1、大連海事大學博士學位論文懸索橋健康診斷數(shù)值與模型試驗研究姓名：伍雪南申請學位級別：博士專業(yè)：道路與鐵道工程指導教師：孫宗光20090901英文摘要ABSTRACTInrecentdecades，withtheadvancesofscienceandtechnologythequantityandsizeoflargebridgestructurearegrowingrapidlyInthelargespanbridge，thesuspe

2、nsionbridgehasbecomethemainbridgeDuetothecomplexityofthestructureandenvironment，thesuspensionbridgeisliabletoavarietyofhigh—riskdamageanddamageaccumulationintheactualoperation，suchascorrosion，aging，damage，cracksofcompone

3、ntsandSOonSometimesthestructureissubjectedtooverloadingandsuddendisastersIfthesedamagesCannotbedealedwithintime，securityaccidentsandheavylosseswouldberesultedinInthispapersomeimportantissuesaboutthehealthmonitoringanddia

4、gnosisofthesuspensionbridgestructurehavebeenstudyprimarilybasedontheentirebridgemodeltestForhealthmonitoranddiagnosis，a10一meterlongsuspensionbridgetestmodelisdesignedandestablisedBymeansoftestmodel，staticanddynamicproper

5、tiesofthesuspensionbridgemodelhavebeenanalyzedThedamagecasesinvolvedabnormality，whicharepossibletoOCCur，havebeensimulatedBasedonthetesting，thevariationsofstaticanddynamicresponsesandsensitivitycharacteristicsofsuspension

6、bridgeshavebeenstudiedBasedonthefinitemodelwhichhasbeenrevisedbytestresult，thedamagedetectionindicesofsuspensionbridgehavebeenstudiedfrequencychangesratioindex，modalcurvaturedifferenceindexandstaticstraindifferenceindexf

7、orgirderdamage，hangerdamageandcabledamagehavebeenanalysisedFromthesimulationresults，apracticaldamagedetectionmethodologyofsuspensionbridgesisproposedinthisthesisbycombinationusageofthosethreeindicesAccordingtothecharacte

8、risticofthethreeindices，asimpleandeasySenSOrs’placementmethodhasbeenputforwardandgivenadetaileddiscussionofthedisposingofthemeasuringpointswhendetectingstaticstrain、frequencyandmodalcurvatureSensorplacementforstaticstrai

9、nreliesonthestaticstraindistributionwhilemaximumkineticenergycriterionisadoptedtodeterminethesensorlocationsforfrequencyWhenlocatingsensorsofmodalcurvature，successiveadditionapproachisintroducedandMACmarxisusedtoevaluate