INVESTIGATE JOINT BAR FAILURES AND GIVE CONSIDERATION TO THE REVISION OF DESIGN AND SPECIFICATIONS

Rolling load tests have been conducted more or less continuously for two years with this machine and valuable information has been reported in the various committee reports. This information has dealt with fatigue life of joint bars, wear, stresses, effect of bolt tension, effect of abnormal conditions of joint bar fit, behavior of various designs of bars, etc. The following tests to be made on the rolling-load machine: (a) effect of "cocked" position of bars, (b) effect of design of bars, (c) effect of bolt tension on rail end breakage, (d) determination of fatigue strength of joint bars. Observational measurements were made during the year and the traffic carried over this test and the resultant joint bar wear are not yet sufficient to justify definite conclusions. Careful examination was made of all joint bars removed for evidence of cracks. One bar made of rail steel was found to have two small cracks on the top fishing surface.

• Corporate Authors:

  American Railway Engineering Association

  59 East Van Buren Street
  Chicago, IL  United States  60605
• Authors:
  • McBrian, R
  • Akers, J B
  • Alexander, W T
• Publication Date: 1942

Media Info

• Pagination: p. 602-603
• Serial:
  • AREA BULLETIN
  • Volume: 43
  • Publisher: American Railway Engineering Association

Subject/Index Terms

• TRT Terms: Bolts; Deformation curve; Dynamic loads; Fastenings; Fatigue (Physiological condition); Holes; Stresses; Technology; Tie bars
• Geographic Terms: United States
• Old TRIS Terms: Bolt holes
• Subject Areas: Railroads; Safety and Human Factors;

Filing Info

• Accession Number: 00033319
• Record Type: Publication
• Report/Paper Numbers: I
• Files: TRIS
• Created Date: Jul 8 1994 12:00AM