Comparison of Core Shear Wall Area to Floor Area Ratio for Reinforced Concrete Tall Buildings

Abstract

Today as yesterday, high-rise buildings are becoming widespread due to reasons such as the increase in the value of city lands, economic growth, population growth, and the need to build monumental structures that symbolize the power of large companies and states. Up to 40-story buildings, a core supported structure is suitable and also this system is one of the most used systems in Turkey for high rise buildings. Most of the lateral forces caused by earthquake and wind are carried by the core shear wall system located in the middle part of the plan of tall buildings. Today generally, the core placement area in high-rise buildings is determined according to architectural and mechanical needs like number of elevators, fire escapes, mechanical rooms, etc. In this study, it is aimed to obtain the effect of change on the ratio of the core shear wall placement area to the floor area for a constant usage of shear wall material. To this end, two numerical models have been developed. The only difference in these models was the core shear wall placement area to floor area ratio. Maximum and minimum values of story drifts, story shears, shear walls and columns performance levels and axial load ratios have been compared.