Abstract
Large-scale laboratory experiments were conducted to validate a Biot consolidation model for cyclic loading of layered seabeds. A three-layered horizontal soil system was modelled as a fine sand covered by a gravel overburden with various geotextiles separating the two unique geologic materials. Soil response was monitored with longitudinal and depth profiled pressure measurements. Monochromatic wave testing conditions were generated for shallow to deep water waves. Experimental results verified the theoretical model, yielding a pore pressure response which was linear with respect to wave amplitude and which decayed hyperbolically with depth. Higher frequencies showed increased depth attenuation. All geotextiles tested functioned to maintain a sharp interface between the soil layers but were shown to be hydraulically transparent.
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