Abstract
Air floating transport is one of the key construction technologies of bucket foundation. The influences of draft, water depth and bucket spacing on the motion response characteristics of tetrapod bucket foundation (TBF) during air-floating transportation were studied by models tests. The results showed that with the increase of draft, the natural periods of heave motion increased, while the maximum amplitudes of oscillating motion decreased. The maximum amplitudes of heave motion decreased while pitch motion increased with the increasing of water depth; further, the period range of oscillating amplitude close to the maximum amplitude was expanded due to shallow water effect. With increasing bucket spacing, the maximum amplitudes of heave motion first increase and then decreased, whereas the maximum amplitudes of pitch motion decreased. Therefore, the favorable air-floating transportation performance can be achieved by choosing a larger bucket spacing under the condition of meeting the design requirements and reducing the draft under shallower water.
Similar content being viewed by others
References
Bie, S.A., Ji, C.N., Ren, Z.J. and Li, Z.Z., 2002. Study on floating properties and stability of air floated structures, China Ocean Engineering, 16(2), 263–272.
Byrne, B.W., Houlsby, G.T., Martin, C. and Fish, P., 2002. Suction caisson foundations for offshore wind turbines, Wind Engineering, 26(3), 145–155.
Cheung, K.F., Phadke, A.C., Smith, D.A., Lee, S.K. and Seidl, L.H., 2000. Hydrodynamic response of a pneumatic floating platform, Ocean Engineering, 27(12), 1407–1440.
Ding, H.Y., Liu, Y.G., Zhang, P.Y. and Le, C.H., 2015. Model tests on the bearing capacity of wide-shallow composite bucket foundations for offshore wind turbines in clay, Ocean Engineering, 103, 114–122.
Ding, H.Y., Zhu, Y., Zhang, P.Y., Le, C.H. and Han, Y.Q., 2016. Research on the heave motion characteristics of a towed large air floating caisson, Journal of Harbin Engineering University, 37(12), 1665–1670. (in Chinese)
Fu, D.F., Bienen, B., Gaudin, C. and Cassidy, M., 2014. Undrained capacity of a hybrid subsea skirted mat with caissons under combined loading, Canadian Geotechnical Journal, 51(8), 934–949.
Guret, R. and Hermans, A.J., 2001. An air cushion under a floating offshore structure, Proceedings of the 16th International Workshop on Water Waves and Floating Bodies, Hiroshima, 45–49.
He, F., Huang, Z.H. and Law, A.W.K., 2012. Hydrodynamic performance of a rectangular floating breakwater with and without pneumatic chambers: an experimental study, Ocean Engineering, 51, 16–27.
Houlsby, G.T., Ibsen, L.B. and Byrne, B.W., 2005. Suction caissons for wind turbines, Frontiers in Offshore Geotechnics: ISFOG 2005, Taylor & Francis Group, London, pp. 75–93.
Ikoma, T., Masuda, K., Rheem, C.K. and Maeda, H., 2006. Response reduction of motion and steady wave drifting forces of floating bodies supported by aircushions in regular waves, Proceedings of the 25th International Conference on Offshore Mechanics and Arctic Engineering, ASME, Hamburg, 371–377.
Lars, B.I., 2012. The bucket foundation and its competitiveness versus monopiles and jacket structures, Proceedings of the International Conference in Research at Alpha Ventus, Germany, Bremerhaven.
Lee, C.H. and Newman, J.N., 2000. Wave effects on large floating structures with air cushions, Marine Structures, 13(4–5), 315–330.
Lee, C.H. and Newman, J.N., 2016. An extended boundary integral equation for structures with oscillatory free-surface pressure, International Journal of Offshore and Polar Engineering, 26(1), 41–47.
Liu, X.Q., 2012. Study on Stability and Dynamic Response in Towing of Air-Floating Bucket Foundation, Ph.D. Thesis, Tianjin University, Tianjin. (in Chinese)
Liu, X.Q., Zhang, P.Y., Zhao, M.J., Ding, H.Y. and Le, C.H., 2019a. Air-floating characteristics of large-diameter multi-bucket foundation for offshore wind turbines, Energies, 12(21), 4108.
