Abstract
Monotonic lateral load model tests were carried out on steel skirted suction caissons embedded in the saturated medium sand to study the bearing capacity. A three-dimensional continuum finite element model was developed with Z_SOIL software. The numerical model was calibrated against experimental results. Soil deformation and earth pressures on skirted caissons were investigated by using the finite element model to extend the model tests. It shows that the “skirted” structure can significantly increase the lateral capacity and limit the deflection, especially suitable for offshore wind turbines, compared with regular suction caissons without the “skirted” at the same load level. In addition, appropriate determination of rotation centers plays a crucial role in calculating the lateral capacity by using the analytical method. It was also found that the rotation center is related to dimensions of skirted suction caissons and loading process, i.e. the rotation center moves upwards with the increase of the “skirted” width and length; moreover, the rotation center moves downwards with the increase of loading and keeps constant when all the sand along the caisson’s wall yields. It is so complex that we cannot simply determine its position like the regular suction caisson commonly with a specified position to the length ratio of the caisson.
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References
Ashour, M., Norris, G. and Pilling, P., 1998. Lateral loading of a pile in layered soil using the strain wedge model, Journal of Geotechnical and Geoenvironmental Engineering, 124(4): 303–315.
Bransby, M. F. and Randolph, M. F., 1998. Combined loading of skirted foundation, Géotechnique, 48(5): 637–655.
Byrne, B., Houlsby, G. and Martin, C. and Fish, P., 2002. Suction caisson foundations for offshore wind turbines, Wind Engineering, 26(3): 145–155.
Clayton, C. R. I., 2011. Stiffness at small strain: research and practice, Géotechnique, 61(1): 5–37.
El-Sherbiny, R. M., 2005. Performance of Suction Caisson Anchors in Normally Consolidated Clay, Ph. D. Thesis, the University of Texas at Austin.
Gourvenec, S. and Barnett, S., 2011. Undrain failure envelope for skirted foundations under general loading, Géotechnique, 61(3): 263–270.
Guo, Z., Wang, L. Z., Yuan, F. and Li, L. L., 2012. Model tests on installation techniques of suction caisson in a soft clay seabed, Appl. Ocean Res., 34, 116–125.
Jones, K., Bang, S. and Cho, Y., 2007. Pullout capacity of embedded suction anchors in sand, Ocean Eng., 34(16): 2107–2114.
Iskander, M., EI-Gharbawy, S. and Olson, R., 2002. Performance of suction caissons in sand and clay, J. Can. Geotech., 39(3): 576–584.
Kwang, D. J., Bang, S., Cho Y. and Cho, I. H., 2010. Embedded suction anchors for mooring of a floating breakwater, J. Offshore Mech. Arct. Eng., 132(2): 021603–021607.
Li, D. Y., Du, H. and Sun, Z. J., 2010. Offshore Skirted Suction Anchors, State Intellectual Property Office of China, ZL200920239914.8. (in Chinese)
Li, D. Y., Liu, X. L. and Sun, Z. J., 2011a. A novel type suction anchors for offshore wind turbines, Ocean Technology., 30(3): 83–87. (in Chinese)
Li, D. Y., Wang, M. and Liu, X. L., 2011b. Behaviour of installation of offshore skirted suction foundation in sand, The Ocean Eng., 29(1): 111–115; 148. (in Chinese)
Li, D. Y., Zhuang, Y. K. and Gao, Y. F., 2012. Model tests on penetration of suction anchors in medium-coarse sand, Chinese Journal of Geotechnical Engineering, 34(12): 2277–2283. (in Chinese)
Wang, J. H. and Yang, H. M., 2008. Model tests on horizontal cyclic bearing capacity of bucket foundations in soft clays, Rock and Soil Mechanics, 29(10): 2606–2612. (in Chinese)
Zace Services Ltd., 2011. Zsoil. Pc2011 Manual, Elmepress International, Lausanne, Switzerland.
Zhu, B., Kong, D. Q. and Tong, J. G., 2011. Model tests on penetration and pullout of suction caissons in silt, Chinese Journal of Geotechnical Engineering, 33(7): 1045–1053. (in Chinese)
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This study was financially supported by the National Natural Science Foundation of China (Grant No. 51078227) and Shandong Natural Science Foundation (Grant No. ZR2009FM003).
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Li, Dy., Zhang, Yk., Feng, Ly. et al. Response of skirted suction caissons to monotonic lateral loading in saturated medium sand. China Ocean Eng 28, 569–578 (2014). https://doi.org/10.1007/s13344-014-0046-z
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DOI: https://doi.org/10.1007/s13344-014-0046-z