A pile press-in machine that receives reaction force from an existing pile to press in a new pile, includes: a reaction force block that grips the existing pile by a clamp to receive the reaction force; a platform that is horizontally movable relative to the reaction force block; and a press-in block that is coupled to the platform, supported to be freely lifted up and down with respect to the platform at a front of the clamp, and grips and presses in the new pile, wherein a plurality of kinds of the reaction force blocks each according to a kind and size of the existing pile are freely attachable to and detachable from one platform.

Disclosed embodiments include a suction pile vent plug having a cylindrically-shaped body having a sealing element, a plurality of coupling features, and a handle connected to the cylindrically-shaped body. The sealing element is configured to form a watertight seal with walls of a suction pile vent into which the vent plug is installed. The plurality of coupling features are configured to engage with corresponding coupling features of the suction pile vent. The movable handle is configured to be moved into one or more locked configurations. Disclosed embodiments further include a suction pile vent having a hollow cylindrically-shaped body having coupling features. The coupling features are configured to engage with corresponding coupling features of a suction pile vent plug to thereby mechanically couple the suction pile vent plug to the suction pile vent. Disclosed embodiments further include a fluidic port that fluidically couples a suction pile to a removable fluidic coupling.

A temporary mechanical and fluidic connection with an anchor wall of a subsea tubular may use a substantially solid, reusable lid for a subsea tubular, which comprises a substantially solid upper surface, a predetermined set of lid anchors (20), a predetermined set of selectively activated valves (30), a seal (40) configured to engage an internal wall (101) of the subsea tubular and create a seal between substantially solid upper surface and the internal wall of the subsea tubular, a connector (50), and a controller (60) by maneuvering the substantially solid, reusable lid proximate an open end (102) of a subsea tubular (100), attaching the substantially solid, reusable lid to the open end of the subsea tubular, using the lid anchors (20) to secure the substantially solid, reusable lid to the open end of the subsea tubular, and operatively engaging the seal (40) to create an occlusive seal between substantially solid upper surface and an internal wall (101) of the subsea tubular.

A temporary mechanical and fluidic connection with an anchor wall of a subsea tubular may use a substantially solid, reusable lid for a subsea tubular, which comprises a substantially solid upper surface, a predetermined set of lid anchors (20), a predetermined set of selectively activated valves (30), a seal (40) configured to engage an internal wall (101) of the subsea tubular and create a seal between substantially solid upper surface and the internal wall of the subsea tubular, a connector (50), and a controller (60) by maneuvering the substantially solid, reusable lid proximate an open end (102) of a subsea tubular (100), attaching the substantially solid, reusable lid to the open end of the subsea tubular, using the lid anchors (20) to secure the substantially solid, reusable lid to the open end of the subsea tubular, and operatively engaging the seal (40) to create an occlusive seal between substantially solid upper surface and an internal wall (101) of the subsea tubular.

An end point closing wall forming device of an extrusion type underground diaphragm wall comprises a main body (1) and a vibration water spraying device. The vibration water spraying device is fixedly disposed inside the main body (1). The end point closing wall forming device of an extrusion type underground diaphragm wall further comprises a separation device. The separation device is movably sheathed on the outer side of a short edge (11) of the main body (1). Also provided is a method for operating an end point closing wall forming device of an extrusion type underground diaphragm wall.

An end point closing wall forming device of an extrusion type underground diaphragm wall comprises a main body (1) and a vibration water spraying device. The vibration water spraying device is fixedly disposed inside the main body (1). The end point closing wall forming device of an extrusion type underground diaphragm wall further comprises a separation device. The separation device is movably sheathed on the outer side of a short edge (11) of the main body (1). Also provided is a method for operating an end point closing wall forming device of an extrusion type underground diaphragm wall.

A pile driver configured to drive a pile into an underwater bed includes a floatable body with a pile guide configured to guide the pile in a downward direction, and an actuator that is fixed to the floatable body and that is configured to drive the pile from the floatable body into the underwater bed. A method of driving a pile into an underwater bed includes the steps of: positioning a floatable body; arranging a pile in a pile guide configured to guide said pile in a downward direction; and driving the pile from the floatable body into the underwater bed by an actuator that is fixed to the floatable body.

A method for lifting and supporting above ground a concrete slab foundation employing hydraulic jacks includes installing piers in the ground, each with a pier extension protruding above ground. A lifting assembly is placed over each pier extension, the lifting assembly having a lift sleeve and upward extending lifting members. Then the slab foundation is poured, bonding a portion of the lifting assembly in concrete. After the slab foundation hardens, a jack is positioned on top of the pier extension, and lifting arms of the jack engage the lifting members. The jack is actuated to exert an upward force on the lifting assembly to lift the slab foundation above the ground. Then, the lift sleeve is rigidly secured to the pier extension, allowing the jack and lifting arms to be removed.

The invention relates to a civil engineering machine with a undercarriage comprising a track chassis, a superstructure mounted on the undercarriage, so as to be rotatable about a vertical axis of rotation, a leader with a linear guide along which a work carriage with a construction work implement is displaceably mounted, and an articulation mechanism by means of which the leader is adjustably mounted on the superstructure. According to the invention it is provided that the articulation mechanism comprises a telescopic arm by means of which a distance of the leader relative to the superstructure can be adjusted.

The invention relates to a civil engineering machine with a undercarriage comprising a track chassis, a superstructure mounted on the undercarriage, so as to be rotatable about a vertical axis of rotation, a leader with a linear guide along which a work carriage with a construction work implement is displaceably mounted, and an articulation mechanism by means of which the leader is adjustably mounted on the superstructure. According to the invention it is provided that the articulation mechanism comprises a telescopic arm by means of which a distance of the leader relative to the superstructure can be adjusted.