Bridge expansion joint drainage structure

Abstract

The invention relates to the field of expansion joint drainage structures, and provides a bridge expansion joint drainage structure which is applied to a bridge constructed by using steel box girders, a water collecting piece is arranged between bridge expansion joints, and the water collecting piece is located at the bottom ends of the bridge expansion joints; the water collecting piece is provided with a water collecting groove which extends in the length direction of the water collecting piece. A water falling opening is formed in the bottom of the water collecting tank so as to drain rainwater collected by the water collecting tank; the positions, corresponding to the two sides of the bridge expansion joint, of the end face of the steel box girder are each provided with a row of overhanging pieces, and the rows of overhanging pieces on the steel box girder are arranged in the width direction of the steel box girder at intervals. Hanging holes matched with the overhanging pieces are formed in the two sides of the water collecting piece, and the water collecting piece is hung on the overhanging pieces through the hanging holes; the two sides of the water collecting piece are attached to the end faces of the corresponding steel box girders respectively, and when the width of the bridge expansion joint changes, the width of the water collecting piece changes synchronously. The drainage structure is convenient to construct, the water collecting piece is convenient to replace when damaged, and the construction cost and the maintenance cost of the drainage structure can be saved.

Description

Technical Field

[0001] This application relates to the field of expansion joint drainage structures, and particularly to a bridge expansion joint drainage structure. Background Technology

[0002] Bridge main beams will shift due to thermal expansion and contraction. To ensure the free expansion and contraction of the main beams, bridge expansion joints are installed at bridge junctions or where the main beams intersect with the abutments. Bridge expansion joints usually need to be waterproofed to collect rainwater into the bridge's own drainage system and prevent rainwater from falling onto the road surface and supports below the bridge.

[0003] As bridges age, their waterproofing structures are subjected to long-term impacts from vehicle loads, temperature deformation, vibration, and corrosion from material aging, dust, and acidic rainwater. This can lead to problems such as sealant aging, steel deformation, and loosening of anchor bolts, ultimately causing the waterproofing structure to fail. When the waterproofing structure fails, rainwater leaks through the gaps at the beam ends and drips directly onto the pedestrian walkway below, affecting pedestrian safety (due to slippery surfaces) and potentially corroding the concrete beams and sidewalk structure, reducing the durability of the bridge's ancillary structures. Furthermore, replacing existing waterproofing structures when damaged is a complex process, time-consuming, and costly undertaking. Summary of the Invention

[0004] To address the aforementioned problems, this application provides a bridge expansion joint drainage structure. This drainage structure is ingeniously designed and simple in structure, making it particularly suitable for replacing and upgrading traditional bridge expansion joint drainage structures. This drainage structure is easy to construct. Furthermore, because the water collection component is suspended within the bridge expansion joint through the cooperation of a cantilevered component on the end face of the steel box girder and a suspension hole on the water collection component, the water collection component is easy to assemble and disassemble, and easy to replace when damaged, thus saving on construction and maintenance costs. The technical solution adopted in this application is as follows: A bridge expansion joint drainage structure is applied to bridges constructed using steel box girders. A water collection device is provided between the bridge expansion joints, located at the bottom end of the expansion joint and extending along the width direction of the steel box girder. The water collection device has a water collection trough extending along its length. A drain outlet is provided at the bottom of the water collection trough to discharge the collected rainwater. A row of cantilever members is provided on the end faces of the steel box girders on both sides of the bridge expansion joint. The row of cantilever members on the steel box girder is spaced apart along the width direction of the steel box girder. The water collection member is provided with suspension holes on both sides that are adapted to the cantilever members. The water collection member is suspended on the cantilever members through the suspension holes. The water collection member is attached to the end faces of the corresponding steel box girders on both sides. When the width of the bridge expansion joint changes, the width of the water collection member changes synchronously.

[0005] The drainage structure of this application is ingeniously designed and simple in structure, making it particularly suitable for replacing and upgrading traditional bridge expansion joint drainage structures. This drainage structure is easy to construct. Furthermore, because the water collection component is suspended in the bridge expansion joint through the cooperation of the cantilevered component on the end face of the steel box girder and the suspension hole on the water collection component, the water collection component is easy to disassemble and assemble, and easy to replace when damaged, thus saving on the construction and maintenance costs of the drainage structure.

