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A new modeling Strategy for the behavior of walls under dynamic loading

Abstract : A new simplified modelling strategy to simulate the non‐linear behaviour of reinforced concrete shear walls under dynamic loading is presented. The equivalent reinforced concrete (ERC) model is derived from the framework method and uses lattice meshes for concrete and reinforcement bars and uniaxial constitutive laws based on continuum damage mechanics and plasticity. Results show the capacity of the model to analyse structures having different slenderness and boundary conditions. For low reinforcement ratios however, results are sensitive to the angle formed by the diagonals of the concrete lattice and the horizontal bars. The method is compared with the shear multi‐layered beam model that uses Timoshenko multi‐layered 2D beam elements and biaxial constitutive laws. Comparisons for both models with experimental results of two research programs (one organized by NUPEC and the other by COGEMA and EDF) are provided. ERC is a simplified method that intends to save computer time and allows parametrical studies.
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Jacky Mazars, Panagiotis Kotronis, Luc Davenne. A new modeling Strategy for the behavior of walls under dynamic loading. Earthquake Engineering and Structural Dynamics, Wiley, 2002, ⟨10.1002/eqe.131⟩. ⟨hal-02053290⟩



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