基于低應(yīng)變反射波和超聲波透射法的公路基樁完整性檢測技術(shù)研究與應(yīng)用
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中圖分類號：TU473.16 文獻(xiàn)標(biāo)志碼：A 文章編號：2095-2945(2025)20-0181-04
Abstract:Theapplicationoflow-strainreflectedwavemethodandultrasonictransmisionmethodinhighwayfoundationpile integritytestingisexplored.Thelow-strainreflectedwavemethodsetsanexcitationpointatthecenterpointofthepiletop, arrangessensorsaroundit，emitselasticwavesfromtheexcitationpointandcapturesthereflectedwaveswiththesensors, calculatesthewavespedandcombinesthereflectionattheendofthepiletojudgetheintegrityofthepilebody;The ultrasonictransmissionmethodtransmitsandreceivesultrasonicwavesthroughtransmitersandreceiversembededinthe acousticmeasuring tube，andcalculatesthespeedofsound,amplitude，etc.todetectandverifypilebodydefects.Takinga highwaybridgefoundationpileasanexample,itwasinitallyjudgedthattherewasasuspecteddefectivereflectionabout13 metersbelowthepiletopbasedonthetimedomaincurveofthelow-strainreflectedwave.Theultrasonictransmisionmethod wastheusedtoverifyit.Theresultsshowedthattheconcreteacousticparameterswereabnomalat12.8to13.2metersaway fromthepiletop.Thetestresultsofthetwomethodswereconsistent.Comprehensiveanalysisandjudgmentofthewaveforms measured by the two methods were used to determine that the pile body had slight defects.
Keywords:low-strainreflectedwave；ultrasonictransmissionmethod;highwayfoundationpile；integritytesting;pilebody testing
橋梁是公路工程的重要組成部分，尤其是對于穿過山嶺、跨越江河的公路，橋梁工程的占比更高。（剩余6811字）