[0006] In some embodiments, the water collecting component is attached to the corresponding end face of the steel box girder by a plurality of magnetic attractors on both sides to prevent the water collecting component from separating from the corresponding end face of the steel box girder; the plurality of magnetic attractors located on the same side of the water collecting component are arranged at intervals along the width direction of the steel box girder.

[0007] Before the water collection component is suspended onto the cantilever, the magnetic attachment provides pre-fixation for its installation. The water collection component can be magnetically attached to the end face of the steel box girder, eliminating the need for additional measures to prevent it from falling. Then, the position of the water collection component is adjusted so that its suspension hole is hooked onto the cantilever, thus saving on disassembly and assembly costs. Furthermore, the magnetic attachment ensures that one side of the water collection component is always clamped between the magnetic attachment and the end face of the steel box girder, preventing rainwater from flowing down the bridge through excessive gaps. Additionally, the magnetic attachment prevents the water collection component from detaching from the cantilever.

[0008] In some embodiments, the water collecting member has a first ear plate portion on both sides corresponding to the cantilever member, and the first ear plate portion has the suspension hole.

[0009] In some embodiments, the water collecting component has a second ear plate on both sides, and the second ear plate has a receiving groove on the side near the water collecting tank, and the magnetic suction component is engaged in the receiving groove.

[0010] When using magnetic suction to pre-fix the water collection component, the magnetic suction component can be pre-positioned in the receiving groove to prevent it from falling off the water collection component, which reduces the difficulty of pre-fixing the water collection component.

[0011] In some embodiments, the first ear plate portion and the second ear plate portion located on the same side of the water collection component are alternately arranged along the width direction of the steel box girder.

[0012] By alternating the arrangement of the first ear plate and the second ear plate, the stress points of the water collection component can be evenly distributed, so that the water collection component is evenly stressed, reducing the risk of the water collection component falling off the cantilever component and the risk of a large gap appearing between one side of the water collection component and the end face of the steel box girder.

[0013] In some embodiments, the cantilever member is a threaded rod; a row of threaded holes is provided on the end face of the steel box girder corresponding to both sides of the bridge expansion joint, and the row of threaded holes on the steel box girder is arranged along the width direction of the steel box girder; the rod is screwed into the threaded hole, and the water collection member is suspended on the rod through the suspension hole.

[0014] In some embodiments, an anti-loosening washer is provided between the rod and the threaded hole. By providing an anti-loosening washer, the risk of the rod loosening can be reduced, the stability of the bolted connection of the rod can be ensured, and the rod can be prevented from falling off the end face of the steel box girder.

[0015] In some embodiments, the cantilever is inclined upward so that the cantilever end of the cantilever is higher than the end of the cantilever that connects to the end face of the steel box girder.

[0016] By tilting the cantilever upwards, after the water collection component is suspended on the cantilever, the suspension hole of the water collection component is always located at the connection between the cantilever and the end face of the steel box girder under the action of gravity. This reduces the risk of the suspension hole of the water collection component falling off the cantilever, and also reduces the risk of a large gap appearing between one side of the water collection component and the end face of the steel box girder due to changes in the width of the bridge expansion joint.

[0017] In some embodiments, the water collection element is made of rubber.

[0018] In some embodiments, a drainage channel is provided near the edge of the top of the bridge, and the drainage channel extends along the length of the bridge; rainwater collected by the drainage channel falls into the water collection channel at the bridge expansion joint.

[0019] The bridge expansion joint drainage structure provided in this application has at least one of the following beneficial effects: 1. This application provides a bridge expansion joint drainage structure, which is ingeniously designed and simple in structure, making it particularly suitable for replacing and upgrading traditional bridge expansion joint drainage structures. This drainage structure is easy to construct. Furthermore, because the water collection component is suspended in the bridge expansion joint through the cooperation of a cantilevered component on the end face of the steel box girder and a suspension hole on the water collection component, the water collection component is easy to assemble and disassemble, and easy to replace when damaged, thus saving on construction and maintenance costs.

[0020] 2. The bridge expansion joint drainage structure provided in this application uses a magnetic chuck to pre-fix the water collection component before it is suspended onto the cantilever component. The water collection component can be magnetically attached to the end face of the steel box girder, eliminating the need for other measures to prevent it from falling off. Then, the position of the water collection component is adjusted so that its suspension hole is hooked onto the cantilever component, thus saving on the cost of disassembling and assembling the water collection component. Furthermore, the presence of the magnetic chuck ensures that one side of the water collection component is always clamped between the magnetic chuck and the end face of the steel box girder, and the other side remains in contact with the end face of the steel box girder, preventing rainwater from falling under the bridge through excessive gaps between the water collection component and the end face of the steel box girder. In addition, the magnetic chuck prevents the water collection component from detaching from the cantilever component.

