充气膜的找形及荷载分析

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1、上海交通大学硕士学位论文充气膜的找形及荷载分析姓名：陈斌申请学位级别：硕士专业：结构工程指导教师：龚景海20070228FORMFINDINGANDSTATICANALYSISFORPNEUMATICMEMBRANEABSTRACTWiththeprogressofthepneumaticmembrane’stechnologyandtheuseofnewmembranematerial—ETFE，peoplehaveinterestsinthepneumaticmembranestructureagain.Thepneumaticmembranegraduallyhasawideappli

2、cationinactualprojects.Nowadaysthesoftwareprofessionallyforthepneumaticmembraneanalysisanddesignisrare.Meanwhilepeople’scomprehensionandthemethodsofresearchanddesignforpneumaticmembranestructuresareoutdated,theseallpreventthedevelopmentoftheupdatedpneumaticmembrane.Basedonthese,thethesiscompilesthe

3、programforformfindingandstaticanalysisandcarriesoutthewholeprocessanalysisforthepneumaticmembraneandgetssomevaluableconclusionsandrulesforpneumaticmembranestructures.Throughtheseresearches,authorwishestoinstructtheactualprojectsdesign.Thethesisfirstanalyzesthemostimportantfactor—airpressureduringth

4、eprocessofformfindingandcomparethedifferencebetweenthepneumaticmembraneandtensionedmembrane.Thenamethodofformfindingforthepneumaticmembraneisproposed.Accordingtothismethod,aprogramiscompiledtosimulatetheprocessofformfinding.Threekindsofequilibriumsurfaceareintroducedandanalyzed.Thethesisdetailedlya

5、nalyzessomeparametersunderinitialformandgetstherelationshipbetweeninitialshapeandairpressureandprestressingforceandanalyzesthecable’sfunctionandimportanceduringtheformfindingprocess.Thethesisanalyzestheimportanceofsnowloadduringthestaticanalysisforpneumaticmembranestructuresandhowtosolvethelocalsno

6、waccumulation.Lawswhichdescribetherelationshipbetweenairpressureandloadarestudiedandtheprogramiscompiledtosimulatetheouterloadactions.Thestaticanalysisforpneumaticmembranestructuresiscarriedoutcompletelyandemphasizesoninflatedarch.Thethesisdetailedlyanalyzessomeparametersundersnowloadandwindloadand

7、getstherelationshipbetweenstructure’sstability,displacementandairpressure,radius,span.Thethesisconcludesthiskindofstructure’sloadcharacteristicsandgivessomeadvicefordesign.KEYWORDS:pneumaticmembrane,airpres