MONITORING THE AFTER FRACTURE RESPONSE OF A FULL SCALE BRIDGE USING AN INTEGRATED OPTICAL FIBER SENSOR SYSTEM

An optical fiber monitoring system is designed and integrated at the construction stage in an experimental full scale laboratory bridge. The test bridge is a 40-foot span non-composite steel girders concrete deck bridge. The network of sensors is used to measure the strain throughout the bridge, with sensors bonded to the tension steel in the slab, and attached to the bottom flange of the girders. Foil gages and optical fiber gages are placed side by side to compare results. The strain data is obtained for the pristine structure, then damage is introduced at midspan of an exterior girder. Several levels of damage in the form of cut in one of the girders are imposed with the final cut, resulting in a half depth fracture of the girder. The real time after fracture response of the structure is obtained using the built-in sensor system.

Language

  • English

Media Info

  • Features: Figures; References;
  • Pagination: p. 178-191

Subject/Index Terms

Filing Info

  • Accession Number: 00725719
  • Record Type: Publication
  • ISBN: 8487867790
  • Files: TRIS
  • Created Date: Sep 9 1996 12:00AM