基于静力响应的桥梁结构损伤识别研究

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1、武汉理工大学硕士学位论文基于静力响应的桥梁结构损伤识别研究姓名：张家弟申请学位级别：硕士专业：结构工程指导教师：黄斌20060401武汉理工大学硕士学位论文AbstractBridgesatethehingesoftrafficsystem，playingallimportantroleinthenationaleconomicandsociety．Alongwiththeextensionofthebridgeservicelife，internationalcommunityincreasingly

2、paysattentiontothesafetyoftheexitingbridge．Nowthedamageidentificationofbridgesisbecomingtherealmwhichneedtoenhanceurgently,whichisalsoanurgentandimportanttask．Damageidentificationofbridgestructuresisaquestionwhichourbridgeengineeringurgentlyawaitstobesol

3、ved．bthispaper,amethodofdamageidentificationofbridgestructuresbasedonstaticresponseispresented．Accordingtotheruleofdamageidentificationofbridgestructures．wedoaresearchandgetaniceresultonthehealthyanddegreeofdamageofbridgestmcturesandtheeffectofmodalmista

4、kescaUSebysomereasons，Themainachievementsatebrieflymentionedasfollows：1．Hasdonesomerescar-chonthesimpleinductionandthesummarytodamageidentificationmethodsofdomesticandforeignbridgesstnlcture，andhasappraisedeachkindofbridgedamageidentificationmethodsadvan

5、tages，obtainsthatcarryingonthedamageidentificationtobridgesU'ucturesusingthemethodofstaticresponseisthecurrenturgentmatter．2．DetaUintroducethebasicprinciplecarryingoildamageidentificationtothebridgest[ncturesbasedonthestaticrespofise，andobtainedtheqmteid

6、ealidentificationeffectthroughthevaluecomputation．3．Consideringitisdifficulttogettheangulardisplacement，alsotheprecisionisnotenough，whileusingthemethodinthedamageidentificationprocesshascarriedonshrinksstepprocessingfromthestructureinitialmodelrigidityma

7、trix．Andnowonlyneedstogetthedeflectionvalueofeachpitchpointthenitispossibletocalculatetheidentificationresult，obtainedamoreidealresultthrou曲thevaluecomputation．4．Basedouthedamageidentificationtheoryonthestaticresponsetothebridgestructures，analyzetheinflu

8、encetotheidentificationresultcausedbymodelerrorandU武汉理工大学硕士学位论文thesurveynoiseaffect，thevaluecalculateexampleconfirmedthismethodcallgettheeffcctiveidentificationresultaftheconsiderationofmodelcTrorandinthesurveynoisesituati