Novel anti-scouring water-passing pavement structure

Abstract

The utility model relates to a novel anti-scouring water-passing pavement structure. The water-passing pavement structure comprises a tooth wall, a cushion layer structure, a culvert pipe layer structure and a water-passing pavement, the tooth wall, the cushion layer structure, the culvert pipe layer structure and the water passing pavement are sequentially arranged from bottom to top. The culvert pipe layer structure comprises a plurality of reinforced concrete prefabricated culvert pipes arranged side by side and plain concrete wrapping the culvert pipes, and the reinforced concrete prefabricated culvert pipes and the plain concrete jointly form a culvert pipe layer. The utility model has the beneficial effects that (1) due to the arrangement of the tooth wall and the block stone backfilling structure, the anti-scouring capability of the water-passing pavement is enhanced, and the embedding of the tooth wall has better adaptability; due to the arrangement of the surface reinforcing mesh, uniform transmission of loads is achieved, the integrity and durability of the structure are enhanced, and the problem that a traditional water passing pavement is prone to being damaged by water is solved. (2) the technology is applied to a river regulation project, and the defects of high manufacturing cost, high construction difficulty, long construction period and the like of a traditional traffic bridge are overcome;

Description

Technical Field

[0001] The utility model belongs to the technical field of water-passing pavement structures, in particular to the technical field of a novel anti-scouring water-passing pavement structure. Background Art

[0002] Water-passing pavement is generally used when the construction of river-crossing structures on rural roads is restricted by terrain, geology and insufficient investment. It is widely used due to its simple construction process and low cost. Common forms include mixed water-passing pavement and flood bridge combined with water-passing pavement.

[0003] A mixed water-passing pavement refers to a combination of a circular culvert and a water-passing pavement. A flood bridge combined with a water-passing pavement refers to a bridge elevation designed according to the normal water level, allowing water to flow over the bridge deck when a flood occurs. In actual application, for some seasonal mountain rivers, circular culverts are often omitted, and the river water flows directly over the pavement. However, in water conservancy projects, such as river management projects, this type of technology is rarely used. The main reason is that the water-passing pavement has a certain degree of water resistance, poor anti-scouring ability, and is difficult to repair once it is destroyed. Therefore, in river management projects, the conventional cross-strait transportation method is still mainly in the form of a traffic bridge. The design and construction technology of the bridge is very mature, and the anti-scouring ability of the bridge piers can also meet the needs of river management.

[0004] The traditional mixed water-passing pavement has a plain concrete cushion layer at the bottom, a circular culvert buried in the middle, and a water-passing pavement structure at the top. The roadbed on both sides of the water-passing pavement has poor anti-scour ability. Although retaining walls are set up in some projects, they have certain applications in transportation, but they are difficult to meet the anti-scour requirements of conventional river management projects.

[0005] For the traffic bridges commonly used to connect the two banks of the river, their anti-scouring and flow-through capabilities can meet the needs, but the cost is several times or even dozens of times that of the water-passing road surface, and the construction is relatively complex, the technical difficulty is high, the construction period is long, and there are many defects and shortcomings. In summary, a new type of anti-scouring water-passing road surface is urgently needed to meet actual needs. Summary of the invention

[0006] The utility model is to solve the above problems and defects and provide a new type of anti-scouring water-passing road surface. The utility model is an improvement and innovation based on the mixed water-passing road surface.

[0007] The utility model is implemented by the following technical solution.

[0008] A novel anti-scour water-passing pavement structure, the water-passing pavement structure comprising a tooth wall, a cushion layer structure, a culvert layer structure, and a water-passing pavement;

[0009] The tooth wall, cushion structure, culvert layer structure and water-passing road surface are arranged in sequence from bottom to top;

[0010] The cushion structure is a C20 concrete cushion 1 with a certain thickness;

[0011] The culvert layer structure includes a plurality of reinforced concrete prefabricated culverts arranged side by side and plain concrete wrapped outside the culverts, which together constitute the culvert layer 2;

[0012] The water-passing pavement is a C25 concrete water-passing pavement 3.

[0013] Furthermore, the water-passing pavement structure of the utility model further includes a surface steel mesh 4, and the surface steel mesh 4 is fixedly arranged near the top of the water-passing pavement.

