A permeable concrete road drainage pipe network device and construction method

Abstract

This invention discloses a permeable concrete road drainage network device and construction method. It is a three-dimensional spatial drainage network device composed of cross-shaped pipe fittings A and B, connectors, a main pipe, blind pipes, a filter device, a drain pipe, and a cap. Within the space formed by the cross-section and length of the road structure, the horizontal, vertical, and transverse directions are mutually perpendicular. The main body of the device has a U-shaped cross-section, with its bottom covering the entire horizontal section of the roadbed and arranged along the designed cross slope of the road length. The two sides are located directly below the blind pipes and arranged perpendicularly along the road length. The longitudinal slope of the main body is determined based on the location and elevation of the road's stormwater manholes. Under economical and convenient construction conditions, it can quickly and effectively divert and collect rainwater infiltrating from the road surface and groundwater from the roadbed. It is suitable for rainy areas, low-lying urban road sections, and road sections with abundant groundwater. Using this drainage network device can fully utilize surface and groundwater resources and improve the urban ecological environment.

Description

Technical Field

[0001] This invention relates to the field of concrete road drainage technology, specifically to a permeable concrete road drainage pipe network device and construction method. Background Technology

[0002] 1. The main drainage methods for permeable concrete roads include natural infiltration, drainage through blind ditches on both sides of the road, or collection by laying impermeable membranes. The conventional method is natural infiltration, without any drainage facilities. The drainage capacity is limited and it is not suitable for areas with heavy rainfall. In low-lying urban sections, it cannot promptly remove the water that accumulates at the bottom of the road. In areas with abundant groundwater, the roadbed is located within the groundwater level, and natural infiltration is slow and can damage the roadbed.

[0003] 2. While blind drains can quickly remove rainwater seeping from the road surface to a certain extent, in low-lying urban areas, water accumulates in the blind drains and cannot flow. If there is too much water, it will overflow the road surface and seep into the roadbed, damaging the roadbed structure. Furthermore, since the blind drains of permeable concrete roads are located within the surface and base layers of the road structure, they cannot remove groundwater from the roadbed. Therefore, they are also not suitable for drainage of roadbeds in areas with high groundwater levels.

[0004] 3. Laying geomembranes is suitable for the drainage and collection of rainwater from road surfaces. Its main purpose is to collect rainwater from the road surface for secondary use. However, it can only drain rainwater from the road surface and cannot drain or utilize groundwater below the road surface. The use of geomembranes for rainwater collection and utilization is mostly used on flat sections of urban roads. Its initial investment cost is relatively high. The geomembrane needs to be laid to fully cover the subbase of the road, and the geomembrane is easily damaged during the construction of the upper road structure. The construction is difficult, and the overall application effect is not ideal.

[0005] In summary, the mainstream drainage methods for permeable concrete roads all suffer from the same four problems:

[0006] 1. It cannot eliminate or is not applicable to the removal of rainwater and water accumulation on low-lying urban road sections;

[0007] 2. Groundwater in the roadbed layer of road sections with high groundwater levels cannot be ruled out;

[0008] 3. It is not possible to prevent rainwater infiltration into the permeable concrete pavement under the conditions of economic rationality and simple construction.

[0009] 4. It cannot effectively collect and utilize rainwater infiltrating from the permeable concrete pavement and groundwater from the roadbed at the same time. Summary of the Invention

[0010] The purpose of this invention is to provide a permeable concrete road drainage pipe network device and construction method, which solves the problems of water infiltration and groundwater diversion, collection and utilization in existing permeable concrete pavements while controlling construction costs, reducing construction difficulty and ensuring drainage efficiency.

