The Study on Neutral Axis of Concrete Filled Steel Tube Component with Round Section
The equation to determine the neutral axis of concrete filled steel tube(CFST) component with round section is presented in this paper. The geometric equation, physical equation and static equilibrium equation of CFST are analyzed to determine its section neutral axis. The compressed mechanical properties of CFST component are analyzed with the concrete material properties divided into tension and compression parts.Comparing the numerical results with the experimental results it can be verified that the equation to determine the neutral axis of CFST component with round section is useful to solve the problems that the tension and compression material properties of concrete are different.
X. Y. Yang et al., "The Study on Neutral Axis of Concrete Filled Steel Tube Component with Round Section", Applied Mechanics and Materials, Vols. 94-96, pp. 1115-1119, 2011