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ContentsForeword1 Scope1……………………………………………………………………………………………………2 NormativeReferences2…………………………………………………………………………………3 MainTermsandSymbols3……………………………………………………………………………… 3.1 Mainterms3…………………………………………………………………………………………… 3.2 Symbolsofmaterialproperties6………………………………………………………………………… 3.3 Symbolsofaction(load),action(load)effectandbearingforce7………………………………………… 3.4 Symbolsofgeometricparameters8……………………………………………………………………… 3.5 Calculationcoefficientsandothersymbols10………………………………………………………………4 General12…………………………………………………………………………………………………5 BasicDesignProvisions13……………………………………………………………………………… 5.1 Generalprovisions13…………………………………………………………………………………… 5.2 Provisionsforultimatelimitstatecalculationofbearingcapacity15………………………………………… 5.3 Provisionsforcheckingcalculationofserviceabilitylimitstate17…………………………………………… 5.4 Durabilityrequirementsforstructures19……………………………………………………………………6 Materials28……………………………………………………………………………………………… 6.1 Concrete28……………………………………………………………………………………………… 6.2 Rebars29………………………………………………………………………………………………7 StructureAnalysis34…………………………………………………………………………………… 7.1 Basicprinciples34……………………………………………………………………………………… 7.2 Linear-elasticanalysis34………………………………………………………………………………… 7.3 Non-linearanalysis36…………………………………………………………………………………… 7.4 Structuredesignbasedonmodeltest37………………………………………………………………… 7.5 Othermethods38………………………………………………………………………………………8 CalculationofUltimateLimitStatesforPlainConcreteStructureMembers39…………………… 8.1 Generalprovisions39…………………………………………………………………………………… 8.2 Membersincompression39……………………………………………………………………………… 8.3 Flexuralmembers42…………………………………………………………………………………… 8.4 Localcompression42…………………………………………………………………………………… 8.5 Detailingreinforcementofplainconcretestructure43………………………………………………………9 CalculationofUltimateLimitStateforReinforcedConcreteStructureMembers44……………… 9.1 Generalprovisionsforcalculationofbearingcapacityofnormalsection44…………………………………… 9.2 Calculationofflexuralbearingcapacityofnormalsection45…………………………………………………DL/T5057—2009 9.3 Calculationofcompressionbearingcapacityofnormalsection48…………………………………………… 9.4 Calculationoftensionbearingcapacityofnormalsection56………………………………………………… 9.5 Bearingcapacitycalculationforobliquesection57………………………………………………………… 9.6 Calculationoftorsionbearingcapacity61………………………………………………………………… 9.7 Calculationofpunchshearbearingcapacity65…………………………………………………………… 9.8 Calculationoflocalcompressionbearingcapacity69………………………………………………………10 CheckingCalculationofServiceabilityLimitStateforReinforcedConcreteMembers71……… 10.1 Crack-resistingcalculationfornormalsection71………………………………………………………… 10.2 Checkingcalculationforcrackwidthcontrolinnormalsection72…………………………………………… 10.3 Checkingcalculationforcrackcontrolofnon-membersystem75…………………………………………… 10.4 Checkingcalculationfordeflectionofflexuralmembers76…………………………………………………11 CalculationofPrestressedConcreteStructuralMembers78……………………………………… 11.1 Provisionsofcalculation78……………………………………………………………………………… 11.2 Generalprovisionsforbearingcapacitycalculationofnormalsection89…………………………………… 11.3 Calculationofflexuralcapacityfornormalsection90……………………………………………………… 11.4 Calculationoftensioncapacityfornormalsection93……………………………………………………… 11.5 Calculationofbearingcapacityforobliquesection94……………………………………………………… 11.6 Checkingcalculationofcrackingprevention95…………………………………………………………… 11.7 Checkingcalculationofcrackwidth99…………………………………………………………………… 11.8 Checkingcalculationofdeflectionforflexuralmembers101………………………………………………12 GeneralProvisionsforConcreteStructure103……………………………………………………… 12.1 Permanentandtemporaryjoints103……………………………………………………………………… 12.2 Concretecover104…………………………………………………………………………………… 12.3 Anchorageofrebar105………………………………………………………………………………… 12.4 Rebarsplices107……………………………………………………………………………………… 12.5 Minimumreinforcementratiooflongitudinalcarryingrebar108……………………………………………… 12.6 Connections,slingsandembeddedpartsofprecastmembers110…………………………………………13 BasicProvisionsforStructuralMembers112………………………………………………………… 13.1 Slabs112……………………………………………………………………………………………… 13.2 Beams115…………………………………………………………………………………………… 13.3 Columns120…………………………………………………………………………………………… 13.4 Nodesofbeamandcolumn121………………………………………………………………………… 13.5 Walls124……………………………………………………………………………………………… 13.6 Compositeflexuralmembers126………………………………………………………………………… 13.7 Deepflexuralmember131……………………………………………………………………………… 13.8 Bracket136…………………………………………………………………………………………… 13.9 Corbels138…………………………………………………………………………………………… 13.10 Supportsofradialgates140…………………………………………………………………………… 13.11 Prestressedconcretepiersofradialgates143………………………………………………………… 13.12 Reinforcedconcretespiralcase149…………………………………………………………………… 13.13 Reinforcedconcretedrafttube150………………………………………………………………………DL/T5057—2009 13.14 Openingsandholesindam150………………………………………………………………………… 13.15 Planegateslot151……………………………………………………………………………………14 DesignPrinciplesforTemperatureAction152……………………………………………………… 14.1 Generalprovisions152………………………………………………………………………………… 14.2 Crackcontrolofmassconcreteundertemperatureaction153……