The objective of this design manual is to illustrate several retrofit concepts, that can be applied to existing bridges, which will enhance the probability of survival of the structure when it is subjected to a severe earthquake environment. The specific retrofit procedures described 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, Girder Bearing Area Widening, Pier Footing Strengthening, Reinforced Concrete Bent Column Strengthening, and Steel Girder Pin Bearing Vertical and Lateral Displacement Restrainer. Section 2 of this manual presents the general design philosophy employed in the retrofit concepts and a brief discussion of the design specifications and materials of construction which have been cited in the design and fabrication examples (Section 3) for each of the eight retrofit concepts. Section 4 summarizes the materials and construction equipment required to implement each of the retrofit measures and also the maintenance considerations for each concept. /Author/

  • Corporate Authors:

    Federal Highway Administration

    Office of Implementation, 1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Robinson, R R
    • Longinow, A
    • Albert, D S
  • Publication Date: 1979-4

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 72 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00300747
  • Record Type: Publication
  • Report/Paper Numbers: FHWA-TS-29-217 Final Rpt.
  • Contract Numbers: DOT-FH-11-8847
  • Files: TRIS, USDOT
  • Created Date: Nov 7 1979 12:00AM