A cast-in-place pile reinforcement cage positioning structure

Abstract

The utility model discloses a kind of bored pile reinforcement cage positioning structures, including at least one pair of mutually parallel setting and equal-diameter annular parts;Connecting rod, multiple groups The connecting rod is vertically around the outer periphery of the annular part, and the annular part is coaxially connected with a certain spacing;Main reinforcement sleeve is arranged outside the lower annular part, and is connected with the corresponding connecting rod;Positioning link end is connected with annular part, and adjacent positioning link is a certain angle, and the reinforcement cage positioning structure is suitable for bored pile reinforcement cage installation positioning construction, especially suitable for the bored pile with empty pile part or reinforcement cage below mud surface.

Description

Technical Field

[0001] This utility model belongs to the technical field of auxiliary devices for pile foundation construction, and specifically relates to a positioning structure for a cast-in-place pile reinforcement cage. Background Technology

[0002] In pile foundation construction, the installation of the reinforcing cage is a crucial step. Excessive misalignment of the reinforcing cage's center point can lead to eccentric compression of the pile, reducing its load-bearing capacity and posing a significant quality hazard. Furthermore, inaccurate elevation control of the reinforcing cage necessitates subsequent cutting and splicing to ensure adequate anchorage length, impacting project progress and costs.

[0003] Therefore, the traditional method for planar positioning of reinforcing cages is to symmetrically install ear rings or spacers around the reinforcing hoops of the cage. If the empty pile of the cast-in-place pile is relatively long, it is necessary to extend the reinforcing cage to the top elevation of the steel casing based on the original design length for planar positioning. This method has drawbacks such as large reinforcement usage, non-reusability, and inconvenient positioning, which is detrimental to project cost control. In addition, when the diameters of the reinforcing cage and the steel casing differ significantly, it can easily lead to difficulties in positioning the reinforcing cage, and the reinforcing cage is prone to displacement during hoisting and vibration. Utility Model Content

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A positioning structure for a cast-in-place pile reinforcement cage includes: At least one pair of annular components that are parallel to each other and have the same diameter; A connecting rod, wherein multiple sets of the connecting rods are vertically wrapped around the outer periphery of the annular component, and the annular component is coaxially connected at a certain interval; The main reinforcement sleeve is disposed outside the lower ring-shaped component and connected to the corresponding connecting rod; At least one pair of positioning links, the ends of which are connected to a ring-shaped component, and adjacent positioning links form a certain angle; The connecting rod includes an upper connecting rod and a lower connecting rod sleeved on the outer periphery of the upper connecting rod and slidable relative to it; The upper and lower connecting rods have several sets of adjustment through holes evenly distributed along their length on their outer periphery, which can be matched with fasteners.

[0005] Furthermore, the main reinforcement sleeve has an open end, which is located on the side away from the positioning link.

[0006] Furthermore, the length of the main reinforcement sleeve is not less than 30cm.

[0007] Furthermore, there are four connecting rods.

[0008] Furthermore, the positioning linkage consists of two rods, which are arranged perpendicularly to each other.

[0009] Furthermore, the ring-shaped components are in pairs.

[0010] Furthermore, the lower ring-shaped component is connected to the lower connecting rod, and the upper ring-shaped component is connected to the upper connecting rod.

[0011] Compared with the prior art, this utility model has the following advantages: This rebar cage positioning tool, through connecting rods of a certain length, main reinforcement sleeves, and ring-shaped parts, can quickly and accurately position the rebar cage, improving the installation quality of the rebar cage. At the same time, the tool can be reused, effectively saving project costs. Compared to traditional methods, this positioning structure eliminates the time spent on cutting and extending the anchoring reinforcement bars later, thus accelerating the construction progress. This positioning tool can save more than 60% of the time for lowering the cast-in-place pile reinforcement cage, and the overall cost can be reduced by more than 40%. The more cast-in-place piles are constructed, the more significant the economic benefits will be. This steel cage positioning structure is suitable for the installation and positioning of steel cages in bored cast-in-place piles, especially for cast-in-place piles with empty pile sections or steel cages located below the mud surface. Attached Figure Description

[0012] Figure 1 This is a schematic diagram illustrating the overall structure of a specific embodiment of the present utility model; Figure 2 This is a physical diagram of the positioning structure for this steel cage; Figure 3 Flowchart of the process for precise and efficient positioning of steel reinforcement cages; Figure 4 This is a schematic diagram of the main structure of the connecting rod; Figure 5 This is a schematic diagram of the exploded structure of the connecting rod; The reference numerals in the accompanying drawings include: 1. Ring component, 2. Connecting rod, 20. Upper connecting rod, 21. Lower connecting rod, 22. Fastener, 23. Adjusting through hole, 3. Main reinforcement sleeve, 4. Positioning connecting rod, 5. Reinforcing cage. Detailed Implementation

