腐蚀钢筋再生混凝土板弯曲性能试验研究

43120131BuildingStructureVol．43No．1Jan．2013*1121210016221003710、100%、。。TU375.2A1002-848X201301-0069-04ExperimentalstudyonflexuralperformanceofrecycledconcreteslabswithcorrodedreinforcingbarsWuJin1WangDongdong1WuFanghua21DepartmentofCivilEngineeringNanjingUniversityofAeronauticsandAstronauticsNanjing210016China2JinchenGroupCo．Ltd．Nanjing210037ChinaAbstractBasedonthestaticexperimentsof10simple-supportedrecycledconcreteslabswithdifferentsteelcorrosiondegreeand100%recycledaggregatethefailuremodebearingcapacityandmid-spandeflectionofrecycledconcreteslabswithcorrodedreinforcingbarswereinvestigated．Accordingtotheresultstherelationshipsbetweenbearingcapacityanddeflectionofrecycledconcreteslabsandsteelcorrosiondegreewereestablished．Thecalculationformulaforbearingcapacityofrecycledconcreteslabswithcorrodedreinforcingbarswasputforward．Keywordscorrodedreinforcingbarrecycledconcreteslabfailuremodebearingcapacitydeflection*51279074。[e-mail]。01。。。12-5。。11.1RCA5～31.5mm3.6%。2.51。42.5。。8mmHPB235。C251。∶∶∶=1∶1.58∶2.58∶0.52。1/MPaW/C/kg/m3250.521038636402208.41.210、、、100%80mm×300mm×2400mm388@24015mm。1。20131。9。2A2.65mA/cm2。。、、、62。2B1B2B3B6B7B10B4B8B5B9/%02.04.06.08.010.012.014.016.018.0/%04.16.210.012.314.415.416.217.418.21.3150mm2100mm700mm。5、。。2。222.1B2B325%B150%60%～70%0.2mm80%0.4～0.5mm1.5mm42mmB1。B6B7。80%B2B3B1B6B7。B10B4B8B6B7。B5B910%B5B9。10。42mm。。2.22.2.13B6。3。2.2.2《》GB50152—92707431．3M。4。4M=－0．0008λ2+0．0038λ+0．8389M0MM0《》GB50010—20108λ。6%。417%。1720132.35-。。5-。。、、、、。、、。。。31。。26%。。3。1．M．2008．2．D．2006．3．D．2003．4．J．201031278-84．5．9D．2008．6GB10124—88S．1988．7GB50152—92S．1992．8GB50010—2010S．2011．583T、、、T。TT。4T。1．M．2001．2．J．201040796-98．3CHENG-TZUTHOMASHSU．BiaxialloadedI-shapedreinforcedconcretecolumnsJ．JournalofStructuralEngineering1985111122576-2595．4．J．200740715-21．5．LD．2000．6．D．2000．7．D．2006．8JGJ149—2006S．2006．27