A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Development of Wave and Surge Atlas for the Design and Protection of Coastal Bridges in South Louisiana
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.
Development of Wave and Surge Atlas for the Design and Protection of Coastal Bridges in South Louisiana
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.
Development of Wave and Surge Atlas for the Design and Protection of Coastal Bridges in South Louisiana
D. M. Sheppard (author) / P. E. Dompe (author) / M. S. Gosselin (author) / H. Demir (author)
2015
260 pages
Report
No indication
English
Meteorological Data Collection, Analysis, & Weather Forecasting , Structural Analyses , Construction Equipment, Materials, & Supplies , Meteorological Instruments & Instrument Platforms , Oceanographic Vessels, Instruments, & Platforms , Waves forces , Storm surge , Atlas , Louisiana , Severe tropical storms , Hurricanes , Development , Coastal area , Bridge superstructures , Ocean Engineering Associates(OEA)
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