A drainage device suitable for median guardrails on superelevated bridge sections

Abstract

This utility model relates to the field of drainage technology for median guardrails on bridges, specifically a drainage device suitable for median guardrails on ultra-high sections of bridges. It includes several piers, with a beam pavement layer on top of every two piers. A median guardrail is fixed on top of each beam pavement layer. A front-end sump is provided at the connection point of every two median guardrails, with a collection well fixed inside the sump. A drain pipe is fixed at the rear end of each collection well, and a longitudinal collection pipe is provided at the rear end of each drain pipe. An air inlet pipe is provided at the rear end of each longitudinal collection pipe, and a spiral blade is provided inside each drain pipe. By using drain pipes pre-embedded in the beam support layer, the problem of drainage failure at the median guardrail of a small box girder bridge on an ultra-high section is solved.

Description

Technical Field

[0001] This utility model belongs to the field of drainage technology for median guardrails on bridges, specifically a drainage device suitable for median guardrails on superelevated sections of bridges. Background Technology

[0002] Precast assembled small box girders are a common superstructure used in urban elevated roads. At curves on urban elevated roads, superelevation is installed on the bridge deck, resulting in a unidirectional cross slope. For bridges with median railings, due to the unidirectional cross slope, rainwater collects at the median railing. During heavy rainstorms, rainwater must be drained through pre-installed drainage holes to prevent flooding.

[0003] However, the existing drainage method involves reserving transverse drainage holes in the median strip to divert rainwater from the higher half of the bridge to the lower half, where it is discharged through drainage holes pre-embedded on the outer side of the lower half. This increases the drainage pressure on the lower side, and when drainage is not smooth, rainwater will accumulate there. Furthermore, the existing method involves pre-laying and embedding vertical drainage holes during the prefabrication of the small box girders, and then draining the water under the bridge through collection wells at the bottom of the guardrail. This method requires high precision in the pre-embedding and positioning of the drainage holes in the prefabricated small box girders, and the vertical penetration of the drainage holes through the small box girders makes actual installation extremely inconvenient. Therefore, this invention designs a drainage device suitable for the median strip guardrail of ultra-high bridge sections to solve the above problems. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the prior art, this utility model provides a drainage device suitable for the median guardrail of the bridge superelevation section, which effectively solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a drainage device suitable for median guardrails in superelevation sections of bridges, comprising several beam pavement layers, a median guardrail fixed to the top of each beam pavement layer, a front-end water collection pit at the front end of every two median guardrail connections, a rear-end water collection pit at the rear end of every two beam pavement layers, a water collection well fixed inside the front-end and rear-end water collection pits, a water collection well cover tightly fitted to the top of each water collection well, a drain pipe fixed to the rear end of each front-end water collection well, a rear-end water outlet pipe fixed to the bottom of each rear-end water collection well, an elbow at the rear end of each drain pipe, a longitudinal water collection pipe at the bottom of each elbow, an air inlet pipe at the rear end of each longitudinal water collection pipe, a rotating shaft inside each drain pipe, and a spiral blade fixed to the outside of each rotating shaft.

[0006] Preferably, a precast small box girder is tightly attached to the bottom of each beam pavement layer, a beam support layer is tightly attached to the top of each precast small box girder, each beam support layer is fixedly connected to the beam pavement layer above it, and two external guardrails are fixed to the top of each beam support layer.

[0007] Preferably, each of the longitudinal water collection pipes, each of the drain pipes, each of the air inlets and each of the elbows is detachably connected to a protective ring on the outside; each of the air inlets and each of the drain pipes is provided with a cast-in-place baffle on the outside; each of the air inlets is provided with an air inlet protective sleeve on the outside; a filter disc is fixed to the outer end of each of the air inlets; each of the drain pipes is fastened to the elbow at its rear end by a top flange; and each of the elbows is fastened to the longitudinal water collection pipe at its bottom by a lower flange.

[0008] Preferably, each of the water collection well covers is fixed with several support rods on top, and each water collection well cover is fastened to the water collection well at its bottom by bolts.

[0009] Preferably, each drain pipe has two connecting strips fixed inside, each connecting strip has an external positioning tube fixed at its bottom, each external positioning tube is tightly fitted with its internal rotating shaft, each spiral blade is tightly fitted with the drain pipe, each rotating shaft has a protective bucket fixed at its rear end, and each protective bucket is tightly fitted with the connecting strip at its rear end.

