探地雷达在桥梁工程检测中的应用分析

《探地雷达在桥梁工程检测中的应用分析》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、ABSTRACTThepaperapplyGPRtotestthebridgeprestressedpipeanddefectsoflargevolumeconcreteonthebasisoftheexistingtheoryandapplicationofreinforcedconcretesnuCnlreabouttestingandevaluation,themainachievementsareasfollows：①Consultingalargenumberofrelateddocuments，comparativelyanalysesthecu玎eutco

2、mmonlyusedinbridgestructuralnondestructivetestingtechnology,ExpoundthebasictheoryandapplicationtechnologyofGPRnondestructivetestingtechnology．②ApplyHIRESSantennaarrayGPRtotestandevaluatethelocationandgroutingcompactnessofindoorreservationpipeline．Concluded：1)Forlocatingdetectionofthepipe

3、，measuringlineshouldbeperpendiculartothepipeaxis，thesignalisstronger,reflexarcisclearer,andusetheT-D笋ayimagedisplay；2)Forthedetectionofgroutingcompactnessofdeeperplasticpipe，suggestmeasuringlineperpendiculartothepipeaxial，Accordingthechannelinformationofradarwavetojudgethegroutingcompact

4、ness，Densegroutingpipepresentssinglevibrationphase，defectivepipepresentsdoublevibrationphase．③ApplyHIRESSantennaarrayGPRtotestandevaluatethegroutingcompactnessofactualT-beamprestressedplasticcorrugatedpipe．Concluded：1)Whenthecorrugatedpipeisnotdenseandhavedefects，itwillhaveverystrongelec

5、tromagneticwavereflection，andthewaveformisnotcontinuous，Whenthecompactiongrouting，thereflectionsignalisweak；2)ForthedetectionoftheinternalgroutingconditionofT-beamplasticpipe，wesuggestmeasuringlineparalleltothepipeaxial，itisnotonlyhighefficiency,butalsovisualeffectusingT-Dcolordisplay．④T

6、hroughseparatelyuseofHIRESSantennaarrayGPRand900MHZsingleantennaGPRtotestpilecapconcretedefects．Concluded：1)Whentheconcretehasnodefects，reflectwaveintensityisweaker；whentheconcretehasdefects，reflectwaveintensityisstronger,andthewaveformisnotcoutinuou；2)GPRCandetecttheposition、shapeandran

7、geofinternaldefectsofconcrete，testresultsareaccurateandreliab】e．KEYWORDS：groundpenetratingradar(GPR)；bridgestruction；nondestructivetesting；prestressedpipe；concretedefects目录第一章绪论⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯。l1．1选题背景⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．11．2预应力管道病害及检测方法⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．11．2．1病害及