Foundation cast-in-place pile

Abstract

The utility model relates to the technical field of civil engineering, in particular to a foundation cast-in-place pile. Comprising a pile body, a reinforcement cage is placed in the pile body, the reinforcement cage comprises a plurality of vertical ribs evenly distributed in the circumferential direction and a plurality of sleeve ribs evenly distributed in the axial direction of the pile body, the vertical ribs are fixed in the sleeve ribs, each sleeve rib comprises a ring part, a lower hook part is machined at the first end of each ring part, and an upper hook part is machined at the second end of each ring part; the upper hook part and the lower hook part are fixedly connected to form a hooking part, one of the vertical ribs in the sleeve rib penetrates through the hooking part, an inclined part is machined at the free end of the upper hook part, and the end, away from the upper hook part, of the inclined part inclines upwards. According to the foundation cast-in-place pile, the end, away from the upper hook part, of the inclined part makes contact with the inner edge of the pile body, the end, away from the upper hook part, of the inclined part makes contact with the inner edge of the pile body, a reinforcement cage can be prevented from moving upwards in the pile body, and therefore the situation that the reinforcement cage is dragged to float upwards in the process of pouring concrete into the pile body can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of civil engineering technology, specifically to a foundation cast-in-place pile. Background Technology

[0002] The Puguang Gas Field primarily adopts a distributed pressurization model, utilizing the existing surface system to construct two pressurization stations. Pressurization Station #1 is an expansion of the P102 gas gathering station, equipped with three 500,000 cubic meter compressors, mainly pressurizing gas from wells under the jurisdiction of Gathering Station #1. Pressurization Station #2 is an expansion of the material storage area east of the purification plant, equipped with four 1,500,000 cubic meter compressors, mainly pressurizing gas from wells under the jurisdiction of Gathering Stations #2 and #3. The first phase of the Puguang Gas Field's main wet gas pressurization project primarily involves the construction of a new pressurization station with a pressurization capacity of 280 × 10⁴ Nm³ / d.

[0003] For the construction of the booster station's pile foundation, cast-in-place piles are selected because they have advantages such as no vibration during construction, no soil displacement, low noise, and suitability for use in densely built-up urban areas.

[0004] Patent document CN205676892U discloses a cast-in-place pile for building foundations in civil engineering. This pile, by adding sub-pile holes and reinforcing sub-piles, increases the load-bearing area compared to traditional cast-in-place piles. The reinforcing sub-piles increase the compressive strength of the pile and make it more robust. This invention has a simple structure and can effectively improve the compressive strength of cast-in-place piles, reduce pile settlement, protect building safety, and extend service life. However, during construction, when the concrete reaches the bottom of the reinforcing cage, the upward pressure from the concrete overflowing the guide pipe can cause the reinforcing cage to float, affecting the pouring quality.

[0005] To address the aforementioned technical issues, patent document CN215801575U discloses a cast-in-place pile for civil engineering foundations. During construction, firstly, a reinforcing cage is placed inside the main pile body, with three insertion tubes sliding within sliding grooves. Then, pulling a traction rope pulls out a limiting block, causing a spring inside the insertion tube to extend an extension rod, which then inserts into the main pile body. The insertion tubes effectively prevent the reinforcing cage from swaying left and right, significantly improving the quality of the grouting. At this point, a fixing hook is inserted into the upper side wall of the main pile body. Finally, a pile cover is placed on top, with the fixing groove engaging with the lower side of the pile cover, and the fixing hook engaging with the limiting groove of the pile cover to secure the pile cover to the main pile body. However, this cast-in-place pile requires the installation of insertion tubes, coil springs, extension rods, springs, limiting blocks, and traction ropes on the reinforcing cage, resulting in high manufacturing costs for the reinforcing cage. Utility Model Content

[0006] The main purpose of this utility model is to provide a low-cost foundation pile that can prevent the steel cage from being dragged and floating during the concrete pouring process.

