鋼管高強(qiáng)輕集料混凝土短柱軸壓力學(xué)性能試驗(yàn)研究

1、河海大學(xué)碩士學(xué)位論文鋼管高強(qiáng)輕集料混凝土短柱軸壓力學(xué)性能試驗(yàn)研究姓名：王曉亮申請學(xué)位級別：碩士專業(yè)：結(jié)構(gòu)工程指導(dǎo)教師：吉伯海20060301AbstractAbstractHigh—strengthlightweightaggregateconcretefilledsteeltube(HSLACFT)isasortofnewtypeconcretefilledsteeltube(CFST)whichuselightweightaggre

2、gateconcrete(LWAC)insteadofcommonconcreteHSLACFThastheexcellenceofnotonlyhighstrengthlightweightaggregateconcretebutalsoCFST，andovercomesthelimitationsofLWACThediversifiedmechanicalpropertiesandfailuremodeofHSLACFTstubco

3、lumnsunderaxialcompressionareroundlystudiedthroughexperimentalinvestigationAtthesalnctimetheinfluenceofloadingconditionsonthebehavioroflightweightaggregateconcretefilledsteeltubestubcolumnsunderaxialcompressionisdiscusse

4、dTheprimarycontentsareasfollows：133stubcolumnspecimensofhighstrengthlightweightaggregateconcretefilledsteeltubewhichhavediverseparametersarestudiedexperimentallyTheparametersaremeasuredrespectivelyduringtheexperimentalpr

5、ocess，suchasbearingcapacitydeformation，strainandsoonItconcludesthattheelasticratio，strength，andplasticityofconcreteareimprovedmoreorlessundertherestrictionofsteeltube，andconfiningratioisasignificantparametertothemechanic

6、alpropertiesoftheHSLACFTstubcolumns，furthermore，theultimatecapacityofHSLACFTiscloseto血atofthenoFmalconcretefilledsteeltube2Inthispaperthelongitudinalstrain(deformation)curves，horizontaldetbrmation，overalldeformationchara

7、cters，failuremechanismandfailuremodesofthelightweightaggregateconcretefilledsteeltubestubcolumnsunderaxialcompressionareobservedandstudiedTheinvestigationshowedthatnotonlytheconfiningratiobutalsothestrengthoflightweighta

8、ggregateconcreteinfluencethecharacteristicofdeformationandfailuremodesofHSLACFtAndtheshearfailuremaybethefailuremodesasthelightweightaggregateconcretestrengthincreases，3Basedontheexperimentalstudyof27lightweightaggregate

9、concretefilledsteeltube(LACFST)stubcolumnsunderthreetypesofloadingconditions，influenceoftheloadingconditionsonthefailurepatternandmechanicalbehaviorofthespecimensarestudiedThemainexperimentalparametersaredifferentgradcso

10、flightweightconcreteintensityandcrosssectionalsizesofsteeltubesThethreeloadingconditionsare：1Compressive10adactsonconcreteonly；2Steeltubeandconcretesubjectedtocompressiveloadsimultaneously；3Compressiveloadactspassingthro

11、ughtherollerlocatedatthewholecrosssection111etestresultsindicatethatthedeformationbehaviorofthespecimensissubstantiallyinfluencedbytheloadingconditionswhichaffecttheultimatecarryingcapacityalittleWhatevertheloadingcondit