A side discharge rectangular culvert structure for highway bridges
By embedding L-shaped steel drainage pipes into the bridge railings and equipping them with filter baskets and counterweight balls, the problem of unstable bridge drainage pipe connections was solved, thereby improving the bridge's durability and enhancing its drainage effect.
Patent Information
- Application Number
- CN202522038246.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-23
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-23
AI Technical Summary
The existing drainage pipes of highway bridges are not connected to the bridges in an unstable manner, which leads to water seepage on the bridge surface, causing seepage and efflorescence, and reducing the structural durability.
The L-shaped steel drainage pipe is embedded in the bridge railing and equipped with a filter basket and counterweight ball to form a side-discharge rectangular drainage pipe structure, which enhances connection stability and impurity filtration capacity.
It effectively prevents water seepage on the bridge surface, reduces leakage from drainage holes, improves bridge durability, enhances drainage effect, and simplifies the construction process.
Smart Images
Figure CN224678517U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of highway bridge drainage technology, specifically a side-discharge rectangular drainage pipe structure for highway bridges. Background Technology
[0002] Bridge deck drainage design is an important part of bridge design and the foundation for bridge engineering. It not only affects the construction of bridges but also directly relates to their practicality.
[0003] In existing highway bridges, drainage pipes are generally installed on the outside of the side beams. The drainage holes and drainage pipes are connected by post-cast concrete, and no connecting parts are installed between them. They are connected only by the chemical bond force of the concrete.
[0004] However, in the existing technology, when the vehicle load causes bridge vibration during operation, leading to connection failure or insufficient compaction of the post-poured concrete, gaps exist between the drainage holes and drainage pipes. As a result, water on the bridge surface seeps along the gaps to the bridge flanges and webs, and these parts commonly suffer from water seepage and efflorescence, which seriously reduces the structural durability. Therefore, in order to address the above problems, a side-drainage rectangular drainage pipe structure for highway bridges is proposed. Utility Model Content
[0005] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, this utility model proposes a side-discharge rectangular drainage pipe structure for highway bridges.
[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A side-drainage rectangular drainage pipe structure for highway bridges, comprising an L-shaped steel drainage pipe; a bridge railing is provided on the left side of the beam, and the L-shaped steel drainage pipe is embedded in the railing by casting; two layers of asphalt pavement are provided above the beam, and a gravel blind drain is provided between the first layer of asphalt pavement and the L-shaped steel drainage pipe; the gravel blind drain is arranged along the longitudinal direction of the bridge, and a fiberglass grid is provided above the gravel blind drain; a grid-type drainage pipe cover is provided on the side of the L-shaped steel drainage pipe near the gravel blind drain; a blind drain filter wire mesh is provided between the grid-type drainage pipe cover and the asphalt pavement layer; one end of the L-shaped steel drainage pipe is integrated with the gravel blind drain by installing the grid-type drainage pipe cover; a blind drain filter wire mesh is installed between the L-shaped steel drainage pipe and the gravel blind drain; the other end of the L-shaped steel drainage pipe is connected to a vertical drainage pipe through a funnel-shaped connector.
[0007] Preferably, the inner wall of the L-shaped steel drain pipe is provided with a filter screen hopper; multiple elastic rods are fixedly connected to the side wall of the filter screen hopper; the elastic rods are evenly distributed on the side wall of the filter screen hopper and have the same structure; a counterweight ball is fixedly connected to the end of the elastic rod.
[0008] Preferably, an installation block is fixedly connected to the inner wall of the L-shaped steel drain pipe; a slot is provided on the side wall of the installation block; a fixing block is fixedly connected to the side wall of the filter screen bucket; the fixing block and the slot are in sliding fit; a groove is provided on the side wall of the fixing block; a spring is fixedly connected to the side wall of the groove; and an insert is fixedly connected to the end of the spring.
[0009] Preferably, the groove sidewall has a through hole; the insert block sidewall is fixedly connected to a pull rope; the pull rope passes through the filter screen wall and is slidably connected to it; and a pull ring is fixedly connected to the end of the pull rope.
[0010] Preferably, a pair of elastic plates are symmetrically fixed to the sidewall of the pull ring; the elastic plates are arranged in an arc shape.
