A pre-embedded comb plate expansion joint

Abstract

The utility model discloses a pre -buried formula comb tooth board expansion joint relates to comb tooth board expansion joint technical field, including two bridge sections, all inlay in bridge section on, and leave the deformation space between two bridge sections, all be provided with pre -buried groove on two bridge sections. The utility model discloses the design structure is reasonable, it can effectively shield the flying stone, chippings and other sundries that fall from comb tooth board expansion joint deformation space, avoid these sundries to fall to the below bridge to cause the security hidden danger to the passing vehicle, the safety protection performance of bridge whole has been improved significantly, still through setting up elastic component, when bridge produces expansion deformation because of temperature change or vehicle load, and elastic piece can extrude or stretch through self deformation, the expansion movement of bridge section plays good buffering effect, reduces the damage of rigid impact to structure.

Description

Technical Field

[0001] This utility model relates to the field of comb plate expansion joint technology, specifically a pre-embedded comb plate expansion joint. Background Technology

[0002] Toothed expansion joints are structural joints widely used in road engineering such as bridges and highways. Their unique toothed design makes the expansion joints more adaptable and durable when subjected to vehicle loads and temperature changes. In the expansion joint, the toothed plates interlock with each other through a series of tooth-like structures, so that the expansion joint can produce a certain amount of expansion and deformation when subjected to vehicle loads and temperature changes.

[0003] Chinese patent CN212426732U discloses a new type of pre-embedded comb-tooth plate expansion joint, which can be constructed after the bridge deck pavement is completed, making full use of the construction period and shortening the construction time. This utility model pre-positions the positioning plate according to the design elevation and pours concrete, eliminating the filling process and reducing the generation of construction waste.

[0004] While the above-mentioned solutions facilitate convenient installation of the comb-plate expansion joints, the space between the expansion joints is exposed after installation. When vehicles drive over the expansion joints, flying stones and debris can pass through this space and fall below the bridge, posing a safety hazard to vehicles passing underneath. Therefore, we provide a pre-embedded comb-plate expansion joint solution to address these issues. Utility Model Content

[0005] 1) Technical problems to be solved

[0006] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a pre-embedded comb plate expansion joint.

[0007] (ii) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a pre-embedded comb-tooth plate expansion joint, comprising:

[0009] Two bridge segments are embedded in the bridge segment, and a deformation space is left between the two bridge segments. Pre-embedded grooves are opened on both bridge segments, and comb tooth mother plate and comb tooth daughter plate are respectively installed in the two pre-embedded grooves. Connecting components for connecting the bridge are provided on both bridge segments.

[0010] The elastic component, located between two bridge sections, is used to buffer the expansion and contraction deformation of the bridge sections.

[0011] The protective component includes a first shield, which has storage slots on both sides. A second shield is slidably connected to each of the two storage slots, and the second shield can be detachably installed on the bridge section.

[0012] Furthermore, the connecting component includes a reinforcing block fixedly connected to the bridge section, and one side of the reinforcing block is fixedly connected with reinforcing ribs arranged at equal intervals.

[0013] Furthermore, the elastic component includes an elastic element, which is U-shaped, and its two ends are detachably installed on two bridge sections respectively.

[0014] Furthermore, a fixing plate is fixedly connected to the bridge section, and a connecting bolt is installed on the fixing plate. One end of the connecting bolt passes through an elastic element and is threaded with a fixing nut.

[0015] Furthermore, a guide block is fixedly connected to the inner bottom wall of the storage slot, and a guide groove matching the guide block is provided on the second shielding plate.

[0016] Furthermore, a connecting plate is fixedly connected to the second shielding plate, and a locking bolt is installed on the connecting plate. The connecting plate is installed on the side wall of the bridge section by the locking bolt.

[0017] (iii) Beneficial effects:

[0018] Compared with existing technologies, this pre-embedded comb-tooth plate expansion joint has the following advantages:

[0019] I. This utility model, by setting up a protective component consisting of a first shielding plate and a second shielding plate, can effectively shield flying stones, debris, and other debris falling from the expansion joint deformation space of the comb plate, preventing these debris from falling under the bridge and causing safety hazards to passing vehicles, thus significantly improving the overall safety protection performance of the bridge. Furthermore, by setting up an elastic component, when the bridge expands or contracts due to temperature changes or vehicle loads, the elastic component can compress or stretch through its own deformation, providing a good buffering effect on the expansion and contraction of the bridge section and reducing damage to the structure from hard impacts. At the same time, the second shielding plate in the protective component can slide within the receiving groove of the first shielding plate, adjusting synchronously with the expansion and contraction of the bridge section without affecting the normal deformation function of the expansion joint.

[0020] Second, this utility model completes the connection between the reinforcing block and the reinforcing rib and the bridge concrete through the connecting components, which can effectively improve the stability of the connection between the bridge section and the main body of the bridge, and ensure that the expansion joint of the comb plate is not easy to loosen during long-term use. The elastic element can be detached and installed through the fixing plate, connecting bolts and fixing nuts. The second shielding plate is connected to the bridge section through the connecting plate and locking bolts, which not only facilitates quick assembly during construction, but also allows for individual replacement when the components are worn out later, reducing maintenance costs and difficulties. Attached Figure Description

[0021] Figure 1 The three-dimensional representation of this utility model Figure 1 ;

[0022] Figure 2 The three-dimensional representation of this utility model Figure 2 ;

[0023] Figure 3 This is a cross-sectional view of the present invention.

