平面鋁合金框架結構的二階效應分析.pdf

1、同濟大學土木工程學院碩士學位論文平面鋁合金框架結構的二階效應分析姓名：倪月申請學位級別：碩士專業(yè)：結構工程指導教師：張其林20060301AbstractAbstractThestructurenonlinearityisdividedintothegeometrynonlinearityandthematerialnonlinearityThestructuregeometrynonlinearityisdepictedthestru

2、cturedistortioncausesthepositionchangeofstructureoriginalloadtoproduceresultingintheattachmentactioneffect，whichoftencallsSecondOrderEffectItmainlydividesintotheP一6effectandtheP—Aeffectregardingtheframeconstructiongeomet

3、rynonlinearityTheSO—calledP一6effectreferstoadditiveeffectproducedbyrelativedisplacementofthememberoppositetothechordwireTheSO—calledP—Aeffectreferstoadditiveeffectproducedbytherelativelylateraldisplacementofthememberbegi

4、nningsandendsThelongtimeover，theruleresearchofSecondOrderEffectofframeconstructionhasmainlyinvolvedtwoaspects：oneisattemptingtoseekonemethodtopreciselyanalysizetherealstresssituationofframeconstruction；theotheriSseekingo

5、nekindofmorepracticalmethodtosuittheengineeringdesignRegardingthealuminumalloyframeconstruction，wemustconsideritssecondordereffectbeforecarryingonthepreciseanalysisandthedesign，whileprecisesecondorderanalysisusuallyneeds

6、iterativeprocess，thereforeitiscomplexandtimeconsumingWhenitdoesnotneedpreciselytosolve，usingthesimplifiedprincipletOconsiderSecondOrderEffectaccordingtotheapproximatewayismoreconvenientInordertosummarizetheSecondOrderAna

7、lysismethodofthealuminumalloyflameconstructionaswellassimplifythetheoryofSecondOrderAnalysis，SOthatprovidingthemorereliablereferenceforthealuminumalloyframeconstruction’Ssimplifiedformula，thisarticlemainlyelaboratedeachs

8、econdorderanalysismethodthatmayapplytotherectangularrigidframeaswellasthesimplificationtheoryoftheSecondOrderAnalysismethod，what’Smore，inordertOconfirmtheprecisionbymeansofthesimplifiedSecondOrderAnalysismethodregardingt