薄壁鋼梁彎扭屈曲理論的分析和探討.pdf

1、哈爾濱工程大學(xué)碩士學(xué)位論文薄壁鋼梁彎扭屈曲理論的分析和探討姓名：陳力攀申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：結(jié)構(gòu)工程指導(dǎo)教師：陳樹華20061201哈爾濱工程大學(xué)碩士學(xué)位論文AbstractBymeansoftheoreticanalysisanddigitalimitation，allinvestigationabouttheflexural—torsionalbucklingofthinwalledsteelbeamis1]1acleinthis

2、paperAcomprehensiveinvestigation011thetwodifferentflexuraltorsionalbucklingofthinwalledsteelbeamexistingindomesticresearchthesedaysismadeOnthebaseofthegeneraltheoryofthinwalleAmembers，wededuceallgWcriticalmomentformulaof

3、steelbeamundertransver∞loadSwhichpasstheshearcenterandparceltothemainaxisBymeal塔OfANSYSsoftware，webuildtheshellmodelandimitatetheflexurultorsionalbucklingofthinwalledsteelbeamWecomputethecriticalmomentofsteelbeamindiffer

4、entspananddifferentsiteandformofloadThencomparetheresultoftheoreticanalysisanddigitalimitationSomesuggestionaregiventothedesignofstabilityofsteelbeamThenumerationofparametercl，c2，c3shouldbeadjustedinengineeringOnthebaseo

5、fthegeneraltheoryofthinwalledmembers，wededuceacriticalmomentformulaofsteelbeamundertrarLsverseloadswhichdeviatetheshearcenterbutparalleltothemainaxisAvalidationiscarriedbytheANSYSsofLware，itindicatesthatthetheoreticresul

6、tissimilartothedigitalresultThentheformulaiscomparedwiththesimilaronegivenby(Technicalcodeofcoldformedthinwalledsteelstr咖》(GB50018—2002)and《specificationfortheDesignofColdFormedSteelStructural》(Aast96)ItindicatesthatTech