A stepped drainage bridge expansion joint

Abstract

The utility model relates to bridge engineering technical field discloses a kind of bridge expansion device of stepped drainage, it includes anchoring edge beam, anchoring middle beam, compression-resistant support rib plate, water guide plate, L-shaped water collector, limit board, U-shaped shunt baffle, L-shaped staggered plate and anti-blocking grating. Efficient drainage is realized by the synergistic effect of water guide plate, L-shaped water collector and U-shaped shunt baffle, the stepped path slows down the flow rate to promote sediment deposition, and the anti-blocking grating blocks debris to ensure smooth flow. The present application can improve the drainage efficiency, prevent clogging and enhance the structural stability, suitable for a variety of bridge scenes, with significant technical advantages and application value.

Description

Technical Field

[0001] This utility model relates to the field of bridge engineering technology, specifically to a bridge expansion joint with stepped drainage. Background Technology

[0002] Bridge expansion joints are an important component of bridge structures, primarily used to accommodate displacement changes caused by temperature variations, loads, and concrete shrinkage and creep, while ensuring the smoothness and safety of vehicle traffic. In practical use, bridge expansion joints often face problems such as rainwater erosion and sediment deposition, which not only affect their drainage performance but may also lead to blockages or damage, thus impacting their service life and functionality.

[0003] In existing technologies, while some bridge expansion joints incorporate drainage structures, they generally suffer from low drainage efficiency, susceptibility to clogging, and complex structures, making it difficult to effectively address complex drainage needs. Especially in environments with heavy rainfall or high sediment content, traditional drainage structures often fail to drain accumulated water promptly, leading to sediment buildup inside the device and further exacerbating drainage problems. Furthermore, existing devices lack proper guidance for water flow paths, easily causing localized water accumulation or excessive water flow impact, which adversely affects the device's sealing and stability.

[0004] Therefore, there is an urgent need for a bridge expansion joint that can efficiently drain water, prevent sediment deposition, and has good structural stability, in order to solve the above-mentioned technical problems and improve the overall performance of the bridge expansion joint. Utility Model Content

[0005] This invention addresses the problems of high clogging risk, concentrated water flow impact, and uneven sediment deposition in existing bridge expansion joints during drainage. It proposes a stepped drainage bridge expansion joint. Through optimized structural design, the device achieves efficient drainage and sediment separation, thereby significantly improving its stability and reliability.

[0006] This utility model provides a bridge expansion joint with stepped drainage, including anchoring side beams, anchoring middle beams, compressive support ribs, water guide plates, L-shaped water collection hoppers, limiting plates, U-shaped diversion baffles, L-shaped staggered plates, and anti-clogging grilles. Wherein: The anchoring beams, located on both sides of the device, are made of high-strength metal and are used to fix and support the entire device. Furthermore, the anchoring beams are connected to the bridge structure via bolts to ensure the stability of the device on the bridge.

[0007] The anchoring beam is positioned between the two anchoring side beams, forming an integral frame together. The anchoring beam can withstand external loads and distribute deformation stress. Specifically, the connection between the anchoring beam and the anchoring side beams is achieved by welding, with the weld length not less than 80% of the connection surface length, to enhance overall rigidity.

[0008] Furthermore, the compressive support ribs are installed on the anchoring beam, and their cross-section is rectangular, with a length matching that of the anchoring beam. The compressive support ribs are evenly distributed along the anchoring beam to effectively disperse external forces and prevent local stress concentration.

[0009] The water guide plate is located at the top of the device, with an inclination angle of 5 to 15 degrees, and is used to guide the water flow into the L-shaped water collection hopper below. The surface of the water guide plate is provided with grooves, the grooves being 2 to 5 millimeters deep and 10 to 20 millimeters wide, with the grooves oriented in the same direction as the water flow to reduce water flow resistance and prevent water accumulation.

[0010] Furthermore, the L-shaped water collecting hopper is located below the water guide plate, and the inner wall of the L-shaped water collecting hopper is coated with a corrosion-resistant coating with a thickness of 0.2 mm to 0.5 mm, which is used to collect and guide the water flow, while reducing the direct impact of the water flow on the device.

