A probabilistic approach for the quantification of structural robustness

Nadia Christiana Kagho Gouadjio (1) , André Orcesi (1) , Christian Cremona (2)

1 IFSTTAR/SOA - Département Structures et Ouvrages d'Art
2 SETRA - Service d'Etudes Techniques des Routes et Autoroutes

For civil engineering structures, robustness reflects the ability of the entire system, including the most critical elements, to withstand events without being damaged to an extent disproportionate to the original cause. Under uncertainties on loading effects and material/geometric properties, defining and quantifying robustness is a crucial issue. This paper proposes a reliability-based framework for analyzing progressive deterioration and quantifying the impact of relatively small damage on major structural consequences. Since there might be a large number of failure paths for structures with a high degree of redundancy, stochastically dominant failure paths are identified by using structural system reliability methods. The proposed methodology is applied to some examples and the results are discussed.

Mots clés: FIABILITE DES STRUCTURES; VULNERABILITE; RISQUE; APPROCHE PROBABILISTE

Domaines: Mécanique des structures [physics.class-ph]; Mécanique des structures [physics.class-ph]

Nadia Christiana Kagho Gouadjio, André Orcesi, Christian Cremona. A probabilistic approach for the quantification of structural robustness. IABMAS 12, Jul 2012, Italy. pp 632-639. ⟨hal-01065042⟩