ANALYSIS OF SEISMIC RESPONSE IN IRREGULAR RC STRUCTURES USING ETA

Abstract

Behavior of structure is dominated by structural configuration under earthquake motion. This presence of irregularity in structure either in plan or in vertical is a matter of concern. Structure is weakened by sudden-change in-vertical-or-plan-configuration. In general, structures possess combination of different irregularities. So accurate predictions can’t be made based on consideration of single irregularity. In order to reduce the hazardous-potential of these irregular structures, a detailed study has to be done-for the responses of these structures-towards-lateral loads. Present study is carried out for the-seismic-responses of reinforced concrete [RC] structure which are analyzed for different combination of irregularities. A ten storied building is modified to obtain irregular configuration. 30 irregular as well as regular configuration frames are to be analyzed for studying their effect. The analytical tool package used in this project is ETABS version-17 software. Result obtained is for parameters i.e. drift, storey displacement and base shear which are then compared for regular structure.