LUC-2-1682 Anthony Wayne Bridge Main Cable Long Term Health Monitoring.

摘要

In preparation for a large rehabilitation project on the Anthony Wayne Bridge (AWB), the Ohio Department of Transportation has expressed interest in evaluating monitoring and protection strategies which may extend the life of the AWB. This study was proposed and performed in line with this goal. Corrosion of the main cable was identified as the driving mechanism for the aging of suspension bridges. Experiments were performed in order to determine whether or not the existing acoustic monitoring system on the AWB could be used to readily identify active corrosion. Results from laboratory testing show that use of acoustic emission to detect corrosion is possible and promising; however, field experiments indicate that additional tests are needed to determine the practicality of identifying corrosion in the field. The upcoming bridge closure will provide a great opportunity for researchers to more closely examine this possibility. In addition, this report includes literature investigation into other state-of-theart corrosion monitoring and protection strategies including an internal sensor array, the magnetic main flux method for wire inspection, and cable dehumidification.