[0011] The limiting plates are vertically installed inside the device to restrict and guide the direction and speed of the water flow. There are two or more limiting plates to control the water flow path and prevent the water flow from directly impacting the internal structure of the device.

[0012] Furthermore, the U-shaped diversion baffle is located at the bottom of the device, with its opening facing the drainage channels on both sides. The U-shaped diversion baffle divides the water flow into two paths, which are then discharged to the sides respectively. The inner side of the U-shaped diversion baffle is provided with an arc-shaped guide surface to ensure uniform water flow distribution and avoid concentrated impact that could lead to poor drainage or structural damage.

[0013] The L-shaped staggered plates are located inside the device, arranged in multiple staggered layers to form a stepped drainage path. The design of the L-shaped staggered plates increases the length of the water flow path, slows down the water flow velocity, and promotes sediment deposition.

[0014] Specifically, the anti-clogging grille is installed at the inlet of the drainage channel at the bottom of the device, with a mesh size of 5 mm to 10 mm and a wire diameter of 2 mm to 4 mm. The anti-clogging grille allows water to flow through while blocking larger particles, preventing silt and other debris from clogging the drainage channel. The anti-clogging grille is connected to the drainage channel by a snap-fit ​​mechanism, facilitating disassembly and cleaning.

[0015] The beneficial effects of this utility model are as follows: Through the synergistic effect of the water guide plate, L-shaped water collection hopper, and U-shaped diversion baffle, the water flow is rapidly guided and evenly distributed, significantly improving drainage efficiency. The stepped drainage path and L-shaped staggered plate design effectively slow down the water flow velocity, promote sediment deposition, and prevent sediment from entering the drainage channel with the water flow. The anti-clogging grille can block larger particles, prevent drainage channel blockage, and extend the service life of the device. The combined design of anchoring side beams, anchoring center beams, and compressive support ribs enhances the overall strength and deformation resistance of the device, adapting to the complex working conditions of bridge expansion joints.

[0016] In summary, this utility model achieves efficient drainage, sediment separation, and anti-clogging functions through optimized structural design, making it suitable for various bridge expansion joint scenarios and possessing significant technical advantages and application value. Attached Figure Description

[0017] Figure 1 This is a front view structural diagram of the present utility model; Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0018] In the diagram: 1. Anchoring side beam; 2. Anchoring middle beam; 3. Compression-resistant support rib; 4. Water guide plate; 5. L-shaped water collection hopper; 6. Limiting plate; 7. U-shaped diversion baffle; 8. L-shaped staggered plate; 9. Anti-clogging grille. Detailed Implementation

[0019] 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.

[0020] This utility model relates to a bridge expansion joint with stepped drainage, the structure of which is as follows: Figure 1 and Figure 2 As shown, it includes an anchoring side beam 1, an anchoring middle beam 2, a compressive support rib plate 3, a water guide plate 4, an L-shaped water collection hopper 5, a limiting plate 6, a U-shaped diversion baffle 7, an L-shaped staggered plate 8, and an anti-clogging grille 9. The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0021] In practical applications, this device achieves efficient drainage and sediment separation through optimized design, ensuring unobstructed drainage at bridge expansion joints while enhancing the overall structural stability and durability. The device is installed at the bridge expansion joints, firmly connected to the bridge structure, forming a complete drainage system. Figure 1It can be seen that the entire device consists of multiple functional components, which work together to complete the function of stepped drainage.

[0022] First, anchor beams 1, located on both sides of the device, are made of high-strength metal and are used to fix and support the entire device. Anchor beams 1 are connected to the bridge main body by bolts, ensuring the stability of the device on the bridge. Both ends of anchor beams 1 are tightly connected to the bridge main body by bolts, forming a robust support frame. The design of anchor beams 1 not only allows them to withstand external loads but also maintains the structural integrity even when the bridge undergoes minor deformations.

[0023] The anchoring beam 2 is positioned between the two anchoring side beams 1, forming a complete frame together. The anchoring beam 2 can distribute external loads and absorb deformation stress. Figure 1 In the middle of the device, the anchor beam 2 is located and is connected to the anchor side beam 1 by welding. The weld length is not less than 80% of the length of the connection surface to enhance the overall rigidity. This welding process ensures that the device will not loosen or deform due to external pressure during long-term use.

