Naslov
Parametric analysis of constant-moment zone length in four point bending of reinforced concrete beams

Autori
Galić, Mirela ; Marović, Pavao ; Harapin, Alen

Izvornik
Materialwissenschaft und Werkstofftechnik (0933-5137) 44 (2013), 5; 449-457

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
compressed concrete; ductility; finite element; four point bending; size effect

Sažetak
This paper describes performed numerical parametric analyses of constant-moment zone length in four point bending of reinforced concrete structures by developed three-dimensional numerical material model for analyzing reinforced concrete structures. The model is defined by elementary material parameters which can be obtained by a standard uniaxial test so that the very complex behaviour of reinforced concrete structures can be described simply and effectively but with a sufficiently accurate model. The aim is to reproduce and to compare obtained results with the one obtained on mechanical two-dimensional model, by Fantilli et al. and experimentally by Weiss et al. where a constant-moment zone length is investigated to determine whether the flexural response of reinforced concrete beams is size (length) dependent. Parametric analyses will be performed on normal-strength concrete (NSC) and high-strength concrete (HSC) beams with four different constant-moment zone lengths and two different reinforcement ratios. As developed model enables a very detailed and precise analysis of reinforced concrete structures until crushing with a high accuracy we hope to confirm Fantilli et al. results what could lead to the improvement of Eurocode 2 where size effect on the structural response of compressed concrete is not taken into account.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo, Temeljne tehničke znanosti

Napomena
Special Issue: Advanced Computational Engineering and Experimenting (ACE-X 2012).

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