[0011] Preferably, the sidewall of the counterweight ball is fixed with a rubber sleeve.
[0012] The beneficial effects of this utility model are:
[0013] 1. This utility model provides a side-discharge rectangular drainage pipe structure for highway bridges. The L-shaped steel drainage pipe is embedded in the concrete bridge railing, preventing gaps between the drainage holes and the main beam caused by various factors during bridge operation. This prevents water accumulation on the bridge surface from draining along the outer contour of the drainage holes, fundamentally solving the problem of water seepage and efflorescence in the main beam concrete caused by leakage from the bridge drainage holes, thus improving bridge durability. The installation of the L-shaped steel drainage pipe is carried out simultaneously with the bridge railing construction, requiring only positioning and installation on site. Compared with the original bridge design, it basically does not increase the amount of work and speeds up the construction progress.
[0014] 2. This utility model provides a side-discharge rectangular drainage pipe structure for highway bridges. By setting a filter basket, the L-shaped steel drainage pipe can increase the interception and filtration effect of small particle impurities during drainage, reduce the residue of impurities in the L-shaped steel drainage pipe, and thus increase the drainage effect of the L-shaped steel drainage pipe. At the same time, the counterweight ball can also play a role in preventing the filter basket from clogging during filtration and increase the fluidity of water flow. Attached Figure Description
[0015] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:
[0016] Figure 1 This is a structural diagram of the side-discharge rectangular drain pipe of this utility model;
[0017] Figure 2 yes Figure 1 A magnified view of a portion of the image;
[0018] Figure 3 This is a perspective view of the L-shaped steel drain pipe in this utility model;
[0019] Figure 4 This is a perspective view of the grille-type drain pipe cover in this utility model;
[0020] Figure 5 This is a perspective view of the present invention;
[0021] Figure 6 This is a perspective view of the beam body in this utility model;
[0022] Figure 7 This is a perspective view of the filter basket in this utility model;
[0023] Figure 8 This is a perspective view of the elastic rod in this utility model;
[0024] Figure 9 yes Figure 8 Enlarged view of a portion of point A in the middle.
[0025] Legend:
[0026] 1. L-shaped steel drainage pipe; 11. Bridge railing; 12. Beam; 13. Crushed stone blind drain; 14. Fiberglass grating; 15. Asphalt pavement layer; 16. Grating-type drainage pipe cover; 17. Blind drain filter wire mesh; 2. Filter hopper; 21. Elastic rod; 22. Counterweight ball; 3. Mounting block; 31. Slot; 32. Fixing block; 33. Groove; 34. Spring; 35. Insert block; 4. Through hole; 41. Pull rope; 42. Pull ring; 5. Elastic sheet; 6. Rubber sleeve. Detailed Implementation
[0027] 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 skilled in the art without creative effort are within the protection scope of the present utility model.
[0028] Specific implementation examples are given below.