[0011] To achieve the above objectives, the present invention provides the following technical solution:

[0012] A permeable concrete road drainage network device includes a main body, which is a three-dimensional spatial drainage network device formed by cross-shaped pipe fitting A, cross-shaped pipe fitting B, connectors, main pipe, blind pipe, reverse filter device, drain pipe and cover. The device is perpendicular to each other in the horizontal, longitudinal and vertical directions within the space formed by the cross section and length direction of the road structure. The cross section of the main body is U-shaped. Its bottom covers the entire horizontal section of the subgrade and is arranged along the design cross slope of the road along the length direction of the road. The two sides are arranged perpendicularly along the length direction of the road, directly below the blind pipe. The longitudinal slope of the main body is determined according to the location and elevation of the road rainwater pipe well.

[0013] Furthermore, the cross-shaped pipe fitting A consists of a connector A and a branch pipe. The connector A and the branch pipe are perpendicular to each other and their bottoms are on the same horizontal plane. The two connectors A have the same length and come in two specifications. The two branch pipes have different lengths and are staggered from each other between adjacent parallel main pipe connectors and branch pipe connectors.

[0014] Furthermore, the cross-shaped pipe fitting B consists of a connector B and a branch pipe. The connector B and the branch pipe are perpendicular to each other and their tops are on the same horizontal plane. The connectors B on both sides are the same length and have only one specification. The branch pipes on both sides are the same length.

[0015] Furthermore, the main pipe has the same diameter as connector A and is connected by a connector. The length and diameter can be customized and selected, and it can be cut as needed to set the spacing of the cross-shaped pipe A in the vehicle direction according to requirements.

[0016] Furthermore, the diameter of the blind pipe is the same as that of the connector B and they are connected by a connector. The length and diameter can be customized and selected, and can be cut as needed to set the spacing of the cross-shaped pipe B in the vehicle direction according to requirements. The body of the blind pipe has a row of connectors C that are parallel and perpendicular to the blind pipe. The distribution density of connectors C is customized according to requirements.

[0017] Furthermore, a row of drain pipes perpendicular to the blind pipe is distributed directly above the blind pipe. The drain pipes have the same diameter as the connector C and are connected through a connector. Their length and diameter can be customized.

[0018] Furthermore, the connectors are available in four specifications, connecting to connector A, main pipe, connector B, blind pipe, branch pipe, drain pipe, and connector C respectively; the caps are available in three specifications, sealing one side of connector A or main pipe, connector B or blind pipe, or branch pipe that is no longer connected and needs to be sealed.

[0019] Furthermore, the connector A and the main pipe are provided with a quincunx pattern of reverse filtration devices along the upper two-thirds of the pipe diameter, and the distribution density can be customized according to requirements.

[0020] Furthermore, the reverse filtration device is a truncated cone shape that runs vertically through the body, with the larger opening facing outwards and slightly protruding from the connector A and the main pipe surface. The top and bottom of the truncated cone are perpendicular to the diameter direction of the connector A and the main pipe, and the truncated cone is filled with a reverse filtration layer.

[0021] This invention provides another technical solution: a construction method for a permeable concrete road drainage pipe network device, comprising the following steps:

[0022] S1: During the construction of permeable concrete roadbed, the drainage cross-shaped pipe fitting A is assembled with the main pipe through connectors and pre-embedded in the lower roadbed along the designed cross slope of the road, with the main pipe parallel to the direction of traffic and the branch pipe perpendicular to the direction of traffic. The width of the drainage network is set according to the width of the lower roadbed.

[0023] S2: While assembling the drainage cross pipe fitting A and the main pipe, determine the plan position of the blind ditch in the road design, and set the drainage cross pipe fitting B and the blind pipe in parallel and centered under the blind ditch on both sides of the road through the connector, and make the branch pipe of the drainage cross pipe fitting B aligned with the branch pipe of the adjacent drainage cross pipe fitting A on both sides and connected through the connector.

[0024] S3: After the drainage network device is assembled in the lower subgrade plane, the subgrade groundwater flows into the main pipe through the joint B of the drainage cross fitting B and the back filter device of the main pipe body, in order to prevent piping and soil erosion, and then flows into the blind pipe through the branch pipe.

