External drainage structure of a bridge

Abstract

External drainage structure of a bridge, including: a channel (2), wherein the channel (2) is connected to a bridge (7) via a connecting device (1); wherein the channel (2) further comprises a channel body (201) and a channel cover (202) which can be opened; and a drainage pipe (3), wherein the drainage pipe (3) is a PVC pipe; and the drainage pipe (3) is arranged in the channel (2).

Description

Technical field

[0001] The present utility model relates to the technical field of an auxiliary structure in bridge construction and in particular to an external drainage structure of a bridge. Technical background

[0002] When a road bridge must cross an underlying railway line or a river or lake that serves as a drinking water source, the water from the roadway drainage system of the bridge should generally not be allowed to flow directly under the bridge. If a railway line is located under a road bridge, direct drainage can lead to damage to the railway infrastructure, such as corrosion of the rails, signaling equipment, etc., which compromises the safety of railway operations. Water diverted from roads can contain various contaminants such as oils, heavy metals, waste, salts, etc., which, if discharged directly into rivers or lakes, can lead to serious water pollution and compromise the safety of drinking water downstream, as well as the ecological environment.

[0003] To prevent drainage of the road bridge deck directly beneath the bridge, bridge drainage systems are typically used to channel rainwater and wastewater from the road into horizontal drainage pipes. These pipes are positioned along the bridge's direction of travel and at the bottom of the slope, avoiding the railway line and the drinking water protection zone below. Therefore, if the railway line or drinking water protection zone is located beneath the road bridge, a long horizontal section of drainage pipe is installed. The drainage pipe has a large capacity. In general, composite steel pipes, stainless steel pipes, or thickened PVC pipes are most commonly used as drainage pipes, which are attached beneath the bridge wing deck.

[0004] In current technology, the quality of PVC pipe when used as a drainage pipe is low, although it is somewhat more practical compared to the installation and construction of composite steel and stainless steel pipes. However, because PVC pipe is exposed to the elements and environmental influences over a long period, it can be easily damaged and ages, leading to durability issues. Furthermore, if the PVC pipe is sheathed, it is not conducive to repair and replacement, resulting in inconvenience during subsequent maintenance and increased maintenance costs. Summary of the utility model

[0005] The purpose of the present utility model is to provide an external drainage structure for a bridge in order to overcome the shortcomings of the prior art in which a horizontal drainage pipe of the bridge is arranged directly with an exposed PVC pipe, which causes the PVC pipe to be easily damaged and to age, and in which the PVC pipe is sealed and protected, which makes the PVC pipe difficult to overhaul and replace.

[0006] The present utility model provides for an external drainage structure for a bridge, comprising: a channel, wherein the channel is connected to a bridge via a connecting device; the channel further comprises a channel body and a channel cover that can be opened; and a drainage pipe, wherein the drainage pipe is a PVC pipe; and the drainage pipe is arranged in the channel.

[0007] The bridge is equipped with an external drainage structure, and the connecting device firmly links the channel to the main bridge structure. The channel comprises a channel body and a channel cover. The drainage pipe can be inserted into the channel body from an opening. When the channel cover is closed, the opening of the channel body is covered, creating a relatively enclosed space within the channel. Therefore, the channel provides better physical protection for the drainage pipe, preventing damage from external forces and addressing the issue of the drainage pipe being easily damaged.At the same time, the channel can also shield against direct sunlight, preventing the PVC pipe from being exposed to the sun for extended periods. This exposure to ultraviolet radiation damages the molecular structure of the pipe's materials, leading to cracks on the surface of the PVC pipe and gradual aging. During maintenance, the channel cover can be opened to facilitate inspection and repair of the drainage pipe inside the channel. The drainage pipe can also be removed and replaced as needed, saving on maintenance costs.

[0008] Preferably, the canal is connected below the bridge by the connecting device.

[0009] Preferably the channel body has a U-shaped cross-section and the inside of the channel body is straight or curved.

