Experimental Behavior of Concrete Filled Steel Tube Columns

Abstract

Concrete filled tube composite columns provide an economic section and fast manufacturing. The concrete infill reduces the initial local buckling of the steel sections which allows very slender steel plates with high values for (width/thickness) ratio to be used in their fabrication. This paper investigates the local and post local buckling behavior of welded box section with and without concrete infill. Thirteen short columns of hollow and filled tube were tested in the concrete research laboratory at Housing and Building National Research Center