DESIGN OF BENT CAPS FOR CONCRETE BOX-GIRDER BRIDGES; FINAL REPORT, PART 1

Investigation of intergral bent cop in straight, continuous, reinforced concrete box-girder bridges indicate that reductions in the amount of flexural reinforcement in the bent cap of up to 40 percent can be made without reducing safety and while maintaining adequate serviceability. Even greater reductions in the amount of reinforcement can be made for bent caps with flared columns. Most of this improved economy results from a change from working stress to the load factor method of design. Many variables (load distribution, effect of flaring the column, effective flange width, effect of spreading the main tensile reinforcement, and the location of the critical deisgn sections) were studied. The experimental program included tests on scale models, and the analytical studies included development of a computer program.

• Corporate Authors:

  Portland Cement Association

  5420 Old Orchard Road
  Skokie, IL  United States  60077
• Authors:
  • Carpenter, J E
  • Hanson, J M
  • FIORATO, A E
  • Russell, H G
  • Meinheit, D F
  • Rosenthal, I
  • Corley, W G
  • Hognestad, E
• Publication Date: 1975

Media Info

• Features: Figures; References; Tables;
• Pagination: 24 p.

Subject/Index Terms

• TRT Terms: Bents; Box girders; Bridge design; Bridges; Columns; Computer programs; Concrete bridges; Flexure; Material reinforcement; Scale models; Structural design
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00149691
• Record Type: Publication
• Report/Paper Numbers: Bulletin RD032.01E Final Rpt.
• Files: TRIS
• Created Date: Apr 13 1977 12:00AM