pvc管约束钢筋混凝土柱轴压性能试验研究

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1、万方数据ExperimentalStudyonAxialCompressCapacityofPVCPipeConfinedReinforcedConcreteCompositeColumnsABSTRACTPVCpipeconfinedreinforcedconcretecompositecolumnsisanewkindofcomposites廿ucture，andenhancethecapacityofreinforcedconcretecolumnofcompressive，effectivelyreducethecrosssectio

2、nareaofthereinforcedconcretecolunm，improvementoflargecrosssectionofreinforcedconcretestructures，themajorfaults，andtoreducethecomplexreinforcedconcretecolumnformworkfabricationandinstallationprocess，constructionefficiencyandcostsavings，andgivefullplaytothePVCpipematerialouts

3、tandingsocial，economicandenvironmentalbenefits，ithasabroadmarketandapplicationprospect．Thisarticleisonthebasisofexperiment，toexperimentalstudyonaxialcompresscapacityofPVCpipeconfinedreinforcedconcretecompositecolumns．Theexperimentwitlllongitudinalreinforcementratio，stirrupr

4、einforcementratio，internalreinforcementform(centralizedreinforcementanddistributedreinforcement)asthemainparameters，suchasthedifferentparameterchangeonthePVCpipeconstraintstheinfluenceofthecompressivebearingcapacityofreinforcedconcretecolumn．27PVCtubeintestdesignconstraints

5、ofconcretespectmens，testthemonotonousstaticloadtestmethod,llS迦displacementloadingcontrolmethod．Inthispaper,westudythePVCpipeconfinedreinforcedconcretecompositecolumnsofcrackpropagationprocessandthefailurepattern，studythePVCpipeconfinedconcretecolumncompressiondeformationlaw

6、．ResultsshowthatthePVCpipeconcretecolumnhassimilartoordinaryconcretecolumncompressionperformance，mechanicalprocessalsowork也roughfourstages：stageworkbeforePVCpipecracking，PVCducttapecrackcoreconcreteflexibleworkingstage，PVCducttapeandcoreconcretecrackselastic·plasticstagewor

7、k，reachthelimitloadafterfailurestage．ColumnoftheyieldsignisspiralstirrupscrushingofII万方数据Thispaperstudiesthelongitudinalreinforcementratio，stirrupreinforcementratio，internalreinforcementforms(suchascentralizedreinforcementanddistributedreinforcement)ofPVCpipeconfinedreinfor

8、cedconcretecompositecolumnsofthecompressivebearingcapacityofreinforcedconcretecolu