[0010] Preferably, the connecting device comprises: a plurality of connecting brackets spaced apart longitudinally along the bridge; wherein the connecting bracket is connected to the bridge via a first end plate and a first fastening element; and the connecting bracket is connected to the channel via a second end plate and a second fastening element.

[0011] Preferably, the outside of the duct is wrapped with a tape to secure the duct body and the duct cover.

[0012] Preferably, the first fastening element is a high-strength bolt or a tension bolt and the second fastening element is a bolt or a self-tapping screw.

[0013] Preferably, the connecting bracket is L-shaped; a vertical section of the connecting bracket is connected to a side surface of the bridge; and a horizontal section of the connecting bracket serves to support the channel, and an inclined strut is connected between the vertical section and the horizontal section.

[0014] Preferably the connecting bracket is an angle steel; the cross-sectional thickness of the connecting bracket is 3-6 mm; the longitudinal side bridge width of the connecting bracket is 20-60 mm; and the first end plate and the second end plate are 4-8 mm thick galvanized steel plates.

[0015] Preferably the channel has a cross-sectional size of 70 mm × 70 mm - 200 mm × 200 mm; the channel body is a bent component made of stainless steel sheet with a thickness of 2 - 4 mm; and the channel cover is a bent component made of stainless steel sheet with a thickness of 2 - 4 mm.

[0016] Preferably, each of the above-mentioned drainage pipes is a PVC pipe with a diameter of 80-200 mm.

[0017] Compared to the prior art, the present utility model offers the following advantages. 1. The utility model provides a channel for laying a drainage pipe, wherein the drainage pipe is physically protected by the channel, so that the drainage pipe is effectively protected and preserved from damage caused by external influences. 2. The channel provided by the present utility model serves to insulate the direct sunlight on the drainage pipe, thereby effectively reducing the ultraviolet radiation on the drainage pipe, thus extending the service life of the drainage pipe and preventing its premature aging. 3. The channel provided by the present utility model comprises a channel body and a channel cover. The channel cover allows for easy opening and closing of the channel body, which facilitates maintenance and replacement of the drainage pipe and thus effectively reduces maintenance costs. Brief description of the drawings Fig. Figure 1 is a schematic representation of an external drainage structure of a bridge of the present utility model. Fig. Figure 2 is a schematic representation of a channel and a drainage pipe in an external drainage structure of a bridge of the present utility model. Fig. Figure 3 is a front view of a connecting device in an external drainage structure of a bridge according to the present utility model. Fig. Figure 4 is a side view of a connecting device in an external drainage structure of a bridge of the present utility model. Reference symbol: 1 connecting device, 101 Connecting bracket 102 first end plate, 103 second end plate 2-channel 201 channel bodies, 202 Channel cover, 3 drainage pipes, 4 first fastening, 5 second fastening, Volume 6, 7 Bridge. Detailed description

[0018] The present utility model is described in more detail below with reference to the experimental examples and specific embodiments. However, it should not be assumed that the scope of the subject matter of the present utility model described above is limited to the following examples, and it is intended that the present utility model falls within the scope of the present utility model.

[0019] In the description of the specific embodiments of this utility model, the terms "top", "bottom", "left", "right", "middle", "inside", "outside", and the like, unless otherwise specified, refer to expressions based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship in which the product / device / equipment of this utility model is normally used. These orientation or positional relationship terms are used solely to facilitate the description of aspects of this utility model or to simplify the description of specific embodiments for the person skilled in the art, enabling them to quickly understand these aspects.They do not mean or imply that a particular device / part / element must have a particular orientation or be designed and operated in a particular positional relationship, and should therefore not be construed as a limitation of the present utility model.

