A Damage Model for Reinforced Concreteby Young Soo Chung, Princeton Univ, United States,
Christian Meyer, Princeton Univ, United States,
Masanobu Shinozuka, Princeton Univ, United States,
Abstract: The damage index developed by the authors models concrete damage as a low-cycle fatigue phenomenon. By quantifying the energy dissipated as a fraction of the total energy dissipation capacity, the model simulates both the residual strength and stiffness and capacity to resist further loading. Coupled with the authors' hysteresis model for RC frame members subjected to cyclic loading, it is capable of accurately reproducing experimental load-deformation curves, including the strength and stiffness degradation observed in such experiments. Thus the model is suitable for seismic risk evaluations of RC buildings damaged by strong earthquake ground motions.
Subject Headings: Reinforced concrete | Mathematical models | Fatigue (material) | Load bearing capacity | Stiffening | Construction materials | Strength of materials
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