Investigation of wave induced pressures on a raised vertical sea wall at various set back positions

Poynter, Oliver Thomas (2016) Investigation of wave induced pressures on a raised vertical sea wall at various set back positions. MEng dissertation, University of Portsmouth.

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    The progress of understanding of the interaction between coastal structures and the sea has been greatly improved and well documented. However, the present state of understanding concerning set back walls on a vertical impermeable structure is somewhat lacking. As currently, there are no generally applicable methods, available to designers, for predicting wave induced pressures on raised sea walls at various set back positions, independent of deep water rubble mound breakwaters and vertical caissons. The methods used to design set back walls were originally developed for deep and intermediate water wave conditions, however these methods over predict the design wave loads for shallow water wave conditions. Consequently, designs can often be over engineered, due to the reliance on conservative assumptions and methodologies, which subsequently increases the financial cost to construct set back walls.
    Research into the relationship between set back wall position and wave induced pressures has given an insight into the potential to reduce design requirements, therefore decreasing the quantity of material required for construction. Percentile decreases between current prediction methods and experimental results has been found to have a reduction up to 70%. This is an initial study into the potential for further research and application of a reduction factor to current design prediction methods for wave induced loadings on a set back wall at various set back positions.

    Item Type: Dissertation
    Departments/Research Groups: Faculty of Technology > School of Civil Engineering and Surveying
    Depositing User: Jane Polwin
    Date Deposited: 17 Aug 2016 16:02
    Last Modified: 17 Aug 2016 16:02

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