Reinforced pervious concrete pavement structure

Abstract

The utility model relates to the technical field of pavement structures and water prevention and drainage, and particularly discloses a reinforced pervious concrete pavement structure, which comprises a cushion layer, a subbase layer, a base layer, a reinforced pervious concrete surface layer and a pavement protection layer, a drainage layer with a drainage pipe is laid between the base layer and the pervious concrete surface layer, the upper layer of the drainage layer is made of pervious materials, and the lower layer of the drainage layer is made of pervious materials. The lower layer is made of waterproof materials and tightly attached to the drainage pipes, soil particles can be prevented from blocking the drainage pipes, drainage grooves are symmetrically formed in the two sides, base layer water inflow is reduced, the roadbed soil strength is affected, and the effect of collecting rainwater is achieved. The reinforced pervious concrete surface layer is formed by pervious concrete added with double layers of geogrids, so that the strength and rigidity of the pavement are improved, the pavement is effectively prevented from cracking, the water permeability of the pavement is enhanced, and meanwhile, the surface layer protection layer is added at the top end of the pavement, so that the functions of acid resistance, alkali resistance, wear resistance, ultraviolet resistance and the like are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of pavement structure and drainage prevention, and in particular to a reinforced permeable concrete pavement structure. Background Art

[0002] my country is vigorously developing sponge cities. Permeable concrete pavements, owing to their excellent permeability and sound absorption and noise reduction properties, are widely used in urban road construction. Compared to traditional asphalt concrete pavements, the continuous voids in permeable concrete pavements effectively mitigate road surface flooding and water damage caused by precipitation. Furthermore, the porous pavement structure absorbs sound and reduces noise, contributing to the reduction of urban noise pollution. However, permeable concrete itself has poor crack resistance and low strength, making it unsuitable for everyday road surfaces. It is primarily used on sidewalks, non-motorized vehicle lanes, and parking lots.

[0003] In the prior art, for example, the utility model with application number 202122570342.5 discloses an anti-clogging permeable concrete pavement structure, comprising a permeable concrete surface layer, a permeable concrete base layer, a cushion layer and a compacted soil layer stacked from top to bottom, a first filter layer is provided between the permeable concrete surface layer and the permeable concrete base layer, and the first filter layer can block the passage of sediment. By providing the first filter layer between the permeable concrete surface layer and the permeable concrete base layer, the passage of sediment is blocked. The pavement structure of this prior art is mainly used to solve the problem that under frequent traffic loads, the pavement structure generates sediment and clogs the permeable structure, but ignores the problem of insufficient load resistance that is more likely to occur under frequent traffic loads; at the same time, its drainage method only sets a drainage channel on one side, and cannot solve the drainage problem in other places. Utility Model Content

[0004] The purpose of the utility model is to provide a reinforced permeable concrete pavement structure to solve the problem of insufficient strength of the permeable concrete pavement structure proposed in the background art.

[0005] To achieve the above-mentioned objectives, the utility model provides a reinforced permeable concrete pavement structure, comprising a cushion layer, a subbase layer, a base layer, a drainage layer and a permeable concrete surface layer stacked in sequence from bottom to top, the drainage layer comprising a permeable geotextile layer laid on top, an impermeable geotextile layer laid underneath and a drainage pipe wrapped between the permeable geotextile layer and the impermeable geotextile layer; at least one layer of geogrid is provided in the permeable concrete surface layer, and a pavement protection layer is provided on the top of the permeable concrete surface layer.

[0006] Furthermore, the drainage pipe is composed of a plurality of parallel unit drainage pipes, each of which has a semicircular radial cross-section. Two adjacent unit drainage pipes are fixedly connected, and the top opening of the unit drainage pipe is connected to the permeable geotextile layer, and the impermeable geotextile layer is covered on the bottom of the drainage pipe.

[0007] Furthermore, drainage grooves connected to the drainage pipe are provided on both sides of the drainage layer for collecting water discharged from the drainage pipe.

[0008] Furthermore, two layers of geogrids are provided in the permeable concrete surface layer, which are respectively provided at positions of 1 / 4 to 2 / 5 and 3 / 5 to 3 / 4 of the height of the permeable concrete surface layer.

[0009] Furthermore, the two layers of geogrids are respectively arranged at 1 / 3 and 2 / 3 of the height of the permeable concrete surface layer.

[0010] Furthermore, the pavement protection layer is a coating layer provided on the top surface of the permeable concrete surface layer.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] (1) The utility model provides a reinforced permeable concrete pavement structure, which can greatly improve the strength and stiffness of the surface layer and the permeability of the concrete, and to a certain extent can prevent the occurrence of adverse diseases such as cracking and sinking of the permeable concrete pavement, and accelerate the discharge of surface water.

[0013] (2) In the reinforced permeable concrete pavement structure of the present invention, the drainage pipes and geotextiles arranged between the surface layer and the base layer can effectively prevent the accumulated water from entering the base layer, thereby protecting the roadbed in a good working condition. The drainage grooves on both sides can collect the accumulated water, effectively improving its utilization rate.

