Stress concentrations induced by active and passive reinforcements in a concrete containment building

Author(s): Laurent Charpin, Jean-Philippe Mathieu, Thierno Sow
Paper category: Proceedings
Book title: Proceedings of the 2nd International RILEM/COST Conference on Early Age Cracking and Serviceability in Cement-based Materials and Structures Volume 2
Editor(s): Stéphanie Staquet and Dimitrios Aggelis
ISBN:978-2-35158-200-8
e-ISBN:978-2-35158-198-8
Publisher: RILEM Publications SARL
Publication year: 2017
Pages: 591-596
Total Pages: 6
Language : English

Abstract: EDF studies the behavior of concrete containment buildings since delayed strains of concrete cause the prestress to decrease, impairing the containment capacity. This work deals with sub-modelling of a representative part of the VeRCoRs inner wall cylindrical part submitted to delayed strains. To do so, a representative periodic model of the VeRCoRs wall is studied. First, the effect of the stiffness brought by the steel parts is studied. It is found that they contribute to around 8% of the horizontal and hoop stiffness, and have an even greater impact on radial strains. Second, the stress concentrations around steel bars and prestress ducts are observed. Tensions up to 2 MPa can appear after 7 years of creep due to the rigid inclusion effect of the steel bars and ducts.

Online publication : 2017
Publication type : full_text
Public price (Euros) : 0.00