[0010] Compared with the prior art, the beneficial effects of this utility model are: This invention facilitates the drainage of rainwater from the front of the median barrier through a front-end collection pit and a rear-end collection pit for the rear of the beam pavement. An elbow ensures efficient rainwater transport, and an air inlet pipe supplies the necessary air to the longitudinal collection pipe, increasing the internal air pressure and facilitating rainwater drainage. The inclination angles of the precast box girder, beam pavement, and beam pavement ensure smooth rainwater transport to the collection wells, improving drainage efficiency. This device avoids the need to embed vertical drainage pipes in the precast box girder, ensuring construction quality. The drainage pipes are laid after the box girder is erected, offering high construction flexibility and allowing for easy position adjustments during construction, accelerating progress. It also prevents rainwater from flowing from the higher half of the bridge deck to the lower half, reducing drainage pressure on the lower half. By embedding drainage pipes in the beam support layer, it solves the problem of drainage failure at the median barrier of small box girder bridges in ultra-high sections.

[0011] This utility model facilitates the collection of rainwater through a collection well. The collection well cover filters out large impurities in the rainwater. The support rod ensures that there is a gap at the top of the collection well cover, so that when large impurities cover the top of the support rod, there is a cavity in the through hole of the collection well cover, thus preventing large impurities from clogging the collection well cover and ensuring drainage effect. At the same time, due to the rear outlet pipe, it is convenient to transport rainwater inside the rear collection well, thus ensuring drainage efficiency and accuracy.

[0012] This invention uses spiral blades to transport rainwater and sludge from inside the drain pipe, thereby ensuring the cleanliness of the drain pipe and extending its service life. This also ensures effective drainage. The protective hopper prevents sludge from entering the rear external positioning pipe, thus ensuring the safety of the rear external positioning pipe and extending the overall service life of the device. Attached Figure Description

[0013] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0014] In the attached diagram: Figure 1 This is a schematic diagram of the overall design of this utility model; Figure 2 This is a schematic diagram of the overall bottom of this utility model; Figure 3 This is a schematic diagram of the top of the beam of this utility model; Figure 4 This is a schematic diagram of the left end of the entire utility model; Figure 5 This is a schematic cross-sectional view of the beam of this utility model; Figure 6 This is a cross-sectional view of the casting component of this utility model; Figure 7 This is a schematic diagram of the top of the water collection well of this utility model; Figure 8 This is a schematic diagram of the external appearance of the air intake pipe protective sleeve of this utility model; Figure 9 This is a schematic diagram of the internal structure of the drain pipe of this utility model; Figure 10 This is a schematic diagram of the internal front end of the drain pipe of this utility model; Figure 11 This is a schematic diagram of the internal rear end of the drain pipe of this utility model; Figure 12 This is a schematic diagram of the interior of the external positioning tube of this utility model.

