Motion Sensors for Scour Monitoring: Laboratory Experiments and Numerical Simulations

Bridge scour monitoring using fixed instrumentation is a good way for the owner to be warned of imminent failure and take appropriate action before exposing the public to undue risk. This paper shows an easy way to predict imminent failure of bridges by installing a motion sensor on the bridge. Two laboratory experiments are described in the paper, and a relationship between the natural frequency of the bridge and the scour depth is presented. Numerical models for the two experiments are established and analyzed. Both the lab data analysis and numerical simulation show that the natural frequency of the simulated bridge-foundation system changes with time. Therefore motion sensor can be used for scour monitoring.

• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Briaud, Jean-Louis
  • Yao, Congpu
  • Darby, Colin
  • Sharma, Hrishikesh
  • Hurlebaus, Stefan
  • Chang, Kuang-An
  • Hunt, Beatrice Elvira
  • Yu, Ok-Youn
• Conference:
  • Transportation Research Board 89th Annual Meeting
  • Location: Washington DC, United States
  • Date: 2010-1-10 to 2010-1-14
• Date: 2010

Language

• English

Media Info

• Media Type: DVD
• Features: Figures; References; Tables;
• Pagination: 22p
• Monograph Title: TRB 89th Annual Meeting Compendium of Papers DVD

Subject/Index Terms

• TRT Terms: Bridge foundations; Failure analysis; Infrastructure; Laboratory tests; Monitoring; Numerical analysis; Scour; Sensors
• Subject Areas: Bridges and other structures; Highways; Maintenance and Preservation; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 01152215
• Record Type: Publication
• Report/Paper Numbers: 10-3545
• Files: TRIS, TRB
• Created Date: Mar 16 2010 6:12AM