THE PRACTICAL DESIGN OF REDUNDANT PRESTRESSED CONCRETE BRIDGES

THE APPLICATION OF CONTINUITY TO PRESTRESSED CONCRETE IS DISCUDDED, MAKING REFERENCE TO A NUMBER OF STRUCTURES SO DESIGNED. A METHOD OF ANALYSIS IS DEMONSTRATED THAT MAY BE USED TO SIMPLIFY THE DESIGN AND CABLE LAYOUT IN SUCH STRUCTURES. THIS METHOD DEVELOPS AN INFLUENCE LINE FOR SECONDARY MOMENTS EXPRESSED IN TERMS OF UNIT PRESTRESS APPLIED AT UNIT ECCENTRICITY OVER A FINITE SEGMENT OF STRUCTURE. IN THIS MANNER COEFFICIENTS MAY BE DERIVED RAPIDLY ENABLING THE DESIGNERS TO INVESTIGATE ALTERNATE CABLE LOCATIONS WITHOUT A COMPLETE REANALYSIS, OR WITHOUT HAVING TO APPROXIMATE CONCORDANT CABLE LINES. TYPICAL COEFFICIENTS FOR PRISMATIC AND HAUNCHED FIXED BEAMS ARE GIVEN, THUS ENABLING THE DESIGNER TO DERIVE SECONDARY MOMENTS QUICKLY BY MOMENT DISTRIBUTION. /RRL/A/

• Supplemental Notes:
  • No 23, pp 537-547, 5 FIG, 3 PHOT
• Corporate Authors:

  Intl Symp Concr Bridge Des Proc /Can

  ,    
• Authors:
  • Lount, A M
• Publication Date: 1969

Subject/Index Terms

• TRT Terms: Applications; Cables; Concrete bridges; Design; Engineering moments; Prestressed concrete; Redundancy
• Uncontrolled Terms: Continuity; Moment distribution
• Subject Areas: Bridges and other structures; Design; Highways; Research;

Filing Info

• Accession Number: 00208695
• Record Type: Publication
• Source Agency: Road Research Laboratory /UK
• Files: TRIS
• Created Date: Nov 18 1970 12:00AM