Details:

Alternative Title:
Development of wave and surge atlas for the design and protection of coastal bridges in South Louisiana - phase 2 : final report 568.
Creators:
Sheppard, D. Max ; Dompe, Philip E. ; Gosselin, Mark S. ; Demir, Huseyin
Sheppard, D. Max ; Dompe, Philip E. ; Gosselin, Mark S. ; Demir, Huseyin Less -
Corporate Creators:
INTERA, Inc.
Corporate Contributors:
Louisiana. Department of Transportation and Development
Subject/TRT Terms:
[+]
Analysis Atlases Bridges Coasts Databases Geographic Information Systems Hurricanes Risk Assessment Storm Surge Storm Surges Water Waves Wave Atlas Wave Forces Wave Height
Publication/ Report Number:
FHWA/LA.16/568
Resource Type:
Tech Report
Geographical Coverage:
United States ; Louisiana
United States ; Louisiana Less -
Edition:
Final report
Corporate Publisher:
Louisiana Transportation Research Center
Abstract:
This report summarizes the work performed by INTERA Incorporated (INTERA), for the Louisiana Department of Transportation and Development (DOTD) on Phase 2 of LTRC project No. 10-4ST, “Development of Wave and Surge Atlas for the Design Protection of Coastal Bridges in South Louisiana.” In Phase 1 (Louisiana Transportation Research Center (LTRC) project No. 10-4ST, Final Report 528), a Level III storm surge/wave analysis provided the design water level and wave parameters needed to compute wave loads. This analysis entailed (1) hindcasting 50 of the most severe tropical storms and hurricanes that have affected Louisiana coastal waters over the past 160 years including hindcasting alternative paths for a select number of those storms resulting in a total of 124 hindcasts, and (2) performing extreme value analyses on water elevation and wave heights throughout the area covered by the model to obtain 100-year design meteorological /oceanographic (met/ocean) conditions. The results from the extreme value analyses provided the data for the Wave and Surge Atlas. The atlas is presented in a geographic information system (GIS) database for ease of access and use. Those data provided the input to determine the vulnerability of selected DOTD coastal bridges to design storm surge and wave loads. This phase includes (1) developing parameters for additional return periods (5-, 10-, 25-, and 50-year) from the results of the hindcasted storms in Phase 1; (2) develop a Surge/Wave Atlas for maximum values of the actual hurricane/tropical storm-induced water elevation, wave height and peak period and wind speed for the study area over the past 160 years; (3) developing a Surge/Wave Atlas for maximum values of the actual + path shifted hurricane/tropical storm-induced water elevation, wave height and peak period, and wind speed for the study area over the past 160 years; (4) Developing an American Association of State Highway and Transportation Officials (AASHTO) Wave Load Calculation Program (Visual Basic Program) based on the AASHTO Guide Specifications [1]; (5) providing a training session for DOTD employees so that DOTD will be able to update or modify the program as needed for future code changes; and (6) computing the forces and moments on the remaining spans on the bridges determined to be vulnerable and generate PDF files of the bridge information and the forces and moments along the entire bridge, and adding PDF pop-ups to the locations of all bridges determined to be vulnerable.
Format:
PDF
Funding:
LRTC No. 15-1ST ; SIO No. 30000118
LRTC No. 15-1ST ; SIO No. 30000118 Less -
Collection(s):
US Transportation Collection
Main Document Checksum:
[+]
urn:sha256:d235efb70ecf4e5dd525422c67598660225b7209e5fa08c092e955f86044b850
Download URL:
https://rosap.ntl.bts.gov/view/dot/31290/dot_31290_DS1.pdf
File Type:

Supporting Files

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