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Hermann Moshagen

Bio: Hermann Moshagen is an academic researcher from Norwegian Institute of Technology. The author has contributed to research in topics: Lateral earth pressure. The author has an hindex of 1, co-authored 1 publications receiving 74 citations.

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TL;DR: In this article, a theoretical investigation on the transmission of wave induced pressures into a permeable sea bottom has been performed, assuming that the soil water is compressible, while the grain skeleton is assumed rigid, the resulting theoretical model describes an effective mechanism by which the soil permeability affects the pressure transmission.
Abstract: A theoretical investigation on the transmission of wave induced pressures into a permeable sea bottom has been performed. Assuming that the soil water is compressible, while the grain skeleton is assumed rigid, the resulting theoretical model describes an effective mechanism by which the soil permeability affects the pressure transmission.

82 citations


Cited by
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TL;DR: In this article, the problem of the response of a porous elastic bed to water waves is treated analytically on the basis of the three-dimensional consolidation theory of Biot (1941).
Abstract: The problem of the response of a porous elastic bed to water waves is treated analytically on the basis of the three-dimensional consolidation theory of Biot (1941). Exact solutions for the pore-water pressure and the displacements of the porous medium are obtained in closed form for the case of waves propagating over the poro-elastic bed. The theoretical results indicate that the bed response to waves is strongly dependent on the permeability k and the stiffness ratio G/K’, where G is the shear modulus of the porous medium and K’ is the apparent bulk modulus of elasticity of the pore fluid. The earlier solutions for pore-water pressure by various authors are given as the limiting cases of the present solution. For the limits G/K′ → 0 or k→ ∞, the present solution for pressure approaches the solution of the Laplace equation by Putnam (1949). For the limit G/K′→ ∞, the present solution approaches the solution of the heat conduction equation by Nakamura et al. (1973) and Moshagen & Torum (1975).The theoretical results are compared with wave tank experimental data on pore-water pressure in coarse and fine sand beds which contain small amounts of air. Good agreement between theory and experiment is obtained.

567 citations

Journal ArticleDOI
TL;DR: In this article, an analytical solution for the wave-induced soil response is developed for a seabed of finite thickness subject to a three-dimensional (3D) wave system produced by two intersecting waves of equal properties.
Abstract: An analytical solution for the wave-induced soil response is developed for a seabed of finite thickness subject to a three-dimensional (3-D) wave system produced by two intersecting waves of equal properties. These 3-D exact solutions for the pore pressure and effective stresses, proposed for a non-cohesive soil matrix of finite depth in a homogeneously unsaturated and anisotropic condition, are readily reducible to the limiting two-dimensional cases of progressive and standing waves, for which no explicit solutions are available for finite thickness. The effects of soil isotropy, degree of saturation, seabed thickness and grain size on the wave-induced pore pressure are discussed in detail. The explicit solutions presented in this study for the wave-induced pore pressure and effective stresses should benefit the laboratory experiments and field monitoring programs carried out in soil of finite depth.

276 citations

Journal ArticleDOI
TL;DR: In this paper, the results of an experimental study where the sinking and floatation of a pipeline and other objects (namely, a sphere and a cube) in a silt bed was investigated.

178 citations

Book
17 Oct 2012
TL;DR: In this article, a dynamic analysis for wave-induced seabed interactions is presented, showing that wave-driven seepage flux in Marine Sediments increases with the number of waves.
Abstract: Wave-Induced Seabed Response in an Isotropic Seabed.- Wave-Induced seabed Instability.- Cross-Anisotropic Soil Behavior.- Non-Homogeneous Seabed.- Wave-Driven Seepage flux in Marine Sediments.- Dynamic Analysis for Wave-Seabed Interactions.- Wave-Induced Pore Pressure Accumulation in Marine Sediments.- Dynamic Analysis for Wave-Seabed Interactions.- Dynamic Analysis for Wave-Seabed Interactions.- Wave Propagation over Coulomb-Damped Seabed.- Wave-Induced Pore Pressure Accumulation in Marine Sediments.- Random wave-induced seabed response 295.- Wave-Induced Progressive liquefaction in a porous seabed.- Poro-Elastoplastic model for Wave-Seabed Interactions.- Response of Seabed to Combined Wave and Current Loading.- ANN model for Wave-Induced Liquefaction 341.- Models for Wave-Seabed-Structure Interaction.

136 citations

Journal ArticleDOI
Dong S Jeng1

136 citations