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Recommendations for the Shear Assessment of Reinforced Concrete Solid Slab Bridges

At IABMAS 2014 in Shanghai, I presented a paper titled “Recommendations for the Shear Assessment of Reinforced Concrete Solid Slab Bridges”.

The abstract of the paper is:

As a result of the heavier live load models and more conservative shear approaches prescribed by the recently implemented Eurocodes, a large number of existing reinforced concrete solid slab bridges in the Netherlands were found to be shear-critical. The beneficial effect of the transverse load redistribution in slabs under concentrated loads is not taken into account. To quantify this effect, a comprehensive number of experiments was carried out. These results are used to formulate recommendations for the assessment practice for the case of solid slab bridges. The recommendations focus on the effective width over which the axle load can be distributed and its lower bound, the beneficial effect of transverse load redistribution and the influence of the yield strength of the reinforcement on the lower bound of the shear capacity. These recommendations are implemented in the “Quick Scan” method, leading to a significant reduction of the shear stresses.

The slides of the presentation are uploaded here as well:

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