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1、White,D.J.,Teh,K.L.,Leung,C.F.&Chow,Y.K.(2010).Ge′otechnique60,No.2,147149[doi:10.1680/geot.8.D.024]DISCUSSIONAcomparisonofthebearingcapacityof?atandconicalcircularfoundationsonsandD.J.WHITE,K.L.TEH,C.F.LEUNGandY.K.CHOW(2008)Ge′otechnique58,No.10,pp.781
2、792T.Orr,TrinityCollegeDublin,Irelandvariousdesignsituations.Salgado(2008)proposedthefol-Theauthorshavepresentedaninterestingpaperconcern-lowingequationthatprovidesagood?ttoMartinsresultsingafundamentalproblemforgeotechnicalengineers:theNa?(Nq1)tan(1:3
3、2?9)(11)bearingcapacityofcircularfoundationsonsand.InthispapertheauthorshaveincludedanequationforthefactorAccordingtoSmoltczyk(U.Smoltczyk(2008),personalNainthebearingcapacityequationforcircularfoundationscommunication),equation(7)wasadoptedforNainENont
4、hegroundsurface,whichhasbeendeterminedfromthe1997-1becauseithadbeenusedinDIN4017asanresultsofcentrifugetests.updatingofearlierapproximations,suchasBrinchHansensTheauthorspaperisparticularlyrelevantatthistimeas(1970)equation,onthebasisoflarge-scaletestso
5、nsandthenewEuropeanStandardforGeotechnicalDesign,ENcarriedoutbyDEGBOinBerlin(Muhs,1971).1997-1:Eurocode7GeotechnicalDesign(CEN,2004)isTheauthorsequationforNaforacircularfoundationcanduetobeimplementedinMarch2010bythenationalbeconvertedtoanequationforNaf
6、orastripfoundationbystandardsorganisationsinthemembercountriesoftheapplyingthefollowingshapefactorcorrectionproposedbyComite′Europe′endeNormalisation(CEN).EN1997-1Lyaminetal.(2007)providestheprinciplesforgeotechnicaldesignascodetextsa?0:0336?9(1t0:002?9
7、)(12)andsomecalculationmodelsininformativeannexes,thatisnotasmandatorycodetext.OneofthesecalculationmodelssothatisananalyticalmethodforcalculatingthebearingcapacityNa(strip)?0:0286e0:2109?9=(0:0336?9(1t0:002?9))ofaspreadfoundation.Asnoexactsolutionexist
8、sforNa,anumberofequationshavebeenproposedforNasincethe(13)bearingcapacityequationwas?rstintroducedbyTerzaghi(1943).TheequationinEN1997-1forNaforastripTheNavaluesforastripfoundationfor?9rangingfrom208foundationwitharoughbaseisto40
