A precast pipe pile

Abstract

The utility model discloses a prefabricated pipe pile, which comprises a pile body, a partition plate, the partition plate is formed in the inner cavity of the pile body, a filling cavity is formed between the partition plate and the upper port of the pile body, and the filling cavity is filled with a filler with a weight greater than a first preset value. The utility model discloses a scheme, which forms a filling cavity between the partition plate and the upper port of the pile body by forming the partition plate inside the pile body, fills the filler in the filling cavity, increases the overall weight of the prefabricated pipe pile, improves the uplift bearing capacity of the prefabricated pipe pile, and meets the construction requirements without increasing the construction cost.

Description

Technical Field

[0001] This utility model relates to the field of pipe pile technology, specifically to a precast pipe pile. Background Technology

[0002] The bearing capacity of pile foundations is the most crucial technical indicator in pile foundation design. It refers to the maximum load that a pile foundation can withstand while ensuring safety and stability. It includes horizontal bearing capacity, tensile bearing capacity, and compressive bearing capacity. Tensile bearing capacity refers to the pile foundation's ability to resist upward loads (such as wind loads), primarily relying on the pile's own weight and side skin friction.

[0003] In areas with weak foundation soil, such as in desert photovoltaic projects, PHC pipe piles (prestressed high-strength concrete pipe piles) are often used. Due to the loose aeolian sand on the surface, the pull-out bearing capacity of a single pile may be too low, and the pile foundation is not strong enough to resist uplift loads (such as wind loads). The existing solution is to increase the pile length or pile diameter to improve the pull-out bearing capacity of the pipe pile, but this increases the material cost. Utility Model Content

[0004] This utility model provides a precast pipe pile. By forming a partition inside the pile body, a filling cavity is formed between the partition and the upper end of the pile body. By filling the filling cavity with filler, the overall weight of the precast pipe pile is increased, thereby improving the pull-out bearing capacity of the precast pipe pile. This meets the construction requirements without increasing the construction cost.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: This utility model provides a precast pipe pile, comprising: pile body; A partition is formed in the inner cavity of the pile body, and a filling cavity is formed between the partition and the upper end of the pile body. The filling cavity is filled with a filler with a weight greater than a first preset value.

[0006] Optionally, the precast pipe pile further includes: A sealing plug, which is adapted to the upper port of the inner cavity of the pile body.

[0007] Optionally, the sealing plug is a plain concrete plug with a thickness of 0.1m.

[0008] Optionally, multiple partitions are provided, and the multiple partitions are distributed along the axial direction of the pile body.

[0009] Optionally, the distance between adjacent partitions is 0.1m.

[0010] Optionally, the distance between the bottommost partition and the bottom of the pile is 0.5m.

[0011] Optionally, the partition is a concrete slab with a thickness of 0.1m.

[0012] Optionally, the inner diameter of the filling cavity is larger than a second preset value.

[0013] Optionally, the length of the pile is greater than a third preset value.

[0014] Optionally, the filler material is sand.

[0015] The above-described solution of this utility model has at least the following beneficial effects: The above-mentioned solution of this utility model forms a baffle plate inside the pile body, creating a filling cavity between the baffle plate and the upper end of the pile body. By filling the filling cavity with filler, the overall weight of the precast pipe pile is increased, thereby improving the pull-out bearing capacity of the precast pipe pile. This meets the construction requirements without increasing the construction cost. Attached Figure Description

[0016] Figure 1 This is a front sectional view of a precast pipe pile provided in an embodiment of this utility model.

[0017] The annotations in the attached figures are explained as follows: 1. Pile body; 2. Partition plate; 3. Sealing plug. Detailed Implementation

[0018] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0019] like Figure 1 As shown, this utility model provides a precast pipe pile, comprising: Pile body 1; The partition 2 is formed in the inner cavity of the pile body 1, and a filling cavity is formed between the partition 2 and the upper end of the pile body 1. The filling cavity is filled with a filler material with a weight greater than a first preset value.

[0020] In this embodiment, after the pile body 1 is vibrated into the ground, the filling material is filled into the filling cavity through the upper end of the pile body 1. The filling material is supported by the partition plate 2 to increase the overall weight of the precast pipe pile, thereby improving the pull-out bearing capacity of the precast pipe pile and meeting the construction requirements without increasing the construction cost; wherein, the first preset value can be 1.58kN.

[0021] In an optional embodiment of this invention, the filler is sand.

[0022] In this embodiment, sand is used as a filler, which is easy to obtain and helps to reduce construction costs while increasing weight.

[0023] In an optional embodiment of this invention, the inner diameter of the filling cavity is greater than a second preset value.

[0024] In this embodiment, the second preset value can be 160mm. The second preset value is adjusted according to the diameter of the pile body 1 to meet the weight of the filling material in the filling cavity, ensure the weight increase effect, and ultimately ensure the improvement effect on the pull-out bearing capacity of the precast pipe pile.

[0025] like Figure 1 As shown, in an optional embodiment of this utility model, the precast pipe pile further includes: A sealing plug 3 is adapted to the upper port of the inner cavity of the pile body 1.

[0026] In this embodiment, after the filling material is filled, the sealing plug 3 is inserted into the upper port of the inner cavity of the pile body 1 to seal the upper port of the inner cavity of the pile body 1 and prevent the filling material from being lost by the wind. In practical applications, if there is a gap between the sealing plug 3 and the upper port of the inner cavity of the pile body 1, cement can be used to fill and seal it to ensure the sealing effect of the sealing plug 3 on the upper port of the inner cavity of the pile body 1.

