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Communication Dans Un Congrès Année : 2011

Contribution of knowledge of real properties of existing civil engineering structures in refining the structures reliability assessment

Romain Goy
  • Fonction : Auteur
Gaël Thillard
  • Fonction : Auteur

Résumé

Within the framework of many consulting assignments about risk and lifecycle management of existing civil engineering infrastructures, OXAND's analyses relied on structures assessment taking into account the structure's state of deterioration, the quantitative estimate of its residual bearing capacity and the future progression of this capacity over time. The structure assessment can be carried out considering different methods. In a general manner, three main axes allow to characterize the method of assessment: behaviour modelling, origin of input data, uncertainties consideration. In this three dimensional basis, several assessment methods levels can be defined from purely regulatory calculation, using standard or design input data, to realistic and probabilistic approaches. According to the results of the first assessment levels, it is possible to refine the calculations by moving to higher levels. This methodology will be illustrated by an example which consists of networks of reinforced concrete beams subjected to a rapid increase in their mechanical stresses. The risk of a beam failure was brought under control by setting up a maintenance procedure, which unfortunately created a risk of unavailability of these infrastructures. Higher levels of assessment represent potential ways to reduce this risk of unavailability by taking full advantage of the real properties of the structures.
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Dates et versions

hal-04267101 , version 1 (01-11-2023)

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  • HAL Id : hal-04267101 , version 1

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Humberto Yáñez-Godoy, Romain Goy, Gaël Thillard. Contribution of knowledge of real properties of existing civil engineering structures in refining the structures reliability assessment. The 9th International Probabilistic Workshop,, Technische Universität Braunschweig, Nov 2011, Braunschweig, Germany. ⟨hal-04267101⟩
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