BS CEN/TS 1793-5-2003 道路交通降噪设备.声学性能测定的试验方法.固有的特征.声音反射和空气载声隔绝的原地测定值
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【英文标准名称】:Roadtrafficnoisereducingdevices-Testmethodfordeterminingtheacousticperformance-Intrinsiccharacteristics-Insituvaluesofsoundreflectionandairbornesoundinsulation
【原文标准名称】:道路交通降噪设备.声学性能测定的试验方法.固有的特征.声音反射和空气载声隔绝的原地测定值
【标准号】:BSCEN/TS1793-5-2003
【标准状态】:现行
【国别】:英国
【发布日期】:2003-04-25
【实施或试行日期】:2003-04-25
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:Thepresentdocumentdescribesatestmethodformeasuringtwoquantitiesrepresentativeoftheintrinsiccharacteristicsoftrafficnoisereducingdevices:thereflectionindexforsoundreflectionandthesoundinsulationindexforairbornesoundinsulation.Thetestmethodisintendedforthefollowingapplications:—determinationoftheintrinsiccharacteristicsofsoundreflectionandairbornesoundinsulationofnoisereducingdevicestobeinstalledalongroads,tobemeasuredeitherinsituorinlaboratoryconditions;—determinationoftheinsituintrinsiccharacteristicsofsoundreflectionandairbornesoundinsulationofnoisereducingdevicesinactualuse;—comparisonofdesignspecificationswithactualperformancedataafterthecompletionoftheconstructionwork;—verificationofthelongtermperformanceofnoisereducingdevices(witharepeatedapplicationofthemethod).Thetestmethodcanbeappliedbothinsituandonbarrierspurposelybuilttobetestedusingthemethoddescribedhere.Inthesecondcasethesampleshallbebuiltasfollows(seeFigure1):—apart,composedofacousticelements,thatextends4mandis4mhigh;—apost4mhigh(ifapplicableforthespecificnoisereducingdeviceundertest);—apart,composedofacousticelements,thatextendsatleast2mandis4mhigh;NOTEForqualifyingthereflectionindexonly,itisonlynecessarytohaveacousticelementsthatextend4mormore.NOTEForqualifyingthesoundinsulationindexofpostsonly,itisonlynecessarytohaveacousticelementsthatextend2mormoreoneithersideofthepost(seeFigure1).Resultsareexpressedasafunctionoffrequency,inone-thirdoctavebandsbetween100Hzand5kHz.Ifitisnotpossibletogetvalidmeasurementsresultsoverthewholefrequencyrangeindicated,theresultsshallbegivenintherestrictedfrequencyrangeandthereasonsoftherestriction(s)shallbeclearlyreported.
【中国标准分类号】:P66
【国际标准分类号】:17_140_30;93_080_30
【页数】:46P;A4
【正文语种】:英语
【原文标准名称】:道路交通降噪设备.声学性能测定的试验方法.固有的特征.声音反射和空气载声隔绝的原地测定值
【标准号】:BSCEN/TS1793-5-2003
【标准状态】:现行
【国别】:英国
【发布日期】:2003-04-25
【实施或试行日期】:2003-04-25
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:Thepresentdocumentdescribesatestmethodformeasuringtwoquantitiesrepresentativeoftheintrinsiccharacteristicsoftrafficnoisereducingdevices:thereflectionindexforsoundreflectionandthesoundinsulationindexforairbornesoundinsulation.Thetestmethodisintendedforthefollowingapplications:—determinationoftheintrinsiccharacteristicsofsoundreflectionandairbornesoundinsulationofnoisereducingdevicestobeinstalledalongroads,tobemeasuredeitherinsituorinlaboratoryconditions;—determinationoftheinsituintrinsiccharacteristicsofsoundreflectionandairbornesoundinsulationofnoisereducingdevicesinactualuse;—comparisonofdesignspecificationswithactualperformancedataafterthecompletionoftheconstructionwork;—verificationofthelongtermperformanceofnoisereducingdevices(witharepeatedapplicationofthemethod).Thetestmethodcanbeappliedbothinsituandonbarrierspurposelybuilttobetestedusingthemethoddescribedhere.Inthesecondcasethesampleshallbebuiltasfollows(seeFigure1):—apart,composedofacousticelements,thatextends4mandis4mhigh;—apost4mhigh(ifapplicableforthespecificnoisereducingdeviceundertest);—apart,composedofacousticelements,thatextendsatleast2mandis4mhigh;NOTEForqualifyingthereflectionindexonly,itisonlynecessarytohaveacousticelementsthatextend4mormore.NOTEForqualifyingthesoundinsulationindexofpostsonly,itisonlynecessarytohaveacousticelementsthatextend2mormoreoneithersideofthepost(seeFigure1).Resultsareexpressedasafunctionoffrequency,inone-thirdoctavebandsbetween100Hzand5kHz.Ifitisnotpossibletogetvalidmeasurementsresultsoverthewholefrequencyrangeindicated,theresultsshallbegivenintherestrictedfrequencyrangeandthereasonsoftherestriction(s)shallbeclearlyreported.
【中国标准分类号】:P66
【国际标准分类号】:17_140_30;93_080_30
【页数】:46P;A4
【正文语种】:英语
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