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About the fellowship
Backgroung
Recently, the re-assessment of the collapse of the
Koror-Babeldaob Bridge (in 1996), a pre-stressed
bridge built by the cantilever method, concluded
that this was due to excessive deflections linked to
concrete creep and shrinkage that appeared and
grew non-linearly some years after construction.
Interestingly, similar trends have been found for a
group of 56 similar bridge spans, raising the
question whether such concerns could influence the
maintenance and service life of a high number of
pre-stressed bridges in Europe and beyond with
important socio-economic impact.
Objectives
The five objectives of the LostPreCon project were
set as follows:
• Objective 1: Review existing models for shrinkage
and creep at specimen level.
• Objective 2: Establish robust hybrid FE models for
medium/long-term performance predictions.
• Objective 3: Develop a novel monitoring approach
based on Digital Image Correlation (DIC).
• Objective 4: Formulate a time-dependent reliability
assessment framework, addressing creep and
shrinkage uncertainties.
• Objective 5: Produce representative performance-
time profiles for pre-stressed bridges based on the
proposed framework and models.