[0025] S4: When the road is constructed in sections, the outermost branch pipe opening of the cross-shaped pipe fitting A at both ends of the pipeline device, as well as the main pipe opening and blind pipe opening at the starting end of the device, are sealed with matching specifications to prevent leakage and seepage. Then, part of the roadbed is backfilled and paved. After the backfilling is completed, the drain pipe with the same diameter as the blind pipe body joint C is connected to the joint C through the connector, and the drain pipe is ensured to be vertical and the top surface height is above the top surface height of the roadbed. Continue the roadbed construction to the design top elevation of the roadbed. When the blind ditch is constructed in the subsequent road, the drain pipe extending from the top surface of the roadbed is connected to the bottom of the blind ditch and the excess part is cut off so that the top of the pipe is flush with the bottom surface of the blind ditch. At the same time, the pipe is sealed.

[0026] S5: Once the drainage pipe network device is assembled on both sides of the roadbed and connected to the blind drain, the entire drainage pipe network device of this section of the construction road is installed.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] This invention provides a permeable concrete road drainage pipe network device and construction method, which can quickly and effectively divert and collect rainwater infiltrating under the road surface and groundwater in the roadbed while being economical, reasonable and convenient to construct. It is suitable for rainy areas, low-lying urban road sections and road sections with abundant groundwater. Using this drainage pipe network device can make full use of surface and groundwater resources and improve the urban ecological environment. Attached Figure Description

[0029] Figure 1 This is a plan view of the device structure of the present invention;

[0030] Figure 2 For the present invention Figure 1 AA cross-section view;

[0031] Figure 3 For the present invention Figure 1 BB cross-section;

[0032] Figure 4 For the present invention Figure 1 Enlarged view of part C;

[0033] Figure 5 For the present invention Figure 1 Enlarged view of part D.

[0034] In the diagram: 1. Cross fitting A; 2. Cross fitting B; 3. Connector; 4. Main pipe; 5. Blind pipe; 6. Back filter device; 7. Drain pipe; 8. Cover; 9. Connector A; 10. Branch pipe; 11. Connector B; 12. Connector C. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figure 1-5This invention provides a permeable concrete road drainage network device, including a main body. The main body is a three-dimensional spatial drainage network device formed by cross-shaped pipe fitting A1, cross-shaped pipe fitting B2, connector 3, main pipe 4, blind pipe 5, reverse filter device 6, drain pipe 7, and cover 8. The device is perpendicular to each other in the horizontal, vertical, and transverse directions within the space formed by the cross section and length direction of the road structure. The cross section of the main body is U-shaped. Its bottom covers the entire horizontal section of the roadbed and is arranged along the design cross slope of the road along the length direction. The two sides are arranged perpendicularly along the length direction of the road, directly below the blind pipe 5. The longitudinal slope of the main body is determined according to the location and elevation of the road rainwater pipe well. If drainage needs to be collected and utilized, it is determined according to the location and elevation of the water storage tank or drainage collection device.

[0037] In the above embodiments, the cross-shaped pipe fitting A1 consists of a connector A9 and a branch pipe 10. The connector A9 and the branch pipe 10 are perpendicular to each other and their bottoms are on the same horizontal plane. The connectors A9 on both sides are the same length and have two specifications. The branch pipes 10 on both sides are different lengths, and the adjacent parallel main pipe connectors and branch pipe connectors are staggered. The cross-shaped pipe fitting B2 consists of a connector B11 and a branch pipe 10. The connector B11 and the branch pipe 10 are perpendicular to each other and their tops are on the same horizontal plane. The connectors B11 on both sides are the same length and have only one specification. The branch pipes 10 on both sides are the same length.

[0038] In the above embodiment, the main pipe 4 has the same diameter as the connector A9 and is connected by the connector 3. Its length and diameter can be customized and selected, and it can be cut as needed to set the spacing of the cross-shaped pipe fittings A1 in the driving direction according to requirements. The blind pipe 5 has the same diameter as the connector B11 and is connected by the connector 3. Its length and diameter can be customized and selected, and it can be cut as needed to set the spacing of the cross-shaped pipe fittings B2 in the driving direction according to requirements. The body of the blind pipe 5 has a row of connectors C12 that are parallel and perpendicular to the blind pipe 5. The distribution density of the connectors C12 is customized according to requirements. A row of drain pipes 7 that are perpendicular to the blind pipe 5 is distributed directly above the blind pipe 5. The drain pipes 7 have the same diameter as the connectors C12 and are connected through the connector 3. Their length and diameter can be customized and selected.

