三峽三期碾壓混凝土拱圍堰方案研究

1、廣西大學(xué)碩士學(xué)位論文三峽三期碾壓混凝土拱圍堰方案研究姓名：張偉申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：水工結(jié)構(gòu)工程指導(dǎo)教師：張仲卿2003.5.1目錄Study012theProposaloftheThirdStageRCCArchCofferdamforThreeGorgesProjectABSTRACTBasedonthedesignproposalofthethirdstageRCCarchcofferdamfortheThreeGorgesPr

2、oject，proposedbyProfZhangZhongqing，thispapercomprehensivelystudiedit，usingthreenon1inearFEMmethodsIntheprocession，staticanalysis，stabilityagainstslidinganalysis，modalanalysis，responsespectrumanalysis，transientdynamicanal

3、ysis，temperaturefieldandthermalstressanalysisaredone，andinordertomaketheproposalperfectly，theoptimizationanalysisisdonetooUnderthemsearchworkofmytutor，thefollowingcontentsarestudied1Thestressfieldanddisplacementfieldunde

4、rbasicloadcombinationareanalyzed，andPointsafetyagainstslidingandstabilizationsafetyfactoragainstslidingarealsoanalyzed，SOthatthestructuralconditionunderstaticloadiscompletelystudied2Thefailuremechanismofstructureisanalyz

5、edinthiswaythesafetyfactorunderwaterpressoverloadisacquired，SOthatthesafetystockandthefailureprocessingCanbeclearlyknown3Inordertoknowthestructuralconditionunderdynamicloadclearly，modalanalysis，responsespectrumanalysisan

6、dtransientdynamicanalysistothestructureareanalyzedIntheresponsespectrumanalysis，notonlytheearthquakeloadisconsidered，butalsootherloadsincludinggravity，waterpressureandtemperaturedropareallconsideredforacquiringthepractic

7、alactionofloadcombination4Consideringallkindsofchangesofmaterialandenvironmentduringthewholeconstruction，thetemperaturefieldandthermalstressareanalyzed5ThemathematiCmodelforoptimizationanalysisiSdeterminedbyfoundingparam

8、etricmodel，selectingthevolumeofarchcofferdamasobjectfunction，andselectinggeometricconstraintconditions，stressconditionsandstabilizationagainstslidingconstraintconditionsTheshapeohmizationofthestructureisthenanalyzedtoacq