輕鋼框架結(jié)構(gòu)的空間分析及優(yōu)化設(shè)計(jì).pdf

1、97G$08a＆～——莘束文通又學(xué)碩士學(xué)位論文輕鋼框架結(jié)構(gòu)的空間分析及優(yōu)化設(shè)計(jì)學(xué)位申請人：學(xué)科專業(yè)：指導(dǎo)教師=答辯委員會主席：勇考≤譚勇結(jié)構(gòu)工程捺海燕教授答辯日期。如5第‘目竹目AbstraetTHEANALYSlZE0FLIGHTWEIGHTSP：ATIALSTEELFRAMEANDOPTlMALDESIDNABSTRACTWiththedevelopmentofcomputertechnologythecalculatingmode

2、lofstructurehaschangedfromplanetospatialBaseonagreatmanyliterature，thispaperanalyzesandsummarizesthegeometricnonlinearanalysismethodandoptimaldesignoflightweightspatialsteelframe礎(chǔ)spaperanalyzestheultimatestrengthofsteelb

3、eamcolumnandderivestheaccurateyieldsurfaceformulationofsteelbeamcolumnComparedthelinearandthenondineardesignformulationwiththedateofexperimentIconsiderthatthenonlineardesignformulationcancalculatetherealultimateloadofste

4、elbeamcolumnBasedOHthetheoryofcontinuonsmediummechanicsgeometricnonlinearanalysisFEMmodeloflightweightspatialsteelframewasestablishedconsideringshearingdeformationeffectaecordingt0stabilityinterpolationfunctionMaking11Se

5、ofupdatedlagrangianformulationstartingfromincrementvirtualworkequilibriumequationtheexplicitexpressesofbeamcolumnelements’stiffnessmatrixforspatialsteelconstructionframingwasd耐vedThispaperalsoderivesthecoordinatetransfor

6、mationmatrixesonspecialbeamelementandintroducesthesolutionofnonlinearequationThispaperdiscussessomeprimaryfactorwhengeneliealgorithmappliedonoptimaldesignforexample，themathematicalmodel，theconstrainedproblem，theinitialpo

7、pulationandthecontrolsparametersofgeneticalgorithm；andthispaperdiscusseshowtoconfirmtheappropriatepopulationsizeofgeneticalgorithmBecausesimplegeneticalgorithmisshortofthelocalsearchthispaperimprovesthesimplegeneticalgor

8、ithmandaccomplishesoptimalprogramofthelightweightspatialsteelframebasedontheadaptivegeneticalgorithmandVCTheresultshowsthattheadaptivegeneticalgorithmscangreatlyimproveconvergencerateKeyWords：geneticalgodthTnlightweights