空客A320總裝線機庫廠房主桁架下弦節(jié)點受力性能有限元分析與模型試驗.pdf

1、天津大學碩士學位論文空客A320總裝線機庫廠房主桁架下弦節(jié)點受力性能有限元分析與模型試驗姓名：安培君申請學位級別：碩士專業(yè)：結構工程指導教師：李忠獻20090501ABSTRACTTheAirbus320BuildingsislocatedinBinhaiDistrictTianjinItcomprisesFinalFlightHangarBuilding，DynamicCenterSprayPaintHangarBuilding，Po

2、stassemblyFlightHangarBuildingandServiceCenterThedimensionofthePostassemblyFlightHangarBuildingis9692m，andtheelevationofthelowerchordis15mTheprimarysecondarytrussformatmadeupofprimarytrussandplanarsecondarytrussisemploye

3、dintheroofstructureofthePostassemblyFlightHangarBuildingItisthefirstpracticalapplicationofsuchtrussformatinChinaTheprimarytrussismadeupoftrianglesteeltubetrusswithaheightof7mandawidthof7mItsspanis96mandthedistancebetween

4、tWOofthemis26mDuetothelargespanandcomplexstressoftheprimarytruss，inthejointconnection，highstrengthboltwasusedforconnectingthesteeltubewithgussetplateInordertohaveacomprehensiveknowledgeaboutthemechanicalbehaviorofthejoin

5、tsandestimatetheirsafetythefiniteelementmethodanalysisandmodeltestofthelowerchordjointsintheprimarytrusswereallconductedFirstlythesolidmodelofthejointswerebuiltupusingafiniteelementmethod(FEM)analysissoftware—ANSYSTherea

6、fterthejointsmechanicalperformanceunderdesignloadisanalyzedthestressdistributioncharacteristicswereconcludedandthestressconcentrationregionswerefoundSecondlythejointundertheworstcaseloadwasselectedtobuildupasalemodel，ata

7、ratioof1／3Themechanicalperformancetestofthescalemodelunder15timesdesignloadwasconductedTheresultsobtainedfromtheFEManalysisandthemodeltestcoincidedverywell，whichshowedthattheFEManalysisiSreliableTheresultsgetfromboththeF

8、EManalysisandthemodeltestdemons訂atethatthejoinstillworksinelasticitysituationunder15timesofdesignloadTherefore，thesafetyofthejointswasprovedFinallytheweaklinkageinthejointWaspointedoutbasingontheFEManalysisandthemodeltes

9、tSomesuggestionsaboutthedesignandconstructionofsuchjointsWelealsoproposedTheresearchinthisthesiscallbeusedasatheoreticalorexperimentalreferencefortheapplicationandpromotionofthistypeofjointsKEYWORDS：steelstructure，joint，