[0021] 3. The bridge expansion joint drainage structure provided in this application can pre-fix the water collection component using magnetic suction components, by pre-setting the magnetic suction components in the receiving groove to prevent the magnetic suction components from falling off the water collection components, which reduces the difficulty of pre-fixing the water collection components.

[0022] 4. The bridge expansion joint drainage structure provided in this application can evenly distribute the stress points of the water collection component by alternately arranging the first ear plate and the second ear plate, so that the water collection component is evenly stressed, reducing the risk of the water collection component falling off the cantilever component and the risk of a large gap appearing between one side of the water collection component and the end face of the steel box girder.

[0023] 5. The bridge expansion joint drainage structure provided in this application can reduce the risk of loosening of the members by setting anti-loosening washers, ensure the stability of the bolted connection of the members, and prevent the members from falling off the end face of the steel box girder.

[0024] 6. The bridge expansion joint drainage structure provided in this application, by setting the cantilever member upward, after the water collection member is suspended on the cantilever member, the suspension hole of the water collection member can always be located at the connection between the cantilever member and the end face of the steel box girder under the action of gravity, which reduces the risk of the suspension hole of the water collection member falling off the cantilever member, and also reduces the risk of a large gap appearing between one side of the water collection member and the end face of the steel box girder due to the change of the width of the bridge expansion joint. Attached Figure Description

[0025] The preferred embodiments will be described below in a clear and easy-to-understand manner, with reference to the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages, and implementation methods of a bridge expansion joint drainage structure: Figure 1 This is a structural schematic diagram of the drainage structure of this application (only the steel box girder on the side of the bridge expansion joint is shown). Figure 2 yes Figure 1 Exploded view of the embodiment; Figure 3 This is a structural diagram of two adjacent steel box girders (the area between the bridge expansion joint is a drainage structure). Figure 4 yes Figure 3 Top view of the embodiment; Figure 5 yes Figure 3 Bottom view of the embodiment.

[0026] Explanation of icon numbers: 1. Steel box girder, 11. Threaded hole, 12. Drainage channel, 2. Water collection component, 21. Drain outlet, 22. First ear plate, 23. Second ear plate, 231. Cantilever component, 3. Magnetic suction component, 4. Anti-loosening washer, 5. Bridge expansion joint, 6. Detailed Implementation

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the specific implementation methods of this application will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without creative effort.

[0028] To keep the drawings concise, each drawing only schematically shows the parts relevant to this application, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0029] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0030] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] refer to Figures 1-5This application provides a bridge expansion joint drainage structure, which is applied to a bridge constructed using a steel box girder 1. A water collection component 2 is provided between the bridge expansion joints 6. The water collection component 2 is located at the bottom end of the bridge expansion joint 6 and extends along the width direction of the steel box girder 1. The water collection component 2 is provided with a water collection trough, which extends along the length direction of the water collection component 2. A drain outlet 21 is provided at the bottom of the water collection trough to drain the rainwater collected in the water collection trough. A row of cantilevered members 3 is provided on the end faces of the steel box girders 1 on both sides of the bridge expansion joint 6. The row of cantilevered members 3 on the steel box girders 1 is arranged at intervals along the width direction of the steel box girders 1. The water collection member 2 is provided with suspension holes (not shown in the figure) on both sides that are adapted to the cantilevered members 3. The water collection member 2 is suspended on the cantilevered members 3 through the suspension holes. The water collection member 2 is attached to the end faces of the corresponding steel box girders 1 on both sides. When the width of the bridge expansion joint 6 changes, the width of the water collection member 2 changes synchronously.

[0033] Specifically, the water collection component 2 can be made of rubber or zinc-plated iron. Due to rubber's excellent elastic deformation capacity, corrosion resistance, and weather resistance, this application prefers rubber. The cross-sectional shape of the water collection component 2 can vary, for example, it can be U-shaped, C-shaped, or V-shaped. It is understood that the above-mentioned cross-sectional shapes of the water collection component 2 are merely illustrative examples and are not limitations on the cross-sectional shape of the water collection component 2. Additionally, it should be noted that the cantilever component 3 can be welded to the end face of the steel box girder 1, or it can be detachably connected to the end face of the steel box girder 1, for example, by screwing it onto the end face of the steel box girder 1. Another point to note is that, in order for the water in the collection trough to flow out from the drain outlet 21, the collection trough can be provided with a certain slope so that the water in the collection trough will naturally collect at the drain outlet 21. It is understood that the number and location of the drain outlets 21 can be selected according to drainage efficiency requirements, bridge column installation, etc.

