Bridge expansion joint structure

Abstract

The utility model relates to the technical field of road and bridge equipment, and particularly discloses a bridge expansion joint structure, which comprises permanent protection structures, a plurality of expansion joint structures and a plurality of expansion joint connecting structures, and is characterized in that the permanent protection structures are pre-poured in concrete structures of bridge bodies on two sides of an expansion joint; the supporting assembly is arranged at the opening position of the expansion joint through a permanent protection structure and comprises bearing steel, waterproof rubber strips and top steel. According to the bridge expansion joint structure, when the waterproof rubber strip in the expansion joint needs to be replaced, the temporary protection assembly is arranged, so that the upper side of the waterproof rubber strip is conveniently protected by using a temporary protection rubber strip, and the problem that foreign matter falls to the bottom of the bridge and hurts personnel under the bridge is solved. Through the arrangement of the anti-falling reinforcing steel plates, the anti-falling stirrups, the bearing steel and the waterproof rubber strips, a detachable and assembled bridge expansion joint structure is formed, and field assembly and installation are facilitated when the bridge expansion joint is used. The problem that a waterproof adhesive tape is inconvenient to replace when the adhesive tape of a traditional expansion joint structure is aged or damaged is solved.

Description

Technical Field

[0001] This utility model belongs to the field of road and bridge engineering technology, specifically, it relates to a bridge expansion joint structure. Background Technology

[0002] Bridge expansion joints are joints installed between the ends of two beams, between a beam end and an abutment, or at hinged joints of the bridge to accommodate bridge deck deformation. Changes in ambient temperature cause bridge materials to contract or expand, potentially leading to gaps or damage to the bridge structure. Therefore, expansion joints are typically provided in bridges to prevent structural damage due to temperature variations. However, in humid environments, moisture can easily seep into the bridge's interior through these expansion joints, causing weld cracking and corrosion of the internal steel reinforcement.

[0003] Currently, the most commonly used type of expansion joint on bridges is the butt joint type. This type utilizes steel components of different shapes, embedding different types of rubber strips. The rubber strips deform under tension and compression. However, both ends of these rubber strips are embedded in the steel components on either side. After prolonged use, when the rubber strips age or become damaged, they need to be dug out for replacement, which is very time-consuming. Furthermore, during construction, if the waterproof rubber strips are damaged, construction debris, dirt, and even particles can fall onto the damaged strips, potentially causing accidents. Therefore, a temporary protective rubber strip is needed during expansion joint maintenance to provide this protection.

[0004] Based on this, the present invention provides a bridge expansion joint structure to solve the problems existing in the prior art. Utility Model Content

[0005] In view of this, the main purpose of this utility model is to provide a bridge expansion joint structure to solve the problem that the waterproof rubber strip is inconvenient to replace when the rubber strip of the traditional expansion joint structure ages or is damaged.

[0006] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0007] A bridge expansion joint structure, installed between two adjacent bridge sections, includes:

[0008] A permanent protective structure, pre-cast within the concrete structure of the bridge body on both sides of the expansion joint;

[0009] The support assembly, which is installed at the opening of the expansion joint through a permanent protective structure, includes a supporting steel, a waterproof strip, and a top steel. The supporting steel is installed on the extension platform of the anti-detachment reinforcement steel plate, the top steel is detachably installed on the supporting steel, and the waterproof strip is installed between the supporting steel and the top steel.

[0010] In a preferred embodiment, the permanent protective structure includes anti-detachment reinforcing steel plates, which are pre-embedded in the bridge body by anti-detachment stirrups and extend to the outside of the side where the expansion joint is located.

[0011] In a preferred embodiment, the waterproof strip spans across the opening of the expansion joint.

[0012] In a preferred embodiment, the supporting steel has bolt holes, the top steel has enlarged holes and threaded holes on its upper part, and a locking bolt is inserted into the threaded hole, the locking bolt being threadedly connected to the bolt hole.

