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Piston steel pipe foundation construction for piling

Public date: 2018/7/21 10:35:37

1. Single-tube tower prefabricated spiral steel pipe pile foundation, which is characterized by: prefabricated reinforced concrete cap and spiral steel pipe pile embedded in foundation, prefabricated reinforced concrete cap and spiral steel pipe pile are connected by connecting components; precast reinforced concrete The gap between the cap and the connecting component, between the precast reinforced concrete cap and the spiral steel pipe pile is filled with grout.

2 . The single-tube tower prefabricated spiral steel pipe pile foundation according to claim 1 , wherein the spiral steel pipe pile comprises a steel pipe, a flat steel strip wound around an outer wall of the steel pipe, a steel pipe sealing plate disposed at the top of the steel pipe, and a long screw lower nut welded to the bottom of the steel pipe sealing plate, the bottom of the steel pipe is embedded in the foundation and the top of the steel pipe extends into the precast reinforced concrete cap; the connecting component comprises a long screw and a cover arranged in the precast reinforced concrete cap a plate and a long screw on the cover plate; the long screw passes through the cover plate and the steel tube sealing plate, the top of the long screw is screwed into the long screw and locked, and the bottom of the long screw is screwed into the long screw and locked Tight, thus achieving prefabricated reinforced concrete caps and spiral steel pipe piles.

The single-tube tower prefabricated spiral steel pipe pile foundation according to claim 2 or 4, wherein the prefabricated reinforced concrete cap is provided with a foundation hole, and the cover plate is engaged with the foundation hole, And the hole is filled with cement mortar.

The single-tube tower prefabricated spiral steel pipe pile foundation according to any one of claims 1 to 4, characterized in that: the precast reinforced concrete cap embedded anchor bolt assembly, the anchor bolt assembly and the precast reinforced concrete The cap is formed into a whole by a casting process.

The single-tube tower prefabricated spiral steel pipe pile foundation according to claim 6, wherein the anchor bolt assembly comprises a bolt, an upper anchor plate, a lower anchor plate, an anchor bolt nut and an anchor lower nut. The anchor rod is disposed in the precast reinforced concrete cap, the upper anchor plate is located at the top of the precast reinforced concrete cap, the lower anchor plate is located at the bottom of the precast reinforced concrete cap; the anchor rod passes through the upper anchor plate and the lower anchor plate, and the anchor rod Screw the top of the anchor into the anchor and lock it. Screw the bottom of the anchor into the lower nut of the anchor and lock it to secure the upper anchor plate and the lower anchor plate.

6. The single-tube tower prefabricated spiral steel pipe pile foundation according to claim 6, wherein: said precast reinforced concrete cap has a cross-shaped structure, at each of said four edges of said cross-shaped structure, each edge and said Spiral steel pipe pile connection; the anchor bolt assembly is provided at a central intersection of the cross structure

The single-tube tower prefabricated spiral steel pipe pile foundation according to any one of claims 1 to 3, characterized in that: the precast reinforced concrete cap has a cross-shaped structure, at each of the four edges of the cross-shaped structure The edges are connected to the spiral steel pipe pile.


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