Concrete pile head presplitting structure

Abstract

The utility model discloses a concrete pile head presplitting structure which comprises a pile foundation and an ineffective pile head, a gear is arranged between the ineffective pile head and the pile foundation, the outer diameter of the gear is equal to the outer diameter of the pile foundation and equal to the outer diameter of the ineffective pile head, and the ineffective pile head is connected with the pile foundation through concrete in tooth gaps of the gear. When pile chiseling is needed, an operator uses pile chiseling equipment to chiseling away concrete between tooth gaps of the gear, then uses a chisel to strike the gear to enable the gear to rotate, and further enables the gear to be separated from a pile foundation and an invalid pile head. The gear is used for isolating the pile foundation from the invalid pile head, the pile chiseling difficulty is small, consumed time is short, the pile chiseling plane is flat after pile chiseling, and the follow-up repairing difficulty is small.

Description

Technical Field

[0001] The utility model relates to the field of construction engineering, in particular to pile foundation engineering. Background Art

[0002] As an important pile foundation structure, cast-in-place piles are widely used in foundation engineering. However, since cast-in-place piles are cast in concrete in the formed pile holes, in order to avoid the influence of factors such as sediment at the bottom of the pile hole and soil particles falling during the pouring process on the concrete strength of the pile body, during the construction of cast-in-place piles, the pile top elevation is often 0.5 to 1.0 m higher than the design elevation. Therefore, after the concrete pile body is formed, it is necessary to chisel out the pile head that exceeds the design elevation. For invalid concrete pile heads that exceed the design elevation, electric picks, breaker hammers, hydraulic pile chiseling equipment and other related pile chiseling equipment are often used to chisel out the pile heads. Not only is pile chiseling difficult and time-consuming, but there are also problems such as uneven pile chiseling plane, easy bending and deformation of pile head steel bars, and difficulty in repair after pile chiseling (authorization announcement number CN220414231U). Utility Model Content

[0003] The technical problem solved by the utility model is as follows: for the invalid concrete pile head exceeding the design elevation, not only is it difficult and time-consuming to drill the pile, but also the pile drilling surface is uneven and the pile head steel bar is easy to bend and deform, which makes it difficult to repair.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions: a concrete pile head pre-cracking structure, including a pile foundation and an invalid pile head, a gear is arranged between the invalid pile head and the pile foundation, the outer diameter of the gear is equal to the outer diameter of the pile foundation and the outer diameter of the invalid pile head, and the invalid pile head and the pile foundation are connected by the concrete between the gear tooth gaps.

[0005] The cast-in-place pile is poured with concrete in the formed pile hole. In order to avoid the influence of factors such as sediment at the bottom of the pile hole and soil particles dropped during the pouring process on the concrete strength of the pile body, the pile foundation skeleton is self-contained during the construction of the cast-in-place pile. Gears are placed on the basis of the pile foundation skeleton, and the invalid pile head skeleton is placed on the basis of the gears. After that, concrete is poured to form the pile foundation and the invalid pile head under the restriction of the peripheral structure. The invalid pile head is connected to the pile foundation through the concrete between the gear tooth gaps.

[0006] When pile drilling is required, the operator uses pile drilling equipment to remove the concrete between the gear teeth, and then strikes the gear with a chisel to make the gear rotate, thereby separating the gear from the pile foundation and the invalid pile head.

[0007] The utility model adopts gears to isolate the pile foundation and the invalid pile head, which reduces the difficulty of pile drilling and saves time. After the pile drilling, the pile drilling surface is flat and the subsequent repair is less difficult.

[0008] As an improvement, a vertical pole is inserted into the pile foundation, and the gear is sleeved on the vertical pole, and the vertical pole protrudes the invalid pile head upward. The vertical pole is conducive to the positioning of the gear, so that the invalid pile head, the gear, and the pile foundation are aligned up and down, which is conducive to the smooth progress of the subsequent pile drilling operation. The vertical pole passes through the invalid pile head frame up and down and can be tied together with the invalid pile head frame. When drilling the pile, the gear can rotate around the vertical pole to separate the invalid pile head from the pile foundation. After that, the vertical pole is pulled out from the pile foundation to achieve complete separation of the invalid pile head from the pile foundation.

