Dynamic load environment of bridge-mounted sign support structures : executive summary report.

Details

• Creators:
  Huckelbridge, Arthur A.
• Corporate Creators:
  Case Western Reserve University. Department of Civil Engineering
• Corporate Contributors:
  Ohio. Dept. of Transportation ; United States. Federal Highway Administration
• Subject/TRT Terms:
  • Traffic signs
  • Live loads
  • Structures
  • Bridges
  • Traffic signs and signals--Supports--Ohio
  • Bridges--Live loads--Ohio
• Publication/ Report Number:
  ST/SS/05-002
• Resource Type:
  Tech Report
• Geographical Coverage:
  Ohio
• Edition:
  Executive summary report.
• Corporate Publisher:
  Case Western Reserve University. Dept. of Civil Engineering
• Abstract:
  A bridge-mounted welded aluminum sign support ; structure suffered a fatigue failure on Interstate ; Route 77, just south of Cleveland, OH. The sign ; support structure ; was a 72 foot ; span, bridge-type, ; four chord ; space truss, ; comprised entirely ; of tubular ; members. The ; failure was ; located at a diagonal to chord joint, initiating at the ; weld toe and progressing completely around the ; circumference of the chord until fracture of the ; chord member occurred. ; Bridge-type sign structures typically have a high ; enough natural frequency that wind-induced ; vibrations are not a major ; design concern. For that ; reason an investigation was ; undertaken to arrive at an ; explanation of the fatigue ; failure. ; This investigation involved a ; combination of finite ; element analysis, field testing under actual truck ; loading, and laboratory fatigue testing of remnants ; of the actual failed structure.
  More +
• Format:
  PDF
• Funding:
  134153
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/17528/dot_17528_DS1.pdf
• File Type:
  [PDF - 83.00 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:20e686ddfbbbf4cbee41260ef9d79d7f590fc4ac1679cddf233ada2d6a702554