Abstract
In this study, a numerical model for wave-induced horizontal non-homogeneous seabed response is developed. Two new coefficients are proposed to describe the influence degrees of horizontal non-homogeneous soil property. The effects of wave condition and adjacent soil properties on the local soil response are investigated. Numerical results show that the influence range of the horizontal non-homogeneous soil property increases with the increase of wave period, wave height and soil permeability, and increases with the decrease of soil air content.
Highlights
Wave-induced seabed response is an important factor to be considered in coastal engineering
When wave propagates over porous seabed, pore pressure is generated with fluctuation and attenuation in the vertical direction
Based on Biot’s equations (QS equation), the analytical solutions for pore water pressure, soil stresses, soil displacements with an infinite seabed depth were given by Yamamoto et al (1978) and Madsen (1978)
Summary
Wave-induced seabed response is an important factor to be considered in coastal engineering. Based on Biot’s equations (QS equation), the analytical solutions for pore water pressure, soil stresses, soil displacements with an infinite seabed depth were given by Yamamoto et al (1978) and Madsen (1978). Following their studies, Hsu and Jeng (1994) considered the seabed of finite depth under short crest wave system. Ulker (2009) extended their solutions under plane strain conditions and clarified the application range of the three different approximations (QS equation, PD equation and FD equation) These studies all assumed a uniform seabed property, while seabed is often non-homogeneous in the real world. The model is used to investigate effects of wave and soil parameters on the horizontal non-homogeneous soil response
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