en fr Maintenance decision model for steel bridges: A case in the Netherlands Un modèle décisionnel de maintenance pour les ouvrages dart dacier : Une étude de cas aux Pays-Bas Report as inadecuate




en fr Maintenance decision model for steel bridges: A case in the Netherlands Un modèle décisionnel de maintenance pour les ouvrages dart dacier : Une étude de cas aux Pays-Bas - Download this document for free, or read online. Document in PDF available to download.

1 TNO - The Netherlands Organisation for Applied Scientific Research 2 SLP - Systèmes Logistiques et de Production LS2N - Laboratoire des Sciences du Numérique de Nantes 3 DAPI - Automatique, productique et informatique 4 TU-e - Eindhoven University of Technology Eindhoven

Abstract : A probabilistic model is developed to investigate the crack growth development in welded details of orthotropic bridge decks. Bridge decks may contain many of these vulnerable details and bridge reliability cannot always be guaranteed upon the attainment of a critical crack. Therefore insight into the crack growth development is crucial in guaranteeing bridge reliability and scheduling efficient maintenance schemes. The probabilistic nature of the crack growth development model and the dependence of this model on many interdependent random variables results in significant uncertainties regarding model outcome. To reduce some of these uncertainties the probabilistic model is combined with a monitoring system installed on a part of the bridge. In addition, a Bayesian network is used to determine the dependence structure between the different details monitored and non-monitored of the bridge. This dependence structure enables us to make more accurate crack growth predictions for all details of the bridge while monitoring only a limited number of those details and updating the remaining uncertainties.

Keywords : Linear elastic fracture mechanics Non-parametric Bayesian networks Monitoring Bridge deck Fatigue





Author: Thomas Attema - Alex Kosgodagan Acharige - Oswaldo Morales-Nápoles - Johan Maljaars -

Source: https://hal.archives-ouvertes.fr/



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