COMPARISON AND DISCUSSION OF REQUIRED STRENGTH DETERMINED BY SEISMIC PROVISIONS OF CALCULATION OF RESPONSE AND LIMIT STRENGTH AND THE INTERNATIONAL BUILDING CODE

Abstract

This paper compares and investigates the relationship between required strength and response ductility of the seismic design codes of International Building Code used in the U.S., and Calculation of Response and Limit Strength used in Japan. Based on dynamic theory, the paper also proposes the rational modification for International Building Code for two patterns of yield drift angle models which significantly affect on the dynamic response of the buildings. The modified International Building Code shows excellent correspondence to Calculation of Response and Limit Strength.