Feasibility Study of a Radial-Flow Energy Dissipator for Culvert Outlets

Details

• Creators:
  Moore, Walter L.
• Corporate Creators:
  University of Texas at Austin. Center for Highway Research
• Corporate Contributors:
  Texas Highway Department ; United States. Department of Transportation. Federal Highway Administration. Bureau of Public Roads
• Subject/TRT Terms:
  • Culvert outlets
  • Dissipation
  • Erosion control
  • Hydraulic jump
  • Scour
  • Stilling basins
  • Bridges
  • Feasibility analysis
• Publication/ Report Number:
  3-5-66-92
• Resource Type:
  Tech Report
• Geographical Coverage:
  Texas ; United States
• Corporate Publisher:
  University of Texas at Austin. Center for Highway Research
• Abstract:
  The cause of the erosion is understood, but to date most methods for controlling it have met with limited success. By its nature a culvert concentrates the flow of a stream into a narrower passage than the natural stream channel. For culverts on steep grades outlet velocities may range from 10 feet per second up to 30 feet per second. In order to prevent erosion at the culvert outlet these high velocities must be reduced and flow should be spread outward toward the normal width of the channel. The conventional stilling basin is not effective in increasing the width of the flow before it discharges into the natural channel. It is believed that a more effective and efficient sti11ing basin can be designed if a way is found to cause the flow to spread laterally before the hydraulic Jump occurs. The depths would then be reduced and the structure would be less costly. The present investigation was undertaken to explore the feasibility of developing a type of sti11ing basin which would be effective in causing the flow to spread rapidly as a means of achieving more efficient energy dissipation and scour control.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/80994/dot_80994_DS1.pdf
• File Type:
  [PDF - 686.61 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:81af2dabd41079635d4af8ceecb0f2f5303156a4ce788a5b80c766b3e7306a4d086e40c70d81449629e58051abe82d99b4455bd30925f2f6ca96ae223b043ed4