英语论文17137

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1、附录一HighwayengineeringroadbedconstructionqualityproblemexploreanalyseAbstracttheroadbedisthehighwayfoundation，foundation,itisacrucialroadportionoftissue.Roadbedconstructiongoodring，directlyaffecttheroadusagelife，alsorelatedtothesubsequentrepairdegreeandtime.Thisarticlefrom

2、thehighwayroadbedcommonetiologyanalysesproceedwith，putforwardtheroadbedconstructiontechnologyrequirement，elaboratedthemethodforSubgradeconstruction.KeywordshighwayroadbedconstructionqualityandtechnicalmeasuresTheroadbedisthebasisoftheroad，underthevehicleload，theprojecthas

3、thefollowingcharacteristics:engineeringamountbig,laborintensive,involvewide，investmentishigh.Subgradeengineeringquality，directlyaffectsthequalityofhighway，passengercomfortandnormaltraffic.OnthequalityofroadbedofHighwayDiseaseofmanyinfluencefactors，problemsalsooccurfrequen

4、tly,butmostofthemorbytheconstructionqualityproblemscausedby.Acommonetiologyanalysis,highwayroadbed:1roadbedsubsidence.Roadbedsubsidenceappearsthereasonmainlyhas:FillSubgradeduetoinadequatecompactionandsubsidence;bridgeandculvertchannelstructureandroadbedlinking-upofficesi

5、ncethematerialsusedimproperlyorwhenrollingthedifficultandcannotbefullycompacted，causinggradualsubsidenceofsoftsoilroadbed;withoutdisposalormethodisnotproperlycauseofsubgradesettlement.Atpresent，highway，constructioncycleisshort，notenoughnaturalsubgradesettlementtime，butdue

6、torushdeadlineswithoutnaturalsubsidenceofroadbedpavementfullybuilt，thesettlementoftheroadbedarereflectedontothepavement;roadbedconstruction,soilmoisturecontentistoolarge，cannotmeettherequirementsofspecificationofpressurefillingdensity,therebysubgradesettlementtoleavehidde

7、ntrouble.The2longitudinalcrack.Initialfillingroadbedwidthisinsufficient，tofillintoacertainheightthroughtheexaminationfoundthatfillisnotwideenough,ormidlinedeviation，tofilltheedge，intheband，andwasrequiredtodigstepandabottom-uphierarchicalplacementandcompaction,causedaftert

8、hecompletionoftheprojectbandsinking,thelongitudinalcrack;Jinganddoesnotreachthedesignatedpositio