Pile foundation reinforcement cage guiding and positioning device

Abstract

The utility model provides a guiding and positioning device for a pile foundation reinforcement cage, and belongs to the technical field of bridge construction. The problem that in the construction process of an existing pile foundation reinforcement cage, the reinforcement cage is difficult to position and install is solved. The device comprises a square frame and a guiding round steel cylinder, the guiding round steel cylinder is arranged in the square frame, four connecting plates are horizontally arranged on the edge of the top of the guiding round steel cylinder at equal intervals in the circumferential direction, and one end of each connecting plate is connected with the edge of the top of the guiding round steel cylinder; the four connecting plates are in lap joint with the tops of the four edges of the square frame correspondingly, reinforcement cage fixing steel pipes are horizontally arranged at the four corners of the top of the square frame correspondingly, and the reinforcement cage fixing steel pipes stretch out and draw back towards the center direction of the square frame. The device is mainly used for bridge pile foundation reinforcement cage construction.

Description

Technical Field

[0001] This utility model belongs to the field of bridge construction technology, and in particular relates to a guide and positioning device for pile foundation steel cage. Background Technology

[0002] Pile foundations are crucial load-bearing structures in bridge foundation engineering. Through the piles, they transfer the static and dynamic loads of the superstructure to deep, stable strata or rock layers underground, dispersing ground pressure and preventing localized soil failure. Furthermore, pile foundations can penetrate weak, highly compressible soil layers or water bodies, significantly increasing the bearing capacity of the foundation by relying on deep bearing layers or pile friction, meeting the strength requirements of large bridges. Moreover, pile foundations can resist horizontal loads such as water erosion, earthquakes, and uneven settlement, preventing bridge overturning or sliding and ensuring the overall structural safety. They are an essential component of bridge structures.

[0003] The pile foundation is formed by pouring concrete into a reinforced concrete cage. The upper part of the reinforced concrete cage is connected to the pier column. During pile foundation construction, drilling is first performed using a drilling rig. After the pile hole is formed, the reinforced concrete cage is installed below. After the cage is installed, concrete is poured. The next step is to circumferentially cut the pile head and connect the pre-reserved reinforcing bars at the top of the pile to the reinforcing bars of the pier column. Therefore, the accuracy of positioning during the construction of the reinforced concrete cage is crucial. Furthermore, the pile foundation construction uses a protective casing, the diameter of which is approximately 20cm larger than the pile diameter, presenting certain technical challenges during the installation of the reinforced concrete cage. Utility Model Content

[0004] In view of this, the present invention aims to propose a guide and positioning device for pile foundation steel cages to solve the problem of difficult positioning and installation of steel cages during the construction of existing pile foundation steel cages.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a pile foundation reinforcement cage guiding and positioning device, comprising a square frame and a guide cylindrical steel cylinder, wherein the guide cylindrical steel cylinder is disposed within the square frame, and four connecting plates are evenly spaced and horizontally arranged along the circumferential direction at the top edge of the guide cylindrical steel cylinder, one end of each connecting plate being connected to the top edge of the guide cylindrical steel cylinder, the four connecting plates respectively overlapping the top of the four sides of the square frame, and reinforcement cage fixing steel pipes are horizontally arranged at the four corners of the top of the square frame, the reinforcement cage fixing steel pipes extending and retracting towards the center of the square frame.

[0006] Furthermore, steel pipe fixing plates are provided at the four corners of the square frame. The steel pipe fixing plates are U-shaped, and the steel reinforcing cage fixing steel pipes pass through the steel pipe fixing plates and slide in cooperation with the steel pipe fixing plates.

[0007] Furthermore, corner bracing steel plates are provided at the four corners of the square frame, and the steel pipe fixing steel plates are set on the corner bracing steel plates.

[0008] Furthermore, the two ends of the steel pipe fixing plate are connected to the angle brace steel plate through the first rib plate.

[0009] Furthermore, a limiting rod is provided at the outer end of the steel pipe fixing the reinforcing cage, and the limiting rod contacts and engages with the outer side of the steel plate fixing the steel pipe.

[0010] Furthermore, the top of the four sides of the square frame is provided with a connecting plate fixing plate that cooperates with the connecting plate. The connecting plate fixing plate is located above the connecting plate and is connected to the square frame by bolts.

[0011] Furthermore, the connecting plate fixing plate is provided with fastening bolts, the bottom end of which penetrates the connecting plate fixing plate and contacts and engages with the connecting plate.

[0012] Furthermore, a second rib is provided between the bottom of the connecting plate and the outer wall of the guide cylindrical steel cylinder.

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

[0014] 1. This utility model provides a pile foundation reinforcement cage guiding and positioning device, in which a guide cylindrical steel cylinder and a square frame are respectively set on the inner and outer sides of the casing. The position of the guide cylindrical steel cylinder in the casing is adjusted and determined by the connecting plate. The guide cylindrical steel cylinder is used to accurately position the lowering position of the reinforcement cage and guide the lowering of the reinforcement cage, thereby achieving accurate positioning during the construction process of the pile foundation reinforcement cage and reducing the installation difficulty of the reinforcement cage.

