Development of wave and surge atlas for the design and protection of coastal bridges in South Louisiana.

Details

• Creators:
  Sheppard, D. Max ; Dompe, Philip E. ; Gosselin, Mark S. ; Demir, Hüseyin
• Corporate Creators:
  Ocean Engineering Associates, Incorporated
• Corporate Contributors:
  United States. Federal Highway Administration ; Louisiana. Dept. of Transportation and Development
• Subject/TRT Terms:
  Bearing Capacity Bridges Coasts Geographic Information Systems Hurricanes Storm Surges Water Waves Wave Height
• Publication/ Report Number:
  FHWA/LA.528
• Resource Type:
  Tech Report
• Geographical Coverage:
  Louisiana
• Corporate Publisher:
  Louisiana Transportation Research Center
• Abstract:
  This report summarizes the work performed by Ocean Engineering Associates, Inc. (OEA), a division
  
  of INTERA Inc. (OEA/INTERA), for Louisiana Department of Transportation and Development
  
  (DOTD) on (1) the development of a Wave and Surge Atlas for coastal Louisiana and (2) the
  
  determination of the vulnerability of selected DOTD coastal bridges to design storm surge and wave
  
  loads. In this study, the bridge is considered to be vulnerable if the surge/wave forces and moments
  
  (with the appropriate load factors) exceed the resistive forces and moments created by the dead weight
  
  of the superstructure for any of the spans. A Level III storm surge/wave analysis was performed to
  
  provide the design water level and wave parameters needed to compute the loads. This analysis entailed
  
  (1) the hindcasting of 50 of the most severe tropical storms and hurricanes that have affected Louisiana
  
  coastal waters over the past 160 years, and (2) performing extreme value analyses on water elevation
  
  and wave heights throughout the area covered by the model to obtain 100-year design met/ocean
  
  conditions. To increase the data set for the extreme value analyses, a select number of the hindcasted
  
  storm paths were shifted to the right and left of the actual path and the modified-path storms
  
  hindcasted. This resulted in 124 hindcasts to perform. The results from the extreme value analyses were
  
  used to create a Wave and Surge Atlas. The atlas is presented in a GIS database for ease of access and
  
  use. The information in the GIS database has many applications beyond that of providing the
  
  conditions needed for computation of surge/wave loads on the bridge superstructures.
  
  
• Format:
  PDF
• Funding:
  LRTC No. 10-4ST ; SIO No. 30000118
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:58f26b64bdb08694b7ade416c6910122eefee8ac9a5a40f6e9dce7e4369b8923
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/28639/dot_28639_DS1.pdf
• File Type:
  [PDF - 13.14 MB ]