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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]DISCUSSIONAcomparisonofthebearingcapacityofflatandconicalcircularfoundationsonsandD.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-lowingequationthatprovidesagoodfittoMartinsresultsingafundamentalproblemforgeotechnicalengineers:theNª¼(Nq1)tan(1:3
3、2ö9)(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)providestheprinciplesforgeotechnicaldesignascodetextsª¼0:0336ö9(1þ0:002ö9
7、)(12)andsomecalculationmodelsininformativeannexes,thatisnotasmandatorycodetext.OneofthesecalculationmodelssothatisananalyticalmethodforcalculatingthebearingcapacityNª(strip)¼0:0286e0:2109ö9=(0:0336ö9(1þ0:002ö9))ofaspreadfoundation.Asnoexactsolutionexist
8、sforNª,anumberofequationshavebeenproposedforNªsincethe(13)bearingcapacityequationwasfirstintroducedbyTerzaghi(1943).TheequationinEN1997-1forNªforastripTheNªvaluesforastripfoundationforö9rangingfrom208foundationwitharoughbaseisto40