[0015] 2. This utility model provides a pile foundation reinforcement cage guiding and positioning device. Reinforcement cage fixing steel pipes are set at the four corners of a square frame. During the segmented installation and splicing of the reinforcement cage, the reinforcement cage fixing steel pipes are inserted into the reinforcement cage to fix and stabilize the reinforcement cage, which facilitates the subsequent welding and splicing of the reinforcement cage.

[0016] 3. This utility model provides a pile foundation reinforcement cage guiding and positioning device. This device is easy to disassemble and assemble, which is conducive to prefabricated installation and disassembly as well as subsequent storage. It occupies little space and can be reused. It can accurately position the pile foundation reinforcement cage during construction, improve construction quality, and reduce subsequent maintenance costs. Attached Figure Description

[0017] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0018] Figure 1This is a schematic diagram of the overall structure of the pile foundation reinforcement cage guiding and positioning device and the casing after assembly according to this utility model;

[0019] Figure 2 This is a top view of the guide cylindrical steel cylinder in the pile foundation reinforcement cage guiding and positioning device of this utility model;

[0020] Figure 3 This is a side view of the structure of the guide cylindrical steel cylinder in the pile foundation reinforcement cage guiding and positioning device of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure at the steel pipe fixing point of the reinforcing cage in the pile foundation reinforcing cage guiding and positioning device of this utility model.

[0022] 1-Square frame, 2-Guide round steel cylinder, 3-Connecting plate, 4-Reinforcing cage fixing steel pipe, 5-Steel pipe fixing steel plate, 6-Angle brace steel plate, 7-First rib plate, 8-Limiting rod, 9-Connecting plate fixing plate, 10-Fasting bolt, 11-Second rib plate, 12-Cylinder. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present utility model can be combined with each other, and the described embodiments are only some embodiments of the present utility model, not all embodiments.

[0024] See Figure 1-4 This embodiment describes a pile foundation reinforcement cage guiding and positioning device, which includes a square frame 1 and a guide cylindrical steel cylinder 2. The guide cylindrical steel cylinder 2 is disposed inside the square frame 1. Four connecting plates 3 are evenly spaced and horizontally arranged along the top edge of the guide cylindrical steel cylinder 2. One end of each connecting plate 3 is connected to the top edge of the guide cylindrical steel cylinder 2. The four connecting plates 3 are respectively overlapped on the top of the four sides of the square frame 1. Reinforcement cage fixing steel pipes 4 are horizontally arranged at the four corners of the top of the square frame 1. The reinforcement cage fixing steel pipes 4 extend and retract toward the center of the square frame 1.

[0025] In this embodiment, the guide cylindrical steel cylinder 2 has a diameter of 180cm, is made of 6mm thick sheet metal, and has a height of 30cm. The square frame 1 is welded from four 230cm long I-beams, with an inner clearance of 210cm. In this embodiment, the protective cylinder 12 has a diameter of 200cm. Figure 1As shown, the guide cylindrical steel cylinder 2 and the square frame 1 are respectively set on the inner and outer sides of the casing 12. The position of the guide cylindrical steel cylinder 2 inside the casing 12 is adjusted and determined by the connecting plate 3. The guide cylindrical steel cylinder 2 is used to accurately position the lowering position of the steel cage and guide the lowering of the steel cage, thereby achieving accurate positioning during the construction of the pile foundation steel cage and reducing the installation difficulty of the steel cage.

[0026] In this embodiment, steel pipe fixing plates 5 are provided at the four corners of the square frame 1. The steel pipe fixing plates 5 are in the shape of a gate. The steel rebar cage fixing steel pipe 4 passes through the steel pipe fixing plates 5 and slides with the steel pipe fixing plates 5. The steel pipe fixing plates 5 play a limiting and guiding role for the steel rebar cage fixing steel pipe 4.

[0027] In this embodiment, corner bracing steel plates 6 are provided at the four corners of the square frame 1. The steel pipe fixing steel plates 5 are placed on the corner bracing steel plates 6. The corner bracing steel plates 6 play a role in placing and supporting the steel pipe fixing steel plates 5. In this embodiment, three steel pipe fixing steel plates 5 are provided at each corner of the square frame 1, which are respectively connected to the corner bracing steel plates 6 and the square frame 1.

[0028] In this embodiment, the two ends of the steel pipe fixing plate 5 are connected to the corner brace plate 6 through the first rib plate 7. The first rib plate 7 is used for the connection between the steel pipe fixing plate 5 and the corner brace plate 6.

[0029] In this embodiment, a limiting rod 8 is provided at the outer end of the steel pipe 4 for fixing the reinforcing cage. The limiting rod 8 contacts and cooperates with the outer side of the steel plate 5 for fixing the steel pipe, and the limiting rod 8 plays a limiting role in fixing the steel pipe 4 for fixing the reinforcing cage.

[0030] In this embodiment, the top of the four sides of the square frame 1 is provided with a connecting plate fixing plate 9 that cooperates with the connecting plate 3. The connecting plate fixing plate 9 is located above the connecting plate 3 and is connected to the square frame 1 by bolts. The connecting plate fixing plate 9 serves to limit the position of the connecting plate 3.

