Nonlinear response prediction of nonprismatic reinforced concrete beams

Abstract

The conventional method for the analysis of prismatic and nonprismatic members, the equivalent system, is accurate but inefficient for nonlinear computations. The method involves the use of an equivalent system of constant stiffness rigidity EI, where both Ex and Ix of the original member vary in any arbitrary manner, and where the material of the member along its length is permitted to be stressed well beyond its elastic limit. The concept does not adequately address nonlinear response predictions and strength deterioration of nonprismatic reinforced concrete beams. In contrast, using a finite element method to analyze nonprismatic members does not require the equivalent system of constant ..