Page 182 - 《水资源与水工程学报》2022年第4期
P. 182
!33 " ! 4 # & ' ( ) & * + , - Vol.33No.4
2022 $ 8 % JournalofWaterResources&WaterEngineering Aug.,2022
DOI:10.11705/j.issn.1672-643X.2022.04.24
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FGHIJ:TV223.2 1;TV741 KLMNO:A KPQJ:1672643X(2022)04017807
InfluenceofvalleydeformationonthestressstateofBaihetan
plungepoolwithaninvertedarchslab
2
1
1
LIQi,XUJianrong,ZHAOLanhao
(1.CollegeofWaterConservancyandHydropowerEngineering,HohaiUniversity,Nanjing210098,China;
2.PowerChinaHuadongEngineeringCorporationLimited,Hangzhou311122,China)
Abstract:Atpresent,somehigharchdamprojectsinthedomesticandoverseashavealreadyexperiencedthe
phenomenonofvalleydeformationafterimpoundment ,whichnotonlyaffectsthechangeofarchdamproper
ties,butalsohasbeenproventoaffectthenormaloperationofthedownstreamenergydissipationbuildings.In
ordertoanalyzetheeffectofvalleydeformationontheoperationofenergydissipationbuildingsinBaihetan
HydropowerStation ,weadoptedtheboundarydisplacementmethodforthefiniteelementanalysis,simulated
thestressstateoftheplungepoolwithaninvertedarchslabundermaintenancecondition(nowater)andnor
maloperationconditionwithdifferentvalleydeformationamplitudes ,andanalyzedtheeffectofdifferentar
rangementsofelasticjointsonthestressstateoftheplungepoolundertheeffectofvalleydeformation.There
sultsshowthatwiththeincreaseofvalleydeformation,thestressofthepoolalsoincreases;whenthevalley
deformationofthetopofthepoolislessthanorequalto50mm,thesafetyoftheplungepoolwithaseamless
structureisincontrol ,andtheimpoundmentcanfurtherreducetheinfluenceofvalleydeformationonthead
versestressofthepoolstructure,whereasthesettingofelasticjointsmayincreaseitsadversestress.
Keywords:valleydeformation;invertedarchplungepool;stressstate;elasticjoint;BaihetanHydropower
Station
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