High-Capacity Flexpost Rockfall Fences

Details

• Creators:
  Hearn, George
• Corporate Creators:
  University of Colorado Boulder
• Corporate Contributors:
  Colorado. Department of Transportation ; United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  • Rockfalls
  • Design
  • Gabions
  • Height
  • Prototype tests
  • Simulation
  • Steel wire fabrics
  • Fences
  • Rockfall Fences
  • Rockfall Barriers
  More +
• Publication/ Report Number:
  CDOT-CU-94-13
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States ; Colorado
• Edition:
  Final Report
• Corporate Publisher:
  Colorado. Department of Transportation
• Description:
  Designs of high-capacity rockfall fences are developed through numerical simulations of rockfall impacts and through a prototype test. Based on the existing design of the Colorado Department of Transportation flexpost fence, three designs at 80,000 ft-lb (108,480 J) rockfall capacity are developed. The three designs provide for fences of 10, 16 and 24 ft (3.05, 4.88 and 7.32 m) height, and all use steel gabion mesh for fence fabric. A fourth design using steel cable net for fabric on a 10-ft (3.05-m) tall fence was constructed as a full-scale prototype and tested with freely falling boulders. The cable net design has a rockfall capacity of 125,000 ft-lb (169,500 J). A description of flexpost fences, maximum forces in components of fences, sizes of components for the four designs of fences, computer models for numerical simulations, and results of simulations are presented. A summary of prototype tests is presented. A list of suppliers of cable and wire mesh products is provided.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/93906/dot_93906_DS1.pdf
• File Type:
  [PDF - 11.02 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:e50fc0380a47d1b4bb6fe62c790b9afe304fb74ffae81f54e496f04e97d66af508c3bfb9971121d3a47cd60d6bf9e02aa82050aba5769103daea8d89228a32b0