Reliability of prestressed concrete structures considering creep models

Reliability of prestressed concrete structures considering creep models

The reliability of prestressed concrete structures subject to viscoelastic behaviour is investigated regarding the creep model defined by the Eurocodes. A probabilistic phenomenological model is proposed for long-term creep strains on the basis of large database of creep tests. The uncertainties in...

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Bibliographic Details
Published in:Structure and infrastructure engineering Vol. 10; no. 12; pp. 1595 - 1605
Main Authors: Chateauneuf, Alaa M., Raphael, Wassim E., Moutou Pitti, Rostand J.B.
Format: Journal Article
Language:English
Published: Taylor & Francis 02-12-2014
Taylor & Francis (Routledge): STM, Behavioural Science and Public Health Titles
Subjects:
bridges
Civil Engineering
Construction durable
Creep (materials)
creep models
Creep tests
durability
Engineering Sciences
Errors
Materials
Mathematical models
Matériaux composites et construction
Prestressed concrete
prestressed concrete structures
reliability
Strain
Structures
Viscoelasticity
creep models
bridges
prestressed concrete structures
reliability
durability
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Summary:The reliability of prestressed concrete structures subject to viscoelastic behaviour is investigated regarding the creep model defined by the Eurocodes. A probabilistic phenomenological model is proposed for long-term creep strains on the basis of large database of creep tests. The uncertainties in the geometrical and mechanical parameters are modelled by random variables. The proposed model considers also the statistical fitting error in creep strain predictions. The reliability analysis is performed on a prestressed concrete deck, in order to show the large impact of time-dependent phenomena on the reliability of prestressed structures, and consequently the importance of considering appropriate viscoelastic models in the design of this kind of structures. Moreover, the errors related to creep models are shown to play a very important role in the structural safety assessment.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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content type line 23
ISSN:1573-2479
1744-8980
DOI:10.1080/15732479.2013.835831