梁橋結(jié)構(gòu)損傷識別的曲率模態(tài)技術(shù).pdf

1、武漢理工大學(xué)碩士學(xué)位論文梁橋結(jié)構(gòu)損傷識別的曲率模態(tài)技術(shù)姓名：鄒曉軍申請學(xué)位級別：碩士專業(yè)：結(jié)構(gòu)工程指導(dǎo)教師：張開銀2003.5.1亟堡壟三奎堂堡主堂垡堡壅——AbstractSincethe50softhiscentury，peoplehaverealizedtheimportanceofhealthmonitoringforbridgesManybridgeshavebeeninstalledwithmonitoringsystemp

2、resentlyAprimaryobjectiveoflongspanbridgehealthmonitoringistoobtaintheinformationonbridgeconditionthroughonlinemonitoringofthestructuralperformanceInthispaper，afterabriefoverviewofthedevelopmentofbridgehealthmonitoring，t

3、heconnotationofbridgehealthmonitoringispointedoutinanextendedsenseThepresentbridgehealthmonitoringsystemshavenotthecapacifytodetectthedamageinbridgesFurtherstudyisneededastohowtodesignaneffectiveautomaticdamagedetections

4、ystemsforstructuraldamageidentificationAutomaticdamagedetectionbecomesacoretechniqueofbridgehealthmonitoringsystems，whichattractstheattentionofmanyresearchersActualityofdamageidentificationforstructuresiSexpatiatedandcom

5、mentsaremadeonthemethodsofthemThesemethodsincludenaturalfrequency，Strainmodalshape，COMAC，flexibilitymatrix，waveletanalysis，geneticalgorithmsetcConsideringthatCurvatureModeCanidentificatethedamageofstructuresandcanshowthe

6、changeoflocalstateofbridges，anditcarlbeusedtoinspectthelocationanddegreeofdamageThetheoreticalbasiswasdevelopedemphaticallyforthecurvaturemodalanalysisandthecurvaturemodepropertiesinthepaperTherelationbetweenthecurvature

7、modeandthestrainmodeforstructuressuchasbridgessubjectedtobendingandvibrationwasdiscussedThecurvaturemodeisrathersensitivetothelocalchangeofstructuresAndtheresultsshowthatthecurvaturemodewillbemoreconvenientlyusedthanthes

8、trainmodeInthispaper(Chapter4)，curvaturemodemethodisadoptedtothecalculationofdamageimitationtooneprestressedconcretecontinuousbeambridgeThreeconditionsisdividedtocarryoutanalysisandstudyandcomparethediagnoseabilityaboutt