Abstract

This research focuses on the vibration characteristics of steel truss bridges and how structural complexity influences the chances of successful damage detection (DD). The structural complexity of almost 200 structures from the literature is quantified, highlighting that DD is less successful for experimental structures with high levels of complexity as compared to structures with low levels of complexity. The vibration characteristics of a complex structure were studied under different damage scenarios, revealing that the characteristics most sensitive to damage were also the characteristics with the highest variance. In short, structural complexity makes damage detection difficult.

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