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Structural Engineering and Mechanics Volume 62, Number 4, May25 2017 , pages 443-453 DOI: https://doi.org/10.12989/sem.2017.62.4.443 |
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A piecewise linear transverse shear transfer model for bolted side-plated beams |
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Ling-Zhi Li, Chang-Jiu Jiang, Ray Kai-Leung Su and Sai-Huen Lo
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| Abstract | ||
| The performance of bolted side-plated (BSP) beams is affected by the degree of transverse partial interaction, which is a result of the interfacial slip caused by transverse shear transfer between the bolted steel plates and the reinforced concrete beams. However, explicit formulae for the transverse shear transfer profile have yet to be derived. In this paper, a simplified piecewise linear shear transfer model was proposed based on force superposition principle and simplification of shear transfer profiles derived from a previous numerical study. The magnitude of shear transfer was determined by force equilibrium and displacement compatibility condition. A set of design formulae for BSP beams under several basic load cases was also derived. Then the model was verified by test results. A worked example was also provided to illustrate the application of the proposed design formulae. This paper sheds some light on the shear force transfer mechanism of anchor bolts in BSP beams, and offers a practical method to evaluate the influence of transverse partial interaction in strengthening design. | ||
| Key Words | ||
| reinforced concrete beam; strengthening; bolted side-plated beam; curvature factor; transverse partial interaction; transverse slip; transverse shear transfer; piecewise linear | ||
| Address | ||
| Ling-Zhi Li, Chang-Jiu Jiang: Research Institute of Structural Engineering and Disaster Reduction, College of Civil Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China Ray Kai-Leung Su, Sai-Huen Lo: Department of Civil Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong | ||