DYNAMIC VIBRATION TECHNIQUES IN HIGHWAY BRIDGE MONITORING

Currently, there are different monitoring techniques which can be used for damage detection in bridges. These include approaches based on both static and dynamic behavior. The use of dynamic properties has advantages over static properties, since components of the dynamic properties are only marginally influenced by variations in the loading. When dynamic properties are used, field studies have shown that it is not always sufficient to use only the traditional natural frequencies and modal displacements. Current research on bridge damage detection indicates that derivatives of natural frequencies and modal displacements, including the modal flexibility, the modal assurance criterion, and the coordinate modal assurance criterion, may be used to generate effective diagnostic parameters for damage identification. This report presents a review of all current methods which use vibrational information for bridge monitoring and damage detection. The methods are applied to the results from a field study of a bridge in which expansion bearings were partially restrained in colder weather.

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• Record URL:
  • https://rosap.ntl.bts.gov/view/dot/57524
• Corporate Authors:

  University of Connecticut, Storrs

  Department of Civil and Environmental Engineering, 261 Glenbrook Road
  Storrs, CT  United States  06269-2037

  Connecticut Department of Transportation

  Newington, CT  United States  06131-7546

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • DeWolf, J T
  • Zhao, Jinhua
• Publication Date: 1998-5

Language

• English

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: 53 p.

Subject/Index Terms

• TRT Terms: Diagnostic tests; Dynamic structural analysis; Field studies; Highway bridges; Inspection; Monitoring; Vibration tests
• Uncontrolled Terms: Damage (Bridges)
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00763216
• Record Type: Publication
• Report/Paper Numbers: CEE-98-1,, Final Report
• Contract Numbers: CT-SPR-Study Number 2217
• Files: NTL, TRIS, ATRI, USDOT, STATEDOT
• Created Date: May 7 1999 12:00AM