MOMENT-ROTATION CHARACTERISTICS OF SHEAR CONNECTIONS

A STANDARD SHEAR CONNECTION IS A PAIR OF ANGLES FASTENED TO THE WEB BY WELDS AND FIELD BOLTED OR WELDED TO THE SUPPORTING GIRDER OR COLUMN. THIS TYPE OF CONNECTION HAS PROVED RELIABLE AND HAS AS ADVANTAGES: (1) THE LONGITUDINAL POSITION OF THE ANGLES CAN BE ADJUSTED SLIGHTLY TO ALLOW FOR OVER- OR UNDER-CUT IN THE LENGTH OF THE BEAM, AND (2) THE PROJECTION OF THE ANGLES BEYOND THE END OF THE BEAM PROVIDE FOR SOME CLEARANCE FOR ERECTION. A SIMPLER SHEAR CONNECTION CONSISTS SOLELY OF A VERTICAL END PLATE WELDED TO THE END OF THE WEB THAT TRANSFERS TO THE BEAM. THE BEHAVIOR IS ANALYZED OF THESE END PLATE SHEAR CONNECTIONS TO DETERMINE THE MOMENT-ROTATION CHARACTERISTICS. COMPARATIVE TESTS WERE CONDUCTED ON ANGLE CONNECTIONS OF COMPARABLE GEOMETRY. BY COMPARING SETS OF CURVES, IT WAS POSSIBLE TO DETERMINE, WITHIN THE LIMITS OF THE EXPERIMENTS, THE EFFECT OF VARIATION OF EACH PARTICULAR PARAMETER ON THE MOMENT-ROTATION CURVE. THE ADEQUACY OF THE SHEAR CONNECTIONS FOR USE DEPENDS ON WHETHER OR NOT THEY CAN DEVELOP THE REQUIRED SHEAR CAPACITY AND WHETHER THE ROTATIONS REACHED EXCEED THOSE WHEN THE BEAM HAS ITSELF REACHED ITS ULTIMATE LOAD. TWO METHODS OF ANALYSIS ARE SUGGESTED BY THE BEHAVIOR OF THE CONNECTION PLATES: FLEXURAL ANALYSIS AND MEMBRANE ANALYSIS. THESE ANALYSES SHOW THAT: (1) END PLATE CONNECTIONS CAN PROVIDE ADEQUATE SHEAR CONNECTIONS WHEN DESIGNED FOR SHEAR ONLY, (2) END PLATE CONNECTIONS DISPLAY MOMENT ROTATION CHARACTERISTICS SIMILAR TO THOSE OF ANGLE CONNECTIONS, (3) END PLATE CONNECTIONS CAN BE DESIGNED FOR A WIDE RANGE OF FLEXIBILITIES, (4) IN DEEP CONNECTIONS THE POSSIBILITY OF BOLT FRACTURE SHOULD BE INVESTIGATED, (5) END PLATE CONNECTIONS SHOULD PROVIDE A ROTATION IN EXCESS OF THE BEAM LINE WHEN COLUMN BEARING OCCURS, (6) A TWO-PHASE BEAM LINE IS REQUIRED TO REPRESENT THE ATTAINMENT OF SOME SPECIFIED STRESS LEVEL IN THE BEAM, AND (7) A COMBINED FLEXURAL MEMBRANE ANALYSIS CAN BE USED TO PREDICT THE MOMENT AND ROTATION AT COLUMN BEARING.

• Supplemental Notes:
  • Vol 6, No 4, PP 105-115, 24 FIG, 6 REF
• Authors:
  • Kennedy, D J
• Publication Date: 1969-10

Media Info

• Serial:
  • Engineering J, Am Inst Steel Constr

Subject/Index Terms

• TRT Terms: Bolts; Engineering moments; Fasteners; Flexure; Rotation; Shear reinforcement; Structural analysis; Webbing; Weldments
• Uncontrolled Terms: Membranes; Shear connectors
• Old TRIS Terms: Membranes (Biology); Moments
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00209110
• Record Type: Publication
• Files: TRIS
• Created Date: Feb 24 1970 12:00AM