SEISMIC RESPONSE MODIFICATION FACTOR FOR REINFORCED CONCRETE SHEAR WALLS BASED ON NONLINEAR PUSHOVER ANALYSIS AND TIME HISTORY ANALYSIS

Abstract

Earthquakes are one of the most common natural disasters, which affect both human life and property. To avoid negative effects of earthquake, the nonlinear response of structures under dynamic loading should be accurately modelled to investigate their actual behaviour under earthquake loading to ensure safe and sound design. To yield proper results, accurate representative structural models should be developed for the elements resisting lateral loading and representative ground motions pertaining to the site should be employed. Then relating such response to that of elastic behaviour should be conducted to correlate response modification factors in design codes with actual response. The main objective of the research is to study factors affecting response modification factor for reinforced concrete shear walls such as vertical reinforcement ratios, aspect ratios and levels of axial stress, and then comparing calculated response reduction/modification factors for reinforced concrete shear walls with those