[0027] like Figure 1 As shown, in an optional embodiment of the present invention, the sealing plug 3 is a plain concrete plug with a thickness of 0.1m.

[0028] In this embodiment, the sealing plug 3 is a plain concrete plug with a thickness of 0.1m. While ensuring the sealing effect of the sealing plug 3 on the upper port of the inner cavity of the pile body 1, it can also ensure the strength of the sealing plug 3 and prevent the sealing plug 3 from being damaged by wind and sand.

[0029] like Figure 1 As shown, in an optional embodiment of the present invention, the partition 2 is provided in multiple pieces, and the multiple partitions 2 are distributed along the axial direction of the pile body 1.

[0030] In this embodiment, by setting multiple partitions 2, when one partition 2 is damaged, there are still intact partitions 2 to support the filling material in the filling cavity, so as to ensure the safety of the bottom of the pile body 1. Specifically, in this embodiment, two partitions 2 are provided.

[0031] like Figure 1 As shown, in an optional embodiment of the present invention, the distance between adjacent partitions 2 is 0.1m.

[0032] In this embodiment, the distance between adjacent partitions 2 is 0.1m, so that when a partition 2 is damaged, the intact partition 2 can be used to support the filling material in a timely manner.

[0033] like Figure 1 As shown, in an optional embodiment of the present invention, the distance between the lowermost partition 2 and the bottom end of the pile body 1 is 0.5m.

[0034] In this embodiment, by making the distance between the bottommost partition 2 and the bottom end of the pile 1 0.5m, during the process of the pile 1 being vibrated into the ground, it is possible to prevent the soil at the bottom of the pile 1 from contacting the bottommost partition 2, thus preventing the soil from supporting the bottommost partition 2 and preventing damage to the partition 2.

[0035] In an optional embodiment of this utility model, the partition 2 is a concrete slab with a thickness of 0.1m.

[0036] In this embodiment, by making the partition 2 a concrete slab with a thickness of 0.1m, the strength of the partition 2 can be guaranteed and damage to the partition 2 can be avoided.

[0037] In an optional embodiment of this utility model, the length of the pile body 1 is greater than a third preset value.

[0038] In this embodiment, in order to meet the weight requirements of the filling material in the filling cavity, ensure the weight increase effect, and ultimately ensure the improvement effect on the pull-out bearing capacity of the precast pipe pile, the third preset value can be 5.5m. Specific implementation examples: A photovoltaic site uses precast pipe piles with a diameter of 300 mm, an inner diameter of 160 mm, a length of 5.5 m, a penetration depth of 2.8 m, and an exposed height of 2.7 m. The standard value T of the ultimate tensile bearing capacity of the pile at the time of single pile failure is obtained from a static load test. uk The weight is 16kN, and the self-weight of the foundation pile is G. p The value is 7.27 kN. The pile pull-out force calculated according to the standard combination of load-bearing effects is N. k ≤T uk / 2+G p =15.27kN.

[0040] After filling and weighting △G p =πr²hρg=3.14*0.08m 2 *5m*1600kg / m 3 *9.8 N / kg = 1.58 kN, N k ≤T uk / 2+G p +△G p =16.85kN.

[0041] (18.42-15.27) / 15.27=10.35%, the tensile bearing capacity increases by 10.35%.

[0042] The precast pipe pile provided in the above embodiments of this utility model forms a filling cavity between the partition plate 2 formed inside the pile body 1 and the upper end of the pile body 1 by forming a partition plate 2 inside the pile body 1. By filling the filling cavity with filler, the overall weight of the precast pipe pile is increased, thereby improving the pull-out bearing capacity of the precast pipe pile, which meets the construction requirements without increasing the construction cost. By setting multiple partition plates 2, when one partition plate 2 is damaged, there is still an intact partition plate 2 to support the filler in the filling cavity, thereby ensuring the safety of the bottom of the pile body 1.

[0043] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A precast pipe pile, characterized in that: include: Pile body (1); The partition (2) is formed in the inner cavity of the pile body (1). A filling cavity is formed between the partition (2) and the upper end of the pile body (1). The filling cavity is filled with a filler with a weight greater than a first preset value.

2. The precast pipe pile according to claim 1, characterized in that, Also includes: A sealing plug (3) is adapted to the upper port of the inner cavity of the pile body (1).

3. The precast pipe pile according to claim 2, characterized in that, The sealing plug (3) is a plain concrete plug with a thickness of 0.1m.

4. The precast pipe pile according to claim 1, characterized in that, The partition (2) is provided in multiple pieces, and the multiple partitions (2) are distributed along the axial direction of the pile body (1).

5. The precast pipe pile according to claim 4, characterized in that, The distance between adjacent partitions (2) is 0.1m.

6. The precast pipe pile according to claim 5, characterized in that, The distance between the bottom partition (2) and the bottom end of the pile (1) is 0.5m.

7. The precast pipe pile according to claim 6, characterized in that, The partition (2) is a concrete slab with a thickness of 0.1m.

8. The precast pipe pile according to claim 1, characterized in that, The inner diameter of the filling cavity is greater than the second preset value.

9. The precast pipe pile according to claim 1, characterized in that, The length of the pile (1) is greater than the third preset value.

10. The precast pipe pile according to claim 1, characterized in that, The filling material is sand.

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