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2019 | OriginalPaper | Buchkapitel

Probabilistic Thickness Requirement of CFRP Plates Bonded to Reinforced Concrete Bridge Decks

verfasst von : A. Ahmed, J. M. Kaura, O. S. Abejide

Erschienen in: Advances and Challenges in Structural Engineering

Verlag: Springer International Publishing

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Abstract

Probabilistic reinforced concrete bridge deck flexural strengthening with Carbon Fibre Reinforced Polymer (CFRP) laminates is presented. Results show that the existing and evaluated deck is in conformity with AASHTO LRFD (2010) specifications and indicate that the composite concrete deck as suggested in formulations meet the requirements for bridge decks and have the ability to sustain more live loads up to about 90% than conventional reinforced concrete decks of the same structural formulations. Also, the initial safety indices observable prove to be traffic dependent as it depends more on the live load. AASHTO design equation that corresponds to a βtarget = 3.5 seems to be overestimated for strengthening purposes. The strengthening with a βtarget = 4.2 as suggested herein provides a better structural reliability than βtarget of 3.5 proposed by AASHTO LRFD (2010) provision and with no significant differences in bonded CFRP amounts required. The optimum thickness of bonded CFRP laminates required is found to be 5 mm for the upgrading of reinforced concrete bridge decks.

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Metadaten
Titel
Probabilistic Thickness Requirement of CFRP Plates Bonded to Reinforced Concrete Bridge Decks
verfasst von
A. Ahmed
J. M. Kaura
O. S. Abejide
Copyright-Jahr
2019
DOI
https://doi.org/10.1007/978-3-030-01932-7_31