Comparative Study On Seismic Analysis Of Multistory Building With CSFT Columns And RCC Columns


Dept. Of Civil Engineering, Bhilai Institute of Technology, Durg, India.


RCC and steel frames have been the most common frame systems for long times whereas composite frame system has also emerged as popular system for high rise buildings for few decades. Multi-story composite frames are generally composed of structural steel members made composite with concrete. Concrete-filled steel tubular (CFST) members have been widely used in buildings and bridges to utilize the benefits of both concrete and steel materials. In CFST members, steel provides confinement to the concrete to increase the strength and ductility, whereas concrete delays the local buckling of the steel tube to increase the load-carrying capacity Their usage as columns in high-rise and multi-story buildings, as beams in low-rise industrial buildings and as arch bridges, has become extensive in many countries in last four decades with abundant examples. But, their usage in India is a new concept. Hence, in this present study G+10 multi-storied building composed of RCC columns and CFST columns are analyzed by using ETABS software. In this study comparison has been made to study the variation in storey drift, storey shear, time period and the displacement of the building with RCC and composite columns.