3_Design-of-diaphragm-walls-according-to-EN-1997-1

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1、DesignofdiaphragmwallsaccordingtoEN1997-1:2004Eurocode7LecalculdeparoisandmouleessurlabaseEN1997-1:2004Eurocode7´A.Sieminska-Lewandowska´WarsawUniversityofTechnology,Warsaw,PolandM.Mitew-CzajewskaWarsawUniversityofTechnology,Warsaw,PolandKeywords:deepexcavations

2、,diaphragmwalls,designapproach,displacementsABSTRACTIn2007,PolishnewstandardPN-EN1997-1Geotechnicaldesign.Part1.GeneralRuleswillbeissued.CurrentlyinPolandtherearediscussionsconcerningtheintroductionoftheEurocode7andthechoiceofDesignApproach(DA)fortheNationalAnne

3、x,forexampletodeepexcavationwalls.Duetotheabove,analysisofthreestandarddesignproblemswereperformed.Analysisweremadeinordertomakethecomparisonbetweencurrentlyuseddesignmethodsandnewones,whichwillbesoonusedtogetherwiththeintroductionofEC7.Intheconclusions,recommen

4、dationsforthepurposeofevaluationofthePolishNationalAnnexarepresented.RESUM´E´En2007,paraıtraenPolognelanouvellenormePN-EN1997-1Calculg´eotechnique.Patrie1.R`eglesg´en´erales.Ladisscusionconc¸ernantlechoixdesApprochesdeCalculenAnnexeNationalepourledimensionnement

5、deparoimouleeestencours.Calculdestroisexamples,conduitsuivantlaNormePolonaiseetlesdeuxApprochesde´CalculdeEC7,parlamethodedumoduleder´eactionsetm´ethodedes´el´ementsfinissontcompar´es.Lexamen´desresultatsmontre,quepourlecalculdeparoismoul´eesurlabaseEC7lApproched

6、eCalcul2peut´etrerecommand´eedansAnnexeNationale.´1INTRODUCTIONtunnelswillbebuilt.TheseexcavationsareusuallyexecutedinaverycomplexgeotechnicalconditionsInPoland,since2004andbefore,whenPolandwithhighwatertableusingasasupportdiaphragmwasonlyanassociatedmemberinCEN

7、,theworkswalls.TheserequiresaspecialcaretobetakenwhileonimplementationofEuropeancodes,includingchoosingDesignApproachandotherdataforPolishEurocode7Geotechnicaldesign,havebeencarriedNationalAnnexofEurocode7.Analysisweremadeinout.Lastyearwasdedicatedforengineersto

8、learnordertomakethecomparisonbetweencurrentlyusednewrules,recommendations,designapproachesanddesignmethodsandnewones,whichwillbesoonusedrequirementsbroughtbytheEuroco