Tracking long-term modal behaviour of a footbridge and identifying potential SHM approaches
Wai Kei Ao,
David Hester,
Connor O’Higgins
et al.
Abstract:Numerous studies have investigated the long-term monitoring of natural frequencies, primarily focusing on medium–large highway bridges, using expensive monitoring systems with a large array of sensors. However, this paper addresses the less explored issue of monitoring a footbridge, examining four critical aspects: (i) sensing system, (ii) frequency extraction method, (iii) data modelling techniques, and (iv) damage detection. The paper proposes a low-cost all-in-one sensor/logger unit instead of a conventiona… Show more
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