[0014] Furthermore, the water-passing pavement structure of the utility model also includes a water-facing side block stone backfill area 6 arranged on the water-facing side and a backwater side block stone backfill area 7 arranged on the backwater side; the water-facing side block stone backfill area 6 and the backwater side block stone backfill area 7 are both arranged in close contact with the tooth wall structure.

[0015] Furthermore, the tooth wall of the utility model is a C20 concrete tooth wall 5.

[0016] Furthermore, the bottom width of the tooth wall of the utility model is 0.5m, and the slope ratios on both sides are vertical and 1:0.5 respectively; that is, the tooth wall is symmetrically arranged as a structure with a right-angled trapezoidal cross-section, and the length of the upper bottom is greater than the length of the lower bottom; the right-angled sides are arranged outwardly, and the waist sides are arranged inwardly.

[0017] Furthermore, the bottom of the water-facing side block stone backfill area 6 of the utility model is 2m long, the bottom of the water-facing side block stone backfill area 7 is 0.5m long, the slope ratio is 1:1, and the backfill depth is consistent with the embedded depth of the tooth wall.

[0018] Furthermore, the thickness of the C20 concrete cushion layer 1 of the present invention is set to be no less than 20 cm.

[0019] Furthermore, the culvert specifications of the utility model are set to a diameter of 600 mm, a wall thickness of 60 mm, and a spacing of 0.1 m between the culverts.

[0020] Furthermore, the surface steel mesh 4 of the utility model is a Ф12 steel mesh.

[0021] Furthermore, the surface steel mesh 4 of the utility model is fixedly laid at a distance of 50 mm from the top of the water-passing road surface.

[0022] Note: ① The width of the water-passing pavement can be determined according to actual needs. Generally, a width of about 4m can meet the needs. The specific dimensions of the tooth wall and the block stone backfill area can also be adjusted appropriately according to actual needs; ② The thickness of the concrete cushion layer and the concrete grade set at the bottom can be adjusted appropriately according to actual needs. If the geological conditions of the river channel are analyzed to have a high risk of uneven settlement, a bottom steel mesh can be added to strengthen its integrity; ③ The diameter, spacing and number of prefabricated culverts can be determined according to the annual flow of river water in the river channel, and the wall thickness can be adjusted after calculation based on the specifications of the prefabrication manufacturer and the load requirements for people and vehicles passing through; ④ The upper concrete water-passing pavement and the surface steel mesh can adjust the pavement thickness or set a double-layer steel mesh and increase the diameter of the steel bars when the risk of uneven settlement is high.

[0023] The beneficial effects of the utility model are:

[0024] ① The setting of tooth wall and block stone backfill structure strengthens the anti-scouring ability of water-passing pavement, and the buried depth of tooth wall is determined according to the actual parameters of the project, which has good adaptability. In addition, the setting of surface steel mesh realizes the uniform transfer of load, strengthens the integrity and durability of the structure, and overcomes the problem of easy water damage faced by traditional water-passing pavement.

[0025] ②The application of this technology in river management projects avoids the shortcomings of traditional traffic bridges, such as high cost, difficult construction and long construction period.

[0026] The utility model is further explained below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the utility model.

[0028] Figure 2 It is a schematic diagram of the structure of the utility model.

[0029] The numbers in the figure are: 1- C20 concrete cushion layer; 2- culvert layer; 3- C25 concrete water-passing pavement; 4- surface steel mesh; 5- C20 concrete tooth wall; 6- block stone backfill area on the water-facing side; 7- block stone backfill area on the water-receiving side. DETAILED DESCRIPTION

[0030] The following embodiments are only a part of the technical solution of the present utility model, and are not intended to limit the entire technical solution of the present utility model. The embodiments of the present utility model are provided to further explain and illustrate the details of the technical solution of the present utility model.

[0031] See Figure 1 , Figure 2 shown.

[0032] The main structural forms of a new type of erosion-resistant water-passing pavement are, from bottom to top: tooth walls and block stone backfill areas on both sides of the pavement, C20 concrete cushion layer 1, culvert layer 2, C25 concrete water-passing pavement 3, and surface steel mesh 4.

