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1、沈陽建筑大學(xué)碩士學(xué)位論文大跨徑預(yù)應(yīng)力混凝土梁式橋施工期船撞風(fēng)險(xiǎn)分析姓名：李亮申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：橋梁與隧道工程指導(dǎo)教師：包龍生201101碩士研究生學(xué)位論文AbstractIIIAbstractWithincreasingnumberofbridgescrossinginlwaterwaysstraitgulfsrapiddevelopmentofvesseltransptationthecollisionaccidentsbetw

2、eenvesselsbridgesoccurredfrequentlywhichcausedbridgesdamagecollapse.Riskaccidentsofshipcollisionwithbridgesmayinvolvemanyuncertainfacts.Howtoassessthemreducetheirfrequeciestoanacceptablelevelarethemaintopicofthedissertat

3、ion.Thisdissertationfocusesontheshipcollisionriskanalysisoflargespanprestressedconcretegirderbridgeswhichincludesthefollowingaspects：1.Thepaperreviewedsummarizedtheresearchesprogressonshipagainstbridgesproblemsbothathome

4、abroadincludingtheresearchesonthemechanicalshipagainstbridgesmodelstheriskassessmentoftheshipagainstbridges(includingtheshipagainstbridgesprobabilityconsequencetheriskprineiples)researchesontheshipagainstbridgesaccidents

5、thedesignmethodsofpreventingshipcollisionsonbridgesresearchesontheshipcollisionsonbridges.2.Thetheeticalskeletoninthisparttheriskconceptionitsanalysisprinciplearediscussed.Thedefinitionofrisktheionprincipleofriskanalysis

6、methodsareputfwardthedefinitionoftheshipcollisionriskoflargespanprestressedconcretegirderbridgesisgiventhetheeticalskeletonoftheshipcollisionriskanalysisfbridgesisbuilt.3.BasedontheMATLABlanguagebasicdataofthepresentsamp

7、le4chiefinfluentialfactsastheinputcoefficientsuchasthebridgespanthewaterflowratetheinclineanglebetweenwaterflowdireetionthedirectionnmaltobridgeaxisthecurveinthecoursenearthebridgeareawiththeshipagainstbridgeprobabilitya

8、stheoutputcoefficienttheintelligentjudgingsystemoftheshipagainstbridgesprobabilityreflectingtheinfluenceoftheaboveinputparametersisobtainedaftertraining.4.Thepaperrecomdedtheshipcollisionprobabilisticreliabilityanalysisb

9、asedonANSYSfiniteelement.ThetraditionalmethodofsolvingthestructuralreliabilityhasmanyshtagesothispaperuseingthefiniteelementsoftwareANSYStheMonteCarlonumericalsimulation(MF?)toanalyzethestructuralreliability.5.Theriskcri

10、teriaofvesselbridgeimpactarestudied.Basedoncomparingresearchingrelevantnmsaboutvesselbridgeimpactrisklevelsofvariousindustrynaturaldisastersexistingaccidentsinourcountryrecommendedthecollapseoftheshipcollisionriskaccepta

11、ncecriteriaassessmentcriteria.Thefrequencyofthebridgecollapseishighriskwhenitisgreaterthan310?3510~10??ismediumrisk5710~10??islowrisklessthan710?isthenegligiblerisk.recommendedapreliminaryrisktreatmentmeasures.6.Projects

12、shipcollisionriskanalysisofBeishanBridge.UsingtheshipcollisionriskassessmenttheyofprestressedconcretegirderspanbridgeanalyzedtheshipcollisionriskanalysisoftheBeishanBridge.Finallythefullpaperofthewkdonebythestudyaresumma

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