Traditionally, an analytical model of an offshore structure is composed of beam-column elements rigidly interconnected. However, considerable flexibility exists at the joints where chord outer wall deforms locally, and produces flexibility. In this paper, a new elastic joint element is introduced to consider the local flexibilities for TY- and K-type tubular joints. The element is developed on the basis of flexibility matrix and it is implemented in a finite-element programme to account for local joint flexibility effects in numerical models of steel structures made from tubular members. The element is suitable for modelling of multi-brace, uni-planar tubular joints. The results are validated by more sophisticated model using multi-purpose programmes and compared against conventional rigid-joint models. Based on the results of this study, it is concluded that incorporating the effects of joint flexibility results in more realistic response prediction of offshore structures.
Elastic tubular joint element for modelling of multi-brace, uni-planar tubular connections
Ships and Offshore Structures ; 10 , 4 ; 404-415
2015-07-04
12 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Elastic tubular joint element for modelling of multi-brace, uni-planar tubular connections
Online Contents | 2015
|Outer-Brace Stress Concentration Factors of Offshore Two-Planar Tubular DKT-Joints
BASE | 2012
|