Naslov
Some aspects of the 3D numerical modelling of reinforced and prestressed concrete structures

Autori
Marović, Pavao ; Nikolić, Željana ; Galić, Mirela

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Computational Plasticity VII: Fundamentals and Applications / Onate, Eugenio ; Owen, Roger - Barcelona : International Center for Numerical Methods in Engineering (CIMNE), 2003, 1-18

Skup
7th International Conference on Computational Plasticity

Mjesto i datum
Barcelona, Španjolska, 07.04.2003. - 10.04.2003

Vrsta sudjelovanja
Pozvano predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
numerical analysis; reinforced concrete; prestressed concrete; 3D model; reinforcing bar; prestressing tendon.

Sažetak
The finite element method offers a powerful and general analytical tool for studying the behaviour of reinforced and prestressed concrete structures. In civil engineering practice, numerical modelling of reinforced concrete and prestressed concrete structures is mainly used as a tool for the assessment of the structural safety of non-standard reinforced and prestressed concrete structures. The modelling of concrete, reinforced concrete and prestressed concrete structures contains many difficulties due to the lack of the exact knowledge of its behaviour. The material characteristics itself vary enormously and there are different loading conditions, too. Although a large number of the research has been performed, both experimentally and theoretically, a lot of answers are still missing. During the last two decades different models and modelling techniques, material laws and failure criteria including fracture mechanics have been introduced and exploited but there is no general consensus which one is the most suitable for the numerical modelling of reinforced concrete and prestressed concrete structures. This paper presents, after discussing some general aspects of numerical modelling of the reinforced concrete and prestressed concrete structures, a numerical treatment of reinforcing bars and prestressing tendons in three-dimensional numerical modelling of reinforced and prestressed concrete structures. The reinforcing bars and prestressing tendons are embedded into the 3D concrete element and both are modelled by one-dimensional isoparametric three-node elements. These elements make it possible to model arbitrarily curved reinforcing bars and prestressing tendons in space. Finally, numerical examples are given to compare the results obtained by the described model with the published one, both numerical and experimental.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo

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