Hydraulic tests on a Xblocplus armoured coastal revetment

Date

2024-9

Author

Korkmaz, Alperen Mülayim

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In the present study, the performance of recently developed XblocPlus and XblocPlusOvertop units is investigated by physical model experiments for different coastal revetment cross-sections at METU Coastal and Ocean Engineering Laboratory. The interlocking of XblocPlus units is primarily designed to improve armor layer stability compared to Xbloc units, whereas XblocPlusOvertop units aim to reduce wave overtopping discharges. The cross-sections are constructed in the wave flume on a flat region following a 1:30 foreshore bottom slope. The face slopes of the revetment sections are kept constant as 1:1.5 for all cases. Different water depths, crest heights, crest widths, toe units, and armor layer configurations are tested under eight different wave conditions to observe the performance of a coastal revetment in detail. During the physical model experiments, the stability of the armor and toe layer, forces acting on the crown wall, mean and individual wave overtopping discharges, overtopping flow thickness, and overtopping-induced scour at the lee side of the structure are observed simultaneously. Differences in the hydraulic performances of cross-sections constructed with and without XblocPlusOvertop units under various experimental conditions are discussed, highlighting the effects on the toe region.

Subject Keywords

Coastal revetment, XblocPlus, XblocPlusOvertop, Hydraulic stability, Overtopping

URI

https://hdl.handle.net/11511/111322

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Graduate School of Natural and Applied Sciences, Thesis