Simplified Buckling Strength Formula of Axially-Loaded Concrete Filled Steel Tubular Columns

Abstract

A simplified method for determining the buckling strength of axially -loaded concrete filled steel tubular columns is discussed and a design equation was derived and developed. It is based on the mathematical equation that was developed by Rondal - Maquoi, was used to represent SSRC multiple-column curve (The Structural Stability Research Council, 1976). The general validity of this approximate approach is demonstrated by comparison with both computed exact collapse loads or experimental column tests.