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Fixed jacket platform H2 Vibration Control Technology

micprotection. Jour-nalofEngineeringMechanics · ASCE, 1994; 120 (3) :135-1597SuhardjoJ. KareemA. Structuralcontrolofoffshoreplatform. In: Proc. Of7thIS0PE, Honolulu (USA), 1997; l4 :16-428MorisonJR. WaveForceExertedbySurfaceWaveonPiles. Petrol, Trans. ,[link widoczny dla zalogowanych], AIME, 19509LiHuajun. Sau-LonJamesHu,[link widoczny dla zalogowanych], TomotsukaTakayama. Theoptimaldesignofforoffshorestructures. Chi-naOceanEngineering, 1999:13 (2) :133-144StudiesonH2VibrationControlStrategyforOffshoreJacketPlatformsJiChunyan (Schoo1ofNaya1ArchitectureandOceanEngineering,[link widoczny dla zalogowanych], JiangsuUniversityofScienceandTechnology. Zhenjiang. 212003, China) Abstract: BaseonH2controltheory, avibrationcontrolstrategyforjacketplatformsisstudiedinthispaper, whichiseffec. tiveeveninthecaseofaccuratenumericalmodelofplatformbeingnotavailable. Byadoptingananalogfiltertoapproximatelyrepresentthewaveforcespectrum, thispaperdealswithno-Gaussin-whitenoiseinputproblem · whenHzcontrolstrategyisappliedtocontrolthevibrationofoffshoreplatform. Inaddition. inordertodescribemoreclearlythemodeluncertaintyofoffshoreDlatform,[link widoczny dla zalogowanych], noisetermsforgeneratingfilteredwaveloadandaccountingformodeluncertaintyareseparatedinthepre. sentstudv. Anumerica1exampleappliedtoatypicaljacketplatformispresentedtoinvestigatethecontroleffectandstudysensitivitvofsvstemuncertainties. TheresulsdemonstratethatH2controlmethodisveryeffectiveforcontrollingthevibra. tionofoffshoreiacketplatform, andalsorobust. Keywords: vibrationcontrol; H2controlstrategy; offshoreplatform; waveload of : Ji Chun-yan . Female, lecturer. February 1976 students. Tel : (0511) 2140076; E-mail: sophiajiji @ yahoo · com · cn

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