Large-tonnage reinforcement cage positioning device

Abstract

The utility model discloses a large-tonnage reinforcement cage positioning device, relates to the technical field of reinforcement cage positioning, and is particularly suitable for large-tonnage and ultra-deep vertical shaft diaphragm wall construction scenes. In projects such as water delivery tunnels of reservoirs, due to the fact that the construction depth of a vertical shaft underground diaphragm wall is large and geological conditions are complex, accurate positioning of a reinforcement cage becomes a key problem. According to the large-tonnage reinforcement cage positioning device, the steel structure body with the V-shaped section is welded to the bottom of the reinforcement cage, the limiting groove for limiting the top face steel bars of the lower-layer reinforcement cage is formed through the V-shaped opening, the position of the upper-layer reinforcement cage after hoisting is effectively limited, the positioning precision is remarkably improved, and the deviation risk is reduced. The large-tonnage reinforcement cage positioning device has the advantages of being wide in application range, good in economical efficiency and the like, an efficient and reliable solution is provided for ultra-deep vertical shaft diaphragm wall construction, the problems that a traditional positioning method is insufficient in precision and low in efficiency are solved, and the construction quality and progress are ensured.

Description

Technical Field

[0001] This utility model relates to the field of rebar cage positioning technology, and in particular to a large-tonnage rebar cage positioning device. Background Technology

[0002] In the construction of diaphragm walls in vertical shafts, the positioning of the reinforcing cage is a crucial technical step. This is especially true in reservoir water conveyance tunnel projects, where the diaphragm walls are constructed at considerable depths and the underground geological conditions are complex, placing even higher demands on the precise positioning of the reinforcing cage. According to the construction design, the diaphragm wall reinforcing cages are constructed in sections, with each section consisting of multiple individual reinforcing cages vertically assembled.

[0003] Due to the large tonnage of the reinforcing cage and the extremely deep construction depth, its positioning during the lowering process is significantly more difficult. Especially during concrete pouring, inaccurate positioning of the reinforcing cage can easily lead to displacement. This displacement not only affects the overall quality of the diaphragm wall but may also adversely impact subsequent shaft excavation, potentially causing rework or delays in the construction schedule.

[0004] Therefore, achieving precise positioning of the reinforcing cage in the construction of diaphragm walls for large-tonnage, ultra-deep vertical shafts has become an urgent technical problem to be solved. Currently, most methods for positioning reinforcing cages rely on manual operation and simple mechanical assistance, which is insufficient to meet the high-precision positioning requirements in the construction of diaphragm walls for ultra-deep vertical shafts. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides a large-tonnage rebar cage positioning device. This device can effectively reduce disturbance to the rebar cage during concrete pouring, ensure the stability of the rebar cage during construction, improve construction efficiency, and guarantee project progress.

[0006] The technical solution adopted in this utility model is as follows:

[0007] A large-tonnage rebar cage positioning device is provided. Except for the bottommost rebar cage, several of these large-tonnage rebar cage positioning devices are installed at the bottom of each layer of rebar cage in the diaphragm wall. The large-tonnage rebar cage positioning device is welded and fixed to the bottom of each layer of rebar cage. It is a steel structure with a V-shaped cross-section. The V-shaped opening of the steel structure faces downward to form a limiting groove for limiting the rebar on the top surface of the lower layer of rebar cage.

[0008] Furthermore, several of these large-tonnage steel cage positioning devices are installed at the bottom of each layer of steel cage. The positions of these large-tonnage steel cage positioning devices can respectively limit the transverse and longitudinal steel bars on the top surface of the lower layer of steel cage.

[0009] Furthermore, several of these large-tonnage steel cage positioning devices are arranged at the intersection points of the transverse and longitudinal steel bars at the bottom of each layer of steel cage; the V-shaped opening of the large-tonnage steel cage positioning device forms a first limiting groove for limiting the top surface steel bars of the lower layer steel cage, and openings are provided on both sides of the cross-section of the steel structure, which form a second limiting groove for limiting the top surface steel bars of the lower layer steel cage through the openings.

[0010] The beneficial effects of this utility model are:

[0011] Precise positioning and reduced deviation: This large-tonnage steel cage positioning device uses a V-shaped steel structure at the bottom of each layer of steel cage to effectively limit the horizontal and vertical steel bars on the top surface of the lower layer of steel cage. This significantly improves the positioning accuracy of the steel cage, avoids deviation caused by disturbance during concrete pouring, and ensures the construction quality of the diaphragm wall.

[0012] Stable structure and easy operation: This large-tonnage rebar cage positioning device is welded and fixed to the bottom of the rebar cage, ensuring a robust and reliable structure. Its reasonable installation location, situated at the intersection of transverse and longitudinal rebars, further enhances overall stability. Furthermore, its simple design facilitates easy processing and installation, reducing construction difficulty.

[0013] Improved construction efficiency: The dual-limiting groove design, namely the first limiting groove and the second limiting groove, enables rapid and precise docking of the steel cage, reduces the time for process connection, speeds up the construction progress, and provides a guarantee for subsequent shaft excavation.

[0014] Wide applicability and good economic efficiency: This large-tonnage rebar cage positioning device is suitable for construction scenarios involving large tonnage and ultra-deep vertical shaft diaphragm walls, and can meet the high-precision positioning requirements under complex geological conditions. Its low manufacturing cost and reusability effectively save construction costs.