[0007] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0008] A foundation cast-in-place pile includes a pile body, within which a reinforcing cage is placed. The reinforcing cage includes multiple vertical bars evenly distributed around the circumference and multiple sleeve bars evenly distributed along the axial direction of the pile body. The multiple vertical bars are fixed within the multiple sleeve bars. Each sleeve bar includes a ring portion. A lower hook portion is machined at the first end of the ring portion, and an upper hook portion is machined at the second end of the ring portion. The upper hook portion and the lower hook portion are fixedly connected to form a hook portion. One of the multiple vertical bars within the sleeve bar passes through the hook portion. An inclined portion is machined on the free end of the upper hook portion. The end of the inclined portion away from the upper hook portion is inclined upwards, and the end of the inclined portion away from the upper hook portion contacts the inner wall of the pile body.

[0009] Specifically, the two adjacent vertical bars in the circumferential direction of the pile are located in the interlocking part of the two adjacent sets of bars above and below.

[0010] Specifically, the upper end of the vertical bar is machined with an arc-shaped hook that bends outward towards the outside of the reinforcing cage, and the upper end of the pile body is machined with a groove corresponding to the arc-shaped hook. The arc-shaped hook is located in the groove, and the cooperation between the arc-shaped hook and the groove limits the axial direction of the reinforcing cage in the pile body.

[0011] Specifically, the upper and lower hooks bend in opposite directions.

[0012] Specifically, the vertical ribs and the sleeve ribs are welded and fixedly connected.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This foundation cast-in-place pile has an inclined part on the reinforcing bar, and the end of the inclined part away from the upper hook part contacts the inner edge of the pile body. The contact between the end of the inclined part away from the upper hook part and the inner edge of the pile body can prevent the reinforcing cage from moving upward in the pile body. Therefore, it can prevent the reinforcing cage from being dragged and floating upward during the process of pouring concrete into the pile body.

[0015] 2. The inclined part set on the reinforcing bar and its cooperation with the inner edge of the pile body prevent the reinforcing cage from moving upward in the pile body, resulting in low manufacturing cost of the reinforcing cage.

[0016] 3. The combination of the arc-shaped hook and the slot limits the axial movement of the reinforcing cage within the pile body, making it easy to position the reinforcing cage within the pile body.

[0017] 4. Since the two adjacent vertical bars in the circumferential direction of the pile are located in the interlocking part of the two adjacent sets of bars, the multiple inclined parts on the multiple sets of bars can make the steel cage set in the center of the pile body, which can improve the structural strength of the foundation cast-in-place pile. Attached Figure Description

[0018] Figure 1 This is a cross-sectional view of the present invention.

[0019] Figure 2 This is a schematic diagram showing the vertical ribs located within the connecting section.

[0020] Figure 3 This is a top view of the reinforcement bars.

[0021] The components in the attached diagram are named as follows: 1. Pile body, 2. Vertical reinforcement, 3. Slot, 4. Reinforcing bar, 401. Ring, 402. Lower hook, 403. Upper hook, 404. Inclined part. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Example 1: Refer to Figures 1-3 As shown, a foundation cast-in-place pile includes a pile body 1, and a steel cage is placed inside the pile body 1.

[0024] The reinforcing cage includes multiple vertical bars 2 evenly distributed around the circumference and multiple sleeve bars 4 evenly distributed along the axial direction of the pile body 1. The multiple vertical bars 2 are fixed inside the multiple sleeve bars 4. Specifically, the vertical bars 2 and the sleeve bars 4 are welded and fixedly connected.

[0025] The sleeve rib 4 includes a ring portion 401. The first end of the ring portion 401 is machined with a lower hook portion 402, and the second end of the ring portion 401 is machined with an upper hook portion 403. The upper hook portion 403 and the lower hook portion 402 have opposite bending directions. The upper hook portion 403 and the lower hook portion 402 are fixedly connected to form a hook portion. One of the multiple vertical ribs 2 in the sleeve rib 4 passes through the hook portion.

[0026] Two adjacent vertical bars 2 in the circumferential direction of the pile body 1 are located in the interlocking part of two adjacent sets of bars 4. Multiple inclined parts 404 on multiple sets of bars 4 enable the steel cage to be centrally positioned within the pile body 1.

[0027] An inclined portion 404 is machined on the free end of the upper hook portion 403. The end of the inclined portion 404 away from the upper hook portion 403 is inclined upward, and the end of the inclined portion 404 away from the upper hook portion 403 contacts the inner wall of the pile body 1. The contact between the end of the inclined portion 404 away from the upper hook portion 403 and the inner edge of the pile body 1 can prevent the reinforcing cage from moving upward inside the pile body 1, thus avoiding the situation where the reinforcing cage is dragged and floats upward during the process of pouring concrete into the pile body 1.