[0013] In a preferred embodiment, the supporting steel is provided with a positioning plate that matches a positioning slot formed on the top steel.

[0014] In a preferred embodiment, the contact surfaces of the supporting steel and the top steel are both irregularly shaped, and after the supporting steel and the top steel are connected, an irregularly shaped locking groove is formed on the connection surface to match the waterproof strip.

[0015] In a preferred embodiment, the support assembly further includes a protective steel plate, which is positioned between two adjacent top steel sections on both sides of the expansion joint by positioning bolts.

[0016] In a preferred embodiment, a groove is also provided on one side of the protective steel plate, and the groove matches the positioning bolt.

[0017] In a preferred embodiment, the bridge expansion joint structure further includes a temporary protective component, which includes a temporary protective strip disposed between two top steel members on both sides of the expansion joint and matching a groove formed on the top steel member.

[0018] In a preferred embodiment, the upper part of the inner cavity of the slot is provided with an arc-shaped protrusion that matches the groove on the end of the temporary protective strip.

[0019] Compared with the prior art, this utility model provides a bridge expansion joint structure, which has the following beneficial effects:

[0020] 1. This expansion joint structure, through the setting of temporary protective components, facilitates the use of temporary protective strips to protect the upper side of the waterproof strips when replacing them, thus preventing foreign objects from falling to the bottom of the bridge and causing injury to people below.

[0021] 2. This expansion joint structure, through the installation of anti-detachment reinforcing steel plates, anti-detachment stirrups, supporting steel, and waterproof sealing strips, forms a detachable and assembleable bridge expansion joint structure. This facilitates on-site assembly and installation, and is simple and convenient to use and adjust. Furthermore, it allows for easy disassembly and replacement of the waterproof sealing strips. This solves the problem of inconvenient replacement of waterproof sealing strips when they age or become damaged, a problem inherent in traditional expansion joint structures. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 A top-view structural diagram of the bridge expansion joint of this utility model after installation;

[0024] Figure 2 This is a structural schematic diagram of the bridge expansion joint after installation, viewed from the main perspective.

[0025] Figure 3 This is a schematic diagram of the structure of the temporary protective adhesive strip after installation.

[0026] Figure 4 This is a schematic diagram showing the distribution of bolt holes in this utility model.

[0027] Figure 5 This is a schematic diagram showing the distribution of the locking bolts in this utility model.

[0028] [Explanation of Key Component Symbols]

[0029] 1. Bridge body; 2. Anti-detachment reinforcing steel plate; 3. Anti-detachment stirrups; 4. Supporting steel; 5. Waterproof sealing strip; 6. Locking bolt; 7. Enlarged hole; 8. Slot; 9. Top steel; 10. Temporary protective sealing strip; 11. Bolt hole; 12. Protective steel plate; 13. Positioning bolt; 14. Slide groove; 15. Positioning insert plate; 16. Positioning slot. Detailed Implementation

[0030] The structure of the bridge expansion joint will be further described in detail below with reference to the accompanying drawings and embodiments of the present invention.

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments as described in this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0033] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0034] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 9 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0035] As per the instruction manual Figures 1-5 As shown, this utility model provides a technical solution:

[0036] A bridge expansion joint structure is installed between two adjacent bridge bodies 1 to protect the expansion joint. It includes a permanent protective structure, a splicable support component, and a temporary protective component. The permanent protective structure is pre-cast into the concrete structure of the bridge bodies 1 on both sides of the expansion joint. The support component is set at the opening of the expansion joint through the permanent protective structure to protect the bridge expansion joint. The temporary protective component is set on the support component to support the support component when the waterproof sealing strip 5 is replaced, thus facilitating the replacement of the waterproof sealing strip 5.

[0037] In the above description, during the construction of bridge body 1, the permanent protective structure can be pre-cast on the side wall of bridge body 1. Then, after the bridge body 1 is installed, support components are installed on the permanent protective structure to protect the expansion joints of bridge body 1. In addition, it is convenient to use temporary protective components to support the support components during use, and it is convenient to replace the waterproof strip 5.

