CN217869799U - Low-maintenance urban landscape ecological ground - Google Patents

Abstract

The utility model provides a low city view ecological ground of maintaining relates to sponge city technical field, and the main objective provides one kind and has certain bearing capacity and the lower ecological ground of fortune dimension cost. The low-maintenance urban landscape ecological ground comprises a surface layer, a pervious concrete cushion layer and a base layer, wherein the pervious concrete cushion layer is positioned between the surface layer and the base layer; the upper surface of the pervious concrete cushion layer is provided with a pervious cushion, and the surface layer is positioned above the pervious cushion; the facing layer is made of a particulate solid material. The surface layer made of the granular solid material has better water seepage capability, and water falling on the surface layer can quickly seep downwards and flows into the permeable concrete cushion layer and the base layer through the permeable cushion; the pervious concrete cushion can effectively improve the support and strength of the ground, so that the pervious concrete cushion has better bearing performance, can be used for laying greenbelts, sidewalks and even roadways, and has a larger application range.

Description

Low-maintenance urban landscape ecological ground

Technical Field

The utility model belongs to the technical field of the sponge city technique and specifically relates to a low city view ecological ground who maintains.

Background

At present, the area ratio of sponges such as garden greenbelts in parks is steadily increased along with the development of cities, and meanwhile, a large number of industrial and logistics parks are gradually improved towards the development direction of sponge greening with high greening and high water storage.

The patent with publication number CN207960077U discloses an ecological parking lot practice, although the patent provides a concept that gravel ground is used as a parking space, and gravel grass planting ditches are used as drainage measures to drain surface runoff, the ground still has the defects of no water storage capacity, incapability of large-area continuous use, and need of nesting corresponding greenbelts, grass planting ditches and the like for matching use; the patent with the publication number of CN208701843U discloses a rainwater pollutant retention facility for a sponge city, the scheme has a complex structure, regular maintenance and cleaning are needed, and the later operation and maintenance cost is high; the patent with publication number CN109235187a discloses a permeable pavement paving method with easy construction and landscape effect, which provides a design and construction scheme suitable for landscape pavement, but the scheme has relatively poor applicability, cannot be used for common pavement and green land, and has a complex construction process.

Aiming at the problems, the requirements of high water permeability and high infiltration speed of sponge cities are met, and the ecological ground which is low in operation and maintenance cost and wide in adaptability needs to be researched and developed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a low city view ecological ground of maintaining to solve the higher and poor technical problem of adaptability of ecological road surface fortune dimension cost that exists among the prior art. The utility model provides a plurality of technical effects that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a low-maintenance urban landscape ecological ground, which comprises a surface layer, a permeable concrete cushion layer and a base layer, wherein the permeable concrete cushion layer is positioned between the surface layer and the base layer; the upper surface of the pervious concrete cushion layer is provided with a pervious cushion, and the surface layer is positioned above the pervious cushion; the facing layer is made of a particulate solid material.

The surface layer made of the granular solid material has better water seepage capability, and water falling on the surface layer can quickly seep downwards and flows into the permeable concrete cushion layer and the base layer through the permeable cushion; the pervious concrete cushion can effectively improve the support and strength of the ground, so that the pervious concrete cushion has better bearing performance, can be used as a landscape green land, a pedestrian path, even a slow-moving motor way or a parking lot and the like, and has wider application range.

On the basis of the technical scheme, the utility model discloses can also do following improvement.

As a further improvement, the water permeable pad comprises at least one layer of non-woven fabric. The non-woven fabrics have better bearing nature and better water permeability, not only can help separating the surface course and the concrete cushion that permeates water, avoid the intraformational particulate matter of surface to get into the concrete cushion that permeates water in situ, still be favorable to the intraformational underwater infiltration of surface simultaneously to reach better infiltration, the effect of permeating water, impurity such as silt that simultaneously also can keep apart the rainwater and bring.

As a further improvement of the utility model, the surface layer comprises gravels and/or gravels.

The gravel and the gravel are both granular, and both have better strength and water permeability, so the gravel and the gravel can be used as pavement materials to be paved on a surface layer.

As a further improvement, the utility model is directed to the pedestrian ground, a footpath is also arranged on the surface layer.

The pavement structure arranged on the surface layer can provide better foot feeling for passers-by, and the passers-by can conveniently and safely pass over the ground.

As a further improvement of the utility model, the footpath is at least one of a stating step, a suspension floor and an ecological wood floor. The materials are common footpath materials and can be conveniently and directly paved on a surface layer.

