A precast beam-slab structure for bridge construction in mountainous areas

Abstract

This utility model discloses a precast beam-slab structure for bridge construction in mountainous areas, relating to the field of precast slab technology. It includes a precast slab panel with a support mechanism at its lower end. The support mechanism includes a trapezoidal frame fixedly connected to the center of the lower end of the precast slab panel. A first spiral groove is formed on the left side plate of the trapezoidal frame. By setting up the support mechanism, secondary connection and support can be provided between two adjacent precast slabs, ensuring the stability of the precast slab during use and greatly improving its load-bearing capacity. Simultaneously, the support mechanism also provides excellent positioning, ensuring perfect alignment between two adjacent precast slabs, facilitating construction. Furthermore, by setting up a movable embedding mechanism, it is convenient to connect two precast slabs while simultaneously mixing the concrete poured at the connection point, ensuring the concrete fully fills the connection and preventing voids that could affect the use of the precast slab.

Description

Technical Field

[0001] This utility model relates to the field of precast slab technology, and in particular to a precast beam-slab structure for bridge construction in mountainous areas. Background Technology

[0002] Currently, precast bridge slabs are produced and processed in prefabrication yards and then transported to construction sites for installation. Because they are not affected by the complex environment of the construction site during the forming process, precast bridge slabs are becoming increasingly popular among construction companies.

[0003] During installation, existing precast bridge slabs are usually spliced ​​and fixed together to form a complete slab. In actual use, the single splicing connection method reduces the load-bearing capacity of the precast beam slab, and will be subject to wear or damage during long-term use, which is very inconvenient.

[0004] Therefore, those skilled in the art have provided a precast beam-slab structure for bridge construction in mountainous areas to solve the problems mentioned in the background art. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a precast beam-slab structure for bridge construction in mountainous areas, solving the problems mentioned in the background section.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a precast beam-slab structure for bridge construction in mountainous areas, comprising a precast slab panel, a support mechanism provided at the lower end of the precast slab panel, the support mechanism comprising a trapezoidal frame fixedly connected to the center of the lower end of the precast slab panel, a first spiral groove provided on the left side plate of the trapezoidal frame, a first connecting column spirally connected to the first spiral groove, a second spiral groove provided on the right side plate of the trapezoidal frame, a second connecting column spirally connected to the second spiral groove, a threaded groove provided on the first connecting column, and a threaded column fixedly connected to one end of the second connecting column, the threaded column being threadedly connected to the threaded groove.

[0007] As a further technical solution of this utility model, the first connecting column and the second connecting column are provided in three sets, which are arranged in an array on the trapezoidal frame. When in use, the first connecting column and the second connecting column will move outward of the trapezoidal frame.

[0008] As a further technical solution of this utility model, the frictional force between the first connecting post and the first spiral groove is much greater than the frictional force between the threaded post and the threaded groove. When the first connecting post and the second connecting post are connected, the threaded post will be inserted into the inside of the threaded groove.

[0009] As a further technical solution of this utility model, the precast panel is provided with an embedding mechanism, the embedding mechanism includes an embedding plate provided on the side wall of the precast panel, and an embedding opening is provided on the opposite side wall of the precast panel. The embedding plate can be inserted into the interior of the embedding opening, the volume of the embedding plate is smaller than the internal space of the embedding opening, and the embedding plate can move inside the embedding opening.

[0010] As a further technical solution of this utility model, the embedding mechanism also includes a movable groove at the upper end of the precast panel, a movable block is slidably connected inside the movable groove, and the movable block and the embedding panel are fixedly connected by an L-shaped plate.

[0011] As a further technical solution of this utility model, the embedded plate and the embedded opening are provided in three sets, and the upper end of the precast panel is provided with a pouring opening, which is connected to the embedded opening.

[0012] As a further technical solution of this utility model, the connection direction of the embedded plate and the embedded port is consistent with the connection direction of the first connecting post and the second connecting post, which can ensure the stability of the connection in the same direction.

[0013] This utility model provides a precast beam-slab structure for bridge construction in mountainous areas, which has the following advantages compared with the prior art:

[0014] By setting up a support mechanism, secondary connection support can be provided between two adjacent precast slabs, ensuring the stability of the precast slabs during use and greatly improving their load-bearing capacity. At the same time, the support mechanism also plays a good positioning role, ensuring that the two adjacent precast slabs can be perfectly aligned, which facilitates construction work. Secondly, by setting up a movable embedding mechanism, it is easy to connect two precast slabs while mixing the concrete poured at the connection point, so that the concrete fully fills the connection point and avoids phenomena such as hollow concrete that affect the use of the precast slabs. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of a precast beam-slab structure used for bridge construction in mountainous areas.

