透水型沥青路面材料的降噪性能收稿日期:2022203215基金项目:国家/8630计划重大项目(2006AA11Z117)作者简介:丁庆军(19622),男,吉林蛟河人,教授,工学博士,E2mail:wwwsf5227@https://www.sodocs.net/doc/1d16889371.html。第30卷第2期2022年3月长安大学学报(自然科学版)JournalofChangpanUniversity(NaturalScienceEdition)Vol.30No.2Mar.2022文章编号:167128879(2022)022*******透水型沥青路面材料的降噪性能丁庆军1,沈凡1,刘新权1,2,刘祖国3,胡曙光1(1.武汉理工大学材料科学与工程学院,湖北武汉430070;2.湖北省交通规划设计院,湖北武汉430051;3.武汉市城市高速公路指挥部,湖北武汉430345)摘要:以透水型路面为研究主体,利用驻波法测试材料的吸声系数,研究空隙率、粒径和厚度等因素对材料吸声系数的影响规律,探讨多孔路面结构的吸声降噪机理,并结合试验路段的噪声测试结果,评价路面现场降噪性能。研究结果表明:透水型路面中大量的连通孔隙能够有效地吸收路面噪声,随着厚度的增加,其吸声系数峰值向低频移动,小粒径透水型沥青路面材料具有更佳的吸声性能;当采用20%空隙率、40mm厚的OGFC213混合料时,吸声系数均值达到0.402,吸声系数峰值达到0.669;透水型沥青路面与普通AC213C路面相比,路面现场噪声降低了4.7dB(A);透水型沥青路面材料是一种降噪功能优异的路面材料。关键词:道路工程;透水型沥青路面;噪声;驻波法;吸声系数中图分类号:U414;O442文献标志码:ANoise2dampingperformanceofdrainingasphaltpavementDINGQing2jun1,SHENFan1,LIUXin2quan1,2,LIUZu2guo3,HUShu2guang1(1.SchoolofMaterialsScienceandEngineering,WuhanUniversityofTechnology,Wuhan430070,Hubei,China;2.HubeiProvinceInstituteofCommunicationsPlanningandDesign,Wuhan430051,Hubei,China;3.WuhanUrbanExpresswayConstructionHeadquarters,Wuhan430345,Hubei,China)Abstract:Byusingstationarywavemethodtotestsoundabsorptioncoefficientofdrainingasphaltpavement,thesoundabsorptionruleofdrainingasphaltpavementwithdifferentporosities,grainsizesandthicknessesishttps://www.sodocs.net/doc/1d16889371.htmlbiningthenoisetestingresultofexperimentalroad,thedenoisingperformanceofdrainingasphaltpavementisevaluated.Thetestresultsshowthat:thedrainingasphaltpavementcanabsorbtheroadnoiseeffectively,whichhasalotofconnectedporosities,andwhoseaverageandpeakofsoundabsorptionmovestowardtolowfrequencywhenthethicknessisincreased,andthesound2absorbingperformanceisbetterwhileusingsmallersizenominalmaximumsizeofaggregate.TheaverageandpeakofsoundabsorptioncoefficientofOGFC213are0.402and0.669respectively,whenporosityis20%,thicknessis40mm;ComparingwiththecommonAC213Casphaltpavement,thenoiseintensityofexperimentalroadisreducedby4.7dB(A)whiletestedinhigh2speedtraffic.So,thedenoisingperformanceofdrainingasphaltpavementisexcellent.4tabs,5figs,13refs.Keywords:roadengineering;drainingasphaltpavement;noise;stationarywavemethod;soundabsorptioncoefficient本文来源：网络收集与整理，如有侵权，请联系作者删除，谢谢！---本文来源于网络，仅供参考，勿照抄，如有侵权请联系删除---