As the utility model discloses a further improvement, to greenery patches, pedestrian's ground, the concrete that permeates water (the plain color concrete that permeates water promptly) that the concrete cushion that permeates water made by cooperation such as cement and stone aggregate has better support strength and compressive strength to effectively improve the durability on this ground. When formulated, a certain gap should be left between the aggregates.

As a further improvement of the utility model, aiming at the running ground of the motor vehicle, a graded broken stone cushion layer is also arranged between the permeable concrete cushion layer and the base layer; the pervious concrete cushion is made of reinforced pervious concrete.

The pervious concrete cushion layer made of the reinforced pervious concrete has higher strength and can be used for supporting a motor vehicle; the graded broken stone cushion layer below the permeable concrete cushion layer can ensure the stability of the roadbed, so that the paved ground is more stable.

As a further improvement, the vertical lining up of concrete cushion that permeates water is provided with flexible settlement joint, the quantity of flexible settlement joint is at least one just flexible settlement joint is followed the length or the width direction of concrete cushion that permeates water distributes.

The expansion/settlement joint can prevent the permeable concrete cushion from being damaged due to climate temperature change (thermal expansion and cold contraction) or due to uneven settlement of the foundation caused by rain erosion. The number and distribution intervals of the expansion/settlement joints on the pervious concrete bedding can be determined according to the continuous laying area.

As a further improvement of the utility model, the distance between two adjacent expansion/settlement joints is at least 6m; and/or the width of the telescopic/settlement joint is 20-30 mm.

The parameter can reasonably avoid structural damage of the pervious concrete cushion layer due to temperature change or foundation subsidence.

As a further improvement of the utility model, a filler is arranged in the telescopic/settlement joint. The filler can keep the upper end of the expansion/settlement joint flat and seamless, and can provide a space for the pervious concrete cushion layer to deform due to expansion with heat and contraction with cold.

Compared with the prior art, the utility model discloses the low city view ecological ground of maintaining that the embodiment of preferred provided mainly includes basic unit, the concrete cushion that permeates water, the pad and the surface course four bibliographic categories branch that permeates water. The ground can be used as a leisure ecological landscape scene, and has the advantages of strong applicability, simple and convenient construction, extremely low operation and maintenance cost and even no operation and maintenance cost. Specifically, the method comprises the following steps:

1. the expression effect is good, and applicable scene is various: the technical proposal of the utility model discloses that the surface material is not limited to the gravel or gravel, any granular solid material can be used as the surface material, and when the surface material is used as the pedestrian road surface, landscape ground pavement such as a stating step, a suspension floor, an ecological wood floor and the like can be added on the surface material; therefore, the ground can be widely applied to landscape scenes such as ecological walking footpaths, ecological parking lots, ecological ridges, sponge greenbelts, dry mountain water signs, hydrophilic revetments and the like, and can obtain good landscape effect even if being singly used.

2. Simple structure, the large tracts of land of being convenient for is under construction: compared with the common landscape hard floor paving method, the floor has the advantages that the surface layer materials are scattered and do not need to be spliced, the processes are few, the construction precision requirement is low, continuous and rapid large-area construction is facilitated, and the method is more suitable for project engineering construction of municipal parks, road greenbelts, factories and mines greenbelts and the like.

3. The operation and maintenance cost is low: because the aquifer (soil) is deeply crossed with the ground, although a small amount of local deep-rooted plants cannot be completely eliminated from growing, the plant root system is difficult to grasp and attach due to the fact that surface crushed stones or gravel surface layers are very loose, and the attached plants are easy to pull out. Therefore, the normal use of the field can be guaranteed by organizing the cleaning once every year.

4. Daily repair is not needed, and the overhaul cost is low: because the surface layer is spread in a scattered way, any local cracking and small-area uneven settlement of the cushion layer can not cause negative influence on the ground effect, namely, the maintenance is not needed within the designed service life. According to different specific conditions of accumulation of the carried pollution particles due to atmospheric wet settlement, the surface layer exceeding the design service life is excavated and cleaned, the cleaned surface layer material is backfilled after the non-woven fabric is replaced, and overhaul and renovation can be completed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of a first embodiment of the ecological ground of the low-maintenance urban landscape of the invention;

FIG. 2 is a schematic structural diagram of a second embodiment of the ecological ground of the low-maintenance urban landscape of the invention;

fig. 3 is a schematic structural diagram of a third embodiment of the low-maintenance urban landscape ecological ground.

