Centralized drainage type bridge expansion joint

Abstract

The utility model discloses a centralized drainage formula bridge expansion joint relates to bridge engineering technical field, and the expansion body is equipped with the drainage groove in the bottom, is equipped with the support plate in the both ends of drainage groove, is equipped with the strip -shaped clamping block in the support plate one end, is equipped with the cement compression block in the strip -shaped clamping block one side, is equipped with a plurality of arc convexes in the drainage groove bottom, is equipped with the set screw in the support plate top. The utility model discloses integral type structure design, improves the overall stability and reliability of device.

Description

Technical Field

[0001] This utility model mainly relates to the technical field of bridge engineering, specifically a centralized drainage type bridge expansion joint. Background Technology

[0002] Bridge expansion joints are crucial components for ensuring the structural safety and driving comfort of bridges. Bridges are affected by various factors such as temperature changes, concrete shrinkage and creep, and vehicle loads, causing expansion and contraction deformation at bridge joints. To accommodate this deformation while maintaining the integrity of the bridge structure and the smoothness of traffic, bridge expansion joints must be installed.

[0003] Traditional bridge expansion joints have many shortcomings in drainage design. Some expansion joints lack a dedicated centralized drainage structure, leaving water at bridge joints to rely on natural evaporation or runoff along the bridge surface. Natural evaporation is slow, especially during humid or rainy seasons, and prolonged water retention can erode the bridge structure and reduce its durability. Runoff along the bridge surface can lead to water accumulation, affecting traffic safety and potentially polluting the environment below the bridge.

[0004] Some expansion joints, despite having drainage designs, also have defects in their drainage structures. For example, an unreasonable drainage channel design can easily accumulate debris, leading to poor drainage; the connection between the drainage channel and other components of the expansion joint is not secure enough, and problems such as loosening or detachment can easily occur during bridge expansion and contraction, affecting the drainage function and the overall performance of the expansion joint.

[0005] Furthermore, traditional expansion joint installation methods are relatively complex, requiring some components to be prefabricated and demanding high precision during on-site installation, thus increasing construction difficulty and cost. Moreover, some expansion joints are not reliably connected to the bridge structure, and under long-term use, repeated vehicle loads and environmental factors can easily lead to loosening or damage, affecting the safety and service life of the bridge. Utility Model Content

[0006] Based on this, the purpose of this utility model is to provide a centralized drainage type bridge expansion joint to solve the technical problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: A centralized drainage type bridge expansion joint includes an expansion body, a drainage trough at the bottom of the expansion body, support plates at both ends of the drainage trough, a strip-shaped locking block at one end of the support plate, a cement pressing block on one side of the strip-shaped locking block, multiple arc-shaped protrusions at the bottom of the drainage trough, and positioning screws at the top of the support plate.

[0008] Preferably, the drainage trough is semi-circular in shape and is arranged in strips at the bridge joint, located below the expansion joint.

[0009] Preferably, the top of the support plate is also provided with multiple reserved mounting holes.

[0010] Preferably, the strip-shaped card block has a trapezoidal cross-section, and its inclined surface is in contact with the cement block.

[0011] Preferably, the cement block is not a finished product, but is formed by mixing cement, sand, gravel, and additives evenly and then filling the mixture.

[0012] Preferably, the arc-shaped protrusion is strip-shaped and is respectively disposed at the bottom of the drainage channel and at both ends of the bottom.

[0013] Preferably, the drainage channel, the support plate, and the strip-shaped card block are an integral structure.

[0014] In summary, this technical solution has the following main advantages: This utility model features a specially designed drainage channel structure to centrally collect and smoothly drain water accumulated at bridge joints, preventing water erosion of the bridge structure and improving its durability. Through a rational design of the drainage channel's shape and internal structure, such as a semi-circular drainage channel and an arc-shaped protrusion at the bottom, drainage capacity is enhanced, preventing debris from accumulating and clogging the drainage channels. The connection methods and structural design of each component of the expansion joint were optimized to ensure that components such as drainage channels and support plates remain stable and do not loosen or fall off during bridge expansion and contraction. An integrated structural design was adopted to improve the overall stability and reliability of the device. Attached Figure Description

[0015] Figure 1 Axonometric view of the overall structure of this utility model Figure 1 ; Figure 2 Axonometric view of the overall structure of this utility model Figure 2 ; Figure 3 This is a disassembled schematic diagram of the overall structure of this utility model.

[0016] Attached Figure Descriptions: 10. Telescopic body; 11. Drainage channel; 12. Support plate; 13. Strip-shaped clamping block; 14. Cement block; 15. Arc-shaped protrusion; 16. Positioning screw; 121. Reserved mounting hole. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0018] Example like Figures 1 to 3 As shown, a centralized drainage type bridge expansion joint includes an expansion body 10, a drainage trough 11 at the bottom of the expansion body 10, support plates 12 at both ends of the drainage trough 11, a strip-shaped locking block 13 at one end of the support plate 12, a cement pressing block 14 on one side of the strip-shaped locking block 13, multiple arc-shaped protrusions 15 at the bottom of the drainage trough 11, and positioning screws 16 at the top of the support plate 12.

[0019] The drainage channel 11 is semi-circular in shape and is set in strip form at the bridge joint, located below the expansion joint 10.

[0020] The top of the support plate 12 is also provided with multiple reserved mounting holes 121.

[0021] The strip-shaped card block 13 has a trapezoidal cross-section, and its inclined surface is in contact with the cement block 14.

[0022] Cement blocks 14 are not finished products, but are formed by mixing cement, sand, gravel, and additives evenly and then filling them.

[0023] The arc-shaped protrusion 15 is strip-shaped and is respectively set at the bottom of the drainage groove 11 and at both ends of the bottom.

