Earthquakes and Structures

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Optimization sensor placement of marine platforms using modified ECOMAC approach

  • Received : 2021.03.15
  • Accepted : 2021.10.25
  • Published : 2021.12.25
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Abstract

The modified-ECOMAC approach to monitor and investigate health of structure in marine platforms was evaluated in this research. The material properties of structure were defined based on the real platform located in Persian Gulf. The nonlinear time-history analyses were undertaken using the marine natural waves. The modified-ECOMAC approach was designed to act as the solution of the best sensor placement according to structural dynamic behavior of structure. This novel method uses nonlinear time-history analysis results as an exact seismic response despite the common COMAC algorithms utilize the eigenvalue responses. The processes of modified-ECOMAC criteria were designed and developed by author of this paper as a toolbox of Matlab. The Results show that utilizing an efficient ECOMAC method in SHM process leads to detecting the critical weak points of sensitive marine platforms to make better decision about them. The statistical results indicate that considering modified ECOMAC based on seismic waves analysis has an acceptable accuracy on identify the sensor location. The average of statistical comparison of COMAC and ECOMAC via modal and integrated analysis, had a high MAE of 0.052 and RSME of 0.057 and small R2 of 0.504, so there is significant difference between them.

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References

  1. Abdel Raheem, S.E., Abdel Aal, E.M., Abdelshafy A.G.A, Fahmyd, M.F.M. and Mansoure, M.H. (2020), "Pile-soil-structure interaction effect on structural response of piled jacketsupported offshore platform through in-place analysis", Earthq. Struct., 18(4), 407-421. https://doi.org/10.12989/eas.2020.18.4.407.
  2. Anderson de Souza, M.G. (2005), "Damage identification using frequency response function", 18th International Congress of Mechanical Engineering.
  3. Asgarian, B., Aghaeidoost, V. and Shokrgozar, H.R. (2016), "Damage detection of jacket type offshore platforms using rate of signal energy using wavelet packet transform", J. Marine Struct., 45, 1-21. https://doi.org/10.1016/j.marstruc.2015.10.003.
  4. Asgarian, B., Fiouz, A., Shakeri Talarposhti, A. and Shokrgozar, H.R. (2007), "Nonlinear dynamic behavior of float over deck installed platforms using incremental dynamic analysis", Offsh. Eng. J., 10(5), 89-95.
  5. Bakhtiari-Nejad, F. and Rahai Esfandiari, A. (2005), "A structural damage detection method using static noisy data", Eng. Struct., 27(12), 1784-1793. https://doi.org/10.1016/j.engstruct.2005.04.019.
  6. Cawley, P. and Adams, R.D. (1979), "The locations of defects in structures from measurements of natural frequencies", J. Strain Anal., 14(2), 49-57. https://doi.org/10.1243/03093247V142049.
  7. Coppolino, R.N. and Rubin, S. (1980), "Detectability of structural failures in offshore platforms by ambient vibration monitoring", 12th Offshore Technology Conference, Houston, Texas, May.
  8. Elshafey, A., Haddara, M.R. and Marzouk, H. (2010), "Damage detection in offshore structures using neural networks", J. Marine Struct., 23(1), 131-145. https://doi.org/10.1016/j.marstruc.2010.01.005.
  9. Enrique, J., Perez, R., Rodriguez, R. and Vazquez-Hernandez, A.O. (2017), "Damage detection in offshore jacket platforms with limited modal information using the damage submatrices method", J. Marine Struct., 55, 78-103. https://doi.org/10.1016/j.marstruc.2017.05.004.
  10. Firoozbakht, M., Vosoughifar, H. and Ghari Ghoran, A. (2019), "Coverage intensity of optimal sensors for common, isolated, and integrated steel structures using novel approach of FEMMAC-TTFD", Int. J. Distrib. Sens. Network., 15(8), 1550147719857568. https://doi.org/10.1177/1550147719857568.
  11. Goel, R.K. (2010), "Approximate seismic displacement capacity of piles in marine oil terminals", Earthq. Struct., 1(1), 129-146. https://doi.org/10.12989/eas.2010.1.1.129.
  12. Guijie, L., Zhai, Y., Leng, D., Tian, X. and Mu, W. (2017), "Research on structural damage detection of offshore platforms based on grouping modal strain energy", J. Ocean Eng., 140, 43-49. https://doi.org/10.1016/j.oceaneng.2017.05.021.
  13. Haeri, M.H., Lotfi, A., Dolatshahi, K.M. and Golafshani, A.A. (2016), "Inverse vibration technique for structural health monitoring of offshore jacket platforms", Appl. Ocean Res., 62, 191-198. https://doi.org/10.1016/j.apor.2016.11.010.
  14. Hillis, A.J. and Courtney, C.R.P. (2011), "Structural health monitoring of fixed offshore structures using the bicoherence function of ambient vibration measurements", J. Sound Vib., 330(6), 1141-1152. https://doi.org/10.1016/j.jsv.2010.09.019.
  15. Hosseinlou, F. and Mojtahedi, A. (2016), "Developing a robust simplified method for structural integrity monitoring of offshore jacket-type platform using recorded dynamic responses", Appl. Ocean Res., 56, 107-118. https://doi.org/10.1016/j.apor.2016.01.010.
