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Prediction of Local Seismic Damage in Jacket-type Offshore Platforms | ||
| AUT Journal of Civil Engineering | ||
| مقاله 12، دوره 2، شماره 2، اسفند 2018، صفحه 241-250 اصل مقاله (1.07 M) | ||
| نوع مقاله: Research Article | ||
| شناسه دیجیتال (DOI): 10.22060/ajce.2018.14738.5495 | ||
| نویسندگان | ||
| Mohammad. Aghajani Delavar؛ K. Bargi* | ||
| School of Civil Engineering, College of Engineering, University of Tehran, Tehran, Iran | ||
| چکیده | ||
| Due to the severe environmental condition, steel jacket type offshore platforms are highly vulnerable to damage; so, ensuring its proper performance and detection of probable damage is very important and undeniable. The assessment of existing offshore platforms is relatively a new process and has not yet been standardized as the design has. To do so, seismic assessment of the existing 4-legged steel jacket type offshore platform placed in the Persian Gulf (SPD12) is presented in this paper. Based on an actual platform structure and its mechanical model, the parameters which may affect the rate of shock absorption are analyzed, such as the condition of the site where the platform is located. Assessment is done by finding the seismic damage spread in the structure. Therefore, by using some documents such as FEMA-356 and ATC-40 developed for seismic assessment of buildings, seismic damage of the jacket-type platform is predicted with pushover analysis, and damage spread in this structure is predicted. This method could be very simple and detect damage spread precisely. As a result, knowing the weaker points of the structure which will be the first and third levels of the platforms similar to SPD12 in structural system can help to detect the damaged places, and by improving the capacity of the structure locally, the structural damage spread will be delayed. | ||
| کلیدواژه‌ها | ||
| Platform؛ Seismic Assessment؛ Offshore؛ Jacket؛ Damage Detection | ||
| مراجع | ||
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[1] S. Malekpour, P. Seyyedi, F. Dashti, J.F. Asghari, Seismic performance evaluation of steel moment-resisting frames using Iranian, European and Japanese seismic codes, Procedia Engineering, 14 (2011) 3331-3337. [2] P. Sultana, M.A. Youssef, Prediction of local seismic damage in steel moment resisting frames, Journal of Constructional Steel Research, 122 (2016) 122-137. [3] D.P. McCrum, A. Staino, Seismic damage detection for a steel braced frame structure, Proceedings of the Institution of Civil Engineers–Structures and Buildings, 168(9) (2015) 636-648. [4] S. Gholizadeh, H. Poorhoseini, Performance-Based Optimum Seismic Design of Steel Dual Braced Frames by Bat Algorithm, in: Metaheuristics and Optimization in Civil Engineering, Springer, 2016, pp. 95-114. [5] W. Krieger, H. Banon, J. Lloyd, R. De, K. Digre, D. Nair, J. Irick, S. Guynes, Process for assessment of existing platforms to determine their fitness for purpose, in: Offshore Technology Conference, Offshore Technology Conference, 1994. [6] A. Golafshani, M. Tabeshpour, Y. Komachi, Assessment and retrofit of existing jacket platform using friction damper devices, in: 8th International Conference of Ocean Industries. Bushehr University, Bushehr, Iran (in Persian), 2006. [7] A.A. Golafshani, M.R. Tabeshpour, Y. Komachi, FEMA approaches in seismic assessment of jacket platforms (case study: Ressalat jacket of Persian gulf), Journal of Constructional Steel Research, 65(10-11) (2009) 1979-1986. [8] J.-T. Kim, N. Stubbs, Damage detection in offshore jacket structures from limited modal information, International Journal of Offshore and Polar Engineering, 5(01) (1995). [9] H. Yang, H. Li, S.-L. Hu, Damage localization for offshore structures by modal strain energy decomposition method, in: American Control Conference, 2004. Proceedings of the 2004, IEEE, 2004, pp. 4207-4212. [10] X. Shi, T. Matsui, H.J. Li, C. Gong, A damage detection algorithm based on partial measurement for offshore jacket platforms, in: The Seventeenth International Offshore and Polar Engineering Conference, International Society of Offshore and Polar Engineers, 2007. [11] A.A. Elshafey, M.R. Haddara, H. Marzouk, Damage detection in offshore structures using neural networks, Marine Structures, 23(1) (2010) 131-145. [12] B. Asgarian, M. Amiri, A. Ghafooripour, Damage detection in jacket type offshore platforms using modal strain energy, Structural Engineering and Mechanics, 33(3) (2009) 325-337. [13] B. Asgarian, V. Aghaeidoost, H.R. Shokrgozar, Damage detection of jacket type offshore platforms using rate of signal energy using wavelet packet transform, Marine Structures, 45 (2016) 1-21. [14] Structural report of wellhead platform SPD12, SP12-24-D-23-5-001/D3, South Pars Gas Field Development Phase 12, 2010. [15] CSI, Sap2000: V11. 0 Integrated Software for Structural Analysis and Design, (2004). [16] API, Recommended practice for planning, designing, and constructing fixed offshore platforms, in, American Petroleum Institute, 1989. [17] M.A. Lotfollahi-Yaghin, H. Ahmadi, H. Tafakhor, Seismic responses of an offshore jacket-type platform incorporated with tuned liquid dampers, Advances in Structural Engineering, 19(2) (2016) 227-238. [18] Y. Toyama, Drift-wood collision load on bow structure of high-speed vessels, Marine Structures, 22(1) (2009) 24-41. [19] FEMA, Commentary for the seismic rehabilitation of buildings, in: FEMA-356, Federal Emergency Management Agency, Washington, DC, 2000. [20] C.D. Comartin, R.W. Niewiarowski, C. Rojahn, Seismic evaluation and retrofit of concrete buildings, Seismic Safety Commission, State of California, 1996. [21] S. 360, Iranian code of instructions on seismic reconstruction of existing buildings, in, Building and Housing Research Center, Tehran, Iran, 2012. [22] AISC, AISC 360–16.(2016), in: Specification for structural steel buildings. [23] FEMA, 440, Improvement of nonlinear static seismic analysis procedures, in: FEMA-440, Redwood City, 2005. | ||
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