DYNAMIC WIND ANALYSIS FOR HIGHRISE BUILDING – TYPICAL OBSERVATIONS

Abstract

In the high rise building, wind is critical load and needs to be considered for safety and serviceability of structures. There is also need to understand critical effects and assess dynamic behaviour of structures as per the provisions of established standards. The Indian standard IS 875(part 3) is revised in 2015, many modifications are carried out in sections related to dynamic wind effects, very few research papers are available in relevance to these effects. Thus there is great need to understand dynamic wind effects in high rise structures, and prepare database for various sub sections and quantities mentioned in the standard. In this paper, along wind effect on both directions i.e. along shorter as well as longer direction located in category IV having varying base dimensions with same width along shorter direction with varying height of building from 42 to 60 m have been computed as per Indian Standard code IS 875(part 3): 2015 by the Gust Factor Method by developing excel sheets. Base dimension plays critical role, with the increase in dimension in the direction of wind, the response of building reduces.