In the figure: 1. a surface layer; 2. a pervious concrete cushion; 21. non-rib pervious concrete; 22. pervious concrete of reinforcing steel bars; 3. a base layer; 4. a water permeable cushion; 5. graded broken stone cushion layer; 6. expansion/settlement joints; 7. and (5) ramming the base layer with plain soil.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and for simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as the case may be, by those of ordinary skill in the art.

FIG. 1 is a schematic structural view of a first embodiment of the low-maintenance urban landscape ecological ground of the utility model; it can be seen that the ground is now a ground structure without load bearing properties.

FIG. 2 is a schematic structural view of a second embodiment of the low-maintenance urban landscape ecological ground of the present invention; compared with the figure 1, the ground is a pavement which has certain bearing capacity and can be used for people to walk.

FIG. 3 is a schematic structural view of a third embodiment of the low-maintenance urban landscape ecological floor of the present invention; compared with fig. 2, the ground has stronger bearing capacity and can be used for motor vehicles to pass through.

The technical solution of the present invention will be explained below with reference to the accompanying drawings.

The utility model provides a low maintenance urban landscape ecological ground, which comprises a surface layer 1, a permeable concrete cushion layer 2 and a base layer 3, wherein the permeable concrete cushion layer 2 is positioned between the surface layer 1 and the base layer 3; the upper surface of the pervious concrete cushion layer 2 is provided with a pervious cushion 4, and the surface layer 1 is positioned above the pervious cushion 4; the facing layer 1 is made of a granular solid material.

The surface layer 1 made of granular solid materials has better water seepage capability, and water falling on the surface layer 1 can quickly seep downwards and flow into the permeable concrete cushion layer 2 and the base layer 3 through the permeable cushion 4; the pervious concrete cushion layer 2 can effectively improve the support and strength of the ground, so that the pervious concrete cushion layer has better bearing performance, can be used as a landscape green land, a pedestrian path, even a slow-moving motor way or a parking lot and the like, and has wider application range.

As an alternative embodiment, the water-permeable mat 4 comprises at least one layer of nonwoven fabric. The non-woven fabrics has better bearing nature and better water permeability, not only can help separating surface course 1 and concrete cushion 2 that permeates water, avoids in the particulate matter entering concrete cushion 2 that permeates water in the surface course 1, still helps the underwater seepage in the surface course 1 simultaneously to reach better infiltration, the effect of permeating water, impurity such as silt that simultaneously also can keep apart the rainwater and bring.

As an alternative embodiment, the facing 1 comprises crushed stone and/or gravel.

The gravel and the crushed stone are both granular and have better strength and water permeability, so the gravel and the crushed stone can be used as pavement materials to be paved on the water-permeable cushion 4 to form the surface layer 1.

Example 1:

the utility model provides a low city view ecological ground of maintaining, as shown in FIG. 1, this ground is afforestation ground, is surface course 1 from top to bottom in proper order, permeates water and fills up 4, permeate water concrete cushion 2 and basic unit 3, and wherein surface course 1 comprises rubble and/or gravel, and the pad 4 of permeating water is made by the non-woven fabrics. The pervious concrete cushion 2 between the base layer 3 and the surface layer 1 can become a separation transition space between a soil layer and the ground, and prevents the surface layer 1 from forming a gravel slurry mixture after being soaked by rainwater for a long time. For convenience of construction, the base layer 3 is a plain soil base layer and does not need to be tamped.

Specifically, the particle size of the gravel used in the surface layer 1 is 30-40 mm, the particle size of the gravel is 10-15mm, and the total thickness of the surface layer 1 formed by mixing the gravel and the gravel is not less than 100mm.

As an alternative embodiment, the pervious concrete pad 2 is made of non-reinforced pervious concrete 21.

The non-rib pervious concrete 21 is formed by mixing cement, stone aggregate and the like, and a certain gap is reserved between adjacent aggregates for water permeability, so that the concrete has better water permeability. This water permeability can make the rivers that fall on surface course 1 can be very fast through permeating water pad 4 and permeating water concrete bed course 2 inflow basic unit 3 in to make the road surface have better infiltration speed, cooperate other sponge urban facilities to form a large-scale sponge unit simultaneously.

Specifically, the thickness of the pervious concrete cushion layer 2 is 100-200 mm, and C20 pervious concrete is selected.

The pervious concrete cushion 2 is vertically provided with telescopic/settlement joints 6 in a through mode, the number of the telescopic/settlement joints 6 is at least one, the telescopic/settlement joints 6 are arranged along the length or width direction of the pervious concrete cushion 2 and form a structure similar to a # -shaped grid, and the pervious concrete cushion 2 is cut into bean curd blocks by the telescopic/settlement joints 6.

