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Structural Engineering and Mechanics
  Volume 41, Number 3, February10 2012, pages 407-420
DOI: http://dx.doi.org/10.12989/sem.2012.41.3.407
 


Effect of anchorage and strength of stirrups on shear behavior of high-strength concrete beams
Jun-Mo Yang, Kyung-Hwan Min and Young-Soo Yoon

 
Abstract
    This study investigated possible ways to replace conventional stirrups used on high-strength concrete members with improved reinforcing materials. Headed bar and high-strength steel were chosen to substitute for conventional stirrups, and an experimental comparison between the shear behavior of highstrength concrete large beams reinforced with conventional stirrups and the chosen stirrup substitutes was made. Test results indicated that the headed bar and the high-strength steel led to a significant reserve of shear strength and a good redistribution of shear between stirrups after shear cracking. This is due to the headed bar providing excellent end anchorage and the high-strength steel successfully resisting higher and sudden shear transmission from the concrete to the shear reinforcement. Experimental results presented in this paper were also compared with various prediction models for shear strength of concrete members.
 
Key Words
    shear; high-strength concrete; headed bar; high-strength steel; anchorage
 
Address
Jun-Mo Yang: Steel Structure Research Division, Research Institute of Industrial Science & Technology, Incheon, Korea
Kyung-Hwan Min and Young-Soo Yoon: School of Civil, Environmental and Architectural Engineering, Korea University, Seoul, Korea
 

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