TESTS OF LONG A440 STEEL BOLTED BUTT JOINTS

FOUR TESTS OF LONG STRUCTURAL JOINTS OF A440 STEEL, CONNECTED WITH A325 HIGH STRENGTH BOLTS INSTALLED BY THE TURN OF THE NUT METHOD, WERE CONDUCTED TO DETERMINE THEIR SLIP RESISTANCE AND ULTIMATE STRENGTH. THE PRIMARY OBJECTIVE OF THE TEST SERIES WAS TO SUBSTANTIATE THE RESULTS OF RECENT THEORETICAL AND ANALYTICAL STUDIES. ALL OF THE JOINTS HAD TWO LINES OF FASTENERS, WITH 7 IN LINE FOR TWO OF THE SPECIMENS AND 16 IN LINE FOR THE REMAINING TWO. IT WAS FOUND THAT AS THE LOADING WAS INCREASED, THE DIFFERENTIAL MOVEMENT BETWEEN DISCRETE CONTACT POINTS OF THE FAYING SURFACES WOULD PROCEED INWARD FROM THE JOINT ENDS UNTIL THE MAXIMUM STATIC FRICTIONAL RESISTANCE WAS OVERCOME. AT THIS POINT A SUDDEN MAJOR MOVEMENT OF THE ENTIRE LAP PLATE WITH RESPECT TO THE MAIN PLATE WOULD OCCUR. THIS CONSTITUTED MAJOR SLIP. /AUTHOR/

• Supplemental Notes:
  • Hps-hpr1/2/, BPR-2, PDH-360, FEB65
• Corporate Authors:

  Lehigh University

  Bethlehem, PA  United States  18015
• Authors:
  • Sterling, G H
  • Fisher, J W
• Publication Date: 1965-2

Subject/Index Terms

• TRT Terms: Bolted joints; Bolts; Butt joints; Fasteners; Joints; Loads; Slip resistance; Structural steel; Testing; Theory; Ultimate strength
• Uncontrolled Terms: A325 bolts; Loading
• Old TRIS Terms: A440 steel; Determination; High-strength bolts; Turn of the nut method
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00207735
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 1 1994 12:00AM