[0029] Please see Figures 1-9This utility model provides a side-discharge rectangular drainage pipe structure for highway bridges, including an L-shaped steel drainage pipe 1; a bridge railing 11 is provided on the left side of the beam 12, and the L-shaped steel drainage pipe 1 is embedded in the bridge railing 11 by casting; two layers of asphalt pavement 15 are provided above the beam 12, and a gravel blind drain 13 is provided between the first layer of asphalt pavement 15 and the L-shaped steel drainage pipe 1; the gravel blind drain 13 is arranged along the longitudinal direction of the bridge, and a fiberglass grid 14 is provided above the gravel blind drain 13; a grid-type drainage pipe cover 16 is provided on the side of the L-shaped steel drainage pipe 1 near the gravel blind drain 13; the grid-type drainage pipe cover 16... A blind drain filter wire mesh 17 is installed between the water pipe cover 16 and the asphalt pavement layer 15; one end of the L-shaped steel drain pipe 1 is installed with a grid-type drain pipe cover 16 and integrally formed with the crushed stone blind drain 13; a blind drain filter wire mesh 17 is installed between the L-shaped steel drain pipe 1 and the crushed stone blind drain 13; the other end of the L-shaped steel drain pipe 1 is connected to the vertical drainage pipe through a funnel-shaped joint; in use, after the beam 12 is erected, the concrete bridge railing 11 reinforcement is constructed, the L-shaped steel drain pipe 1 is installed, and attention is paid to welding and positioning with the railing reinforcement; the top surface of the L-shaped steel drain pipe 1 has a slope of not less than 2%, and then the railing is installed. For the guardrail template, rectangular holes are pre-reserved in the outer formwork during template customization. The guardrail concrete is poured to ensure that the L-shaped steel drainage pipe 1 is embedded within the bridge guardrail 11 concrete. The bridge deck waterproofing layer is then constructed, followed by the laying of the first layer of asphalt intermediate layer. A gravel blind drain 13 is then formed by sawing, filled with graded gravel with a mud content not exceeding 2%. Before filling the gravel blind drain 13, a blind drain filter wire mesh 17 is installed on one side of the grid-type drainage pipe cover 16. After the first layer of asphalt pavement 15 is completed, a fiberglass grid 14 is laid continuously above the gravel blind drain 13, followed by the laying of the second layer of asphalt surface layer. Care should be taken to reserve the gravel blind drain 13 when laying the first layer of asphalt concrete on the bridge deck. The trench was filled with graded crushed stone, and L-shaped steel drainage pipes 1 were laid out along the bridge direction at intervals of 5.3 meters. During this process, the L-shaped steel drainage pipes 1 were embedded in the concrete bridge railings 11, which prevented gaps between the drainage holes and the main beams caused by various factors during bridge operation. This prevented water from accumulating on the bridge surface and draining along the outer contour of the drainage holes, fundamentally solving the problem of water seepage and efflorescence in the main beam concrete caused by leakage of the bridge drainage holes, and improving the durability of the bridge. The installation of L-shaped steel drainage pipes 1 was carried out simultaneously with the construction of the bridge railings 11. Only positioning and installation were required on site. Compared with the original bridge design, it did not increase the amount of work and accelerated the construction progress.
[0030] Furthermore, such as Figures 1-9As shown, the inner wall of the L-shaped steel drain pipe 1 is provided with a filter screen hopper 2; multiple elastic rods 21 are fixedly connected to the side wall of the filter screen hopper 2; the elastic rods 21 are evenly distributed on the side wall of the filter screen hopper 2 and have the same structure; a counterweight ball 22 is fixedly connected to the end of the elastic rod 21; in use, when the accumulated water carrying small particulate impurities is discharged into the L-shaped steel drain pipe 1 through the grid-type drain pipe cover 16, the filter screen hopper 2 can filter the small particulate impurities in the accumulated water, and the filter screen hopper 2 blocks the small particulate impurities, while at the same time, the water flow... Under impact, the elastic rod 21 can cause the counterweight ball 22 to swing, causing the counterweight ball 22 to continuously strike the wall of the filter screen hopper 2. The vibration of the strike can shake off the impurities attached to the holes of the filter screen hopper 2. In this process, the L-shaped steel drain pipe 1 can be enhanced to intercept and filter smaller particles of impurities during drainage, reducing the residue of impurities in the L-shaped steel drain pipe 1, thereby increasing the drainage effect of the L-shaped steel drain pipe 1. At the same time, the counterweight ball 22 can also play a role in preventing clogging of the filter screen hopper 2 during filtration, increasing the fluidity of the water flow.
[0031] Furthermore, such as Figures 1-9 As shown, an installation block 3 is fixedly connected to the inner wall of the L-shaped steel drain pipe 1; a slot 31 is provided on the side wall of the installation block 3; a fixing block 32 is fixedly connected to the side wall of the filter screen 2; the fixing block 32 and the slot 31 are in sliding fit; a groove 33 is provided on the side wall of the fixing block 32; a spring 34 is fixedly connected to the side wall of the groove 33; an insert block 35 is fixedly connected to the end of the spring 34; in use, when the filter screen 2 is placed into the L-shaped steel drain pipe 1, a certain amount of force can be applied to the filter screen 2. The force causes the fixing block 32 to be inserted into the side wall of the slot 31. At this time, the insert block 35 will be squeezed into the groove 33 by the mounting block 3 and squeeze the spring 34. When the insert block 35 moves to the corresponding position of the slot 31, the elasticity of the spring 34 can push the insert block 35 into the side wall of the slot 31, thus fixing the filter screen 2. In this process, the installation of the filter screen 2 can be made more convenient, the practicality of the filter screen 2 can be improved, and the workload caused by the cumbersome installation can be reduced.
