Strain-based design procedures for spiral-welded steel tubes in combined walls

Conference paper (2016)

Authors

S.H.J. van Es Steel & Composite Structures - CEG
D Vasilikis University of Thessaly
SA Karamanos University of Thessaly
Research Group
Steel & Composite Structures (CEG) (TU Delft)
Copyright: © 2016 A.M. Gresnigt, S.H.J. van Es, D Vasilikis, SA Karamanos
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Published Date

2016

Language

English

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Faculty

Civil Engineering & Geosciences

Department

Engineering Structures

Research Group

Steel & Composite Structures

Abstract

To investigate the structural behaviour of large-diameter spiral-welded steel tubes under bending, a full scale experimental program has been performed, consisting of thirteen 42-inch diameter, spiral-welded steel tubes with D/t ratios ranging between 65 and 120. Additionally, numerical studies have been conducted, using nonlinear finite element simulations. A model has been developed to simulate the performed tests, using the actual material properties and initial geometric imperfections obtained from the tested tubes. Finally, a parametric investigation has been performed that investigates the influence of initial geometric imperfections and presence of girth and coil connection welds on the bending behaviour of the considered tubes.