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http://dx.doi.org/10.12989/cac.2010.7.4.303

Stress resultant model for ultimate load design of reinforced-concrete frames: combined axial force and bending moment  

Pham, Ba-Hung (Ecole Normale Superieure de Cachan - Laboratoire de Mecanique et Technologie)
Davenne, Luc (Ecole Normale Superieure de Cachan - Laboratoire de Mecanique et Technologie)
Brancherie, Delphine (Universite de Technologie de Compiegne)
Ibrahimbegovic, Adnan (Ecole Normale Superieure de Cachan - Laboratoire de Mecanique et Technologie)
Publication Information
Computers and Concrete / v.7, no.4, 2010 , pp. 303-315 More about this Journal
Abstract
In this paper, we present a new finite Timoshenko beam element with a model for ultimate load computation of reinforced concrete frames. The proposed model combines the descriptions of the diffuse plastic failure in the beam-column followed by the creation of plastic hinges due to the failure or collapse of the concrete and or the re-bars. A modified multi-scale analysis is performed in order to identify the parameters for stress-resultant-based macro model, which is used to described the behavior of the Timoshenko beam element. The micro-scale is described by using the multi-fiber elements with embedded strain discontinuities in mode 1, which would typically be triggered by bending failure mode. A special attention is paid to the influence of the axial force on the bending moment - rotation response, especially for the columns behavior computation.
Keywords
reinforced concrete frames; macro model; embedded discontinuities;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
Times Cited By SCOPUS : 1
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