DEVELOPMENT OF CONTINUITY IN PRESTRESSED CONCRETE GIRDER BRIDGES

RESULTS AND DISCUSSION OF A TEST PERFORMED ON A 110-FT. TWO-SPAN CONTINUOUS BEAM OF THREE PRECAST SEGMENTS JOINED BY SPECIAL SCARF CONNECTIONS USING PRESTRESSED KEYS AND EPOXY-SAND MORTAR CUSHIONING ARE PRESENTED. TEST RESULTS ARE DISCUSSED AND ANALYZED TO DETERMINE THE STRUCTURAL BEHAVIOR OF THE BEAM AS A WHOLE. THE SPECIFIC BEHAVIOR OF THE SCARF CONNECTIONS IS ALSO INVESTIGATED AND DESIGN METHODS ARE DEVELOPED. A THEORETICAL DISCUSSION SHOWING THE MERITS OF THE SUGGESTED SYSTEM AS FAR AS DIFFERENTIAL SHRINKAGE AND CREEP EFFECTS IS PRESENTED. STRUCTURAL, PRODUCTION AND ERECTION PROBLEMS ARE ALSO DISCUSSED TOGETHER WITH SUGGESTIONS FOR FUTURE DEVELOPMENTS OF THE SYSTEM. THE STRUCTURAL ADEQUACY OF THE PROPOSED CONNECTION IS PROVED AND A MEANS OF EXTENDING THE SPAN RANGE OF PRESTRESSED PRECAST BRIDGES IS ADVANCED. THE APPLICATION OF THIS NEW PROCEDURE PERMITS USE OF CURRENT PRECAST PRESTRESSED BEAMS AS SEGMENTS NOT EXCEEDING 80-FT. IN LENGTH IN BRIDGE CONSTRUCTION FOR THE NORMAL GRADE SEPARATION ON INTERSTATE DIVIDED HIGHWAYS WITH ONLY ONE CENTRAL SUPPORTING ELEMENT. /AUTHOR/

  • Supplemental Notes:
    • Ees 357, FiNAL REPT, 104 PP
  • Corporate Authors:

    Ohio State University, Columbus

    Engineering Experiment Station, 2070 Neil Avenue
    Columbus, OH  USA  43210
  • Authors:
    • Bishara, A G
  • Publication Date: 1970-12

Subject/Index Terms

Filing Info

  • Accession Number: 00209495
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 15 1971 12:00AM