[0024] The drainage channel 11, the support plate 12, and the strip-shaped locking block 13 are integrated into one structure.

[0025] It should be noted that in this embodiment, the centralized drainage bridge expansion joint is applied to the bridge joint to adapt to the expansion and contraction deformation of the bridge caused by factors such as temperature changes and vehicle loads, and to achieve centralized drainage function.

[0026] The expansion joint 10, as the core expansion component of the device, spans the bridge joint and has a drainage channel 11 at its bottom. The drainage channel 11 is semi-circular in shape and is positioned as a strip at the bridge joint, below the expansion joint 10. This design effectively collects water accumulated at the expansion joint. The bottom of the drainage channel 11 has multiple arc-shaped protrusions 15, which are strip-shaped and located at the bottom and both ends of the bottom of the drainage channel 11. These arc-shaped protrusions 15 not only increase the structural strength of the bottom of the drainage channel 11 but also guide water flow to a certain extent, making drainage smoother.

[0027] Support plates 12 are provided at both ends of the drainage channel 11. The drainage channel 11, support plates 12, and the strip-shaped locking blocks 13 mentioned later are integrated into one structure. This integrated design ensures the overall stability and reliability of the device. Positioning screws 16 are provided on the top of the support plate 12, which can be used to initially fix the support plate 12 in the predetermined position on the bridge. At the same time, multiple pre-drilled mounting holes 121 are also provided on the top of the support plate 12, which facilitate the installation of subsequent possible reinforcements or other components.

[0028] One end of the support plate 12 is provided with a strip-shaped clamping block 13. The cross-section of the strip-shaped clamping block 13 is trapezoidal, and its inclined surface is in contact with the cement block 14. The cement block 14 is not a finished product, but is formed on the construction site by mixing cement, sand, gravel, additives and other materials evenly and then filling it. During filling, the mixed cement mixture is poured into the gap between the strip-shaped clamping block 13 and the bridge structure. After it solidifies, the cement block 14 is formed. The cement block 14 fits tightly with the inclined surface of the strip-shaped clamping block 13, further enhancing the connection stability between the device and the bridge structure.

[0029] In actual use, when water accumulates at the bridge expansion joints, the water flows down the surface of the expansion joint 10 into the drainage trough 11 at the bottom. Because the drainage trough 11 is semi-circular and has an arc-shaped protrusion 15 at the bottom, the water can flow smoothly within the drainage trough 11 and be discharged outside the bridge through both ends of the drainage trough 11 or the pre-set drainage outlets, thus achieving centralized drainage and effectively preventing water accumulation from eroding and damaging the bridge structure, and extending the service life of the bridge.

[0030] When the bridge expands or contracts due to factors such as temperature changes or vehicle loads, the expansion joint 10 will expand or contract accordingly. Because the connection design between the drainage channel 11, support plate 12, and other components and the expansion joint 10 is reasonable, and the device as a whole possesses a certain degree of flexibility and adaptability, the drainage channel 11 can maintain a relatively stable state during the expansion and contraction of the expansion joint 10, and will not be damaged or have its drainage function affected by expansion and contraction deformation. At the same time, the connection structure composed of the support plate 12, strip-shaped clamping block 13, and cement pressing block 14 can withstand the stress generated during expansion and contraction, ensuring a tight connection between the device and the bridge structure, preventing loosening or detachment.

[0031] This centralized drainage bridge expansion joint exhibits excellent performance under various environmental conditions. In high-temperature environments, the materials used in the joint possess excellent heat resistance, preventing deformation or damage due to temperature increases, and allowing water to drain normally from the drainage channel 11. In low-temperature environments, the material's freeze-thaw resistance ensures the stability of the joint, preventing brittleness and cracking due to cold. In humid or rainy areas, the centralized drainage function of the drainage channel 11 effectively handles large amounts of accumulated water, preventing water damage to the bridge structure; in arid regions, the joint's sealing and stability ensure long-term normal operation, reducing maintenance costs.

[0032] The above embodiments are only for illustrating the technical concept of this utility model and should not be construed as limiting the scope of protection of this utility model. Any modifications made to the technical solution based on the technical concept proposed by this utility model shall fall within the scope of protection of this utility model.

Claims

1. A centralized drainage type bridge expansion joint, comprising an expansion body (10), characterized in that, The telescopic body (10) has a drainage groove (11) at the bottom, and support plates (12) at both ends of the drainage groove (11). One end of the support plate (12) has a strip-shaped locking block (13), and one side of the strip-shaped locking block (13) has a cement pressing block (14). The bottom of the drainage groove (11) has multiple arc-shaped protrusions (15), and the top of the support plate (12) has a positioning screw (16).

2. The centralized drainage type bridge expansion joint according to claim 1, characterized in that, The drainage channel (11) is semi-circular in shape and is set in strips at the bridge joint, located below the expansion joint (10).

3. A centralized drainage type bridge expansion joint according to claim 1, characterized in that, The top of the support plate (12) is also provided with a number of reserved mounting holes (121).

4. A centralized drainage type bridge expansion joint according to claim 1, characterized in that, The strip-shaped card block (13) has a trapezoidal cross-section, and its inclined surface is in contact with the cement block (14).

5. A centralized drainage type bridge expansion joint according to claim 1, characterized in that, The cement block (14) is not a finished product, but is formed by mixing cement, sand, gravel and additives evenly and then filling it.

6. A centralized drainage type bridge expansion joint according to claim 1, characterized in that, The arc-shaped protrusion (15) is strip-shaped and is respectively located at the bottom of the drainage trough (11) and at both ends of the bottom.

7. A centralized drainage type bridge expansion joint according to claim 1, characterized in that, The drainage channel (11), support plate (12), and strip-shaped card block (13) are an integral structure.

Images