Roadbed and pavement drainage structure

Abstract

The utility model discloses a roadbed and pavement drainage structure, and particularly relates to the technical field of pavement drainage structures. The roadbed and pavement drainage structure comprises a plain soil layer, a drainage cushion layer is arranged above the plain soil layer, an inorganic binder base layer is arranged above the drainage cushion layer, a water permeable sand layer is arranged above the inorganic binder base layer, a water permeable concrete layer is arranged above the water permeable sand layer, and a water permeable concrete layer is arranged above the water permeable concrete layer. A water seepage asphalt surface layer is arranged on the upper surface of the water seepage concrete layer, side ditches are arranged below the two sides of the water seepage asphalt surface layer, side ditch covers are installed on the upper surfaces of the side ditches, and a plurality of drainage holes are formed in the surfaces of the side ditch covers. The capillary water seepage pipes which are obliquely arranged towards the side ditch direction are arranged in the water permeable sand layer, when water permeates into the pipes along the center water permeable layer of the capillary water seepage pipes, the water can be rapidly discharged into the side ditch along the first water seepage grating under the gravity inclination effect, and therefore the situation that the water accumulation amount of the water permeable sand layer is too large is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of road surface drainage structures, specifically a roadbed and pavement drainage structure. Background Technique

[0002] Highway bridge engineering refers to all the work of the planning, design, construction, maintenance, repair, etc. of the structures that cross waters, valleys and all traffic channels on the highway. Drainage refers to the artificial control of the water flow direction, artificial drainage, and measures to exclude and handle excess water volume.

[0003] The current roadbed and pavement drainage structure, such as a road and bridge roadbed and pavement drainage structure with the publication number CN214833309U, includes a central isolation belt. Both sides of the central isolation belt are provided with bases. On the other side of the base is a grille. On the other side of the grille is a side ditch. A plurality of water permeable holes are arranged at the connection between the side ditch and the grille. The top surface of the base is provided with a surface layer, and the surface layer is inclined; the base includes a sub-base, a lower base, a connecting layer, and a middle base. The middle base is inclined. A lower sealing layer is arranged on the top surface of the middle base. A penetrating layer is arranged on the top surface of the lower sealing layer. An upper base is arranged on the top surface of the penetrating layer.

[0004] However, when the above roadbed and pavement drainage structure drains water, the water seeping to the lower sealing layer needs to seep to both sides of the grille to be discharged. However, the lower sealing layer is a flat structure, and the drainage efficiency is relatively low only relying on the self-seepage of water bodies, which is prone to water accumulation. Content of the Utility Model

[0005] Technical Problem: Aiming at the problem that the self-seepage drainage efficiency of the water body in the existing roadbed and pavement drainage structure is relatively low and prone to water accumulation during drainage, the utility model provides a roadbed and pavement drainage structure.

[0006] Technical Solution: The roadbed and pavement drainage structure includes a plain soil layer. A drainage cushion layer is arranged above the plain soil layer. An inorganic binder base is arranged above the drainage cushion layer. A permeable sand layer is arranged above the inorganic binder base. A permeable concrete layer is arranged above the permeable sand layer. A permeable asphalt surface layer is arranged on the upper surface of the permeable concrete layer;

[0007] Wherein, side ditches are arranged below both sides of the permeable asphalt surface layer. First permeable grilles are arranged at the connections between the inner walls of the two side ditches and the permeable sand layer. Second permeable grilles are arranged at the connections between the inner walls of the two side ditches and the drainage cushion layer. A central block is arranged at the middle position inside the permeable sand layer, and both sides of the central block are of an inward-inclined structure. One or more capillary seepage pipes are arranged on the outer walls on both sides of the central block, and one end of the capillary seepage pipe penetrates and extends into the side ditch.

[0008] Preferably, the capillary water-permeable pipe includes a central water-permeable layer, a metal outer spiral wire provided on the outer wall of the central water-permeable layer, and a metal inner spiral wire provided on the inner wall of the central water-permeable layer.

[0009] Preferably, the bottom surfaces of two or more of the capillary water-permeable pipes are fixedly connected by reinforcing rods, and one or more reinforcing rods are provided.

[0010] Preferably, the capillary water-permeable pipes on both sides of the central block are inclined towards the side ditch.

[0011] Preferably, grille meshes are arranged inside both the first water-permeable grille and the second water-permeable grille, and a water-permeable non-woven fabric layer is arranged on the inner wall of the grille mesh.

[0012] Preferably, one or more drain branch pipes are arranged on the outer wall of the side ditch, one end of the drain branch pipe is communicated with the side ditch, and one ends of a plurality of the drain branch pipes are communicated through a main drain pipe.

