Effects of large cracks detection on structural integrity assessment: Development of an energetic criteria

摘要

Operators of large civil engineering structures have to ensure that structural integrityrnrequirements are maintained during the in-service life or for further reassessment purposes. Thisrncan be achieved by planing in-situ inspections. In the field of large and complex structure analysis,rnprobabilistic modeling of the crack detection has proved all its interest. This paper proposes to startrnfrom specific definitions of the detection theory to analyze effects of large cracks on the structuralrnintegrity by the mean of a local-global beam finite element and an energetic function as in-servicernintegrity measure. It is shown that this measure leads to provide aid tools for structural criticalrncracked nodes ranking as well as for inspection tools performances ranking.