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1、DesignandConstructionAspectsoftheLargest“PileCurtain”RetainingStructureBuiltintheTropicalSoiloftheBrazilianCentralArea123R.P.Cunha&A.G.B.MedeirosandC.M.SilvaAbstractThispaperpresentsunpublisheddataonthelargestexcavationandretainingstructureofthe“pilecurtain”ty
2、pealreadyconstructedintheCenterofBrazil,morespecificallyatthecityofBrasília.Thiscityischaracterizedbyhavingatropical,unsaturated,collapsiblesandyclaysoilknownastheBrasília“porous”clay.Thesesoilcharacteristicsarereproduced,withsomedifferences,inmostareasoftheBr
3、azilianCentralPlateau.Hence,thepaperbrieflydiscussesaboutprojectdetailsandpresentsthesimplifieddesignapproachadoptedfortheretainingstructure,thatwascarriedoutwiththeGeofine(www.fine.cz)softwarepackage.Thiscasehistoryisalsounderscrutinyofanon-goingresearchthesi
4、s,whichaimstheinterpretationofitsinstrumentedresultsandtheestablishmentofmorerefinednumericalanalyses.IntroductionTheBraziliancapital,Brasília,isapre-designedcitylocatedwithinthe“FederalDistrict”,inthecenterofBrazil.Itwasbuiltintheearly60’stohousethemainGovern
5、mentaladministrativeinstitutionsanditspublicemployees.Ithasincreased(anditisstillexpanding)fourtimesmorethanwhatwas1GeotechnicalGradProgram,DepartmentofCivilandEnvironmentalEngineering,UniversityofBrasília,Brasília-DF,Cep.70910-900,Brazil;PH(+61)3273-7313ext21
6、8;FAX(+61)3273-4644;email:rpcunha@unb.br2GradStudent,GeotechnicalGradProgram,DepartmentofCivilandEnvironmentalEngineering,UniversityofBrasília;email:alexandregil@unb.br3EmbreEngineeringLtd.,SIATrecho03Lote625/695Bloco"A"Sala220,Brasília-DF,Cep.71200-010,Brazil
7、;PH(+61)3233-1033;FAX(+61)3233-2334;email:carlos@embre.com.brinitiallyforecasted,enablingthepracticaluseofdistinctdesigntechniquesforexcavations(anddeepfoundation)withintheseveralconstructionsites.2Hence,in1995theUniversityofBrasíliastartedamajorresearchprojec
8、tinthefoundationarea,inordertoenhancetheknowledgeonthebehaviorofthedistinctfoundationtypesthatarefoundedinthepredominant(tropical,unsaturated)subsoiloftheFederalDistrict.Someyearsl
