基于可靠度的鋼筋混凝土簡支梁橋損傷評估.pdf

1、西南交通大學碩士學位論文基于可靠度的鋼筋混凝土簡支梁橋損傷評估姓名：李軍歌申請學位級別：碩士專業(yè)：橋梁與隧道工程指導(dǎo)教師：李喬20060301西南交通大學碩士研究生學位論文第1I頁AbstractDamageideⅡtification，reliabilityassessmentandremainingscrViceIifepredicationareurgentproblemstobesolVedintheengineeingfiel

2、dSimplysupporIedreinforcedconcretebridgesaretypicanyusedinthemoderateandsmallspansDuringtheiroperatioⅡ，suchfactorsasmaterialdegradation，reinforcingbarcoHosion，beingfrequeⅡtlyloadedoreVenoVerloaded，inadditiontonaturaldisa

3、sterandtrafficalaccident，wil工causethebridgestobedamagedorlocallyfailedBasedonthemodelsofresistanceattenuationandloading，lhelimitslateequationsOfcarryiⅡgcapac“yofRCbridgesareestablishediⅡthisdissertatioⅡ，thcnthetimeva“abl

4、creliabilityisanalyzcdIⅡthisway，thcdyⅡamicfeljabilitytheoryisrelatedtOthedamageassess皿entUsingpreViousresearchconclusionsasreferences，thefactorsinfluenciⅡgresisIanceattenuatiOnarecoⅡsideredrespcctiVelyinthisdisscrtation，

5、suchasthetimevariabilityofthcstreⅡgthofconcrete，reinforciⅡgbarsandthecrosssectjonofreinforcingbarsaⅡdthedeteriorationofbondbehaViorbetweenthesteelandthecoⅡcreteOnthebasisofthemodelsrelatedtotheforegoingfactors，thestrucIu

6、raIresistancemodelisformedAnimponantaspectistheeffectofreinforcecorrosionontheresistancedeteriorationTwotypesofcoHosionareconsidered，iegeneralcorrosionandlocalizedcoTrosionLoadisoneottbemainfactorsinfluencingbridges，inc】

7、udingdead10adandvehicleload，whichisconsideredIoberandomvariablesAccordingIoinvesligationdatahomhomeandabroadTeseafch，thestochasticmodelsofdeadjoadandvehicle10adareintroducedinthisthesisThedeadload’smodelsubmitstonormaldi

8、s“ibutionandthevbehicleload’sunnofmalwbichisdeVidedintogeneraltrafficanddensetrafficstatesAftercompletingresislanceandloadmodels，theIimitstateequationsofcarryingcapac“yofbridgesdamaged，whicharealsocalledfunctionequalions