  16. Hosseinlou, F., Mojtahedi, A. and Lotfollahi, M.A. (2017), "Finite element model updating of an offshore jacket platforms using experimental modal analysis", Comput. Meth. Eng., 36(1), 67-84. https://doi.org/10.18869/acadpub.jcme.36.1.67.
  17. Hunt, D.L. (1992), "Application of an enhanced coordinate modal assurance criteria (ECOMAC)", 10th International Modal Analysis Conference, 1, San Diego.
  18. Khoshnoudian, F. and Esfandiari, A. (2011), "Structural damage diagnosis using modal data", Scientia Iranica, 18(4), 583-560. https://doi.org/10.1016/j.scient.2011.07.012.
  19. Lalu, M., Idichandy, V.G. and Ganapathy, C. (2001), "Structural monitoring of offshore platforms using impulse and relaxation response", Ocean Eng. J., 6(1), 689-705. https://doi.org/10.1016/S0029-8018(00)00018-4.
  20. Lam, H. and Yang, J. (2015), "Bayesian structural damage detection of steel towers using measured modal parameters", Earthq. Struct., 8(4), 935-956. https://doi.org/10.12989/eas.2015.8.4.935.
  21. Li, H.N., He, X.Y. and Yi, T.H. (2007), "Multi-component seismic response analysis of offshore platform by wavelet energy principle", J. Coast. Eng., 56(8), 810-830. https://doi.org/10.1016/j.coastaleng.2009.02.008.
  22. Luengo, M.M., Kolios, A. and Lin,W. (2016), "Structural health monitoring of offshore wind turbines: A review through the Statistical Pattern Recognition Paradigm", Renew. Sustain. Energy Rev., 64, 91-105. https://doi.org/10.1016/j.rser.2016.05.085.
  23. Mojtahedi, A., Lotfollahi, Yaghina, M.A., Hassanzadeha, Y., Ettefaghb, M.M., Aminfar, A. and Aghdamc, A.B. (2011), "Developing a robust SHM method for offshore jacket platform using model updating and fuzzy logic system", Appl. Ocean Res., 33, 398-411. https://doi.org/10.1016/j.apor.2011.05.001.
  24. Moradi, M., Vosoughifar, H. and Hassanzadeh, Y. (2014), "Optimal placement of smart sensors in the underground storage tanks regarding to the cavitation effect by Monte Carlo analysis", Proceedings of the 2nd International Congress on Structure, Tabriz Islamic Art University, Tabriz, Iran.
  25. Park, S.Y., Park, D.C., Kim, E.H. and Kim, H.S. (2011), "Damage evaluation on a jacket platform structure using modal properties", The Twenty-first International Offshore and Polar Engineering Conference, Maui, Hawaii, USA.
  26. Sadat Shokouhi, S.K. and Vosoughifar, H. (2013), "Optimal sensor placement in the lightweight steel framing structures using the novel TTFD approach subjected to near-fault earthquakes", Civil Struct. Hlth. Monit., 3(4), 257-267. https://doi.org/10.1007/s13349-013-0053-4.
  27. Sadat Shokouhi, S.K., Dolatshah, A., Vosoughfar, H. and Rahnavard, Y. (2013), "Optimal placement of viscous dampers in the water pipeline networks subjected to near-fault earthquakes using genetic algorithm", ASME 2013 Pressure Vessels and Piping Conference, 8, 1-12.
  28. Sadat Shokouhi, S.K., Dolatshah, A., Vosoughfar, H. and Rahnavard, Y. (2013), "Optimal sensor plcement in the Base-Isolated structures subjected to near-fault earthquakes using a novel TTFD approach", Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems, 8692, 86924N.
  29. Shahrivar, F. and Bouwkamp, J.G. (1986), "Damage detection in offshore platforms using vibration information", J. Energy Resour. Technol., 108(2), 97-106. https://doi.org/10.1115/1.3231263.
  30. Sirous, M., Sabbagh, S., Yazdi, A. and Javid, H. (2011), "Application of durability method in seismic analysis of fixed platform", International Conference on Ocean, Offshore and Arctic Engineering, Tehran, June.
  31. Vandiver, J.K. (1977), "Detection of Structural Failure on fixed platforms by measurement of dynamic response", J. Petrol. Technol., 29(3), 305-310. https://doi.org/10.2118/5679-PA.
  32. Viero Paula, F. and Ney, R. (1999), "Application of some damage identification methods in offshore platform", Marine Struct. J., 12(2), 107-126. https://doi.org/10.1016/S0951-8339(99)00007-6.
  33. Vijayanarayanan, A.R., Goswami, R. and Murty, C.V.R (2017), "Identifying stiffness irregularity in buildings using fundamental lateral mode shape", Earthq. Struct., 12(4), 437-448. https://doi.org/10.12989/eas.2017.12.4.437
  34. Vosoughifar, H. and Khorani, M. (2019), "Optimal sensor placement of RCC dam using modified approach of COMACTTFD", KSCE J. Civil Eng., 23, 2933-2947. https://doi.org/10.1007/s12205-019-0716-8.
  35. Vosoughifar, H., Sadat Shokouhi, S.K. and Farshadmanesh, P. (2012), "Optimal sensor placement of steel Structure with UBF system for SHM using hybrid FEM-GA technique", Civil Structural Health Monitoring Workshop (CSHM-4), Berlin, Germany.
  36. Vosoughifar, H., Sadat Shokouhi, S.K., Dolatshah, A., Rahnavard, Y. and Atapour, H. (2013), "Optimal placement of smart sensors in CFS structures under blast loading using hybrid FEM-GA approach", Sensor. Smart Struct. Technol. Civil Mech. Aerosp. Syst., 8692, 869242. https://doi.org/10.1117/12.2012174.
  37. Wang, S. (2017), "Damage detection in offshore platform structures from limited modal data", , Appl. Ocean Res., 41, 48-56. https://doi.org/10.1016/j.marstruc.2017.05.004 0951-8339.