Development and analysis of passive hybrid energy dissipation system for steel moment resisting frame

A passive hybrid energy dissipation system (PHEDS) consists of rate dependent devices in series with rate independent devices, is installed in Steel moment resisting frame (SMRF) to improve energy dissipation capacity while any seismic event. Analytical development of model in SAP 2000 and performance based design of energy dissipating devices (EDD), were the basic objectives of the study. High damping rubber damper (HDRD) is a rate dependent device whereas elastic springs and buckling restrained braces (BRB) are rate independent devices. The analytical models confirmed the expected phased behavior and energy dissipation capabilities. An incremental dynamic analysis (IDA) was carried out to compare the effect of energy dissipating devices on overall seismic response of SMRF, a dual BRB-SMRF system, and a dual PHEDS-SMRF system. The results demonstrate that the PHEDS has potential as an energy dissipation system and improve the performance of the structure during a seismic event.