Tussencolloquium – Jelle Mensink
Time-dependent bridge slap analysis incorporating (differential) settlement
Many of todayâ€™s structures (approximately 60%) have been built before 1975. These bridges will reach the end of its design service-life (50 years) quickly. Rijkswaterstaat (RWS) currently owns approximately 4.000 concrete bridges and these bridges must all be monitored. Therefore, RWS & TNO are searching for new monitoring possibilities, such as satellite measurements (PSInSAR). Most commonly RWS is measuring and monitoring its structures via deformation measurements.
But in order to utilize these deformations and asses the structure, an understanding must be obtained of the question: What are deformations and what is causing these deformations?
In this interim-colloquium an analysis of a prestressed concrete structure is provided utilizing creep, shrinkage, relaxation, (differential) temperature and settlements in time via the codes of practice (EN-1992-1-2:2004 & CEB-fib Model Code 2010). In which a link is made between deformation measurements obtain via RWS and the FE Model.
The main objective of this research is to determine the time-dependent deformation behavior of a concrete structure and propose recommendations for improvements for deformation monitoring.
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