Paper number 1245
|NUMERICAL SIMULATION OF THE NON LINEAR BEHAVIOUR OF REINFORCED CONCRETE STRUCTURES|
S. HASSANI-MANAI, R.CABRILLAC
Laboratoire Matériaux et Sciences des Constructions
Université de Cergy Pontoise I.U.P Génie Civil et Infrastructures
5 mail Gay-Lussac Neuville Sur Oise 95031 Cergy-Pontoise Cedex France
|Summary||Many tests carried out on reinforced concrete structures prove that it is not possible to obtain, with a linear calculation, a correct representation of constructions' behaviour. Consequently, developing numerical methods that takes into account different types of non linearity becomes a necessity. The physical one which takes into account the non linearity of concrete behaviour and the geometric one which concerns the overall structure behaviour. The calculation method described here is used to simulate ruin of slender structure made of reinforced concrete and proves that ruin occurs by equilibrium divergence. In this method the structure overall stability is analysed, taking the deflexion into account (second order theory) and considering non linear stress-strain relation of concrete. The comparison of numerical results with experimental results has enabled us to test the used method and to study the impact of various parameters on the critical load computation.
||Keywords|| numerical simulation, slender structures, reinforced concrete, non linearity, buckling.
Theme : Reinforcement and repair in Civil Engineering and Building Construction
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