[0016] Figure 2 for Figure 1 A rear-view three-dimensional exploded structure diagram;

[0017] Figure 3 for Figure 2 A schematic diagram of the three-dimensional structure viewed from below;

[0018] Figure 4 for Figure 3 A schematic diagram of the left-side stereoscopic structure;

[0019] Figure 5 for Figure 2 A three-dimensional structural diagram of the embedded plate.

[0020] In the figure: 1. Precast panel; 2. Trapezoidal frame; 3. First spiral groove; 4. First connecting column; 5. Second connecting column; 6. Second spiral groove; 7. Threaded column; 8. Threaded groove; 9. Embedded plate; 10. Embedded opening; 11. Pouring opening; 12. Moving groove; 13. Moving block; 14. L-shaped plate. Detailed Implementation

[0021] 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. 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 protection scope of the present utility model.

[0022] Please see Figure 1-5 This utility model provides a precast beam-slab structure technical solution for bridge construction in mountainous areas: it includes a precast slab panel 1, and a support mechanism is provided at the lower end of the precast slab panel 1. The support mechanism includes a trapezoidal frame 2 fixedly connected to the center of the lower end of the precast slab panel 1. A first spiral groove 3 is opened on the left side plate of the trapezoidal frame 2, and a first connecting column 4 is spirally connected to the first spiral groove 3. A second spiral groove 6 is opened on the right side plate of the trapezoidal frame 2, and a second connecting column 5 is spirally connected to the second spiral groove 6. A threaded groove 8 is opened on the first connecting column 4, and a threaded column 7 is fixedly connected to one end of the second connecting column 5. The threaded column 7 can be threadedly connected to the threaded groove 8. The trapezoidal frame 2 can support the precast slab panel 1, and the first connecting column 4 and the second connecting column 5 are connected through the threaded column 7 and the threaded groove 8 to realize the connection of the two precast slab panels 1, so as to improve the stability of the overall larger panel.

[0023] There are three sets of first connecting columns 4 and second connecting columns 5, which are arranged in an array on the trapezoidal frame 2. When in use, the first connecting columns 4 and second connecting columns 5 will move outward of the trapezoidal frame 2. By setting multiple sets of first connecting columns 4 and second connecting columns 5, the support effect on the precast slab 1 is improved.

[0024] The friction between the first connecting post 4 and the first spiral groove 3 is much greater than the friction between the threaded post 7 and the threaded groove 8. When the first connecting post 4 and the second connecting post 5 are connected, the threaded post 7 will be inserted into the inside of the threaded groove 8. When the first connecting post 4 is stationary based on the first spiral groove 3, the threaded post 7 will rotate based on the threaded groove 8 and move into the inside of the threaded groove 8, instead of pushing the first connecting post 4 to move, which facilitates the connection.

[0025] An embedding mechanism is provided on the precast panel 1. The embedding mechanism includes an embedding plate 9 provided on the side wall of the precast panel 1. An embedding opening 10 is provided on the opposite side wall of the precast panel 1. The embedding plate 9 can be inserted into the interior of the embedding opening 10. The volume of the embedding plate 9 is smaller than the internal space of the embedding opening 10. The embedding plate 9 can move inside the embedding opening 10.

[0026] The embedding mechanism also includes a movable groove 12 on the upper end of the precast panel 1. A movable block 13 is slidably connected inside the movable groove 12. The movable block 13 and the embedding plate 9 are fixedly connected by an L-shaped plate 14. The movable block 13 can move based on the movable groove 12. When the movable block 13 moves, it can drive the embedding plate 9 to move through the L-shaped plate 14. When the embedding plate 9 moves, it can stir the concrete inside the embedding opening 10, so that the concrete is fully filled inside the embedding opening 10.

[0027] There are three sets of embedded plates 9 and embedded openings 10. The upper end of the precast panel 1 is provided with a pouring opening 11, which is connected to the embedded opening 10. By inserting multiple sets of embedded plates 9 into the corresponding embedded openings 10, the connection limit of the two precast panel 1s is ensured, and the stability between the precast panel 1s is improved by pouring concrete.

