Offshore wind is a key part of the change toward renewable energy sources. farm developments are moving to sites that characterized by increased water depths and layered soil profiles, e.g., in North Sea. Suction caisson–based jacked structures expected be increasingly used support turbines at such sites. Experience suction caissons serving as foundations for offshore limited. The mechanisms go...

Seabed trenches reduce anchor capacity. However, the adverse influence is not considered in current design, and no guideline found engineering practice. This paper presents a framework for mooring design sand considering seabed based on floater hydrodynamics. First, hydrodynamic calculation of studied coupled with system was conducted. Then, potential trench profile assessed using line–seabed d...

This paper provides insight into the behavior of a stiffened caisson anchor under inclined cyclic loading in calcareous silt. A series tests was conducted beam centrifuge. monotonic test first performed, quantifying pure capacity, and then four varying mean load, amplitude, number cycles. Cyclic soil characterization T-bar were linked. Undrained led to generate excess pore pressure, resulting d...

Suction caissons are attractive solutions to support offshore structures. Their capacity, both pull-out and bearing, grows with their embedment depth. However, higher depths increase risks of installation failure due uncertainty seabed condition, increased chance piping structural buckling. For the first time, this paper investigates structurally enhanced (SECs), in form flanges attached caisso...

Abstract Caisson type gravity quay wall is a common structure used in the coastal regions. However, many of existing walls constructed past are becoming obsolete. Therefore, main goal this study to enhance performance these by increasing front water depth. To deepen depth, special grout ejected solidify rubble mound under caisson toe, then excavating part placed designed level. Various cases wi...

Open caisson shafts are a widely adopted solution for range of geotechnical applications. An external ‘cutting shoe’ is common construction feature used to reduce the soil frictional resistance acting on during sinking. This forms an annular void encircling which filled with support fluid maintain excavation stability. The primary aim this paper explore influence cutting shoe geometry resulting...

Reinforced precast concrete caisson has been selected as wharf front structure for the project of Tuas Port Phase 1 in Singapore. The and foundation were designed to withstand various loading cases comprising loads during both construction operation stages. It was identified that sliding failure mode structures could be one critical design checks. friction tests conducted under conditions asses...