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Pseudo-dynamic analysis of seawall considering non-breaking wave force

This paper presents the stability determination of seawall, supporting submerged cohesion-less backfill under combined actions of earthquake and non-breaking wave forces. The pseudo-dynamic approach is adopted for the calculation of seawall stability using limit equilibrium method against sliding, overturning and bearing failure. Parametric study shows significant effects of B/H ratio, pore water pressure ratio, horizontal seismic acceleration coefficient, ratio of height of water on seaward side to the wall height, ratio of non-breaking wave height to height of water on seaward side, wall friction angle, ratio of height of water on landward side to the wall height on stability of seawall at both restrained and free water cases, against all failure modes. Present result is compared with results available in literature. The results are presented in non-dimensional forms and design charts are provided to calculate factor of safety for design of stability of seawall against different failures under earthquake forces combined with non-breaking wave forces.