門式剛架梁基于時變抗力的動態(tài)可靠度研究.pdf

1、沈陽建筑大學(xué)碩士學(xué)位論文門式剛架梁基于時變抗力的動態(tài)可靠度研究姓名：張黎黎申請學(xué)位級別：碩士專業(yè)：結(jié)構(gòu)工程指導(dǎo)教師：劉明張延年201103碩士研究生學(xué)位論文AbstractIIIAbstractWiththelargenumberofsteelbuildingsputintooperation，withtheincreasingservicelifeofengineeringstructures，Thebasisofthereliabi

2、lityofcivilengineeringfacilitiesHasbecomeawidespreadconcerninthefieldofcivilengineeringstructuresthefefrontofimptantresearchtopic.EspeciallyinrecentyearsinseveralmajsnowdisastersPtalframestructureshaveameseriousdamage.Du

3、ringusingafteryearsofengineeringstructuressubjectedtovariousloadsbytheexternalenvironmentagainstvariouscrosivemediaPtalframestructureshavedifferentdegreesofdamagedefect.Peoplenaturallyconcernedaboutthecurrentstateofthese

4、structuresfuturestructuralreliability.Thesafetyofthestructuredependsontheresistanceofstructuralmembersthereferesistanceofstructuralelementsgraduallyfmedstructuralreliabilityofoneofthemostimptantstudy.Topredictthestructur

5、eoftheresistancelevelofafewyearslatermodelofresistancemustbeestablishedevaluationchangeovertime.Whentheanalysisbytheparametersresistancechangesfurtherconsiderationoftheuncertaintycomponentresistanceestablishservicecompon

6、entattenuationmodelofresistancehasopenedthedotoresearchwiththeptalframestructureinuse.Fthetimevaryingresistancemoststudiesofreinfcedconcretestructuresbutcrosiveenvironmentarecommittedtothestudyspecificallyfthesteel.Thest

7、eelmembersftheatmosphericenvironmentoftimevaryingresistancealsointhelevelofqualitativeanalysisalmostnoquantitativeconclusionsoftheresearchpresented.Consideringtheenvironmenttheroleofagingotherfactscoupledstudyofthegenera

8、latmosphereacidrainenvironmentmarineenvironmentPtalframestructurebeammaterialpropertiesovertimedegenerationdamagemechanismofthetimeMaintasksareasfollows:Analysisofinfluencingfactsthatatmosphericcrosiontheacteristicsofthe

9、climatestation.ResearchInstituteofthemetalcrosionofsteelbasedontheexperimentalresultsatmosphericcrosionofdifferentenvironmentsconsiderthecomprehensiveclimatestationsthecrosionprotectionacteristicscalculatedfdifferentatmo

10、sphericconditionsrepresentativeoffiveareasofQ235steelcrosiondepthcrosionrate.Statisticsofthe16kindsofpracticalengineeringapplicationofmesizeofthebeamptalframeusingtheprinciplesofmathematicsmechanicsthencalculatethefivere

11、gionsofdifferentatmospheredifferentsizesofptalframegirdercrosioninserviceduringtheconsideredtimevaryingflexuralcapacityshearcapacityIntheabovebasedonfurtheranalysisoftheresistancetofadingcomparativeanalysisofexistingptal

12、framegirderresistancedegradationmodelcalculatedbeamoutofthedoframeaftertheexpirationof50yearsinservicetheamountofdecaytheattenuationcoefficient.Bycontrastanalysisofvariousmodelsexponentialmodelobtainedagreeswellwiththeac

13、tual.Timevaryingresistancethe“structuresloadcode“asthebasistocalculatetheregionalrepresentativeof5differentsizesindifferentbeamptalframetimevaryingatmosphericenvironmentreliabilityproposedstructuresbasedonstaticComparati