[0039] In the above embodiments, there are four specifications for connector 3, which respectively connect to connector A9, main pipe 4, connector B11, blind pipe 5, branch pipe 10, drain pipe 7 and connector C12; there are three specifications for cap 8, which respectively cover one side of connector A9 or main pipe 4, connector B11 or blind pipe 5 and branch pipe 10 that are no longer connected and need to be sealed; the reverse filter device 6 is distributed in a quincunx pattern along the upper two-thirds of the pipe diameter of connector A9 and main pipe 4, and its distribution density can be customized according to the requirements.

[0040] In the above embodiment, the reverse filter device 6 is a truncated cone shape that runs vertically through the pipe. The large opening is on the outside and protrudes slightly from the joint A9 and the main pipe 4. The top and bottom of the truncated cone are perpendicular to the diameter direction of the joint A9 and the main pipe 4. The truncated cone is filled with a reverse filter layer. The outer side is a large-diameter water inlet that protrudes slightly from the pipe body. The top and bottom of the inlet are perpendicular to the diameter direction of the joint A9 and the main pipe 4. This ensures that the groundwater can pass smoothly through the reverse filter device 6 without carrying away the soil. After entering the main pipe 4, the groundwater is diverted to the blind pipe through the branch pipe 10.

[0041] To further explain the embodiments of the present invention, a construction method for a permeable concrete road drainage pipe network device is also provided, comprising the following steps:

[0042] S1: During the construction of the permeable concrete roadbed, the drainage cross-shaped pipe fitting A1 and the main pipe 4 are assembled with the connector 3 and pre-embedded in the lower roadbed along the designed cross slope of the road. The main pipe 4 is parallel to the direction of traffic, and the branch pipe 10 is perpendicular to the direction of traffic. The width of the drainage network is set according to the width of the lower roadbed. Ensure that the drainage main pipes 4 are evenly distributed in the roadbed width direction. The spacing between the main pipes 4 and the branch pipes 10 is set according to the road surface drainage volume and groundwater level of the construction section. The length of a single section of the main pipe 4 has at least two specifications, which are selected during assembly. The joints between adjacent pipe fittings are staggered. Because the lengths of the branch pipes 10 are inconsistent on both sides, the joints are automatically staggered. The joints in both the horizontal and vertical directions are staggered to ensure the overall structural stability of the network.

[0043] S2: While assembling the drainage cross-shaped fitting A1 and the main pipe 4, determine the planar position of the blind ditch in the road design. Place the drainage cross-shaped fitting B2 and the blind pipe 5 parallel and centered on both sides of the blind ditch directly below the road through the connector 3. Align the branch pipes 10 of the drainage cross-shaped fitting B2 with the branch pipes 10 of the adjacent drainage cross-shaped fitting A1 on both sides and connect them through the connector 3. During the alignment of the branch pipes of the two cross-shaped fittings, the branch pipes 10 can be aligned and connected by selecting main pipes 4 and blind pipes 5 of different lengths or by cutting part of the pipe body. At the same time, make the pipe body of the blind pipe 5 perpendicular to the row of joints that are parallel to the blind pipe 5 and vertically upward.

[0044] S3: After the drainage network device is assembled in the lower subgrade plane, the subgrade groundwater flows into the main pipe 4 through the joint B11 of the cross-shaped pipe fitting B2 and the filter device 6 of the main pipe 4, in order to prevent piping and soil erosion, and then flows into the blind pipe 5 through the branch pipe 10.

