配筋圓鋼管混凝土短柱軸壓試驗(yàn)研究.pdf

1、東南大學(xué)碩士學(xué)位論文配筋圓鋼管混凝土短柱軸壓試驗(yàn)研究姓名：繆巍申請學(xué)位級別：碩士專業(yè)：建筑與土木工程指導(dǎo)教師：舒贛平20100301AbstractConcrete—filledsteeltube，塒Ⅱltheadvantageofheavy—load，fireresistance，iswidelyadoptedinmanystructuresButinsomearchitecture，itsbearingcapacitycannots

2、atisfytheneedTheconcrete—filledsteeltubeassistedbysteelbarsisanexcellentwaytosettlethisproblem，whichiSseldominvolvedindomesticandforeignliteratureInthisarticle，itisthefirsttimethataxialcompressiontestsarecarriedoutandman

3、yfactorsareconsideredAfterfmiteelementanalysisofreinforcedconcretefilledtube，bearingcapacityformulaisderivedThensomeapplicationprinciplesaregivenThemainconclusionsarelistedasbelow：1ThesteelbarCangreatlyimprovethebearingc

4、apacityofconcretefilledtubeIntheaxialcompressiontest，comparedwiththepureconcretefilledtube，itsloadingcapacityisclearlypromotedTheresultsshowthatwhenthereinforcementratioisnolessthan3％，thebearingcapacityCanimprovenearly20

5、％Sothisisaperfectsolutiontotheheavyload2BarsinthesteeltubecanlimittheearlycrackintheconcreteItisusualthatthefailuremodesarestronglysensitivetothemirocrackintheconcreteThecoreconcretecouldcrackelideorslip；Steeltubecouldyi

6、eldorbuckleWiththecontributionofthebars，thecrackpropagationinthetubecouldbedelayed3Duetothelowcosteffectivenessratio，theapplicationofreinforcementconcretefilledsteeltubeiSlimitedAfterthesteelbarisconvertedtothethicknesso

7、fthesteeltube，comparedwiththepureconcretefilledsteeltubewithnearbysteelratio，thereinforcementconcretefilledsteeltubecallonlyimprove1325％Consideringthehoopandtheworkloadofassemblingreinforcement，thisincreasedrangeisslight