Numerical Method of the Axial Force Moment Curvature on RC Section

Kai Cheng Yao; Dong Hua Zhou; Wen Yuan Liao; Long Qi Li; Guo Fei Li; Xu Yang Geng

doi:10.4028/www.scientific.net/AMM.610.35

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Numerical Method of the Axial Force Moment Curvature on RC Section

Abstract:

Based on the assumption of plane section, ideal elastic-plastic model of steel and the constitutive relations of concrete in Chinese Code for Design of Concrete Structures, numerical method is used to analyze the relationship of the axial force-moment-curvature on RC section. After dividing the normal section into strips, we adopt the secant stiffness iteration method (according to the results of each iteration, modify the secant stiffness through changing the elastic modulus of materials) to compile computer program. The results of the paper show a good agreement with those of the analytical method. Comparing with the analytical method, the numerical method of the paper can be wildly used in the application.