[0014] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure of a reinforced permeable concrete pavement structure of the present utility model;

[0017] Figure 2This is a schematic cross-sectional view of a reinforced permeable concrete pavement structure of the present invention;

[0018] Figure 3 This is a schematic diagram of the drainage layer structure of a reinforced permeable concrete pavement structure of the present invention;

[0019] Figure 4 It is a cross-sectional schematic diagram of the geogrid in the utility model;

[0020] Among them, 1- cushion layer; 2- subbase layer; 3- base layer; 4- drainage layer; 41- permeable geotextile layer; 42- impermeable geotextile layer; 43- drainage pipe; 44- drainage trough; 5- permeable concrete surface layer; 51- geogrid; 6- pavement protection layer. DETAILED DESCRIPTION

[0021] The following is a detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0022] See Figures 1 to 4 This embodiment provides a reinforced permeable concrete pavement structure, including a cushion layer 1, a subbase layer 2, a base layer 3, a drainage layer 4, a permeable concrete surface layer 5 and a pavement protection layer 6; the specific structure is as follows:

[0023] The cushion layer 1, subbase layer 2, base layer 3, drainage layer 4, and permeable concrete surface layer 5 are stacked in sequence from bottom to top. The cushion layer 1 and subbase layer 2 can be made of crushed stone or recycled aggregate from construction waste, and the base layer 3 can be made of graded crushed stone or cement-stabilized soil. The drainage layer 4 includes a permeable geotextile layer 41, an impermeable geotextile layer 42, a drainage pipe 43, and a drainage trough 44. The permeable geotextile 41 and the impermeable geotextile 42 wrap the drainage pipe 43 in the middle, with the permeable geotextile 41 arranged at the top. After passing through the permeable concrete surface layer 5, rainwater flows into the drainage pipe 43 through the permeable geotextile 41. The drainage pipe 43 is connected to two drainage troughs 44 at its two ends, respectively, to drain or collect the rainwater that has passed through it. The impermeable geotextile 42 acts as a waterproof layer, ensuring the dryness of the base layer 3 below. In this structural setting, a drainage pipe is provided. The drainage pipe 43 is composed of a plurality of parallel unit drainage pipes. The unit drainage pipes are PVC pipes with a semicircular radial cross-section. The top side of two adjacent unit drainage pipes is fixedly connected. The top opening of the unit drainage pipe is connected to the permeable geotextile layer 41, and the impermeable geotextile layer 42 is tightly wrapped around the bottom of the drainage pipe 43. Drainage grooves 44 are provided on both sides of the drainage pipe 43 to more conveniently solve the drainage problem. Two layers of geogrid 51 are provided in the permeable concrete surface layer 5, respectively arranged at 1 / 4 to 2 / 5 and 3 / 5 to 3 / 4 of the height of the permeable concrete surface layer 5. Preferably, a layer of bidirectional geogrid 51 is laid at 1 / 3 and 2 / 3 of the layer height of the permeable concrete surface layer 5. The geogrid, as a reinforcement material, can improve the strength and rigidity of the permeable concrete surface layer 5. A layer of protective coating is also applied on the permeable concrete surface layer 5 as a road surface protection layer 6, which has the functions of acid resistance, alkali resistance, wear resistance, and UV resistance.

[0024] The working principle of the reinforced permeable concrete pavement structure of the present invention is as follows: first, a cushion layer 1, a subbase layer 2, and a base layer 3 are laid, and the area to be laid is limited; then, a drainage layer 4 is laid, wherein an impermeable geotextile 42 is first placed tightly under a drainage pipe 43, and a permeable geotextile 41 is laid above it, and drainage grooves are excavated at both ends of the length direction of the drainage pipe 43. Rainwater that seeps down flows into the drainage pipe 43 through the permeable geotextile 41, and the drainage pipe 43 discharges the rainwater into the drainage groove 44. The drainage groove 44 discharges the collected rainwater at a fixed point, preventing the rainwater from soaking the underground soil layer, protecting the firmness of the foundation soil layer, and recycling the collected rainwater. A permeable concrete surface layer 5 is laid above the drainage layer 4, and when laying, it is important to fill the geogrid 51 at the layer height of 1 / 3 and 2 / 3. Finally, a layer of protective coating is applied to the top of the road surface as the road surface protection layer 6.

[0025] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A reinforced permeable concrete pavement structure, characterized in that: The invention comprises a cushion layer (1), a subbase layer (2), a base layer (3), a drainage layer (4) and a permeable concrete surface layer (5) which are stacked in sequence from bottom to top, wherein the drainage layer (4) comprises a permeable geotextile layer (41) laid on top, an impermeable geotextile layer (42) laid on the bottom, and a drainage pipe (43) wrapped between the permeable geotextile layer (41) and the impermeable geotextile layer (42); at least one layer of geogrid (51) is provided in the permeable concrete surface layer (5), and a road surface protection layer (6) is provided on the top of the permeable concrete surface layer (5).

2. A reinforced permeable concrete pavement structure according to claim 1, characterized in that: The drainage pipe (43) is composed of a plurality of parallel unit drainage pipes, each of which has a semicircular radial cross-section. Two adjacent unit drainage pipes are fixedly connected, and the top opening of the unit drainage pipe is connected to the permeable geotextile layer (41). The impermeable geotextile layer (42) is covered on the bottom of the drainage pipe (43).

3. A reinforced permeable concrete pavement structure according to claim 2, characterized in that: Drainage grooves (44) connected to the drainage pipe (43) are also provided on both sides of the drainage layer (4) for collecting water discharged from the drainage pipe.

4. The reinforced permeable concrete pavement structure according to claim 1, characterized in that: Two layers of geogrids (51) are provided in the permeable concrete surface layer (5), which are respectively provided at positions 1 / 4 to 2 / 5 and 3 / 5 to 3 / 4 of the height of the permeable concrete surface layer (5).

5. A reinforced permeable concrete pavement structure according to claim 4, characterized in that: The two layers of geogrids (51) are respectively arranged at 1 / 3 and 2 / 3 of the height of the permeable concrete surface layer (5).

6. The reinforced permeable concrete pavement structure according to claim 1, characterized in that: The road surface protection layer (6) is a coating layer provided on the top surface of the permeable concrete surface layer (5).

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