旧水泥混凝土路面沥青加铺层设计方法研究

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1、重庆交通大学硕士学位论文旧水泥混凝土路面沥青加铺层设计方法研究姓名：付修竹申请学位级别：硕士专业：道路与铁道工程指导教师：吴国雄20080301AbstractPavingasphaltpavementontheoldconcretepavementisacommoneffectivetechniqueforpavementrenovation．Ithastheadvantagessuch嬲shortconstrucfionperiod，littleinfluenceontransportationandgoodserviceafterrenovation．Soitha

2、sbeenthecommonmeasuretoimprovethepavementperformance．Butduringtheusingofasphaltoverlay,iteasilyemergesthereflectivecrackinginasphaltconcretepavement,andthisbringsnegativeinfluencesonthelifeofpavement．Sohowtodelayandrestrainreflectivecrackisthekeytothedesignmethodforasphaltconcreteoverlay

3、ontheoldcementconcretepavement,whichisalsoacrux．Atpresent,allofthedesignmethodsforasphaltconcreteoverlayathomeandabroadarenotperfect,andthereisnotyetanacceptedreasonableandfeasibledesignmethod．Inthispaper,onthebasisofpreviousstudies，consideringthereflectivecracking,thedesignmethodforasph

4、altconcreteoverlayontheoldcementconcretepavementisfurtherdiscussedandexplored．Thedesignmethodforasphaltconcreteoverlayontheoldcementconcretepavementinvolvesnotonlythedamageofoldroad，structuralconditions，traffiecollditions，environmentalfactors，butalsoreasonablemechanicalanalysismodel，thec

5、orrectmaterialparametersandeffectivemeasurestopreventingreflectivecracking,andSOon．Thefactorsinvolvedareveryextensive，complexanddynamic．Thepaperstartedwiththeinvestigationandassessmentoftheoldroad,establishedacomprehensiveevaluationsystemforoldcementconcretepavement，whichincludestwoaspec

6、ts：pavementapplicationperformanceandstructuralperformanceincludingsixindex，inordertoidentifythesectionstobereconstructedandthetreatingprograms．aswellastoprovideabasisandsomedataformeasphaltoverlaydesign．Thepapercomparedandanalyzedseveralrelativelymatureddesignmethodstoproposesomeaspectsw

7、orthytobeinglearnedorneedtobeimproved．Applyathree．dimensionalfiniteelementanalysisprogramtocomputethemechanicalresponseofasphaltoverlaywithgeosyntheticsinterlayerundertheactionofload，analyzetheinfluenceofparameterslikeasphaltoverlaythickness，asphaltoverlaymodulus，oldcemen