1、天津大學碩士學位論文新型預應力鋼結構樓梯結構性能分析研究姓名：賈莉申請學位級別：碩士專業(yè)：結構工程指導教師：劉杰陳志華20061201ABSTRACTWimthedevelopmentofSteelstmctIlrc，Prestressedsteels仇lctIlreISpopularizedwidelyTherearemanykindsofsteelstairsuch嬲steel—cocklestairs，steel—ellipses

2、tairsFivenewPrestressessteelstairswereinstalledinateachbuildinginaUniversitywhichistheprojectbackgroundofthispaperThehistoryandthetrendofdevelopmentofPrestressedSteelS仇lcturehavebeenpresentedThefeatureandtypesofPrestress

3、edSteelStructureisintroducedAndthemethodofputtingthepre—stressonthes_tnlctllreisconcludedAlltheperformanceguidelineandtheconstructiontechniquesofsteelhigh—strengthbarisdescribedSomeprojectsofthesteelhigh—strengthbararesp

4、ecializedAndpresentstateofthestudyontheDynamicTestisanalyzedThenthebackgroundandthemainworkofthispaperareputforward111epre—stressedsteelbarhastwoactionsinthisnewPre—stressedsteelstairs：thefirstistobeapre—stressedelemento

5、fthisstairs，providingpresses；thesecondistObesupportsystemofpoint—supportedcurtainwallsneservicebehaviorofsteelbarcooperatewiththeglasscurtainwallWaScalculatedbyANSYS，thesafetyCanbeguaranteed111epullingconstructionplanoft

6、heprestressedsteelbarWaSlistedDuetotwOdifferentformsofjointwithmajorbuilding，PrestressedsteelstairsaledividedintotwotypesNo1andNo2TwofiniteelementmodelsaleestablishedandstudiedonstaticanddynamicanalysisofthestairsInthest

7、aticanalyticprocess，therearesixoperatingmodesFirstlythestaticresponseofNo1andNo2steelstairsareanalyzedinthefnstandsecondoperatingmodesThereactionsandmemberforceswiththeforeandafterprestressapplicationarecomparedTheconclu

8、sionthatprestressapplicationhaSdifferentinfluencesonthetwojointformssteelstairsisdrawnSecondlyinthethirdandfourthoperatingmodes，thedisplacementsofthecolumntopandbetweenthestoriesarecomparedwiththatofcoderequirementsneinf

9、luenceofprestressonthesteelstairperformanceconformstOcoderequirementsBecausethesteelstairsisontheoutsideofthemajors眥tllre，theinfluenceofseasonaltemperaturechangesneedconsidering111econclusionthatthetemperatureloadshavean