Page 156 - 《水资源与水工程学报》2023年第1期
P. 156

!34 " ! 1 #                       & ' ( ) & * + , -                               Vol.34No.1
               2023 $ 2 %               JournalofWaterResources&WaterEngineering                 Feb.,2023

            DOI:10.11705/j.issn.1672-643X.2023.01.18


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                 FGHIJ:TV67   KLMNO:A    KPQJ:1672643X(2023)01015207
               Frostheavingmechanicalmodeloftrapezoidalcanalconsideringnonlinear
                             distributionofnormal/tangentialstressoninterface

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                                                                                                        4
                                           1
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                          1
                XIAOMin,XIONGZhihao,WANGZhengzhong ,WULang,CUIHao,YANGXiaosong
               (1.SchoolofArchitecturalEngineering,JiangxiScience&TechnologyNormalUniversity,Nanchang330013,China;2.Water
                   EngineeringSafetyResearchCenterforArid&ColdRegions ,NorthwestA&FUniversity,Yangling712100,China;
                    3.StateKeyLaboratoryofFrozenSoilEngineering,NorthwestInstituteofEcoenvironmentandResources,Chinese
                     AcademyofSciences ,Lanzhou730000,China;4.CollegeofWaterConservancyandArchitecturalEngineering,
                                              TarimUniversity,Alaer843300,China)
                 Abstract:Fortrapezoidalcanalsinopenwatertransfersystems,anovelmethodforcalculatingthedistri
                 butionofnonlinearnormalfrostheavingforcewasproposedconsideringthehorizontaldifferenceofdis
                 tancetogroundwatertableofeachtestpoint.ThenWinklerassumptionofthetangentialforceonthein
                 terfaceoffrozensoilandliningwasintroducedtoderiveacalculationmethodofthedistributionofnon
                 lineartangentialadfreezingforce.Eventually ,afrostheavingmechanicalmodeloftrapezoidalcanalcon
                 sideringnonlineardistributionofnormal/tangentialstressontheinterfacewasconstructed.Takinga
                 trapezoidalcanalinTarimIrrigatedAreaasanexample ,theinfluenceofgroundwatertableburieddepth
                 wonthedistributionofsectionmomentofconcreteliningwasanalyzedbythismodel.Theresultsshow
                 thatthesmallerthe wis,themorenonlinearlyandrapidlythemaximumvalueofsectionmomentincrea

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