Drainage structure of apron drainage base layer

Abstract

The utility model provides an airport apron drainage base layer drainage structure which is used for drainage of a drainage base layer in an airport apron pavement structure and comprises a drainage ditch body arranged adjacent to the drainage base layer, the drainage base layer forms a drainage path with at least a first water flow direction, and the first water flow direction intersects with the extension direction of the drainage ditch body; wherein the drainage ditch body and the drainage base layer are in one-way communication in the first water flow direction. The drainage structure of the airport apron drainage base layer can solve the technical problem that in the prior art, water of the drainage base layer in an airport apron pavement structure is deposited outside a drainage ditch body and cannot be drained, and consequently the pavement has diseases.

Description

Technical Field

[0001] The utility model relates to the field of airport engineering, in particular to an apron drainage base drainage structure. Background Art

[0002] Airport cement concrete pavements usually suffer from water damage such as bottom hollowing and mud pumping before reaching their service life or even after a few years of use. Domestic and foreign scholars have analyzed these diseases and believe that the infiltration of rainwater on the pavement surface and the upward flow of underground water vapor will cause a large amount of moisture to be generated between the bottom of the pavement surface layer and the base layer, thus causing pavement diseases. In recent years, airport pavements have been continuously improved and the pavement structure has been continuously optimized. Adding a drainage base layer between the cement concrete pavement surface layer and the water-stable base layer has been recommended and adopted by more and more scholars as a new way to solve pavement water damage. Through the setting of the drainage upper base layer, the moisture between the cement pavement and the water-stable base layer can be drained to the shoulder and soil surface area through the permeability of the drainage base layer itself and the cross slope of the pavement itself, and then discharged externally.

[0003] In actual applications, due to limited conditions, designers often set up terrain valley lines inside the apron, and set up open ditches with covers at corresponding positions to collect rainwater on the apron; the slope of the drainage base layer is consistent with the slope of the apron surface. At this time, the water in the drainage base layer cannot be discharged to the shoulder and the soil surface area, and all slope toward the drainage ditch body inside the apron; since the side walls of the traditional apron drainage ditch body are closed, the water inside the drainage base layer will accumulate in the pavement structure around the apron drainage ditch body, causing the pavement drainage base layer to fail to play its role and even accelerate the damage to the pavement structure. Utility Model Content

[0004] The utility model aims to provide an apron drainage base drainage structure to solve the technical problem in the prior art that moisture in the drainage base of the apron pavement structure is accumulated outside the drainage ditch and cannot be discharged, resulting in pavement damage.

[0005] To achieve the above-mentioned purpose, the utility model provides an apron drainage base drainage structure, which is used for drainage of the drainage base within the apron pavement structure, including a drainage ditch body arranged adjacent to the drainage base, the drainage base forming a drainage path with at least a first water flow direction, and the first water flow direction intersects with the extension direction of the drainage ditch body; wherein the drainage ditch body and the drainage base are unidirectionally connected in the first water flow direction.

[0006] Compared with the prior art, the beneficial effects of the present invention are:

[0007] The drainage structure of the apron drainage base layer of the utility model provides a drainage ditch body adjacent to the drainage base layer in the apron, so that the water flow in the drainage base layer of the pavement structure has a discharge path, and can be discharged into the inner cavity of the drainage ditch body by itself, so that the drainage base layer in the pavement structure is connected with the airport drainage system, and the water accumulated around the drainage ditch body of the apron can be discharged, while at the same time, the water flow is prevented from entering the drainage base layer from the inner cavity of the drainage ditch body, and rainwater backflow is prevented. The drainage base layer drainage structure cooperates with the pavement drainage base layer, effectively reducing the water damage of the pavement and extending the service life of the pavement.

[0008] Preferably, a one-way drainage component is provided between the drainage ditch body and the drainage base layer, and the one-way drainage component includes a drain pipe and a check valve arranged on the drain pipe, the water inlet end of the drain pipe is connected to the drainage base layer, the water outlet end of the drain pipe is connected to the inner cavity of the drainage ditch body, and the check valve is used to prevent water from flowing through the drain pipe and entering the drainage base layer from the drainage ditch body.