[0024] The compressive support ribs 3 are installed on the anchoring beam 2, and their cross-section is rectangular, with a length matching that of the anchoring beam 2. The compressive support ribs 3 are evenly distributed along the anchoring beam 2 to effectively disperse external forces and prevent localized stress concentration. Figure 1 In the middle, the compressive support rib 3 is closely integrated with the anchor beam 2 to form a stable support system, ensuring that the device can remain stable when subjected to water flow impact or vehicle vibration.

[0025] A water guide plate 4 is located at the top of the device, with an inclination angle of 5 to 15 degrees, used to guide water flow into the L-shaped water collection hopper 5 below. The surface of the water guide plate 4 is provided with grooves, the groove depth being 2 mm to 5 mm and the width 10 mm to 20 mm, the groove direction being consistent with the water flow direction to reduce water flow resistance and prevent water accumulation. Figure 1 In the middle, the inclined design of the water guide plate 4 is clearly visible. The grooves on its surface can smoothly guide the water flow to the L-shaped water collection bucket 5, avoiding water stagnation and sediment deposition.

[0026] The L-shaped water collection hopper 5 is located below the water guide plate 4. The inner wall of the L-shaped water collection hopper 5 is coated with a corrosion-resistant coating with a thickness of 0.2 mm to 0.5 mm. This coating is used to collect and guide the water flow while reducing the direct impact of the water flow on the device. The corrosion-resistant coating on the inner wall of the L-shaped water collection hopper 5 can extend the service life of the device while ensuring that the water flows smoothly into the subsequent drainage path.

[0027] Limiting plates 6 are vertically installed inside the device to restrict and guide the direction and speed of the water flow. Two or more limiting plates 6 are used to control the water flow path and prevent the water flow from directly impacting the internal structure of the device. Figure 1 The position of the limiting plate 6 is clearly marked. Its function is to guide the water flow in segments to avoid the water flow from concentrating and impacting a certain part, thereby protecting the integrity of the device.

[0028] The U-shaped diversion baffle 7 is located at the bottom of the device, with its opening facing the drainage channels on both sides. The U-shaped diversion baffle 7 divides the water flow into two paths, which are then discharged to the sides respectively. The inner side of the U-shaped diversion baffle 7 is provided with an arc-shaped guide surface to ensure uniform water flow distribution and avoid concentrated impact that could lead to poor drainage or structural damage. The arc-shaped guide surface design of the U-shaped diversion baffle 7 can effectively disperse water flow pressure, allowing the water to flow smoothly to the drainage channels on both sides.

[0029] The L-shaped staggered plates 8 are located inside the device, arranged in multiple staggered layers to form a stepped drainage path. The design of the L-shaped staggered plates 8 increases the length of the water flow path, slows down the water flow velocity, and promotes sediment deposition. Figure 1 In the middle, the arrangement of the L-shaped staggered plates 8 is clearly visible. Its stepped design slows down the water flow step by step, allowing sediment to be deposited at a lower flow rate.

[0030] An anti-clogging grille 9 is installed at the inlet of the drainage channel at the bottom of the device. Its mesh size is 5 mm to 10 mm, and the wire diameter is 2 mm to 4 mm. The anti-clogging grille 9 allows water to flow through while blocking larger particles, preventing silt and other debris from clogging the drainage channel. The anti-clogging grille 9 is connected to the drainage channel by a snap-fit ​​mechanism, facilitating disassembly and cleaning. Figure 1 The location of the anti-clogging grille 9 is clearly marked. Its mesh structure can effectively filter mud and sand, ensuring that the drainage channel is always unobstructed.