[0013] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0014] The accompanying drawings are for illustrative purposes only and represent schematic diagrams, not actual physical objects. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The same or similar reference numerals in the drawings of the embodiments of this utility model correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" appear, indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms describing positional relationships in the drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0015] like Figure 1 - Figure 2 As shown, the present invention provides a positioning structure for a cast-in-place pile reinforcement cage, comprising at least one pair of parallel and equal-diameter annular members 1, multiple sets of connecting rods 2, at least one pair of positioning connecting rods 4, and a main reinforcement sleeve 3. Multiple sets of connecting rods 2 are vertically wrapped around the outer circumference of the annular part 1, and the annular part 1 is coaxially connected at a certain interval; The main reinforcement sleeve 3 is located outside the lower ring component 1 and is connected to the corresponding connecting rod 2; The ends of the positioning links 4 are all connected to the ring part 1, and there is a certain angle between adjacent positioning links 4.

[0016] This rebar cage 5 positioning tool, through a connecting rod 2 of a certain length, a main reinforcement sleeve 3, and a ring part 1, can quickly and accurately position the rebar cage 5, improve the installation quality of the rebar cage 5, and the tool can be reused, effectively saving project costs. Compared to traditional methods, this positioning structure eliminates the time spent on cutting and extending the anchoring reinforcement bars later, thus accelerating the construction progress. This positioning tool can save more than 60% of the time required to lower the reinforcing cage of the cast-in-place pile, and the overall cost can be reduced by more than 40%. The more cast-in-place piles are constructed, the more significant the economic benefits will be. This rebar cage 5 positioning structure is suitable for the installation and positioning of the rebar cage 5 in bored cast-in-place piles, especially for cast-in-place piles with empty pile sections or where the rebar cage 5 is located below the mud surface.

[0017] When positioning the steel cage 5, the verticality of the steel cage 5 is accurately controlled by observing the moving upper ring 1. The ring 1 has two positioning connecting rods 4 welded inside, forming a cross positioning ring, which is used to control the horizontal position.

[0018] Move the positioning structure until it aligns the rebar cage 5 with the design coordinate crosshair at the center point, thus completing the planar positioning of the rebar cage 5. After positioning, temporarily fix the crosshair positioning ring around the steel casing using hooks to determine the relative positions of the rebar cage 5 and the steel casing.

[0019] Once the positioning is complete, this positioning tool can be removed and reused on the next steel cage 5 for positioning, which is convenient for operation.

[0020] The positioning structure tool for the reinforcing cage 5 consists of a positioning ring composed of a cross-shaped positioning connecting rod 4 and a ring-shaped component 1, a main reinforcement sleeve, and a connecting rod 2. Two circular steel rings with the same diameter as the reinforcing hoop of the reinforcing cage 5 are made. Two positioning connecting rods 4 are welded inside one of the ring-shaped components 1, arranged in a cross shape, with the intersection point being the center of the steel ring.

[0021] The two ends of the four connecting rods 2 are welded and reinforced to the upper and lower ring parts 1 respectively to ensure their verticality. The length of the connecting rods 2 can be increased according to the length of the empty pile.

[0022] The main reinforcement sleeve 3 has an open end, which is located on the side away from the positioning link 4; A main reinforcement sleeve 3, approximately 30cm long, is welded to the lower end of the connecting rod 2. The inner diameter of the main reinforcement sleeve 3 is slightly larger than the diameter of the main reinforcement in the steel cage 5, allowing it to be freely inserted into the upper anchorage zone of the steel cage 5. Of course, the length of the connecting rod 2 can be adjusted according to the actual situation; in this embodiment, the length of the connecting rod 2 is greater than 30cm.

[0023] like Figure 4 , Figure 5 As shown, the cross-section of the connecting rod 2 can be rectangular or circular. The connecting rod 2 specifically includes an upper connecting rod 20 and a lower connecting rod 21 that is sleeved on the outer periphery of the upper connecting rod 20 and can slide relative to it. Several sets of adjustment through holes 23 that can cooperate with fasteners 22 are evenly distributed along the length of the outer periphery of the upper connecting rod 20 and the lower connecting rod 21.

[0024] The lower annular component 1 is connected to the lower connecting rod 21, and the upper annular component 1 is connected to the upper connecting rod 20.

[0025] The connecting rod 2 is telescopic and adjustable in length, which is beneficial for use with steel cages of different heights. In actual operation, the upper connecting rod 20 and the lower connecting rod 21 are pulled to a suitable length, and the fasteners 22, such as bolts, are inserted into the corresponding adjustment through holes 23 to limit the length of the connecting rod 2 at this time.

