PRACTICAL BRIDGE RETROFIT CONCEPTS TO REDUCE DAMAGE PRODUCED BY SEISMIC MOTIONS

This paper presents design criteria and design details on eight bridge retrofit concepts which were developed for implementation on existing highway bridges so as to minimize damage and hazard to life in the event of an earthquake. Retrofit categories were selected on the basis of observed damage experienced by highway bridges in previous earthquakes. The eight retrofit concepts are: Concrete box girder hinge longitudinal restrainer. Girder longitudinal displacement stopper at abutment. Steel girder vertical displacement restrainer. Steel girder hinge expansion joint longitudinal restrainer. Pier footing strengthening. Reinforced concrete bent column strengthening. Girder bearing area widening. Steel girder pin bearing vertical and lateral displacement restrainer. This narrative describes the bridge retrofit process and illustrates the individual concepts in terms of intended function and structural details. The design method employed is illustrated by including the step by step design of one of the eight retrofit concepts. /Author/

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 22-30
  • Monograph Title: Bridge Engineering. Volume 2
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00183776
  • Record Type: Publication
  • ISBN: 0309026970
  • Files: TRIS, TRB
  • Created Date: Dec 12 1978 12:00AM