钢筋混凝土结构正截面承载力计算的简化

【】1007-9467（2009）03-0050-03■1，2（1.，250010；2.，272400）【】、，4，，，，，，、、,。【】;;;【】TU312【】AReinforcedConcreteStructureisCalculatedtoSimplifyCross-sectionBearingCapacityWANGGuo-hua1LIJin-hai2(1.ShandongProvince,theHuaiRiverBasinWaterResourcesAuthority,PlanningandDesignInstitute,Jinan250010,China2.ShandongProvinceJia-xiangCountyWaterDesign,ShandongJiaxiang272400,China)【Abstract】Reinforcedconcretestructurebending,compressionsectionisnormativeformulaforcalculatingcapacity,therearefourformulaonedollarquadraticequationistheengineeringdesignfrequentlyencountered,directlyintothenumericalsolutionofconcretehighpressurezone.Itsaverytediousprocess,fromthecorrespondingequationofthefinaloutcome,afewisolatedrelevant,simple,directandclear.Greatlyfacilitatetheworkofdesignersandverificationengineeringcalculation.【Keywords】normalformula;thesolutionofquadraticequation;thecalculationofrelatedvalues;theequlibriumequationofthequantityandthemoment1ax2+bx+c=0x=-b±b2-4ac姨2a。7.2.1-1M≤α1fcbxh0-x2+f′yA′s(h0-a′s)-(σ′po-f′py)A′p(h0-a′ps)、7.2.2-2M≤α1fcbxh0-x2+α1fc(b′f-b)h′fh0-h′f2+f′yA′s(h0-a′s)-(σ′po-f′py)A′p(h0-a′p)、7.3.4-2Ne≤α1fcbx(h0-x2)+f′yA′s(h0-a′s)-(σ′po-f′py)A′p(h0-a′p)、7.3.5-2Ne≤α1fcbx(h0-x2)+(b′f-b)h′f(h0-h′f2≤≤)+f′yA′s(h0-a′s)-(σ′po-f′py)A′p(h0-a′p),xAsA′s、、。ArchitecturalandStructuralDesign5027.2.1-1M≤α1fcbx(h0-x2)+f′yA′s(h0-a′s)-(σ′po-f′py)A′p(h0-a′p)。2.1，M=α1fcbx(h0-x2)12α1fcbx2-α1fcbh0x+M=0x2-2h0x+2Mα1fcb=0ax2+bx+c=0a=1;b=-2h0;c=2Mα1fcb。x=-b±b2-4ac姨2a,:x=2h0±(2h0)2-42Mα1fcb姨2=h0±h02-2Mα1fcb姨=h0±h01-2Mα1fcbh02姨=(1±1-2Mα1fcbh02姨)ξh0。“+”“-”ξ=1-1-2Mα1fcbh02姨α1=∑Mα1fcbh02=Mα1fcbh02ξ=1-1-2α姨。x=ξh02a′≤x=ξh0≤ξbh0x7.2.1-2α1fcbx=fyAs-f′yA′s+fpyAp+(σ′po-f′py)A′pα1fcbx=fyAsAs=α1fcbxfy。2.2，。,7.2.1-1M=α1fcbxh0-x2+f′yA′s(h0-a′s)12α1fcbx2-α1fcbh0x+M-f′yA′s(h0-a′s)=0x2-2h0x+2(M-f′yA′s(h0-a′s)α1fcb=0ax2+bx+c=0a=1;b=-2h0;c=2(M-f′yA′s(h0-a′s)α1fcb。x=-b±b2-4ac姨2a,x=(1±1-2(M-f′yA′s(h0-a′s))α1fcbh02姨)h0=ξh0。“+”“-”,ξ=1-1-2(M-f′yA′s(h0-a′s))α1fcbh02姨)α1=∑Mα1fcbh02=M-f′yA′s(h0-a′s)α1fcb,ξ=1-1-2αs姨。x=ξh02a′≤x=ξh≤ξbh0x7.2.1-2α1fcbx=fyAs-f′yA′s+fpyAp+(σ′po-f′py)A′pα1fcbx=fyAs-f′yA′sAsA′s。2.3，ξ=1-1-2α姨α,αs=∑Mα1fcbh02=M-f′yA′s(h0-a′s)+(σ′po-f′py)A′p(h0-a′p)α1fcbx=ξh02a′≤x=ξh0≤ξbh0x7.2.1-2α1fcbx=fyAs-f′yA′s+fpyAp+(σ′po-f′py)A′pAsA′s。37.2.2-2、7.3.4-2、(7.3.5-2)x=ξh0=1-1-2αs姨h0αs。αs=∑Mα1fcbh02∑M4ArchitecturalandStructuralDesign51∑M。x=ξh02a′≤x=ξh0≤ξbh0x7.2.1-2α1fcbx=fyAs-f′yA′s+fpyAp+(σ′po-f′py)A′pAsA′s。4∑M圯αs圯ξ圯x圯As。、。【】【1】GB50010-2002[S].【】2008-10-23(1968～),,[e-mail]。圯圯圯圯圯圯圯圯圯圯圯圯圯圯圯圯圯圯圯圯圯圯圯圯圯圯圯圯圯圯圯圯圯圯圯圯圯圯圯圯圯圯圯圯圯圯【】1007-9467（2009）03-0052-03■,(,473009)【】，。，、、、，。【】;;;【】TU984.14【】AStudyonEcosystemDesignofScenicWaterinCampusZHUJi-dingLITie-dongHenanPoly-technicInstituteNanyang473009,China【Abstract】ScenicWateristheimportantfactorincampuslandscape,andalsomainfactorofecosystemdesign.Thisarticlelaysparticularemphasisonfromtheaspects,suchasthedecorationofscenicwater,thechoiceofhydrophyte,thedesignofwatershore,makinguseofofwaterresources...etc.atthetimeofpayingattentiontothelandscape,studyonecosystemdesignmethodofscenicwaterincampus.【Keywords】Thecampus;scenicwater;ecosystemdesign;Waterresources11“”。。。《》“”。。EnvironmentEngineeringDesign52