To study dynamic analysis of high-rise RCC building with and without viscous damper and bracing

Abstract

Now a days, demand for construction of high-rise building increases day by day due to rapid urbanization and shortage of land in urban areas. For tall building there is always need of proper structural system to transfer lateral loads. There are numbers of structural system available which usually used for stabilization of high rise building some of them are as follow: outrigger system, tube system, bundled tube system, core shear wall system, bracing system, fluid viscous damper system etc. Among them lateral bracing system frequently used for structures up to 30 to 40 story building in order to increase its lateral strength and stiffness to fulfill serviceability and design criteria. Dampers are used in the buildings to control vibrations due to lateral loads like earthquakes. Different types of dampers such as viscous damper, friction damper, tuned mass damper, hybrid damper, etc. have gained importance in the recent past in mitigating the undesirable effects of earthquakes. Also bracing system improves the displacement capacity of building. Mainly there are two types of bracing concentric bracing and eccentric bracing. Concentric bracing can be in various shape such as X-bracing, V-bracing and inverted V bracing. Hence, there is need to study the seismic behavior of high rise building with combination of both method bracing and fluid viscous damper in order to increase lateral strength and reduce lateral deflection and finding out optimum positions for better results.