Rehabilitation of jacket offshore platforms
Publish place: 6th International Offshore Industries Conference
Publish Year: 1394
Type: Conference paper
Language: English
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Document National Code:
OICIRAN06_027
Index date: 30 July 2016
Rehabilitation of jacket offshore platforms abstract
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.
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Rehabilitation of jacket offshore platforms authors
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