Smart Structures and Systems

  • 제15권2호
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  • Pages.299-314
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  • 2015
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  • 1738-1584(pISSN)
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  • 1738-1991(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Application of numerical simulation of submersed rock-berm structure under anchor collision for structural health monitoring of submarine power cables

  • Woo, Jinho (Department Ocean Engineering, Pukyong National University) ;
  • Kim, Dongha (Department Ocean Engineering, Pukyong National University) ;
  • Na, Won-Bae (Department Ocean Engineering, Pukyong National University)
  • 투고 : 2014.04.13
  • 심사 : 2015.01.11
  • 발행 : 2015.02.25
⟨ 이전 논문 다음 논문 ⟩

초록

Submersed rock-berm structures are frequently used for protection of underwater lifelines such as pipelines and power cables. During the service life, the rock-berm structure can experience several accidental loads such as anchor collision. The consequences can be severe with a certain level of frequency; hence, the structural responses should be carefully understood for implementing a proper structural health monitoring method. However, no study has been made to quantify the structural responses because it is hard to deal with the individual behavior of each rock. Therefore, this study presents a collision analysis of the submersed rock-berm structure using a finite element software package by facilitating the smoothed-particle hydrodynamics (SPH) method. The analysis results were compared with those obtained from the Lagrange method. Moreover, two types of anchors (stock anchor and stockless anchor), three collision points and two different drop velocities (terminal velocity of each anchor and 5 m/s) were selected to investigate the changes in the responses. Finally, the effect of these parameters (analysis method, anchor type, collision point and drop velocity) on the analysis results was studied. Accordingly, the effectiveness of the SPH method is verified, a safe rock-berm height (over 1 m) is proposed, and a gauge point (0.5 m above the seabed) is suggested for a structural health monitoring implementation.

