RESTRAINT CHARACTERISTICS OF FLEXIBLE RIVETED AND BOLTED BEAM-TO-COLUMN CONNECTIONS

THE BEHAVIOR OF FLEXIBLE RIVETED AND BOLTED BEAM-TO-COLUMN CONNECTIONS IS DESCRIBED ALONG WITH THE FACTORS WHICH INFLUENCE THEIR MOMENT-ROTATION CHARACTERISTICS. THE LOCATION OF THE CENTER-OF-ROTATION OF THE CONNECTION ANGLES AND THE LOAD-DEFORMATION RELATIONSHIPS, AS DETERMINED FOR SHORT ANGLE SEGMENTS, ARE CONSIDERED TO BE THE MOST SIGNIFICANT FACTORS NECESSARY TO ESTABLISH THE RELATIONSHIP BETWEEN MOMENT AND ROTATION OF A CONNECTION. IT IS SHOWN THAT THE LOAD-DEFORMATION EXPRESSIONS FOR ANGLE SEGMENTS CAN BE DETERMINED ANALYTICALLY FOR DEFORMATIONS THAT ARE SUFFICIENTLY LARGE TO INSURE PLASTIC HINGES AT THREE CRITICAL LOCATIONS IN THE ANGLES. BASED ON THE DATA FROM TESTS CONDUCTED ON FULL SIZE FLEXIBLE CONNECTIONS THE LOCATION OF THE CENTER-OF-ROTATION CAN BE SHOWN TO BE A FUNCTION OF THE DEFORMATION OF THE CONNECTION ANGLES. MOMENT-ROTATION INFORMATION IS READILY DETERMINED FOR CONNECTION ANGLES OF THICKNESSES UP TO AND INCLUDING THOSE 7/16 INCHES THICK, AND WITH FROM TWO TO TEN ROWS OF FASTENERS. IN THE DEVELOPMENT OF THESE RELATIONSHIPS THE INFLUENCE OF VARIABLES SUCH AS GAGE, FILLET RADIUS, YIELD POINT, FASTENER SIZE AND ANGLE THICKNESS ARE ALSO CONSIDERED . RECOMMENDATIONS ARE MADE FOR THE UTILIZATION OF THE RESTRAINT CHARACTERISTICS OF FLEXIBLE CONNECTIONS IN DESIGN. THE SAVINGS IN BEAM WEIGHT ARE SHOWN TO BE AS GREAT AS SIX OR SEVEN PER CENT AND THE REDUCTION IN DEPTH USUALLY 2 OR 4 INCHES, DEPENDING ON LOADING CONDITION AND FRAMING. /AUTHOR/

• Supplemental Notes:
  • Hpr-1/2/, IHR-5, 160 PP, 74 FIG, 7 TAB, 9 PHOT, 10 REF
• Corporate Authors:

  University of Illinois, Urbana-Champaign

  Urbana, IL  United States  61801

  Illinois Department of Transportation

  Division of Highways, 2300 South Dirksen Parkway
  Springfield, IL  United States  62764
• Authors:
  • Lewitt, C W
  • Chesson, E JR
  • Munse, W H
• Publication Date: 1966-3

Subject/Index Terms

• TRT Terms: Angularity; Beams; Constraints; Couplers; Deformation; Design; Engineering moments; Fasteners; Flexibility; Joints; Loads; Rivets; Rotation; Weight
• Uncontrolled Terms: Angles
• Old TRIS Terms: Bolted connectors; Connectors; Flexible couplings; Moments; Riveted joints
• Subject Areas: Bridges and other structures; Design; Highways;

Filing Info

• Accession Number: 00207831
• Record Type: Publication
• Source Agency: Bureau of Public Roads /US
• Files: TRIS
• Created Date: Jun 15 1994 12:00AM