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Steel and Composite Structures Volume 18, Number 5, May 2015 , pages 1145-1160 DOI: https://doi.org/10.12989/scs.2015.18.5.1145 |
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Steel-CFRP composite and their shear response as vertical stirrup in beams |
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Faris A. Uriayer and Mehtab Alam
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| Abstract | ||
| An experimental study was conducted for the effectiveness of steel-CFRP composite (CFRP laminates sandwiched between two steel strips) as stirrups in concrete beam to carry shearing force and comparison was made with conventional steel bar stirrups. A total numbers of 8 concrete beams were tested under four point loads. Each beam measured 1,600 mm long, 160 mm width and 240 mm depth. The beams were composed of same grade of concrete, with same amount of flexural steel but different shear reinforcements. The main variables include, type of stirrups (shape of stirrups and number of CFRP layers used in each stirrup) and number of stirrups used in shear spans. After getting on an excellent closeness between the values of ultimate shear resistance and ultimate tensile load of steel-CFRP stirrups, it could be concluded that the steel-CFRP stirrups represent the effective solution of premature failure of FRP stirrups at the bends. | ||
| Key Words | ||
| steel-CFRP composite; stirrups; concrete beams; shear span; good approach | ||
| Address | ||
| (1) Faris A. Uriayer: Department of Civil Engineering, Jamia Millia Islamia, New Delhi, India on leave from Kufa University, Iraq; (2) Mehtab Alam: Department of Civil Engineering, Faculty of Engineering and Technology, Jamia Millia Islamia, New Delhi, India. | ||