SEISMIC PERFORMANCE OF A REINFORCED CONCRETE MULTI-STOREY BUILDING HAVING CIRCULAR SHEAR WALL AND SQUARE SHEAR WALL AT CORE OF THE BUILDING

The shear walls and core walls are frequently used horizontal load opposing components in mid-rise to high-rise reinforced concrete buildings. The Placing of these walls plays an essential part in structural performance against horizontal loads. By engineering point of view, minimum movement and high absorbent of energy are specified as a critical reason to decide shape and place of shear walls. Round sections are safer contrasted with square sections, because the execution of round section is same in all directions but square portions are intended for two principal headings against seismic loads and their execution is not clear in different directions. The present study focuses on the evaluation of the seismic execution of reinforced concrete buildings with circular core wall and square core wall according to Indian Codes (IS 1893:2002). For this analysis, five square building with 20 stories having circular core wall and rectangular core wall and one circular building with 20 stories having circular core wall is considered. By response spectrum and time history analysis the dynamic behavior of the structure has been found. All the analysis was performed in ETABS software, from the analysis results a study of storey deflection, storey drift and base shear have been made.