“Computational geomechanics—with special reference to earthquake engineering” by O. C. Zienkiewicz, A. H. C. Chan, M. Paston, B. A. Schrefler and T. Shiomi

Behaviour of geotextile filters in armoured slopes subjected to the action of waves

Hybrid modeling of pore pressure damping in rubble mound breakwaters

Wave-induced dynamic pressure under rubble mound breakwaters with submerged berm: an experimental and numerical study

A simple model for predicting the vertical distribution of wave-induced pore pressures inside submerged porous structures is presented. A Boussinesq-type model coupled with a Darcy–Forchheimer equation was used to derive depth-averaged velocities. Then their profile was obtained by a semi-empirical approach based on energy considerations applied on a vertical distribution of the particle velocities induced by nonlinear waves in a free field. Laboratory measurements of hydrodynamic pressures were undertaken in a flume for breaking and non-breaking regular waves. The proposed model was compared with these measurements and to the results of a Reynolds Averaged Navier–Stokes equations model. Good agreement of the proposed model with the experiments was found and very good behaviour when compared with the RANS code. Increased pore pressures were identified during the experiments close to the downstream slope of the mound and a tendency of the pressures to increase with wave steepness. These effects were satisf...

Wave-induced pore pressures in submerged rubble-mound breakwaters simulated by a compound Boussinesq model

Laboratory tests have been conducted to investigate flow motion and pore pressure attenuation within rubble mound breakwater. A typical multi-layered rubble mound was tested in a wave flume under regular and random wave conditions. Measurements of wave pressures have been used to validate semi-theoretical and numerical approaches describing wave damping in porous media. Data are to be used to define a reliable model able to predict the behaviour of porous structures under wave attack. The ultimate aim of the research initiative is to define an innovative design procedure for coastal and maritime structure coupling hydro-dynamic with geotechnical models, and thus to assess the overall structure stability and the foundation soil liquefaction risk.

Scott Dunn

Papers

Wave pressures in and under rubble mound breakwaters