Study of the force and deformation characteristics of subsea mudmat-pile hybrid foundations

• Autorzy: Kong D. , Deng M. , Liu Y. , Tan X.

Identyfikatory

DOI

10.2478/pomr-2018-0111

• Języki publikacji: EN

Abstrakty

EN

To study the force and deformation characteristics of subsea mudmat-pile hybrid foundations under different combined loads, a project at a water depth of 200 m in the South China Sea was studied. A numerical model of a subsea mudmatpile hybrid foundation is developed using the numerical simulation software FLAC3D. The settlement of the seabed soil, the bending moments of the mudmat, and the displacements and bending moments along the pile shaft under different load combinations, including vertical load and horizontal load, vertical load and bending moment, and horizontal load and bending moment load, are analyzed. The results indicate that settlement of the seabed soil is reduced by the presence of piles. The settlement of the mudmat is reduced by the presence of piles. Different degrees of inclination occur along the pile shaft. The angle of inclination of pile No. 1 is greater than that of pile No. 2. The dip directions of piles No. 1 and No. 2 are identical under the vertical load and bending moment and are opposite to those under the other combined loads. The piles that are located at the junctions between the mudmat and the tops of the piles are easily destroyed.

Słowa kluczowe

EN

subsea mudmat-pile hybrid foundations; force characteristics; deformation characteristics; combined loads

• Wydawca: Gdańsk University of Technology, Faculty of Ocean Engineering & Ship Technology
• Czasopismo: Polish Maritime Research
• Rocznik: 2018
• Tom: S 3
• Strony: 43--53
• Opis fizyczny: Bibliogr. 22 poz., rys., tab.

Twórcy

autor

Kong D.

• College of Civil Engineering and Architecture Shandong University of Science and Technology Qingdao Shandong 266590 China
• Shandong Provincial Key Laboratory of Civil Engineering Disaster Prevention and Mitigation, Shandong University of Science and Technology, China

autor

Deng M.

• College of Civil Engineering and Architecture Shandong University of Science and Technology Qingdao Shandong 266590 China
• Shandong Provincial Key Laboratory of Civil Engineering Disaster Prevention and Mitigation, Shandong University of Science and Technology, China

autor

Liu Y.

• College of Civil Engineering and Architecture Shandong University of Science and Technology Qingdao Shandong 266590 China
• Shandong Provincial Key Laboratory of Civil Engineering Disaster Prevention and Mitigation, Shandong University of Science and Technology, China

autor

Tan X.

• Shandong Xingke Intelligent Technology Co., Ltd., China

Bibliografia

• 1. Bransby, M.F., Brown, M.J., Knappett, J.A.: Vertical capacity of grillage foundations in sand. Revue Canadienne De Géotechnique, 2011, 48(8), Pp. 1246-1265.
• 2. Brown, M.J., Bransby, M.F., Knappett, J.A.: The vertical capacity of grillage foundations. Géotechnique, 2012, 62(3), Pp. 201-211.
• 3. Chen, G.S., Liu, R.: Upper bound solutions of horizontal bearing capacity of skirted mudmat in sand. Journal of Tianjin University (Natural science and Engineering Technology Edition), 2018, 53(3), Pp. 264-270.
• 4. Guan, W.W., Chen, L.: International vision of marine renewable energy management. Modern Economic Information, 1, Pp. 20-22.
• 5. He, Q., Wang, P.: Current Situation and prospect of deep-sea energy development. Ocean Development and Management, 2017, 34(12), Pp. 66-71.
• 6. Liu, B., Han, Y.H.: FLAC principles, examples and application guides. Communications Press, Beijing, 2005, pp. 67-68.
• 7. Lian, J.J., He, W., Wu, M.D.: Experimental study of bearing characteristic of bucket foundation of offshore wind turbine with bulkheads. Rock and Soil Mechanics, 2016, 37(10), Pp. 1-8.
• 8. Liu, R., Chen, G.S.: Upper bound solutions of vertical bearing capacity of skirted mudmat in sand. The Ocean Engineering, 2015, 34(4), Pp. 45-52.
• 9. Liu, R., Liu, M.M., Yang, S.G.: Bearing capacity of different shape mudmat foundations for subsea production system on undrained clays. Acta Oceanologica Sinica, 2016, 38(3), Pp. 131-144.
• 10. Liu, Y.M., Xu, D.P.: FLAC/FLAC3D foundation and engineering examples. Water Conservancy and Hydropower Press, Beijing 2008, Pp. 172-173.
• 11. Tan, Y., Liu, M.: Structure analysis of mudmat foundation for subsea production system. Ship & Ocean Engineering, 2012, 41(4), Pp. 133-135,141.
• 12. Xu, M.: Study of structural improvement of Mudmat in deep sea subsea system. Master’s thesis, Tianjin University, Tianjin, China. 2015.
• 13. Xu, M., Yang, S.G., Wang, H.: Study of structural improvement of mudmat in the subsea system. Marine Science Bulletin, 2016, 35(4), Pp. 436-442.
• 14. Yun, G.J., Alasdair, M., John, O.: Undrained capacity of surface footings subjected to combined V-H-T loading. Proceedings in the Nineteenth International Offshore and Polar Engineering Conference. Osaka. 2009, Pp. 9-14.
• 15. Zhou, L., Liu, R., Guo, S.Z.: A dynamic simulation method for continuous spud can penetration. Journal of Earthquake Engineering, 2015, 37(2), Pp. 460-466.
• 16. Zhao, W.G., Liu, Y.T., Wang, W.S.: Current situation and development of marine renewable energy power generation. Smart Grid, 2015, 3(6), Pp. 493-499.
• 17. Ku Mohd Razali, K.H.N.S., Kasim, S., Hassan, R., Mahdin, H., Ramli, A.A., Md Fudzee, M.F., Salamat, M.A.: Lensalyza Photography Studio Reservation System. Acta Electronica Malaysia, 2018, 2(2), Pp. 06-09.
• 18. Li, B.Q., Li, Z.: Design of Automatic Monitoring System for Transfusion. Acta Electronica Malaysia, 2018, 2(1), Pp. 07-10.
• 19. Luo, X.: Research on Anti-Overturning Performance of Multi-Span Curved Girder Bridge with Small Radius. Acta Mechanica Malaysia, 2017, 1(1), Pp. 11-15.
• 20. Luo, X.: Study on PC Continuous Girder mechanical properties Based on Tendon Tensioning Pattern. Acta Mechanica Malaysia, 2017, 1(1), Pp. 16-20.
• 21. De’nan, F., Hasan, H., Mahzuz, M.: Behaviour of the beam to column connection for tapered steel section with perforation. Engineering Heritage Journal, 2017, 1(1), Pp. 41-44.
• 22. Kumar, R.: Comparison of Instruction Scheduling And Register Allocation For Mips And Hpl -Pd Architecture For Exploitation Of Instruction Level Parallelism. Engineering Heritage Journal, 2018, 2(2), Pp. 04-08.

Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).