[0015] In the diagram: 1-Beam support layer; 2-Water collection well cover; 3-Rear end water collection pit; 4-Cast-in-place partition; 5-Cast-in component; 6-Front end water collection pit; 7-Rotating shaft; 101-External guardrail; 102-Precast small box girder; 103-Beam pavement layer; 104-Median guardrail; 201-Support rod; 202-Water collection well; 203-Bolt; 301-Rear end water outlet pipe; 401-Longitudinal water collection pipe; 402-Air inlet pipe protective sleeve; 403-Filter disc; 404-Air inlet pipe; 405-Flange; 406-Drain pipe; 407-Protective ring; 408-Elbow; 701-Helical blade; 702-External positioning pipe; 703-Connecting strip; 704-Protective bucket. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0017] Example 1, by Figures 1-5 , Figures 8-9The present invention comprises several beam pavement layers 103, each pavement layer 103 being constructed of asphalt material. A median strip guardrail 104 is fixed to the top of each beam pavement layer 103, enabling the beam pavement layer 103 to form a two-way road. A front-end water collection pit 6 is provided at the front end of every two median strip guardrails 104, facilitating the drainage of rainwater from the front end of the median strip guardrail 104. A rear-end water collection pit 3 is provided at the rear end of every two beam pavement layers 103, facilitating the drainage of rainwater from the rear end of the beam pavement layer 103. A water collection well 202 is fixed inside both the front-end water collection pit 6 and the rear-end water collection pit 3. The water collection wells 202 are made of alloy material and are designed for convenient rainwater collection. Each water collection well 202 has a water collection well cover 2 tightly fitted to its top. The water collection well cover 2 is also made of alloy material and is used to filter large impurities from the rainwater. A drain pipe 406, made of alloy material, is fixed to the rear end of each water collection well 202. The drain pipe 406 has an angle of 2°-3° with the horizontal plane and is used to supply the required rainwater to the longitudinal water collection pipe 401. A rear outlet pipe 301, also made of alloy material, is fixed to the bottom of each water collection well 202 at the rear end. 01 is used to drain rainwater from the rear collection well 202. Each drain pipe 406 has an elbow 408 at its rear end, which is made of alloy material. The elbow 408 ensures effective rainwater transport. Each elbow 408 has a longitudinal water collection pipe 401 at its bottom, which is also made of alloy material. The longitudinal water collection pipe 401 facilitates rainwater drainage. Each longitudinal water collection pipe 401 has an air inlet pipe 404 at its rear end, which is also made of alloy material. The air inlet pipe 404 supplies the necessary air to the longitudinal water collection pipe 401, thereby increasing the internal air pressure and facilitating rainwater drainage. The drain pipe 406 has a rotating shaft 7 inside, which is made of alloy material. The rotating shaft 7 is used to position the spiral blades 701. Each rotating shaft 7 has a spiral blade 701 fixed to its exterior. The spiral blades 701 are also made of alloy material. The spiral blades 701 are used to transport rainwater and sludge inside the drain pipe 406 at the same time, thereby ensuring the cleanliness of the inside of the drain pipe 406, thus improving the service life of the drain pipe 406 and ensuring the drainage effect. The water collection well cover 2, the water collection well 202, the support rod 201, the drain pipe 406, the longitudinal water collection pipe 401, and the air inlet pipe 404 are all treated with anti-corrosion.

