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Researchonimpactloadcharacteristicsofhigharchdams
subjectedtounderwaterexplosions
1,2
1,2
1,2
1,2
1,2
HUANGYufeng ,LUWenbo ,WANGGaohui ,WANGYang ,LIUJie
(1.StateKeyLaboratoryofWaterResourcesEngineeringandManagement,WuhanUniversity,Wuhan 430072,China;
2.KeyLaboratoryofRockMechanicsinHydraulicStructuralEngineeringofMinistryofEducation,
WuhanUniversity,Wuhan 430072,China)
Abstract:Determinationofblastloadsistheprerequisitefortheblastperformanceassessmentandblast - resistant
designofhigharchdams.Forthispurpose,modeltestsofhigharchdamssubjectedtounderwaterexplosionswere
carriedouttostudythecharacteristicsofunderwaterexplosionimpactloadscombinedwithnumericalsimulation
methods.Aprototypearchdamwasdesignedandmodelledatascaleof1∶200,andtheimpactloadsinthereser
voirandonthesurfaceofthearchdamsubjectedtotheunderwaterexplosionweremeasured.Abaqussoftwarewas
usedfornumericalsimulation,whichwasvalidatedbycomparingwiththetestdata.Theresultsindicatethattheun
derwaterexplosionimpactloadofhigharchdamscanbedividedintothreeparts:theprimaryimpactload,thebank
slopereflectionimpactload ,andthebasereflectionimpactload;Undertheconditionofdetonationinthemiddleof
thereservoir ,thecentralareaofthehigharchdamisgreatlyaffectedbytheprimarywaveimpact,whileareasnear
thebankslopeandthebasearegreatlyaffectedbythereflectedwave.Intheantiexplosiondesignandperformance
evaluationofhigharchdams ,thereflectedimpactloadshouldbeconsidered.Theresearchresultscanproviderefer
encefortheanti - explosiondesignandperformanceevaluationofhigharchdams.
Keywords:higharchdams;underwaterexplosion;impactloadondamsurface;reflectedwave;modeltest
(责任编辑:韩 昆)
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