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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2011, Vol. 12 Issue (9): 680-691    DOI: 10.1631/jzus.A1000381
Mechanical and Civil Engineering     
Retrofit of Ressalat jacket platform (Persian Gulf) using friction damper device
Y. Komachi, M. R. Tabeshpour, A. A. Golafshani, I. Mualla
Department of Civil Engineering, Pardis Branch, Islamic Azad University, Pardis, Iran, Faculty of Engineering, Sabzevar Tarbiat Moallem University, Sabzevar, Iran, Department of Civil Engineering, Sharif University of Technology, Tehran, Iran, DAMPTECH Ltd., Denmark Technical University, Lyngby, Denmark
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Abstract  A friction damper device (FDD) is used for vibration control of an existing steel jacket platform under seismic excitation. First, the damping is presented for vibration mitigation of structures located in seismically active zones. A new method for quick design of friction or yielding damping devices is presented. The effectiveness of the damping system employing such FDDs in a jacket platform is evaluated numerically. The influence of key parameters of the damping system on the vibration suppression of the offshore structure is studied in detail. To examine the vibration control effectiveness of the FDD for the jacket platform, performance of the controlled structure under the seismic forces is studied using numerical simulations. A parametric study is undertaken to discover the optimized slip load and brace area of the FDD. It is shown that the FDD is effective in mitigating the dynamic responses of the offshore platform structure.

Key words： Jacket offshore platform      Seismic retrofit      Friction damper devices (FDDs)     
Received: 25 August 2010      Published: 06 June 2011
CLC:  TE9  
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Y. Komachi
A. A. Golafshani
M. R. Tabeshpour
I. Mualla
Cite this article:

Y. Komachi, M. R. Tabeshpour, A. A. Golafshani, I. Mualla. Retrofit of Ressalat jacket platform (Persian Gulf) using friction damper device. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2011, 12(9): 680-691.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.A1000381     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2011/V12/I9/680

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[2] JIN Yi-zhong, ZHANG Yue-feng, LI Wei. Experimental study on micro-electrolysis technology for pharmaceutical wastewater treatment[J]. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2002, 3(4): 401-404.