1_Sheeting-wall-analysis-by-the-method-of-dependent-pressures

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1、GeotecHanoi2011-ISBN978-604-82-000-8SheetingWallAnalysisbytheMethodofDependentPressuresVeronikaVaneckovaFINELtd.,Prague,CzechRepublic.E-mail:veronika.vaneckova@fine.cz.JiriLaurinFINELtd.,Prague,CzechRepublic.E-mail:jiri.laurin@fine.cz.JanPruskaDepartmentofGeotechnics,FacultyofCivilEngineering,Czech

2、TechnicalUniversity,Prague,CzechRepublic.E-mail:pruska@fsv.cvut.cz.Keywords:sheetingwall,anchoredwall,methodofdependentpressuresABSTRACT:Thispaperdescribesthedependentpressuresmethodwithitsbasicassumptionsaswellaspracticalapplication.Themethodisevaluatedbythereallifeexampleoftheanchoredsheetingwall

3、intheopenpitofMetrostationProsekinPrague.Thesheetingconstructionisbuiltinseveralconstructionstageswithvariousanchoringlevels.Eachconstructionstageisanalysednumericallybythedependentpressuresmethod.Theresultsofthenumericalanalysisshowinternalforcesinthesoldierbeam,itsdeformationandinternalstabilityo

4、fanchorsforeachconstructionstage.Thevaluesofdeformationobtainedfromthedependentpressuresanalysisarecomparedwithmeasuredvaluesfromthein-situmonitoring.Theabovementionedanalysisiscarriedoutusing1INTRODUCTIONthedeformationvariantoffiniteelementmethod.TheThesheetingwallsareusedinmanyconstructionssitess

5、tructureisdividedintofiniteelementsbyplacingwheretheopenpitisbuilt.Thedeformationofthenodesintoalltopologicalpointsofthestructuresheetingwallisaseriousissuewhichhastobe(startingandendpoints,pointsofanchorslocation,addressedineachconstruction.Thein-situpointsofsoilremoval,pointsofchangesofcross-meas

6、urementsareexpensiveandtimeconsuming.Thesectionalparameters)andthencalculatingtherealisticmodelofthebehaviorofthesheetingwallsremainingnodessothatallelementsattainwouldbethereforebeneficial.Weareproposingapproximatelythesamesize.methodofdependentpressureswhichisrealisticmodelThesoilorrockinthevicin

7、ityofthewallbehavesaswhereloadingisdependentonthedeformationoftheideallyelastic-plasticWinklermaterial.Thisbasicwall.Thismethodisbasedonelastic-plasticWinklerassumptionrequiresthedeterminationofsubsoilmodel