TAY BRIDGE - THE REAL BENEFITS OF IN-SITU STRAIN AND PRESSURE MEASUREMENT

Some seventy gauges were installed on the Tay Bridge for a four month period, during which wind speeds of up to 80mph were experienced, also all types of rail traffic. The use of real time monitoring of wind speed, pressure and direction coupled with real time strain gauge data collection enabled informed decisions to be made regarding the extent of any strengthening which might have been required to resist local wind effects. The exercise has demonstrated that for this particular structure type, location and orientation conventional codified methods for calculating wind pressure and shielding effects are conservative. Additionally the use of strain gauging for determining actual strains, which could then, using the results of material testing, be converted into stresses and forces in members, was an extremely valuable way of giving confidence to the computer analysis and a suitable method for enabling boundary conditions such as bearing stiffness etc to be evaluated. (A) For the covering abstract see ITRD E106406.

Language

  • English

Media Info

  • Pagination: p. 186-94

Subject/Index Terms

Filing Info

  • Accession Number: 00801554
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • ISBN: 0-7277-2854-7
  • Files: ITRD
  • Created Date: Nov 8 2000 12:00AM