[0031] The working principle of this utility model is as follows: S1: Water flows into the guide plate 4 from above, and after passing through the inclined guide plate 4, it smoothly enters the L-shaped water collection hopper 5; S2: In the L-shaped water collection hopper 5, the water flow is concentrated and guided to the subsequent drainage path; S3: The water flow gradually slows down and separates from the silt through the stepped path formed by the limiting plate 6 and the L-shaped staggered plate 8; S4: The silt is deposited on one side of the baffle plate, while the water flow crosses the baffle plate and reaches the U-shaped diversion baffle 7, where it is divided into two paths and discharged to the water-stop strips on both sides; S5: Finally, the anti-clogging grille 9 further filters silt and other debris to ensure that the drainage channel is always unobstructed.

[0032] In practical applications, when rainwater or water from a bridge flows into the device, the inclined design of the guide plate 4 quickly guides the water flow into the L-shaped water collection hopper 5. Because the inner wall of the L-shaped water collection hopper 5 is coated with a corrosion-resistant coating, the water flow will not corrode the device upon entering. Subsequently, the water flow is guided in stages by the limiting plate 6, preventing direct impact on the internal structure of the device. The stepped design of the L-shaped staggered plate 8 gradually slows the water flow, allowing sediment to settle on one side of the baffle plate at lower flow rates. After crossing the baffle plate, the water flow reaches the U-shaped diversion baffle 7, where it is divided into two paths and discharged into the drainage channels on both sides. During this process, the arc-shaped guiding surface of the U-shaped diversion baffle 7 ensures uniform water distribution, preventing concentrated impacts that could lead to poor drainage or structural damage. Finally, the mesh structure of the anti-clogging grille 9 effectively filters sediment, ensuring that the drainage channels remain unobstructed.

[0033] This invention utilizes the synergistic effect of the water guide plate 4, the L-shaped water collection hopper 5, and the U-shaped diversion baffle 7 to rapidly guide and evenly distribute water flow, significantly improving drainage efficiency. The stepped drainage path and the L-shaped staggered plate 8 effectively slow down the water flow velocity, promote sediment deposition, and prevent sediment from entering the drainage channel with the water flow. The anti-clogging grille 9 can block larger particles, prevent drainage channel blockage, and extend the service life of the device. The combined design of the anchoring side beam 1, the anchoring middle beam 2, and the compressive support rib 3 enhances the overall strength and deformation resistance of the device, adapting to the complex working conditions of bridge expansion joints.

[0034] In summary, this utility model, through optimized structural design, achieves efficient drainage, sediment separation, and anti-clogging functions, making it suitable for various bridge expansion joint scenarios and possessing significant technical advantages and application value. In practical engineering, this device can be widely used in urban viaducts, highway bridges, and railway bridges, providing reliable assurance for the stable operation of bridge drainage systems.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[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 bridge expansion joint with stepped drainage system, characterized in that: The components include anchoring side beams (1), anchoring middle beams (2), compressive support ribs (3), water guide plates (4), L-shaped water collection hoppers (5), limiting plates (6), U-shaped diversion baffles (7), L-shaped staggered plates (8), and anti-clogging grilles (9), among which: Anchoring side beams (1) are located on both sides of the device and connected to the main body of the bridge by bolts. Anchoring middle beams (2) are set between the two anchoring side beams (1) and welded to the anchoring side beams (1). Compression support ribs (3) are installed on the anchoring middle beams (2). Water guide plates (4) are located at the top of the device. L-shaped water collection buckets (5) are set below the water guide plates (4). Limiting plates (6) are installed vertically inside the device. U-shaped diversion baffles (7) are located at the bottom of the device. L-shaped staggered plates (8) are arranged in multiple staggered layers to form a stepped drainage path. Anti-clogging grilles (9) are set at the inlet of the drainage channel at the bottom of the device.

2. The bridge expansion joint with stepped drainage according to claim 1, characterized in that: The surface of the water guide plate (4) is provided with a groove, the groove depth is 2 mm to 5 mm and the width is 10 mm to 20 mm.

3. A bridge expansion joint with stepped drainage according to claim 1, characterized in that: The anti-clogging grille (9) has a mesh size of 5 mm to 10 mm and a wire diameter of 2 mm to 4 mm.

4. A bridge expansion joint with stepped drainage according to claim 1, characterized in that: The water guide plate (4) has an inclination angle of 5 to 15 degrees.

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