Anti-seepage and anti-sprinkling beam transverse water drain pipe for bridge

Abstract

The utility model provides an anti-seepage and anti-sprinkling beam transverse water drain pipe for a bridge. In order to solve the problem that drainage of an existing horizontal drainage pipe is prone to deviating and eroding a bridge structure, horizontal distribution of a water outlet of a bridge floor drainage pipe is changed into connection of a vertical section and an inclined section through a bent section, and therefore the drainage direction is vertically deviated from the inner side of a bridge and inclines downwards. The discharged water is prevented from deviating to erode web plates and bottom plates of the upper structure under the action of wind power, the maintenance cost of the upper structure caused by water erosion is reduced, the structural durability is improved, the bridge floor water is prevented from being discharged out of the road land use range, the problem that the transverse water drainage pipe of the bridge drains water to flush the ground is solved, and the social benefit is improved.

Description

Technical Field

[0001] This utility model relates to the field of bridge drainage systems, and in particular to a transverse drainage pipe for bridge anti-seepage and anti-drenching beams. Background Technology

[0002] The main function of the transverse drainage pipes of the bridge is to drain the water collected on the bridge deck and the interlayer water in the bridge deck pavement to the outside of the bridge in a timely manner, so as to ensure the safety of traffic on the bridge deck and prevent the water on the bridge deck and the interlayer water from eroding the superstructure of the bridge.

[0003] During operation, water seepage from the drainage pipes and the gaps between them and the bridge beams erodes the superstructure's web and bottom slabs, causing severe damage such as steel reinforcement corrosion, rust expansion and cracking of the concrete cover, and corrosion of the drainage pipes themselves. The main reason for this problem is that the horizontal drainage pipes extend relatively little beyond the superstructure, and the discharged water, under the influence of wind, may tend to erode the superstructure's web and bottom slabs. Furthermore, when the water volume on the bridge deck is large, the water flow from the horizontal drainage pipes is fast, potentially flowing beyond the road land area. During construction, large-diameter holes are usually reserved during the pouring of the bridge deck's cast-in-place layer and the guardrail base, and the drainage pipes are inserted later. The gap between the drainage pipe and the reserved hole at the inlet is sealed with water. However, during operation, this sealing is prone to failure, allowing water from the bridge deck to seep through the gaps between the drainage pipes and the bridge beams. The transverse drainage pipes are made of cast iron, which is corroded by bridge deck water over long-term operation, easily leading to rust. The horizontal drainage pipe is an auxiliary structure. Due to the construction period constraints, it will also affect the connection between the drainage pipe and the guardrail base and the cast-in-place layer of the bridge deck, as well as the quality of water sealing. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by providing a transverse drainage pipe for bridge anti-seepage and anti-drenching beams. The horizontal distribution of the bridge deck drainage pipe outlets is changed to a system where curved sections connect vertical and inclined sections, thus directing the drainage direction vertically downwards towards the inner side of the bridge. This prevents the discharged water from being deflected by wind and eroding the superstructure's web and bottom plate, reducing maintenance costs for water erosion damage to the superstructure, improving structural durability, and preventing bridge deck water from flowing beyond the highway land area. This solves the problem of water erosion from bridge transverse drainage pipes and improves social benefits.

[0005] To achieve the above objectives, the following technical solution is adopted:

[0006] It includes inclined sections, vertical sections, curved sections, transverse sections and gratings distributed sequentially along its axis. A pavement layer is arranged above the beam. The transverse sections are arranged at the edge of the pavement layer and extend beyond the pavement layer. The end of the transverse section away from the curved section serves as the inlet end of the drainage pipe. The inclined sections are connected to the vertical sections, and the axis of the inclined sections is inclined relative to the axis of the vertical sections. The gratings can be detachably installed at the inlet end. A water collection trough is provided on the pavement layer and is recessed on its surface. The water collection trough is connected to the drainage pipe through the inlet end.

[0007] Furthermore, an annular groove is provided on the outer circumferential wall of the transverse section of the drain pipe, and the annular groove is used for the paving layer and guardrail concrete to be fitted and fixed.

[0008] Furthermore, the annular groove is opened circumferentially along the drain pipe, and multiple annular grooves are provided, which are arranged sequentially at intervals along the axial direction of the transverse section of the drain pipe.

[0009] Furthermore, the axis of the transverse segment is perpendicular to the axis of the vertical segment, the end of the vertical segment away from the curved segment is connected to the inclined segment, and the end of the inclined segment away from the vertical segment is inclined towards the side closer to the transverse segment and extends below the bottom edge of the beam.

