The portable mechanically assembled ground fixation stake device is applied to the engineering of treating land earthwork, water-based desilting, excavating materials, moving, land, underwater heavy objects, civil engineering, harbor, river, lake construction and the like, and is characterized in that the whole device is fixed only by the action of the working tensile force itself. The whole device has six stake columns 2a, 2b, 4a,4b, 9, 1) arranged on the ground, wherein four constituent brackets (2a, 2b, 4a, 4b) are supported on the ground. The top ends of the four supports are mounted on the shaft (6), and a cuboid rigid block (15) is mounted in the middle of the shaft (6). When the system is subjected to pulling force, the cuboid rigid block (15) rotates around the central shaft (6), and due to the opposite movement direction of the two end points of the cuboid rigid block (6), the tension conversion direction of the system forms an inclined downward pressure, so that the protective stake (9) is subjected to pressure at the same time from the pressure rod (7), and due to the fact that the tensile force and the pressure are synchronized, the greater the tension force is also increased, so that the whole device achieves the effect of fixing the stake. The device is light in weight and convenient to carry, and can be mounted and disassembled anywhere.

A passive annular grout seal assembly is disclosed for sealing an annular opening between a driven pile and a skirt pile sleeve for an offshore platform. The annular seals are located at the bottom of the pile sleeves near sea floor and automatically activated when piles are inserted and driven through the pile sleeves without any active operational procedure during offshore piling. The seal configuration fully utilizes the seal height, the grout column height and the density difference between grout and sea water to produce enhanced sealing capacity against the column of grout above.

A system for joining two separate spun piles by interlocking together a top end plate located at a bottom end of a first spun pile to a bottom end plate located at a top end of a second spun pile, wherein the end plates each have a plurality of segments comprising an equal number of segmental protrusions and segmental recesses.

Disclosed is a multiple friction joint pile connection construction system to construct: shallow and deep foundations for structures, tie beam construction between footings, passive piles to prevent slope failures beam on elastic foundation, pile cap and tie beam in the construction of pile groups, load transfer platforms isolated (not connected) from the upper structure, retaining structure when constructed with vertical and horizontal orientation, vertical and horizontal drain when perforated blocks are used, landing pier, quay wall and platform construction for coastal and harbor structures, by anchoring to the upper section of the existing bored piles, by anchoring to the upper sections of the columns of the upper structure, in railroad tie manufacture, in transportation structures and in all kinds of similar geotechnical applications.

A method for reinforcing an aggregate pier. The method includes inserting a conical-head pipe into the aggregate pier, injecting grout into the aggregate pier by injecting the grout into the inner chamber of the hollow rod, driving the conical-head pipe into a soil under the aggregate pier by driving a secondary pipe into the aggregate pier and pushing the conical-head pipe toward the soil under the aggregate pier by utilizing the secondary pipe, filling the secondary pipe with grout, and inserting a reinforcement bar into the secondary pipe and the hollow rod. This method reinforces an aggregate pier against excess tensional and compressional loads of a concrete foundation.

A pile (270) within a bore (110) comprises a column (250). The column (250) comprises a stack of a plurality of pile sections (300) arranged end-to-end within the bore (110). There is a cured material (260) between at least a part of an outside surface of the column (250) and the surface of the bore (110). The cured material, for example grout, may be provided through channels in the pile sections.

The invention relates to a pile joint, which comprises a first concrete pile, a second concrete pile, and a coupling system therebetween for connecting and locking the concrete piles relative to each other. The coupling system includes a lock housing and a lock spindle connectible to each other and provided with transverse holes in such a way that the lock housing's transverse holes and the lock spindle's transverse hole settle substantially in line with each other for receiving a locking pin when the lock housing and the lock spindle are connected to each other. In addition, the lock housing is provided with a locking ring for retaining the locking pin in a position locking the lock housing and the lock spindle to each other. For ensuring the pipe joint's installation and durability there is in alignment with a first transverse hole of the lock housing a guidance pipe and in alignment with a second transverse hole of the lock housing, opposite to its first hole, a locking seat closed at one end and intended for the locking ring. The locking ring is adapted to be movable in a groove included in the locking seat and the locking pin is provided with a recess in the lengthwise direction of the locking pin to receive the locking ring.

A pile connection comprises at least one fixture having a collar portion, a plurality of micropile sleeves, a plurality of gusset members extending between the collar portion and the micropile sleeves, and at least one connecting member that couples adjacent gusset members and that is spaced apart from the collar portion. A recess bounded by a wall of the collar portion is configured to contact a portion of a vertical pile. One or more fasteners may be used to press the wall against the vertical pile, with certain embodiments employing two complementary fixtures that may be coupled to one another (e.g., using the fasteners) along opposing sides of the vertical pile. Each micropile sleeve is configured to receive a micropile that may be driven through the sleeve into the ground at a position spaced apart from the vertical pile.

An offshore wind energy system comprising a foundation having a first hollow structural element with a longitudinally extending, circumferential first wall. A cable bushing penetrates through the first wall and is arranged in the first wall. At least one cable guide arrangement extends in a radial direction and is arranged at an outer shell surface of the first wall of the first hollow structural element. The cable guide arrangement is configured to guide a submarine cable exiting the cable bushing from the cable bushing to a submarine bottom surface.

A wind turbine foundation structure comprising a hollow structural element with a circumferential wall extending in the longitudinal direction. A first cable feed-through breaking through the wall is arranged in the wall. A transition piece with an overlap region projects into the hollow structural element and a transition region projects out of the hollow structural element at the end face. A circumferential wall extends in the longitudinal direction. A second cable feed-through which breaks through the wall is arranged in the overlap region in the wall. The first and the second cable feed-through bear against one another in an at least partially overlapping manner in the assembled state of the hollow structural element and the transition piece.