[0013] Preferably, a side ditch cover is installed on the upper surface of the side ditch, one or more drain holes are arranged on the surface of the side ditch cover, and a net bag is arranged below the side ditch cover, and the net bag is hung and connected with the inner wall of the side ditch.

[0014] Beneficial effects: Compared with the prior art, the remarkable features of the present utility model are as follows:

[0015] 1. By arranging a plurality of capillary water-permeable pipes inclined towards the side ditch in the permeable sand layer, when water seeps into the pipe along the central water-permeable layer of the capillary water-permeable pipe, it can quickly drain into the side ditch along the first water-permeable grille under the action of gravity inclination, thereby avoiding the situation of excessive water accumulation in the permeable sand layer, and solving the problem that in the existing roadbed and pavement drainage structure during drainage, the water seeping to the lower sealing layer needs to seep to the two-side grilles for drainage, but the lower sealing layer is a planar structure, and only relying on the self-seepage of water, the drainage efficiency is low and water accumulation is likely to occur.

[0016] 2. The bottom surfaces of a plurality of capillary water-permeable pipes of the present utility model are fixedly connected by reinforcing rods, and metal spiral wires are arranged on both the inner and outer walls of the capillary water-permeable pipes. It is arranged in the permeable sand layer, which can not only achieve a good water guiding effect, but also ensure the structural strength of the permeable sand layer. Description of the drawings

[0017] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 is a schematic diagram of the internal structure of the permeable sand layer of the present utility model;

[0019] Figure 3 is a front view structural schematic diagram of the capillary water-permeable pipe of the present utility model;

[0020] Figure 4 It is the partial enlarged view of part A of the present utility model;

[0021] In the figure: 1, plain soil layer; 2, drainage cushion layer; 3, inorganic binder base layer; 4, permeable sand layer; 5, permeable concrete layer; 6, permeable asphalt surface layer; 7, center block; 8, side ditch; 9, side ditch cover; 10, drainage hole; 11, first permeable grille; 12, second permeable grille; 13, drainage branch pipe; 14, main drain pipe; 15, capillary permeable pipe; 151, center permeable layer; 152, metal outer spiral wire; 153, metal inner spiral wire; 16, reinforcing rod; 17, grille mesh; 18, permeable non-woven fabric layer. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0023] Such as Figures 1-4As shown in the figure, the utility model provides a subgrade and pavement drainage structure, which includes a plain soil layer 1. A drainage cushion layer 2 is arranged above the plain soil layer 1. An inorganic binder base layer 3 is arranged above the drainage cushion layer 2. The inorganic binder base layer 3 is made of cement stabilized macadam material. A permeable sand layer 4 is arranged above the inorganic binder base layer 3. A permeable concrete layer 5 is arranged above the permeable sand layer 4. A permeable asphalt surface layer 6 is arranged on the upper surface of the permeable concrete layer 5. Side ditches 8 are arranged below both sides of the permeable asphalt surface layer 6. A side ditch cover 9 is installed on the upper surface of the side ditch 8. A number of drainage holes 10 are arranged on the surface of the side ditch cover 9. A first permeable grille 11 is arranged at the connection between the inner walls of both side ditches 8 and the permeable sand layer 4. A second permeable grille 12 is arranged at the connection between the inner walls of both side ditches 8 and the drainage cushion layer 2. A central block 7 is arranged at the middle position inside the permeable sand layer 4, and both sides of the central block 7 are of an inwardly inclined structure. A number of capillary water permeable pipes 15 are arranged on the outer walls of both sides of the central block 7, and one end of each capillary water permeable pipe 15 penetrates and extends into the side ditch 8. The capillary water permeable pipe 15 includes a central water permeable layer 151, a metal outer spiral wire 152 and a metal inner spiral wire 153. The metal outer spiral wire 152 is arranged on the outer wall of the central water permeable layer 151, and the metal inner spiral wire 153 is arranged on the inner wall of the central water permeable layer 151. The capillary water permeable pipes 15 on both sides of the central block 7 are inclined towards the side ditch 8. When there is water accumulation on the road surface, part of the water can seep along the permeable asphalt surface layer 6 to both sides and reach the side ditch 8, and seep into the side ditch 8 along a number of drainage holes 10 on the surface of the side ditch cover 9. While another part of the water flows into the permeable sand layer 4 along the gap between the permeable asphalt surface layer 6 and the permeable concrete layer 5. A number of capillary water permeable pipes 15 are arranged in the permeable sand layer 4, which are inclined towards the side ditch 8. When the water seeps into the pipe along the central water permeable layer 151 of the capillary water permeable pipe 15, it can quickly be discharged into the side ditch 8 along the first permeable grille 11 under the action of gravity inclination, thus avoiding the situation of excessive water accumulation in the permeable sand layer 4.

