BEHAVIOR OF SELF COMPACTION CONCRETE FILLED STEEL TUBES (SCC FST) COLUMNS UNDER CYCLIC LOADING

Noorain khanum; E.Ramesh Babu; Dr N S kumar

Volume : VI, Issue : VIII, August - 2016

BEHAVIOR OF SELF COMPACTION CONCRETE FILLED STEEL TUBES (SCC FST) COLUMNS UNDER CYCLIC LOADING

Noorain Khanum, E. Ramesh Babu, Dr N S Kumar

Abstract :

In the present research, behavior of self–compacting Concrete Filled Steel Tube (CFST) under cyclic loading is investigated. The parameters chosen for the study are geometry of the specimen – circular section, different L/D ratios, and different grades of self–compaction concrete infill. The study includes experimental investigation on a total of 36 specimens that includes nine hollow and twenty seven specimens filled with SCC of grades M20, M30, and M40. The specimens include three L/D ratios [6, 12 and 16] and three diameters [33.7, 42.4 and 48.3mm] having a common thickness of 3.2mm. The experimental results indicate that the load carrying capacity of the hollow steel tubes is less than those filled with SCC, with increase in L/D ratio the load carrying capacity of the steel tube decreases, load carrying capacity increases with increase in the diameter of the steel tubes and for higher grade of concrete, the load carrying capacity of the CSFT is high. The experimental column strengths are compared with values predicted by AIJ (2011) and with the analytical results obtained by conducting linear analysis using Abaqus6.10–1 software.