pvc管钢筋混凝土柱轴心受压试验研究

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1、万方数据试验显示，PVC内衬混凝土柱内的试件提高效果比PVC外包混凝土柱好。(3)在PVC管直径、纵向钢筋配筋率以及PVC管外侧增加箍筋等不同因素影响下，研究PVC管钢筋混凝土柱轴心受压时的延性及耗能。试验研究表明，PVC管直径一定范围内的增大、纵向钢筋配筋率的增加以及PVC管外侧增加螺旋箍筋，均对PCV管钢筋混凝土柱的延性有一定提高作用。关键词：PVC管钢筋混凝土柱轴心受压极限承载力延性耗能螺旋箍筋约束核心区万方数据PVCTUBEAXIALCOMPRESSIONEXPERJMENTSOFREINFoRCEDCoNCRETECoLUMNABST队CTtubereinf

2、orcedconcretecolumniSbuilt-inpipesinthereinforcedconcretecolumnreinforcedconcretecompositecolumnoroutsourcing，includingatubeconcretewithnormalconcrete，reinforcementcagecastingcompositestructures．PVCtubereinforcedconcretecolumncarlreducetherelativesectionsize，increasethenetconstructionsp

3、ace，atthesametimeimprovethedurabilityperformanceofconcrete，topreventtheerosionofharmfulsubstances，andmaterialpriceislow,Cansavesteel，reducecost．Underthesamebearingcapacity,andsteelreinforcedconcrete(SRC)columnorcompared(CFS)concretefilledsteeltubecolumn，cangreatlyreducesteelconsumption，

4、goodcorrosionresistance，durableperformanceisgood，havegoodcostperformance，alotofadvantagesofsavingconstructioncost．Thisarticleisonthebasisofexperiment，thetubeofnormalsectionofreinforcedconcretecolumnaxialcompressionperformancewereanalyzed，andthedesignofreinforcedconcretecolumnspecimenswi

5、thtubesectioncombination，formofIon#tudinalreinforcementratio，stirrupandstirrupratioasthemainparameters，includingspecimensof15heightis650mmreinforcedconcretecolumnspecimens，usethreesectionsizethecylinderwithadiameterof315mmand250mm，315x250mmsquarecolumn，usepipe．Usingmechanicalpressureexp

6、erimentlastedloadingtestmethod，using0．5mm／minspeedcontrolmethodofloaddisplacement．Byanalyzingtheresultsofdifferentparametersoftheaxialcompressiontestspecimens．Theresearchcontentandresultsareasfollows：(1)theaxialcompressionoftubereinforcedconcretecolumnisresearched，analyzedthetubereinfor

7、cedconcretecolumnfailuremodes，ultimateaxialcompressionbeatingcapacityofaxialcompression，displacementandtheinfluenceofloaddisplacementofarelationship．(2)analysisoflongitudinalreinforcement，spiralstirrupsandsquarestirrups，PVCpipeoutsourcingandliningonthetubelimitedbearingcapacity