TESTS OF PRESTRESSED CONCRETE BEAM SPLICES

SAFETY STANDARDS NOW USED IN BRIDGE DESIGN REQUIRE BRIDGE ABUTMENTS TO BE LOCATED CONSIDERABLY FARTHER FROM THE PAVEMENT EDGE THAN PREVIOUSLY. THIS CHANGE IN CRITERIA, COUPLED WITH STANDARD MEDIAN WIDTHS, ROADWAY WIDTHS, ETC. REQUIRES SPAN LENGTHS OF AROUND 100 FT. FOR OVERPASSES HAVING NO SKEW. PRESTRESSED CONCRETE BEAMS HAVE BEEN USED IN A GROWING PROPORTION OF THE BRIDGE SUPERSTRUCTURES. THE PRESTRESSED CONCRETE INSTITUTE HAS RECOGNIZED THE NEED FOR SPLICING AND PRESENTED A NUMBER OF POSSIBLE FIELD SPLICES. THE PRESTRESSED CONCRETE PRODUCERS OF INDIANA UNDERTOOK A FULL-SCALE TEST OF THREE DIFFERENT SPLICE TYPES. THE FOLLOWING SPLICES WERE TESTED: (1) POST-TENSIONED SPLICE, (2) CAST-IN-PLACE SPLICE, AND (3) DROP-IN SPLICE. TESTS INDICATE THAT THE POST TENSION SPLICE SHOULD NOT BE USED IN REGIONS OF HIGH BENDING MOMENT WHERE EXCESSIVE CRACK WIDTH AT WORKING LOADS IS A DESIGN CONSIDERATION. THE OVER-ALL PERFORMANCES OF THE CAST-IN-PLACE SPLICE WAS ADEQUATE. THE DROP-IN SPLICE FUNCTIONED SATISFACTORILY AND THE REINFORCING PATTERN APPEARED ADEQUATE.

• Supplemental Notes:
  • No 22, 30 PP, 21 FIG, 3 TAB
• Corporate Authors:

  Purdue University/Indiana Department of Transportation JHRP

  Purdue University, School of Civil Engineering
  West Lafayette, IN  United States  47907-1284
• Authors:
  • Gutzwiller, M J
  • Lee, R H
• Publication Date: 1969-9

Subject/Index Terms

• TRT Terms: Beams; Bending moments; Bridge abutments; Bridge design; Bridge superstructures; Bridges; Cast in place structures; Posttensioning; Prestressed concrete; Prestressing; Splicing; Structural analysis; Structural design
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00209142
• Record Type: Publication
• Files: TRIS
• Created Date: Feb 9 1970 12:00AM