THE BEHAVIOR AND DESIGN OF BOLTED SHINGLE SPLICES

BOLTED SHINGLE JOINTS ARE CURRENTLY DESIGNED BY METHODS DEVELOPED FOR RIVETED JOINTS WHICH DO NOT MAKE EFFECTIVE USE OF THE HIGH SHEAR STRENGTH OF THE FASTENERS. THE RESULTS OF A SERIES OF ANALYTICAL STUDIES AND A COMPLIMENTARY TEST PROGRAM EXAMINING THE STRENGTH AND BEHAVIOR OF BOLTED SHINGLE JOINTS ARE PRESENTED. CRITERIA FOR THE DESIGN OF SHINGLE JOINTS BASED ON THE OBSERVED BEHAVIOR ARE SUGGESTED. THE VARIABLES EXAMINED IN THE ANALYTICAL STUDIES ARE (1) THE A SUB N/A SUBS RATIOS, (2) THE NUMBER OF FASTENERS, (3) THE NUMBER OF FASTENERS PER REGION, AND (4) THE NUMBER OF REGIONS. THE AVERAGE SHEAR STRENGTH OF SHINGLE JOINTS WAS SHOWN TO DECREASE WITH JOINT LENGTH AS WAS OBSERVED IN BUTT JOINTS. IN THE EXPERIMENTAL PROGRAM, NINE SHINGLE JOINTS WERE TESTED. THE TEST RESULTS CONFIRMED THE INDICATIONS OF PREVIOUS STUDIES THAT THE SLIP IN SHINGLE JOINTS TEND TO BE LESS THAN THE HOLE CLEARANCE. IT IS BELIEVED THAT SHINGLE JOINTS CAN BE CONSIDERED NONSLIP-CRITICAL AND DESIGNED AS BEARING-TYPE JOINTS. THIS WOULD REDUCE THE NUMBER OF FASTENERS AND THE AMOUNT OF REQUIRED SPLICE MATERIAL. UP TO 50 PERCENT OF THE FASTENERS CURRENTLY USED CAN BE REMOVED WITHOUT SUBSTANTIAL LOSSES IN JOINT STRENGTH. VARIOUS DESIGN METHODS APPROXIMATING THE DISTRIBUTION OF LOAD IN THE JOINT ELEMENTS ARE COMPARED WITH THE EXPERIMENTAL LOAD PARTITIONS AT THE WORKING LOAD LEVEL. A PREFERRED METHOD OF DESIGN IS RECOMMENDED. /AUTHOR/

  • Corporate Authors:

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590

    Louisiana Department of Highways

    P.O. Box 44245, Capitol Station
    Baton Rouge, LA  United States  70804

    Lehigh University

    Bethlehem, PA  United States  18015
  • Authors:
    • Power, E H
    • Fisher, J W
  • Publication Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 00215965
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: Study No 68-1 St
  • Files: TRIS, USDOT, STATEDOT
  • Created Date: Jan 12 1972 12:00AM