[0020] Furthermore, the presence of terms such as "horizontal," "vertical," "overhanging," "parallel," and the like does not mean that the respective device / component / element must be absolutely horizontal or vertical, overhanging, or parallel, but rather that it may be slightly inclined or offset. If "horizontal" merely means that its direction is more horizontal than "vertical," this does not mean that the structure must be completely horizontal, but rather that it may be slightly inclined. Alternatively, it can simply be assumed that the respective means / parts / elements arranged in "horizontal," "vertical," "overhanging," "parallel," etc., orientations may be arranged with an error / deviation of ±10%, preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4% relative to the respective direction.As long as the relevant device / part / element is within the error / deviation range, its function in the solution of the present utility model can still be fulfilled.

[0021] Furthermore, the terms “first”, “second”, “third” and the like are used in such expressions merely to distinguish between descriptions of the same or similar elements, and are not to be understood as emphasizing or implying a relative importance of the respective element.

[0022] Furthermore, in the description of the embodiments of the present utility model, "some," "a multitude," and "several" mean at least two. There can be 2, 3, 4, 5, 6, 7, 8, 9, etc., and there can be more than 9.

[0023] Furthermore, unless expressly stated / restricted / limited otherwise, the terms "provide," "fasten," "connect," "link," "provide with," "place," and "arrange" in the description of the technical solution of this utility model are to be understood in a broader sense. For example, it may be a permanent connection, a detachable connection, or an integral connection, and it may be a fastener commonly used in the trade, such as welding, riveting, bolting, screwing, etc. The connection may be a mechanical connection, an electrical connection, or a communication connection. They may be connected directly or indirectly via an intermediate medium, and communication may take place between the two elements. Design 1

[0024] As in the Fig. 1 and Fig. As shown in Figure 2, an external drainage structure of a bridge comprises a connecting device 1, a channel 2 and a drainage pipe 3.

[0025] Channel 2 is stably connected to the main structure of a bridge 7 via a connecting device 1. Channel 2 further comprises a channel body 201, which has an opening that can be oriented upwards, and a channel cover 202, which is located at the opening position of the channel body 201 and can be opened and closed. During construction, the drainage pipe 3 can be inserted into the channel body 201 through the opening position of the channel body 201 when the channel cover 202 is open. After the installation of the drainage pipe 3 is complete, the channel cover 202 is closed to cover the opening of the channel body 201, so that the interior of channel 2 forms a relatively enclosed space. During subsequent maintenance work, the channel cover 202 can be opened again to service the drainage pipe 3.If the drainage pipe 3 is damaged, it can be repaired or replaced, etc. The presence of the channel body 201 and the channel cover 202 not only protects the drainage pipe 3 from damage caused by external influences and direct sunlight, but also facilitates maintenance in a later maintenance phase.

[0026] Drainage pipe 3 is a PVC pipe, and drainage pipe 3 is located in channel 2. The length of the PVC pipe can range from 3 m to 10 m, and the specific lengths can be 3 m, 6 m, and 10 m. Adhesive joints can be used between multiple PVC pipes.

[0027] In an alternative embodiment, the channel 2 is connected to the underside of the main structure of the bridge 7 by means of the connecting device 1, thereby making efficient use of the lower space of the bridge 7. The channels 2 are arranged longitudinally in the direction of the traffic lanes of the bridge 7.

[0028] In an alternative embodiment, the channel body 201 has a U-shaped cross-section, and the inner surface of its base can be flat or curved. If the inner surface of the channel body 201 is flat, the inner wall of the channel body 201 can be adapted to the drainage pipe 3 as closely as possible to reduce lateral movement of the drainage pipe 3. If the inner surface of the channel body 201 is curved, rolling of the drainage pipe 3 in the channel 2 can be effectively prevented.

[0029] In an alternative embodiment, as in Fig. As shown in Figure 2, the outside of the duct 2 is sheathed with a band 6 to secure the duct body 201 and the duct cover 202. This band 6 can be a self-locking nylon cable tie or a stainless steel metal band. The band 6 surrounds the duct body 201 and the duct cover 202. When the band 6 is tightened, it secures the duct cover 202 against falling. During maintenance, the band 6 can be loosened, and the duct cover 202 can be opened for subsequent maintenance or replacement work. The duct cover 202 and the duct body 201 can also be fitted with a bayonet connection to allow for quick installation and removal, thus saving time and labor costs.

