摘要：This paper proposes a simplified multi-linear model of a shear force-deformation relationship for concrete-filled square steel tube short to slender beam-columns. To evaluate the behavior of short to slender beam-columns with a single model, the column member is divided into elasto-plastic part and an elastic part. For the elasto-plastic part, the deformation at each point is calculated based on the bending moment-curvature relation model proposed by the author and by employing a newly proposed evaluation formula for curvature magnification. Predictions from the model are found to agree approximately with the experimental results up to large deformations.
