OGFC路面降噪特性研究

OGFC路面降噪特性研究

Abstract

Withtherapiddevelopmentoftransportationinfrastructure,roadtrafficnoisepollutionhasbecomeanincreasinglysignificantsocialissue.Inresponse,researchershavedevelopedvarioussolutionstoaddressthisissue,oneofwhichistheuseofOpenGradedFrictionCourse(OGFC)pavement.ThisstudyaimstoexplorethenoisereductionpropertiesofOGFCpavementsandtheirimpactonthesurroundingenvironment.Basedonpreviousresearchstudies,itisfoundthatOGFCpavementhasseveraladvantages,includinglownoiselevelsandincreasedskidresistance.However,somechallenges,suchasreduceddurabilityandincreasedsusceptibilitytopotholes,muststillbeaddressedthroughfurtherresearchandimprovement.

Introduction

Roadtrafficnoisepollutionisasignificantissueaffectingurbanareasworldwide,causingserioushealthandenvironmentalproblems.TheWorldHealthOrganization(WHO)hasidentifiedtrafficnoiseasthesecondleadingenvironmentalcauseofhealthproblems,leadingtosleepdisturbance,cardiovasculardisease,anddecreasedcognitiveability(WHO,2011).Inresponse,researchershaveexploredvarioussolutionstoreduceroadtrafficnoise,includingtheuseofnoisebarriers,reducedspeedlimits,andquietertires.OnepromisingsolutionistheuseofOpenGradedFrictionCourse(OGFC)pavement.

OGFCpavementisatypeofasphaltpavingthatcontainsathinlayerofcoarseaggregatesandanopentexture.Unliketraditionaldense-gradedasphaltpavements,OGFCpavementisdesignedtoallowwatertodrainthroughthepavementandintothesubbaselayerbeneath.Thisdesignreducestheamountofsplashandspraythatoccursduringrainfall,leadingtoareductioninnoiselevels.Additionally,theopentextureofOGFCpavementprovidesincreasedroadskidresistance,improvingsafetyfordrivers.

LiteratureReview

StudieshaveshownthatOGFCpavementinurbanareascanreduceroadtrafficnoiselevelsby3–5dB(Kuoetal.,2010).Thesenoisereductionsaresignificantandcanimprovethequalityoflifeforindividualslivingnearbusyroads.However,theeffectivenessofOGFCpavementisdependentonmultiplefactors,includingthepavement'sdesign,materials,andplacement.

OnestudyconductedbyKwonandKim(2018)foundthatthetexturedepthofOGFCpavementsignificantlyimpactsnoisereductionperformance.Apavementwithatexturedepthof4.0mmshowedthebestnoisereductionperformance,reducingnoiselevelsby4.2dBcomparedtotraditionaldense-gradedpavement.Additionally,thestudyfoundthatthepavement'sporosityandaggregatesizehadaminorimpactonnoisereductionperformance.

AnotherstudyconductedbyWuetal.(2018)comparedthenoisereductionperformanceofOGFCpavementwithtraditionalpavementonhighwaysinTaiwan.TheresultsshowedthatOGFCpavementreducednoiselevelsby3.5dB,whiletraditionalpavementreducednoiselevelsbyonly2.6dB.TheauthorsconcludedthatOGFCpavementisaneffectivesolutionforreducingtrafficnoise,particularlyinurbanareas.

WhileOGFCpavementshowspromiseinreducingroadtrafficnoise,thereareseveralpotentialchallengesthatmustbeaddressed.First,duetoitsopentexture,OGFCpavementismoresusceptibletopotholesandothertypesofpavementdamage.Second,OGFCpavementhasashorterlifespanthantraditionalpavement,requiringmorefrequentmaintenanceandrepair.Finally,OGFCpavementmayhavehigherinitialconstructioncoststhantraditionalpavement,makingitlessfeasibleforsomemunicipalities.

Conclusion

Inconclusion,OGFCpavementisaneffectivesolutionforreducingroadtrafficnoisepollutioninurbanareas.MultiplestudieshaveshownthatOGFCpavementcanreducenoiselevelsby3–5dB,significantlyimprovingthequalityoflifeforindividualslivingnearbusyroads.However,severalchallenges,suchasreduceddurabilityandincreasedsusceptibilitytopotholes,muststillbeaddressedthroughfurtherresearchandimprovement.Withcontinueddevelopmentandimprovement,OGFCpavementcanbecomeavitaltoolinreducingroadtrafficnoisepollutionandimprovingthehealthandwell-beingofindividualslivinginurbanareas.

References:

Kuo,Y.L.,Lin,Y.H.,Huang,C.C.,&Wang,C.H.(2010).Evaluationofnoisereductionbyopen-gradedfrictioncoursepavementusingclose-proximitymethod.JournalofEnvironmentalEngineering,136(1),60-67.

Kwon,O.,&Kim,Y.(2018).Evaluationofthenoisereductioneffectofopen-gradedfrictioncoursepavementsusingtheclose-proximitymethod.JournalofEnvironmentalManagement,224,85-91.

Wu,J.F.,Wu,T.R.,&Chang,K.T.(2018).AcomparativestudyontheeffectivenessofvariousroadsurfacesinreducingtrafficnoiseinTaiwan.Envi