[0026] This application also discloses the precise and efficient positioning process of the aforementioned rebar cage 5, such as... Figure 3 As shown; After the construction of the steel casing for the bored pile is completed, and the hole is formed and the reinforcing cage 5 is lowered, the positioning tool for the reinforcing cage 5 is installed on the main reinforcement bars in four directions of the reinforcing cage 5, and its horizontality is controlled by moving the cross-shaped ring 1 / positioning ring, thus ensuring that the verticality of the reinforcing cage 5 meets the requirements. After the verticality is adjusted, four pile position control points are measured and set around the pile position using the cross method to determine the pile center position. The center point of the cross positioning ring is adjusted to coincide with the pile center position, thus completing the positioning. The rebar cage 5 positioning structure tool has low material cost, is easy to process and manufacture, and can be reused repeatedly, achieving efficient and accurate positioning of the rebar cage 5 and reducing the difficulty of on-site rebar cage 5 positioning construction. When positioning the rebar cage 5, it is only necessary to move the entire rebar cage 5 so that the cross positioning ring coincides with the cross positioning center of the rebar cage 5 laid out. This achieves the purpose of planar positioning of the rebar cage 5, avoiding the procedures of calculation and multiple verifications with a measuring tape. This improves construction efficiency and effectively enhances the installation quality of the rebar cage 5. Compared to traditional construction methods, this eliminates the time spent on cutting and extending anchor bars in the later stages, thus accelerating the construction progress.

[0027] In a highway construction project, the bridge piers were designed with bored cast-in-place piles at the base. Due to poor soil conditions, steel casings were used as the retaining structure for lowering the reinforcing cage. A 35cm diameter difference between the steel casing and the reinforcing cage caused misalignment and poor verticality of the cage during lowering and concrete pouring, affecting the construction quality of the bored cast-in-place piles. After implementing the method described above, the positioning accuracy of the reinforcing cage in the bored cast-in-place piles was significantly improved.

[0028] On-site calculations show that the traditional rebar cage splicing method requires 300 yuan worth of rebar raw materials and 250 yuan worth of labor per pile. The positioning device costs 300 yuan to process and can be reused. Based on the project volume, this method can save approximately 54,700 yuan in construction costs and 12 days of construction time, demonstrating significant economic benefits. The rebar cage positioning device used is reusable, saves resources, generates no waste, and is environmentally friendly. It has been well received by various enterprises and has good social benefits.

[0029] The above are merely embodiments of this utility model. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are aware of all existing technologies in that field, and have the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, based on the guidance provided in this application, improve and implement this solution in combination with their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent.

Claims

1. A positioning structure for a cast-in-place pile reinforcement cage, characterized in that, include: At least one pair of annular parts (1) arranged parallel to each other and of equal diameter; Connecting rod (2), multiple sets of the connecting rod (2) are vertically wrapped around the outer periphery of the annular part (1) and the annular part (1) is coaxially connected at a certain interval; The main reinforcement sleeve (3) is disposed outside the lower ring member (1) and connected to the corresponding connecting rod (2); At least one pair of positioning links (4), the ends of which are connected to the ring (1), and the adjacent positioning links (4) form a certain angle; The connecting rod (2) includes an upper connecting rod (20) and a lower connecting rod (21) that is sleeved on the outer periphery of the upper connecting rod (20) and can slide relative to it. The upper connecting rod (20) and the lower connecting rod (21) have several sets of adjustment through holes (23) that can cooperate with fasteners (22) evenly distributed along the length direction on the outer periphery.

2. The positioning structure for the reinforcing cage of a cast-in-place pile as described in claim 1, characterized in that: The main reinforcement sleeve (3) has an open end, which is located on the side away from the positioning link (4).

3. A positioning structure for a cast-in-place pile reinforcement cage as described in claim 1 or 2, characterized in that: The length of the main reinforcement sleeve (3) shall not be less than 30cm.

4. The positioning structure for the reinforcing cage of a cast-in-place pile as described in claim 1, characterized in that: There are four connecting rods (2).

5. A positioning structure for a cast-in-place pile reinforcement cage as described in claim 1, 2, or 4, characterized in that: The positioning link (4) consists of two links, which are perpendicular to each other.

6. The positioning structure for the reinforcing cage of a cast-in-place pile as described in claim 5, characterized in that: The ring-shaped parts (1) are a pair.

7. The positioning structure for the reinforcing cage of a cast-in-place pile as described in claim 6, characterized in that: The lower ring (1) is connected to the lower connecting rod (21), and the upper ring (1) is connected to the upper connecting rod (20).

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