The need to design structures with sufficient ductility so that they are capable of undergoing large post-elastic deformations is realised. A literature survey of the research into the strength and ductility characteristics of rectangular and circular concrete columns with lateral confining steel is compiled. An analytical stress-strain curve for circularly confined concrete is developed from material uncovered in the literature survey. A programme of steel testing to determine the stress-strain characteristics of hy-60 steel is undertaken. A computer program is written to develop moment-curvature curves for circularly confined reinforced concrete columns. The theoretically derived moments are compared with aci design chart moments. Recommendations are made to improve the existing code requirements for special transverse steel. The project is an initial survey into the problem of circularly confined reinforced concrete columns (in particular reinforced concrete bridge piers). The final section contains recommendations for further research which is expected to develop from this preliminary survey of a very wide and major topic. (A) /TRRL/

  • Corporate Authors:

    National Roads Board, New Zealand

    P.O. Box 12-041
    Wellington,   New Zealand 
  • Authors:
    • LESLIE, P D
  • Publication Date: 1974

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 92 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00125584
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: Bulletin No. 27 R&D Rept.
  • Files: ITRD, TRIS, ATRI
  • Created Date: Apr 7 1976 12:00AM