[0010] Furthermore, the gate cover is a mesh structure with an array of mesh openings.

[0011] Furthermore, the periphery of the gate cover is provided with a threaded portion or a sealing ring. The gate cover is connected to a pre-set threaded portion at the end of the transverse section away from the curved section through the threaded portion, or the gate cover is connected to the end of the transverse section away from the curved section through the sealing ring.

[0012] Furthermore, the pavement layer includes a concrete pavement layer and an asphalt concrete pavement layer, with the concrete pavement layer located between the asphalt concrete pavement layer and the top surface of the beam.

[0013] Furthermore, the transverse section fits into the bottom of the water collection trough, and the side of the water collection trough near the edge of the pavement layer is connected to one end of the transverse section where the grid cover is installed.

[0014] Furthermore, the side of the water collection trough away from the edge of the pavement layer is an inclined sidewall, and the bottom surface of the water collection trough is flush with the bottom of the interior of the transverse section.

[0015] Furthermore, the top surface of the pavement layer is sloped, and the height of the top surface of the pavement layer gradually decreases along the direction from the centerline to the edge.

[0016] Compared with the prior art, the advantages and positive effects of this utility model are:

[0017] To address the issue that current horizontal drainage pipes tend to erode bridge structures, the horizontal distribution of the bridge deck drainage pipe outlets will be changed to a system where curved sections connect to vertical and inclined sections. This will cause the drainage direction to be vertically biased towards the inner side of the bridge and angled downwards. This will prevent the discharged water from being deflected by wind and eroding the superstructure's web and bottom plate, reducing maintenance costs for water erosion damage to the superstructure, improving structural durability, and preventing bridge deck water from flowing beyond the highway land area. This will solve the problem of water erosion from bridge transverse drainage pipes and improve social benefits.

[0018] The outer wall of the drainage pipe is provided with annular grooves distributed in a circumferential direction, and multiple drainage pipes are arranged at intervals along the axis. The drainage pipes are pre-embedded before concrete pouring to ensure a tight bond between them and the concrete, preventing water from seeping through the drainage pipes and the beams and eroding the superstructure, thus improving the structural durability. Attached Figure Description

[0019] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0020] Figure 1 This is a schematic diagram of the transverse drainage pipe of the anti-seepage and anti-drenching beam for bridges in this embodiment of the present invention.

[0021] Figure 2 This is a schematic diagram of the drain pipe in an embodiment of this utility model.

[0022] Figure 3 for Figure 2 A schematic diagram of point A in the middle.

[0023] Figure 4 This is a schematic diagram of the grille cover in an embodiment of the present invention.

[0024] In the diagram, 1 is the beam; 2 is the drainage pipe; 3 is the grating cover; 4 is the pavement layer; 5 is the curved section; 6 is the vertical section; 7 is the horizontal section; 8 is the annular groove; and 9 is the inclined section. Detailed Implementation

[0025] In a typical embodiment of this utility model, such as Figures 1-4 As shown, a transverse drainage pipe for a bridge anti-seepage and anti-drenching beam is proposed.

[0026] Currently, due to the relatively small extension of horizontal drainage pipes beyond the superstructure, the discharged water, under wind force, easily tends to erode the web and bottom slab of the superstructure. Therefore, this embodiment provides a transverse drainage pipe for a bridge's waterproof and leak-proof beam. By changing the drainage direction, this situation is avoided, preventing the drainage from causing erosion damage to the bridge superstructure. When the water volume on the bridge deck is large, the water flow from the horizontal drainage pipe is relatively fast and may flow beyond the highway land area. This embodiment adjusts the drainage path so that a large amount of drainage flows vertically downwards along the inner side of the bridge, preventing drainage beyond the specified range, reducing water erosion damage to the superstructure, and lowering the cost of maintenance and repair for these damages.

[0027] like Figure 1 As shown, the main structure of the transverse drainage pipe of the bridge seepage-proof and rainproof beam is the drainage pipe 2. The drainage pipe 2 is arranged along the edge of the pavement layer 4, and the pavement layer 4 is distributed on the top surface of the beam 1.

