In certain condition

the shallow water wave may emerge in solitary wave form

interacting with offshore structures. Based on wave reflection theory and Biot wave seepage consolidation theory

the analytical solutions of the reflected solitary wave potentials and the solitary wave-induced seepage pressures inside permeable elastic seabed are derived by applying the eigenfunction expansion approach

and the wave-induced lift force and overturning moment caused by the seepage pressure on the bottom of the vertical breakwater are accordingly calculated. The results show that the variation of sea and seabed conditions and breakwater geometry condition may have some influence on wave-induced seepage uplift force and overturning moment. The solitary wave-induced seepage effects may have the same order of magnitude as the direct horizontal wave effects. Compared with the results from small amplitude wave theory

the solitary wave theory can reflect shallow wave nonlinear effects.