Road surface anti-cracking drainage pipe
By incorporating a combined structure of an inner lining, an impermeable layer, a reinforcing layer, an insulation layer, and a corrosion-resistant layer into the drainage pipe, the problems of easy breakage and damage in drainage pipes are solved, achieving stability and extended service life under complex geological and temperature difference environments.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINAN FERGUSON ROAD MAINTENANCE TECH CO LTD
- Filing Date
- 2025-06-04
- Publication Date
- 2026-04-28
AI Technical Summary
Existing drainage pipes are easily broken by cars running over them on the road surface, and are also easily damaged in extreme temperature environments, resulting in a shortened service life.
The system adopts a combined structure of inner lining, seepage prevention layer, reinforcing layer, insulation layer and corrosion resistant layer. The inner lining is made of reinforced polypropylene material, the seepage prevention layer is made of special waterproof coating for pipe roots, the first anti-corrosion layer is made of epoxy resin, the reinforcing layer is composed of concrete and PAE inner reinforcing ring, the insulation layer is made of polyurethane foam, and the outer layer is a urushiol coating.
It enhances the pressure resistance and deformation resistance of drainage pipes, prevents breakage, and extends service life, especially maintaining stability under extreme temperature differences and complex geological conditions.
Smart Images

Figure CN224174687U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of drainage pipe technology, specifically to a road surface crack prevention drainage pipe. Background Technology
[0002] Road surface cracking is the main cause of road damage. As cracks form, water seeps into the roadbed at an accelerated rate under the dynamic water pressure caused by traffic loads and rainwater. Water directly affects the strength and stability of the roadbed. If the water inside the roadbed is not drained in time, the roadbed will not be in a dry, firm and stable state, which will easily lead to roadbed and pavement deformation or collapse. Therefore, drainage pipes are needed to drain the water from the road surface.
[0003] For example, as shown in Chinese patent application No. 202420910445.2, the technical solution includes an outer pipe; the outer pipe is set in the permeable layer of the road surface, one end of the outer pipe is a closed end and the other end is an open end, the closed end is located inside the road and is higher than the open end, and permeable holes are provided on the upper radial wall of the outer pipe. The drainage pipe also includes an inner pipe, which is set inside the cavity of the outer pipe. The inner pipe includes a first inner pipe and a second inner pipe, both ends of the first and second inner pipes are open, and there is a set distance between the inner ends of the first and second inner pipes and the closed end of the outer pipe. The outer end of the first or second inner pipe is connected to high-pressure water for flushing the cavity of the outer pipe, and a heating element is provided inside the cavity of the second or first inner pipe. This technical solution discharges rainwater from the cavity by gravity. The drain pipe has two inner pipes inside its outer pipe. One inner pipe has a heating element installed in its cavity to generate heat during rain and snow in winter, preventing ice from clogging the inner cavity of the outer pipe. The other inner pipe is connected to high-pressure water, which flushes out silt or debris. Moreover, when the heating element in the first inner pipe melts and loosens the ice in its cavity, the high-pressure water from the second inner pipe flushes out the ice shards, which can speed up the ice removal efficiency and save the power of the heating element.
[0004] However, the following problems still exist in this technical solution: the drainage pipe has low strength and is located on the road surface, making it easy to be run over by cars and break, thus rendering it unusable. Utility Model Content
[0005] The purpose of this utility model is to provide a road surface crack-resistant drainage pipe. The reinforcing layer not only enhances the pressure resistance of the drainage pipe, enabling it to remain stable under complex and variable geological conditions, but also significantly improves its deformation resistance, preventing damage from being run over by vehicles and extending its service life. Furthermore, the inner lining layer ensures stable performance under extreme temperature differences, preventing breakage due to temperature variations and further extending the pipe's service life, thus addressing the aforementioned shortcomings in the technology.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a road surface crack prevention and drainage pipe, including a drainage pipe, the drainage pipe including an inner lining layer, an anti-seepage layer inside the inner lining layer, a first anti-corrosion layer inside the anti-seepage layer, a reinforcing layer outside the inner lining layer, a heat insulation layer outside the reinforcing layer, and a second corrosion-resistant layer outside the heat insulation layer.
[0007] Preferably, the inner lining is made of reinforced polypropylene material, which enables the drainage pipe to maintain stable performance under extreme temperature differences and extends the service life of the drainage pipe.
