Abstract
A prediction model of the deepwater steel catenary riser VIV is proposed based on the forced oscillation test data, taking into account the riser-seafloor interaction for the cross-flow VIV-induced fatigue damage at touch-down point (TDP). The model will give more reasonable simulation of SCR response near TDP than the previous pinned truncation model. In the present model, the hysteretic riser-soil interaction model is simplified as the linear spring and damper to simulate the seafloor, and the damping is obtained according to the dissipative power during one periodic riser-soil interaction. In order to validate the model, the comparison with the field measurement and the results predicted by Shear 7 program of a full-scale steel catenary riser is carried out. The main induced modes, mode frequencies and response amplitude are in a good agreement. Furthermore, the parametric studies are carried out to broaden the understanding of the fatigue damage sensitivity to the upper end in-plane offset and seabed characteristics. In addition, the fatigue stress comparison at TDP between the truncation riser model and the present full riser model shows that the existence of touch-down zones is very important for the fatigue damage assessment of steel catenary riser at TDP.
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References
Aubeny, C. P., Biscontin, G. and Zhang, J., 2006. Seafloor Interaction with Steel Catenary Risers, Report, Texas: Texas A&M University.
Aubeny, C. P. and Biscontin, G., 2009. Seafloor-riser interaction model, Int. J. Geomech., ASCE, 9(3): 133–141.
Bridge, C. and Laver K., 2004. Steel catenary riser touchdown point vertical interaction models, Offshore Technology Conference, Houston, Texas, USA, OTC 16628.
DNV, 2005. Fatigue Design of Offshore Steel Structures, DNV-RP-C203, Norway.
Gao, Y. and Zong, Z., 2011. Numerical prediction of fatigue damage in steel catenary riser due to vortex-induced vibration, Journal of Hydrodynamics, 23(2): 154–163.
Gopalkrishnan, R., 1993. Vortex Induced Forces on Oscillating Bluff Cylinders, Department of Ocean Engineering, MIT, Cambridge, USA.
Larsen, C. M. and Vikestad, K., 2005. VIVANA-Theory Manual (Version 3.4), Norwegian Marine Technology Research Institute, Trondheim, Norway.
Leira, B. J. and Passano, E., 2004. Analysis guidelines and application of a riser-soil interaction model including trench effects, Proc. 23rd Int. Conf. Offshore Mech. Arctic Eng. (OMAE2004), British, Canada, 51527.
Mark Chang, S. H. and Isherwood, M., 2003. Vortex-induced vibrations of steel catenary risers and steel offloading lines due to platform heave motions, Offshore Technology Conference, Houston, Texas, U.S.A, OTC 15106.
Nakhaee, A. and Zhang, J., 2010. Trenching effects on dynamic behavior of a steel catenary riser, Ocean Eng., 37(2–3): 277–288.
Narakorn, S., Marian, W. and Patrick, O. B., 2009. Reduced-order modeling of vortex-induced vibration of catenary riser, Ocean Eng., 36(17–18): 1404–1414.
Nicholas, M. D. and Bridge, C., 2007. Measured VIV response of a deepwater SCR, Proc. 17th Int. Offshore Polar Eng. Conf. (ISOPE2007), Lisbon, Portugal, JSC-473.
Randolph, M. and Quiggin, P., 2009. Non-linear hysteretic seabed model for catenary pipeline contact, Proc. 28th Int. Conf. Ocean, Offshore Arctic Eng. (OMAE2009), Honoluu, Hawaii, 79259.
Rao, Z. B., Fu, S. X. and Yang, J. M., 2011. Vortex-induced vibration analysis of steel catenary riser. J. Ship Mech., 15(3): 245–258.
Vandiver, J. K. and Li, L., 2005. SHEAR7 V4.4 Program Theoretical Manual, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.
Venugopal, M., 1996. Damping and Response of a Flexible Cylinder in a Current, Department of Ocean Engineering, MIT, Cambridge, USA.
Wang, K. P., Xue, H. X. and Tang, W. Y., 2011. Dynamic response analysis of deepwater steel catenary riser based on the seabed-suction and stiffness-degradation model, Journal of Shanghai Jiaotong University, 45(4): 585–589. (in Chinese)
Willis, N., 2001. STRIDE PROJECT-Steel Riser in Deepwater Environments-Recent Highlights, Proc. 24th Deepwater and Ultra Deepwater Riser Conference, 2H Offshore LTD.
Willis, N. R. T. and West, P. T. J., 2001. Interaction between deepwater steel catenary riser and a sloft seabed: Large scale sea trials, Proceedings of Offshore Technology Conference, Houston, USA, OTC 13113.
Xue, H. X., Tang, W. Y. and Zhang, S. K., 2009. Simplified model for evaluation of VIV-induced fatigue damage of deepwater marine risers, Journal of Shanghai Jiaotong University (Science), 14(4): 435–442.
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The work was financially supported by the National Natural Science Foundation of China (Grant No. 51009089), and the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20100073120017).
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Wang, Kp., Tang, Wy. & Xue, Hx. Cross-flow VIV-induced fatigue damage of deepwater steel catenary riser at touch-down point. China Ocean Eng 28, 81–93 (2014). https://doi.org/10.1007/s13344-014-0006-7
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DOI: https://doi.org/10.1007/s13344-014-0006-7