Seismic Analysis of High Rise Building by Using Response Spectrum Method

Abstract

Reinforced Concrete Frames are the most commonly adopted buildings construction practices in India. With growing economy, urbanization and unavailability of horizontal space increasing cost of land and need for agricultural land, high-rise sprawling structures have become highly preferable in Indian. With high-rise structures, not only the building has to take up gravity loads, but as well as lateral forces. Many important Indian cities fall under high risk seismic zones; hence strengthening of buildings for lateral forces is a prerequisite.   In this study the aim is to analyze the response of a high-rise building using Response Spectrum method. The Different models, which are G+ 15, G+ 20, and G+ 25, are considered for analysis. The modelling and analysis of the building has been done by using structure analysis tool ETABS 2016, to study the effect of varying height of the column in bottom storey at different position during the earthquake.  High-rise buildings are designed as per Earthquake code IS: 1893-2016 Earthquake causes different shaking intensities at different locations and the damage induced in buildings at these locations is also different. There is necessary to construct a structure which is earthquake resistance at a particular level of intensity of shaking a structure. The aim of present study is to compare seismic performance of high-rise structures situated in earthquake zone IV. All frames are designed under same gravity loading response spectrum method is used for seismic analysis. ETABS software is used and the results are compared.