Seismic Performance of Retrofitted Reinforced Concrete Bridge Pier

This paper presents the experimental testing of a bridge pier for seismic performance. A half-scale model of a typical bent in the Bay Area Rapid Transit's (BART's) West Oakland Aerial Guideway was investigated. Two pseudo-cyclic bidirectional tests were conducted on a single test specimen that modeled an existing pier including proposed retrofit measures. Twenty-four battered piles provided the foundation moment capacity during a system test. This test was designed to test the failure mechanism of the pile-pile cap connection. Another test isolated the column-footing joint by restraining the pile cap rotation and translation. A retrofitted pile cap was examined for its joint shear response. The test results showed a limited system ductility after pile failure, followed by a rocking movement from the pier. Results from the joint shear test indicated the retrofit could prevent joint shear failure and established the allowable column-footing joint shear stress to use in retrofit design.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/13846957
• Authors:
  • Schoettler, Matthew J
  • Restrepo, Jose I
  • Seible, Frieder
  • Matsuda, Ed
• Publication Date: 2005-11

Language

• English

Media Info

• Media Type: Print
• Features: Figures; Photos; References; Tables;
• Pagination: pp 849-859
• Serial:
  • ACI Structural Journal
  • Volume: 102
  • Issue Number: 6
  • Publisher: American Concrete Institute (ACI)
  • ISSN: 0889-3241
  • Serial URL: http://www.concrete.org/PUBS/JOURNALS/SJHOME.ASP

Subject/Index Terms

• TRT Terms: Bents; Bridge piers; Ductility; Earthquake resistant design; Elevated guideways; Failure analysis; Joints (Engineering); Pile caps; Retrofitting; Scale models; Shear stress; Shear tests
• Identifier Terms: San Francisco Bay Area Rapid Transit District
• Subject Areas: Bridges and other structures; Design; Highways; Maintenance and Preservation; Public Transportation; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 01006912
• Record Type: Publication
• Files: TRIS
• Created Date: Nov 2 2005 8:18PM