桥梁检测

DataCollectionandProcessingMethodology工作照片Model5100天线波形调整Figure3:Exampleofclippedwaveform(gainsetmuchtoohigh).Clippingmustbepreventedforaccuraterebardepthandamplitudemeasurements.Priortocollectingthedatatheusermustmanuallydecreasethegain.Figure2:Badlypositionedwaveform.Thedirectcouplingisnotlocatedinthewindow.Usingthesignalpositionedasshowninthisfigurewouldcausetheprogramtogiveerroneousresults.Priortocollectingdatatheusermustmanuallyadjustthesignalpositionuntilthedirectcouplingislocatedentirelyinthewindow(seeFigure1).Figure1:Typicalwaveformshapewithantennapositionedoverrebar.Thesignalissetupsothatthedirectcouplingandthepeakamplitudesarewellwithintheboundariesofthesamplingwindow.波形图混凝土钢筋检测剖面桥梁检测处理对话框钢筋位置确定方法混凝土钢筋检测解释Figure6:ExampleofprocesseddatashowninInteractiveInterpretationwindow.Thetophalfshowingthepicksontopofthedataisthedatapane.Thebottomhalfshowingthepickdepthsisthedepthpane.混凝土钢筋检测成果ConcreteConditionAssessmentofBridgeDecksusingtheModel5100Antenna桥梁探测原始资料偏移对比ConcreteConditionAssessmentonBridgeDecksUsingHornAntennas双通道空气耦合天线信号调整铁板文件对话框标定文件Figure54:Typicalprocessedhornantennametalplatecalibrationfile.Notethescansareorganizedinorderofincreasingheights.资料解释Figure86:Contourmapofrebarreflectionamplitudes.Theblackareassuperimposedonthecontourmaprepresentareasverifiedtobedeterioratedbasedonhammersoundingaftertheasphaltoverlaywasremoved.Surfer平面图