Advanced bridge safety initiative: phase 2, task 1 - rivet testing of rivets taken from Maine truss bridge.

Details

• Creators:
  Tomlinson, Scott ; Davids, William
• Corporate Creators:
  University of Maine. Advanced Structures and Composites Center
• Corporate Contributors:
  Maine. Dept. of Transportation
• Subject/TRT Terms:
  Bridge Load Rating Live Loads Load Factor Load Tests Rivet Testing Steel Bridges Truss Bridge Rivets Truss Bridges
• Publication/ Report Number:
  ME 16-14 ; 16-21-1332
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States ; Maine
• Corporate Publisher:
  Maine. Department of Transportation. Transportation Research Division
• Abstract:
  The Maine Department of Transportation (MaineDOT) has removed 25 rivets from an existing, older truss bridge.
  
  Many such truss bridges have low rating factors as determined using Federal Highway Administration (FHWA)
  
  and the American Association of State Highway and Transportation Officials (AASHTO) guidelines due to the
  
  assumption of conservatively low rivet strength properties in the absence of known properties. To provide the
  
  MaineDOT with better information regarding rivet properties, The University of Maine (UMaine) has tested the
  
  rivets in tension to determine their strength properties. Work conducted under this task included assessing the best
  
  test method based on existing literature, fabricating test fixtures, machining test specimens from each rivet,
  
  conducting the strength tests, determining rivet strength properties from the test data, and reporting the test
  
  results to the MaineDOT in this report.
  
  Rivet testing was conducted according to ASTM F606 Standard Test Methods for Determining the Mechanical
  
  Properties of Externally and Internally Threaded Fasteners, Washers, Direct Tension Indicators, and Rivets [and ASTM E8 Standard Test Methods for Tension Testing of Metallic Materials with variations as noted in this
  
  report. Rivets were machined to produce tension specimen with threaded grips at each end and a turned down
  
  shank with dimensions adjusted from the standards to match provided rivet specimen. Rivets were tested
  
  in tension and mean yield strength (0.2% offset) was found to be 43.7 ksi and mean ultimate strength was found
  
  to be 69.6 ksi.
  
  
• Format:
  PDF
• Funding:
  Contract # 20160617*4564
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:4edcef72359a998dff67a3f01ec203008328349b74f8f9c130baefc817ad81d7
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/30968/dot_30968_DS1.pdf
• File Type:
  [PDF - 3.84 MB ]