Concrete section analysis with China code and CEB model code

Analysis functions of reinforced concrete arbitrary cross-section are derived under the action of biaxial bending and compression. The derived tangent and secant stiffness of the section makes the concept clear, function simple and calculation convenient. The reinforced concrete cross-sections are analyzed with concrete constitutive relations of China code and CEB model code. The differences from analysis results are described and compared with experiment data. Analysis convergence steadily and quickly.