[0045] S4: When constructing the road in sections, after assembling a section of the drainage network device according to the above method and exceeding a certain length of network connection construction, seal the outermost branch pipe opening of the cross fittings A1 at both ends of the network device, as well as the main pipe opening and blind pipe opening at the starting end of the device, with matching specification caps 8 for leak-proof and seepage-proof sealing. Then, carry out partial roadbed backfilling and paving. The backfilling height should be below the top surface of the blind pipe 5 pipe joint. For the branch pipes 10 that are no longer connected at the outer ends of the cross fittings on both sides of the drainage network device, as well as the joints at the starting and ending ends of the device, the main pipe 4, and the blind pipes, etc. 5. Before paving the roadbed material, use the cap 8 to seal the opening for seepage and leakage prevention. If the road needs to be lengthened or widened later, the cap 8 can still be removed for connection. After backfilling, connect the drain pipe 7 with the same diameter as the blind pipe 5 pipe body joint C12 through the connector 3 to the joint C12, and ensure that the drain pipe 7 is vertical and the top surface height is above the top surface height of the roadbed. Continue the roadbed construction to the design top elevation of the roadbed. When constructing the blind ditch in the subsequent road, connect the drain pipe 7 extending from the top surface of the roadbed to the bottom of the blind ditch and cut off the excess part so that the top of the pipe is flush with the bottom surface of the blind ditch. At the same time, do a good job of sealing the pipe.

[0046] S5: Once the drainage pipe network device is assembled on both sides of the roadbed and connected to the blind drain, the entire drainage pipe network device of this section of the construction road is installed.

[0047] In summary, construction and installation will proceed in segments until the entire road section is completed. The slope of the drainage network along the road length will be determined based on the road drainage design's direction of flow into the municipal stormwater network, or, if drainage needs to be collected and reused, based on the location of the water storage facility to which it needs to flow. Once the entire permeable concrete road construction is completed, the drainage network will become operational. After rainfall, rainwater infiltrates into the blind drains and then flows through the sewer pipes into the blind pipes. Groundwater from the roadbed enters the main pipe through a reverse filter and also flows into the blind pipes through branch pipes. Rainwater and groundwater are then guided through the blind pipes into the municipal stormwater network or into designated facilities for reuse, thereby fully utilizing surface and groundwater resources and improving the urban ecological environment.