[0028] The connection direction of the embedded plate 9 and the embedded opening 10 is consistent with the connection direction of the first connecting post 4 and the second connecting post 5, which can ensure the stability of the connection in the same direction. When the embedded plate 9 is fully inserted into the embedded opening 10, the first connecting post 4 and the second connecting post 5 are moved to the outermost part of the trapezoidal frame 2. At this time, the first connecting post 4 and the second connecting post 5 are in contact, and the threaded post 7 can be fully inserted into the threaded groove 8.

[0029] The working principle of this utility model is as follows: When it is necessary to splice two precast panel 1s, the embedded plate 9 on one precast panel 1 can first be inserted into the embedded opening 10 on the other precast panel 1. Then, the first connecting post 4 is rotated based on the first spiral groove 3 until it moves to the outermost part of the trapezoidal frame 2. Subsequently, the second connecting post 5 is rotated based on the second spiral groove 6. As the second connecting post 5 moves outward, the threaded post 7 will be inserted into the threaded groove 8. Continue to rotate the second connecting post 5 until the threaded post 7 is completely moved into the threaded groove 8. At this point, the splicing of the two precast panel 1s is complete. The connection between the precast panels is fixed and limited. This connection device is used in conjunction with the trapezoidal frame 2 to provide good support and fixation for the precast panel 1, thereby improving the stability of the precast panel 1. Finally, concrete is injected into the interior of the embedding opening 10 through the pouring port 11. During the pouring process, the moving block 13 moves along the moving groove 12. When the moving block 13 moves, it can drive the embedding plate 9 to move through the L-shaped plate 14. As the embedding plate 9 moves inside the embedding opening 10, the concrete injected into the embedding opening 10 can be stirred, so that the concrete can quickly and fully fill the entire embedding opening 10, avoiding the occurrence of hollow concrete and other phenomena that affect the stability of the connection between the precast panel 1.

[0030] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model are implemented according to conventional methods in the art, unless otherwise specified or limited.

Claims

1. A precast beam slab structure for mountain bridge construction, comprising a precast deck slab (1), characterized in that: A support mechanism is provided at the lower end of the precast panel (1). The support mechanism includes a trapezoidal frame (2) fixedly connected to the center of the lower end of the precast panel (1). A first spiral groove (3) is provided on the left side plate of the trapezoidal frame (2). A first connecting post (4) is spirally connected to the first spiral groove (3). A second spiral groove (6) is provided on the right side plate of the trapezoidal frame (2). A second connecting post (5) is spirally connected to the second spiral groove (6). A threaded groove (8) is provided on the first connecting post (4). A threaded post (7) is fixedly connected to one end of the second connecting post (5). The threaded post (7) can be threadedly connected to the threaded groove (8).

2. The precast beam-slab structure for bridge construction in mountainous areas according to claim 1, characterized in that, The first connecting column (4) and the second connecting column (5) are arranged in three sets and distributed in an array on the trapezoidal frame (2). When in use, the first connecting column (4) and the second connecting column (5) will move to the outside of the trapezoidal frame (2).

3. The precast beam slab structure for mountain bridge construction according to claim 2, wherein The friction between the first connecting post (4) and the first spiral groove (3) is much greater than the friction between the threaded post (7) and the threaded groove (8). When the first connecting post (4) and the second connecting post (5) are connected, the threaded post (7) will be inserted into the inside of the threaded groove (8).

4. The precast beam slab structure for mountain bridge construction according to claim 1, wherein An embedding mechanism is provided on the precast panel (1). The embedding mechanism includes an embedding plate (9) provided on the side wall of the precast panel (1). An embedding opening (10) is provided on the opposite side wall of the precast panel (1). The embedding plate (9) can be inserted into the interior of the embedding opening (10). The volume of the embedding plate (9) is smaller than the internal space of the embedding opening (10). The embedding plate (9) can move inside the embedding opening (10).

5. The precast beam slab structure for mountain bridge construction according to claim 4, wherein The embedding mechanism also includes a movable groove (12) on the upper end of the precast panel (1), and a movable block (13) is slidably connected inside the movable groove (12). The movable block (13) and the embedding plate (9) are fixedly connected by an L-shaped plate (14).

6. The precast beam slab structure for mountain bridge construction according to claim 5, wherein The embedded plate (9) and the embedded opening (10) are provided in three sets. The upper end of the precast panel (1) is provided with a pouring opening (11), and the pouring opening (11) is connected to the embedded opening (10).

7. The precast beam slab structure for mountain bridge construction according to claim 4, wherein The connection direction of the embedded plate (9) and the embedded port (10) is consistent with the connection direction of the first connecting post (4) and the second connecting post (5), which can ensure the stability of the connection in the same direction.

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