螺栓撬力修正计算方法

43920135BuildingStructureVol．43No．9May2013*710055。。。TTU311．4A1002-848X201309-0088-04ModifiedcalculationmethodforpryingactionBaiRuiHaoJipingTianLiminHuangYuqiCuiYangyangSchoolofCivilEngineeringXi'anUniversityofArchitecture＆TechnologyXi'an710055ChinaAbstractInthedesignofboltstensileconnectionstheeffectsofthepryingactiononconnectedpartsandboltscannotbeneglected．Thefailuremechanismofthehighstrengthbolttensileconnectionwithextendedendplatewasanalyzed．Thecurrentformulaofpryingactionwasmodified．TheapproximatecalculationformulaofbendingmomentoftensileboltswithendplatewasanalyzedwhichwasverifiedbytheexperimentaldataofTsinghuaUniversity．Theresultsshowthatthecalculationmethodofpryingactionandbendingmomentofboltsisfeasible．KeywordshighstrengthboltpryingactionconnectionT-shapedjointbendingmoment*“13115”2009ZDKG-66。[e-mail]。01994Northridge2001995。。1bc。12。、、。11.124。2a。132。3439．12。《》GB50017—20034。5T。1.231《》GB50011—20106“”1aNbtu。2。1b。。31c。。2。22.157。Ttt=4T·e2bfy1+()槡αδ1α=0tctc=4Nbtu·e2bf槡y2fy。NbtuNbt。QQ=δ·α·e2e1·tt()c2·Nbtu3α=1δtc()t2·TNbtu－[]14δδ=1－nd0/bδ·α≤1d0n3。3PPe2Qe1'=e1+d/2e2'=e2－d/2e1e25d。2.213αδ。αα=M2'/M15M1M2'。M2'=Q·e1'6M1+M2'－T·e2'=0767M1=T·e2'－M2'=T·e2'－Q·e1'87M2'=T·e2'－M19TM1=b·t2fy4109820139105α=M2'/M1=4Te2'bt2fy－1111141/δ4。3。。14。44bM=12Tcosθ·d2－12Qcosθ·d212≈dγ1T－γ2()Q/4M'=M－Q+Tsinθ+V/nt·x2213≈12d2γ1T－γ2()Q－Vt·nx[]2θnγ1γ2γ2=2－γ1γ1=η·2Q/T+Qη。8M'。η1e2'd2fyb/bt2fyfyb22.454t2/t2c2.454η=2．454·e2'd2bt2c·fybfy14σ=M/W=32M'/πd3σ+Nt/Ae≤fbtNtAefbt。491。1/kN/kN·mSC2286.4343.7SC3256.9308.3SC4256.6307.9SC5268.4322.1SC6325.3390.4SC7342.3410.8SC8296.1355.3SC2SC6TSC2SC61113。25。10.9Q345。52/mm/mmSC22020SC32020SC42020SC52520SC62024SC72524SC81620d+1.5。4．1SC2d=20mmt=20mme1'=60mme2'=40mmδ=0．785。tc=4Nbtue2/bf槡y=4×243．6×103×32100×槡345=33．61mm20mmNbtuM20243.6kN。2SC2343．7kN·mTT=286．42kNNbtu=09439．243.6kN。0.8124kN。-6a175kN187.5kNα=1.15。Q=51．90kNT=Nt－Q=135.60kN。《》GB/T1228—2006101x=17.5mmM'=12d2γ1T－γ2()Q－Vt·nx[]2=0．104kN·m12341234。7。6SC2γ1γ20.8441.156。6bSC21175kN100N·m134%。4．2SC6d=24mmt=20mme1'=62mme2'=38mmδ=0．745。tc=4Nbtue2bf槡y=4×343．7×103×38100×槡345=38．92mm20mmM24Nbtu343.7kN。2SC6390．4kN·mTT=325．3kN＜Nbtu=390.4kN。-7a200kN230kNα=1.15。Q=57.61kNT=Nt－Q=228．18kN。101x=20mmM'=12d2γ1T－γ2()Q－Vt·nx[]2=0．334kN·mγ1γ20.901.1。7bSC617SC6200kN330N·m134．2%。13。51、。2α111312。3。1．J．20079227-30．2FISHERJWSTRUIKSHA．GuidetodesigncriteriaforboltedandrivetedjointsM．NewYorkJohnWileyandSons1987266-283．3．J．2000151353-360．4GB50017—2003S．2003．5ManualofsteelconstructionLRFDvolumeⅡS．2nded．ChicagoAmericanInstituteofSteelConstruction2000．6GB50011—2010S．2010．7JGJ82—2011S．2011．8．J．2004343375-378．9．J．2004443391-394．10GB/T1228—2006S．2006．19