Performance of Flag Wall on High-rise RCC

Building with Vertical Irregularity

Abstract

Development in High rise building in our country can be seen due to rapid increase in urbanization. Tall buildings are difficult to design. As height of building increases, the stiffness of building decreases. Tall buildings are subjected to lateral loads like earthquake and wind. So, it is important to have outrigger systems that reduces the effect of lateral loads on High rise buildings. Although conventional outrigger systems can be used, but virtual outriggers like flag walls can be used and some short comings of outrigger systems can be overcome. The present study includes analyzing of a 40 storey RCC building using response spectrum method for building located in zone-III. The shape of building is with vertical irregularities with Flag walls at different levels. The building is analyzed and compared for different combinations of flag wall and core. The results included parameters like time period, top storey displacement, storey drift and storeys hear.