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Cyclic shear tests on RC precast beam-to-column connections retrofitted with a three-hinged steel device

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Abstract

Recent European earthquakes demonstrated that the seismic response of RC precast structures can be significantly influenced by the connection systems. Moreover, during past seismic events, many failures of the beam-to-column connections occurred due to their inadequate strength under seismic loads. The seismic safety of these connections has a crucial role in the overall seismic capacity of existing precast structures. A new connection system is employed as a retrofitting solution for a damaged beam-to-column connection and its cyclic shear performance is investigated by means of two cyclic shear tests on two different configurations. In both the experimental tests, the results demonstrate an efficient behavior of the retrofitted connections under horizontal cyclic loads. The comparison between the performance of the investigated connection and the response of a typical beam-to-column dowel connection allows to discuss the main critical features of the dowel connection system.

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Acknowledgements

This research was partially funded by the Italian Department of Civil Protection within the National project DPC-ReLUIS 2015 WP2 and by ASSOBETON (Italian Association of Precast Industries). The authors also acknowledge eng. Vittorio Capozzi for the collaboration during the tests and engs. Maria Gabriella Castellano and Danilo De Fusco (FIP Industriale S.P.A.) for the interesting comments.

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Authors and Affiliations

  1. Department of Structures for Engineering and Architecture, University of Naples Federico II, Via Claudio 21, 80125, Naples, Italy

    Gennaro Magliulo & Gaetano Manfredi

  2. Construction Technologies Institute URT Naples, National Research Council of Italy, DiSt, University of Naples Federico II, Via Claudio 21, 80125, Naples, Italy

    Maddalena Cimmino

  3. Department of Engineering Science, University of Greenwich, Medway Campus, P342 Central Avenue - ME4 4TB, Chatham, UK

    Marianna Ercolino

Authors
  1. Gennaro Magliulo
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  2. Maddalena Cimmino
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  3. Marianna Ercolino
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  4. Gaetano Manfredi
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Correspondence to Gennaro Magliulo.

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Magliulo, G., Cimmino, M., Ercolino, M. et al. Cyclic shear tests on RC precast beam-to-column connections retrofitted with a three-hinged steel device. Bull Earthquake Eng 15, 3797–3817 (2017). https://doi.org/10.1007/s10518-017-0114-x

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  • DOI: https://doi.org/10.1007/s10518-017-0114-x

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