Prestressed pipe pile anti-buoyancy construction structure

Abstract

This application discloses a prestressed concrete pipe pile anti-buoyancy construction structure, comprising: forming an anti-buoyancy construction structure in which adjacent prestressed concrete pipe piles are mutually restrained. When the soft soil layer at a single prestressed concrete pipe pile experiences a tendency force of soil displacement, the prestressed concrete pipe pile transmits the force to the cap ring through the concrete curing layer and the concrete A in the grouting pipe. Since the cap rings are fixedly connected, the force is distributed among the cap rings. The adjacent prestressed concrete pipe piles are mutually restrained through the cap rings, the concrete A in the grouting pipe, and the concrete curing layer, thereby improving the anti-buoyancy of the single prestressed concrete pipe pile in the soft soil layer and solving the problem of poor anti-buoyancy of single prestressed concrete pipe piles.

Description

Technical Field

[0001] This utility model relates to a prestressed pipe pile anti-buoyancy construction structure, belonging to the field of prestressed pipe pile construction technology. Background Technology

[0002] In the construction environment along the river, the soft soil layer is deep, requiring multiple prestressed pipe piles to be driven into the soil foundation to provide load-bearing capacity for the subsequent construction of buildings. However, after the prestressed pipe piles are driven in, the soft soil foundation will experience soil displacement under the weight of the construction equipment, which can easily cause the prestressed pipe piles to be squeezed and floated.

[0003] The current anti-buoyancy technology for prestressed pipe piles (see Chinese Patent Publication No. CN207079577U) can play a certain role in resisting buoyancy by increasing friction after grouting and solidifying the soil near the prestressed pipe pile. However, when the soil near the prestressed pipe pile is squeezed together, the anti-buoyancy of a single prestressed pipe pile is poor. Summary of the Invention

[0004] To solve the above-mentioned technical problems, this utility model provides a prestressed pipe pile anti-buoyancy construction structure.

[0005] This utility model is achieved through the following technical solution.

[0006] This utility model provides a prestressed pipe pile anti-buoyancy construction structure, comprising: This forms an anti-buoyancy construction structure that restricts the movement of adjacent prestressed pipe piles.

[0007] The anti-buoyancy construction structure includes a soft soil layer; Prestressed pipe piles penetrating soft soil layers; Grouting pipes are inserted obliquely into the soft soil layer.

[0008] The grouting pipe is a metal steel pipe; one prestressed pipe pile corresponds to at least four grouting pipes, and the four grouting pipes are distributed in a ring at intervals in the soft soil layer around the prestressed pipe pile.

[0009] The bottom of the grouting pipe is provided with a grout outlet that contacts the prestressed pipe pile, and the top of the grouting pipe extends through the soft soil layer.

[0010] The grouting pipe is filled with solidified concrete A. A solidified concrete layer is injected into the soft soil layer at the prestressed pipe pile through the bottom of the grouting pipe. The solidified concrete layer and concrete A are solidified into one piece.

[0011] The concrete A contains steel reinforcements to improve its load-bearing strength.

[0012] The prestressed pipe pile located on the top surface of the soft soil layer is fitted with a cap ring, and the top of the grouting pipe passes through the cap ring and is fixed; adjacent cap rings are overlapped and fixedly connected.

[0013] The beneficial effects of this utility model are as follows: When the soft soil layer at a single prestressed pipe pile experiences a tendency to displace soil, the prestressed pipe pile transmits the force to the cover ring through the concrete curing layer and the concrete A in the grouting pipe. Since the cover rings are fixedly connected, the force is distributed among the cover rings. The adjacent prestressed pipe piles are mutually restrained by the cover rings, the concrete A in the grouting pipe, and the concrete curing layer, which improves the anti-buoyancy of the single prestressed pipe pile in the soft soil layer and solves the problem of poor anti-buoyancy of the single prestressed pipe pile. Attached Figure Description

[0014] Figure 1 This is a cross-sectional sectional view of the present invention; In the diagram: 1-soft soil layer; 2-prestressed pipe pile; 3-grouting pipe; 4-capping ring; 31-concrete A; 32-concrete curing layer; 32-reinforcing steel; 4-capping ring. Detailed Implementation

[0015] The technical solution of this utility model is further described below, but the scope of protection is not limited to what is described.

