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首页> 美国政府科技报告 >Tangent Stiffness Method for Biaxial Bending of Reinforced Concrete Columns.
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Tangent Stiffness Method for Biaxial Bending of Reinforced Concrete Columns.

机译：钢筋混凝土柱双轴弯曲的切线刚度法。

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Analytical formulations and procedures are developed for computing moment-thrust-curvature relations for reinforced concrete column sections in biaxial bending. The cross section is partitioned by a rectangular grid into a large number of small elemental areas of steel and concrete. The moment-thrust-curvature relations are obtained by step-by-step application of the analytically developed linear force-deformation equation using the tangent stiffness iterative procedure. The method is found to be extremely powerful and efficient for computer solution. Numerical results are obtained for two types of loading paths:given path of loading;and given mixed path of loading and deformation. Results are presented in the form of moment-curvature-thrust curves and interaction curves relating axial compression and biaxial bending moments. The important factors influencing the behavior of these curves are discussed such as strength of materials,percentage of reinforcement and the magnitude of compression force. Simple analytical expressions to approximate the interaction curves of square sections are obtained. (Author)

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