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Updated: Jun 17, 2025

Preparation of Aligned Steel Fiber Reinforced Cementitious Composite and Its Flexural Behavior
Published on: June 27, 2018
Non-linear finite element analysis of SFRC beam-column joints under cyclic loading: enhancing ductility and
Umar Ahmad Noor1, Muneeb Ahmed Jadoon1, Kennedy Onyelowe2,3
1Department of Civil Engineering, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, Pakistan.
Steel fiber reinforced concrete (SFRC) in beam-column joints enhances seismic performance by promoting ductile shear failure and increasing toughness. This study confirms SFRC
Area of Science:
- Structural Engineering
- Materials Science
- Civil Engineering
Background:
- Beam-column joints are critical structural elements susceptible to brittle shear failure, particularly during seismic events.
- Traditional reinforcement methods in joints can lead to construction complexities and congestion.
- Steel fiber reinforced concrete (SFRC) offers a potential solution to enhance joint ductility and simplify construction.
Purpose of the Study:
- To investigate the effectiveness of SFRC in the joint core for improving seismic performance of beam-column joints.
- To analyze the influence of steel fiber characteristics (volume fraction, aspect ratio) on joint behavior.
- To evaluate the potential of SFRC to mitigate brittle shear failure and enhance ductility.
Main Methods:
- Non-linear finite element analysis (NLFEA) was employed using ABAQUS software.
- Ten simulated SFRC beam-column joint specimens were analyzed under cyclic loading.
- Parametric studies were conducted varying steel fiber volume fraction and aspect ratio.
Main Results:
- A 2% steel fiber volume fraction in the joint core significantly improved post-cracking behavior and promoted ductile shear failure.
- Increased steel fiber content led to higher peak-to-peak stiffness and enhanced joint toughness.
- Long and thin steel fibers effectively bridged cracks, delaying propagation, though aspect ratio had minimal impact on load capacity.
Conclusions:
- Strategic incorporation of SFRC in beam-column joint cores promotes ductile shear failure and enhances seismic resilience.
- SFRC can simplify construction by reducing the need for congested reinforcement hoops.
- The developed NLFEA model is a valuable tool for designing and analyzing SFRC beam-column joints under cyclic loading.
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