Performance Evaluation of RC Building Subjected to Repeated Earthquake Load

Abstract

This study evaluates the performance of an RC frame structure using nonlinear static and nonlinear dynamic analysis procedures. To achieve this objective, five-moment resisting frames with 4,8,12,16,20 storied buildings were analyzed and designed following the guidelines of the seismic codes was subjected to single, double, and triple earthquake events, that is, repeated earthquakes. The assessment of the structure in terms of the failure of members and the performance of the structure in terms of displacement and ductility was measured for different earthquake events, which was then converted into a multiplying factor. These seismic performance factors were used to increase the strength and stiffness of the structures at various locations. These factors were used for the design of an earthquake force-resisting system in a new building. In this study, the performance of a building subjected to a maximum considered earthquake (MCE) and for a repeated earthquake is checked and applied to the revised design procedure of the structure. By considering different performance points of the structure when subjected to repeated earthquakes, a new design philosophy was introduced. The building was designed using this new philosophy, and the structural stability of the structure was verified by applying repeated earthquakes.