[0048] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A construction method for a permeable concrete road drainage pipe network device, the device comprising a main body, characterized in that, The main body of the device is a three-dimensional spatial drainage network device composed of cross-shaped pipe fitting A (1), cross-shaped pipe fitting B (2), connector (3), main pipe (4), blind pipe (5), reverse filter device (6), drain pipe (7) and cover (8) in the space formed by the cross section and length direction of the road structure, with the horizontal, vertical and vertical directions being mutually perpendicular; the cross section of the main body of the device is U-shaped, its bottom covers the entire horizontal section of the roadbed and is arranged along the design cross slope of the road along the length direction of the road, and the two sides are located directly below the blind ditch of the road and are arranged vertically along the length direction of the road; the longitudinal slope of the main body of the device is determined according to the location and elevation of the road rainwater pipe well; The cross-shaped pipe fitting A (1) consists of a connector A (9) and a branch pipe (10). The connector A (9) and the branch pipe (10) are perpendicular to each other and their bottoms are on the same horizontal plane. The connectors A (9) on both sides are the same length and have two specifications. The branch pipes (10) on both sides are different in length and are staggered from each other between adjacent parallel main pipe connectors and branch pipe connectors. The cross-shaped pipe fitting B (2) consists of a connector B (11) and a branch pipe (10). The connector B (11) and the branch pipe (10) of the cross-shaped pipe fitting B (2) are perpendicular to each other and their tops are on the same horizontal plane. The connectors B (11) on both sides have the same length and only one specification. The branch pipes (10) on both sides of the cross-shaped pipe fitting B (2) have the same length. The main pipe (4) has the same diameter as the connector A (9) and is connected by the connector (3). The length and diameter can be customized and selected, and can be cut as needed. It is used to set the spacing of the cross pipe fitting A (1) in the vehicle direction according to the requirements. The diameter of the blind pipe (5) is the same as that of the connector B (11) and they are connected by the connector (3). The length and diameter can be customized and selected, and can be cut as needed. It is used to set the spacing of the cross pipe B (2) in the direction of travel according to the requirements. The body of the blind pipe (5) has a row of connectors C (12) that are parallel and perpendicular to the blind pipe (5). The distribution density of connectors C (12) is customized according to the requirements. Its construction method includes the following steps: S1: During the construction of permeable concrete roadbed, the drainage cross pipe fitting A (1) and the main pipe (4) are assembled through the connector (3) and pre-embedded in the lower roadbed along the designed cross slope of the road, and the main pipe (4) is parallel to the direction of traffic, and the branch pipe (10) of the cross pipe fitting A (1) is perpendicular to the direction of traffic. The width of the drainage network is set according to the width of the lower roadbed. S2: While assembling the drainage cross pipe fitting A (1) and the main pipe (4), determine the plan position of the blind ditch in the road design, and set the drainage cross pipe fitting B (2) and the blind pipe (5) in parallel and centered under the blind ditch on both sides of the road through the connector (3), and make the branch pipe (10) of the drainage cross pipe fitting B (2) aligned with the branch pipe (10) of the adjacent drainage cross pipe fitting A (1) on both sides and connected through the connector (3); S3: After the drainage network device is assembled in the lower subgrade plane, the subgrade groundwater flows into the main pipe (4) through the joint A (9) of the drainage cross pipe fitting A (1) and the back filter device (6) of the main pipe (4) to prevent piping and soil erosion, and then flows into the blind pipe (5) through the branch pipe (10). S4: When the road is constructed in sections, the outermost branch pipe of the cross pipe fitting A (1) at both ends of the pipeline device and the main pipe and blind pipe at the beginning of the device are sealed with matching specifications (8) for leak prevention and seepage prevention. Then, some roadbed backfilling and paving are carried out. After the backfilling is completed, the drain pipe (7) with the same diameter as the blind pipe (5) pipe body joint C (12) is connected to the joint C (12) through the connector (3), and the drain pipe (7) is vertical and the top surface height is above the roadbed top surface height. Continue the roadbed construction to the design top elevation of the roadbed. When the blind ditch is constructed in the subsequent road blind ditch, the drain pipe (7) extending from the top surface of the roadbed is connected to the blind ditch from the bottom of the blind ditch and the excess part is cut off so that the top of the pipe is flush with the bottom surface of the blind ditch. At the same time, the pipe is sealed around the pipe. S5: Once the drainage pipe network device is assembled on both sides of the roadbed and connected to the blind drain, the entire drainage pipe network device of this section of the construction road is installed. A row of drain pipes (7) perpendicular to the blind pipe (5) is distributed directly above the blind pipe (5). The drain pipes (7) have the same diameter as the connector C (12) and are connected through the connector (3). Their length and diameter can be customized. The connector A (9) and the main pipe (4) are provided with a quincunx pattern of reverse filter devices (6) along the upper two-thirds of the pipe diameter, and their distribution density can be customized according to requirements.

2. The construction method of a permeable concrete road drainage pipe network device as described in claim 1, characterized in that, The connector (3) has four specifications, which respectively connect to connector A (9), main pipe (4), connector B (11), blind pipe (5), branch pipe (10), drain pipe (7) and connector C (12); the cover (8) has three specifications, which respectively cover one side of connector A (9) or main pipe (4), connector B (11) or blind pipe (5) or branch pipe (10) that no longer need to be connected.

3. The construction method of a permeable concrete road drainage pipe network device as described in claim 2, characterized in that, The reverse filter device (6) is a truncated cone shape with the large opening on the outside and slightly protruding from the pipe surface of the connector A (9) and the main pipe (4). The top and bottom of the truncated cone are perpendicular to the pipe diameter direction of the connector A (9) and the main pipe (4). The truncated cone is filled with a reverse filter layer.

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