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1、第16卷第3期船舶力學(xué)Vol·16No·32012年3月一—JournalofShilriMechanics—Mar．2012一————————————————————————————————————————————————————————————————————一一ArticleID：1007—7294(2012)03—0226-10ParametricInfluenceAnalysesforUmbilicalInstallationinDeepwaterWANGAi-jun，YANGHe-zhen(StateKeyLab。rat。ry。f
2、OceanEngineering，School。fNavalArchitecture，OceanandCiVilEngineering，ShanghaiJiaoTongUniversity，Shanghai200240，China)Abstract：Thedeepwaterinstallationbecomesacriticalissueforumbilical．Theeffectsofdifferentbuovancvmoduledeplovmerits(differentsizes，lengthanddeploymentpositiono
3、fbuoyancymodule)onumbilicalinstallationarediscussedindetail．Andtheeffectsofwaveandcurrentdirectionsarealsostudied．First，afreehangingcatenaryumbilicalmodelisconstructedOnthebasisofthecatenaryeauation．Thenthedynamicumbilicalinstallationmodelisbuiltupbyapplyingbuoyancyandother
4、loads．Accordingtothecomparisonandanalysis，itisfoundthatthebuoyancymoduledeploymentpro’cesshasgreatefkctonumbilicalandSOdothewaveandcurrentdirections．Giventhesafetyofstruc‘tures，aIItheseparametersshouldbepaidattentiontoduringumbilicalinstallationindeepwater·Keywords：umbilica
5、l；deepwaterinstallation；buoyancymodulesCI。Cnumber：P751Documentcode：A1IntroductionTheumbilicalisacriticalcomponentoffloatingproductionsystems．Itprovideschemicalinjection。electricalpower，hydraulicsupplyandsignalstothesubseacomponentsforthecon—trolofsubseaoperations．Dynamicumb
6、ilicalthatconnectingsubseawellstofloatingprocessia—cilitiesisacritiealiteminsubseaproductionsystems．Itwillbesubjecttohighexternalhydro—staticDressureandenvironmentalloadsduringtheinstallationprocess．Astheoffshoreexplo’rationandproductionisincreasinglymovingintodeeperwaterre
7、gion，withaccompanyingin-creaseininstallationloads，theumbilicalinstallationfacesmorechallenges．Increasedweightofumbilicalwouldcauseextremelyhightoptension．Waveandcurrentinducedmotionsareli—abletointroducehighstressintheumbilical，particularlyatthetouchdownzoneandhang—offposit
8、ion．Highstressinthetouch—downregioncanbereducedbyinstallingtheumbilicalwithbuovanc
