Development of wave and surge atlas for the design and protection of coastal bridges in South Louisiana : [research project capsule].

Details

• Creators:
  Sheppard, D. Max
• Corporate Creators:
  Louisiana Transportation Research Center
• Subject/TRT Terms:
  • Coasts
  • Bridges
  • Storm surges
  • Hurricanes
  • Water waves
  • Wave height
  • Geographic information systems
  • Bearing capacity
• Publication/ Report Number:
  15-1ST
• Resource Type:
  Brief
• Geographical Coverage:
  Louisiana
• Corporate Publisher:
  Louisiana Transportation Research Center
• Abstract:
  The recently completed Louisiana Department of Transportation and Development ; (DOTD) Storm Surge and Wave Atlas contains signifi cant hydraulic information that will ; be useful in analyzing storm surge and wave forces on existing and new coastal bridges. ; The current Atlas contains surge and wave information for storms with a 1% chance of ; occurrence each year (100-year return interval). This information is useful for computing ; wave loads on bridge superstructures. However, many issues encountered by DOTD ; engineers require other frequency meteorological/oceanographic information (e.g., ; 5-, 10-, 25-, 50-year return intervals). For instance, engineers may design a temporary ; facility (a detour bridge) based on a 5-year return interval (20% chance of occurrence ; each year). Bridges whose service life is approaching their design life may undergo ; retrofi tting based on a return interval diff erent from the 100-year return interval. ; The information needed for these designs exists in the Level III analysis solution fi les ; developed in the recently completed Wave and Surge Atlas (Phase I) project. ; Because of the size of the study area and the amount of information available in the ; recently completed Surge/Wave Atlas (GIS database) for the 100-year return interval, it is ; prudent to provide a separate GIS database for each of the other desired return intervals. ; Therefore, this work will produce a separate GIS database for a 50-year return interval ; (2% chance of occurrence each year), a 25-year return interval (4% chance of occurrence ; each year), a 10-year return interval (10% chance of occurrence each year), and a 5-year ; return interval (20% chance of occurrence each year).
  More +
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/29003/dot_29003_DS1.pdf
• File Type:
  [PDF - 140.45 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:cc919ba715d90ef88a1f49749beaea4606c0c132cdc1d144b4a57fa81d918c73