[0028] The drainage pipe 2 is a curved pipe, comprising an inclined section 9, a vertical section 6, a curved section 5, a transverse section 7, and a grate 3 arranged sequentially along its axis. The transverse section 7 is located along the edge of the pavement layer 4 and extends beyond the pavement layer 4. The end of the transverse section 7 furthest from the curved section 5 serves as the inlet end of the drainage pipe 2. The inclined section 9 connects to the vertical section 6, and the axis of the inclined section 9 is inclined relative to the axis of the vertical section 6. The grate 3 can be detachably installed at the inlet end. The pavement layer 4 has a water collection trough recessed on its surface. The water collection trough connects to the drainage pipe 2 through the inlet end, allowing water on the pavement layer 4 to enter the water collection trough and then flow into the drainage pipe 2, from which it is discharged. This makes the drainage direction vertically inclined downwards towards the inside of the bridge.

[0029] The drainage pipe 2 adopts a curved structure, which changes the traditional horizontal drainage method. The vertical section 6 guides the drainage vertically downward into the inclined section 9. The inclined section 9 changes the drainage direction to be biased towards the inside of the bridge and downward. This fundamentally solves the problems of water being biased towards the upper structure under the action of wind and water flowing too fast to be discharged outside the highway land area. The curved section 5 plays a role in reasonably connecting the vertical section 6 and the horizontal section 7, ensuring that the water flow can be smoothly transitioned. The horizontal section 7 is arranged on the edge of the pavement layer 4 to receive water from the collection tank. The whole system works together to achieve the optimized drainage path.

[0030] The end of the transverse section 7 furthest from the curved section 5 serves as the inlet end of the drain pipe 2, and a detachable grate cover 3 is installed at the inlet end. The inlet end serves as the part that receives water from the bridge deck, and its position is designed to facilitate connection with the water collection trough for water collection. The detachable grate cover 3 has multiple functions: on the one hand, it can prevent large debris from entering the drain pipe 2 and causing blockage, ensuring smooth drainage; on the other hand, it facilitates later cleaning, maintenance, and inspection of the internal condition of the drain pipe 2.

[0031] In addition, the transverse section 7 of the drain pipe 2 was changed from the original oblique arrangement to a parallel arrangement with the top surface of the beam 1, which facilitated the layout operation during construction, enabled construction personnel to more accurately determine the position of the drain pipe, improved the accuracy of drain pipe positioning, and also simplified the construction steps, improved the convenience of construction, and helped to shorten the construction cycle and ensure construction quality.

[0032] The pavement layer 4 is provided with a water collection trough recessed on its surface. The water collection trough is connected to the drain pipe 2 through the inlet end. The water collection trough can collect water from different locations on the bridge surface, play a role in the initial collection and concentration of water flow, and then guide the water into the drain pipe 2 in an orderly manner, ensuring that the water on the entire bridge surface can be effectively collected and discharged through the drain pipe 2, avoiding water accumulation and disorderly drainage on the bridge surface.

[0033] like Figure 2 and Figure 3As shown, an annular groove 8 is formed on the outer circumferential wall of the transverse section 7 of the drainage pipe 2. The annular groove 8 provides a secure fit between the pavement layer 4 material and the guardrail concrete. This utilizes the filling characteristics of the materials during the construction of the pavement layer 4 and the guardrail concrete. When the pavement layer 4 is laid and the guardrail concrete is poured, the material flows into the annular groove 8. After it solidifies, it is equivalent to adding multiple fixing points in the horizontal direction to the transverse section 7 of the drainage pipe 2. This effectively restricts the lateral displacement of the drainage pipe 2 during use, ensuring its stable position during bridge operation. This further ensures the stability of the drainage structure and prevents the drainage effect or the tightness of the connection with other structures from being affected by changes in the position of the drainage pipe 2 due to external forces or other factors.

[0034] In addition, the annular groove 8 increases the bonding force between the drainage pipe 2 and the concrete. After the concrete is poured, the two can be tightly bonded together, effectively preventing water from the bridge deck from seeping into the gaps between the drainage pipe 2 and the pavement layer 4 and the guardrail concrete. This avoids erosion of the superstructure due to water seepage, improves the durability of the bridge structure, and ensures the long-term stable operation of the bridge.

[0035] Annular grooves 8 are formed around the drainage pipe 2 in a circumferential direction. Multiple annular grooves 8 are arranged sequentially and at intervals along the axial direction of the transverse section 7 of the drainage pipe 2. The circumferential arrangement ensures that there are limiting structures that bond with the pavement layer 4 and the guardrail concrete in the circumferential direction, resulting in more uniform stress distribution. The axially spaced arrangement of multiple annular grooves 8 increases the number of limiting points, fixing the transverse section 7 from different positions and dispersing the influence of potential external forces, such as vibrations from vehicle movement and structural expansion and contraction caused by temperature changes. This further enhances the stability of the transverse section 7 of the drainage pipe 2 within the pavement layer 4 and the guardrail concrete, improving the reliability of the entire drainage structure.

