Computational Concrete Mechanics

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1、Chapter15ComputationalConcreteMechanicsRomanLackner,HerbertA.MangandChristianPichlerViennaUniversityofTechnology(TUWien),Vienna,Austriaseveralorderssmallerthanthemacroscale.Thedevel-1Introduction513opmentofmaterialmodelsaccountingforprocessesat2BasicIngredientsofMultiscaleModeling514differentscaleso

2、fobservation,so-calledmultiscalemod-3AutogenousShrinkageofShotcreteinHybridels,andtheirverificationbyexperimentaltechniquesAnalysisofTunnelLinings516adoptedfromdifferentengineeringdisciplinesrepresentacentralpartintheongoingresearchincomputational4TensionStiffeninginCoolingTowerAnalysis529concretemec

3、hanics.Theadvantagesofsuchmodelsare5ConcludingRemarks538threefold:References5391.Accesstomacroscopicmaterialproperties:Macroscopicmaterialproperties,whichserveasinputforengineeringanalysis,canbedeterminedfromvery1INTRODUCTIONfewmaterialpropertiesofthedifferentconstituentsatIn1995,HofstetterandMang(1

4、995)publishedabookfinerscales(e.g.propertiesofhydrationproducts),con-withthetitleComputationalmechanicsofreinforcedcon-sideringthemicrostructureandmixturecharacteristicscretestructures,coveringthedevelopmentofcomputa-ofthematerial.tionalconcretemechanicsfromitsbeginninginthe1960s2.Considerationofphen

5、omenaatfinerscalesinthecon-tothemid1990s.Sincethen,computationalmechanicstextofcomputationaldurabilitymechanics:ofconcretestructureswasextendedtoconsiderdurabil-Changesofthematerialpropertiesofthedifferentityinthecontextofthehydrationofearly-ageconcrete,constituentsand/orchangesinthemicrostructureand

6、thedehydrationofconcreteathightemperatures,anddis-mixturecharacteristicscanbeconsideredattherespec-solutionprocesses.Forareviewofmaterialmodelsthattivescaleofobservation.weremorerecentlydevelopedforthesimulationofdura-3.Optimizationofmixdesign:bilityproblemsandforapplicationsofthesemodelstoKnowingth

7、eeffectofchangesofmaterialproper-real-lifestructures,thereaderisreferredtoMangetal.tiesoftheconstituents,ofthemicrostructure,andthe(2003).ThematerialmodelsdealtwithinMangetal.mixturecharacteristicsatfi