ANALYSIS AND DESIGN OF SKYSCRAPER BUILDING OF G+60 STOREYS IN ALL SEISMIC ZONES BY USING ETABS SOFTWARE

Abstract

The term "skyscraper" was first applied to buildings of steel framed construction of at least 10 storeys in the late 19th century, a result of public amazement at the tall buildings being built in major cities like Chicago, New York City, Tokyo, Beijing, etc. The structural definition of the word skyscraper was refined later by architectural historians, based on engineering developments of the 1880s that had enabled construction of tall multi-Storey buildings. This definition was based on the steel skeleton as opposed to constructions of loadbearing masonry, which passed their practical limit in 1891 with Chicago's Monad Nock Building. The design and construction of skyscrapers involves creating safe, habitable spaces in very tall buildings. The buildings must support their weight, resist wind and earthquakes, and protect occupants from fire. Yet they must also be conveniently accessible, even on the upper floors, and provide utilities and a comfortable climate for the occupants. The problems posed in skyscraper design are considered among the most complex encountered given the balances required between economics, engineering, and construction management. The objectives of the present work is to study the behavior of a Skyscraper Building subjected to earth quake load by adopting Response spectrum analysis. The present study is limited to Reinforced concrete (RC) multi-storied Skyscraper building with four different zones II, III, IV & V .The analysis is carried out with the help of FEM software’s ETABS V 9.7.4. The building model in the study has G+60 (61) storeys with constant storey height of 3m. Four models are used to analyze with different bay lengths and the number of Bays and the bay-width along two horizontal directions are kept constant in each model for convenience.