預(yù)應(yīng)力RPC-NC組合截面梁優(yōu)化設(shè)計與研究.pdf

1、同濟(jì)大學(xué)土木工程學(xué)院碩士學(xué)位論文預(yù)應(yīng)力RPCNC組合截面梁優(yōu)化設(shè)計與研究姓名：顧俊頡申請學(xué)位級別：碩士專業(yè)：結(jié)構(gòu)工程指導(dǎo)教師：屈文俊20090301AbstraetABSTRACTTodesignconcretestructureswitllbetterdurabilityisatrendintheresearchofcivilengineeringItenablessustainabledevelopmentofconcretestr

2、uctures，nledeficiencyoftraditionalreinforcedconcretebeamusuallyhappensinthecomerofthetensionzoneItisbecausetheextracarbonationspeedofthecomermakestherebarsinthecomercorrodedmorequicklyandtheanticorrodeexpansionabilityoft

3、hesectioncomerisrelativelyweakThus，thecomerofthetensionzoneistheweakestzoneofreinforcedconcretebeamandtheenhancementinthedurabilityoftensionzoneconcreteisthekeytothedurabilityofthewholebeamsectionTllisthesisproposedanewr

4、einforcedconcretebeamtypeprestressedRPCNCcombinedsectionbeam，fromtheangleofoptimizingthedurabilitydesignofbeamsection，makinguseofthehighdurabilityofanewmaterialReactivePowderConcrete(RPC)andconsideringitshighbrittlenessT

5、heRPCiscastedinthetensionzoneofthebeamwhichwouldprotectthetensionrebarsThesectionisprestressedtoavoidingthebrittlenessofRPCThemainworkofthethesisissummarizedasfollows：1ThedurabilityproblemofconcretestructureWassummarized

6、ThelatestresearchprogresshomeandabroadofthenewmaterialRPCWasreviewedandanaiyzedAccordingtothecharacteristicsofRPCandtheconcretestructure，theprestressedRPCNCcombinedsectionbeamwasproposedanditscharacteristicswereanalyzed2

7、ThemechanicsandserviceperformanceoftheprestressedRPCNCcombinedsectionbeamwereanalyzed；theformulasofcrackingmoment，ultimatemoment，crackspacing，crackwidth，stiffnessandetcwerededuced3nletheoryofoptimizingdesignWassummarized