Dynamic response of the seabed around breakwaters to waves

A numerical model was developed to analyze the seabed response around breakwaters and the main factors affecting breakwater stability and to stabilize coastal seabed.The 2-D Biot's dynamic consolidation equations were solved using the element-free Galerkin method to solve the transient response of the pore water pressure,the soil skeleton displacement,and the effective stresses in the seabed around the breakwaters resulting from waves.The results of the seabed with standing wave agree well with experimental data.The results show that the seabed stability is not only determined by the wave pressures acting on the seabed surface,but also by the forces applied by the breakwaters to seabed.The breakwater base frictional forces have little influence on the size of the liquefied seabed.The breakwater weight and the horizontal wave forces most strongly affect the liquefaction.