CN211036590U - A protective structure for permeable roadbed - Google Patents

Abstract

The utility model relates to a roadbed protective structure permeates water, including laying roadbed and curb side slope on the ground, the curb side slope is located the both sides wall that the roadbed is relative, it protects the bank protection to be provided with the curb on the curb side slope, it has laid the waterproof board to be provided with protection slope road bed surface on the curb protection bank protection, the permeable membrane has been laid on the waterproof board surface, the permeable membrane surface has been laid the permeable asphalt pavement, the edge of permeable asphalt pavement is provided with the rail guard, a plurality of outlets have been seted up to the bottom of rail guard, the vertical wash port of having seted up in permeable asphalt pavement, be provided with a plurality of collector pipes in the roadbed, the collector pipe runs through the waterproof board and cooperates with the sealed of waterproof board lateral wall, be provided with the drain pipe in the roadbed, the drain pipe stretches out protection slope surface, collector. The utility model has the advantages that: the utility model discloses can be rapid get rid of ponding on the road surface, improve the drainage ability on road surface.

Description

A protective structure for permeable roadbed

technical field

The utility model belongs to the field of construction engineering, in particular to a water-permeable roadbed protection structure.

Background technique

Subgrade, a structure formed by filling or excavation that directly supports the road. The roadbed is connected with bridges and tunnels to form a line together. There are two basic forms of roadbed according to the terrain conditions it is located in: embankment and cutting, commonly known as fill and cut. The main function of the subgrade is to provide the necessary conditions for the operation of trains or traffic, bear the static and dynamic loads of rolling stock or road and traffic loads, and at the same time transmit and spread the loads to the depths of the foundation.

Generally, guardrails are set on both sides of the road. There are generally two types of guardrails, one is steel guardrails, and the other is concrete guardrails. The strength of concrete guardrails is greater than that of steel guardrails. On the winding mountain highway, since both sides of the highway are steep and steep, for driving safety, it is necessary to install strong concrete guardrails on both sides of the road. Due to the existence of concrete guardrails and the poor drainage effect of the road surface, when it rains for a long time, it is easy to accumulate a lot of water on the road surface, and it is easy to slip when driving, causing potential safety hazards.

Utility model content

The purpose of the utility model is to provide a water-permeable roadbed protection structure, which can discharge the accumulated water accumulated on the road in a short time and improve the drainage capacity of the road.

The above-mentioned utility model purpose of the present utility model is achieved through the following technical solutions:

A permeable roadbed protection structure, comprising a roadbed laid on the foundation and a road shoulder slope, the road shoulder side slopes are located on opposite side walls of the roadbed, the road shoulder side slope is provided with a road shoulder protection slope, and the road shoulder protection slope is provided on the road shoulder. A protective slope is provided, a waterproof board is laid on the surface of the roadbed, a water-permeable membrane is laid on the surface of the waterproof board, a permeable asphalt pavement is laid on the surface of the permeable membrane, and the edge of the permeable asphalt pavement is provided with a guardrail, so The bottom of the guardrail is provided with a number of drains, the drains communicate with the surface of the water-permeable asphalt pavement, and the water-permeable asphalt pavement is vertically provided with drain holes penetrating the water-permeable asphalt pavement. A number of water collecting pipes are provided, the water collecting pipes penetrate through the waterproof board and are in sealing cooperation with the side walls of the waterproof board. A water pipe is communicated with the drainage pipe, and the drainage pipe is communicated with the protective slope surface.

By adopting the above technical solutions, when there is accumulated water on the permeable asphalt pavement, a part of the accumulated water flows through the drainage port at the bottom of the guardrail, and the accumulated water is discharged to the surface of the guard slope. Mainly, it can quickly drain the accumulated water on the pavement from the inside, and the accumulated water flows through the interior of the permeable asphalt pavement and the drainage holes, and quickly drains the road surface water to the surface of the waterproof board through the permeable membrane, and the accumulated water flows to the collector through the permeable membrane. In the water pipe, it flows to the drainage pipe, and finally flows to the protective slope, so as to quickly discharge the accumulated water on the road surface. play a certain protective role.

