Numerical analysis of pipeline in J-lay problem.

*(English)*Zbl 1202.74205Summary: 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.

##### MSC:

74S30 | Other numerical methods in solid mechanics (MSC2010) |

PDF
BibTeX
XML
Cite

\textit{L.-Z. Wang} et al., J. Zhejiang Univ., Sci. A 11, No. 11, 908--920 (2010; Zbl 1202.74205)

Full Text:
DOI

##### References:

[1] | Aubeny, C.P., Dunlap, W.A., 2003. Penetration of Cylindrical Objects in Soft Mud. Proc. IEEE Oceans, San Diego, CA, USA, p.2068-2073. |

[2] | Aubeny, C. P.; Shi, H.; Murff, J. D., Collapse loads for a cylinder embedded in trench in cohesive soil, International Journal of Geomechanics, 5, 320-325, (2005) |

[3] | Aubeny, C.P., Biscontin, G., Zhang, J., 2006. Seafloor Interaction with Steel Catenary Risers. Final Project Report, Texas A&M University, USA. |

[4] | Berteaux, H.O., 1976. Buoy Engineering. John Wiley and Sons, New York. |

[5] | Brando, P., Sebastiani, G., 1971. Determination of Sealines Elastic Curves and Stresses to be Expected during Operation. Third Annual Offshore Technology Conference, Houston, Texas, OTC 1354. |

[6] | Bridge, C., Laver, K., Clukey, E., Evans, T., 2004. Steel Catenary Riser Touchdown Point Vertical Interaction Models. Offshore Technology Conference, Houston, Texas, OTC 16628, p. 1-8. |

[7] | Burgess, J. J., The deployment of an undersea cable system in sheared current, Proceedings of BOSS, 2, 327-334, (1994) |

[8] | Casarella, M. J.; Parsons, M., Cable systems under hydrodynamic loading, Marine Technology Society Journal, 4, 27-44, (1970) |

[9] | Cheuk, C. Y.; White, D. J.; Dingle, H. R.C., Upper bound plasticity analysis of a partially-embedded pipe under combined vertical and horizontal loading, Soils and Foundations, 48, 133-140, (2008) |

[10] | Dixon, D. A.; Rultledge, D. R., Stiffened catenary calculation in pipeline laying problem, Journal of Engineering for Industry, 90B, 153-160, (1968) |

[11] | Guarracino, F.; Mallardo, V., A refined analytical analysis of submerged pipelines in seabed laying, Applied Ocean Research, 21, 281-293, (1999) |

[12] | Langner, C.G., 1984. Relationships for Deepwater Suspended Pipe Spans. Proc. Offshore Mechanics and Arctic Engineering Symposium, New Orleans, Louisiana, p.552-558. |

[13] | Lenci, S.; Callegari, M., Simple analytical models for the J-lay problem, Acta Mechanica, 178, 23-39, (2005) · Zbl 1078.74008 |

[14] | Li, Z. G.; Wang, C.; He, N.; Zhao, D. Y., An overview of deepwater pipeline laying technology, China Ocean Engineering, 22, 521-532, (2008) |

[15] | Liang, Z.T., 2008. Analysis on Mechanical Performance for Deep-water Pipe-laying. MS Thesis, Zhejiang University, China (in Chinese). |

[16] | Merifield, R. S.; White, D. J.; Randolph, M. F., The ultimate undrained resistance of partially embedded pipelines, Géotechnique, 58, 461-470, (2008) |

[17] | Merifield, R. S.; White, D. J.; Randolph, M. F., Effect of surface heave on response of partially embedded pipelines on Clay, Journal of Geotechnical and Geoenvironmental Engineering, 135, 819-829, (2009) |

[18] | Morison, J. R.; O’Brien, M. P.; Johnson, J. W.; Schaaf, S. A., The force exerted by surface waves on piles, Petroleum Transactions, AIME, 189, 149-154, (1950) |

[19] | Murff, J. D.; Wanger, D. A.; Randolph, M. F., Pipe penetration in cohesive soil, Géotechnique, 39, 213-229, (1989) |

[20] | Palmer, A. C.; Hutchinson, G.; Ells, W. J., Configuration of submarine pipelines during laying operations, Journal of Engineering for Industry, 96, 1112-1118, (1974) |

[21] | Perinet, D., Frazer, I., 2007. J-lay and Steep S-lay: Complementary Tools for Ultra Deep Water. Houston, Texas, OTC 18669. |

[22] | Plunkett, R., Static bending stresses in catenaries and drill strings, Journal of Engineering for Industry, 39B, 31-36, (1967) |

[23] | Powers, J.T., Finn, L.D., 1969. Stress Analysis of Offshore Pipelines during Installation. First Annual Offshore Technology Conference, Houston, Texas, OTC 1071. |

[24] | Pulici, M., Trifon, M., Dumitrescu, A., 2003. Deep Water Sealines Installation by Using J-lay Method—The Blue Stream Project. Proceedings of the Thirteenth International Offshore and Polar Engineering Conference, Honolulu, Haiwaii, p.38-43. |

[25] | Vaz, M. A.; Paten, M. H., Three-dimensional behavior of elastic marine cables in sheared currents, Applied Ocean Research, 22, 45-53, (2000) |

[26] | Wasow, W., Singular perturbations of boundary value problems for nonlinear differential equations of second order, Communications on Pure and Applied Mathematics, 9, 93-113, (1956) · Zbl 0074.30502 |

[27] | Wilson, B.W., 1960. Characteristics of Anchor Cables in Uniform Ocean Currents. Technical Report No. 204-1, Texas A&M University, USA. |

[28] | Zhou, J., 2008. Investigation on Configuration and Construction Technics of S-lay for Deepwater Submarine Pipelines. MS Thesis, Zhejiang University, China (in Chinese). |

This reference list is based on information provided by the publisher or from digital mathematics libraries. Its items are heuristically matched to zbMATH identifiers and may contain data conversion errors. It attempts to reflect the references listed in the original paper as accurately as possible without claiming the completeness or perfect precision of the matching.