[0009] Preferably, the drain pipe extends downward from the water inlet end to the water outlet end at a preset slope.

[0010] Preferably, the one-way drainage component further comprises a water collecting pipe connected to the water inlet end of the drain pipe, the water collecting pipe is arranged in the drainage base layer, and a plurality of water inlet holes are distributed on the surface of the water collecting pipe.

[0011] Preferably, the water collecting pipe is arranged in contact with the outer wall of the drainage ditch body.

[0012] Preferably, a water stop strip is provided at the bottom of the drainage base layer and on the side of the drainage base layer facing the drainage ditch body. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present utility model, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 A schematic diagram of the structure of the drainage base drainage structure of the apron provided by the utility model;

[0015] Figure 2 A cross-sectional view of the check valve provided by the utility model;

[0016] Figure 3 A schematic diagram of the connection structure of the check valve provided by the utility model;

[0017] Figure 4 A schematic diagram of the structure of the water collecting pipe provided by the utility model;

[0018] Figure 5 This is a schematic diagram of the connection between the water collecting pipe and the drain pipe provided by the utility model.

[0019] In the figure: drainage base layer 1, cement pavement surface layer 2, cement gravel base layer 3, drainage ditch body 4, outer wall 41, inner cavity 42, drain pipe 5, check valve 6, fan blade 61, internal thread 62, water collecting pipe 7, water inlet hole 71, elbow 8, water stop strip 9. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Figure 1 This is a schematic diagram of the structure of the drainage base drainage structure of the apron provided by the utility model. Figure 1 As shown, the present embodiment discloses an apron drainage base drainage structure, which is used for drainage of the drainage base within the apron pavement structure, including a drainage ditch body 4 arranged adjacent to the drainage base 1, the drainage base 1 forming a drainage path having at least a first water flow direction, and the first water flow direction intersects with the extension direction of the drainage ditch body 4; wherein the drainage ditch body 4 and the drainage base 1 are unidirectionally connected in the first water flow direction.

[0022] Specifically, continue as Figure 1 As shown, the drainage ditch body 4 and the drainage base layer 1 are provided with a one-way drainage component, and the one-way drainage component includes a drain pipe 5 and a check valve 6 arranged on the drain pipe 5, the water inlet end of the drain pipe 5 is connected to the drainage base layer 1, and the water outlet end of the drain pipe 5 is connected to the drainage ditch body 4.

[0023] Figure 2 This is a cross-sectional view of the check valve provided by the utility model. Figure 2 As shown, the check valve 6 is provided with a fan blade 61 that can be opened and closed. The fan blade 61 can only be opened in one direction. When water flows from the drainage base layer 1 into the drain pipe 5 and flows through the fan blade 61 toward the inner cavity 42 along the first water flow direction, the fan blade 61 is opened. When water flows through the fan blade 61 in the opposite direction of the first water flow direction, the fan blade 61 is closed to prevent rainwater from flowing back into the drainage base layer when the water level in the drainage ditch rises.

[0024] Figure 3 This is a schematic diagram of the connection structure of the non-return valve provided by the utility model. Figure 3As shown, the check valve 6 is provided with an internal thread 62, which is used to cooperate with the external thread provided on the drain pipe 5 to connect and fix the check valve 6 to the drain pipe 5. In other feasible embodiments, the check valve 6 may also have an external thread, which is correspondingly matched with the internal thread provided on the drain pipe 5 for fixation, or is fixed by other methods in the prior art.

[0025] Specifically, the drain pipe 5 extends downward from the water inlet end to the water outlet end at a preset slope, which is conducive to the rapid discharge of water from the drainage base. The drain pipe 5 is arranged at a certain interval. In some specific embodiments, the preset slope is 3%, and the drain pipe interval is 5m.