[0009] As an improvement, a wrench structure is provided on the top of the vertical pole. When drilling piles, after the gear rotates around the vertical pole, the operator uses a wrench to cooperate with the wrench structure to rotate the vertical pole, so that the bottom of the vertical pole trapped in the pile foundation is separated from the pile foundation. After that, the invalid pile head is removed from the pile foundation.

[0010] As an improvement, annular groove structures are provided on the upper and lower surfaces of the gear. The center of the plurality of annular groove structures is the center of the gear. The design of the annular groove structure facilitates the rotation of the gear relative to the ineffective pile head and pile foundation when piles are drilled, and plays a guiding role in the rotation of the gear.

[0011] As an option, a rubber ring is filled between the pole and the center hole of the gear. When drilling piles, the operator strikes the gear radially with a hammer. Since the rubber ring can be elastically deformed, the rubber ring allows the gear to be radially displaced relative to the pole, causing the gear to loosen from the invalid pile head and pile foundation. After that, the gear is rotated to separate from the invalid pile head and pile foundation.

[0012] As an option, the pole is screwed to the gear. When the gear is rotated forward or backward, the gear rises or falls along the pole, and the gear is separated from the invalid pile head and pile foundation. If the pole is loosened due to the rotation of the gear and rotates with the gear, it is not only conducive to the separation of the gear from the invalid pile head, but also to the separation of the pole from the pile foundation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings:

[0014] Figure 1 This is the appearance diagram of the concrete pile head pre-crack structure;

[0015] Figure 2 for Figure 1 A top view of

[0016] Figure 3 is a cross-sectional view of the concrete pile head pre-splitting structure in the first embodiment;

[0017] Figure 4 for Figure 3 A top view of

[0018] Figure 5 is a cross-sectional view of the concrete pile head pre-splitting structure in the second embodiment;

[0019] Figure 6 for Figure 5 A top view of

[0020] Figure 7 A schematic diagram of a gear.

[0021] Explanation of symbols in the figure:

[0022] 10. Pile foundation;

[0023] 20. Invalid pile head;

[0024] 30. Gear; 31. Ring groove structure;

[0025] 40. Concrete between gear teeth;

[0026] 50. upright pole; 51. wrench structure;

[0027] 60. Rubber ring. DETAILED DESCRIPTION

[0028] First embodiment

[0029] Combination Figures 1 to 4 A concrete pile head pre-splitting structure includes a pile foundation 10 and an invalid pile head 20, a gear 30 is arranged between the invalid pile head and the pile foundation, the outer diameter of the gear is equal to the outer diameter of the pile foundation and the outer diameter of the invalid pile head, and the invalid pile head and the pile foundation are connected by concrete 40 between the gear tooth gaps.

[0030] The cast-in-place pile is poured with concrete in the formed pile hole. In order to avoid the influence of factors such as sediment at the bottom of the pile hole and soil particles dropped during the pouring process on the strength of the pile body concrete, during the construction of the cast-in-place pile, the pile foundation skeleton is self-contained, and a gear 30 is placed on the basis of the pile foundation skeleton, and an invalid pile head skeleton is placed on the basis of the gear. After that, under the restriction of the peripheral structure, concrete is poured to form the pile foundation 10 and the invalid pile head 20. The invalid pile head is connected to the pile foundation 10 through the concrete 40 between the gear teeth.

[0031] When pile drilling is required, the operator uses a pile drilling device to remove the concrete between the tooth gaps of the gear 30, and then strikes the gear 30 with a chisel to rotate the gear, thereby separating the gear from the pile foundation 10 and the ineffective pile head 20.

[0032] A vertical rod 50 is inserted on the pile foundation 10, and the gear 30 is sleeved on the vertical rod, and the vertical rod protrudes the invalid pile head 20 upward. The vertical rod 50 is conducive to the positioning of the gear 30, so that the invalid pile head, the gear, and the pile foundation 10 are aligned up and down, which is conducive to the smooth progress of the subsequent pile drilling operation. The vertical rod 50 passes through the invalid pile head frame up and down and can be tied together with the invalid pile head frame. When drilling piles, the gear 30 can rotate around the vertical rod 50 to separate the invalid pile head 20 from the pile foundation 10. After that, the vertical rod 50 is pulled out from the pile foundation to achieve complete separation of the invalid pile head 20 from the pile foundation.

