Wave forces and wave run-up on a truncated rectangular column based on the hydrodynamic experiment

Abstract

The column-type structures are commonly used in the substructure of coastal engineering, including wind turbines, coastal platforms, and coastal bridges, and the wave forces and wave run-ups on these substructures are important phenomena that need to be considered in the design of coastal structures. In the present work, a series of experiments are conducted to investigate the wave forces and wave run-ups on the truncated rectangular column. The effect of wave parameters and wave incidence angles on the wave forces on the truncated rectangular column are discussed. A thorough understanding of the physics of the wave scattering and wave diffraction around the rectangular column during wave-structure interactions is performed. The reliability and accuracy of several commonly used wave force prediction formulas for estimating rectangular structures have been tested based on experimental data. Similarly, various methods to analyze the wave run-up on columns are compared with experimental measurements of wave run-ups. Based on the comparison, a new formula is proposed for the prediction of wave run-ups on the truncated rectangular column. Results show that the wave parameters and incident wave angle have a significant influence on the wave forces on the truncated rectangular column. The proposed formula in calculating the wave run-ups on the truncated rectangular column presents high accuracy and covers a wide range of wave steepness, incident wave angles, and structural scales.