EFFECT OF SHEAR WALL LOCATION ON SEISMIC RESPONSE OF MEDIUM RISE BUILDINGS

Abstract

High rise buildings have become one of the impressive reflections of today's civilization. There are three major factors to consider in the design of such structure: strength, rigidity, stability. The strength requirement is the dominant factor in the design of low-height structure. However as the height increases, the rigidity and stability requirements become more important and they are often the dominant factors in the design. There are basically two ways to satisfy this requirement in a structure. The first is to increase the size of members beyond and above the strength requirement. However this approach has its own limits, beyond which it becomes either impractical or uneconomical to increase the sizes. The second and more elegant approach is to change the form of the structure into something more rigid and stable to keep the deformation in check and increase stability. Wall-frame system is one such and most commonly used building system. Appropriate placement of shear wall further enhances the performance of building.. In the present study, an effort has been made to find effective location of shear wall in a given building plan in Z-direction. This can be obtained by comparing various parameters like inter-storey drift (ISD), total drift, Lateral forces resisted by Frame, percentage of longitudinal reinforcement required etc. A comparison is also made between total quantity of steel and concrete. And finally effective location of shear wall is suggested. A height wise variation of shear wall is also done.