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ID:36444569
大小:4.43 MB
页数:104页
时间:2019-05-10
《桥梁检测中的数据处理及分析研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
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
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