Shear strengthening of RC beams with web-bonded continuous steel plates |
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| Affiliation: | 1. Encotech Engineering Consultants, Inc., Austin, TX 78759, USA;2. Department of Civil and Env. Engineering, Saitama University, Saitama 338-8570, Japan;1. Structures Institute, National University of Tucumán, Av. Independencia 1800, 4000 S.M. de Tucumán, Argentina;2. CONICET, Av. Rivadavia 1917, Bs As, Argentina;1. Research Institute of Structural Engineering and Disaster Reduction, College of Civil Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, PR China;2. Department of Civil Engineering, University of Hong Kong, Pokfulam Road, Hong Kong, PR China;1. Department of Civil and Architectural Engineering, Qatar University, P.O. Box 2713, Doha, Qatar;2. Department of Civil and Architectural Engineering, College of Engineering, Qatar University, P. O. Box 2713, Doha, Qatar;3. Graduate School of Design and Architecture, Nagoya City University, P. O. Box 464-0083, Nagoya, Japan;1. Civil Engineering Department, Minia University, Minia, Egypt;2. State of Kuwait Ministry of Interior Kuwait, Kuwait;3. Civil Engineering Department, Beni-suef University, Egypt;4. School of Engineering, University of Liverpool, Liverpool, UK;5. Civil Engineering Department, Nahda University, Beni-suef, Egypt |
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| Abstract: | This paper presents the results of an experimental program and a parametric study conducted on RC beams strengthened in shear with web-bonded continuous steel plates. An experimental investigation was conducted to assess the effectiveness of web-bonded continuous steel plates for shear strengthening of RC beams having internal stirrups. A two-dimensional nonlinear finite element model was developed to simulate the overall behavior of beams with epoxy bonded steel plates. In order to develop a design methodology for beams with web-bonded steel plates, a parametric study was conducted. Main parameters considered were concrete strength, plate thickness, plate depth-to-beam depth ratio, yield strength of steel plates, beam size and the internal shear reinforcement ratio. A formula to compute the shear strength of such beams was proposed by adding up the concrete contribution, shear reinforcement contribution and the contribution of steel plates. The validity of proposed formula was checked against the results from parametric study and the experiments. It was found that the proposed formula predicts the ultimate shear strength of RC beams with web-bonded continuous steel plates very well. |
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