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Seismic Resistance of Steel Fiber Reinforced Concrete Beam-Column Joints

by Ziad Bayasi, San Diego State Univ, San Diego California, United States,
Jing Zhou, San Diego State Univ, San Diego California, United States,



Document Type: Proceeding Paper

Part of: Structural Engineering in Natural Hazards Mitigation

Abstract:

This paper discusses the advantages of using steel fibers in seismic resistant beam-column connections. First, the effects of fibers on the various aspects of behavior of concrete are outlined. Emphasis is made on the properties that mostly pertain to joint behavior under earthquake loading including bond of deformed fibers to concrete, shear resistance, dowel action and tensile stress-strain behavior. The effect of steel fibers on the hysteretic behavior of joints is then studied. It is concluded that steel fibers can enhance energy absorption capacity and damage tolerance of seismic resistant joints. Additionally, steel fibers reduce steel bar congestion at joints by reducing the required amount of transverse reinforcement. Furthermore, the cost of a steel fiber concrete joint is significantly less than the cost of a comparable conventional joint.

Subject Headings: Steel fibers | Fiber reinforced concrete | Joints | Seismic tests | Seismic effects | Load and resistance factor design | Steel columns

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