[0028] When assembling the reinforcing cage, multiple vertical bars 2 are made to pass through multiple sleeve bars 4, and adjacent vertical bars 2 in the circumferential direction of the pile body 1 are respectively located in the interlocking parts of two adjacent sleeve bars 4. Then the sleeve bars 4 and vertical bars 2 are welded and fixedly connected.

[0029] When the steel cage is lowered into the pile body 1, since the end of the inclined part 404 away from the upper hook part 403 is inclined upward, the inclined part 404 will not affect the downward movement of the steel cage in the pile body 1. During the downward movement of the steel cage in the pile body 1, the end of the inclined part 404 away from the upper hook part 403 slides in contact with the inner wall of the pile body 1.

[0030] When concrete is poured into the pile body 1, the pressure of the concrete pouring out from the guide pipe from bottom to top is relatively large, which will cause the reinforcing cage to have an upward tendency. However, under the action of the friction between the end of the inclined part 404 away from the upper hook part 403 and the inner wall of the pile body 1, the upward movement of the reinforcing cage can be restricted. Therefore, the stability of the reinforcing cage is good when concrete is poured into the pile body 1.

[0031] Since the two adjacent vertical bars 2 in the circumferential direction of the pile body 1 are located in the interlocking part of the two adjacent sets of bars 4, the multiple inclined parts 404 are spirally distributed on the outside of the steel cage, so that the steel cage can be centered in the pile body 1. After the concrete is poured into the pile body 1, the structural strength of the foundation cast-in-place pile can be improved.

[0032] Example 2: Based on Example 1, referring to... Figure 1 As shown, the upper end of the vertical bar 2 is machined with an arc-shaped hook that bends outward towards the outside of the steel cage, and the upper end of the pile body 1 is machined with a groove 3 corresponding to the arc-shaped hook. The arc-shaped hook is located in the groove 3, and the cooperation between the arc-shaped hook and the groove 3 limits the axial direction of the steel cage in the pile body 1.

[0033] The axial direction of the reinforcing cage is limited by the cooperation of the arc hook and the slot 3, making it easy to position the reinforcing cage in the pile body 1.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bored pile, comprising a pile body (1) in which a reinforcement cage is placed, characterized in that, The reinforcing cage comprises a plurality of vertical bars (2) arranged uniformly in the circumference and a plurality of sleeve bars (4) arranged uniformly in the axial direction of the pile body (1), the plurality of vertical bars (2) are fixed in the plurality of sleeve bars (4), the sleeve bar (4) comprises a ring part (401), a lower hook part (402) is processed at the first end of the ring part (401), an upper hook part (403) is processed at the second end of the ring part (401), the upper hook part (403) and the lower hook part (402) are fixedly connected to form a hooking part, one of the plurality of vertical bars (2) in the sleeve bar (4) penetrates through the hooking part, an inclined part (404) is processed on the free end of the upper hook part (403), the end of the inclined part (404) away from the upper hook part (403) is inclined upward, and the end of the inclined part (404) away from the upper hook part (403) is in contact with the inner wall of the pile body (1).

2. The cast-in-place pile according to claim 1, wherein The two vertical bars (2) adjacent in the circumferential direction of the pile body (1) are located in the hooking parts of the two sleeve bars (4) adjacent upward and downward, respectively.

3. The cast-in-place pile according to claim 1, wherein An arc-shaped hook curved to the outside of the reinforcing cage is processed at the upper end of the vertical bar (2), a clamping groove (3) corresponding to the arc-shaped hook is processed in the upper end of the pile body (1), the arc-shaped hook is located in the clamping groove (3), and the cooperation of the arc-shaped hook and the clamping groove (3) limits the axial direction of the reinforcing cage in the pile body (1).

4. The cast-in-place pile according to claim 1, wherein The bending directions of the upper hook part (403) and the lower hook part (402) are opposite.

5. The type of bored pile according to claim 1, characterized by, The vertical bar (2) and the sleeve bar (4) are fixedly connected through welding.

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