Rehabilitation of jacket offshore platforms
محل انتشار: ششمین همایش بین المللی صنایع فراساحل
سال انتشار: 1394
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 613
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شناسه ملی سند علمی:
OICIRAN06_027
تاریخ نمایه سازی: 9 مرداد 1395
چکیده مقاله:
Some existing platforms may have some aspects of deficiency in both seismic and fatigue issues. From economic point of view it is preferable to retrofit and continue using of existing jackets in many cases, in comparison to a new installation. In this paper a relatively complete review has been carried out on various methods of rehabilitation. As an example an existing 4-leg service platform placed in the Persian gulf (Ressalat) is considered and the results are presented. Some efficient rehabilitation methods such as Friction Damper Device (FDD) and Buckling Restrained Braces (BRB) are presented and investigated for seismic loads and near-field effects as well. In this paper far and near field earthquakes are considered as possible excitations and the effects of FDD and BRB on the structural behavior are investigated numerically. The results show the high efficiency of both two methods in reduction structural responses and increasing seismic performance level.
کلیدواژه ها:
نویسندگان
Y Komachi
Department of Civil Engineering, Pardis Branch, Islamic Azad University, Pardis, Iran
M. R Tabeshpour
Department of Mechanical Engineering, Sharif University of Technology, Tehran, Iran