SEISMIC RESPONSE MODIFICATION FACTOR FOR REINFORCED CONCRETE FRAMES BASED ON NON-LINEAR PUSHOVER ANALYSIS AND TIME HISTORY ANALYSIS

Abstract

In many countries and regions in the world, earthquakes are one of the most common natural disasters, which affect human life and property. To avoid the negative effects of earthquakes(EQs), the nonlinear response of structures under dynamic loading should be accurately modelled to investigate their actual behaviour under earthquake loading to ensure safe and economic design. Most seismic design codes today include the structure nonlinear response implicitly through a ‘response reduction/modification factor’(R). This factor allows a designer to use linear elastic force based method while representing nonlinear behaviour and deformation limits. This research focuses on estimating the actual values of this factor for reinforced concrete(RC) moment resisting frames, which were designed and detailed according to the ECP and ASCE code standards for seismic and comparing these values with the value proposed in the design code