Calculation of Extreme Wave Loads on Coastal Highway Bridges

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dc.contributor.advisor Jin , Jun en_US
dc.contributor.committeeMember Zhang , Jun en_US
dc.creator Meng , Bo en_US
dc.date.accessioned 2010 -01 -14T23 :55 :05Z
dc.date.accessioned 2014 -02 -19T19 :30 :02Z
dc.date.available 2010 -01 -14T23 :55 :05Z
dc.date.available 2014 -02 -19T19 :30 :02Z
dc.date.created 2008 -12 en_US
dc.date.issued 2010 -01 -14 en_US
dc.identifier.uri http : / /hdl .handle .net /1969 .1 /ETD -TAMU -2008 -12 -254
dc.description.abstract Coastal bridges are exposed to severe wave , current and wind forces during a hurricane . Most coastal bridges are not designed to resist wave loads in such extreme situations , and there are no existing analytical methods to calculate wave loads on coastal highway bridges . This study focuses on developing a new scheme to estimate the extreme wave loads on bridges for designing purpose . In order to do this , a 2D wave velocity potential model (2D Model ) is set up for the deterministic analysis of wave force on bridge decks . 2D Model is a linear wave model , which has the capability of calculating wave velocity potential components in time domain based on wave parameters such as wave height , wave period and water depth , and complex structural geometries . 2D Model has Laplace equation as general equation . The free surface boundary , incoming and outgoing wave boundary conditions are linearized , decomposed first , and then solved by the finite difference method . Maximum wave forces results calculated by the linear 2D Model are compared with results from CFD software Flow3D that is using Navier Stokes theory up to the 5th order ; and 2D Model is validated by comparing results with experiment data . A case study is conducted for calculating extreme wave forces on I -10 Bridge across Escambia Bay , Florida during Hurricane Ivan in September 2004 .SWAN model is adapted to investigate the parameters of wave heights and wave periods around bridge sites . SWAN model has the capability of predicting or hindcasting significant wave heights and wave periods as long as the domain and input parameters are given . The predicted significant wave heights are compared with measurements by Buoy Station 42039 and 42040 nearest to Escambia Bay . A new prediction equation of maximum uplift wave forces on bridge decks is developed in terms of wave height , wave period , water depth , bridge width , water clearance and over top water load . To develop the equations , the relationship is investigated between maximum uplift wave forces and wave parameters , water clearance , green water effects and bridge width . 2D Model is used for up to 1886 cases with difference parameters . Flow3D model is adopted to determine coefficients of water clearance and green water effects , which cannot be calculated by 2D Model . en_US
dc.format.mimetype application /pdf en_US
dc.language.iso en _US en_US
dc.subject wave loads en_US
dc.title Calculation of Extreme Wave Loads on Coastal Highway Bridges en_US
dc.type Book en
dc.type.genre Electronic Dissertation en_US

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Calculation of Extreme Wave Loads on Coastal Highway Bridges. Available electronically from http : / /hdl .handle .net /1969 .1 /ETD -TAMU -2008 -12 -254 .

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