[0024] In the diagram: 1. Bridge section; 2. Comb tooth mother plate; 3. Comb tooth daughter plate; 4. Elastic element; 5. Fixing plate; 6. Connecting bolt; 7. Fixing nut; 8. Reinforcing block; 9. Reinforcing rib; 10. First shielding plate; 11. Storage groove; 12. Second shielding plate; 13. Connecting plate; 14. Locking bolt; 15. Guide block; 16. Guide groove; 17. Embedded groove. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figure 1-3 As shown, this utility model provides a technical solution: a pre-embedded comb-tooth plate expansion joint, including two bridge sections 1, an elastic component and a protective component.

[0027] Both bridge segments 1 are embedded in the bridge segment, and a deformation space is left between the two bridge segments 1. Both bridge segments 1 are provided with pre-embedded grooves 17, and comb tooth mother plate 2 and comb tooth daughter plate 3 are respectively installed in the two pre-embedded grooves 17. The comb tooth mother plate 2 and the comb tooth daughter plate 3 are matched, and the insertion end of the comb tooth mother plate 2 and the comb tooth daughter plate 3 is located above the deformation space. The comb tooth mother plate 2 and the comb tooth daughter plate 3 are flush with the bridge segment 1. Both bridge segments 1 are provided with connecting components for connecting the bridge.

[0028] The connecting component includes a reinforcing block 8 fixedly connected to the bridge section 1. One side of the reinforcing block 8 is fixedly connected with reinforcing ribs 9 arranged at equal intervals. The reinforcing block 8 fixes the bridge section 1 by pre-embedding the reinforcing ribs 9 into the concrete of the bridge.

[0029] The elastic component is disposed between the two bridge segments 1 to buffer the expansion and contraction deformation of the bridge segments 1. The elastic component includes an elastic element 4, which is U-shaped. Both ends of the elastic element 4 are detachably installed on the two bridge segments 1. When the two bridge segments 1 move relative to each other, the two straight edges of the elastic element 4 will be squeezed or stretched.

[0030] A fixing plate 5 is fixedly connected to the bridge section 1. A connecting bolt 6 is installed on the fixing plate 5. One end of the connecting bolt 6 passes through the elastic element 4 and is threaded with a fixing nut 7. The elastic element 4 can be installed using the fixing plate 5, the connecting bolt 6 and the fixing nut 7.

[0031] The protective component includes a first shield 10, with storage slots 11 on both sides of the first shield 10. A second shield 12 is slidably connected in each of the two storage slots 11, and the second shield 12 can be detachably installed on the bridge section 1.

[0032] The first shielding plate 10 and the second shielding plate 12 are used to block the stones falling from the deformation space and prevent the stones from falling below the bridge section 1.

[0033] A guide block 15 is fixedly connected to the inner bottom wall of the storage slot 11, and a guide groove 16 matching the guide block 15 is provided on the second baffle plate 12. The stability of the second baffle plate 12 sliding in the storage slot 11 is improved by the guide block 15 and the guide groove 16.

[0034] A connecting plate 13 is fixedly connected to the second shielding plate 12. A locking bolt 14 is installed on the connecting plate 13, and the connecting plate 13 is installed on the side wall of the bridge section 1 by means of the locking bolt 14. The second shielding plate 12 is installed by means of the connecting plate 13 and the locking bolt 14, and both the locking bolt 14 and the connecting plate 13 are located below the second shielding plate 12.

[0035] It should be noted that in this document, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely 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, they should not be construed as limitations on this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "fixed," "installed," "connected," and "linked" should be interpreted broadly. For example, "installed" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a mechanical connection or an electrical connection; "linked" can be a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pre-embedded comb-tooth plate expansion joint, characterized in that, include: Two bridge segments (1) are embedded in the bridge segment, and a deformation space is left between the two bridge segments (1). Both bridge segments (1) are provided with pre-embedded grooves (17), and comb tooth mother plate (2) and comb tooth daughter plate (3) are installed in the two pre-embedded grooves (17) respectively. Both bridge segments (1) are provided with connecting components for connecting the bridge. An elastic component is provided between two bridge segments (1) to buffer the expansion and contraction deformation of the bridge segments (1); The protective component includes a first shield (10), which has storage slots (11) on both sides. A second shield (12) is slidably connected in each of the two storage slots (11), and the second shield (12) can be detachably installed on the bridge section (1).

2. The pre-embedded comb-tooth plate expansion joint according to claim 1, characterized in that: The connecting assembly includes a reinforcing block (8) fixedly connected to the bridge section (1), and one side of the reinforcing block (8) is fixedly connected with reinforcing ribs (9) arranged at equal intervals.

3. The pre-embedded expansion joint of the comb plate according to claim 1, characterized in that: The elastic component includes an elastic element (4), which is U-shaped, and both ends of the elastic element (4) are detachably installed on two bridge sections (1).

4. The pre-embedded comb-tooth plate expansion joint according to claim 3, characterized in that: A fixing plate (5) is fixedly connected to the bridge section (1), and a connecting bolt (6) is installed on the fixing plate (5). One end of the connecting bolt (6) passes through the elastic element (4) and is threadedly connected to a fixing nut (7).

5. The pre-embedded comb-tooth plate expansion joint according to claim 1, characterized in that: The inner bottom wall of the storage slot (11) is fixedly connected to a guide block (15), and the second baffle plate (12) is provided with a guide groove (16) that matches the guide block (15).

6. The pre-embedded comb-tooth plate expansion joint according to claim 1, characterized in that: A connecting plate (13) is fixedly connected to the second shielding plate (12), and a locking bolt (14) is installed on the connecting plate (13). The connecting plate (13) is installed on the side wall of the bridge section (1) by the locking bolt (14).

Images