Liu, X.Q., Zhang, P.Y., Zhao, M.J., Ding, H.Y. and Le, C.H., 2019b. Influencing factor of motion responses for large diameter tripod bucket foundation, Applied Sciences, 9(22), 4957.
Malenica, Ŝ. and Zalar, M., 2000. An alternative method for linear hydrodynamics of air cushion supported floating bodies, Proceedings of the 16th International Workshop on Water Waves and Floating Bodies, WWWFB, Caesarea, pp. 1–4.
Malenica, Ŝ. and Zalar, M., 2001. Semi analytical solution for heave radiation of the air cushion supported vertical circular cylinder in water of finite depth, Proceedings of the 16th International Workshop on Water Waves and Floating Bodies, WWWFB, Caesarea, pp. 1–4.
Pinkster, J.A., 1997. The effect of air cushions under floating offshore structures, Proceedings of the Behaviour of Offshore Structures (BOSS’ 97), Delft University of Technology, Delft, pp. 1–17.
Pinkster, J.A., Fauzi, A., Inoue, Y. and Tabeta, S., 1998. The behaviour of large air cushion supported structures in waves, Proceedings Second International Conference on Hydroelasticity in Marine Technology, Fukuoka, pp. 497–509.
Qi, X.Y., 1994. Experimental study on behaviour of an open bottom floating platform in wave, wind and current, Proceedings of the Fourth International Offshore and Polar Engineering Conference, ISOPE, Osaka, pp. 334–337.
Qi, X.Y., 1998. Behaviour of an open bottom floating platform in wave, wind and current, Journal of Ship Mechanics, 2(2), 8–12.
Seidl, L.H., 1980. Development of An Air Stabilized Platform, University of Hawaii, Department of Ocean Engineering Technical Report submitted to US Department of Commerce, Maritime Administration, pp. 88.
Thiagarajan, K.P., 2009. Hydrostatic stability of compartmented structures supported by air cushions, Journal of Ship Research, 53(3), 151–158.
Van Kessel, J.L.F., 2010. Aircushion Supported Mega-Floaters, Ph.D. Thesis, Delft University of Technology, Delft.
Van Kessel, J.L.F. and Pinkster, J.A., 2007a. The effect of aircushion division on the structural loads of large floating offshore structures, Proceedings of 2007 26th International Conference on Offshore Mechanics and Arctic Engineering, ASME, San Diego, pp. 687–696.
Van Kessel, J.L.F. and Pinkster, J.A., 2007b. Wave-induced structural loads on different types of aircushion supported structures. Proceedings of the 17th International Offshore and Polar Engineering Conference, ISOPE, Lisbon, pp. 3794–3801.
Zhang, P.Y., Han, Y.Q., Ding, H.Y. and Zhang, S.Y., 2015. Field experiments on wet tows of an integrated transportation and installation vessel with two bucket foundations for offshore wind turbines, Ocean Engineering, 108, 769–777.
Zhang, X.D., 2018. The Analysis of Diffraction and Heave Dynamic Performance for A Floating Wind Turbine Platform Supported by Aircushion, MSc. Thesis, Harbin Engineering University, Harbin. (in Chinese)
Funding
This work was financially supported by the National Natural Science Foundation of China (Grant No. 52171274), the National Key Research and Development Project (Grant No. 2018YFC0810402), Chongqing Elite Innovation and Entrepreneurship Demonstration Team (Grant No. CQYC201903204), Chongqing Special Post-Doctoral Science Foundation (Grant No. XM2019) and the State Key Laboratory of Hydraulic Engineering Simulation and Safety (Tianjin University) (Grant No. HESS-12).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Liu, Xq., Le, Ch., Zhao, Mj. et al. Experimental Study on Influencing Factors of Motion Responses for Air-Floating Tetrapod Bucket Foundation. China Ocean Eng 36, 258–267 (2022). https://doi.org/10.1007/s13344-022-0022-y
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s13344-022-0022-y