NON-LINEAL SEISMIC ANALYSIS FOR REINFORCED CONCRETE FRAMES

J. FALEIRO; S. OLLER; A. BARBAT

Congreso; 3 Congreso Nacional de Ingeniería Sísmica; 2007

A plastic-damage model for reinforced concrete frames is developed in thisarticle, based on the classical plastic model and the continuum damage model. Theplastic-damage constitutive law is implemented into a beam model for framed structures, in which these are described by elastic beams and columns with two inelastic hinges at their ends. A numerical procedure for predicting the member and global damage in framed structures using the matrix analysis is developed.Additionally, the article introduces a damage index useful in evaluating the state ofstructural members and a meaningful global damage index for whole structure. Theplastic-damage model, together with the member and global damage indices, areadequate for the computation of the limit load of reinforced concrete frames subjectedto seismic actions. Examples of applications of the methodology to the nonlinearanalysis of reinforced concrete framed structures are finally given.