CAPACITY OF CIRCULAR BRIDGE COLUMNS SUBJECTED TO BASE EXCITATION

Fourteen single-stem cantilever columns with various aspect ratios and axial-load ratios were tested on a shaketable. Test results are compared with state-of-the-art methods used to calculate the strength and displacement capacity of columns. It was concluded that large displacement and curvature ductilities were achieved, even though some of the columns had much less spiral reinforcement than required by modern codes; buckling of the longitudinal reinforcing steel initiated failure in all columns; low-level displacement cycling, less than that which causes buckling of the longitudinal steel, softens the column but does not affect ductility capacity; the effective plastic hinge length is not consistently predicted by present methods, but the calculated displacement capacity using the predicted plastic hinge length is conservative; and a possible increase in flexural strength from dynamic excitation was observed.

• 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:
  • Dodd, L L
  • Cooke, N
• Publication Date: 2000-3

Language

• English

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: p. 297-307
• Serial:
  • ACI Structural Journal
  • Volume: 97
  • Issue Number: 2
  • Publisher: American Concrete Institute (ACI)
  • ISSN: 0889-3241
  • Serial URL: http://www.concrete.org/PUBS/JOURNALS/SJHOME.ASP

Subject/Index Terms

• TRT Terms: Axial loads; Bearing capacity; Bridges; Buckling; Cantilevers; Columns; Deformation; Ductility; Failure; Flexural strength; Hinges; Longitudinal reinforcement; Reinforced concrete bridges; Reinforcement (Engineering); Shaking table tests; State of the art
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00790677
• Record Type: Publication
• Contract Numbers: EV-098, RTA59A200, BA-519
• Files: TRIS
• Created Date: Apr 17 2000 12:00AM