The utility model is further configured as follows: the road shoulder protection slope includes a road shoulder concrete layer, a metal mesh, a waterproof membrane and a soil layer laid from bottom to top, and the road shoulder concrete layer, the metal mesh, the waterproof membrane and the soil layer are all inclined and arranged , the metal mesh is arranged in the road shoulder concrete layer, and the road shoulder concrete layer is laid on the surface of the road shoulder slope.

By adopting the above technical solutions, the installation of the road shoulder concrete layer can increase the strength of the road shoulder protection slope, and the installation of the waterproof membrane can prevent the accumulation of water from immersing in the road shoulder concrete layer, which can protect the road shoulder protection slope to a certain extent, and the road shoulder concrete layer can be fixed inside The installation of metal mesh is conducive to improving the strength and stability of the road shoulder concrete layer, thereby improving the protection ability of the protective structure to the road shoulder slope and roadbed.

The utility model is further configured as follows: the protective slope is arranged on the soil layer, the top surface of the protective slope is inclined with an installation groove, and the inclination angle of the slope surface of the installation groove is the same as the inclination angle of the protective slope surface, The two opposite side walls of the installation groove are curved, and a number of hexagonal reinforcement blocks are arranged in the installation groove. The reinforcement blocks are stacked on the surface of the installation groove. The side walls of the installation grooves are in contact with each other, and the outer side walls of the adjacent reinforcement blocks are in contact with each other.

By adopting the above technical solution, the arrangement of the reinforcement blocks can increase the strength of the protective slope, thereby increasing the strength of the road shoulder side slope and the road shoulder protective slope.

The utility model is further configured as follows: the surface of the protective slope is provided with drainage grooves, the drainage grooves are located on both sides of the installation groove, the water inlet of the drainage groove is located at the top of the shoulder protection slope, and the drainage pipe is connected to the drainage groove. The foundation is provided with a drainage ditch, the drainage ditch is located on both sides of the roadbed, and the drainage trough is communicated with the drainage ditch.

By adopting the above technical solution, the accumulated water on both sides of the road surface is discharged from the drainage holes, then flows into the drainage groove, and then flows to the drainage ditch through the drainage groove. speed.

The utility model is further provided that: the lower end of the drainage groove is provided with a support groove, and the support groove is connected with the drainage groove.

By adopting the above technical solution, the provision of the branch groove not only plays a role in diverting the flow, but also helps to slow down the flow rate of the water flow in the drainage groove, reduce the erosion of the water flow on the drainage groove, and play a certain protective role on the protective slope.

The utility model is further provided that: the reinforcing block is provided with a plurality of hydrophobic holes.

By adopting the above technical solution, the arrangement of the hydrophobic holes can make the accumulated water in the installation groove drain out of the installation groove more quickly.

The utility model is further arranged as follows: the roadbed comprises a roadbed concrete layer, a fine sand gravel layer and a gravel cushion layer laid from bottom to top, the roadbed concrete layer is laid on the surface of the foundation, and the drainage pipe is arranged on the fine sand gravel within the layer.

By adopting the above technical scheme, the setting of the subgrade concrete layer enables the subgrade to have better compressive and load-bearing performance.

To sum up, the beneficial technical effects of the present utility model are:

1. When there is stagnant water on the permeable asphalt pavement, a part of the stagnant water flows through the drain at the bottom of the guardrail, and the stagnant water is discharged to the surface of the protective slope. The water on the road surface is quickly discharged to the surface of the waterproof board, and the accumulated water flows into the water collecting pipe through the permeable membrane, then flows to the drainage pipe, and finally flows to the protective slope surface, so as to quickly discharge the accumulated water on the road surface, and the waterproof board can block the accumulated water. On the surface of the waterproof board, the accumulated water cannot pass through the waterproof board, which can protect the roadbed to a certain extent.

2. After the accumulated water on both sides of the road is discharged from the drainage holes, it flows into the drainage groove, and then flows to the drainage ditch through the drainage groove. The accumulated water in the drainage pipe also flows to the drainage ditch through the drainage groove, which speeds up the discharge speed of water on the road surface. The setting can make the accumulated water in the installation groove drain out of the installation groove more quickly.