[0008] Preferably, the seepage-proof layer is a seepage-proof coating made of special waterproof coating for pipe roots applied to the inner wall of the lining layer, which can effectively block the penetration of water and avoid damage to the inside of the drainage pipe.
[0009] Preferably, the first anti-corrosion layer is an anti-corrosion coating formed by applying epoxy resin to the surface of the seepage-proof layer, which can effectively prevent internal corrosion of the drainage pipe and extend the service life of the drainage pipe.
[0010] Preferably, the reinforcing layer comprises concrete, and the concrete has multiple PAE inner reinforcing rings inside, and multiple PAE inner reinforcing rings are fixedly installed on the outside, which can enhance the compressive strength of the drainage pipe and extend the service life of the drainage pipe.
[0011] Preferably, the insulation layer is made of polyurethane foam, which can effectively reduce heat transfer and energy loss inside the drainage pipe.
[0012] Preferably, the second corrosion-resistant layer is a corrosion-resistant coating formed by applying urushiol paint to the surface of the insulation layer, which can protect the outer surface of the drainage pipe from corrosion and extend its lifespan, effectively reducing heat transfer and energy loss in the pipe.
[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows:
[0014] 1. The reinforcing layer in this utility model is composed of concrete, PAE inner reinforcing rings and PAE inner reinforcing strips. The PAE inner reinforcing rings and PAE inner reinforcing strips are embedded in the concrete. The PAE inner reinforcing strips have high strength and toughness. The reinforcing layer not only enhances the compressive strength of the drainage pipe, enabling it to remain stable under complex and changing geological conditions, but also significantly improves its deformation resistance, preventing damage from being run over by vehicles and extending its service life.
[0015] 2. The inner lining layer in this utility model is made of reinforced polypropylene material. Reinforced polypropylene can withstand high temperatures and maintain toughness at low temperatures. By setting the inner lining layer, the performance of the drainage pipe is stable under extreme temperature difference environment, avoiding the breakage of the drainage pipe due to temperature difference and extending the service life of the drainage pipe.
[0016] 3. The first anti-corrosion layer in this utility model is an anti-corrosion coating formed by applying epoxy resin to the surface of the seepage-proof layer. Applying epoxy resin to the inside of the drainage pipe can form a strong protective film. Epoxy resin has excellent corrosion resistance and adhesion, effectively preventing internal corrosion of the drainage pipe and extending the service life of the drainage pipe. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.
[0018] Figure 1 This is a front view of the present invention;
[0019] Figure 2 This is a schematic diagram of the internal structure of the drainage pipe of this utility model;
[0020] Figure 3 This is a top view of the drainage pipe of this utility model;
[0021] Figure 4 For the present utility model Figure 3 Cross-sectional view along direction A;
[0022] Figure 5 This is a schematic diagram of the reinforcing layer of this utility model.
[0023] Explanation of reference numerals in the attached figures:
[0024] 1. Drainage pipe, 101. Inner lining, 102. Seepage-proof layer, 103. First anti-corrosion layer, 104. Reinforcing layer, 105. Thermal insulation layer, 106. Second corrosion-resistant layer;
[0025] 1041 Concrete, 1042 PAE Inner Reinforcing Ring, 1403 PAE Inner Reinforcing Strip. Detailed Implementation
[0026] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.
[0027] This utility model provides, for example Figures 1-5 The road surface crack prevention and drainage pipe shown includes a drainage pipe 1, which includes an inner lining layer 101, an impermeable layer 102 inside the inner lining layer 101, a first anti-corrosion layer 103 inside the impermeable layer 102, a reinforcing layer 104 outside the inner lining layer 101, and a heat insulation layer 105 outside the reinforcing layer 104. A second corrosion resistant layer 106 outside the heat insulation layer 105.
[0028] like Figure 2 , Figure 4 As shown, the inner lining 101 is made of reinforced polypropylene material. In this utility model, the reinforced polypropylene can withstand high temperatures and maintain toughness at low temperatures. By setting the inner lining 101, the performance of the drainage pipe 1 is stable under extreme temperature difference conditions, avoiding the breakage of the drainage pipe 1 due to temperature difference and extending the service life of the drainage pipe 1.
