• CHITALKAR SHANKAR GORAKSH
• dr. v r rathi
• Dr.P.K.Kolase

The concrete-filled steel tube (CFST) Structure offer numerous structural benefits, including high strength and fire resistance, favourable ductility and large energy absorption capacities. There is also no need for use of shuttering during concrete construction; hence, the construction cost and time are reduced. These advantage have been widely exploited and have led to extensive use of concrete filled tabular structure in civil engineering .some code of practice and local specification were developed to provide design guidance an experimental study on the behavior of concrete filled steel tubular columns (CEST) axially loaded in compression to failure. A Total 48 Specimens (24circular and 24 square) with difference in concrete grade of M20, M30 and M40 with and without shear connector (SC) were tested to investigate the load capacity and Connection under reversed Cyclic Loading. The chosen shear connector is of nominal diameter 6 mm and a length of 60mm. The results show that the use of high strength infill concrete is much more effective to get extra strength with same size of CFST column and use of shear connector increases the strength of column with the same size of column dimensions give a D/T ratio 19.33(circular) and 16.66(square) to avoid local buckling effect.24 specimens of the concrete filled columns are provided with shear connectors. High strength bolts (10.9) with smooth shank were used as shear connector.

Concrete filled Steel tube, shear connector, shear bearing capacity, reversed cyclic loading, and axial compression test.

"Bi-AXIAL LOAD CAPABILITY OF CFST COLUMNS WITH AND WITHOUT SHEAR CONNECTORS UNDER CYCLIC LOADING", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.512-525, June 2019, Available :http://www.jetir.org/papers/JETIR1906O73.pdf

"Bi-AXIAL LOAD CAPABILITY OF CFST COLUMNS WITH AND WITHOUT SHEAR CONNECTORS UNDER CYCLIC LOADING", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp512-525, June 2019, Available at : http://www.jetir.org/papers/JETIR1906O73.pdf