A Modern Technique to Reduce the Seismic Response (The SR Ratio in the Frame Systems with Developed Dampers ADAS*)

Abstract

To achieve desirable seismic performance, the traditional method of design the dimension of structural members is discarded by introducing energy dissipation systems and control system. So this search summarizes a developed metallic damper for earthquake protection of structures, This strategy is attractive for two primary reasons:

• Damage to the gravity-load-resisting system is substantially reduced, likely leading to major reductions in post-earthquake repair cost.
• Earthquake-damaged dampers can be easily replaced without the need to shore the gravity framing.

This study use ABAQUS software to evaluate energy absorption capacity of developed hysteretic steel damper for earthquake protection of five- story - building by change the SR Ratio and read the Seismic Response (story drift, story acceleration and damping ratio) in the Frame. The result shows reduction of first story acceleration increases from 42% to 0.72% when SR reduces five times (El Centro PGA=0.1g), and from 64% to 83%, when SR reduces five times ( El Centro PGA=0.4g). The equivalent damping increases from 17.2% to 26.7% when SR reduces five times ( El Centro PGA=0.1g), and from 25.6 to 29.2 at PGA=0.4g.