ANALYTICAL MODEL AND STRUCTURAL PERFORMANCE OF R/C FRAMES USING HIGH-STRENGTH REBARS TO REDUCE POST-EARTHQUAKE RESIDUAL DEFORMATION

Abstract

Targeting reinforced concrete buildings in which beams yield first, a design method for RC beams was proposed that uses high-strength rebars at the top of the beams and provides secondary stiffness in the skeleton curve to reduce residual deformation after an earthquake. The proposed beam controls the hysteresis characteristics by the yield strength of the upper reinforcement. Using analytical models of columns and beams created based on the results of loading experiments, several types of analytical models of RC frames were created, and response analyses were performed on each model using earthquake waves to clarify their structural performance.