RECENT EXPERIENCE IN DYNAMIC MONITORING OF A MULTISPAN BRIDGE
This paper gives a summary of some recent work which uses the traffic-induced vibration of a bridge as a means of integrity monitoring. The work was carried out on Friarton Bridge in Perth, Scotland. This is a 9-span box-girder motorway bridge on the M90. Bridge natural modes were successfully measured under normal traffic loading conditions. Shakers were not necessary to excite the natural modes of the bridge. Quick and efficient methods were developed for measuring full mode shapes of a long span structure. The results show that there is potential using the higher order modes of the bridge to detect structural change. Methods have been developed which can detect 'abnormal' structural change. These methods use the measured natural frequencies and mode shapes of the bridge and are unaffected by changes in temperature. For the covering abstract, see IRRD 892007.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/1874266336
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Corporate Authors:
SETO LTD
11 UPPER BELGRAVE STREET
LONDON, United Kingdom SW1X 4535 -
Authors:
- ROBERTS, G P
- Publication Date: 1997
Language
- English
Media Info
- Pagination: p. 41-3
- Serial:
Subject/Index Terms
- TRT Terms: Box girders; Bridges; Conferences; Dynamics; Evaluation and assessment; Frequency (Electromagnetism); Material reinforcement; Measurement; Surveillance; Temperature; Test procedures; Vibration
- ITRD Terms: 3474: Box girder; 3455: Bridge; 8525: Conference; 5473: Dynamics; 9020: Evaluation (assessment); 6997: Frequency; 6136: Measurement; 9111: Reinforcement (gen); 9101: Surveillance; 6722: Temperature; 6288: Test method; 5558: Vibration
- Subject Areas: Bridges and other structures;
Filing Info
- Accession Number: 00740973
- Record Type: Publication
- Source Agency: Transport Research Laboratory
- ISBN: 1-874266-33-6
- Files: ITRD
- Created Date: Oct 30 1997 12:00AM