SEISMIC PERFORMANCE OF REINFORCED CONCRETE BRIDGES WITH UNCONVENTIONAL CONFIGURATIONS

The south connector bridge in the I-5/State Route 14 interchange failed during the 1994 Northridge (California) earthquake because of concentration of shear forces in the short columns near the abutments. In the replacement bridge, the column heights were made uniform and other changes were made with respect to supports near the expansion hinges and hinge connectivity. In this study, the nonlinear seismic response history of a bridge model based on the new bridge was evaluated relative to that of a conventional bridge. Additional studies were conducted to determine if the conclusions presented here are also valid for skewed bridges. Results show that the new design is successful in accomplishing a uniform shear distribution in columns only if abutment shear keys are designed to fail under moderate amplitude ground motions. The lack of continuity in the hinge is a drawback of the new design as it led to large differential displacements at the hinge.

• Record URL:
  http://www.concrete.org/Publications/InternationalConcreteAbstractsPortal.aspx.aspx?m=details&i=10625
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/13846957
• Corporate Authors:

  American Concrete Institute (ACI)

  38800 Country Club Drive
  Farmington Hills, MI  United States  48331
• Authors:
  • Saiidi, M S
  • Moore, R T
  • Itani, A
• Publication Date: 2001-9

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 717-726
• Serial:
  • ACI Structural Journal
  • Volume: 98
  • Issue Number: 5
  • Publisher: American Concrete Institute (ACI)
  • ISSN: 0889-3241
  • Serial URL: http://www.concrete.org/PUBS/JOURNALS/SJHOME.ASP

Subject/Index Terms

• TRT Terms: Bridge abutments; Bridge design; Bridge engineering; Bridge foundations; Columns; Concrete structures; Earthquake engineering; Earthquake resistant structures; Highway bridges; Highway transportation; Reinforced concrete bridges; Seismicity; Shear properties; Structural analysis; Structural engineering; Structural supports
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00818347
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 1 2001 12:00AM