考慮堆石流變特性的面板壩三維有限元分析.pdf

1、河海大學(xué)碩士學(xué)位論文考慮堆石流變特性的面板壩三維有限元分析姓名：張獻才申請學(xué)位級別：碩士專業(yè)：水工結(jié)構(gòu)工程指導(dǎo)教師：沈長松20070601AbstractRolledcuncretefacerockfilldamwhichhasdevelopedsincethelateof1960sundertheeffortsoftheintemationaldamworkersisakindofnewdamWiththemeritsofthethr

2、owedfilledfacerockfilldamandwithoutthedefectsofittherolledconcretefacerockfilidamhasbeengivengreatattentionbecauseofitsstrongpointsuchaslialeinput，shortperiodgoodsecurity。easyfindingmaterials，convenientconstructionfacili

3、tyriverdiversionandwideadaptabilityMethodssuchaslinearelasticfiniteelementmethodnonlinearfiniteelementmethodandelasticplasticityfiniteelementmethodCanbeusedinthestructuralanalysisofconeraefacerockfilldamThestructuralchar

4、actersofthefacerockfilldamcanbereflectedbytheresultsofnonlinearFEMandelasticplasticFEMinacertainextentHowevertherockfillwhichisneitherelasticbodynorplasticbodyisinfactasynthesiswhichhasqualitiesofelasticityplasticityandv

5、iscidityExceptstress，timealsohasinfluenceonthedistortionoftherockftll，andthiskindofmaterialcharacteristicisoftencalledrheologiccharacterThemostimportantmatteroftheconcretefacerockfilldamistocontrolthedistortionofthedambo

6、dyandthedamdistortionresultedbytherheologiccharacterisgreatlyinfluencedbytime，andmanyfacerocldilldamsalsohavesedimentationseveralyearsafteritscompletionSOconsideringtheinfluenceofthetheologiccharacterwhensolvingthedistor

7、tionofthefacerockfilldamisveryimportanttothedevelopmentoftherockfilldaminChinaFirst，theintroductionofthebasicelasticplasticitytheoriesofthenonlinearFMEinthehydro—structureprojectsisgiveninthispaperthenthebasicequations，c

8、onstitutiverelationsandyieldrulesofthematerialsundertheelastic—plasticconditionsareshowednlepaperalsohasgiventhemechanicsoftherheologiccharacterandseveralkindsofrheologicalmodels，andthesixparameterrheologicalmodelisusedi

9、nthepaperAfterreadinglotsofpaperswhicharerelatedinthenumericalsimulationinthehydraulicengineering，theauthorgivesmanynumericalsimulationmethodswhicharecommonusedinhydraulicstructureprojectsThepaperhasusedtheFEMsoftwareANS

10、YSandgiventhesecondarydevelopmentofitandthenumericalsimulationwhichfitstheconstitutiverelationsofrockfillisestablishedbytheuseofAODLlanguageAfterthemodificationofthematerialqualitysubroutineintheANSYSYsoftwarethesix—para