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Strength of multiplaner tubular KK-joints under anti-symmetrical axial loading

Lee, M. and Wilmshurst, S.R. (1996) Strength of multiplaner tubular KK-joints under anti-symmetrical axial loading Journal of Structural Engineering, 123, (6), pp. 149-156. (doi:10.1061/(ASCE)0733-9445(1997)123:6(755)).

Record type: Article


A parametric study is presented of the ultimate strength of multiplanar KK-joints in circular hollow sections, which are commonly found in both onshore and offshore structures. The study was carried out using a well-calibrated and validated finite-element model, and the joints were subjected to antisymmetrical axial loading. In all, 40 joints were analyzed to investigate the effect of the various geometric parameters on static strength. Those joints that failed by chord bending can be divided into two groups: one with cracking occurring in the transverse gap region and the other with cracking occurring in the longitudinal gap region. This finding is in accord with experimental evidence from previous research. The finite-element data and the existing test and numerical data form a database on which multiple regression analysis was carried out. Two sets of strength equations were developed from the regression analysis: one provides correction functions that can be applied to an existing planar K-joint equation and the other relates the nondimensional strength directly to the geometric parameters. Both sets of equations were found to provide strength predictions to a very high degree of accuracy.

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Accepted/In Press date: June 1996
Additional Information: Originally presented at the 7th International Symposium on Tubular Structures, Miskolc, Hungary,1996


Local EPrints ID: 74210
ISSN: 0733-9445
PURE UUID: 8bf21042-d097-4b73-8c21-0c4d657ed988

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Date deposited: 11 Mar 2010
Last modified: 18 Jul 2017 23:47

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Author: M. Lee
Author: S.R. Wilmshurst

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