Description of drawings

1 is a cross-sectional view of a permeable roadbed protective structure;

Fig. 2 is the partial enlarged schematic diagram of A part in Fig. 1;

Fig. 3 is the schematic diagram of the drainage screen of the permeable roadbed protection structure;

Figure 4 is a top view of the permeable roadbed protection structure;

Fig. 5 is a schematic diagram of a reinforcement block of the protective structure of the permeable roadbed.

In the figure, 1, foundation; 2, roadbed; 3, shoulder slope; 4, shoulder protection slope; 5, protection slope; 6, guardrail; 7, waterproof board; 8, permeable asphalt pavement; 9, drainage hole; 10. Permeable membrane; 11. Water collection pipe; 12. Drainage pipe; 13. Drainage groove; 14. Drainage ditch; 15. Drainage outlet; 20. Soil layer; 21. Installation slot; 22. Reinforcement block; 23. Drainage hole; 24. Subgrade concrete layer;

Detailed ways

The present utility model will be described in further detail below in conjunction with the accompanying drawings.

Referring to FIG. 1, it is a permeable roadbed protection structure disclosed by the utility model, comprising a roadbed 2 and a road shoulder slope 3 laid longitudinally on the foundation 1, and the road shoulder slope 3 is located on both sides of the roadbed 2, and is opposite to the roadbed 2. Both side walls fit together. A waterproof board 7 is laid on the surface of the roadbed 2 , and a water-permeable asphalt pavement 8 is arranged on the waterproof board 7 . A shoulder protective slope 4 is laid on the road shoulder side slope 3 , a protective slope 5 is laid on the road shoulder protective slope 4 , and the upper surface of the permeable asphalt pavement 8 is connected with the slope top of the protective slope 5 . A guardrail 6 is fixed on the edge of the permeable asphalt pavement 8, and the guardrail 6 is arranged vertically.

Referring to FIGS. 1 and 2 , the permeable asphalt pavement 8 is vertically provided with a drainage hole 9 penetrating the permeable asphalt pavement 8 . The surface of the waterproof board 7 is covered with a permeable membrane 10 , the permeable membrane 10 is located between the waterproof board 7 and the permeable asphalt pavement 8 , and the lower end of the drainage hole 9 is attached to the permeable membrane 10 . Several water collecting pipes 11 are vertically arranged in the roadbed 2 , the water collecting pipes 11 vertically penetrate the side of the waterproof board 7 , the outer side wall of the water collecting pipes 11 and the side wall of the waterproof board 7 are sealed and matched, and the upper end of the water collecting pipes 11 is attached to the permeable membrane 10 . . Drainage pipes 12 are embedded horizontally in the roadbed 2 and the shoulder protection slope 4. The lower end of the water collecting pipe 11 is connected with the drainage pipe 12, and the drainage pipe 12 is connected with the slopes of the protection slopes 5 on both sides.

The water permeable asphalt pavement 8 is mainly composed of coarse aggregates with a single particle size, and the main component of the water permeable asphalt pavement 8 is graded asphalt mixture, so that the water permeable asphalt pavement 8 has good water permeability and can quickly remove water from the road surface. It is drained from the inside of the permeable asphalt pavement 8 . The accumulated water passes through the inside of the permeable asphalt pavement 8 and the drainage holes 9 to quickly drain the accumulated water on the road surface. When the accumulated water flows to the bottom of the drainage hole 9, the accumulated water penetrates to the surface of the waterproof board 7 through the permeable membrane 10, and the permeable membrane 10 can make the water flow on the surface of the waterproof board 7. When the water flow flows to the water inlet of the water collecting pipe 11, the water flow enters In the water collection pipe 11 , the water flows along the water collection pipe 11 to the drain pipe 12 , and finally flows to the slope of the protective slope 5 .

Referring to FIGS. 2 and 3 , the bottom of the guardrail 6 is provided with longitudinally arranged drainage ports 15 , and the drainage ports 15 communicate with the surface of the permeable asphalt pavement 8 . The accumulated water on both sides of the permeable asphalt pavement 8 flows through the drainage port 15 at the bottom of the guardrail 6 , and the accumulated water is discharged to the slope of the guard slope 5 through the drainage port 15 .