[0036] The axis of the transverse segment 7 is perpendicular to the axis of the vertical segment 6. The end of the vertical segment 6 away from the curved segment 5 connects to the inclined segment 9. The end of the inclined segment 9 away from the vertical segment 6 slopes towards the transverse segment 7 and extends below the bottom edge of the beam 1. This allows the drainage direction to smoothly change from transverse collection to vertical downward flow into the inclined segment 9. It ensures that after passing through the curved segment 5, the water flows vertically downward through the vertical segment 6 into the inclined segment 9, and is guided by the inclined segment 9 to be discharged inclined towards the inside of the bridge. This ensures that the discharged water is completely away from the superstructure of the bridge, avoiding the risk of erosion of the web and bottom plate of the superstructure by drainage, protecting the bridge structure, and ensuring the durability of the bridge.

[0037] like Figure 4As shown, the grate cover 3 is a mesh structure with an array of mesh openings. The mesh structure of the grate cover 3 effectively prevents larger debris from entering the drain pipe 2, thus preventing debris accumulation and drainage blockage, without excessively obstructing the normal flow of water. The array of mesh openings allows water to pass evenly through the grate cover 3 into the drain pipe 2, ensuring smooth drainage. Simultaneously, this mesh distribution facilitates filtration of incoming water from different locations, more effectively intercepting various possible debris and contributing to the stable operation of the subsequent drainage system.

[0038] The periphery of the grille cover 3 is provided with a threaded portion or a sealing ring. The grille cover 3 mates with a pre-set threaded portion at the end of the transverse section 7 away from the curved section 5 via the threaded portion, or the grille cover 3 mates with the end of the transverse section 7 away from the curved section 5 via the sealing ring. Using a threaded or sealing ring connection to connect the grille cover 3 to the transverse section 7 offers advantages such as convenient installation, a secure connection, and detachability. When it is necessary to clean, replace, or inspect the internal condition of the drain pipe 2, the grille cover 3 can be easily removed by unscrewing, making the operation simple and convenient. Moreover, the threaded or sealing ring connection is relatively tight, which can, to a certain extent, prevent the grille cover 3 from accidentally falling off due to vibration or other reasons during normal use, ensuring its stability and reliability during use.

[0039] Pavement layer 4 comprises a concrete pavement layer and an asphalt concrete pavement layer, with the concrete pavement layer located between the asphalt concrete pavement layer and the top surface of beam 1. This layered structure combines the advantages of both concrete and asphalt concrete. The lower concrete pavement layer provides good strength support for the entire pavement layer 4, bearing the pressure from loads such as vehicles on the bridge deck and ensuring the structural stability of pavement layer 4. The upper asphalt concrete pavement layer, with its good smoothness and anti-skid properties, provides comfortable road conditions and sufficient friction for vehicle travel, ensuring driving safety. It also provides some protection to the lower concrete pavement layer, extending the service life of pavement layer 4.

[0040] like Figure 1 As shown, the transverse section 7 fits snugly against the bottom of the water collection trough, and the side of the water collection trough near the edge of the pavement layer 4 connects to one end of the transverse section 7 where the grid cover 3 is installed. The transverse section 7's fit snugly against the bottom of the water collection trough allows water collected in the trough to flow naturally into the transverse section 7 under gravity, eliminating the need for additional guiding devices and ensuring smooth water collection and introduction. The connection between the water collection trough and the end of the transverse section 7 where the grid cover 3 is installed facilitates the direct delivery of water collected in the trough to the drain pipe 2, making efficient use of structural space, optimizing the drainage path, and ensuring the entire drainage process is orderly and efficient.

[0041] The side of the water collection trough furthest from the pavement layer 4 edges has an inclined sidewall, and the bottom surface of the trough is flush with the bottom of the transverse section 7. This inclined sidewall helps guide water from different locations on the bridge deck to the bottom of the trough near the transverse section 7, improving water collection efficiency and preventing water from stagnating and failing to drain promptly. The flush design of the bottom surface of the trough with the bottom of the transverse section 7 ensures that water can flow unimpeded from the trough into the transverse section 7, achieving a smooth transition between the two structures and further guaranteeing the continuity and smoothness of drainage.