키워드

과제정보

연구 과제번호 : 친환경 복합기능 해안항만 구조시스템 창의인재양성 사업팀

참고문헌

  1. Chen, S.G., Zhao, J., Makurati, A. and Madshus, C. (2000), "Discrete element modelling of an explosion test in granite", Proceedings of the GeoENG2000 International Conference on Geotechnical, Melbourne, November.
  2. Coffen-Smout, S. and Herbert, G.J. (2000), "Submarine cables: a challenge for ocean management", Marine Policy, 24, 441-448. https://doi.org/10.1016/S0308-597X(00)00027-0
  3. Corkum, A.G. and Martin, C.D. (2004), "Analysis of a rock slide stabilized with a toe-berm: a case study in British Columbia Canada", Int. J. Rock Mech. Min., 41(7), 1109-1121. https://doi.org/10.1016/j.ijrmms.2004.04.008
  4. Gingold, R.A. and Monaghan, J.J. (1977), "Smoothed particle hydrodynamics: theory and application to non-spherical stars", Monthly Notice of the Royal Astronomical Society, 181, 375-389. https://doi.org/10.1093/mnras/181.3.375
  5. Hao, Y. and Hao, H. (2013), "Numerical investigation of the dynamic compressive behaviour of rock materials at high strain rate", Rock Mech. Rock Eng., 46(2), 373-388. https://doi.org/10.1007/s00603-012-0268-4
  6. Hayhurst, C.J., Clegg, R.A., Livingstone, I.H. and Francis, N.J. (1996), "The application of SPH techniques in AUTODYN-2D to ballistic impact problems", Proceeding of the 16th International Symposium on Ballistics, San Francisco, September.
  7. Huynh, T.C., Lee, S.Y., Kim, J.T., Park, W.S. and Han, S.H. (2013), "Simplified planar model for damage estimation of interlocked caisson system", Smart Struct. Syst., 12(3-4), 441-463. https://doi.org/10.12989/sss.2013.12.3_4.441
  8. International Cable Protection Committee (2009), Damage to submarine cables caused by anchors, Loss Protection Bulletin.
  9. Jie, W. and Yao-Tian, F. (2012), "Study on safety monitoring system for submarine power cable on the basis of AIS and radar technology", Physics Procedia, 24, 961-965. https://doi.org/10.1016/j.phpro.2012.02.144
  10. Kalcon, G., Adam, G.P., Anaya-Lara, O. and Lo, K.L. (2013), "Analytical efficiency evaluation of two and three level VSC-HVDC transmission links", Int. J. Elec. Power, 44(1), 1-6. https://doi.org/10.1016/j.ijepes.2012.07.018
  11. Kim, J.K., Woo, J. and Na, W.B. (2008), "Finite element simulation of two-point elastic wave excitation method for damage detection in concrete structures", Russ. J. Nondestruct. T., 44(10), 719-726. https://doi.org/10.1134/S1061830908100094
  12. KS V 3311 (2012), Anchors, Korean Standard.
  13. Lee, S.Y., Nguyen, K.D., Huynh, T.C., Kim, J.T., Yi, J.H. and Han, S.H. (2012), "Vibration-based damage monitoring of harbor caisson structure with damaged foundation-structure interface", Smart Struct. Syst., 10(6), 517-546. https://doi.org/10.12989/sss.2012.10.6.517
  14. Li, H.N., Yi, T.H, Ren, L., Li, D.S. and Huo, L.S. (2014), "Reviews on innovations and applications in structural health monitoring for infrastructures", Struct. Monit. Maint., 1(1), 1-45. https://doi.org/10.12989/SMM.2014.1.1.001
  15. Libersky, L.D. and Petschek, A.G. (1991), "Smooth particle hydrodynamics with strength of materials", in Advances in the Free-Lagrange Method Including Contributions on Adaptive Gridding and the Smooth Particle Hydrodynamics Method, Lecture Notes in Physics, 248-257, Springer, Berlin, Germany.
  16. Lin, J., Naceur, H., Coutellier, D. and Laksimi, A. (2014), "Efficient meshless SPH method for the numerical modeling of thick shell structures undergoing large deformations", Int. J. Nonlinear Mech., 64, 1-13. https://doi.org/10.1016/j.ijnonlinmec.2014.03.001
  17. Liu, W.K., Jun, S., Li, S., Adee, J. and Belytschko, T. (1995), "Reproducing kernel particle methods for structural dynamics",International Journal of Numerical Methods in Engineering, 38(10), 1655-1679. https://doi.org/10.1002/nme.1620381005
  18. Lucy, L.B. (1977), "A numerical approach to the testing of the fission hypothesis", Astronomical J., 82, 1013-1024. https://doi.org/10.1086/112164
  19. Na, W.B. and Kundu, T. (2002), "Underwater pipeline inspection using guided waves", J. Pressure Vessel Technol. - T. ASME, 124(2), 196-200. https://doi.org/10.1115/1.1466456
  20. Na, W.B. and Yoon, H.S. (2007), "Parametric density concept for long-range pipeline health monitoring", Smart Struct. Syst., 3(3), 357-372. https://doi.org/10.12989/sss.2007.3.3.357
  21. Ren, P. and Zhou Z. (2012), "A state-of-the-art review on structural health monitoring of deepwater floating platform", Pacific Sci. Rev., 14(3), 253-263.
  22. Sasalone, M. (1997), "Impact-echo: the complete story", ACI Struct. J., 94, 777-786.
  23. Sasalone, M. and Carino, N.J. (1987), "Transient impact response of plates containing flaws", J. National Bureau of Standards, 92, 369-381. https://doi.org/10.6028/jres.092.038
  24. Seo, S. and Min, O. (2006), "Axisymmetric SPH method of elasto-plastic contact in the low velocity impact", Comput. Phys. Commun., 175, 583-603. https://doi.org/10.1016/j.cpc.2006.06.015
  25. Tanaka, T. and Kunii, K. (2000), "High performance HVDC polymer cable", Fujikura Technical Review, 29, 57-62.
  26. Torum, A., Moghim, M.N., Westeng, K., Hidayati, N. and Arntsen, O. (2012), "On berm breakwaters: Recession, crown wall wave forces, reliability", Costal Eng., 60, 299-318. https://doi.org/10.1016/j.coastaleng.2011.11.003
  27. Wagner, E. (1995), "Submarine cables and protections provided by the law of the sea", Marine Policy, 19, 127-136. https://doi.org/10.1016/0308-597X(94)00002-A
  28. Woo, J. and Na, W.B. (2014), "Drag coefficients of stock and stockless anchors", Marine Technol. Soc. J., 48(3), 138-145. https://doi.org/10.4031/MTSJ.48.3.12
  29. Woo, J., Na, W.B. and Kim, H.T. (2009), "Numerical simulation of arch-type submarine cable protector under anchor collision", J. Ocean Eng. Technol., 23, 96-103.
  30. Woo, J., Na, W.B. and Yu, J.S. (2013), "Analysis of the falling velocity of underwater anchor using computational fluid dynamics", Proceedings of the Korean Association of Ocean Science and Technology Joint Workshop, JeJu, May.
  31. Yang, Y., Annamdas, V.G.M., Wang, C. and Zhou, Y. (2008), "Application of multiplexed FBG and PZT impedance sensors for structural health monitoring of rocks", Sensors, 8, 271-289. https://doi.org/10.3390/s8010271
  32. Yi, J.H., Kim, J.H., Jeong, W.M. and Chae, J.W. (2013a), "Field evaluation of optical-based three-dimensional dynamic motion measurement system with multiple targets for a floating structure", Ocean Eng., 62, 140-151. https://doi.org/10.1016/j.oceaneng.2012.12.046
  33. Yi, J.H., Park, J.S., Han, S.H. and Lee, K.S. (2013b), "Modal identification of a jacket-type offshore structure using dynamic tilt responses and investigation of tidal effects on modal properties", Eng. Struct., 49, 767-781. https://doi.org/10.1016/j.engstruct.2012.12.015
  34. Yoon, H.S. and Na, W.B. (2013a), "Anchor drop tests for a submarine power-cable protector", Marine Technol. Soc. J., 47(3), 72-79. https://doi.org/10.4031/MTSJ.47.3.6
  35. Yoon, H.S. and Na, W.B. (2013b), "Safety assessment of submarine power cable protectors by anchor dragging field tests", Ocean Eng., 65, 1-9. https://doi.org/10.1016/j.oceaneng.2013.03.004
  36. Zhang, X., Bai, J., Cao, G. and Chen, C. (2013), "Optimizing HVDC control parameters in multi-infeed HVDC system based on electromagnetic transient analysis", Int. J. Elec. Power, 49, 449-454. https://doi.org/10.1016/j.ijepes.2013.02.005
  37. Zhu, X.H. and Jia, Y.J. (2014), "3D mechanical modeling of soil orthogonal cutting under a single reamer cutter based on Drucker-Prager criterion", Tunneling and Underground Space Technology, 41, 255-262. https://doi.org/10.1016/j.tust.2013.12.008
  38. Zhu, Z., Mohanty, B. and Xie, H. (2007), "Numerical investigation of blasting-induced crack initiation and propagation in rocks", Int. J. Rock Mech. Min., 44(3), 412-424. https://doi.org/10.1016/j.ijrmms.2006.09.002

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