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单肢连接的单角钢压杆承载力分析康强文童根树(310027)在比较国内外规范对单面连接角钢压杆的设计规定的基础上,利用ANSYS有限元程序对单面连接等边单角钢极限承载能力进行分析,提出了单面连接角钢的承载力设计公式,同时考察了角钢两端支承条件荷载偏心角钢肢宽厚比对极限承载能力的影响单角钢有限元极限承载能力单面连接LOADCARRYINGCAPACITYOFSINGLEANGLESTRUTSCONNECTEDWITHONELEGKangQiangwenTongGenshu(CollegeofArchitecturalEngineering,ZhejiangUniversityHangzhou310027)ABSTRACTItwasreviewedthatthevariouscodedesignmethodsofsingleanglestrutsconnectedonlybyoneleg,andgreatdifferencesarefoundamongthemItwasalsoanalysedtheultimateloadcarryingcapacityofsingleangleusingANSYS,andpresentedasimpleformulatoconsidertheunfavorableeffectofloadeccentricitycausedbyconnectiondetails,andthefavorableeffectofrestrainingprovidedbyadjacentmembersKEYWORDSsingleangleFEMultimateloadcarryingcapacityconnectedwithoneLeg1,,,xyuv,1a,o,v,uxy,,,a-;b-;c-111各国规范对角钢承载能力设计的规定(GB50017-2003)[1](!∀),,,N#tAfcal=09L/ivb,t,t=06+00015=063~10:19787Email:starkang@163.com:2005-12-16BS5950-1∃2000[2],,,BS5950c:1=085Lv/iv1%07Lv/iv+15(1a)2=10Lx/ix2%07Lx/ix+30(1b)3=085Ly/iy3%07Ly/iy+30(1c)(1)xASCE[3]L/ivKL/i,KL/i:L/iv#120,KL/i=60+050L/iv(2a)120L/iv#250,KL/i=462+7康强文,等:单肢连接的单角钢压杆承载力分析SteelConstruction2006(2),Vol21,No850615L/iv(2b)ECCS[4]eff,(y=!E/fy):/y#141,(/y)eff=060+057/y(3a)/y%141,(/y)eff=035+07525/y(3b)[5],/y#2,v,(/y)modified=035+07525/y(4a)xy:(/y)modified=050+06464/y(4b)/y2,vxy:(/y)modified=050+06464/y(4c)=Ncr/(Af),,,2=L/iv,=L/iv09L/ivb,,L/iv(1)~(4),ECCS-EC3bASCE-ASD(b)2,ASCE,BS5950-1ECCS,!∀,80~140,!∀212目前国内外对单面连接角钢研究现状,,,,[6],-;x,y[7],,yzyuzu,,,09Popovic[8],,,,;,,xSherief[9]∀(1a),,,[10],[10],,,2,ANSYSShell181,E=206GPa;1/1000;,[11],30%,#r=03fy,1b8科研开发钢结构2006年第2期第21卷总第85期1c,[6],x(1a),y,[6],ABDExy0,,3a;DEz0,yp,P,∀=05∀,1a3,P-∃,,,,,x,4,ANSYSPopovic[8]4,-&75∋6&75∋8&100∋8&120∋9&120∋12,22,,ANSYS!∀,20%,,!∀,,,,,,y,ECCS,Q235,y=!E/fy(93,,,,,,AISC-LRFD[12],!∀b,5,cal=09L/iv160,!∀b,5ANSYS!∀ANSYS!∀b,6t:cal#40,t=060(5a)cal40,t=047+00033cal#10(5b)(5)!∀53,(3b),(3a,AB9康强文,等:单肢连接的单角钢压杆承载力分析SteelConstruction2006(2),Vol21,No856;3b,ABDE),&75∋67,!∀,,!∀y,(3a),!∀;,yt,(5a),74!∀∀,&75∋6,,∀=030406ANSYS,∀=05(1)1Pcr0/kN(∀=05)Pcr1/kN(∀=03)Pcr2/kN(∀=04)Pcr3/kN(∀=06)(Pcr1Pcr0-1)∋100/%(Pcr2Pcr0-1)∋100/%(Pcr3Pcr0-1)∋100/%26131029104410371022149074-0735226964980972956169084-0828165876894885868206102-0999798837859847826265128-12113064749737743755-162-0830871633535528531538-116-05906019596393390391395-082-04104222862300298299302-062-0310551,,,,∀,∀,∀∀=0406,∀=0515%,5max=v=24L/b,Lb,t!∀,ANSYSb/t75&75∋6&75∋8&75∋9,1259375833,120&120∋9&120∋10&120∋12,13331210ANSYS,810科研开发钢结构2006年第2期第21卷总第85期8,b,t,8,75mm125833,5%,b/t!∀,6ANSYS,:1),,,,2)!∀,,!∀,(5)3)∀,∀4)b/t!∀,1GB50017-20032BS5950-1∃2000StructuralUseofSteelworkinBuildingPart1:CodeofPracticeforDesignRolledandWeldedSectionsLondon:BSI,20003ASCEStandardDesignofLatticedSteelTransmissionStructureNewYork:AmericanSocietyofCivilEngineers,19914EuropeanConventionforConstructionalSteelwork(ECCS)EuropeanRecommendationsforSteelConstructionSecondEditionBrussels:19785ECCSManualonStabilityofSteelStructuresBrussels:19766,,1982,10(3):56-717T,2000,15(4):47-498PopovicD,HancockGJ,RasmussenKHRCompressionTestsonColdFormedAnglesLoadedParallelwithaLegJStructEng,ASCE,2001,127(6):600-6079SheriefSSSaklaNeuralNetworkModelingoftheLoadCarryingCapacityofEccentiacallyLoadSingleAngleStrutsJConstructSteelResearch,2004,50:965-98710MadugulaMKS,KennedyJB.SingleandCompoundAngleMembersStructuralAnalysisandDesignLondon:ElsevierAppliedSciencePublishers,198511KitipornchaiS,LeeHW.InelasticExperimentsonAngleandTeeStrutsJConstructureSteelResearch,1986,32(6):219-23612AISC.LoadandResistanceFactorDesignSpecificationforSingleAngleMembersChicago:AmericanInstituteofSteelConstruction,2000,,,,,,:0571-8237996982637578135882685081335770557011康强文,等:单肢连接的单角钢压杆承载力分析SteelConstruction2006(2),Vol21,No85