[0032] Furthermore, such as Figures 1-9 As shown, the side wall of the groove 33 has a through hole 4; the side wall of the insert block 35 is fixedly connected to a pull rope 41; the pull rope 41 passes through the wall of the filter basket 2 and is slidably connected to it; the end of the pull rope 41 is fixedly connected to a pull ring 42; in use, by hooking the pull ring 42 with a finger and pulling it, the pull rope 41 drives the insert block 35 to move, and the fixing block 32 can be pulled out from the side wall of the slot 31 to disassemble the filter basket 2. In this process, it can facilitate the disassembly of the filter basket 2, improve the cleaning of impurities in the filter basket 2, thereby increasing the practicality of the filter basket 2 in use and increasing the disassembly speed of the filter basket 2.
[0033] Furthermore, such as Figures 1-9 As shown, a pair of elastic pieces 5 are symmetrically fixed to the side wall of the pull ring 42; the elastic pieces 5 are arranged in an arc shape; when in use, when a finger hooks the pull ring 42 and pulls it, the finger will push the elastic pieces 5 on both sides open. At this time, the elasticity of the elastic pieces 5 will apply a certain reaction force to the finger and squeeze the finger. In this process, it can play a role in preventing the finger from falling off when hooking the pull ring 42 and increasing the firmness between the finger and the pull ring 42, thereby improving the convenience of operating the pull ring 42.
[0034] Furthermore, such as Figures 1-9 As shown, a rubber sleeve 6 is fixed to the side wall of the counterweight ball 22. In use, when the counterweight ball 22 strikes the wall of the filter basket 2, the rubber sleeve 6 can be placed between the two to protect the filter basket 2 with its own flexibility. In this process, it can protect the counterweight ball 22 from the wall of the filter basket 2, reduce the damage caused by the counterweight ball 22, and thus increase the service life of the filter basket 2 and improve the filtration effect.
[0035] Working principle: After the beam 12 is erected, the reinforcing steel of the concrete bridge railing 11 is installed, and the L-shaped steel drainage pipe 1 is installed. Care is taken to weld and position it with the railing reinforcing steel. The top surface of the L-shaped steel drainage pipe 1 has a slope of not less than 2%. Then, the railing formwork is installed. Rectangular holes are pre-drilled in the outer formwork during formwork customization. The railing concrete is poured, ensuring that the L-shaped steel drainage pipe 1 is embedded in the concrete of the bridge railing 11. The bridge deck waterproofing layer is then constructed. After laying the first layer of asphalt intermediate layer, a gravel blind drain 13 is formed by sawing. It is filled with graded gravel with a mud content of no more than 2%. Before filling the gravel blind drain 13, the grid-type drainage pipe cover 1 is first installed. 6. Install a blind drain filter wire mesh 17 on one side. After the first layer of asphalt pavement 15 is completed, lay a fiberglass grid 14 along the entire length above the crushed stone blind drain 13, and then lay the second layer of asphalt surface layer. When laying the first layer of asphalt concrete on the bridge deck, pay attention to reserving a groove for the crushed stone blind drain 13, and backfill the groove with graded crushed stone. The L-shaped steel drainage pipes 1 are laid at intervals of 5.3 meters along the bridge direction. When the accumulated water carrying small particulate impurities is discharged into the L-shaped steel drainage pipe 1 through the grid-type drainage pipe cover 16, the filter screen 2 can filter the small particulate impurities in the accumulated water and block the small particulate impurities. Simultaneously, under the impact of the water flow, the elastic rod 21 can cause the counterweight ball 22 to swing, causing the counterweight ball 22 to continuously strike the wall of the filter screen hopper 2. The vibration from the striking can shake off the impurities attached to the holes of the filter screen hopper 2. In use, when the filter screen hopper 2 is placed into the L-shaped steel drain pipe 1, a certain force can be applied to the filter screen hopper 2, causing the fixing block 32 to be inserted into the side wall of the slot 31. At this time, the insertion block 35 will be squeezed by the mounting block 3 and slide into the groove 33, squeezing the spring 34. When the insertion block 35 moves to the corresponding position in the slot 31, the elasticity of the spring 34 can push the insertion block 35 into the slot. The filter basket 2 can be fixed on the side wall of the slot 31. In use, by hooking the pull ring 42 with your finger and pulling it, the pull rope 41 drives the insertion block 35 to move, and the fixing block 32 can be pulled out from the side wall of the slot 31 to disassemble the filter basket 2. In use, when the finger hooks the pull ring 42 and pulls it, the finger will push open the elastic plates 5 on both sides. At this time, the elasticity of the elastic plates 5 will apply a certain reaction force to the finger and squeeze the finger. In use, when the counterweight ball 22 hits the wall of the filter basket 2, the rubber sleeve 6 can be placed between the two to protect the filter basket 2 with its own flexibility.
