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Journal of Zhejiang University SCIENCE A 2011 Vol.12 No.9 P.680-691

http://doi.org/10.1631/jzus.A1000381


Retrofit of Ressalat jacket platform (Persian Gulf) using friction damper device


Author(s):  Y. Komachi, M. R. Tabeshpour, A. A. Golafshani, I. Mualla

Affiliation(s):  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

Corresponding email(s):   tabesh_mreza@yahoo.com

Key Words:  Jacket offshore platform, Seismic retrofit, Friction damper devices (FDDs)


Y. Komachi, M. R. Tabeshpour, A. A. Golafshani, I. Mualla. Retrofit of Ressalat jacket platform (Persian Gulf) using friction damper device[J]. Journal of Zhejiang University Science A, 2011, 12(9): 680-691.

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author="Y. Komachi, M. R. Tabeshpour, A. A. Golafshani, I. Mualla",
journal="Journal of Zhejiang University Science A",
volume="12",
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pages="680-691",
year="2011",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A1000381"
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%T Retrofit of Ressalat jacket platform (Persian Gulf) using friction damper device
%A Y. Komachi
%A M. R. Tabeshpour
%A A. A. Golafshani
%A I. Mualla
%J Journal of Zhejiang University SCIENCE A
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%@ 1673-565X
%D 2011
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A1000381

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T1 - Retrofit of Ressalat jacket platform (Persian Gulf) using friction damper device
A1 - Y. Komachi
A1 - M. R. Tabeshpour
A1 - A. A. Golafshani
A1 - I. Mualla
J0 - Journal of Zhejiang University Science A
VL - 12
IS - 9
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EP - 691
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Y1 - 2011
PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.A1000381


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.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

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