[0038] In a preferred embodiment, such as Figure 1 , Figure 2 and Figure 3 As shown, the permanent protective structure includes an anti-detachment reinforcing steel plate 2, which is pre-embedded in the bridge body 1 by anti-detachment stirrups 3 and extends to the outer side of the expansion joint. The anti-detachment stirrups 3 are welded to the anti-detachment reinforcing steel plate 2 and are pre-embedded in the bridge body 1.

[0039] In the above description, the installation and fixing of the supporting steel plate 2 facilitates the assembly of the supporting steel plate 4. The installation of the anti-detachment stirrups 3 enhances the connection stability between the anti-detachment reinforcing steel plate 2 and the concrete body of the bridge 1.

[0040] In a preferred embodiment, such as Figure 1 , Figure 2 and Figure 3 As shown, the support assembly includes a supporting steel 4, a waterproof strip 5, and a top steel 9. The supporting steel 4 is fixedly installed on the extended support platform of the anti-detachment reinforcing steel plate 2. The top steel 9 is detachably installed on the supporting steel 4 and is flush with the opening of the expansion joint to protect the expansion joint. The waterproof strip 5 is placed between the supporting steel 4 and the top steel 9 and spans across the opening of the expansion joint to provide waterproofing and seepage prevention, thus protecting the expansion joint.

[0041] In the above description, the detachable connection between the supporting steel 4 and the top steel 9 facilitates the replacement of the waterproof strip 5 when it is damaged during use, thus ensuring the replacement efficiency of the waterproof strip 5 while guaranteeing the protection of the expansion joint.

[0042] Specifically, such as Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the supporting steel 4 has bolt holes 11, and the top steel 9 has an enlarged hole 7 and a threaded hole on its upper part. A locking bolt 6 is inserted into the threaded hole, and the locking bolt 6 is threadedly connected to the bolt hole 11. When it is necessary to replace the waterproof sealing strip 5, the locking bolt 6 on the top steel 9 is removed, and then the top steel 9 is removed from the supporting steel 4. The new waterproof sealing strip 5 can then be directly removed and replaced. The operation process is simple and convenient.

[0043] Specifically, such as Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the contact surface between the supporting steel 4 and the top steel 9 is an irregularly shaped surface, and a positioning plate 15 is provided on the supporting steel 4 to cooperate with the positioning slot 16 opened on the top steel 9. This makes it easy for the supporting steel 4 and the top steel 9 to form a whole after installation, so as to achieve the lateral anti-detachment effect and prevent the top steel 9 from shifting under external force, which would affect the protection quality of the expansion joint.

[0044] Specifically, such as Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the contact surfaces of the supporting steel 4 and the top steel 9 are both irregularly shaped, and after the supporting steel 4 and the top steel 9 are connected, an irregularly shaped locking groove is formed on the connection surface to cooperate with the waterproof strip 5.

[0045] In a preferred embodiment, such as Figure 1 , Figure 2 and Figure 3 As shown, the support assembly also includes a protective steel plate 12. The protective steel plate 12 is installed between two adjacent top steels 9 on both sides of the expansion joint by a positioning bolt 13, which serves to seal the expansion joint. In order to match the deformation of the expansion joint, a sliding groove 14 is also provided on one side of the protective steel plate to cooperate with the positioning bolt 13, so as to facilitate the clearance function to match the deformation of the expansion joint.

[0046] In the above description, the protective steel plate 12 is used to protect the opening of the expansion joint and also to protect the waterproof strip 5.

