Techno Press

Steel and Composite Structures   Volume 26, Number 1, January10 2018, pages 67-78
Experimental and analytical behavior of stiffened angle joints
Peng Wang, Jianrong Pan (Corr. Author), Zhan Wang, Shizhe Chen

Abstract     [Full Text]
    The application of rib stiffeners is common on steel connections, with regard to the stiffened angle connection, experimental results about the influence of stiffeners under monotonic and cyclic loading are very limited. Consequently, this paper presents the experimental investigation on four types angle connections with or without stiffener under static loading and another four type stiffened angle connections subjected to cyclic loading. The static experimental result showed that the rib stiffener weld in tension zone of the connection greatly enhanced its initial rotational stiffness and flexural strength. While a stiffener was applied to the compression zone of the connection, it had not obvious influences on the initial rotational stiffness, but increased its flexural strength. The moment-rotation curves, skeleton curves, ductility, energy dissipation and rigidity were evaluated under cyclic loading. Stiffened top-and-seat angle connections behaved as semi-rigid and partial strength, and rotation of all stiffened angle connections exceeded 0.04rad. The failure modes between monotonic and cyclic loading test were completely different and indicated certain robustness.
Key Words
    steel frame; stiffened angle connections; semi-rigid joints; finite element method
Peng Wang, Jianrong Pan, Zhan Wang1, Shizhe Chen: School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510641, China

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