Coaxial Cable Sensors and Sensing Instrument for Crack Detection in Bridge Structures – Phase I: Field Qualification/Validation Planning

The objectives of this study are to pre-test analyze a decommissioned reinforced concrete (RC) bridge that is selected in consultation with the New York State Department of Transportation (NYSDOT), and design and plan the field tests of the bridge for the performance qualification and validation of distributed crack sensors and a fast Electrical Time Domain Reflectometry (ETDR) instrument to their full potential. The scope of work includes: (a) Selection of a decommissioned bridge, (b) Pre-test analysis of the selected bridge structure to evaluate its progressive damage and determine the locations for sensor deployment, (c) Design and planning of field tests of the selected bridge, (d) Field instrumentation with coaxial cable and fiber optical sensors for performance comparison, and (d) Summary of the findings of this study. Once fully validated and demonstrated in field conditions, distributed crack sensors and sensing instruments are expected to play a significant role in routine inspections and bridge ratings and in the rapid assessment of structural conditions for post-event evaluations and responses, improving the safety and security of transportation infrastructure at the height of a crisis. These roles are due primarily to their unique ability of permanently recording the widest crack a RC member experienced during a recent event. Such an attribute ensures the availability of damage data even if a fast ETDR system experiences malfunction during the event, greatly improving the reliability of bridge inspections.

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  • Supplemental Notes:
    • This research was supported by a grant from the U.S. Department of Transportation, Uniiversity Transportation Centers Program. This report was prepared for the New York State Energy Research and Development Authority under Agreement No. 9820.
  • Corporate Authors:

    Center for Transportation Infrastructure and Safety

    University Missouri - Rolla, Civil Engineering - UMR
    325 Butler-Carlton Hall
    Rolla, MO  United States  65409

    Research and Innovative Technology Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590

    New York State Energy Research and Development Authority

    17 Columbia Circle
    Albany, NY  United States  12203

    New York State Department of Transportation

    50 Wolf Road, POD 34
    Albany, NY  United States  12232-0869
  • Authors:
    • Chen, Genda
    • Tang, Fujian
    • Zhou, Zhi
  • Publication Date: 2009-11


  • English

Media Info

  • Media Type: Web
  • Edition: Final Report
  • Features: Figures; References; Tables;
  • Pagination: 46p

Subject/Index Terms

Filing Info

  • Accession Number: 01147310
  • Record Type: Publication
  • Report/Paper Numbers: NUTC R230, Report No. 00022579, C-06-34
  • Contract Numbers: DTRT06-G-0014 (Grant); NYS Contract No. 9820
  • Created Date: Dec 24 2009 6:50AM