輕骨料混凝土襯砌渠道凍脹研究及數(shù)值模擬.pdf

1、分類號TV91UDC691學校代碼10129學號2013206054輕骨料混凝土襯砌渠道凍脹研究及數(shù)值模擬LightweightAggregateConcreteLiningCanalFrostHeaveResearchNumericalSimulation申請人：俞婷婷學位類別：工程碩士領域：水利工程指導教師：申向東教授論文提交日期：二○一五年六月LightweightAggregateConcreteLiningCanalFrost

2、HeaveResearchNumericalSimulationAbstractSomelowtemperatureareasinourcountryfmethodsusedintheantiseepageofcanalisusingcommonconcreteliningcanalbutthereareseriousoffrostdamageproblemssuchasupliftshiftdislocationdegeneratio

3、nspallingdamagesoon.Thisintangibleincreasethefeesofrepairmanagementcanaleveryyearsohowtodevelopnewantiseepageantifreezematerialthatimprovethecanalwaterutilizationcoefficientisveryimptant.Pumiceresourceisrichinourcountryi

4、tsacteristicisfragilemoderatehardnesswaterabsptionheatpreservationheatinsulationperfmanceisgoodhighintensityacidalkalicrosionresistancenopollutionnoradiationsoonontheotherhthepumiceischeapcanallininginlightweightaggregat

5、econcretecanreducethecostindertostudytheantifreezebehavioflightweightaggregateconcreteliningcanalsoastoputfwardmesuitableinhetaoirrigationcanalliningofnewmaterialsInthispaperthewkisasfollows:(1)Inhetaoirrigationareasetti

6、ngupthreedifferentschemesofditchesliningcanalsthroughalotoffieldobservationaboutgroundtemperatureinthewholeperiodofdifferentschemesthedatawereanalyzedcompareditisconcludedthatlightweightaggregateconcretecanalthandinaryco

7、ncretetemperatureincreasedby2.5℃thecanalofdinaryconcretefrostheaveslopethelargestamountofslopethesmallestcanalbottomsomewhereinbetweenonFebruary21attaintothemaximumamountoffrostheavingslopeto5.9mmthebottomofthecanalis4.8

8、mm4.0mmslopehoweverlightweightaggregateconcretecanalbasicfrostheavedidnothappen.(2)Accdingtothelawsofthecanaloffrostheavingdamagebyassumptionsimplifytheanalysisthecalculationoftrapezoidalconcreteliningcanalmodelissetupit

9、isconcludedthatthecanalslopeplatethecanalbottomoffrostheavefcecalculationfmulatryingtodrawitsdrawatrapezoidalconcreteliningcanalslopeplateisthemosteasytodamagelocationfromthecanalbottom13.(3)Lightweightaggregateusingfini

10、teelementsoftwareANSYSliningcanalfrostheavingprocessinhotstructurecouplingnumericalsimulationanalysisbycomparingthelightweightaggregateconcretedinaryconcreteliningcanaltemperaturefielddisplacementfieldstressfielditisconc