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

Komachi, Y ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1631/jzus.A1000381
  3. Abstract:
  4. 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
  5. Keywords:
  6. Jacket offshore platform ; Seismic forces ; Seismic retrofit ; Control effectiveness ; Controlled structures ; Damping device ; Damping system ; Friction damper ; Jacket platforms ; Key parameters ; Off shore platforms ; Offshore platform structure ; Parametric study ; Persian Gulf ; Seismic excitations ; Friction damper devices (FDDs) ; Seismic retrofits ; Seismically active zones ; Steel jacket platforms ; Vibration mitigation ; Vibration suppression ; Damping ; Drilling platforms ; Dynamic response ; Friction ; Offshore structures ; Retrofitting ; Seismology ; Vibration control ; Tribology
  7. Source: Journal of Zhejiang University: Science A ; Volume 12, Issue 9 , 2011 , Pages 680-691 ; 1673565X (ISSN)
  8. URL: http://link.springer.com/article/10.1631%2Fjzus.A1000381