Passive energy dissipation device for typical steel frame building in Iran

In order to achieve economical earthquake-resistant constructions building structures must be constructed to dissipate a large amount of seismic energy. Added damping and stiffness (ADAS) elements are designed to dissipate energy through the flexural yielding deformation of mild-steel plates. In this paper, recent research findings on the effectiveness of using steel plate welded as the added damping and stiffness (ADAS) device for earthquake-resistant structure on an interesting type of semi-rigid steel naming connection which is commonly used in Iran (including in seismic zone) are presented. Experimental results indicate that a properly designed (ADAS) device can sustain a large number of yielding reversals without any stiffness or strength degradation. A research program was under taken to investigate the behavioral aspect of a half scale model of the 4-story structure frame upgraded with ADAS elements and subjected to dynamic loads.