PSI - Issue 84

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ScienceDirect

Procedia Structural Integrity 84 (2026) 1087–1094

© 2026 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Abstract Many existing reinforced concrete solid slab bridges are not straight but use a skew angle as an efficient way to cross the underlying object. This skew angle is known to influence the flow of stresses, resulting in a large concentration of shear stresses in the obtuse corner. Recently, an experimental program has been conducted at Delft University of Technology to investigate the maximum load and failure mode of skewed reinforced concrete slabs tested under a concentrated load at the shear-critical location. To further study the experimental results, this paper focuses on calculation methods for the shear capacity of skewed slabs without shear reinforcement, in particular using the shear provisions from the recently revised Eurocode 2 and linear finite element models. Based on these analyses, practical recommendations are given for the design and assessment of skewed slab bridges. Ultimately, these insights contribute to better estimates of the capacity of skewed concrete slabs failing in shear, which may be considered a challenging case for predictions. III Fabre Conference: Existing Bridges, Viaducts, and Tunnels: Research, Innovation, and Applications Shear capacity of skewed reinforced concrete slabs: a comparison between experiments and the new Eurocode 2 Alessandro Lipari a, *, Eva Lantsoght b,c a ENEA Italian National Agency for New Technologies, Energy and Sustainable Economic Development, SS7 Via Appia km 706, Brindisi, Italy b Universidad San Francisco de Quito, Diego de Robles y Pampite, Sector Cumbaya, Quito, EC 170157, Ecuador c Delft University of Technology, Stevinweg 1, 2628 CN Delft, the Netherlands

Peer-review under responsibility of the scientific committee of the Conference Keywords: Reinforced concrete; skewed slabs; experiments; finite element modeling.

1. Introduction As the bridge stock is ageing, assessment of existing bridges becomes more important. As a large number of bridges are reinforced concrete slab bridges, their assessment has been a topic of study for a while (Lantsoght et al., 2017).

* Corresponding author. Tel.: +39-0831-201254. E-mail address: alessandro.lipari@enea.it

2452-3216 © 2026 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the Conference 10.1016/j.prostr.2026.06.139