[0024] Furthermore, the bottom surfaces of a number of capillary water permeable pipes 15 are fixedly connected through reinforcing rods 16, and a number of reinforcing rods 16 are provided. Metal spiral wires are arranged on the inner and outer walls of the capillary water permeable pipes 15. Cooperating with a number of reinforcing rods 16 welded at the bottom, the structural strength of the permeable sand layer 4 can be ensured.

[0025] Furthermore, to prevent the rise and overflow of groundwater, a drainage cushion layer 2 is arranged above the plain soil layer 1. The drainage cushion layer 2 is a large-gap gravel structure and has good water permeability. It can guide the groundwater to move towards the second permeable grille 12 on both sides and be discharged into the side ditch 8. Grid meshes 17 are arranged inside both the first permeable grille 11 and the second permeable grille 12. A water permeable non-woven fabric layer 18 is arranged on the inner wall of the grid mesh 17. When the water seeps along the first permeable grille 11 and the second permeable grille 12, the water permeable non-woven fabric layer 18 can isolate the soil layer to prevent it from entering the side ditch and causing blockage, and the grid mesh 17 can improve the structural strength of the water permeable non-woven fabric layer 18.

[0026] For reasonable layout, a plurality of drain branch pipes 13 are provided on the outer wall of the side ditch 8, and one end of each drain branch pipe 13 is communicated with the side ditch 8. One ends of the plurality of drain branch pipes 13 are communicated through a main drain pipe 14. The water collected in the side ditch 8 can be discharged into the main drain pipe 14 through the drain branch pipes 13, so as to facilitate centralized discharge.

[0027] Furthermore, a net bag is provided below the side ditch cover 9, and the net bag is hung and connected to the inner wall of the side ditch 8. The net bag can prevent large-particle impurities on the road surface from entering the side ditch 8 through the drain holes 10 of the side ditch cover 9, thus avoiding the occurrence of pipeline blockage.

Claims

1. Subgrade and pavement drainage structure, including a plain soil layer (1), characterized in that: A drainage cushion layer (2) is arranged above the plain soil layer (1), an inorganic binder base layer (3) is arranged above the drainage cushion layer (2), a permeable sand layer (4) is arranged above the inorganic binder base layer (3), a permeable concrete layer (5) is arranged above the permeable sand layer (4), and a permeable asphalt surface layer (6) is arranged on the upper surface of the permeable concrete layer (5); Side ditches (8) are arranged below both sides of the permeable asphalt surface layer (6). First permeable grilles (11) are arranged at the joints between the inner walls of the two side ditches (8) and the permeable sand layer (4), and second permeable grilles (12) are arranged at the joints between the inner walls of the two side ditches (8) and the drainage cushion layer (2). A central block (7) is arranged at the middle position inside the permeable sand layer (4), and both sides of the central block (7) are of an inward-tilting structure. One or more capillary water-permeable pipes (15) are arranged on the outer walls of both sides of the central block (7), and one end of each capillary water-permeable pipe (15) penetrates and extends into the side ditch (8).

2. The roadbed and pavement drainage structure according to claim 1, characterized in that: The capillary water-permeable pipe (15) includes a central water-permeable layer (151), a metal outer spiral wire (152) arranged on the outer wall of the central water-permeable layer (151), and a metal inner spiral wire (153) arranged on the inner wall of the central water-permeable layer (151).

3. The roadbed and pavement drainage structure according to claim 2, characterized in that: The bottom surfaces of two or more capillary water-permeable pipes (15) are fixedly connected by a reinforcing rod (16), and one or more reinforcing rods (16) are provided.

4. The roadbed and pavement drainage structure according to claim 3, characterized in that: The capillary water-permeable pipes (15) on both sides of the central block (7) are inclined towards the side ditch (8).

5. The roadbed and pavement drainage structure according to claim 1, characterized in that: Grid meshes (17) are arranged inside both the first permeable grille (11) and the second permeable grille (12), and a permeable non-woven fabric layer (18) is arranged on the inner wall of each grid mesh (17).

6. The roadbed and pavement drainage structure according to claim 1, characterized in that: One or more drainage branch pipes (13) are arranged on the outer wall of the side ditch (8), one end of each drainage branch pipe (13) is communicated with the side ditch (8), and one ends of the plurality of drainage branch pipes (13) are communicated through a main drainage pipe (14).

7. The roadbed and pavement drainage structure according to claim 1, characterized in that: A side ditch cover (9) is installed on the upper surface of the side ditch (8), one or more drainage holes (10) are arranged on the surface of the side ditch cover (9), and a net bag is arranged below the side ditch cover (9), and the net bag is hung and connected with the inner wall of the side ditch (8).

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