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时间:2020-03-24
《光纤式结冰传感器探测沥青路面结冰过程.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第31卷第4期2014年4月V01.31No.4Apr.2014doi:10.3969/j.issn.1002—0268.2014.04.002光纤式结冰传感器探测沥青路面结冰过程但汉成1一,刘扬3,凌桂香1一,梅世龙5,白诗尧14(1.贵州省交通规划勘察设计研究院股份有限公司,贵州贵阳550001;2.中南大学土木工程学院,湖南长沙410075;3.贵州省交通运输厅,贵州贵阳550003;4.山地交通灾害防治技术国家地方联合工程实验室,贵州贵阳550001;5.贵州省高速公路开发总公司,贵州贵阳550004)摘要:采用光纤式结冰传感器,利用凝冰实验室和高低温试验箱模拟路面结冰环境,测得了
2、不同降水温度和路面温度条件下的路面结冰厚度和结冰完成时间以探测沥青路面的结冰过程。试验研究表明:采用光纤式结冰传感器测得电压一时间曲线主要分为2种类型,与结冰的厚度有关;路面结冰完成时间整体上随着路面温度的降低而减少,2℃以下的雨水温度在约一2℃的路面温度情况下,形成1nlnl冰所需要的时间基本不超过10tllin,能覆盖沥青路面的构造深度;结冰完成时间整体上随雨水温度增大而上升,4℃雨水在路面温度处于一1~一3(℃条件下,形成6nlnl以下冰的时间不会超过30illin。关键词:道路3-程;沥青路面;路面结冰;光纤传感器;结冰机理;凝冻灾害中图分类号:U419.92文献标识码:A文章编号
3、:1002—0268(2014)04—0007—09ProbingFreezingProcessofIceonAsphaltPavementwithFiber-opticIceSensorDANHan—chen91,2,LIUYan93,LINGGui—xian91,4,MEIShi—lon95,BAIShi—ya01,4(1.GuizhouTransportationPlanningSurvey&DesignAcademeCo.,Ltd,Guiyang550001,China;2.SchoolofCivilEngineering,CentralSouthUniversity,Changs
4、ha410075,China;3.GuizhouProvincialDepartmentofTransportation,Guiyang550003,China;4.NationalEngineeringLaboratory-forMountainTrafficDisasterPreventionandControlTechnology-(Guizhou)Guiyang550001,China;5.GuizhouHighwayDevelopmentCorporation,Guiyang550004,China;)Abstract:Thefreezingenvironmentlaborato
5、ryandhigh—lowtemperaturetestchamberareemployedtosimulatepavementfreezingenvironment,andthefiber—opticicesensorisusedtodetectthefreezingmechanismoficeOilasphaltpavement.Theicethicknessandfreezingtimeofwatersprayedonthetestpavementsareobtainedundertheconditionsofdifferentwatertemperaturesanddifferen
6、tpavementtemperatures.Theexperimentalresultsshowthat(1)thevoltage—timecurvesobtainedthroughfiber—opticicesensorcanbeclassifiedas2fomlswhichdependsonthethicknessofice;(2)overall,thefreezingtimeofwateronthepavementdropsdownwiththedecreaseofpavementtemperature,andthefreezingtimeisnotbasicallvbeyond10
7、mintofoml1millthicknessiceundertheconditionthattheraintemperatureisbelow2oCandthepavementtemperatureisabout一2oC,accordingly,theicecancoveroverthetexturedepthofasphaltpavement;(3)overall,thefreezingtimeofrainonthe
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