基于CFD-FEA联合仿真的波浪荷载作用下离散浮箱式浮桥动力响应研究

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关键词：离散浮箱式浮桥；曲率半径；流固耦合；动力响应；协同仿真 中图分类号： U441+.3 文献标志码：A DOI：10.16385/j.cnki.issn.1004-4523.202401030

CFD-FEA co-simulation based study on dynamic response of discrete-pontoon floating bridges under wave actions

JIANG Dongqi'， SHAO Yuhang'，LIU Shanquan1，HU Cun² （1.School of Safety Science and Engineering，Nanjing University of Scienceand Technology，Nanjing 210094，China; 2.Research Institute of Tsinghua University in Shenzhen，Shenzhen518071，China）

Abstract：Tisstudyvestigatesthdyamicesposeofovelofsoretrasportationeginegsucture，thedisetepoofloatig bridge，under waveactions.Theinteractionbetweenthe waveand pontonissimulatedusingcomputationalfluiddynamics （CFD）method， whiletheupperstructureofthfloatigbridgeismodeledusingfiniteelementanalysis （FA）metod.Anumericalmodelisestablishedusing thecolaboratiesimulatioptfoofBAQUSandSta-Cestructalrspoeofsaleddseteptoonflatingbdgeodel underwaveactionsisanalyzedandcomparedwithexperimentalresults，whichvalidatetereliabilityofthemodelingandanalysis methodology.Atyicaldiscretepotoontrussfloatigidgeisselectedtocomparethiferecesetweetefiedodeladsipliid model，andthediferecesarefurtercomparedTheefectsofwaveperiods，mooingsystems，ndgeometricurvatureonthedyamic responseofthloatigdgearestuidTsultssotatepoos’ateramotioscanbtielyduedbdgteg systemandincreasingthemoringstfess，whichfurterlmitsthedisplacementoftefloatingbridgesuperstructureTepeaklateral displacementof thefloatingbridgestructureintallyincreasesandthndcreaseswiththewaveperiodTenaturalperiodofanoored floatingbridgeismuchlongertantatofmooedomaingitmoresuscptibletoeexcitedbylong-perdwaveactios.easingte curvatureradiusoftefloatingbdgeelstoeducetheoveralldyamicresponseTepeakvaluesofdynaicresposesincuedfloating bridgesunderlng-peiodicwaveactiosaresigniicantlyesstantoseinstraightbridges.Telteraldisplacementoftedoublecured floatingbridgealaatofleurdidgiletepeakvausoftealfrsocatsealialod theengineeringaplicationoffloatingbridges，itisiportanttoconsidertelocalwaveenvromentcoditionsandselectaoprate curvatureradiusaluesandmoingsstemstoeduetestructuralrespseMoreover，thstrengthceckanddetaileddsignforsuportsat ends should be considered with caution.

Keywords：discrete-pontoonfloatingbridges;radiusofcurvature;fluid-structureinteraction;dynamicresponse;cosimulation

中国是海洋大国，为推进海洋经济的高质量发展，中国陆续建设多座跨海大桥以满足海上交通需求，如杭州湾跨海大桥、港珠澳大桥和平潭海峡大桥等。（剩余18032字）