[0015] In summary, this utility model solves the problems of insufficient accuracy and low efficiency of traditional rebar cage positioning methods, and provides an efficient and reliable solution for the construction of diaphragm walls in ultra-deep vertical shafts. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the vertical assembly of the diaphragm wall reinforcement cage according to Embodiment 1 of this utility model;

[0017] Figure 2 This is a diagram showing the installation position of the large-tonnage steel cage positioning device at the bottom of the upper steel cage in Embodiment 1 of this utility model.

[0018] Figure 3 This is a schematic diagram of the structure of the large-tonnage steel cage positioning device in Embodiment 1 of this utility model;

[0019] Figure 4This is a diagram showing the installation position of the large-tonnage steel cage positioning device at the bottom of the upper steel cage in Embodiment 2 of this utility model.

[0020] Figure 5 This is a schematic diagram of the structure of the large-tonnage steel cage positioning device in Embodiment 2 of this utility model;

[0021] In the diagram: 1. The bottommost steel cage; 2. Positioning device for the large-tonnage steel cage; 3. Limiting groove; 4. First limiting groove; 5. Second limiting groove; 6. Plane. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model. Example 1

[0023] In response to the problem that the positioning of individual steel cages in the diaphragm wall is inaccurate during the vertical assembly of the diaphragm wall during construction, which easily leads to displacement, this embodiment provides a large-tonnage steel cage positioning device.

[0024] like Figure 1 As shown, except for the bottommost steel cage 1, each layer of the diaphragm wall reinforcement cage is equipped with several large-tonnage steel cage positioning devices 2 at its bottom. These devices allow for rapid and precise alignment and positioning of the upper-layer reinforcement cage after it is vertically and coaxially hoisted to the lower layer, reducing the time required for process connections and accelerating the construction progress. Figure 2 As shown, in this embodiment, eight large-tonnage steel cage positioning devices 2 are installed at the four corners of the bottom of the upper steel cage, and the large-tonnage steel cage positioning devices 2 are welded and fixed to the bottom of each layer of steel cage.

[0025] like Figure 3 As shown, the large-tonnage rebar cage positioning device 2 is a V-shaped steel structure. The V-shaped opening of the steel structure faces downwards to form a limiting groove 3 that limits the position of the top rebar of the lower rebar cage. The top of the steel structure is a flat plane 6, used for welding and fixing to the transverse or longitudinal rebar of the upper rebar cage. Figure 2 As shown, according to Figure 2After the eight large-tonnage steel cage positioning devices 2 are welded and fixed to the horizontal and vertical steel bars of the upper steel cage at the positions shown, when the upper steel cage is vertically and coaxially hoisted to the lower steel cage, the horizontal and vertical steel bars on the top surface of the lower steel cage can be quickly and accurately inserted into the V-shaped openings of the eight large-tonnage steel cage positioning devices 2, thereby achieving rapid and accurate docking and positioning. Example 2

[0026] Based on Example 1, this example makes the following structural improvements to reduce the number of large-tonnage steel cage positioning devices 2 used:

[0027] like Figure 4 As shown, four positioning devices 2 for this large-tonnage steel cage are arranged at the intersection points of the transverse and longitudinal steel bars at the bottom of the upper steel cage. Figure 5 As shown, in this embodiment, the V-shaped opening of the large-tonnage steel cage positioning device 2 forms a first limiting groove 4 that limits the top steel bars of the lower steel cage; in addition, openings are provided on both sides of the cross-section of the steel structure, which form a second limiting groove 5 that limits the top steel bars of the lower steel cage.

[0028] Therefore, according to Figure 4 After the four large-tonnage steel cage positioning devices 2 are welded and fixed to the upper steel cage at the positions shown, when the upper steel cage is vertically and coaxially hoisted to the lower steel cage, the intersection of the transverse and longitudinal steel bars on the top surface of the lower steel cage can be quickly and accurately inserted into the first limiting groove 4 and the second limiting groove 5 of the four large-tonnage steel cage positioning devices 2. Thus, while reducing the number of large-tonnage steel cage positioning devices 2 used, they can still be quickly and accurately docked and positioned.

[0029] It should be noted that the placement of the large-tonnage steel cage positioning device 2 in Embodiments 1 and 2 of this utility model is only an example. In actual engineering, the number of large-tonnage steel cage positioning devices 2 can be increased according to the size of a single steel cage of the diaphragm wall steel cage.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A positioning device for a large-tonnage steel cage, characterized in that: Except for the bottommost steel cage, each layer of the diaphragm wall steel cage has several large-tonnage steel cage positioning devices installed at its bottom. These large-tonnage steel cage positioning devices are welded and fixed to the bottom of each layer of steel cage. They are V-shaped steel structures with downward-facing V-shaped openings that form limiting grooves to restrict the top steel bars of the lower layer of steel cage.

2. The large-tonnage steel cage positioning device according to claim 1, characterized in that: Several large-tonnage steel cage positioning devices are installed at the bottom of each layer of steel cage. The positions of these large-tonnage steel cage positioning devices can limit the transverse and longitudinal steel bars on the top surface of the lower layer of steel cage.

3. The large-tonnage steel cage positioning device according to claim 1, characterized in that: Several of these large-tonnage steel cage positioning devices are arranged at the intersection points of the transverse and longitudinal steel bars at the bottom of each layer of steel cage; the V-shaped opening of the large-tonnage steel cage positioning device forms a first limiting groove for limiting the top surface steel bars of the lower layer steel cage, and openings are provided on both sides of the cross-section of the steel structure, which form a second limiting groove for limiting the top surface steel bars of the lower layer steel cage through the openings.

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