海洋輸液立管的聯(lián)合設(shè)計(jì)標(biāo)準(zhǔn)與動(dòng)力特性研究.pdf

1、青島海洋大學(xué)碩士學(xué)位論文海洋輸液立管的聯(lián)合設(shè)計(jì)標(biāo)準(zhǔn)與動(dòng)力特性研究姓名：王樹青申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：港口海岸及近海工程指導(dǎo)教師：郭海燕劉德輔2000.6.1寧島河t人1’fljj!I論義AbstracIAbstractTakingthemarineriserconveyingflowingfluidasamodel，thelateraldifferentialmotionequationisdevelopedbyusingthefini

2、teelementmethodJointprobabilityisappliedtostudythedesigncriteriaofthemarineriserandcomparisonsaremadewithothermethodThentheeffectsoftheinternalflowingfluid，toptension，riserspanetcontheriserdynamicalcharacteristicsaredisc

3、ussedAJointprobabilitystochasticsimulationSamplinganalysisismadeonthedataof15stormsofBohaiSeatoobtaintwoseriesofwaveheightandcurrentvelocitydominatedbywaveandcurrentrespectivelyComputerprogramofweibulldistribution，gumbel

4、distributionandlog—normaldistributioniscompiledtodeterminethebestfittedlinetypeandthecorrespondingcharacteristicvalueThenhnportancesamplingproceduremethodisappliedtoperformstochasticsimulationtogetthecombinationofwaveand

5、currentunderacertainprobabilitylevelADerivationoflateralmotionequationofthemarineriserConsideringtheeffectofinternalflowingfluid，toptension，theenvironmentalloadsatthesametime，thelateraldifferentialmotionequationisdevelop

6、edbyfiniteelementmethodAStudyofthejointdesigncriteriaofthemarineriserAimingatthemarinerisersupportedonfixedplatforms，STATICFORisprogrammedtocomputethedeflectionandstressdistributionalongtheriserTakingthemaximumstressofth

7、eriserasthecontrolcondition，thejointdesigncriteriaaredeterminedandcomparisonismadewiththetraditionalmethodandresponseprobabilitymethodAStudyofthedynamicalcharacteristicsofmarineriserFreqforisprogrammedtostudytheeffectofi

8、nternalflowandtoptensiononthedynamiccharacteristicsoftheriserSomerelationshipsbetweenthenaturalfrequencyandinternalflowtoptension，supportsetcareobtainedKeyword：Marineriserconveyingflowingfluid，Oceanenvironmentalcondition