Abstract
An industrial research project was launched in 2007 at École Polytechnique de Montréal to develop a new generation of precast bridge parapets using nonlinear finite element calculations. The paper presents the design of a hybrid precast parapet made with ultra-high performance fiber reinforced concretes (UHPFRC) and its experimental validation. The hybrid parapet consisted of a thin shell of UHPFRC paired with a normal strength concrete core. The outstanding properties of the UHPFRC permitted the removal of all conventional reinforcement while keeping the cast-on-site parapet thickness. A new anchorage system was optimized for parapet installation on a new bridge deck. Quasi-static tests, and dynamic tests replicating 4 levels of vehicle impacts, were conducted on full-scale parapets. Test results showed that the load-carry capacity of the hybrid UHPFRC parapet exceed the PL-2 or TL-4 parapet specifications of CSA and AASHTO. Moreover it offers a strength level equivalent to standard cast-on-site constructions.
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© 2012 Springer-Verlag Berlin Heidelberg
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Charron, J.P., Duchesneau, F., Massicotte, B. (2012). Static and Dynamic Behavior of Hybrid Precast Bridge Parapet Made of Ultra-High Performance Fiber Reinforced Concrete. In: Parra-Montesinos, G.J., Reinhardt, H.W., Naaman, A.E. (eds) High Performance Fiber Reinforced Cement Composites 6. RILEM State of the Art Reports, vol 2. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-2436-5_49
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DOI: https://doi.org/10.1007/978-94-007-2436-5_49
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-007-2435-8
Online ISBN: 978-94-007-2436-5
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