SEISMIC RETROFITTING FOR HIGHWAY BRIDGES

The San Fernando earthquake of February 9, 1971 has demonstrated that bridges located in high risk seismic zones and which were designed in accordance to the then prevailing AASHO design criteria may not possess adequate seismic resistance. This narrative describes an effort which was undertaken to develop a set of practical retrofit measures that can be employed on existing bridges so as to reduce damage and minimize the threat to life should an earthquake occur. The process leading to the identification of potential bridge weaknesses, selection of retrofit measure and verification of its adequacy is illustrated using two analysis procedures, i. e. , a detailed analysis method and a simplified one.

• Supplemental Notes:
  • Proceedings of the International Symposium on Earthquake Structure Engineering August 19-21, 1976 St Louis, Missouri.
• Corporate Authors:

  University of Missouri, Rolla

  Department of Civil Engineering, 1870 Miner Circle
  Rolla, MO  United States  65409
• Authors:
  • Longinow, A
  • Robinson, R R
  • Chu, K H
  • Cooper, J D
• Conference:
  • Proceedings of the International Symposium on Earthquake Structure Engineering August 19-21, 1976 St Louis, Missouri.
• Publication Date: 1976-8

Media Info

• Pagination: p. 37-50

Subject/Index Terms

• TRT Terms: Bridge design; Bridges; Design; Earthquake resistant design; Earthquake resistant structures; Highway bridges; Reconstruction; Retrofitting; Seismicity; Structural analysis; Structural design
• Uncontrolled Terms: Design criteria; Seismic response
• Old TRIS Terms: Seismic resistance
• Subject Areas: Bridges and other structures; Design; Highways;

Filing Info

• Accession Number: 00153215
• Record Type: Publication
• Source Agency: Engineering Index
• Files: TRIS
• Created Date: Jun 17 1977 12:00AM