Neural network-based formula for shear capacity prediction of one-way slabs under concentrated loads

Miguel Abambres (1) , Eva Lantsoght (2, 3)

1 Abambres' Lab
2 USFQ - Universidad San Francisco de Quito
3 TU Delft - Delft University of Technology

According to the current codes and guidelines, shear assessment of existing reinforced concrete slab bridges sometimes leads to the conclusion that the bridge under consideration has insufficient shear capacity. The calculated shear capacity, however, does not consider the transverse redistribution capacity of slabs, thus leading to overconservative values. This paper proposes an artificial neural network (ANN)-based formula to come up with estimates of the shear capacity of one-way reinforced concrete slabs under a concentrated load, based on 287 test results gathered from the literature. The proposed model yields maximum and mean relative errors of 0.0% for the 287 data points. Moreover, it was illustrated to clearly outperform (mean Vtest / VANN =1.00) the Eurocode 2 provisions (mean VE,EC / VR,c =1.59) for that dataset. A step-by-step assessment scheme for reinforced concrete slab bridges by means of the ANN-based model is also proposed, which results in an improvement of the current assessment procedures.

Mots clés: Neural Networks; Design Formula; One-Way Bridge Slabs; Reinforced Concrete; Shear Capacity

Domaines: Génie civil; Réseau de neurones [cs.NE]; Ingénierie, finance et science [cs.CE]; Ingénierie assistée par ordinateur; Intelligence artificielle [cs.AI]

Miguel Abambres, Eva Lantsoght. Neural network-based formula for shear capacity prediction of one-way slabs under concentrated loads. 2018. ⟨hal-02074675v1⟩