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

Sheppard, D. Max; Dompe, Philip E.; Gosselin, Mark S.; Demir, Hüseyin; Ocean Engineering Associates, Incorporated

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

2015-02-01
By Sheppard, D. Max ; Dompe, Philip E. ; Gosselin, Mark S. ; ...

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English

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Details:

Creators:

Sheppard, D. Max ; Dompe, Philip E. ; Gosselin, Mark S. ; Demir, Hüseyin

Sheppard, D. Max ; Dompe, Philip E. ; Gosselin, Mark S. ; Demir, Hüseyin Less -
Corporate Creators:

Ocean Engineering Associates, Incorporated
Corporate Contributors:

United States. Federal Highway Administration ; Louisiana. Dept. of Transportation and Development

United States. Federal Highway Administration ; Louisiana. Dept. of Transportation and Development Less -
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

LRTC No. 10-4ST ; SIO No. 30000118 Less -
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:

No Additional Files

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

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