 Mar 2010
Last modified: 18 Jul 2017 23:43

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Contributors

Author: M. Lee
Author: S.R. Wilmshurst
Author: Y. Makino
Author: H. Yamada
Author: M. Morita

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