[0034] The drainage structure of this application is ingeniously designed and simple in structure, making it particularly suitable for replacing and upgrading the drainage structure of traditional bridge expansion joints 6. This drainage structure is easy to construct. In addition, since the water collection component 2 is suspended in the bridge expansion joint 6 through the cooperation between the cantilever component 3 on the end face of the steel box girder 1 and the suspension hole on the water collection component 2, the water collection component 2 is easy to disassemble and assemble. When the water collection component 2 is damaged, it is easy to replace, which can save on the construction and maintenance costs of the drainage structure.

[0035] refer to Figure 1 , Figure 2 In one embodiment, the water collecting component 2 is attached to the end face of the corresponding steel box girder 1 by a plurality of magnetic attractors 4 on both sides to prevent the water collecting component 2 from separating from the end face of the corresponding steel box girder 1; the plurality of magnetic attractors 4 located on the same side of the water collecting component 2 are arranged at intervals along the width direction of the steel box girder 1.

[0036] It is worth noting that before the water collection component 2 is suspended onto the cantilever component 3, the magnetic attachment 4 provides pre-fixation for the installation of the water collection component 2. The water collection component 2 can be first attached to the end face of the steel box girder 1 via the magnetic attachment 4. At this point, no other measures are needed to prevent the water collection component 2 from falling off. Then, the position of the water collection component 2 is adjusted so that its suspension hole is attached to the cantilever component 3, thus saving on the cost of disassembling and assembling the water collection component 2. Furthermore, the presence of the magnetic attachment 4 ensures that one side of the water collection component 2 is always clamped between the magnetic attachment 4 and the end face of the steel box girder 1, and that one side of the water collection component 2 is always in contact with the end face of the steel box girder 1. This prevents rainwater from falling under the bridge through excessively large gaps between the water collection component 2 and the end face of the steel box girder 1. In addition, the presence of the magnetic attachment 4 prevents the water collection component 2 from detaching from the cantilever component 3.

[0037] refer to Figure 1 , Figure 2 , Figure 5 In one embodiment, the water collecting member 2 has a first ear plate portion 22 on both sides corresponding to the cantilever member 3, and the first ear plate portion 22 has a hanging hole.

[0038] refer to Figure 1 , Figure 2 , Figure 5 In one embodiment, the water collecting component 2 is provided with second ear plate portions 23 on both sides, and the second ear plate portions 23 are provided with a receiving groove 231 on the side near the water collecting tank, and the magnetic suction component 4 is engaged in the receiving groove 231.

[0039] It is understandable that when using the magnetic suction component 4 to pre-fix the water collection component 2, the magnetic suction component 4 can be pre-positioned in the receiving groove 231 to prevent the magnetic suction component 4 from falling off the water collection component 2, which reduces the difficulty of pre-fixing the water collection component 2.

[0040] refer to Figure 1 , Figure 2 , Figure 5 In one embodiment, the first ear plate portion 22 and the second ear plate portion 23 located on the same side of the water collection component 2 are alternately arranged along the width direction of the steel box girder 1. By arranging the first ear plate portion 22 and the second ear plate portion 23 alternately, the stress points of the water collection component 2 can be evenly distributed, so that the water collection component 2 is evenly stressed, reducing the risk of the water collection component 2 falling off the cantilever component 3 and the risk of a large gap appearing between one side of the water collection component 2 and the end face of the steel box girder 1.

[0041] refer to Figure 1 , Figure 2 , Figure 5 In one embodiment, the cantilever 3 is a threaded rod; a row of threaded holes 11 are respectively provided on the end face of the steel box girder 1 on both sides of the bridge expansion joint 6, and the row of threaded holes 11 on the steel box girder 1 is arranged along the width direction of the steel box girder 1; the rod is screwed into the threaded hole 11, and the water collection part 2 is suspended on the rod through the suspension hole.