[0026] Figure 4 The schematic diagram of the structure of the water collecting pipe provided by the utility model is shown in FIG. Figure 4 As shown, the one-way drainage assembly also includes a water collecting pipe 7 connected to the water inlet end of the drain pipe 5. The water collecting pipe 7 is arranged in the drainage base layer 1, and a plurality of water inlet holes 71 are distributed on the surface of the water collecting pipe 7. In some specific embodiments, the water collecting pipe 7 has a diameter of 50 mm and is provided with 3 to 4 rows of water inlet holes 71 arranged longitudinally. The water inlet holes 71 are arranged equidistantly along the periphery of the pipe, and the total opening area per linear meter is not less than 3000 mm. 2 , so that the water in the drainage base can flow into the water collecting pipe.

[0027] Figure 5 This is a schematic diagram of the connection between the water collecting pipe and the water drain pipe provided by the utility model. Figure 5 As shown, in a preferred embodiment, the water collecting pipe 7 is arranged in close contact with the outer wall 41 of the drainage ditch body 4, so that the water flow in the drainage base layer can enter the water collecting pipe along the first water flow direction. The water collecting pipe 7 is connected with the drainage pipe 5 through the turning head 8, and the water flows through the water collecting pipe 7 along the second water flow direction different from the first water flow direction, enters the drainage pipe 5 through the turning head 8, and then is discharged into the inner cavity 42 of the drainage ditch body 4 through the drainage pipe 5.

[0028] More specifically, a water stop strip 9 is provided at the bottom of the drainage base layer 1 and at the side of the drainage base layer 1 facing the drainage ditch body 4 to prevent the water in the drainage base layer from penetrating into the lower structure due to untimely discharge, or seeping down along the connection between the drainage base layer and the drainage ditch body, thereby preventing the seepage water from damaging the lower structure. The water stop strip can be made of water-insulating materials in the prior art such as asphalt felt.

[0029] The above description of various embodiments of the present invention is provided to those skilled in the art for the purpose of description. It is not intended to be exhaustive or to limit the present invention to a single disclosed embodiment. As described above, various substitutions and variations of the present invention will be apparent to those skilled in the art to which the above-mentioned technology belongs. Therefore, although some alternative embodiments have been specifically discussed, other embodiments will be apparent, or relatively easy for those skilled in the art to derive. The present invention is intended to include all substitutions, modifications and variations of the present invention discussed herein, as well as other embodiments falling within the spirit and scope of the above-mentioned application.

[0030] Although the present invention has been described through embodiments, those skilled in the art will appreciate that there are many modifications and changes to the present invention without departing from the spirit of the present invention. It is intended that the appended claims include these modifications and changes without departing from the spirit of the present invention.

Claims

1. The apron drainage base drainage structure is used for drainage of the drainage base in the apron pavement structure, and is characterized by: It includes a drainage ditch body arranged adjacent to the drainage base layer, the drainage base layer forms a drainage path with at least a first water flow direction, the first water flow direction intersects with the extension direction of the drainage ditch body; wherein the drainage ditch body and the drainage base layer are unidirectionally connected in the first water flow direction.

2. The apron drainage base drainage structure according to claim 1 is characterized in that: A one-way drainage component is provided between the drainage ditch body and the drainage base layer, and the one-way drainage component includes a drain pipe and a check valve arranged on the drain pipe, the water inlet end of the drain pipe is connected to the drainage base layer, and the water outlet end of the drain pipe is connected to the inner cavity of the drainage ditch body, and the check valve is used to prevent water from flowing through the drain pipe and entering the drainage base layer from the drainage ditch body.

3. The apron drainage base drainage structure according to claim 2 is characterized in that: The drain pipe extends downward from the water inlet end to the water outlet end at a preset slope.

4. The apron drainage base drainage structure according to claim 2 is characterized in that: The one-way drainage component also includes a water collecting pipe connected to the water inlet end of the drain pipe. The water collecting pipe is arranged in the drainage base layer, and a plurality of water inlet holes are distributed on the surface of the water collecting pipe.

5. The apron drainage base drainage structure according to claim 4 is characterized in that: The water collecting pipe is arranged in contact with the outer wall of the drainage ditch body.

6. The apron drainage base drainage structure according to claim 4, characterized in that: A water stop strip is provided at the bottom of the drainage base layer and at the side of the drainage base layer facing the drainage ditch body.

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