INFLUENCE OF LATERAL LOADS ON TALL REINFORCED CONCRETE STRUCTURES

Abstract

The high-rise structure construction has become a feasible solution to the issues related with the urban society. It is very essential to consider the effects of lateral loads induced from wind and earthquakes in the analysis of reinforced concrete structures, especially for high-rise buildings. Effect of wind is predominant on tall structures depending on location of the structure, height of the structure and wind speed. Wind loads as specified in IS: 875 (Part 3)-2015 are considered in this analysis. In this project, multi-storey (G+19) structure with different shapes is modelled in the ETABS 2018 software. The severity of wind load on different structures in various wind zones and in different terrain category is studied. The effect of variation in terrain category is the major factor in this work because as the height increases the wind speed increases and thus the displacement increases but as the terrain category varies the obstruction for the wind flow increases so the effect of wind force decreases on the particular high rise structures, when the wind load is applied. Storey drift, storey displacement and base shear are analysed for various wind load cases and the main aim of this study is to obtain the best suitable structural shape for stability in wind prone area.