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252Vol125No1220035JournalofHebeiInstituteofTechnologyMay.2003:1007-2829(2003)02-0001-04李继才,朱召泉,戚豹,黄正荣(,210098):螺栓连接;弹性法;极限强度法:介绍了按极限强度法计算承受偏心剪力的普通螺栓连接计算方法,通过算例比较了按极限强度法和按目前工程设计中常用的弹性法计算的差别结果表明,极限强度法比传统的弹性方法更合理更经济:TB30213:A0引言1,,56(GBJ17-88),,,,[1],,11传统计算方法1,POe,PPe,[2]:(1),;:2002-09-30:(1976-),,,(2)();(3)Pe,O,O,,O,,2极限强度法,C(C)(2)C,,[2]:2Ri=Ru(1-e-0139$i)0155(1)(1)Ri;Ru;$i(),mm;e()C()$max,,$max,C,,$max9mm[1],(1)Rmax=01983Ru,C,[1](,C):EX=0Eni=1(RiyiPri)=0(211a)EY=0Eni=1(RixiPri)=P(211b)EM=0P(e+r0)-Eni=1(riRi)=0(211c),,,:EX=0RSEni=1(yiPri)=0(212a)225EY=0RSEni=1(xiPri)=P(212b)EM=0P(e+r0)-RSEni=1r=0(212c),3算例分析3111,,8,P100mm,M203Py,Cx,,(211a),13(mm)1xi(mm)yi(mm)ri(mm)$i(mm)RiPRuRiRuxiriRiRu(mm)1234567815151515959595959030-30-909030-30-90911243315433154911241301869916299162130186213161262131612891006185618691007150915171509151918391619161918331361156313611567114911791177114861822511725117861821281709517895178128170E=42146672194r0=55mm(211b)P=4125Ru(211c)P=672194100+55Ru=4134Ru,Pu=4125Ru,Pu=3161Ru,,1717%312(211),,32,:,8,22P(@Ru)nmm=2m=4e=100mme=200mme=100mme=200mmPuPefPuPefPuPefPuPef3621738101214061601211%2114%11615103114141021412%2511%6193161655138131042819%2717%417711158314381513911%3511%:¹3,,80mm,60mm;ºPu=;»Pe=;¼f,f=PU-PePu%2,,,P,4极限强度法在工程设计中的应用311:Pu=C@Nbmin(3)(3)Pu;Nbmin;C,,311,[3],(),C,C,5结论,,,,:[1]1[M]1:,20011[2],1[M]1:,19991(下转第10页)4251320-1327[12]HorikawaShin-ocjo.Onfuzzymodelingusingfuzzyneuralnetworkswiththeback-propagationalgorithm.IEEETransactionsonNeuralNetworks,1992,3(5):801-806Timeseriesanalysisofironoreconsumptionindexbasedonevolutionary-neuralnetworkTANGRui1,2,ZHANGZh-iqiang1,CAIS-ijing1(CivilandEnvironmentalEngineeringSchool,USTBBeijing,Beijing100083,China)Keywords:geneticalgorithm;neuralnetwork;timeseries;ironoreconsumptionindexAbstract:Thispaperhassetupasetofmodelonneuralnetworkanddistinguishedthebestnet-workstructurebymakinguseofgeneticalgorithm.Afterthat,itputforwardanewevolutionary-neu-ralnetworkmethodwhichcanbeappliedtotimeseriesanalysis.Finally,theironoreconsumptionindexinChinaisforecastwiththismethodandtheresultissatisfactory.(上接第4页)CalcualtionofboltconnectionsupportedbyeccentricshealforcewithultimaticstrengthmethodLIJ-icai,ZHUZhao-quan,QIBao,HUANGZheng-rong(DepartmentofCivilEngineeringHehaiUniversity,NanjingJiangsu210098,China)Keywords:boltconnectin;elasticmethod;ultimatestrengthmethodAbstract:Thispaperintroducescalculationofboltconnectinsupportedbyeccentricshealforceonthebasisofultimatestrengthandcomparesultimatestrengthmethodwithelasticmethod.Theresultsindicatethatultimatestrengthmethodismorereasonableandeconomical.1025