基于低应变反射波和超声波透射法的公路基桩完整性检测技术研究与应用

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中图分类号：TU473.16 文献标志码：A 文章编号：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

桥梁是公路工程的重要组成部分，尤其是对于穿过山岭、跨越江河的公路，桥梁工程的占比更高。（剩余6811字）