BEHAVIOR OF LARGE SHINGLE SPLICES THAT SIMULATE BRIDGE JOINTS

THE WORK IS SUMMARIZED ON TWO FULL SIZE SIMULATED BRIDGE JOINTS AND FIVE SMALL BUTT SPLICES. ONE LARGE JOINT WAS FASTENED WITH A325 BOLTS AND THE OTHER JOINT WITH A502 GR. 1 RIVETS. THE TEST JOINTS SIMULATED A CHORD MEMBER AND SPLICE ON THE BATON ROUGE INTERSTATE BRIDGE, A THREE SPAN CONTINUOUS TRUSS BRIDGE OVER MISSISSIPPI RIVER. THE SMALL BUTT SPLICES PROVIDED REFERENCE DATA. EACH LARGE JOINT CONSISTED OF THREE MAIN PLATES AND TWO EDGE ANGLES WITH LAP PLATES. THE JOINTS WERE FASTENED WITH ONE HUNDRED TWENTY- EIGHT BOLTS OR RIVETS. THE JOINTS WERE TESTED IN A 5,000,000 LB. UNIVERSAL TESTING MACHINE IN AXIAL TENSION. THE JOINT ELONGATION BEHAVIOR, LOCAL SLIP BEHAVIOR AND THE FORCE DISTRIBUTION WERE OBSERVED FOR EACH JOINT. THE RESULTS OF THE LARGE SIMULATED JOINTS WERE COMPARED SINCE THEIR JOINT GEOMETRY WAS THE SAME. ONLY THE TYPE OF FASTENER DIFFERED. THE TEST RESULTS INDICATED CLEARLY THAT SUBSTANTIAL SLIP DOES OCCUR IN RIVETED JOINTS. THE COMPARISON BETWEEN THE LARGE RIVETED AND BOLTED JOINTS INDICATED THAT THE MAGNITUDES OF SLIP IN THE RIVETED JOINT WAS MORE THAN HALF THE SLIP THAT OCCURED IN THE BOLTED JOINT. THE JOINT TESTS ALSO ILLUSTRATED THAT COMPLEX BOLTED JOINTS ARE UNLIKELY TO SLIP THE FULL AMOUNT OF THE BOLT HOLE CLEARANCE. THIS STUDY ALSO CONFIRMED THAT THE HIGHER ALLOWABLE STRESSES SUGGESTED IN PREVIOUS INVESTIGATIONS PROVIDED SUITABLE BEHAVIOR IN THE WORKING LOAD RANGE AND UP TO JOINT SLIP. A THEORETICAL ELASTIC SOLUTION WAS ALSO DEVELOPED FOR THE LOAD PARTITION IN A SHINGLE JOINT. IT IS BASED ON PREVIOUS WORK ON SYMMETRICAL BUTT SPLICES. THE SOLUTION PROVIDES THE STRESS RESULTANTS IN ALL PLATE ELEMENTS AND AT ALL FASTENER SHEAR PLANES. MATRIX NOTATION IS USED TO EXPRESS THE EQUILIBRIUM AND COMPATIBILITY CONDITIONS. THE SOLUTION IS ILLUSTRATED BY CONSIDERING THE FORCES IN TWO SHINGLE JOINTS. IT IS BELIEVED THAT THE THEORETICAL SOLUTION CAN BE USED TO CHECK THE LOAD DISTRIBUTION IN THE LARGE TEST JOINTS. ALSO IT SHOULD BE EXTENDED INTO THE INELASTIC REGION. /AUTHOR/

• Supplemental Notes:
  • Hpr, 340.2, 66-2 ST
• Corporate Authors:

  Lehigh University

  Bethlehem, PA  United States  18015

  Louisiana Department of Highways

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

  Bureau of Public Roads /US

  400 7th Street, SW
  Washington, DC  United States  20590
• Authors:
  • Yoshida, N
  • Fisher, J W
• Publication Date: 1968-6

Subject/Index Terms

• TRT Terms: Alternatives analysis; Axial loads; Bolted joints; Bolts; Butt joints; Continuous girder bridges; Elasticity (Mechanics); Force; Highway bridges; Joints; Lap joints; Length; Load transfer; Rivets; Simulation; Specimens; Splice plates; Tension tests; Truss bridges
• Uncontrolled Terms: Elongation; Slippage
• Old TRIS Terms: Elastic theory; Full scale specimens; Joint; Riveted joints
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00207882
• Record Type: Publication
• Source Agency: Bureau of Public Roads /US
• Files: TRIS, STATEDOT
• Created Date: Nov 29 1994 12:00AM