Study on Dynamic Behaviour of Shear walls with Staggered Openings in Irregular R.C. Framed Structures

In this paper, an attempt is made to discovering the behavior of shear wall with a different pattern of openings under earthquake loads. Many buildings now a day's have irregular arrangements, both in plan and elevation. That courses the structures with undesirable distributions in their stiffness of the building. These unpremeditated changes in structural stiffness are courses bad impact to the buildings. The reason behind the lack of the seismic behavior of the structure is the plan irregularity or vertical irregularity present in it. The shear walls are the best and simple methods to sustain these lateral forces. And they provide required strength against seismic forces. Sometimes a shear wall may include openings due to the functional needs such as doors and windows. This study is carried out on plan irregular structures with shear wall contain staggered and regular openings. Analysis has been done to estimate the behavior of plan irregular structures when introducing the different pattern of openings in shear walls, at an advantageous position. The parameters considered are storey displacement, storey drift, storey shear and stress distributions that concern with the pattern of the openings. The dynamic analysis is carried out with the help of ETABS v 15 by using response spectrum method.