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Conference Paper: Multi-layer visco-elastic creep model for time-dependent analysis of concrete structures

TitleMulti-layer visco-elastic creep model for time-dependent analysis of concrete structures
Authors
KeywordsConcrete
Cracking
Creep
Finite Element Method
Shrinkage
Viscoelasticity
Issue Date2007
Citation
The 11th International Conference on Civil, Structural and Environmental Engineering Computing & the 9th International Conference on the Application of Artificial Intelligence to Civil, Structural and Environmental Engineering, St. Julians – Malta, 18-21 September 2007. How to Cite?
AbstractTime-dependent analysis of shrinkage and creep effects on concrete structures is crucial for the assessment of shrinkage cracking problem as well as for the evaluation of mitigation measures. For general structures, the time-dependent analyses are most suitably conducted using the finite element method. In accordance with the conventional concrete creep models (including the prevalent codified formulations), when the stresses in concrete vary with time, the corresponding creep strains at any time have to be determined as a summation of individual creep responses due to stress increments in preceding time intervals. However, such summation process entails the memorisation of stress histories for all finite elements, thus leading to prohibitive computer storage requirements for large analysis problems. In this paper, a multi-layer visco-elastic creep model is developed for concrete by combining rheological elements in an optimal configuration. The model successfully circumvents the need of memorising the stress histories of concrete, thereby greatly facilitates the computer analyses of timedependent effects on concrete structures. To demonstrate the general applicability of the proposed model, numerical examples on restrained concrete prism and concrete podium structure are presented. © 2007 Civil-Comp Press.
DescriptionSession - Reinforced Concrete: Analysis, Modelling and Assessment: no. CC.158
Persistent Identifierhttp://hdl.handle.net/10722/152171
References

 

DC FieldValueLanguage
dc.contributor.authorNg, PLen_US
dc.contributor.authorLam, YKen_US
dc.contributor.authorKwan, AKHen_US
dc.date.accessioned2012-06-26T06:35:47Z-
dc.date.available2012-06-26T06:35:47Z-
dc.date.issued2007en_US
dc.identifier.citationThe 11th International Conference on Civil, Structural and Environmental Engineering Computing & the 9th International Conference on the Application of Artificial Intelligence to Civil, Structural and Environmental Engineering, St. Julians – Malta, 18-21 September 2007.en_US
dc.identifier.urihttp://hdl.handle.net/10722/152171-
dc.descriptionSession - Reinforced Concrete: Analysis, Modelling and Assessment: no. CC.158-
dc.description.abstractTime-dependent analysis of shrinkage and creep effects on concrete structures is crucial for the assessment of shrinkage cracking problem as well as for the evaluation of mitigation measures. For general structures, the time-dependent analyses are most suitably conducted using the finite element method. In accordance with the conventional concrete creep models (including the prevalent codified formulations), when the stresses in concrete vary with time, the corresponding creep strains at any time have to be determined as a summation of individual creep responses due to stress increments in preceding time intervals. However, such summation process entails the memorisation of stress histories for all finite elements, thus leading to prohibitive computer storage requirements for large analysis problems. In this paper, a multi-layer visco-elastic creep model is developed for concrete by combining rheological elements in an optimal configuration. The model successfully circumvents the need of memorising the stress histories of concrete, thereby greatly facilitates the computer analyses of timedependent effects on concrete structures. To demonstrate the general applicability of the proposed model, numerical examples on restrained concrete prism and concrete podium structure are presented. © 2007 Civil-Comp Press.en_US
dc.languageengen_US
dc.relation.ispartofProceedings of the 11th International Conference on Civil, Structural and Environmental Engineering Computingen_US
dc.subjectConcreteen_US
dc.subjectCrackingen_US
dc.subjectCreepen_US
dc.subjectFinite Element Methoden_US
dc.subjectShrinkageen_US
dc.subjectViscoelasticityen_US
dc.titleMulti-layer visco-elastic creep model for time-dependent analysis of concrete structuresen_US
dc.typeConference_Paperen_US
dc.identifier.emailKwan, AKH:khkwan@hkucc.hku.hken_US
dc.identifier.authorityKwan, AKH=rp00127en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-80053405181en_US
dc.identifier.hkuros152088-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-80053405181&selection=ref&src=s&origin=recordpageen_US
dc.identifier.scopusauthoridNg, PL=15045284100en_US
dc.identifier.scopusauthoridLam, JYK=24831751200en_US
dc.identifier.scopusauthoridKwan, AKH=7101738204en_US
dc.customcontrol.immutablesml 151120 - merged-

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