Precast collars for screw type anchors that have a body made of a high strength composite or concrete material. The body having an opening to receive an anchor base head portion of an anchor so that a structure to be supported by the anchor is in direct contact with the anchor.

A wind power installation foundation having a cylindrical central unit, a plurality of steel carriers which are arranged radially around the central unit and which respectively have a first and a second end, and a plurality of foundation piles. The first ends of the steel carriers are fixed to the central unit so that the second ends of the steel carriers are in the form of free ends. The second free ends of the steel carriers are respectively placed on one of the foundation piles.

A wind power installation foundation having a cylindrical central unit, a plurality of steel carriers which are arranged radially around the central unit and which respectively have a first and a second end, and a plurality of foundation piles. The first ends of the steel carriers are fixed to the central unit so that the second ends of the steel carriers are in the form of free ends. The second free ends of the steel carriers are respectively placed on one of the foundation piles.

Precast collars for screw type anchors that have a body made of a high strength composite or concrete material. The body having an opening to receive an anchor base head portion of an anchor so that a structure to be supported by the anchor is in direct contact with the anchor.

Precast collars for screw type anchors that have a body made of a high strength composite or concrete material. The body having an opening to receive an anchor base head portion of an anchor so that a structure to be supported by the anchor is in direct contact with the anchor.

Provided is a method for burying a precast pile in which a borehole and a buried precast pile are strongly integrated, the end bearing capacity and the circumferential frictional force of the precast pile are increased, and the extraction resistance strength thereof is improved. Provided is a method for burying a precast pile in which a foaming agent having an expanding effect is added to the cement milk or mortar in advance, whereby the soil cement formed around the base of the precast pile in the borehole is caused to expand.

Provided is a method for burying a precast pile in which a borehole and a buried precast pile are strongly integrated, the end bearing capacity and the circumferential frictional force of the precast pile are increased, and the extraction resistance strength thereof is improved. Provided is a method for burying a precast pile in which a foaming agent having an expanding effect is added to the cement milk or mortar in advance, whereby the soil cement formed around the base of the precast pile in the borehole is caused to expand.

The invention relates to a method for constructing a foundation for a tower structure, comprising at least one structure-side connection profile in the form of a pipe segment. The method has the steps of providing a foundation pile with a diameter which differs from the diameter of the pipe segment, vibrating and/or ramming the foundation pile into a supporting substratum, aligning and fixing the pipe segment coaxially and concentrically to the foundation pile introduced into the substratum such that an annular space is formed between the pipe segment and the foundation pile, and filling the annular space with a curable casting compound.

The invention relates to a method for constructing a foundation for a tower structure, comprising at least one structure-side connection profile in the form of a pipe segment. The method has the steps of providing a foundation pile with a diameter which differs from the diameter of the pipe segment, vibrating and/or ramming the foundation pile into a supporting substratum, aligning and fixing the pipe segment coaxially and concentrically to the foundation pile introduced into the substratum such that an annular space is formed between the pipe segment and the foundation pile, and filling the annular space with a curable casting compound.

A heat transfer pipe embedded in a prefabricated pipe pile including a plurality of prefabricated pipe piles, a heat transfer pipe component and a pump assembly; the prefabricated pipe pile sealed by closing the bottom thereof and sides of which are provided with inclined holes; a locking pin provided at an inner wall of the pipe pile; a steel plate provided on the locking pin, and a steel bar structure bound on the steel plate; the heat transfer pipe component comprises a horizontal heat transfer pipe communicated with a vertical heat transfer pipe with both pipes communicated with the pump assembly, the horizontal pipe embedded and fixed via the steel bar structure, the vertical heat transfer pipe passes through the inclined holes and fixed in the pipe pile via a steel bar bracket.