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Experimental Investigation on The Transform The Simply Supported Girders to Continuous Girder by Using The UHPC Cast in Place Joint

  • Structural Engineering
  • Published:
KSCE Journal of Civil Engineering Aims and scope

Abstract

Many bridges are made from multi-simple spans and can be enhanced by transforming into a continuous girder. An experimental program investigated the transformation of the simply supported girder to a continuous girder using the ultra-high performance concrete (UHPC) joint. The transformation process was presented by arranging a negative reinforcement and cast in place the deck with joints to ensure the continuity of the segment through the interior support. This study presents the material properties, preparation of specimens, the cast of normal strength concrete (NSC) and UHPC, and tested the girder with a point load. The parameters of this study included the support condition, type of joint, hybridization of top reinforcement, and type of load (monotonic and cyclic load). The results showed that the continuous support increased the load-carrying capacity by about 21.4% and reduced the service mid-span deflection by about 24.3% concerning simply supported having the same clear span and section geometry. The effect of using the shear key and carbon fiber reinforced polymer CFRP rebar was presented. This study discussed failure mode, cracking propagation, initial stiffness, and flexural ductility to understand the structural behavior of continuous splice girder. As a result of these investigations, suggestions were identified for future research.

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Acknowledgments

In this research, I would like to thank the University of Babylon / College of Engineering / Department of Civil Engineering / Structural Laboratory for contributing to facilitating the examinations for this study. I also extend my sincere thanks and gratitude to everyone who supported this research, including friends, engineers and family.

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Correspondence to Mustafa Kareem Moosa.

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Moosa, M.K., Ali, A.Y. Experimental Investigation on The Transform The Simply Supported Girders to Continuous Girder by Using The UHPC Cast in Place Joint. KSCE J Civ Eng 27, 1697–1707 (2023). https://doi.org/10.1007/s12205-023-0775-8

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  • DOI: https://doi.org/10.1007/s12205-023-0775-8

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