A drainage groove 13 is opened on the slope of the protective slope 5 , and the water inlet of the drainage groove 13 is located at the top of the slope of the protective slope 5 . Drainage grooves 14 are opened on the foundation 1. The drainage grooves 14 are located on both sides of the roadbed 2. The longitudinal direction of the drainage grooves 14 is perpendicular to the longitudinal direction of the drainage grooves 13. The water flow in the drainage grooves 13 flows from the bottom end of the drainage grooves 13 to the drainage grooves. within 14. The drain pipe 12 and the drain groove 13 are connected, and the water in the drain pipe 12 is discharged from the water outlet of the drain pipe 12 into the drain groove 13 , and finally flows to the drain groove 14 .

A support groove 16 is provided at the lower end of the drainage groove 13 , and the support groove 16 is located above the drainage groove 14 . The branch groove 16 can play a certain role in diverting the flow. When the water flow in the drainage groove 13 is relatively turbulent, the branch groove 16 can slow down the flow velocity of the water flow in the drainage groove 13, reduce the scouring of the water flow to the downstream of the drainage groove 13, and play a role in the protection slope 5. to a certain degree of protection.

2, the road shoulder protection slope 4 includes a road shoulder concrete layer 17, a metal mesh 18, a waterproof membrane 19 and a soil layer 20 laid from bottom to top. The road shoulder concrete layer 17, the metal mesh 18, the waterproof membrane 19 and the soil layer 20 are The metal mesh 18 is pre-buried in the road shoulder concrete layer 17 , and the road shoulder concrete layer 17 is laid on the surface of the road shoulder side slope 3 .

The road shoulder concrete layer 17 has high strength, which can increase the strength of the road shoulder protection slope 4. The setting of the waterproof membrane 19 can prevent the accumulation of water from infiltrating into the road shoulder concrete layer 17, and has a certain protective effect on the road shoulder protection slope 4. The road shoulder concrete layer A metal mesh 18 is pre-embedded in 17, and the arrangement of the metal mesh 18 is beneficial to improve the strength and stability of the concrete layer 20, and can improve the protection ability of the protective structure to the shoulder slope 3 and the roadbed 2.

3 , the protective slope 5 is laid on the surface of the soil layer 20 , and the surface of the protective slope 5 is inclined with an installation groove 21 . The two opposite side walls of the installation groove 21 are arranged in a curved manner. The hexagonal reinforcement blocks 22 stacked on each other are arranged in the installation groove 21. The reinforcement blocks 22 are stacked in the installation groove 21, and the outer side walls of the reinforcement blocks 22 are in contact with the side walls of the installation groove 21. The reinforcing blocks 22 are in contact with each other. The arrangement of the reinforcement blocks 22 can increase the structural strength of the protective slope 5 , thereby increasing the strength of the road shoulder side slope 3 and the road shoulder protective slope 4 .

3 and 4 , the side walls of the reinforcement blocks 22 are provided with water-repellent holes 23. When the outer side walls of the two reinforcement blocks 22 abut each other, the water-repellent holes 23 on the two reinforcement blocks 22 are in a connected state, allowing Water flows through. The arrangement of the water-repellent holes 23 can make the accumulated water in the installation groove 21 drain out of the installation groove 21 quickly and quickly, thereby improving the drainage performance.

1 , the roadbed 2 includes a roadbed concrete layer 24, a fine-grained gravel layer 25 and a gravel cushion 26 laid from bottom to top, the roadbed concrete layer 24 is laid on the surface of the roadbed 2, and the waterproof board 7 is laid on the gravel cushion On the surface of the subgrade 26, the drainage pipe 12 is arranged in the fine sand and gravel layer 25, and the subgrade concrete layer 24 has greater strength, which can increase the compression resistance and load-bearing performance of the subgrade 2.

The implementation principle of this embodiment is: the accumulated water flows to the surface of the waterproof board 7 through the interior of the permeable asphalt pavement 8 and the drainage holes 9, the accumulated water penetrates into the water collecting pipe 11 through the permeable membrane 10, and the accumulated water flows along the water collecting pipe 11, After that, it is collected in the drainage pipe 12 and then flows to the drainage groove 13, while the accumulated water on both sides of the permeable asphalt pavement 8 flows into the drainage groove 13 through the drainage port 15 at the bottom of the guardrail 6, and finally flows to the drainage ditch 14, and finally flows to the drainage ditch 14.

