Abstract
The calculation method for the shear strength of shear walls was shown in [Design Guidelines for Earthquake Resistant Reinforced Concrete Buildings Based on Inelastic Displacement Concept] published by ARCHITECTURAL INSTITUTE OF JAPAN (following, called AIJ equation). The calculated results by AIJ equation correspond with experiment results. But, the assumption that all horizontal bars in shear walls yield when shear walls reach at shear strength does not correspond with real phenomena. So, the new calculation method was developed. In the proposed method, the shear strength was determined with concrete compressive strength or horizontal bars yield strength. The calculation results by the proposed method corresponded better with experiment results than AIJ equation.