Performance Analysis of Reinforced Dog-Bone Connection in Steel Frame

Abstract:

Based on the concept of strong connection and weak member, mechanical behaviors of the new reinforced dog-bone connections are compared. To new reinforced dog-bone connections, weakening flange at a certain distance away from the beam end and increasing weld area in the beam end. This improved connection can make the plastic hinge be far from the beam-column connection with stronger bearing capacity and better ductility. A nonlinear finite element analysis of the three forms of connections such as dog-bone connection, cover-plate reinforced dog-bone connection, and flange reinforced dog-bone connection conducted by ABAQUS. The results demonstrate that the energy dissipative and ductile capacity of the new reinforced dog-bone connection is strengthened effectively because of the plastic hinge forming far from the beam-column connection, and the carrying capacity of the new reinforced dog-bone connections are greater than dog-bone connection. By contrast, flange reinforced dog-bone connection is exceed to cover-plate reinforced dog-bone connection, for that the strengthened flange can resist the bending resistance better.

• Periodical: Applied Mechanics and Materials (Volumes 501-504)
• Pages: 782-786
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.501-504.782
• Online since: January 2014
• Authors: Xiao Li, Jun Peng Li, Bin Li
• Keywords: Cover-Plate, Flange, Hysteretic Behavior, Nonlinear Finite Element Analysis, Reinforced Dog-Bone Connections

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