Effect of Shape of Cross - section and Its Performance for Concrete Filled
نویسنده
چکیده
An attempt has been made to use this composite structural member as a column with a modification of flutes on the steel tube which enhances the aesthetics and development area of sheet by which the moment of inertia gets increased by about 17 to 40 % for rectangular flutes and 9 to 23 % for triangular flutes. Confining concrete by providing triangular and rectangular shape fluted steel tube has been investigated by a well planned experimental work on twenty six concrete filled steel fluted columns (CFSFC). The parameters chosen for the study are (i) Geometry of the specimen Triangular fluted columns (TFC) and rectangular fluted columns (RFC) (ii) Different L/D ratios (size of the columns) (iii) Longitudinal reinforcement. Three series of specimens having different L/D ratios, 2500mm long have been tested with M20 grade of self compacting concrete (SCC). It is observed that the load resistance is better in rectangular fluted columns as compared to the triangular fluted columns by 1.31 %, 1.05 % and 9.92% respectively for L/D ratio of 15, 20 and 25. The moment of inertia gets increased by about17% to 40% for RFC and 9% to 23% for TFC.
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