Abstract
The exposure and subsequent undermining of pier/abutment foundations through thescouring action of a flood can result in the structural failure of a bridge. Bridge scour is oneof the leading causes of bridge failure. Bridges subject to periods of flood/high flow requiremonitoring during those times in order to protect the traveling public. In thisstudy, an innovative scour monitoring system using button-like fiber Bragg grating(FBG) sensors was developed and applied successfully in the field during theAere typhoon period in 2004. The in situ FBG scour monitoring system has beendemonstrated to be robust and reliable for real-time scour-depth measurements,and to be valid for indicating depositional depth at the Dadu Bridge. The fieldresults show that this system can function well and survive a typhoon flood.
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