Analytical Study On Horizontal Irregularities In Building Under Seismic Loads With And Without Shear Wall

Abstract

Majority of buildings collapse under the action of dynamic loads which includes earthquake and wind loads. The greatest challenge to any structural engineer in present scenario is designing of seismic resistant irregular structures. Irregular buildings are those devoid of symmetry with discontinuity in geometry, mass or load resisting elements. Irregularities in construction of buildings are unavoidable and they constitute a large portion of modern urban infrastructure. In this present study, the behavior of three G+10 storied buildings with differing plans have been considered; one square shaped regular model and other two H shaped and hexagonal shaped models with horizontal irregularities. The total built-up area is 605.10 m2. All the models are located in Bangalore region with a seismic Zone factor 0.1(zone –II). Analysis of all the models was carried out using ETABS 2016.0.3 software. Linear static analysis method was used for the study of different parameters like storey drift, storey displacement, storey shear, shear force and bending moment with and without shear wall. Comparison between three models with these parameters were done and it was found that the H-shaped model with shear wall gave better resistant to seismic load compared to other models and hence was chosen as the best frame.