Shear Behavior of Reinforced Concrete Beams with High-Strength Stirrups

Journal of South China University of Technology (Natural Science Edition) ›› 2009, Vol. 37 ›› Issue (8): 89-93.

• Architecture & Civil Engineering • Previous Articles Next Articles

Shear Behavior of Reinforced Concrete Beams with High-Strength Stirrups

Li Yan-yan¹ Rong Xian¹ Pi Feng-mei² Qiao Jin-li¹

1. School of Civil Engineering, Hebei University of Technology, Tianjin 300130, China; 2. Institute of Architecture Civil Engineering, Langfang Teachers College, Langfang 065000, Hebei, China

Received:2008-10-13 Revised:2009-01-14 Online:2009-08-25 Published:2009-08-25
Contact: 李艳艳（1979-），女，博士，讲师，主要从事混凝土结构设计理论的研究． E-mail:nicole820@163.com
About author:李艳艳（1979-），女，博士，讲师，主要从事混凝土结构设计理论的研究．
Supported by:
国家“863”高技术计划资助项目（2004AA33G050）;河北省自然科学基金资助项目（E2007000064）

Abstract

Abstract:

Twelve reinforced concrete （RC） beams with 500 MPa steel bars as the stirrups were tested to investigate the shear behavior respectively under concentrated and uniformly-distributed loads, and the shear capacity of the diagonal section and the diagonal crack width of the beams in the service stage were analyzed. Experimental results show that （ 1 ） the RC beams with high-strength stirrups are similar to those with conventional stirrups in terms of mechanical behavior, and that the shear capacity of the diagonal section can still be calculated according to GB50010--2002; （2） although the reliability of the formula presented in Chinese codes is lower than those foreign codes＇, it is strong enough for safety; （3） the tensile stress of stirrup across the diagonal crack can reach the yield point; and （4） the designed yield strength of stirrup should not exceed 360 MPa for the purpose of meeting the requirement for the maximum diagonal crack width of RC beams in the service stage.

Key words: concrete beam, high-strength stirrup, shear capacity, diagonal crack width

Li Yan-yan Rong Xian Pi Feng-mei Qiao Jin-li. Shear Behavior of Reinforced Concrete Beams with High-Strength Stirrups[J]. Journal of South China University of Technology (Natural Science Edition), 2009, 37(8): 89-93.

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Shear Behavior of Reinforced Concrete Beams with High-Strength Stirrups

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