[0031] In this embodiment, a fastening bolt 10 is provided on the connecting plate fixing plate 9. The bottom end of the fastening bolt 10 penetrates the connecting plate fixing plate 9 and contacts and engages with the connecting plate 3. The fastening bolt 10 fixes the guide steel cylinder 2 through the connecting plate 3.

[0032] In this embodiment, a second rib 11 is provided between the bottom of the connecting plate 3 and the outer wall of the guide cylindrical steel cylinder 2. The second rib 11 is used to strengthen the connection strength between the connecting plate 3 and the guide cylindrical steel cylinder 2.

[0033] The working principle of this embodiment is as follows:

[0034] First, the guide cylindrical steel cylinder 2 is placed on the square frame 1 and assembled using the connecting plate 3. The connecting plate fixing plate 9 is then installed, and the assembled device is placed on the protective cylinder 12. The guide cylindrical steel cylinder 2 and the square frame 1 are positioned on the inner and outer sides of the protective cylinder 12, respectively. After adjusting the position of the guide cylindrical steel cylinder 2 to ensure that it is centered on the protective cylinder 12, the four fastening bolts 10 are tightened to fix the position of the guide cylindrical steel cylinder 2. The fixed guide cylindrical steel cylinder 2 not only achieves positioning but also guides the reinforcing cage. The reinforcing cage is lowered through the guide cylindrical steel cylinder 2. During the segmented installation and extension process, after the first segment of the reinforcing cage is lowered, the reinforcing cage fixing steel pipe 4 is pushed inward so that it is inserted into the inside of the reinforcing cage, thus fixing and stabilizing the reinforcing cage. The second segment of the reinforcing cage is then hoisted and welded to the fixed first segment of the reinforcing cage. After the connection is completed, the reinforcing cage fixing steel pipe 4 is pulled out, and the reinforcing cage is lowered again. The subsequent segments of the reinforcing cage are then extended in a cyclical manner.

[0035] This device is easy to assemble and disassemble, facilitating modular installation, disassembly, and subsequent storage. It occupies little space, can be reused, and provides precise positioning for the pile foundation reinforcement cage, improving construction quality and reducing subsequent maintenance costs.

[0036] The embodiments of the present invention disclosed above are merely illustrative of the present invention. The embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific implementations described. Many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention.

Claims

1. A guiding and positioning device for a pile foundation reinforcement cage, characterized in that: It includes a square frame (1) and a guide cylindrical steel cylinder (2). The guide cylindrical steel cylinder (2) is set inside the square frame (1). Four connecting plates (3) are evenly spaced and horizontally arranged along the top edge of the guide cylindrical steel cylinder (2). One end of the connecting plate (3) is connected to the top edge of the guide cylindrical steel cylinder (2). The four connecting plates (3) are respectively attached to the top of the four sides of the square frame (1). Reinforcing steel cage fixing pipes (4) are horizontally arranged at the four corners of the top of the square frame (1). The reinforcing steel cage fixing pipes (4) move in and out towards the center of the square frame (1).

2. The pile foundation reinforcement cage guiding and positioning device according to claim 1, characterized in that: The square frame (1) is provided with steel pipe fixing plates (5) at the four corners. The steel pipe fixing plates (5) are in the shape of a door. The steel reinforcement cage fixing steel pipe (4) passes through the steel pipe fixing plates (5) and slides with the steel pipe fixing plates (5).

3. The pile foundation reinforcement cage guiding and positioning device according to claim 2, characterized in that: The square frame (1) is provided with corner bracing steel plates (6) at each of its four corners, and the steel pipe fixing steel plate (5) is set on the corner bracing steel plate (6).

4. The pile foundation reinforcement cage guiding and positioning device according to claim 3, characterized in that: The two ends of the steel pipe fixing plate (5) are connected to the corner brace plate (6) through the first rib plate (7).

5. The pile foundation reinforcement cage guiding and positioning device according to claim 4, characterized in that: The outer end of the steel pipe (4) fixing the steel cage is provided with a limiting rod (8), and the limiting rod (8) is in contact with the outer side of the steel plate (5) fixing the steel pipe.

6. The pile foundation reinforcement cage guiding and positioning device according to claim 5, characterized in that: The square frame (1) has a connecting plate fixing plate (9) on the top of its four sides that cooperates with the connecting plate (3). The connecting plate fixing plate (9) is located above the connecting plate (3) and is connected to the square frame (1) by bolts.

7. A pile foundation reinforcement cage guiding and positioning device according to claim 6, characterized in that: The connecting plate fixing plate (9) is provided with fastening bolts (10), the bottom end of which penetrates the connecting plate fixing plate (9) and contacts and engages with the connecting plate (3).

8. The pile foundation reinforcement cage guiding and positioning device according to claim 7, characterized in that: A second rib (11) is provided between the bottom of the connecting plate (3) and the outer wall of the guide cylindrical steel cylinder (2).

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