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1MN1,,。,,MN,MN,1。,,N,,M,;,N,,M,;,N,M[1~2]。,,3:①MmaxN;②NmaxM;③NminM。,,,。,3,。,,:,,。2,MmaxNmax、Nmin。。2.11,田慧1张海2姚民立2王玉良2(1、天津城市建设管理职业技术学院建筑工程系天津300134;2、天津城建大学土木工程学院天津300384):对钢筋混凝土柱正截面设计的内力组合提出一种简化计算方法,根据柱的受力情况,分别从非抗震、抗震组合和大、小偏心受压两方面进行计算,并与已有的组合方法进行对比,得出该法适用于大、小偏心抗震组合情况,能保证满足抗震设计的配筋要求,对实际工程具有重要参考价值。:钢筋混凝土;偏压构件;内力组合;截面设计TheChoiceoftheMostUnfavorableCombinationofInternalForcesontheFrameColumnTianHui1ZhangHai2YaoMinli2WangYuliang2(1、TianjinUrbanConstructionManagement&VocationTechnologyCollegeTianjin300134,China;2、SchoolofCivilEngineering,TianjinChengjianUniversityTianjin300384,China)Abstract:Thispaperpresentsacross-sectionaldesignofreinforcedconcretecolumnssimplifiedmethodforcalculatinginternalforcescombined.Basedontheforcecolumn,respectively,fromthenon-seismic,seismiccombinationsandlargeandlittleeccentriccompressionofbothcalculatedandcombinedwiththeexistingmethodofcomparingtheresultsofthemethodissuitableforlargeandlittleeccentricseismiccombinations.Italsocanensuretheseismicreinforcementrequirements,andtheactualprojecthasimportantreferencevalue.Keywords:reinforcedconcrete;memberundereccentricload;internalforcecombination;crosssectiondesignGUANGDONGARCHITECTURECIVILENGINEERING201377JUL2013No.7:(12JCQNJC05300)194M(kN·m)N(kN)As=As′(mm2)31443.471645.992866431.481777.202828298.421598.8215092443.471777.202935443.471598.82281741370.231616.65-63.8-289.281658.98-599.8-313.101042.40100.72370.231658.98-164.5370.231042.40407.82M(kN·m)N(kN)As=As′(mm2)1186.272360.0132339.142520.642981.212332.37236286.272520.6456786.272332.372832198.721832.79-1830-72.852000.63-200141.291778.76-2066298.722000.63-186398.721778.76-17573(mm)(mm)3450×4104500M(kN·m)285.50298.42N(kN)1730.021598.82M(kN·m)-431.48443.47N(kN)1777.201645.994660×7004500M(kN·m)-313.10370.23N(kN)1042.401616.65M(kN·m)218.15-289.28N(kN)1084.781658.981(mm)(mm)1231450×4104500M(kN·m)-81.217.35-37.70-39.14N(kN)2332.372363.172396.312489.55M(kN·m)86.27-47.1619.9620.73N(kN)2360.012390.802423.952520.642660×7004500M(kN·m)41.2998.7271.5074.07N(kN)1778.761832.791834.701941.09M(kN·m)-45.35-92.35-70.33-72.85N(kN)1831.681885.711887.622000.633:1“++”,:1.2SGK+1.4×0.9(SQK+SWK);2,:1.2SGK+1.4SQK;3,:1.35SGK+1.4×0.7SQK。(1)(2),,1.0,。,as=40mm,fy=300Nmm2,fc=14.3Nmm2,,⑴,2。As=As′=Ne-x(1-0.5x)a1fcbh02fy′(h0-as)⑴2:①1,[3],1,As=As′=323mm2;2,As=As′=567mm2;2176%,;②2,,,。2.23。[3~4],gRE(1.2SGE+1.3SEK)。2,,。。Cmhns1.0,。4,⑵,。As=As′=Ne-x(1-0.5x)a1fcbh02fy′(h0-as)⑵4:①3,,1,1As=As′=2866mm2;(42):JUL2013No.7201377203.5、①“”;②、,;③,。3.6①,、、、;、,、,,、。②,,。3.7①、,、;②、、,、。3.8,3~5cm,2~3,,。4、。V,,,,、,、。,、,、,,,、,,。、,,、。[1]CECS50-1993[S]JUL2013No.72013777777777777777777777777777777777777777777(20)2,2As=As′=2935mm2;212.4%,(2);②4,,1As=As′=100.7mm2;2As=As′=407.8mm2;rminbh=0.002×660×700=924mm2,。,,,。,,2,,,2。3,,,,。,,,。[1],.[J].,2009(1)[2].[M].:,2004[3].[J].,1982(1)[4],,.[J].,1993(5)42
本文标题:框架柱正截面设计时最不利内力组合的选择
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