焊接鋼桁架節(jié)點板的極限強度

1、西安建筑科技大學碩士學位論文焊接鋼桁架節(jié)點板的極限強度姓名：李守輝申請學位級別：碩士專業(yè)：結構工程指導教師：顧強2000.3.1UltimateStrengthofSteelWeldedTrussGUSSetPlateSpeciaUity：StructureengineeringGraduate：LiShouhuiAdvisor：ProfGuQiangABSTRACTGussetplatehasbeenwidelyusedinvario

2、ussteelstrueturesasconnectingcomponentThecurrentcodeGBJl788doesn’tgiveclearcalculatingformulas，SOthreemethodsbasedonelasticanalysishavebeentriedtobeemployed：effectivewidthmethod，pseudobeammethod，tearingsurfacemethodButte

3、aringsurfacemethodisbasedonthesecondstrengththeorywhichisusuallyusedforbrittlematerial，itisn’tsuitableforsteeltrussgussetplateasductilematerialInfactgussetplategetsintoelastoplasticworkingstateshortlyafterloading，SOanaly

4、sisofultimatestrengthofgussetplateisimportantinpracticeAfterthederivationofnonlinearfinitemethodprocedure，thedevelopinganddebuggingoftheprogram，systematicstudyhasbeencarriedout011thebehaviorofsteelweldedtrussgussetplateu

5、ndertensileloadIntermsofcalculationresults，thedistributionandvariationofplasticzoneandstress，andthewholefailureprocessofgussetplate，areanalyzed，andthefailuremodeofgussetplateisobtainedAtthesametimeobviousyieldingstephasn

6、’tbeenfoundbeforethefailureofgussetplate，presentingthecharacteristicofbrittlefailureAccordingtotheabovecalculationanalysis，theimprovedtearingsurfacemethodbasedonthefourthstrengththeoryisproposedandtherecommendedformulaby

7、thecodeandtheproposedformulaarecomparedInaddition，thecorrespondingsuggestionsaregivenaccordingtotheequallytransferringofforcefromthewebmembertogussetplate，stressconcentrationintheendofwebmembernoobviousyieldingstepbefore