[0042] The top surface of pavement layer 4 is sloped, gradually decreasing in height along its centerline to the edge. This conforms to basic drainage principles, utilizing gravity to guide water on the bridge deck naturally towards the edge, collecting in the collection trough and then draining through the drainage pipe 2. The well-designed slope ensures that water is collected systematically across the entire bridge deck, preventing water accumulation and improving overall drainage efficiency. It is a crucial component in ensuring the smooth collection and discharge of water within the transverse drainage pipes of the bridge's waterproof and leak-proof beams.

[0043] In this embodiment, the material of the drain pipe 2 has been changed from the original cast iron pipe to a PVC-U pipe or a fiber-reinforced plastic sand-filled pipe. The drainage direction has also been redesigned, changing the outlet from horizontal to a vertical bend that angles downwards towards the inside of the bridge, and ensuring that the outlet end of the drain pipe 2 extends below the bottom edge of the beam. The inlet end blocking structure of the drain pipe 2 has been changed from multiple Φ8 inserted steel bars to a grid cover 3. This avoids the problem of steel bars easily corroding due to long-term exposure to a humid environment and being difficult to replace later. This facilitates routine maintenance and repair of the drain pipe 2, reduces the difficulty and cost of later maintenance, ensures the normal operation of the drain pipe 2 throughout its service life, and improves the reliability and maintainability of the drainage system.

[0044] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A water seepage prevention and downpour beam transverse drain pipe for a bridge, characterized by, The beam body is provided with a pavement layer above, the transverse section is arranged at the edge of the pavement layer, the transverse section extends out of the pavement layer, one end of the transverse section away from the curved section serves as an inlet end of the drain pipe, the inclined section is communicated with the vertical section, and the axis of the inclined section is inclinedly distributed relative to the axis of the vertical section, the inlet end is detachably installed with the grating cover, the pavement layer is provided with a water collecting groove recessed in the surface thereof, and the water collecting groove is communicated with the drain pipe through the inlet end.

2. The watertight and deluge-proof beam transverse drain pipe for a bridge according to claim 1, wherein An annular groove is formed in the outer circumferential wall of the transverse section of the drain pipe, and the annular groove is used for embedding and fixing the pavement layer and the guardrail concrete.

3. The watertight and deluge-proof beam transverse drain pipe for a bridge according to claim 2, characterized by, The annular groove is formed in the circumferential direction of the drain pipe, and a plurality of annular grooves are arranged in the axial direction of the transverse section of the drain pipe in sequence.

4. The water seepage prevention and shower beam transverse drain pipe for bridge as claimed in claim 2 or 3, characterized in that, The axis of the transverse section is perpendicular to the axis of the vertical section, one end of the vertical section away from the curved section is communicated with the inclined section, one end of the inclined section away from the vertical section is inclined to the side close to the transverse section, and extends below the bottom edge of the beam body.

5. The watertight and deluge-proof beam transverse drain pipe for a bridge according to claim 1, wherein The grating cover is in a mesh plate structure, and a plurality of meshes are arranged in an array on the grating cover.

6. The watertight and deluge-proof beam transverse drain pipe for a bridge according to claim 5, wherein A threaded portion or a sealing ring is arranged on the circumferential edge of the grating cover, the grating cover is butted against the threaded portion prearranged at one end of the transverse section away from the curved section through the threaded portion, or the grating cover is butted against one end of the transverse section away from the curved section through the sealing ring.

7. The watertight and deluge-proof beam transverse drain for bridges according to claim 1, characterized in that, The pavement layer includes a concrete pavement layer and an asphalt concrete pavement layer, and the concrete pavement layer is located between the asphalt concrete pavement layer and the top surface of the beam body.

8. The watertight and deluge beam transverse drain for bridges of claim 1, characterized in that, The transverse section is attached to the bottom of the water collecting groove, and one end of the water collecting groove close to the edge of the pavement layer is communicated with the grating cover installed on the transverse section.

9. The watertight and deluge-proof beam transverse drain pipe for a bridge according to claim 8, characterized by, The side of the water collecting groove away from the edge of the pavement layer is an inclined side wall, and the bottom surface of the water collecting groove is flush with the inner bottom end of the transverse section.

10. The watertight and deluging beam transverse drain pipe for a bridge according to claim 1, wherein The top surface of the pavement layer is distributed in a slope, and the height of the top surface of the pavement layer gradually decreases in the direction from the center line of the pavement layer to the edge.

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