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S.H.J. van Es
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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.
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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.
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.
...
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.
In this study, the bending behaviour of tubular members is investigated. The thesis consists of four parts:
Part I: Literature study of the bending behaviour of tubular members
Part II: Spiral-welded tubes for application in combined walls
Part III: Deformation of buried pipelines crossing active strike-slip faults
Part IV: Closure
In Part I, a literature study of the bending of tubular members is presented. In Parts II and III, two more specific topics within this broad field of research are discussed. In a final part of the thesis, an evaluation of the performed research is presented.
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In this study, the bending behaviour of tubular members is investigated. The thesis consists of four parts:
Part I: Literature study of the bending behaviour of tubular members
Part II: Spiral-welded tubes for application in combined walls
Part III: Deformation of buried pipelines crossing active strike-slip faults
Part IV: Closure
In Part I, a literature study of the bending of tubular members is presented. In Parts II and III, two more specific topics within this broad field of research are discussed. In a final part of the thesis, an evaluation of the performed research is presented.