A screw anchor for a trussed foundation system to support single-axis trackers and other structures and related methods of driving such a screw anchor into underlying ground. A hollowed tube of uniform diameter is open at both ends with a thread form beginning at one end and circumscribing a portion the tube, the thread form having a tapered lead-in. The open-ended geometry allows a mandrel or rock drill to be inserted and operated through the anchor during driving to expedite the driving process. The tapered thread form provides a lead-in for driving the anchor into a rock bore.

The invention relates to a foundation element in the ground and to a method for producing the foundation element which is formed of a hardenable mass, wherein, prior to hardening, at least one heat exchanger element is inserted. According to the invention a transition region towards the surrounding ground is provided, in which the foundation element is formed of crushed ground material of the surrounding ground with a hardening suspension.

The invention relates to a foundation element in the ground and to a method for producing the foundation element which is formed of a hardenable mass, wherein, prior to hardening, at least one heat exchanger element is inserted. According to the invention a transition region towards the surrounding ground is provided, in which the foundation element is formed of crushed ground material of the surrounding ground with a hardening suspension.

A screw anchor for a trussed foundation system to support single-axis trackers and other structures and related methods of driving such a screw anchor into underlying ground. A hollowed tube of uniform diameter is open at both ends with a thread form beginning at one end and circumscribing a portion the tube, the thread form having a tapered lead-in. The open-ended geometry allows a mandrel or rock drill to be inserted and operated through the anchor during driving to expedite the driving process. The tapered thread form provides a lead-in for driving the anchor into a rock bore.

A steel cap for structurally connecting together a new foundation and an existing tower is disclosed. The new foundation includes at least one foundation element positioned in the ground. The existing tower includes an existing foundation and a tower structure extending from and supported by the existing foundation. The steel cap comprises (a) a first element for connecting the cap to the new foundation element or foundation elements and (b) a second element for connecting the cap to the existing tower and thereby, in use, connecting together the new foundation and the existing tower.

A steel cap 7 for structurally connecting together a new foundation and an existing tower is disclosed. The new foundation includes at least one foundation element 9 positioned in the ground. The existing tower includes an existing foundation 5 and a tower structure 3 extending from and supported by the existing foundation. The steel cap comprises (a) a first element 11 for connecting the cap to the new foundation element or foundation elements and (b) a second element 13 for connecting the cap to the existing tower and thereby, in use, connecting together the new foundation and the existing tower.

A screw anchor for a trussed foundation system to support single-axis trackers and other structures and related methods of driving such a screw anchor into underlying ground. A hollowed tube of uniform diameter is open at both ends with a thread form beginning at one end and circumscribing a portion the tube, the thread form having a tapered lead-in. The open-ended geometry allows a mandrel or rock drill to be inserted and operated through the anchor during driving to expedite the driving process. The tapered thread form provides a lead-in for driving the anchor into a rock bore.

A machine for rotary driving screw anchors into underlying ground and related. The machine has a mast with a rotary driver and a mandrel driver oriented on a common axis. The mandrel driver passes a mandrel through the rotary driver and the screw anchor to allow the mandrel to be actuated ahead of the screw anchor while the rotary driver drives the screw anchor into the ground. Alternatively, the mandrel driver may also drive a hammering drill through the screw anchor to clear a path ahead of it through subsurface rocks.

An alignment and installation jig for a screw anchor driving machine. The alignment and installation jig includes a laser target that can be moved from an alignment position to a driving position. The jig may also include one or more automated crimping assemblies to form permanent connections between overlapping foundation components while the machine is correctly oriented to assembly a truss foundation. One crimping assembly device may effect crimp joints between a foundation component held by the jig and overlapping upper ends of a pair of adjacent foundation legs. Second crimping assemblies may telescope down each leg to effect respective crimp joints between the lower end of the leg and the upper end of a driven foundation component.

The present application relates to a top plate jacking device and jacking construction method configured for V-shaped columns, the top plate jacking device comprising a temporary support pile comprises a plurality of pile holes arranged on a construction surface, a bottom end of the pile hole is cast-in-place with a bearing platform, a temporary support column is inserted on the bearing platform, a plurality of pillars are fixed at a top of the temporary support column, wherein comprises a plurality of vertically connected column segments, two adjacent column segments detachably connected vertically through a connecting component; a support block is provided at a top of the plurality of pillars, the top of the support block abuts against a lower surface of the top plate; a hydraulic jack is configured to jack the top plate and is provided with a plurality of intervals at the top of the temporary support column.