[0033] A wrench structure 51 is provided on the top of the vertical rod 50. When drilling a pile, after the gear 30 rotates around the vertical rod, the operator uses a wrench to cooperate with the wrench structure 51 to rotate the vertical rod so that the bottom of the vertical rod 50 sunk in the pile foundation 10 is separated from the pile foundation. After that, the invalid pile head 20 is removed from the pile foundation 10.

[0034] The upper and lower surfaces of the gear 30 are provided with annular groove structures 31. The center of the plurality of annular groove structures 31 is the center of the gear 30. The design of the annular groove structure facilitates the rotation of the gear 30 relative to the ineffective pile head 20 and the pile foundation 10 during pile drilling, and plays a guiding role in the rotation of the gear 30.

[0035] A rubber ring 60 is filled between the pole 50 and the center hole of the gear 30. When drilling a pile, the operator strikes the gear 30 radially with a hammer. Since the rubber ring 60 can be elastically deformed, the rubber ring allows the gear 30 to radially displace relative to the pole 50, so that the gear 30 and the invalid pile head 20 and pile foundation 10 become loose. After that, the gear 30 is rotated again to separate from the invalid pile head and pile foundation.

[0036] Second embodiment

[0037] Combination Figure 1 , Figure 2 , Figure 5 , Figure 6 A concrete pile head pre-splitting structure includes a pile foundation 10 and an invalid pile head 20, a gear 30 is arranged between the invalid pile head and the pile foundation, the outer diameter of the gear is equal to the outer diameter of the pile foundation and the outer diameter of the invalid pile head, and the invalid pile head and the pile foundation are connected by concrete 40 between the gear tooth gaps.

[0038] A vertical rod 50 is inserted on the pile foundation 10, and the gear 30 is sleeved on the vertical rod, and the vertical rod protrudes upwardly through the ineffective pile head 20. A wrench structure 51 is provided on the top of the vertical rod 50.

[0039] The upper and lower surfaces of the gear 30 are provided with annular groove structures 31. The center of the plurality of annular groove structures 31 is the center of the gear 30. The design of the annular groove structure facilitates the rotation of the gear 30 relative to the ineffective pile head 20 and the pile foundation 10 during pile drilling, and plays a guiding role in the rotation of the gear 30.

[0040] The vertical rod 50 is screwed with the gear 30. The gear 30 is rotated forward or backward, and the gear rises or falls along the vertical rod 50, and the gear is separated from the invalid pile head 20 and the pile foundation 10. If the vertical rod 50 is loosened due to the rotation of the gear 30 and rotates with the gear, it is not only conducive to the separation of the gear from the invalid pile head, but also conducive to the separation of the vertical rod 50 from the pile foundation 10.

[0041] The above contents are only preferred implementation modes of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation mode and application scope. The content of this specification should not be understood as limiting the present invention.

Claims

1. A concrete pile head pre-splitting structure, comprising a pile foundation (10) and an ineffective pile head (20), characterized in that: A gear (30) is provided between the invalid pile head and the pile foundation, the outer diameter of the gear is equal to the outer diameter of the pile foundation and the outer diameter of the invalid pile head, and the invalid pile head and the pile foundation are connected via concrete (40) between the gear tooth gaps.

2. A concrete pile head pre-splitting structure as claimed in claim 1, characterized in that: A vertical pole (50) is inserted on the pile foundation (10), a gear (30) is sleeved on the vertical pole, and an ineffective pile head (20) protrudes upward from the vertical pole.

3. A concrete pile head pre-splitting structure as claimed in claim 2, characterized in that: The upper and lower surfaces of the gear (30) are provided with annular groove structures (31).

4. A concrete pile head pre-splitting structure as claimed in claim 1, characterized in that: A rubber ring (60) is filled between the vertical rod (50) and the central hole of the gear (30).

5. A concrete pile head pre-splitting structure as claimed in claim 1, characterized in that: The vertical rod (50) is threadedly connected to the gear (30).

6. A concrete pile head pre-splitting structure as claimed in claim 2, characterized in that: A wrench structure (51) is provided on the top of the vertical rod (50).

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