Effect of Wind Forces on Various Types of Structural Plan Configurations in Case of RCC Building Structures – A Comparative Study

Abstract

Earlier in 19th century, there were no structures as tall buildings but with the technological advancement and rise in urbanization, there was a need for vertical expansion of cities. During that era, for design purpose, only vertical/gravity loads on buildings were to be considered but with increase in slenderness/height of buildings, lateral loads on structures i.e. wind loads and earthquake loads came into pictures which are more predominant. In 1930’s many high rise buildings were constructed across the world. It was a period of great prosperity for high rise buildings as extensive research work was carried out on wind induced effects on high rise buildings. Unlike the mean flow of wind, which can be considered as static, wind loads associated with gustiness or turbulence rapidly and even abruptly, creating effects much larger than if the same loads were applied gradually. Wind loads, therefore, need to be studied as if they were dynamic in nature. This project work mainly concentrates on wind induced pressures which would be arises due to wind intensity and how pressure varies according to different shapes of buildings, finding out the wind response by using the dynamic analysis method provided in IS code.