鋼管初應(yīng)力對鋼管混凝土構(gòu)件承載力影響的試驗(yàn)研究

1、分類號TU37密級Y856582單位代碼10618學(xué)號03260107重慶交通大學(xué)碩士學(xué)位論文論文題目：翅蟹翅應(yīng)力融塑笪遏趟麴性丞載力鬟墮鯉試墜塹褒研究生姓名：熟塞導(dǎo)師姓名、職稱：周盔邀教授申請學(xué)位級別：砸士專業(yè)名稱：插粱與隧道王程一一一論文答辯日期：gQ鰻生4且8亙學(xué)位授予單位：重慶童通太堂答辯委員會主席：匿出鹽熬援!擅昱評閱人：匿出撻熬援!譴昱縫重蘭數(shù)援2006年4月8日HAbstractWithconstantlydevelopm

2、entandimprovementofConcreteFilledSteelTube’s(cFST)theories，theCFSTstructureshavebeenwidespreadappliedinhigh—risebuildingsandlargespanarchbridgesTheconstructionmethods。suchasnonbracketsuspending，swivelemcfion，aswellaslitt

3、lesupportsettings，wereadoptedbymostofCFSTarchbridgesduringerectingsteeltubesegmentsBeforecombiningsteeltubeandCOreCOncreteintocombinedsection。thehoUowsteelmbeofarchribwillbecardedthedeadloadbOthselfweightandCOreconcretew

4、eightwhichwillleadtheinitialstressofsteeltubetobegeneratedFurthermoretheinitialg【ressofsteeltubewasusuallyratherlargeHowever，theinitialstressmusthaveagreateffectonthecharacteristicforCFSTarchbridgesTherefore，itisasenseof

5、studytobeingdiscussedthecharacteristiceffectsonCFSTarchbridgeinthisthesis。1Theexperimentsabout8CFSTmemberswithandwithoutinitialstreSSinsteeltubehavebeencarriedoutTheexperimentalresultswereingoodagreementwiththeoryones；2T

6、缸eanalyricalmodelswhichconsideredinitialbql“CSSinthesteelt11beoftheCFSTcolumnsandtheloaddeformationrelationshipcurvesaboutaxialandeccentricityweredevelopedbyafiniteelementprogrammingANSYSThecalculationcomparisonshavebeen

7、madewithreferences’resultsTheregularityofmechanicscharactersandeffectsofloadbearingcapacityforCFSTcolumnswithinitialstresswerediscussed；3Based011theFEAmodel，theloadbearingcapacityeffectsonslendemessratiosectionalsteelrat

8、io，strengthofthesteelandtheconcrete，loadeccentricityratioaswellasinitialstresscoefficienta北Comprehensivelydiscussed；4Accordingtothespecificationandsomereferences，SOHICcalculationsandcomparisonofCFSTloadbearingcapacitywer

9、eperformedAtlasts眥esimplifiedformulas011loadbearingcapaci留ofCFSTcolumnswithinitialstressweresuggestedKeywords：ConcreteFilledSteelTube(CFST)：Initialstress；Loadbearingcapacity；RelationshipofSUt屯SSandstrain；Initialstresscoe