[0030] In one or more embodiments, as described in the Fig. 1, Fig. 3 and Fig.As shown in Figure 4, the connecting device 1 comprises a number of connecting brackets 101 arranged at intervals along the longitudinal direction of the bridge 7, with each connecting bracket 101 being positioned at intervals of 2-3 m. The connecting bracket 101 is connected to the bridge 7 by means of a first end plate 102 and a first fastening device 4, and the connecting bracket 101 is connected to the channel 2 by means of a second end plate 103 and a second fastening device 5. The first end plate 102 can increase the contact area between the connecting bracket 101 and the bridge 7, thereby improving the connection effect. The second end plate 103 can increase the contact area between the connecting bracket 101 and the channel 2, thereby making the fastening of the channel 2 more stable.

[0031] In alternative embodiments, the first fastening element 4 can be a high-strength bolt or an expansion bolt, and the second fastening element 5 can be a bolt or a self-tapping screw. The first fastening element 4 can also be a set of high-strength screws and a pre-embedded sleeve welded to the reinforcing bars of the main structure of the bridge 7 before the concrete of the bridge 7 is poured.

[0032] In an alternative embodiment, the connecting bracket 101 can be L-shaped, with a vertical section of the connecting bracket 101 connected to the side of the main structure of the bridge 7, and a lateral section of the connecting bracket 101 serving to hold the channel 2. The lateral section is oriented towards the inside of the bridge 7 to position the channel 2 under the projection of the bridge 7. Inclined struts can be arranged between the vertical and the horizontal sections of the connecting bracket 101 to improve the stability of the connecting bracket 101.

[0033] In an alternative embodiment, the connecting bracket 101 can be an angle iron, and the cross-sectional thickness of the connecting bracket 101 can be 3 to 6 mm. In particular, the cross-sectional thickness can be 3 mm, 5 mm, or 6 mm. The longitudinal bridge width of the connecting bracket 101 can be 20 to 60 mm, with the width being particularly 20 mm, 50 mm, or 60 mm. The connecting bracket 101 can be hot-dip galvanized, thus providing better corrosion resistance and extending its service life. The angle iron is easy to cut and weld, allowing the connecting bracket 101 to be mass-produced in a factory, reducing on-site work steps and improving construction efficiency.

[0034] In an alternative embodiment, the cross-sectional size of channel 2 can range from 70 mm x 70 mm to 200 mm x 200 mm. The channel body 201 can be a bent component made of stainless steel sheet with a thickness of 2 to 4 mm. The specific thickness of the channel body 201 can be 2 mm, 3 mm, or 4 mm. The channel cover 202 can be a bent stainless steel plate with a thickness of 2–4 mm, and the specific thickness of the channel cover 202 can be 2 mm, 3 mm, or 4 mm. The stainless steel plate material is lightweight, easy and quick to process, and well-suited for mass production in a factory. It has good corrosion resistance and is conducive to the construction and protection of the drainage pipe 3 within channel 2. The length of each channel 2 can be 3 m to 6 m, and the specific length of each channel 2 can be either 3 m or 6 m. Welded or riveted connections can be used between each channel 2.

[0035] In an alternative embodiment, the first end plate 102 and the second end plate 103 can be galvanized steel sheets 4 to 8 mm thick, and the thickness of the end plates can be, in particular, 4 mm, 5 mm, or 8 mm. The use of galvanized steel sheet can increase the corrosion resistance of the end plate and extend its service life. The first end plate 102 and the second end plate 103 can be welded to the connecting bracket 101.

