Page 169 - 《水资源与水工程学报》2023年第5期
P. 169
! 34 " ! 5 # & ' ( ) & * + , - Vol.34No.5
2023 $ 10 % JournalofWaterResources&WaterEngineering Oct.,2023
DOI:10.11705/j.issn.1672-643X.2023.05.19
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EFGHI:TV641.1 JK7LM:A JNOI:1672643X(2023)05016507
Seismicsafetyofahighasphaltconcretefacedrockfilldam
instrongearthquakearea
1
2
1
2
WANGHui,CENWeijun,WANGDongliang,TANGJie
(1.CollegeofWaterConservancyandHydropowerEngineering,HohaiUniversity,Nanjing210098,China;
2.PowerChinaHuadongEngineeringCorporationLimited,Hangzhou311122,China)
Abstract:Threedimensionalnonlinearfiniteelementmethodisusedtocalculatethestaticanddynamic
stressdeformationofthe161m highasphaltconcretefacedrockfilldam intheupperreservoirofa
pumpedstoragepowerstationinthestrongearthquakeareawithseismicintensityof Ⅷ.Theresultsshow
thatthedeformationdistributionofthedamisreasonableunderstaticconditions.Themaximumhorizontal
displacementandsettlementofthedambodyare62.64and151.85cm,respectively,andthemaximum
tensilestrainofthedamfaceis0.56% instorageperiodofthereservoir.Undertheeffectofthe Ⅷ de
greeseismicaction ,themaximumdynamicdisplacementofthedambodyinthevalleydirection,theaxi
aldirectionandtheverticaldirectionare22.88 ,21.90and13.76cm,themaximumdynamicaccelera
2
tionratesare12.31,12.26and12.14m/s,andthemaximumverticalpermanentdeformationafterthe
earthquakeis30.01cm,withtheearthquakesubsidencerateof0.19%.Thearcsectionandthejunc
tionofexcavationandfillingarethepeakareasofthetensilestrainoftheconcreteface ,andtheextreme
valueis0.85%.Insummary ,theoverallsafetyperformanceofthedamisgoodandtherewillbenoma
jorsafetyproblemsduringearthquakes.
Keywords:asphaltconcretefacedrockfilldam;strongearthquakearea;stressdeformation;dynamic
response ;pumpedstoragepowerstation
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