Year: 2024
Type: conference-paper
Abstract: The fatigue behavior of UHPFRC in the range of high number of fatigue cycles is relevant for fatigue-prone elements of structures like bridges. Experimental and analytical research, conducted over the last 15 years by the authors and their team, on the fatigue behavior of UHPFRC, R-UHPFRC and composite elements consisting of R-UHPFRC and reinforced concrete are summarized in view of implementation for fatigue design. The existence of a fatigue endurance limit was evident at stress levels due to maximum fatigue loading corresponding to 40 to 60 % of the ultimate resistance. Subseqeunetly, fatigue design provisions are deduced and proposed for the fatigue strengthening of reinforced concrete bridge deck slabs by means of a layer of R-UHPFRC as well as for the fatigue dimensioning of R-UHPFRC structural elements. The application of these fatigue design provisions is illustrated by means of two realized UHPFRC bridge projects.
Authors: Brühwiler, Eugen, Zhan, Jian
Institutions: École Polytechnique Fédérale de Lausanne, McGill University
Language: English
Subfield: Civil and Structural Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W6967234714
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