[0036] In an alternative embodiment, the drainage pipe 3 can be a PVC pipe with a diameter of 80 to 200 mm. In particular, the PVC pipe diameters can be 80 mm, 100 mm or 200 mm.

[0037] The foregoing are only preferred embodiments of the utility model and are not intended to restrict the utility model. All modifications, equivalents, and improvements within the meaning and scope of the principles of the utility model shall fall within the scope of this utility model.

[0038] This utility model relates to an external drainage pipe construction for bridge building, and in particular to an external drainage construction for a bridge. The external drainage construction comprises a channel and a drainage pipe, the channel being connected to a bridge via a connecting device; and the channel further comprising a channel body and an opening channel cover. The drainage pipe is a PVC pipe and is located within the channel. The channel can provide better physical protection for the drainage pipe, prevent damage to the drainage pipe from external forces, and solve the problem of the drainage pipe being easily damaged.

[0039] The channel insulates against direct sunlight, preventing the PVC pipe from being exposed to it for extended periods. This exposure to ultraviolet radiation damages the molecular structure of the pipe material, leading to cracks on the surface and gradual aging. During maintenance, the channel cover can be opened to facilitate inspection and maintenance of the drainage pipe within the channel. The drainage pipe can also be removed and replaced as needed, thus reducing maintenance costs.

Claims

[1] External drainage structure of a bridge, comprising: a channel (2), wherein the channel (2) is connected to a bridge (7) via a connecting device (1); wherein the channel (2) further comprises a channel body (201) and a channel cover (202) which can be opened; and a drainage pipe (3), wherein the drainage pipe (3) is a PVC pipe; and the drainage pipe (3) is arranged in the channel (2). [2] External drainage structure of a bridge according to claim 1, characterized by , that the canal (2) under the bridge (7) is connected by the connecting device (1). [3] External drainage structure of a bridge according to claim 2, characterized by , that the channel body (201) is U-shaped in cross-section; and the inner bottom of the channel body (201) is straight or curved. [4] External drainage structure of a bridge according to claim 3, characterized by, that the connecting device (1) comprises: a plurality of connecting brackets (101) spaced apart longitudinally along the bridge (7); wherein the connecting bracket (101) is connected to the bridge (7) via a first end plate (102) and a first fastening element (4); and the connecting bracket (101) is connected to the channel (2) via a second end plate (103) and a second fastening element (5). [5] External drainage structure of a bridge according to claim 4, characterized by , that the outside of the channel (2) is sheathed with a band (6) for fastening the channel body (201) and the channel cover (202). [6] External drainage structure of a bridge according to claim 4, characterized by , that the first fastening element (4) is a high-strength bolt or an expansion bolt and the second fastening element (5) is a bolt or a self-tapping screw. [7] External drainage structure of a bridge according to claim 4, characterized by , that the connecting bracket (101) is L-shaped; a vertical section of the connecting bracket (101) is connected to a side surface of the bridge (7); and a horizontal section of the connecting bracket (101) is used to support the channel (2), and an inclined strut is connected between the vertical section and the horizontal section. [8] External drainage structure of a bridge according to claim 4, characterized by , that the connecting bracket (101) is an angle steel; the cross-sectional thickness of the connecting bracket (101) is 3 to 6 mm; the longitudinal bridge width of the connecting bracket (101) is 20 to 60 mm; and the first end plate (102) and the second end plate (103) are 4 to 8 mm thick galvanized steel plates. [9] External drainage structure of a bridge according to claim 4, characterized by, that the channel (2) has a cross-sectional size of 70 mm * 70 mm to 200 mm * 200 mm; the channel body (201) is a curved component made of stainless steel sheet with a thickness of 2 to 4 mm; and the channel cover (202) is a curved component made of stainless steel sheet with a thickness of 2 to 4 mm. [10] External drainage structure of a bridge according to any one of claims 1 to 9, characterized by , that the drainage pipe (3) is a PVC pipe with a diameter of 80 to 200 mm.

Images