MONITORING AND EVALUATION OF A PLATE GIRDER BRIDGE

This paper describes a continuous monitoring system that was used to investigate the impact of a bridge retrofit method involving bolt loosening in the diaphragm/girder connection. The continuous monitoring system was designed and installed at a bridge site and connected to instrumentation. Electrical and telephone utilities were installed at the site to allow for remote control of the system with data transfer capabilities. The data downloaded from the system were used to determine the effectiveness and stability of the retrofit over an extended period of time. Results of the testing showed that the strain in the web gap is significantly reduced with the implementation of the bolt loosening retrofit. The long-term testing program revealed that overall results did not change over time when the retrofit was implemented, suggesting that the retrofit's effectiveness in reducing or eliminating fatigue cracking in the web gap will not deteriorate over time. The continuous monitoring system also was shown to be robust and useful for future monitoring applications.

Language

  • English

Media Info

  • Features: Figures; References;
  • Pagination: 9p
  • Monograph Title: MID-CONTINENT TRANSPORTATION RESEARCH SYMPOSIUM (AMES, IOWA, AUGUST 21-22, 2003). PROCEEDINGS

Subject/Index Terms

Filing Info

  • Accession Number: 00963354
  • Record Type: Publication
  • ISBN: 0965231062
  • Files: TRIS
  • Created Date: Sep 21 2003 12:00AM