15 research outputs found

    Die bemessung der Außenböschung von Seedeichen unter Anzats des festigkeitssteigernden Einflusses der Grasnarbe

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    Describes relation between wave impact and damage to grass layers

    Design levels for offshore structures. State-of-the-art and instantaneous pore-pressure model

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    The report contributes to the development of an integrated design approach of monolithic (vertical) coastal structures commonly used in shore protection and harbour construction. A review is given on approaches using dynamic and probabilistic analysis, based on physical understanding of the hydraulic, geotechnical and structural processes involved in the wave-structure interaction for stability evaluation of coastal structures. Foundation analysis may be approached in two stages: feasibility (or so-called desk-top) study and more sophisticated studies using elastic theory, finite element analysis and boundary element method. The presented 1D finite element solution for the wave-induced pore pressure and soil matrix displacements is a convenient tool in solving the problem of instantaneous pore pressure. (WEN)SIGLEAvailable from TIB Hannover: RN 7542(63) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

    Some aspects on subsoil failure of vertical breakwaters

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    Within this report on a thin rubble mound on top of a subsoil on coarse sand or gravel the relevance of particular load cases and failure modes for the stability of a vertical breakwater has been investigated. Six failure modes and three load cases were taken into account. After carrying out an extensive parameter study it is apparently that bearing capacity, rotation bearing capacity and sliding beneath the caissons bottom are the most important failure modes. It has been found out that wave crest is the most relevant load case. But wave through should not be neglected at all. Especially the eccentricity of caissons' dead load, the wave height and the shear strength of the subsoil determine the relevance of different load cases and failure modes. (orig.)SIGLEAvailable from TIB Hannover: RN 7542(83)+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

    High frequency excited pacemaker with energy storage

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