The present invention provides a method for tackling the repelling of hammering during pipe pile driving, which is of simply structure and can be carried out easily. The technical scheme of the present invention comprises: When repelling of hammering occurs in the process of piling through a sand layer, drill holes downwardly around and/or inside the pipe pile, and jet high-pressure water to the sand layer below to cut and disturb the sand layer, which consequently decreases the soil resistance to the pipe pile and increases the driveability. The present invention is applied to geotechnical engineering.

The present invention provides a method for tackling the repelling of hammering during pipe pile driving, which is of simply structure and can be carried out easily. The technical scheme of the present invention comprises: When repelling of hammering occurs in the process of piling through a sand layer, drill holes downwardly around and/or inside the pipe pile, and jet high-pressure water to the sand layer below to cut and disturb the sand layer, which consequently decreases the soil resistance to the pipe pile and increases the driveability. The present invention is applied to geotechnical engineering.

A method of installing a foundation (1) for a structure. The foundation body (2) has a toe (7) at its distal end which defines an aperture into an internal cavity (12) defined by an inner wall (8). Fluid is jetted from a plurality of nozzles (9) to direct fluid distally into the soil (5) ahead of the toe (7) during installation. A pump arrangement (13) controlled by a controller (16) is used to vary the quantity of fluid at a proximal end to thereby vary the fluid suspension pressure adjacent the toe (7) in a fluid communication channel (11) extending between the proximal end and the toe (7). The controller varies the fluid suspension pressure as the toe (7) inserts deeper into the soil (5) based on a target fluid suspension pressure as a function of toe depth.

A method of installing a foundation (1) for a structure. The foundation body (2) has a toe (7) at its distal end which defines an aperture into an internal cavity (12) defined by an inner wall (8). Fluid is jetted from a plurality of nozzles (9) to direct fluid distally into the soil (5) ahead of the toe (7) during installation. A pump arrangement (13) controlled by a controller (16) is used to vary the quantity of fluid at a proximal end to thereby vary the fluid suspension pressure adjacent the toe (7) in a fluid communication channel (11) extending between the proximal end and the toe (7). The controller varies the fluid suspension pressure as the toe (7) inserts deeper into the soil (5) based on a target fluid suspension pressure as a function of toe depth.

A concentrically loaded foundation pier system which includes several concentrically stacked steel pipes filled with concrete. The entire pier is installed centrally beneath the footing of the structure. Shims are placed between the top-most pier element and a pier cap which prevents shifting when the soil expands and contracts. The final structure is end-loaded and pressed to the bedrock or other load-bearing strata. An alternative embodiment includes a temporary lifting assembly which can be fastened about the structural pier without need for bolts or other fasteners.

A concentrically loaded foundation pier system which includes several concentrically stacked steel pipes filled with concrete. The entire pier is installed centrally beneath the footing of the structure. Shims are placed between the top-most pier element and a pier cap which prevents shifting when the soil expands and contracts. The final structure is end-loaded and pressed to the bedrock or other load-bearing strata. An alternative embodiment includes a temporary lifting assembly which can be fastened about the structural pier without need for bolts or other fasteners.

A foundation system for the foundation of an offshore structure includes a monopile having an anchoring portion anchorable in a seabed and a connection portion disposed at the opposite end. A platform structure is connected directly to the connection portion of the monopile or indirectly via a transition piece. The platform structure is disposable above a water surface. The foundation system includes at least two stabilizing devices connected directly to the platform structure or indirectly to the platform structure via the transition piece. The stabilizing devices are attachable to the seabed such that tensile forces or compression forces are transmittable between the seabed and the platform structure. Securing points on the stabilizing devices, together with the connection portion of the monopile, define a plane having a horizontally extending component.

A foundation system for the foundation of an offshore structure includes a monopile having an anchoring portion anchorable in a seabed and a connection portion disposed at the opposite end. A platform structure is connected directly to the connection portion of the monopile or indirectly via a transition piece. The platform structure is disposable above a water surface. The foundation system includes at least two stabilizing devices connected directly to the platform structure or indirectly to the platform structure via the transition piece. The stabilizing devices are attachable to the seabed such that tensile forces or compression forces are transmittable between the seabed and the platform structure. Securing points on the stabilizing devices, together with the connection portion of the monopile, define a plane having a horizontally extending component.

In a general aspect, suction anchors are presented for securing structures to an underwater floor. The suction anchors include a tubular body formed at least in part of cementitious materials and having a closed end and an open end. The tubular body includes an edge defining an opening for the open end. The edge is configured to penetrate the underwater floor. The suction anchors also include a port configured to fluidly-couple a cavity within the tubular body to an exterior of the tubular body. The suction anchors additionally include a pad eye extending from an outer surface of the tubular body and configured to couple to a mooring line. In another aspect, methods of manufacturing the suction anchors are also presented.

In a general aspect, suction anchors are presented for securing structures to an underwater floor. The suction anchors include a tubular body formed at least in part of cementitious materials and having a closed end and an open end. The tubular body includes an edge defining an opening for the open end. The edge is configured to penetrate the underwater floor. The suction anchors also include a port configured to fluidly-couple a cavity within the tubular body to an exterior of the tubular body. The suction anchors additionally include a pad eye extending from an outer surface of the tubular body and configured to couple to a mooring line. In another aspect, methods of manufacturing the suction anchors are also presented.