The interactions between free surface waves and layers of cohesive sediments including wave height attenuation and mud movement are of great importance in coastal and marine engineering. In this study, the results from a new analytical model were compared with those from literature experimental works and analytical models in terms of wave height dissipation rate and mud velocity. It was found that the new model provided good agreements in the case of coexisting waves and currents, while the literature model of Ng (explained in Section 2 of the text) —assuming the mud layer as a highly viscous layer with high shear rates—matched well with the experimental data for high viscosity (mud viscosity, νm = O [0.01 m2/s]). In addition, it was found that the new model is able to successfully simulate particles velocity in the presence of co-current.
One of the reasons of life shortening of pavements operation is designing regardless of their administrative facts. The amount of transferred load between the layers depends on various factors such as the degree of adhesion and internal friction between the layers. If these layers limit by using proper bonding and sufficient density between the layers, they act integrated. In this study we evaluate the various pavement failures due to the possibility of friction under various loadings. Flexible pavement failure criteria are intended the vertical strain on the subsoil and analytically calculate the strain tolerance and pavement life of this strain were compared. According to these studies, shortening the life of pavements with limited layers and without internal friction has been determined compared to the pavement with internal friction.
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