[0018] Example 2, based on Example 1, combined with... Figures 6-7 , Figures 10-12Each beam pavement layer 103 has a prefabricated small box girder 102 tightly attached to its bottom. The prefabricated small box girder 102 is prefabricated. A beam support layer 1 is tightly attached to the top of each prefabricated small box girder 102, supporting the beam pavement layer 103. The angle between the top of the prefabricated small box girder 102, the beam support layer 1, and the beam pavement layer 103 and the horizontal plane is 2°-3°. Each beam support layer 1 is fixedly connected to the beam pavement layer 103 above it. Two external guardrails 101 are also fixed to the top of each beam support layer 1, protecting the front and rear ends of the beam pavement layer 103. Each longitudinal water collection pipe 401 and each drainage pipe 40... 6. Each of the air inlet pipes 404 and each of the elbows 408 is detachably connected to a protective ring 407. The protective ring 407 is made of foam material and ensures the safety of the longitudinal water collection pipe 401, the air inlet pipe 404, and the drain pipe 406. Each of the air inlet pipes 404 and each of the drain pipes 406 is provided with a cast-in-place baffle 4. The cast-in-place baffle 4 ensures the stability of the longitudinal water collection pipe 401 and the drain pipe 406. Each air inlet pipe 404 is provided with an air inlet pipe protective sleeve 402, which ensures the stability of the air inlet pipe 404. A filter disc 403 is fixed to the outer end of each air inlet pipe 404. The filter disc 403 is made of alloy material. The filter disc 403 is constructed to filter large impurities from the air. Each drain pipe 406 is fastened to its rear elbow 408 via a top flange 405, and each elbow 408 is fastened to its bottom longitudinal water collection pipe 401 via a lower flange 405. Several support rods 201 are fixed to the top of each water collection well cover 2. The support rods 201 have a cylindrical structure and are made of alloy material. The support rods 201 ensure that there are gaps at the top of the water collection well cover 2, thus ensuring that when large impurities cover the top of the support rods 201, there is a cavity within the through-hole of the water collection well cover 2, preventing large impurities from clogging the water collection well cover 2 and ensuring drainage efficiency. Each of the water collection well covers 2 and its bottom water collection well 202 is fastened together by bolts 203. Two connecting strips 703, made of alloy material, are fixed inside each drain pipe 406. These connecting strips 703 are used to position the external positioning pipe 702. An external positioning pipe 702, also made of alloy material, is fixed to the bottom of each connecting strip 703 and is used to position the rotating shaft 7. Each external positioning pipe 702 is tightly fitted to its internal rotating shaft 7. Each spiral blade 701 is tightly fitted to the drain pipe 406. A protective bucket 704, with a funnel-shaped structure, is fixed to the rear end of each rotating shaft 7.The protective hopper 704 is made of alloy material. It prevents sludge from inside the drain pipe 406 from entering the rear external positioning pipe 702, thus ensuring the safety of the rear external positioning pipe 702 and improving the service life of the entire device. Each protective hopper 704 is tightly fitted to its rear connecting strip 703. The rotating shaft 7, the spiral blade 701, the external positioning pipe 702, and the connecting strip 703 are all treated with anti-corrosion measures. Before using this device, the workers tighten the elbows 408 at the top of each longitudinal water collection pipe 401 using flanges 405, further tighten the drain pipes 406 at the front end of each elbow 408, further fix the water collection wells 202 at the front end of the drain pipes 406, and further fit the protective rings 407 onto the outside of each longitudinal water collection pipe 401, each air inlet pipe 404, each drain pipe 406, and each elbow 408. At this time, the workers fix the support frames on the top of the piers, further install the precast small box girders 102 on the top of several support frames, and further fix the beam support layer 1 on the top of each precast small box girder 102. At this time, the workers fix the beam support layer 1 on every two beams. The drain pipes 406 are installed between the support layers 1. At this time, each water collection well cover 2 is located inside the front water collection pit 6 at one end. The workers then use bolts 203 to secure the water collection well cover 2 to the water collection well 202. Next, the workers install the rear water collection well 202 inside the rear water collection pit 3, and simultaneously fix the rear outlet pipe 301 at the bottom of the rear water collection well 202. Further, the workers pour the cast-in-place partition 4 outside the drain pipes 406 and the longitudinal water collection pipes 401. Further, the workers pour the air inlet pipe protective sleeve 402 outside the air inlet pipe 404. Further, the workers pour the casting component 5 on top of the cast-in-place partition 4. Further, the work... Personnel lay the beam paving layer 103 on top of the beam support layer 1. When it rains, rainwater at the rear end of the median strip guardrail 104 flows into the rear collection well 202 due to the slope of the beam paving layer 103, and is then discharged through the rear outlet pipe 301. Rainwater at the front end of the median strip guardrail 104 flows into the front collection well 202. The support rod 201 prevents the collection well cover 2 from clogging, ensuring water delivery. The rainwater in the collection well 202 is then transported to the drain pipe 406. The slope of the drain pipe 406 allows the rainwater to move within it. The spiral blade 701 rotates, thereby driving the rotating shaft 7 to rotate. The connecting strip 703 and the external positioning tube 702 facilitate the rotation of the rotating shaft 7. Furthermore, the spiral blade 701 transports rainwater to the rear end of the drain pipe 406, then to the elbow 408, and finally discharges it through the longitudinal water collection pipe 401. If there is sludge inside the drain pipe 406, the rotation of the spiral blade 701 transports the sludge to the rear end of the drain pipe 406, ensuring effective rainwater transport. The protective hopper 704 prevents sludge from clogging the rear external positioning tube 702, thus ensuring effective drainage.

