Abstract
Three-dimensional Cross-sectional joint element to consider discontinuous deformation around RC column base is proposed, and the influence of joint phase to member's response is numerically investigated using frame analysis. The joint element is obtained based on the fiber technique, by assuming that uni-axial stress along member's direction is prominent and plane on relative displacement remains plane. The proposed method is verified through comparison with uni-axis and multi-axes cyclic loading experiments, and multi-axes response at joint are discussed.