Abstract
Bundled hybrid offset riser (BHOR) global strength analysis, which is more complex than single line offset riser global strength analysis, was carried out in this paper. At first, the equivalent theory is used to deal with BHOR, and then its global strength in manifold cases was analyzed, along with the use of a three-dimensional nonlinear time domain finite element program. So the max bending stress, max circumferential stress, and max axial stress in the BHOR bundle main section (BMS) were obtained, and the values of these three stresses in each riser were obtained through the “stress distribution method”. Finally, the Max Von Mises stress in each riser was given and a check was made whether or not they met the demand. This paper provides a reference for strength analysis of the bundled hybrid offset riser and some other bundled pipelines.
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Foundation item: Supported by the National Natural Science Foundation of China (Grant No.51009033).
William C. Webster is a professor at University of California, Berkeley. His research includes investigations into nonlinear coupled motions of offshore structures, operations research, shallow water fluid mechanics, steep water waves and wave energy. He has studied the optimization, hydroelastic response, and feasibility of large-scale floating runways.
Zhuang Kang was born in 1978. He is an associate professor at the Deepwater Research and Engineering Center, Harbin Engineering University. His current research focuses on the analysis of riser vortex induced vibration and experiments of offshore structures.
Wenzhou Liang was born in 1986. He is a graduate student of Harbin Engineering University. His current research interests include riser and VIV research.
Youwei Kang was born in 1987. He is a graduate student of Harbin Engineering University. His current research interests include riser and VIV research.
Liping Sun was born in 1962. She is a professor of Harbin Engineering University. Her current research interests include deepwater technology.
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Webster, W.C., Kang, Z., Liang, W. et al. Bundled hybrid offset riser global strength analysis. J. Marine. Sci. Appl. 10, 465–470 (2011). https://doi.org/10.1007/s11804-011-1092-z
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DOI: https://doi.org/10.1007/s11804-011-1092-z