[0033] The present invention mainly improves the anti-scouring ability of the water-passing road surface from two aspects: increasing the foundation embedding depth on both sides of the road surface and enhancing the structural safety and stability of the entire road surface. The details are as follows:

[0034] ① Tooth walls and block stone backfill structures are set up on both sides of the road surface to prevent the foundation of the water-passing road surface from being scoured. The buried depth of the tooth wall refers to the depth below the foundation buried ground line. It should be determined based on the scour depth calculated based on the river flow velocity, the median particle size of the bed sand and other parameters. Generally, it should not be less than the foundation buried depth of the embankments on both sides of the river. The bottom width of the tooth wall is 0.5m, and the slope ratios on both sides are vertical and 1:0.5 respectively. The bottom length of the block stone backfill area 6 on the water-facing side is 2m, and the bottom length of the block stone backfill area 7 on the backwater side is 0.5m, with a slope ratio of 1:1. The backfill depth is consistent with the buried depth of the tooth wall;

[0035] ② A 20cm thick C20 concrete cushion 1 is set at the bottom to disperse the upper load and avoid uneven settlement;

[0036] ③ The culvert layer 2 can meet the flow when the river flow is small, so that the road surface remains clean and tidy. The culvert diameter is 600mm, the wall thickness is 60mm, the spacing between the culverts is 0.1m, and the culverts are filled with C20 concrete;

[0037] ④ The upper C25 concrete water-passing pavement 3, and a layer of Ф12 steel mesh is set 50mm away from the top of the pavement to disperse the vehicle load and enhance the durability of the water-passing pavement.

[0038] The main points of protection of this utility model:

[0039] ① Tooth walls and block backfill structures are set up on both sides of the water-passing pavement, and the burial depth is determined based on calculation to enhance the anti-scouring ability of the structure.

[0040] ② A surface steel mesh is set on the upper water-passing pavement to enhance the integrity and durability of the structure.

[0041] The above is only a specific embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A new type of anti-scouring water pavement structure, characterized in that: The water-passing pavement structure includes a tooth wall, a cushion layer structure, a culvert layer structure, and a water-passing pavement; The tooth wall, cushion structure, culvert layer structure and water-passing road surface are arranged in sequence from bottom to top; The cushion structure is a C20 concrete cushion (1) with a certain thickness; The culvert layer structure comprises a plurality of reinforced concrete prefabricated culverts arranged side by side and plain concrete wrapped around the outside of the culverts, which together constitute a culvert layer (2); The water-passing pavement is a C25 concrete water-passing pavement (3).

2. The novel anti-scouring water pavement structure according to claim 1 is characterized in that: The water-passing pavement structure further comprises a surface steel mesh (4), wherein the surface steel mesh (4) is fixedly arranged near the top of the water-passing pavement.

3. The novel anti-scour water pavement structure according to claim 1 is characterized in that: The water-passing pavement structure further comprises a water-facing side block stone backfill area (6) arranged on the water-facing side and a water-receiving side block stone backfill area (7) arranged on the water-receiving side; the water-facing side block stone backfill area (6) and the water-receiving side block stone backfill area (7) are both arranged in close contact with the tooth wall structure.

4. The novel anti-scouring water pavement structure according to claim 1 is characterized in that: The tooth wall is a C20 concrete tooth wall (5).

5. The novel anti-scouring water pavement structure according to claim 1 is characterized in that: The bottom width of the tooth wall is 0.5m, and the slope ratios on both sides are vertical and 1:0.5 respectively; that is, the tooth wall is symmetrically arranged to have a right-angled trapezoidal cross-section, and the length of the upper bottom is greater than the length of the lower bottom; the right-angled sides are arranged outwards, and the waist sides are arranged inwards.

6. The novel anti-scouring water pavement structure according to claim 1 is characterized in that: The bottom of the rock backfill area (6) on the water-facing side is 2 m long, and the bottom of the rock backfill area (7) on the water-facing side is 0.5 m long. The slope ratio is 1:1, and the backfill depth is consistent with the embedded depth of the tooth wall.

7. The novel anti-scouring water pavement structure according to claim 1 is characterized in that: The thickness of the C20 concrete cushion layer (1) is set to be no less than 20 cm.

8. The novel anti-scouring water pavement structure according to claim 1 is characterized in that: The culvert specifications are set to be 600 mm in diameter, 60 mm in wall thickness, and 0.1 m between culverts.

9. The novel anti-scouring water pavement structure according to claim 2 is characterized in that: The surface steel mesh (4) is a Φ12 steel mesh.

10. The novel anti-scouring water pavement structure according to claim 2 is characterized in that: The surface steel mesh (4) is fixedly laid at a distance of 50 mm from the top of the water-passing road surface.

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