Abstract
This paper presents an elastoplastic bond-slip model for simulation of the anchorage behavior of prestressed strands in concrete structures under both ambient and fire conditions. The model allows for a detailed simulation of the slip and prestress development during fire. The bond model is applied to interface elements between prestressed strands and the concrete structure in a 2-D finite element (FE) model. In this model, temperature effects on material properties of concrete and steel have been considered, according to Eurocode 2. Yield contour depends on the confinement action of the encasing concrete. An arbitrary relation has been set between the slip and the steel stress on 1 side and artificial radial expansion of the strand on the other side. The response of the confining concrete against radial expansion of the strand is calculated in a second 2-D FE model of the concrete cross section. This cross sectional model accounts for the effect of splitting cracks and also for temperature effects. The model is checked against tests on precast, prestressed hollow core slabs at ambient and fire conditions.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