[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A side-drainage rectangular drainage pipe structure for highway bridges, comprising an L-shaped steel drainage pipe (1); characterized in that: A bridge railing (11) is provided on the left side of the beam (12), and the L-shaped steel drainage pipe (1) is embedded in the bridge railing (11) by casting. Two layers of asphalt pavement (15) are provided above the beam (12). A gravel blind drain (13) is provided between the first layer of asphalt pavement (15) and the L-shaped steel drainage pipe (1). The gravel blind drain (13) is arranged along the longitudinal direction of the bridge. A fiberglass grid (14) is provided above the gravel blind drain (13). A grid-type drainage pipe cover (16) is provided on the side of the L-shaped steel drainage pipe (1) near the gravel blind drain (13). A blind drain filter wire mesh (17) is provided between the cover (16) and the asphalt pavement layer (15); one end of the L-shaped steel drain pipe (1) is installed with a grid-type drain pipe cover (16) and the crushed stone blind drain (13) in an integral structure; a blind drain filter wire mesh (17) is installed between the L-shaped steel drain pipe (1) and the crushed stone blind drain (13); the other end of the L-shaped steel drain pipe (1) is connected to the vertical drain pipe through a funnel-shaped joint.
2. The side-discharge rectangular drainage pipe structure for highway bridges as described in claim 1, characterized in that: The inner wall of the L-shaped steel drain pipe (1) is provided with a filter screen hopper (2); a plurality of elastic rods (21) are fixedly connected to the side wall of the filter screen hopper (2); the elastic rods (21) are evenly distributed on the side wall of the filter screen hopper (2) and have the same structure; a counterweight ball (22) is fixedly connected to the end of the elastic rod (21).
3. The side-discharge rectangular drainage pipe structure for highway bridges as described in claim 2, characterized in that: An installation block (3) is fixed to the inner wall of the L-shaped steel drain pipe (1); a slot (31) is provided on the side wall of the installation block (3); a fixing block (32) is fixed to the side wall of the filter screen (2); the fixing block (32) and the slot (31) are in sliding fit; a groove (33) is provided on the side wall of the fixing block (32); a spring (34) is fixed to the side wall of the groove (33); and an insert (35) is fixed to the end of the spring (34).
4. The side-discharge rectangular drainage pipe structure for highway bridges as described in claim 3, characterized in that: The groove (33) has a through hole (4) on its side wall; the insert (35) has a pull rope (41) fixedly connected to its side wall; the pull rope (41) passes through the wall of the filter screen (2) and is slidably connected to it; the end of the pull rope (41) has a pull ring (42) fixedly connected to it.
5. The side-discharge rectangular drainage pipe structure for highway bridges as described in claim 4, characterized in that: A pair of elastic plates (5) are symmetrically fixed to the side wall of the pull ring (42); the elastic plates (5) are arranged in an arc shape.
6. The side-discharge rectangular drainage pipe structure for highway bridges as described in claim 2, characterized in that: A rubber sleeve (6) is fixed to the side wall of the counterweight ball (22).