[0019] The working process of this utility model is as follows: Before using this device, the worker tightens the elbow 408 at the top of each longitudinal water collection pipe 401 using flange 405, further tightens the drain pipe 406 at the front end of each elbow 408, further fixes the water collection well 202 at the front end of the drain pipe 406, and further fits the protective ring 407 on the outside of each longitudinal water collection pipe 401, each air inlet pipe 404, each drain pipe 406, and each elbow 408. At this time, the worker fixes the support frame on the top of the pier, further installs the precast small box girder 102 on the top of several support frames, and further fixes the beam support layer 1 on the top of each precast small box girder 102. At this time, the worker... Workers install the drain pipe 406 between every two beam support layers 1. At this time, each water collection well cover 2 is located inside the front water collection pit 6 at one end. Workers then use bolts 203 to secure the water collection well cover 2 to the water collection well 202. Next, workers install the rear water collection well 202 inside the rear water collection pit 3, and simultaneously fix the rear outlet pipe 301 at the bottom of the rear water collection well 202. Further, workers pour the cast-in-place partition 4 outside the drain pipe 406 and the longitudinal water collection pipe 401, and further pour the air inlet pipe protective sleeve 402 outside the air inlet pipe 404. Finally, workers pour the casting component 5 on top of the cast-in-place partition 4. Furthermore, workers lay the beam paving layer 103 on top of the beam support layer 1. When it rains, rainwater at the rear end of the median strip guardrail 104 flows into the rear collection well 202 due to the slope of the beam paving layer 103, and is then discharged through the rear outlet pipe 301. Rainwater at the front end of the median strip guardrail 104 flows into the front collection well 202. The support rod 201 prevents the collection well cover 2 from clogging, ensuring water delivery. The rainwater in the collection well 202 is then transported to the drain pipe 406. The slope of the drain pipe 406 allows the rainwater to move within it. The spiral blades 701 rotate, causing the shaft 7 to rotate. The connecting strip 703 and the external positioning tube 702 facilitate the rotation of the shaft 7. Furthermore, the spiral blades 701 transport rainwater to the rear end of the drain pipe 406, then to the elbow 408, and finally discharge it through the longitudinal collection pipe 401. If there is sludge inside the drain pipe 406, the rotation of the spiral blades 701 transports the sludge to the rear end of the drain pipe 406, ensuring effective rainwater transport. The protective hopper 704 prevents sludge from clogging the rear external positioning tube 702, thus ensuring effective drainage.

[0020] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

Claims

1. A drainage device suitable for median guardrails in superelevation bridge sections, characterized in that: It includes several beam pavement layers (103), each beam pavement layer (103) has a median strip guardrail (104) fixed on top, a front water collection pit (6) is provided at the front end of every two median strip guardrails (104), and a rear water collection pit (3) is provided at the rear end of every two beam pavement layers (103). A water collection well (202) is fixed inside the front water collection pit (6) and the rear water collection pit (3), and a water collection well cover (2) is tightly fitted to the top of each water collection well (202). A drain pipe (406) is fixed at the rear end of the water well (202). A rear outlet pipe (301) is fixed at the bottom of each water collection well (202). An elbow (408) is provided at the rear end of each drain pipe (406). A longitudinal water collection pipe (401) is provided at the bottom of each elbow (408). An air inlet pipe (404) is provided at the rear end of each longitudinal water collection pipe (401). A rotating shaft (7) is provided inside each drain pipe (406). A spiral blade (701) is fixed outside each rotating shaft (7).

2. The drainage device for the strip guardrail at the super-high section of the bridge according to claim 1, characterized in that: Each of the beam body paving layers (103) has a precast small box girder (102) tightly attached to its bottom, and a beam body support layer (1) tightly attached to the top of each of the precast small box girder (102). Each of the beam body support layers (1) is fixedly connected to the beam body paving layer (103) on top of it, and two external guardrails (101) are also fixed to the top of each of the beam body support layers (1).

3. The drainage device for the strip guardrail at the super-high section of the bridge according to claim 2, characterized in that: Each of the longitudinal water collection pipes (401), each of the drain pipes (406), each of the air inlets (404) and each of the elbows (408) is detachably connected to a protective ring (407). Each of the air inlets (404) and each of the drain pipes (406) is provided with a cast-in-place partition (4). Each of the air inlets (404) is provided with an air inlet protective sleeve (402). Each of the air inlets (404) is fixed with a filter disc (403) at its outer end. Each of the drain pipes (406) and the elbows (408) at its rear end are fastened together by a top flange (405). Each of the elbows (408) and the longitudinal water collection pipes (401) at its bottom are fastened together by a lower flange (405).

4. The drainage device for the strip guardrail at the super-high section of the bridge according to claim 3, characterized in that: Each of the water collection well covers (2) has several support rods (201) fixed on its top, and each of the water collection well covers (2) is fastened to the water collection well (202) at its bottom by bolts (203).

5. The drainage device for use in the bridge superhigh section according to claim 4, characterized in that: Each drain pipe (406) has two connecting strips (703) fixed inside. Each connecting strip (703) has an external positioning tube (702) fixed at its bottom. Each external positioning tube (702) is tightly fitted with the rotating shaft (7) inside it. Each spiral blade (701) is tightly fitted with the drain pipe (406). Each rotating shaft (7) has a protective bucket (704) fixed at its rear end. Each protective bucket (704) is tightly fitted with the connecting strip (703) at its rear end.

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