沥青混凝土连续配筋水泥混凝土复合式路面结构的力学分析

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1、东南大学硕士学位论文沥青混凝土+连续配筋水泥混凝土复合式路面结构的力学分析姓名：卢杨申请学位级别：硕士专业：道路与铁道工程指导教师：倪富健20060301ABSTRACTIntherecenttenyears，thefreewayconstructionofourcountryhasbeendevelopingrapidly．Thetotallengthhasexceeded30thousandkilometers．takingthe2*aplaceintheworld．Withtheincreaseoftraf

2、ficvolumeandoverloading,manyseriousdistresseshavebeentakenplaceonmoreandmorepavementaRerseveralyears，thismadethehighwayentertheperiodoflarge-scaremaintaueccahead．Soalonglifepavementwithhigherserviceperformanceisneededurgentlytomeettherequirement．Asphaltconcre

3、te+continuouslyreinforcedconcrete(AC+CRCP)compositepavementhasbettercarryingcapacityandserviceperformance．Whetherthiscompositepavementcanbeappliedasalonglifepavementevenneedstheorcticsanalysisendtechnologysupport．Basedontheinvestigationofcorrelativereferences

4、，correspondingmaththeoryandfiniteelementmethodwereusedtoanalysethemechanicscharacterofthecompositepavementinthispaper．Firstly,thethree-dimensionalfiniteelementmodelofCRCPwasestablishedbase00thedomesticandforeignreferences．Elementstyleofeachlayerandthedimensio

5、nofsubgradewereconfirmed．Secondly,theloadstressandthermalstressofCRCPwerecaculatedusingthefiniteelementmodel．ThenumericalanalysisWasdonetoshowthestressinCRCPandtoexplaintheinfluenceoftheconfigurationparameters．includingcrackspacing，steelratio(steeldiameter＆st

6、eelspacing)，bond-sliprelationbetweenthereinforcedbarandconcrete,CRCPthickness,CRCPwidthandSOon．Thirdly,basedontheanalysisofCRCP,thenumericalanalysisofAC+CRCPcompositepavementwasdonetodiscussthemechanicscharacter．Theresearchcontentmainlyconsistsoftheinfluenceo

7、foverlay,overloadingcapacityofthecompositepavement,shearstressunderhorizontalload，andoverlayfatiguelifeofreflectingcrack．Itisindicatedthat，thinasphaltconcretelayerismainlyusedtoimprovepavementperformance；andthickerasphaR∞ncfetelayercartreducethermalgradseffec

8、tively,thusthecompositepavementCanwithstandoverloadinginadistancetoavoidfatiguedestruction．Atlast,orthogonalityexperimentdesignmethodWasusedtochoosethetypicalstructureofthiscompositepavem