[0016] like Figure 1 As shown.

[0017] This application discloses a prestressed pipe pile anti-buoyancy construction structure, comprising: The prestressed pipe pile 2 penetrates the soft soil layer 1 through the downward pressing construction; the bottom of the prestressed pipe pile 2 is pressed to the contact bedrock layer (not shown in the figure) to meet the stress requirements.

[0018] A grouting pipe 3, made of metal steel, is inserted obliquely into the soft soil layer 1 using a pipe-pressing machine. At least four grouting pipes 3 correspond to one prestressed concrete pipe pile 2, arranged in a ring at intervals within the soft soil layer 1 surrounding the prestressed concrete pipe pile 2. Each grouting pipe 3 has a grout outlet at its bottom that contacts the prestressed concrete pipe pile 2, and its top extends through the soft soil layer 1. Solidified concrete A31 is injected into the grouting pipe 3, and a solidified concrete layer 32 is injected into the soft soil layer 1 at the prestressed concrete pipe pile 2 through the bottom of the grouting pipe 3. The solidified concrete layer 32 and the concrete A31 solidify and form a single unit. Reinforcing steel bars 33 can be installed within the concrete A31 to improve its strength.

[0019] The prestressed pipe pile 2 located on the top surface of the soft soil layer 1 is fitted with a cover ring 4, and the top of the grouting pipe 3 passes through the cover ring 4 and is then welded and fixed; adjacent cover rings 4 overlap and are welded and fixed together.

[0020] When the soft soil layer 1 at a single prestressed pipe pile 2 experiences a tendency to displace soil, the prestressed pipe pile 2 transmits the force to the cover ring 4 through the concrete curing layer 32 and the concrete A31 in the grouting pipe 3. Since the adjacent cover rings 4 are fixedly connected, the force is distributed among the cover rings 4. The adjacent prestressed pipe piles 2 are mutually restrained by the cover rings 4, the concrete A31 in the grouting pipe 3, and the concrete curing layer 32, which improves the anti-buoyancy of the single prestressed pipe pile 2 in the soft soil layer 1 and solves the problem of poor anti-buoyancy of the single prestressed pipe pile.

[0021] Four inclined grouting pipes 3 surround a prestressed pipe pile 2, and the soft soil layer 1 between the grouting pipes 3 and the prestressed pipe pile 2 is subjected to a certain amount of compression.

Claims

1. A prestressed pipe pile anti-buoyancy construction structure, characterized in that, include: To form an anti-buoyancy construction structure in which adjacent prestressed pipe piles (2) are mutually restrained; The anti-buoyancy construction structure includes a soft soil layer (1); Prestressed pipe piles (2) penetrating soft soil layer (1); Grouting pipe (3) inserted obliquely into soft soil layer (1); The grouting pipe (3) is a metal steel pipe; one prestressed pipe pile (2) corresponds to at least (6) four grouting pipes (3), and the four grouting pipes (3) are distributed in a ring at intervals in the soft soil layer (1) around the prestressed pipe pile (2); The bottom of the grouting pipe (3) is provided with a grout outlet and contacts the prestressed pipe pile (2), and the top of the grouting pipe (3) extends through the soft soil layer (1); The grouting pipe (3) is filled with solidified concrete A (31), and a solidified concrete layer (32) is injected into the soft soil layer (1) at the prestressed pipe pile (2) through the bottom of the grouting pipe (3). The solidified concrete layer (32) and concrete A (31) are solidified into one piece.

2. The prestressed pipe pile anti-buoyancy construction structure as described in claim 1, characterized in that: The concrete A (31) is reinforced with steel reinforcement (33) to improve its strength.

3. The prestressed pipe pile anti-buoyancy construction structure as described in claim 1, characterized in that: The prestressed pipe pile (2) located on the top surface of the soft soil layer (1) is fitted with a cover ring (4), and the top of the grouting pipe (3) passes through the cover ring (4) and is fixed; the adjacent cover rings (4) are overlapped and fixedly connected.

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