This study examines the dynamic testing of masonry arch bridges to determine structural condition. Three masonry arch bridges were tested using seismometers and LVDTs to measure the responses. The bridges were loaded using calibration trucks, random traffic, and a drop-weight device. The use of vibration velocities, intensities, and frequencies were used to determine the condition of the bridges. The vibration studies are simple to conduct, but the longitudinal crack present in the Stony Brook Bridge was undetected by the vibration testing. The other two structures showed very large vibrations in a structure with no visible damage. These vibrations could indicate large cracks in the structure causing a separation of the arch ring. This shows the promise of using vibration testing to determine the position of localized damage in less complex masonry arch bridges. (A) For the covering abstract, see IRRD E100543.


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  • Accession Number: 00764298
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • ISBN: 90-5809-012-4
  • Files: ITRD
  • Created Date: May 28 1999 12:00AM