Evaluation of Response Reduction Factor of a Reinforced Cement Concrete Building Designed by Performance Based Plastic Design Method and Limit State Design Method

Abstract

The Performance Based Plastic design method uses pre-selected target drift and yield mechanism as performance criteria due to which total collapse of structure can be prevented. A fifteen storey Reinforced Cement Concrete frame was designed using the displacement based Performance Based Plastic Design (PBPD) method and currently used force based Limit State Design (LSD) method. The comparative seismic performance evaluation of the frames was then carried out by assessing the Response Reduction factor as well as the failure pattern. Results show that PBPD frame is found to have a higher response reduction factor as compared to the LSD frame. Also total collapse of the frame is prevented in the PBPD frame as hinges are formed in beams only.