Elastic Modulus Reduction Method-Based Plastic Limit Analysis for Reinforced Concrete Frame Structures

Abstract

In this study, we explore an effective linear elastic iterative finite element technique known as the elastic modulus reduction method, tailored to estimate the limit load of reinforced concrete frame structures. The method determines the element bearing ratio by referencing the generalized yield criterion combined with the strain energy equilibrium principle. Recognizing the bending moment as the chief contributor to the reinforced concrete frame structure damage, we suggest a variant of the element bearing ratio that exclusively focuses on the bending moment yield. Through numerical illustrations, we highlight the method's precision and application for plastic limit analysis in the reinforced concrete frame structures.