[0042] refer to Figure 1 , Figure 2 , Figure 5 In one embodiment, an anti-loosening washer 5 is provided between the rod and the threaded hole 11. By providing the anti-loosening washer 5, the risk of the rod loosening can be reduced, the bolted stability of the rod can be ensured, and the rod can be prevented from falling off the end face of the steel box girder 1.

[0043] refer to Figure 1 , Figure 2 , Figure 5 In one embodiment, the cantilever 3 is inclined upward so that the cantilever end of the cantilever 3 is higher than the end of the cantilever 3 that is connected to the end face of the steel box girder 1.

[0044] It is easy to understand that by tilting the cantilever 3 upwards, after the water collection component 2 is suspended on the cantilever 3, the suspension hole of the water collection component 2 can always be located at the connection between the cantilever 3 and the end face of the steel box girder 1 under the action of gravity. This reduces the risk of the suspension hole of the water collection component 2 falling off the cantilever 3, and also reduces the risk of a large gap appearing between one side of the water collection component 2 and the end face of the steel box girder 1 due to changes in the width of the bridge expansion joint 6. In this embodiment, to reduce the difficulty of tilting the cantilever 3, welding is preferred to fix the cantilever 3.

[0045] refer to Figures 1-4 In one embodiment, a drainage ditch 12 is provided near the edge of the top of the bridge, and the drainage ditch 12 extends along the length of the bridge; rainwater collected by the drainage ditch 12 falls into the water collection ditch at the bridge expansion joint 6.

[0046] It should be noted that the above embodiments can be freely combined as needed. The above are merely preferred embodiments of this application. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A bridge expansion joint drainage structure, applied to bridges constructed using steel box girders, characterized in that, A water collection device is provided between the bridge expansion joints. The water collection device is located at the bottom of the bridge expansion joint and extends along the width direction of the steel box girder. The water collection device is provided with a water collection trough, which extends along the length direction of the water collection device. A drain outlet is provided at the bottom of the water collection trough to drain the rainwater collected by the water collection trough. A row of cantilever members is provided on the end faces of the steel box girders on both sides of the bridge expansion joint. The row of cantilever members on the steel box girder is spaced apart along the width direction of the steel box girder. The water collection member is provided with suspension holes on both sides that are adapted to the cantilever members. The water collection member is suspended on the cantilever members through the suspension holes. The water collection member is attached to the end faces of the corresponding steel box girders on both sides. When the width of the bridge expansion joint changes, the width of the water collection member changes synchronously.

2. The bridge expansion joint drainage structure according to claim 1, characterized in that, The water collection component is attached to the corresponding steel box girder end face by several magnetic components on both sides to prevent the water collection component from separating from the corresponding steel box girder end face; the several magnetic components located on the same side of the water collection component are arranged at intervals along the width direction of the steel box girder.

3. A bridge expansion joint drainage structure according to claim 2, characterized in that, The water collecting component has a first ear plate portion on both sides corresponding to the cantilever component, and the first ear plate portion has the suspension hole.

4. A bridge expansion joint drainage structure according to claim 3, characterized in that, The water collecting component has a second ear plate on both sides, and a receiving groove is opened on the side of the second ear plate near the water collecting tank. The magnetic component is locked in the receiving groove.

5. A bridge expansion joint drainage structure according to claim 4, characterized in that, The first ear plate portion and the second ear plate portion located on the same side of the water collection component are alternately arranged along the width direction of the steel box girder.

6. A bridge expansion joint drainage structure according to claim 1, characterized in that, The cantilever member is a threaded rod; a row of threaded holes is provided on the end face of the steel box girder on both sides of the bridge expansion joint, and the row of threaded holes on the steel box girder is arranged along the width direction of the steel box girder; the rod is screwed into the threaded hole, and the water collection member is suspended on the rod through the suspension hole.

7. A bridge expansion joint drainage structure according to claim 6, characterized in that, An anti-loosening washer is provided between the rod and the threaded hole.

8. A bridge expansion joint drainage structure according to claim 1, characterized in that, The cantilever is inclined upward so that the cantilever end of the cantilever is higher than the end of the cantilever that connects to the end face of the steel box girder.

9. A bridge expansion joint drainage structure according to claim 1, characterized in that, The water collection component is made of rubber.

10. A bridge expansion joint drainage structure according to any one of claims 1-9, characterized in that, A drainage ditch is provided near the edge of the top of the bridge, and the drainage ditch extends along the length of the bridge; rainwater collected by the drainage ditch falls into the water collection ditch at the bridge expansion joint.

Images