Page 141 - 《水资源与水工程学报》2024年第5期
P. 141
!35 "!5 # & ' ( ) & * + , - Vol.35No.5
2024 $ 10 % JournalofWaterResources&WaterEngineering Oct.,2024
DOI:10.11705/j.issn.1672-643X.2024.05.17
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MNFOP:TV642;TV312 QRSTU:A QVWP:1672643X(2024)05013711
Seismicperformanceoptimizationofsandretaininggravitydam basedon
improvedmultiobjectivecuckoosearchalgorithm
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YUJiaao ,SHENZhenzhong ,LILechen,SUNYiqing ,SHUYongkang ,YUShifa
(1.CollegeofWaterConservancyandHydropowerEngineering,HohaiUniversity,Nanjing210024,China;2.KeyLaboratoryof
TransportIndustryofComprehensiveTransportationTheory (NanjingModernMultimodalTransportationLaboratory),Ministryof
Transport ,Nanjing211100,China;3.StateKeyLaboratoryofHydrology-WaterResourcesandHydraulicEngineering,
HohaiUniversity,Nanjing210024,China;4.SchoolofTransportation,SoutheastUniversity,Nanjing211189,China;
5.QingdaoRuntianfengConstructionandDevelopmentCo.,Ltd.,Qingdao266109,China)
Abstract:Concretegravitydamsarepronetostructuralsafetyissuesunderstrongearthquakes,therefore
reasonableandeconomicengineeringmeasuresareneededfortheprotection.Asandretaininggravity
daminnorthwestChinawastakenastheresearchobject ,anditsnaturalvibrationcharacteristicsanddy
namicresponsewereanalyzedbasedonthemodesuperpositionresponsespectrum method.Takingthe
tensilestressonthedamheelandthevariablecostofseismicmeasuresintoaccount ,thisstudyemployed
theimprovedmultiobjectivecuckoosearch(MOCS)algorithm fortheoptimizationofantiseismicde
sign.Inordertoimprovetheperformanceofthealgorithm ,improvementsweremadebyadjustingthe
crowdingdistancecalculationformula ,introducingpolynomialmutationoperators,dynamicstepsizeand
discoveryprobability.Throughcomparativeexperimentswithothermultiobjectivealgorithmsondifferent
testfunctions,ithasbeenproventhattheimprovedMOCSalgorithmhastheadvantagesofhighcomputa
tionalefficiencyanduniformsetresolution.Finally,basedontheParetooptimalsolutionset,theration
alityofthedesignschemeforgravitydamswasevaluated ,andcorrespondingengineeringsuggestionswere
proposed.Thisstudycanprovidesomevaluableinsightsforthestructuraldesignofconcretegravitydams
inhighintensityearthquakeareas.
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