A Shear Strength Model for FRP-Strengthened RC Beams
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Published:2001
J.F. Chen, J.G. Teng, 2001. "A Shear Strength Model for FRP-Strengthened RC Beams", FRPRCS-5: Fibre-reinforced plastics for reinforced concrete structures Volume 1: Proceedings of the fifth international conference on fibre-reinforced plastics for reinforced concrete structures, Cambridge, UK, 16–18 July 2001, Chris J. Burgoyne
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Shear strengthening is often needed for reinforced concrete (RC) beams due to various reasons such as design and construction errors, environmental attacks and functional changes. The need for shear strengthening can also arise as a result of flexural strengthening. An attractive method for shear strengthening of RC beams is to externally bond fibre-reinforced polymer (FRP) composites to the sides of the beam. This paper is concerned with the development of a rational strength model for such shear-strengthened beams. Existing strength models are first reviewed and compared and their weaknesses discussed. A new model for the shear strength of RC beams bonded with FRP composites is then proposed, based on a careful interpretation of existing test results. The validity of this new model is demonstrated by a comparison of results from this new model and available test results.
INTRODUCTION
PREVIOUS RESEARCH ON SHEAR STRENGTH MODELS
A RATIONAL SHEAR STRENGTH MODEL
COMPARISON WITH EXPERIMENTAL OBSERVATIONS
SHEAR STRENGTHENING DESIGN
CONCLUSIONS
ACKNOWLEDGEMENTS
REFERENCES
