波浪作用下有孔粘弹性海底的响应

本文提出了一种有孔粘弹性底面模型。根据Biot的三维固线理论,讨论了波浪作用下有孔粘弹性底面中孔隙水压力响应和固体颗粒承受的有效应力的响应。若忽略粘性,本文的模型则退化到yamamoto的有孔弹性底面模型。从物理意义来说,本文提出的模型更全面合理。

RESPONSES INDUCED BY WAVE IN A PORO-VISCOELASTIC SEABED

In this paper, a linear analytic solution for wave-induced responses in a porous seabed is presented for the case where the soil beneath the water is regarded as poro-viscoelastic solid of infinte depth. Exact solutions ior the pore-water pressure and the displacements of the porous medium are obtained in a closed form. The theoretical results indicate that the bed response is strongly influenced by the compressibility of pore water, the permeability and shear modulus of the soil, as well as the viscosity of the soil. By neglecting the viscosity oi the soil, the present solution approaches one obtained by Yamamoto (1978) .