Numerical analysis of pipeline in J-lay problem |
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Authors: | Li-zhong Wang Feng Yuan Zhen Guo and Ling-ling Li |
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Institution: | (1) College of Architecture and Engineering, University of Applied Sciences, Fribourg, Switzerland;(2) Department of Wood Science, University of British Columbia, Vancouver, BC, Canada;(3) Timber and Composite Construction, Bern University of Applied Sciences, Biel, Switzerland |
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Abstract: | The pipe configuration and internal loads along the pipeline during the pipeline laying process have long been the focus of
engineers. Most researchers simplify the seabed to be rigid and the water to be calm, ignoring the pipe embedment into the
seabed and the influence of ocean currents. In this paper, a novel numerical approach is proposed for the laying of pipelines
in the so-called J-lay method, taking into account the importance of both pipe embedment and ocean currents. The pipeline
is divided into two parts, one part suspended in water, and the other laid on the seabed. The continuity of the two parts
at the touch down point (TDP) is guaranteed to make a whole. The feasibility of the model is proved by the comparison between
the present model and an analytical model, which shows good agreement in both pipeline configuration and bending moment distribution.
Finally, parametric study was performed to consider the influence of current velocity, water depth, top inclination angle,
and seabed stiffness, and conclusions are drawn. |
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Keywords: | |
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