[0029] like Figure 2 , Figure 4 As shown, the seepage-proof layer 102 is a seepage-proof coating made of special waterproof coating for pipe roots applied to the inner wall of the inner lining layer 101. The special waterproof coating for pipe roots in this utility model can form a tough waterproof membrane when applied to the inside of the drainage pipe 1, effectively blocking the penetration of water. It also has good elasticity and crack resistance, and can adapt to the slight deformation of the base layer, thereby ensuring the integrity and durability of the waterproof layer. By setting the seepage-proof layer 102, water can penetrate into the inside of the drainage pipe 1, avoiding water damage to the inside of the drainage pipe 1.
[0030] like Figure 2 , Figure 4 As shown, the first anti-corrosion layer 103 is an anti-corrosion coating formed by applying epoxy resin to the surface of the seepage-proof layer 102. The epoxy resin in this invention can form a strong protective film inside the drainage pipe 1. Epoxy resin has excellent corrosion resistance and adhesion, effectively preventing internal corrosion of the drainage pipe 1 and extending the service life of the drainage pipe 1.
[0031] like Figure 2 , Figure 4As shown, the reinforcing layer 104 includes concrete 1041, with multiple PAE inner reinforcing rings 1042 inside the concrete 1041. Multiple 1403s are fixedly attached to the outside of the multiple PAE inner reinforcing rings 1042. In this invention, the PAE inner reinforcing rings 1042 and PAE inner reinforcing bars 1043 are embedded inside the concrete 1041. The PAE inner reinforcing bars have high strength and toughness. The reinforcing layer 104 not only enhances the compressive strength of the drainage pipe 1, enabling the drainage pipe 1 to remain stable under complex and changing geological conditions, but also significantly improves the deformation resistance of the drainage pipe 1, preventing the drainage pipe 1 from being damaged by being run over by a car, and extending the service life of the drainage pipe 1.
[0032] like Figure 2 , Figure 4 As shown, the insulation layer 105 is made of polyurethane foam. The polyurethane foam in this utility model has good heat insulation performance and heat preservation effect, low thermal conductivity and good heat insulation performance, which can effectively reduce heat transfer and energy loss inside the drainage pipe 1, avoid cracking of the drainage pipe 1 due to temperature difference, and extend the service life of the drainage pipe 1.
[0033] like Figure 2 , Figure 4 As shown, the second corrosion-resistant layer 106 is a corrosion-resistant coating formed by applying urushiol coating to the surface of the insulation layer 105. urushiol in this invention is a natural substance extracted from raw lacquer, possessing excellent anti-corrosion properties. It is resistant to acids, alkalis, ammonia, and water, thus meeting the anti-corrosion requirements of ammonia, ammonia water, chlorine, and hydrogen sulfide gases. By setting the second corrosion-resistant layer 106, the outer surface of the drainage pipe 1 can be protected from corrosion, extending its lifespan and effectively reducing heat transfer and energy loss in the pipe.
[0034] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.
Claims
1. A road surface crack prevention and drainage pipe, comprising a drainage pipe (1), characterized in that: The drainage pipe (1) includes an inner lining (101), an anti-seepage layer (102) inside the inner lining (101), a first anti-corrosion layer (103) inside the anti-seepage layer (102), a reinforcing layer (104) outside the inner lining (101), a heat insulation layer (105) outside the reinforcing layer (104), and a second corrosion resistant layer (106) outside the heat insulation layer (105). The reinforcing layer (104) includes concrete (1041), and the concrete (1041) has multiple PAE inner reinforcing rings (1042) inside, and multiple (1403) are fixedly provided on the outside of the multiple PAE inner reinforcing rings (1042).
2. The road surface crack prevention and drainage pipe according to claim 1, characterized in that: The inner lining (101) is made of reinforced polypropylene material.
3. The road surface crack prevention and drainage pipe according to claim 1, characterized in that: The impermeable layer (102) is an impermeable coating applied to the inner wall of the lining layer (101) by a special waterproof coating for pipe roots.
4. The road surface crack prevention and drainage pipe according to claim 1, characterized in that: The first anti-corrosion layer (103) is an anti-corrosion coating formed by applying epoxy resin to the surface of the impermeable layer (102).
5. The road surface crack prevention and drainage pipe according to claim 1, characterized in that: The insulation layer (105) is made of polyurethane foam.
6. The road surface crack prevention and drainage pipe according to claim 1, characterized in that: The second corrosion-resistant layer (106) is a corrosion-resistant coating formed by applying urushiol paint to the surface of the insulation layer (105).
Citation Information
Patent Citations
Pavement drainage pipe and pavement drainage structure
CN222666455U