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Validation of a crack growth model using observed cracks in a bridge

 Validation of a crack growth model using observed cracks in a bridge
Author(s): ,
Presented at IABSE Congress: Challenges in Design and Construction of an Innovative and Sustainable Built Environment, Stockholm, Sweden, 21-23 September 2016, published in , pp. 265-272
DOI: 10.2749/stockholm.2016.1657
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Fatigue life or crack growth predictions that use information from crack inspections have been applied to offshore structures and, in recent years, also to steel bridges. Apart from inspection data...
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Bibliographic Details

Author(s): (TNO, Delft, Netherlands, and Eindhoven University of Technology, Eindhoven, Netherlands)
(TNO, Delft, Netherlands)
Medium: conference paper
Language(s): English
Conference: IABSE Congress: Challenges in Design and Construction of an Innovative and Sustainable Built Environment, Stockholm, Sweden, 21-23 September 2016
Published in:
Page(s): 265-272 Total no. of pages: 8
Page(s): 265-272
Total no. of pages: 8
Year: 2016
DOI: 10.2749/stockholm.2016.1657
Abstract:

Fatigue life or crack growth predictions that use information from crack inspections have been applied to offshore structures and, in recent years, also to steel bridges. Apart from inspection data, a probabilistic crack growth model and knowledge of the distributions and correlations of the variables are required for such predictions. The performance and validity of such predictions has been demonstrated in laboratory environments but validations for actual, practical situations are currently lacking because of a lack of field data. In particular, realistic distributions and correlations for practice are difficult to obtain. This situation, however, has now changed. Extensive inspections of a specific bridge came recently available, showing multiple cracks in similar details. This provides unique data for validation purposes. This paper uses the inspection data to demonstrate the validity of probabilistic crack growth predictions for this real application.

Keywords:
fatigue orthotropic bridge deck fracture mechanics inspection existing bridges monitoring

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