Long-Term Structural Performance Monitoring of Bridges: Phase II: Development of Baseline Model and Methodology for Health Monitoring and Damage Assessment

This report describes a project which studied the use of sensor technology for long-term bridge structural health monitoring. In Phase I of the project, sensors were installed on two highway bridges, and vibration measurement data was analyzed. Phase II of the study involved the instrumentation of an additional highway bridge, with focus on developing methodologies for analyzing the sensor data and diagnosing the on-going structural health of the structure. The stiffness of the bridge's structural elements was considered to be an indicator of structural health. By monitoring structural vibration characteristics, structural stiffness can be identified and the extent and location of structural damage can be assessed. The study developed system identification methods for identifying the structural element stiffness based on measurement of bridge vibrations that were caused by traffic and seismic excitations. A unique traffic excitation model was proposed for more reliable stiffness identification based on traffic-induced vibrations. Seismic shaking table tests of a multi-bent multi-column concrete bridge model were conducted to demonstrate the effectiveness of these methods in evaluating seismic damage on a bridge structure. In addition, long-term monitoring data from the instrumented bridges were analyzed and developed into a structural stiffness database using a software platform developed in this study.

• Record URL:
  https://dot.ca.gov/-/media/dot-media/programs/research-innovation-system-information/documents/07-0245-a11y.pdf
• Record URL:
  https://merritt.cdlib.org/api/presign-file/ark%253A%252F13030%252Fm5kh58wp/2/producer%252FCA07-0245.pdf
• 
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/146774753
• Corporate Authors:

  University of California, Irvine

  Department of Civil and Environmental Engineering
  Irvine, CA  United States  92697

  California Department of Transportation

  1120 N Street
  Sacramento, CA  United States  95814
• Authors:
  • Feng, Maria Q
• Publication Date: 2006-10

Language

• English

Media Info

• Media Type: CD-ROM
• Features: Appendices; CD-ROM; Figures; Photos; References; Tables;
• Pagination: 233p

Subject/Index Terms

• TRT Terms: Bridge engineering; Bridges; Investigation of structure; Measurement; Monitoring; Performance; Stiffness; Structural analysis; Structural deterioration and defects; Testing; Vibration
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 01082311
• Record Type: Publication
• Source Agency: UC Berkeley Transportation Library
• Report/Paper Numbers: CA07-0245
• Contract Numbers: RTA59A0311
• Files: CALTRANS, TRIS, STATEDOT
• Created Date: Nov 30 2007 7:25AM