Direct Field Measurement of the Dynamic Amplification in a Bridge

Ciaran Carey, Eugene J. O'Brien, Abdollah Malekjafarian, Myra Lydon, Su Taylor

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)
413 Downloads (Pure)


In this paper, the level of dynamics, as described by the Assessment Dynamic Ratio (ADR), is measured directly through a field test on a bridge in the United Kingdom. The bridge was instrumented using fiber optic strain sensors and piezo-polymer weigh-in-motion sensors were installed in the pavement on the approach road. Field measurements of static and static-plus-dynamic strains were taken over 45 days. The results show that, while dynamic amplification is large for many loading events, these tend not to be the critical events. ADR, the allowance that should be made for dynamics in an assessment of safety, is small.
Original languageEnglish
Pages (from-to)601-60
Number of pages9
JournalMechanical Systems and Signal Processing
Early online date10 Sep 2016
Publication statusPublished - 15 Feb 2017

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