Abstract
In this study, constitutive equation of reinforced concrete element was developed based on Lattice Equivalent Continuum Method. Lattice Equivalent Continuum Method is a technique to construct a constitutive equation by using the concrete and reinforcement main lattice system to express the flow of force in RC elements and shear lattice system on crack surface to evaluate shear rigidity. In addition, the objective of this study is to develop a more robust and powerful analytical tool from the view point of constitutive equation and algorism. The validity of the proposal constitutive equation was examined by analysis of RC panel. The validity of proposal analytical toll was examined by evaluating the post peak behavior of RC beam failing in shear including snap-back instability.
