Page 163 - 《水资源与水工程学报》2023年第4期
P. 163
!34 " ! 4 # & ' ( ) & * + , - Vol.34No.4
2023 $ 8% JournalofWaterResources&WaterEngineering Aug.,2023
DOI:10.11705/j.issn.1672-643X.2023.04.19
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MNOPQ:TV663 7RSTU:A 7VWQ:1672643X(2023)04015908
Staticanddynamicanalysisofecologicalbottom axisdriven
flapgateinlakeandriver
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CHENWei,WANGChen,LIJinyu,YANGGuihai,WANGZhengzhong
(1.ChinaRailwayWaterConservancy&HydropowerPlanningandDesignGroupCo.,Ltd.,Nanchang330029,China;
2.CollegeofWaterResourcesandArchitecturalEngineering,NorthwestA&FUniversity,Yangling712100,China)
Abstract:Thebottomaxisdrivenflapgate,asanoveltypeofriverlandscapegate,iswidelyusedinriv
erconservancyprojectsduetotheecologicalbenefitsitbringsforth.However,itisonlyputintoservice
forashorttime ,thestructuraldesigntheoryisnotyetfullydeveloped,andtherearefewreferenceson
thefiniteelementcalculationresearchofthegate.Inviewofthis ,thenumericalsimulationmethodsof
thebottomaxisdrivenflapgatewassummarizedfocusingonitsstaticanddynamiccharacteristics.Taking
aprojectasanexample ,thestaticanddynamiccharacteristicsofthebottomaxisdrivenflapgatestruc
tureundertheactionofwaterpressurewasinvestigatedusingthenumericalcalculationmethodofCFD-
CSDcoupling.Firstly ,thewaterpressureofthegateunderdifferentopeningconditionswasnumerically
simulated ,thenthewaterloadcalculatedbyunidirectionalfluid-solidcouplingmethodwasappliedto
thegatestructure ,basedonwhichthechangingtrendofthestressanddisplacementofeachcomponentof
thegatewiththechangesofopeningdegreeswasanalyzed.Meanwhile ,thedryandwetmodesofthegate
structurewereanalyzedtostudytheinfluenceofwaterinfrontofthegateonthenaturalvibrationmode
andfrequencyofthegate.Theanalysisresultsshowthatthestressanddeformationofeachcomponent
reachedthemaximumvalueinthefullclosurecondition ,themaximumstressreached200.79MPa,and
themaximumdisplacementvaluewas47.703mm ,whichgraduallydecreasedwiththeincreaseofthe
gateopeningdegree.Inaddition ,thenaturalvibrationcharacteristicsofthegatewassignificantlyaffected
bythewaterinfrontofthegate.Therefore,thefluid-solidcouplingeffectshouldbeconsideredwhen
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