Feasibility of curved pipe pull operations: A research based on a numerical model and physical experiments

Due to often existing subsea infrastructure or challenging seabed conditions, engineers are forced to design newnearshore pipeline trajectories that are not always in a straight line. Since subsea tie-in operations are often complex and relatively expensive, alternative methods like pulling pipelines into a curve are worthwhile. By means of this...

Capturing 3D Continuum Effects in a 1D Soil-Structure Interaction Model for Seismic Analysis of Offshore Wind Turbines

Offshore wind energy is considered a necessary energy resource, that may stimulate the transition from fossil fuels. Following the successful development in Western Europe, offshore wind is quickly gaining momentum in the Asia-Pacific region. At variance with North-Sea based offshore wind turbines (OWTs), structures installed in the Asia-Pacific...

3D FE seismic analysis of a monopile-supported offshore wind turbine in a non-liqueable soil deposit

This work presents a numerical study on the dynamic response of monopile-supported offshore wind turbines (OWTs) under seismic loading conditions. For this purpose the realistic design ofa 8 MW OWT is considered as ideally located in a layered, non-liqueable site off the coast of Japan. This choice allowed to employ available site...

Three-dimensional finite element analysis of offshore jack-up structures accounting for non-linear soil-structure interaction

Jack-up structures are widely used in the offshore industry. Not only in the field of oil and gas, but also in the installation for offshore wind turbines. These jack-up structures typically consist of three trusswork legs, where the foundation is formed by inverted conical cones that are penetrated into the soil, called spudcans. The spudcans...