ANALYSIS OF AERODYNAMIC MODIFICATION OF THE SHAPE OF THE TALL STRUCTURE

STRUCTURE

The structures that are man-made are bluff- bodies. During the structural analysis of a tall building, its stability under wind forces is of a major concern. Being a bluff body, the aerodynamic study plays a critical role in the determination of the principal response of a high- rise building to wind forces. Wind action can reduce the proceeding of the whole structure .because tall structures are in a continuous motion during wind circumstance hence ,it is essential for structural engineers to develop a system ,which can increase modal mass to reduced wind induced motion. Now a days it is observed that urbanization area is abruptly increases, with increment in population. Hence, the land requirements are increases day by day to fulfillment the needs of residents. To fulfill the need, now a days in metro city multistory buildings are constructed. And it was observed that during structural analysis that wind action is play a very important role in the stability of tall buildings. In present study an attempt has been made to minimize the impact of wind on tall buildings. The aerodynamics action will highly influences the high rise buildings. Because high rise buildings is continuous in motion during wind action and causes instability to building structures, which can causes hazardous impact to health as well as wealth. In present study to minimize this impact, modification of aerodynamics action has been taken to reduced the impact of wind action on tall buildings. For this purpose fours cases has been studied, in which four different type of structural design which include cross sectional shape, corner geometry, sculptured buildings tops and vertical opening of buildings has been taken and studied against the wind action.

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