The examples of this specific embodiment are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore: all equivalent changes made according to the structure, shape and principle of the present invention are not It should be covered within the protection scope of the present invention.

Claims (7)

1. A permeable roadbed protection structure, comprising a roadbed (2) and a road shoulder slope (3) laid on the foundation (1), the road shoulder slope (3) being located on the opposite two side walls of the roadbed (2), so The road shoulder side slope (3) is provided with a road shoulder protection slope (4), and the road shoulder protection slope (4) is provided with a protective slope (5); it is characterized in that: the surface of the roadbed (2) is laid with a waterproof board ( 7), the water-permeable membrane (10) is laid on the surface of the waterproof board (7), the permeable asphalt pavement (8) is laid on the surface of the permeable membrane (10), and the edge of the permeable asphalt pavement (8) is provided with A guardrail (6), the bottom of the guardrail (6) is provided with a plurality of drainage ports (15), the drainage ports (15) are communicated with the surface of the water-permeable asphalt pavement (8), and the water-permeable asphalt pavement (8) Drain holes (9) are vertically opened through the permeable asphalt pavement (8), and a plurality of water collection pipes (11) are arranged in the roadbed (2), and the water collection pipes (11) pass through the The waterproof plate (7) is sealed and matched with the side wall of the waterproof plate (7), a drainage pipe (12) is arranged in the roadbed (2), and the drainage pipe (12) extends out of the protective slope (5) The surface of the water collecting pipe (11) is connected with the drain pipe (12), and the drain pipe (12) is connected with the surface of the protective slope (5). 2. A permeable roadbed protection structure according to claim 1, characterized in that: the road shoulder protection slope (4) comprises a road shoulder concrete layer (17), a metal mesh (18), a waterproof membrane laid from bottom to top (19) and the soil layer (20), the road shoulder concrete layer (17), the metal mesh (18), the waterproof membrane (19) and the soil layer (20) are all arranged in an inclined manner, and the metal mesh (18) is arranged on the Inside the road shoulder concrete layer (17), the road shoulder concrete layer (17) is laid on the surface of the road shoulder side slope (3). 3. A permeable roadbed protective structure according to claim 2, characterized in that: the protective slope (5) is arranged on the soil layer (20), and the top surface of the protective slope (5) is inclined and provided with installation grooves (21), the inclination angle of the slope surface of the installation groove (21) is the same as the inclination angle of the slope surface of the protection slope (5), and the opposite side walls of the installation groove (21) are curved. A plurality of hexagonal reinforcement blocks (22) are arranged in the groove (21), the reinforcement blocks (22) are stacked on the surface of the installation groove (21), and the outer side walls of the reinforcement blocks (22) are connected to the installation groove (21). The side walls of the grooves (21) are in contact with each other, and the outer side walls of the adjacent reinforcing blocks (22) are in contact with each other. 4. A permeable roadbed protection structure according to claim 3, characterized in that: a drainage groove (13) is provided on the surface of the protection slope (5), and the drainage groove (13) is located in the installation groove (21). ) on both sides of the drainage groove (13), the water inlet of the drainage groove (13) is located at the top of the shoulder protection slope (4), the drainage pipe (12) is communicated with the drainage groove (13), and the foundation (1) is provided with a drainage ditch ( 14), the drainage ditch (14) is located on both sides of the roadbed (2), and the drainage ditch (13) communicates with the drainage ditch (14). 5. A permeable roadbed protection structure according to claim 4, characterized in that: the lower end of the drainage groove (13) is provided with a branch groove (16), and the branch groove (16) is connected with the drainage ditch (14) Pass. 6. A water-permeable roadbed protection structure according to claim 4, characterized in that: the reinforcing block (22) is provided with a plurality of hydrophobic holes (23). 7. A permeable roadbed protection structure according to claim 1, characterized in that: the roadbed (2) comprises a roadbed concrete layer (24), a layer of fine sand and gravel (25) and crushed stones laid from bottom to top The cushion layer (26), the roadbed concrete layer (24) is laid on the surface of the foundation (1), and the drainage pipe (12) is arranged in the fine sand and gravel layer (25).

Images