季凍區(qū)瀝青路面縱向裂縫破損狀況評價與成因分析.pdf

1、東北林業(yè)大學碩士學位論文季凍區(qū)瀝青路面縱向裂穎破損狀況評價與成因分析姓名：任貴波申請學位級別：碩士專業(yè)：道路與鐵道工程指導教師：何東坡201106AbstractAbstractThisthesisismadewiththedataonthebasisoffieldinvestigationofhigh—classhighwayintheseasonalfrozenregioninHeilongjiangprovince，statist

2、icsisspreadontheregularityofplacedistributionoflongitudinalcracksonbituminouspavement，andtheresultshows：longitudinalcracksofhighclasshighwayhavethecentrosymmetricdistributionsymmetricallywithmedianseparatorasthecenterand

3、mainlyrestintheleftandrightwheeltrackonthepassinglaneandcarriagewayoffreewayWhilethelongitudinalcracksonthemotorwaydistributedissymmetricallyOntheleft，longitudinalcracksmainlyappearontherightwheeltrackofcarriagewayandont

4、heright，theyoftenspreadnearthecentrallineofthewayandtheleftandrightwheeltrackEvaluationmodelofdestructiongradeoflongitudinalcracksissetupwiththematterelementtheoryofextenics，inwhichthequalitativeandquantitativeevaluation

5、ismadefortheindexonlengthandwidthofcracksthroughthecalculationofextensiondependentdegreeAndthedependentdegreeisintokenofdamagedegreeoflongitudinalcracksandtherelationbetweenvariousclasses，therebyitCanberealizedtoestimate

6、theclassestowhichdamagedegreeoflongitudinalcracksbelongTospecifythemainformationcausesofbituminouspavementfordifferentroutesintheseasonalfrozenregion，compositiveanalysisonthelongitudinalcracksformationwillspreadonthebasi

7、softheformoflongitudinalcracksanditsregularityofplacedistributionaswellastransportationloadandfrostthawing，andtheresultshowsthatundertemperature，waterheightofsubgradeandtransportationload，themaincausesrestinreflectionofl

8、ongitudinalcracksonbasecourse，shortageofsubgradestrengthafterfrostthawing，differentialfrostheaveofroad，ununiformityofsubgradebearingcapacityfromwaterinvasionanddifferentialsubsidenceofnewandoldsubgradesTheresultcanprovid

9、eparametersforroaddesignandtechnicalapprovalformaintenanceandmanagementAndtherewillbepracticalsignificanceinprolongingthelifeofhighwayandinimprovingtheserviceintheseasonalfrozenregionKeywordsseasonalfrozenregion；bitumino