[0047] In a preferred embodiment, such as Figure 3 , Figure 4 and Figure 5As shown, the temporary protective component includes a temporary protective strip 10. The temporary protective strip 10 is used to be placed between the two top steels 9 on both sides of the expansion joint when replacing the waterproof strip, and it matches the slot 8 opened on the top steel 9. The temporary protective strip 10 is used to prevent foreign objects from falling to the bottom of the bridge and causing injury to people under the bridge, and facilitates the replacement of the waterproof strip 5.

[0048] Specifically, such as Figure 3 , Figure 4 and Figure 5 As shown, the upper part of the inner cavity of the slot 8 is pre-set with an arc protrusion, which facilitates the fitting and anti-detachment effect with the groove on the end of the temporary protective strip 10.

[0049] The implementation principle of the bridge expansion joint structure described in this utility model is as follows:

[0050] When it is necessary to replace the waterproof sealant strip 5 inside the expansion joint, firstly, for safety reasons, the two sides of the temporary protective sealant strip 10 are inserted into the slots 8 opened on the side walls of the two top steel bars 9. This provides protection for the damaged waterproof sealant strip 5, preventing foreign objects from falling to the bottom of the bridge and causing injury to people below. Then, the locking bolts 6 on the top steel bar 9 are removed, and the top steel bar 9 is taken off from the supporting steel bar 4. The new waterproof sealant strip 5 can then be directly removed and replaced, which is very convenient. Moreover, the overall structure is easy to assemble and install, effectively improving construction efficiency.

[0051] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model.

Claims

1. A bridge expansion joint structure, installed between two adjacent bridge bodies (1), characterized in that: include: A permanent protective structure is precast within the concrete structure of the bridge body (1) on both sides of the expansion joint; The support assembly, which is set at the opening of the expansion joint by a permanent protective structure, includes a supporting steel (4), a waterproof rubber strip (5) and a top steel (9). The supporting steel (4) is set on the extension platform of the anti-detachment reinforcement steel plate (2). The top steel (9) is detachably set on the supporting steel (4). The waterproof rubber strip (5) is set between the supporting steel (4) and the top steel (9). The permanent protective structure includes a detachment-resistant reinforcing steel plate (2), which is pre-embedded in the bridge body (1) by detachment-resistant stirrups (3) and extends to the outside of the side where the expansion joint is located.

2. The bridge expansion joint structure as described in claim 1, characterized in that: The waterproof strip (5) spans across the opening of the expansion joint.

3. A bridge expansion joint structure as described in claim 1, characterized in that: The supporting steel (4) has bolt holes (11), the top steel (9) has an enlarged hole (7) and a threaded hole on its upper part, and a locking bolt (6) is inserted into the threaded hole. The locking bolt (6) is threadedly connected to the bolt hole (11).

4. A bridge expansion joint structure as described in claim 1, characterized in that: The supporting steel (4) is provided with a positioning plate (15), which matches the positioning slot (16) opened on the top steel (9).

5. A bridge expansion joint structure as described in claim 1, characterized in that: The contact surfaces of the supporting steel (4) and the top steel (9) are both irregularly shaped, and after the supporting steel (4) and the top steel (9) are connected, an irregularly shaped locking groove is formed on the connection surface to match the waterproof strip (5).

6. A bridge expansion joint structure as described in claim 1, characterized in that: The support assembly also includes a protective steel plate (12), which is set between two adjacent top steels (9) on both sides of the expansion joint by a positioning bolt (13).

7. A bridge expansion joint structure as described in claim 6, characterized in that: A groove (14) is also provided on one side of the protective steel plate, and the groove (14) matches the positioning bolt (13).

8. A bridge expansion joint structure as described in claim 1, characterized in that: The bridge expansion joint structure also includes a temporary protective component, which includes a temporary protective strip (10). The temporary protective strip (10) is disposed between two top steels (9) on both sides of the expansion joint and matches the slot (8) opened on the top steel (9).

9. A bridge expansion joint structure as described in claim 8, characterized in that: The upper part of the inner cavity of the slot (8) is pre-set with an arc protrusion, which matches the groove on the end of the temporary protective strip (10).

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