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1、RigidPavementDesignDeficiencies,MajorshortcomingsofJPCPdesignsbasedon1972-1986versionsoftheAASHTOGuide:inadequatejointloadtransfer,longjointspacing,erosionofbase/subbase,poorsubdrainageetc.DeteriorationoccursearlyRehabilitationneeded,DevelopmentofSupplementalAASHTODesignProcedureforJPCP,Seriousdefic
2、ienciesnotedin1986AASHTOprocedureStudiesshowedmajorflawsinbase/subgradesupportproceduresNoeasyfixesImprovedstructural(3Dfiniteelement)modelforJPCPwasdevelopedtocorrectdeficiencies,Development,Validation,Adoption:1998SupplementalRigidPavementDesignProcedure,DevelopedunderNCHRPProject1-30(Universityof
3、IllinoisatUrbana-Champaign)ValidatedunderFHWA/LTPPresearchstudy(ERESConsultants/ARA)AdoptedbyAASHTOasSupplementaryRigidPavementDesignProcedure(1998)FHWA/LTPP-SupplementaryRigidPavementDesignSpreadsheet(ERESConsultants/ARA),OnlyJPCPForNow,Jointedplainconcretepavement(JPCP),Mostconstructedrigidpavemen
4、tBasicdesignproceduredevelopedProcedurefieldverified,Jointedreinforcedconcretepavement(JRCP)Continuouslyreinforcedconcretepavement(CRCP),Limitedfieldverification,UseofLTPPDatatoVerify1998AASHTODesign,DesignprocedureverifiedusingfielddatafromLTPPInputsto1998AASHTOdesignmodelobtainedActualtrafficlogES
5、ALscomparedtopredictedlogW(ESALs)Nosignificantbiasfoundinpredictingserviceabilityofpavementsinfourclimaticzones,PRESENTATIONOBJECTIVES,WhatistheRigidPavementDesign(RPD)Software?DevelopmentofRPDSoftwareRPDSoftwareFeaturesandCapabilitiesHowToUseTheRPDSoftwareWhoShouldUsetheRPDSoftwareandWhyHowtoGetthe
6、RPDSoftware,RigidPavementDesignSpreadsheet:Features,Informationsheetcontainingspreadsheet“UserGuide”,RigidPavementDesignSpreadsheet:Features,Commandbuttonsforeasynavigationbetweensheets,RigidPavementDesignSpreadsheet:Features,Commandbuttonlinkstoreferencetables,Jointspacingandedgesupportconditionsar
7、edirectinputs,RigidPavementDesignSpreadsheet:Features,Climaticpropertiesaredirectinputsinthesupplementalrigidpavementdesign,RigidPavementDesignSpreadsheet:Features,Truesubgradek-valueisused(notadjustedfortop-of-base),RigidPavementDesignSpreadsheet:Features,Easylinkstosensitivityanalysisforvariousdes
8、igninputs,RigidPavementDesignSpreadsheet:Features,Projectdatacanbesavedinrowsandexportedtothemainsheets,RigidPavementDesignSpreadsheet:Features,SensitivityAnalysisplotdisplaysinputsheldconstant,RigidPavementDesignSpreadsheet:Features,Resultssheetcanbeviewedonscreenorcanbeprinted,RigidPavementDesignS
9、preadsheet:Features,Calculationsheetshowsallcalculationsanddisplaysdesigntrafficfordifferentslabthicknesses,RigidPavementDesignSpreadsheet:Features,FaultingChecksheetusedtoestimatefaultingoverdesignlifefordoweledandnondoweledpavements,PRESENTATIONOBJECTIVES,WhatistheRigidPavementDesign(RPD)Software?
10、DevelopmentoftheRPDSoftwareRPDSoftwareFeaturesandCapabilitiesHowToUseTheRPDSoftwareWhoShouldUsetheRPDSoftwareandWhyHowtoGettheRPDSoftware,SystemsRequirements,IBMPCrunning:MicrosoftOffice95or97orMicrosoftExcel7.0,UsingTheRPDSoftware,CopytheRigidPavementDesign(RPD)SoftwarespreadsheettotheharddriveTheR
11、PDsoftwarecannotberunfromthefloppydriveOpentheRPDspreadsheetusingMicrosoftExcel,UsingTheRPDSoftware,ClickonEnableMacrostoallowexecutionofspreadsheetmacros,UsingTheRPDSoftware,ClickonInputFormtoaccessthemainsheet,UsingTheRPDSoftware,EnterGeneralInformationfortheprojectasshownbelow:,UsingTheRPDSoftwar
12、e,ScrolldowntoenterServiceabilityandPCCProperties,UsingTheRPDSoftware,EnterBaseProperties,Reliability,andStandardDeviation,ClickonTable14forfrictionfactorsfordifferentbasetypes,UsingTheRPDSoftware,ClickonInputFormtonavigatebacktothemainscreen,UsingTheRPDSoftware,SelectPavementTypeandEdgeSupportCondi
13、tion,EnterJointSpacing,UsingTheRPDSoftware,EnterClimaticPropertiesforthedesignregion.ClickonTable15forclimaticpropertiesformajormetropolitanareasineachState.,Forthefirstrunentertheapproximatesubgradek-value,UsingTheRPDSoftware,ClickonCalculateTrafficfortrafficcalculationworksheet,UsingTheRPDSoftware
14、,AfterenteringtrafficdesigninputsclickCalculate,ClickExporttoInputForm,UsingTheRPDSoftware,ClickonCalculateonthemainsheettocalculatethicknessfordesigninputs,ClickonCalculateSeasonalk-Valueforcalculatingseasonallyadjustedk-value,UsingTheRPDSoftware,Enternumberofmonthsandsubgradek-valueforeachseason.C
15、lickCalculate.,UsingTheRPDSoftware,Usethecharttoestimateadjustedk-valueforfilllayerabovethesubgradeand/orrigidlayerbeneaththesubgrade,UsingTheRPDSoftware,ClickonCalculateonthemainsheettorecalculatethicknessfordesigninputswiththeadjustedk-value,UsingTheRPDSoftware,Enterthicknessforsensitivityanalysis
16、,ClickSlabThicknessSensitivityforsensitivityanalysisofdesigntraffictoslabthickness,Clickonradialbuttonsforsensitivityanalysisofdesigntraffictodifferentdesigninputs,UsingTheRPDSoftware,UsingTheRPDSoftware,UsingTheRPDSoftware,ClickonFaultingChecktoperformchecksfordoweledandnondoweledfaulting,UsingTheRPDSoftware,Enterdoweldiameterandotherdesigninputsfordoweledpavements,UsingTheRPDSoftware,ClickonFITableorDrainageCoeff.Tablefortablescontaininginformati
