Experimental study of wave-induced dynamic response within the seabed around an impermeable sloping breakwater

Sloping breakwaters are commonly used to mitigate impact forces exacted by ocean waves and maintain a stable water level in harbors, ensuring safe ship berthing. The instability of breakwaters caused by soil liquefaction under wave actions remains a challenging engineering problem. Therefore, it is important to investigate the dynamic characteristics of the seabed soil around sloping breakwaters under wave actions to assess their stability. In this study, experiments are conducted to examine the variation of pore pressure within seabed soil with different soil properties under wave loadings and to analyze the phenomenon of potential soil liquefaction around sloping breakwaters. Results show that the maximum excess pore pressure around sloping breakwaters increases with the increase of wave height and wave period and decreases with the increase of water depth. In addition, a comparative analysis is carried out to examine the differences in pore pressure characteristics between seabed areas with and without breakwaters under the same hydrodynamic conditions. • Investigate dissipation of wave energy and spatial distribution of pore pressure around the breakwater. • Analyze oscillation and accumulated pore pressure within silty seabed subjected to wave action. • Explore the influence of soil properties on the dynamic response within the seabed around submerged breakwaters.