高速鐵路輻射噪聲特性及控制措施研究.pdf

1、北方交通大學碩士學位論文高速鐵路輻射噪聲特性及控制措施研究姓名：王光蘆申請學位級別：碩士專業(yè)：車輛工程指導教師：劉達德2000.1.1Abs_【ractAbstractBecauseofit’stechnicaladvantagesofhighspeed，largecapabilityoftransportation，lowlevelofexpendingenergyandlightlevelofpollution，thehigh—sp

2、eedrailwayadaptstorequirementoftheeconomicdevelopmentofmodelsocietyHoweverthehighspeedrailwayalsoCausessomeenvironmentalproblems，theyincludethedisturbanteofnoise，vibrationaswellasthedisturbanteofelectromagneticwave、allof

3、them，thedisturbanceofnoisehasthelargesteffectonthesocietyThispaperbasesonthedevelopmentprojectofscienceandtechnologybureauoftheRailwayMinistry《theresearchofconfirmingthenoiselevelandcontrollingmeasuresofBeringShanghaihig

4、h—speedrailway))也eauthormakesaseriesofreseatchandexperimentaboutthenoisepollutionofthehigh—speedrailwayItgivesanoutlineofthepresentresearchsituationofinternalandextemalmethodstocentrelhighspeedrailwaynoiseandcomparesther

5、esearchofthenoiselevelofsomenationsThepaperdrawssomeconclusionsaboutthebasicfeatures(suchasthenoiselevel，thereductionrule)ofourcountryhigh—speedrailwaynoiselevel，accordingtothelivingmeasureofhighspeedtrainwhichranbetween

6、GuangzhouandShenzhenBasisoftheexperienceofcontrollingthehighspeedrailway’snoiseallovertheworld，Itexpoundsthecauseofrollingnoise，andeducestheruleofgeometryattenuationtheoreticallythennarrateshowtoeffectivelyreducetherolli

7、ngnoisefromtwoaspectsoftherailandtrainItanalysestheproducemechanismoftheviaductnoisethecharacterofspectraldistributionandsystematicallydiscussesallkindsofavailablemethodsofdecreasingvibrationandlowingnoiseItdetailedlyana

8、lysestheaerodynamicresistancewhichhascloserelationtotheaerodynamicnoisethennarratesallkindsofaerod37namicnoiserespectivelyanddiscusseshowtoanticipateit’snoiselevelItprobesintothecauseandthespectralcharacterofthreekindsof

9、currentcollectionnoiseandexpoundsallkindsofeffectivemeasureswhichincludeinstallingthepantographcoverAtlast，ItnarratestheprincipleofthenoisebarrierattenuationandtheformulaeofcalculatingattenuationofnoisebarrierItprovidest