基于施工過程的端部非錨固定連續(xù)配筋混凝土面結構分析.pdf

1、東南大學博士學位論文基于施工過程的端部非錨固定連續(xù)配筋混凝土面結構分析姓名：羅翥申請學位級別：博士專業(yè)：交通運輸工程；道路與鐵道工程指導教師：付智201110AbstractContinuouslyReinforcedConcretePavement(CRCP)werewidelyusedforitsmanyadvantageslikehighbearingcapacitykeepingthesmoothridingsurfacelon

2、ger，lowmaintenancecostsetcBasedonthestructuralenditc鋤bedividedintofixedendandunfixedendResearchOiltheunfixedendofCRCPiSnotyetwidelyconductedandthereisnostrictdistinctionbOtweenfixedendandunfixedendstructureindesignmethod

3、sThedesignmethodgaveauniform25mmjointexpansionwhichcannotsuitdifferentsiteconditionsOntheotherhandthedesignmethoddidnottakeaccountofthehydrationtemperatureandshrinkagedeformationofconcreteduringtheconstructionprocess，whi

4、chmayresultinsomeerrorTherelationshipbetweencrackingpatternandstructureparametersofCRCPwithunfixedendwasproposedbytheoreticalmethodanda&signmethodbasedontheconstructionprocessWaSobtainedTheCRCPwithunfixedendWaStakenasawh

5、olestructureinthemodelTheinteractionbetweenconcreteandsteelaswellasconcreteandfoundationWasanalyzedtogeneratethetemperatureshrinkageconstitutiveequationofCRCEInthecaseoftheunfixedendboundarycondition，theexactsolutionofst

6、ressandstrainwascalculatednomatterhowmanycracksinthepavementForthehugeamountsofcalculationwhichhardtodealingwithbymanualausersubroutines，basedOilMatlabsolhvarcenvironment，Wasdevelopedtoanalyzinganddiscussingtheanalyticso

7、lution，summarizingcrackingpattern，graphicaloutputanalysisBased011theexamples，thecrackingprocessofunfixedendCRCPwasanalyzedThestudyshowedthat：CRCPcracksoccurredinbatches，tookplaceattheconcretepeal(stressorderlywithacleart

8、imeseriesBoththecrackspacingandthepeakstressdecreasedbycrackingThecrackingprocessofCRCPCanbesummarizedasfollows：theconcretestressandreinforcementstresswasgraduallyreleasedbythebatchescracking，andsomewidecmcksturnedintoma

9、nysmallonestomakethestructuremorestableThecrackwidthdistributioninpavementswassummarizedbyseveraltheoryofreinforcedconcretestructureandsomeexperimentalobservationandthenthesteelarrangeinpavementswasproposedThetensilestre

10、ngthelasticmodulus，stressrelaxation，thermalexpansioncoefficientofconcreteduringconstructionperiodWassummarized。TheincrementalsuperpositionmethodwasusedtocalculatethethermalstressandshrinkagestressAccordingtothestructural