In this paper, the energy flux in a pile modelled as an elastic shell, is studied theoretically and experimentally. Based on analysis, new procedure proposed to quantify installation efficiency. This of importance for vibratory foundations offshore wind turbines it believed be first that relies directly propagating down rather than supplied by shaker. The approach tested piles installed two dis...

Offshore aquaculture is increasingly viewed as a mechanism to meet growing protein demand for seafood, while minimizing adverse consequences on the environment and other uses in the oceans. However, despite growing interest in offshore aquaculture, there appears to be no consensus as to what measures commonly define an offshore site or how effects of offshore aquaculture—relative to more nearsh...

This study examines the influence of impact-driven installation on subsequent horizontal monotonic response small-scale monopiles by using a large-beam geotechnical centrifuge at 100g. A special device including hammer was developed to install open-ended 50 mm in diameter an embedment depth 250 flight, and then apply lateral loading monopile head without stopping centrifuge. The global local re...

In order to understand the economic feasibility of an offshore wind farm, this paper analyzed differences in LCOE (levelized cost energy) according support type and construction method substructure terms sensitivity analysis was conducted main components LCOE. As for site be studied, Southwest Offshore Wind Farm selected, capital expenditures were calculated size farm installation unit. a resul...

Suction caissons are widely used foundations in offshore engineering. The change excess pore pressure and seepage field caused by penetration suction significantly affects the soil resistance around caisson wall tip, also deformation of within adjacent to caisson. This study uses Arbitrary Lagrangian–Eulerian (ALE) large solid-fluid coupled FEM investigate changes during process installation sa...

Screw piles have been used to support a variety of structures due their ease installation and high axial capacity. Recently, screw proposed as an alternative foundation solution for offshore renewable quiet or silent installation. Due variable geometry, design prediction requirements its effect on in-service capacity may be challenging. In this research study, the discrete-element method (DEM) ...

When a jack-up installed at a clay location and then leaves; it can create several meter deep footprints. In case of soft clay, the spudcan may have actually penetrated much deeper than the observed footprints. When the penetrated spudcan is pulled out, much of the soft remolded clay will flow around it and go back into the hole. This event, leaving a deep region of disturbed soil. The disturbe...

Offshore photovoltaic energy is possibly the most important future step in harnessing of solar energy. Since no long-term offshore installation exists to date, various unknowns are still present, creating a research gap. For instance, floating structures will have some type response incoming waves. This highly dependent on design structure. effect insolation systems installed structures. presen...