桥梁检测中的数据处理及分析研究

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1、合肥工业大学硕士学位论文桥梁检测中的数据处理及分析研究姓名：欧阳东申请学位级别：硕士专业：市政工程指导教师：蔡敏;张伟林20030301AbstractWiththecontinuousdevelopmentofbridgeconstruction．functionsandformatsofbridgebecomemorecomplicateddaybyday．Allkindsofabrasionsofbridgeswilibewatchedaftertheyhavebeenusedforyears．Questionssuchaswhetherthesewearingbridgesc

2、ouldstillbeworkingandhowlongcouldtheyworkingarepaidmoreattention．Therefore，detectionandinspectionofbridgeshavebecomeoneimportantguaranteethatensuressafetymaintenanceandnormaluseofit．So．howtoperformqualitydetectionandsafetyinspectionwithbridgeshasbecomearesearchhotshotofforeignacademiaandenginee

3、ring．First，thispaperintroducedseveraldomesticandforeignbreakdownaccidentsofbridge，theimportanceandnecessityofbridgedetectionjsthenexplained．Bridgedetectisanewtechnique，manyknowledgesuchasmechanics，structure，electronics，materialandcomputerareinvolved．Thispaperintroducedtheactualitiesanddevelopme

4、ntsofdomesticandforeignbridgedetectresearch．Itisstillanewresearchstartinourcountry：therearestillmanyproblemstobesolved．Theosci1lationcharacteristicofmoderncable—stayedbridge，theabrasionmechanicsparametersmeasurementandsomenormaltechniquesofbridgedetectareinvolvedinthispaper；theOSCilfatingfreque

5、ncytechniqueofcable’smechanicsdetectionisespeciallyintroduced，atthesametime，itsmeritsanddisadvantagesarediscussed，somemodificationsmeasuresareputforward．Following，somedetectinginstruments，suchasresistancestraingauge，strainindicatorandendoscope，areintroduced．Thecoreinstrument“sensor”isintroduced

6、withemphases．Sensorisaninstrumentthatcandistillusefulinformation(normalIFcoulometerlfromquantumdetected：theinformationdistilledisoftentransformedintocoulometerthatcanbetransferredanddealtwitheasier．Sensorsoftenusedinbridgedetectingareoffsetsensor，speedsensorandaccelerationtransducer，thelastonei

7、sfrequentlyused．Waveformdetectedfromitischangedintooffsetwaveformthroughtwointegraltransformations，andthenistransformedintospectrumgraphoritistransformedintospectrumgraphdirectly．Oscillatingfrequencyofstructurecanhegotfromthespect