The expansion/settlement joint 6 can prevent the pervious concrete cushion 2 from being damaged due to climate temperature change (thermal expansion and cold contraction) or due to uneven settlement caused by rain erosion, so that the ground engineering can be kept stable for a long time.

The number and the distribution intervals of the expansion/contraction joints 6 on the pervious concrete mats 2 can be determined according to the continuous laying area. In the present embodiment, the distance between two adjacent expansion/settlement joints 6 is at least 6m and the expansion/settlement joints are arranged in two directions; the width of the expansion/settlement joint 6 is 20-30 mm.

The parameter can reasonably avoid structural damage of the pervious concrete cushion 2 caused by temperature change or uneven settlement.

As an alternative embodiment, the expansion/settlement joint 6 is provided with a filling. The filler can keep the upper end of the expansion/settlement joint 6 flat and seamless, and can provide a space for the pervious concrete cushion layer 2 to deform due to expansion caused by heat and contraction caused by cold.

Specifically, the filler is hemp thread, asphalt or crushed stone with a particle size of less than 5 mm.

Specifically, the base layer 3 may be subjected to surface loosening treatment, and the thickness of the base layer 3 subjected to surface loosening treatment may be 30 to 50cm.

When the ground is processed, excavation processing needs to be carried out on a foundation trench of a relevant field, and then leveling processing needs to be carried out on a base layer 3 made of plain soil; then pouring the permeable concrete cushion layer 2 on the base layer 3, and after the concrete is hardened and the compressive strength meets the design requirement, bidirectionally cutting the expansion/settlement joint 6 according to the design requirement (for example, the interval is 6 m); and finally, paving non-woven fabrics above the pervious concrete cushion layer 2, and paving the broken stones and/or gravels on the non-woven fabrics flatly according to the design requirement.

During routine maintenance, the surface layer 1 of crushed stones and/or gravels is loose (because the structure of the embodiment does not have the function of holding water), shallow root plants are difficult to adapt, so that plants are basically not attached to the surface layer and grow, and even if native species are attached to the surface layer, the surface layer is small in quantity and small in root holding stress and is easy to remove. Therefore, the ground is cleaned once or twice a year to ensure the normal use of the field. When the ground needs to be updated or replaced on a large scale (the construction frequency is once for five to ten years), the surface layer 1 is only needed to be excavated and cleaned as the construction mode of the surface layer 1 is scattered paving, and the cleaned crushed stone and/or gravel can be backfilled after the non-woven fabric is replaced. Compared with the traditional pavement structure, the operation and maintenance cost of the field is greatly reduced.

Example 2:

the present embodiment 2 is different from embodiment 1 in that: as shown in fig. 2, this embodiment provides a pavement structure that can support the passage of pedestrians, when the base layer 3 is a rammed, plain earth rammed base layer 7.

The rammed plain soil has good stability, and can effectively prevent the foundation from sinking. The ground bearing capacity is improved compared with that of the embodiment 1, and the concrete cushion can be used for bearing pedestrians and non-motor vehicles without breaking and sinking of the pervious concrete cushion 2 or road surface settlement.

In addition, as an optional embodiment, a footpath can be further arranged on the surface layer 1.

The pavement structure arranged on the surface layer 1 can provide better foot feeling for passers-by, and the passers-by can conveniently and safely pass over the ground.

As an alternative embodiment, the walkway is at least one of statin-step, suspended flooring, and ecological wood flooring. The materials are common pavement materials and can be conveniently paved on the surface layer 1.

Because the whole pavement is designed to be permeable so as to ensure that rainwater can smoothly infiltrate, even if non-permeable pavement materials such as granite, square bricks and the like are additionally arranged on the surface layer 1, rainwater can still infiltrate along the pavement along the periphery of the non-permeable pavement materials.

Example 3:

the present embodiment 3 is different from embodiment 2 in that: as shown in fig. 3, the present embodiment provides a road surface structure capable of carrying traffic, in which a pervious concrete pad 2 is made of reinforced pervious concrete 22.

The pervious concrete cushion 2 made of the reinforced pervious concrete 22 has higher strength and better ground bearing capacity, and the supporting strength and the compressive strength of the pavement are greatly improved, so that the pervious concrete cushion can be used as a motor vehicle slow-running lane or a parking lot. In addition, the pervious concrete cushion layer 2 made of the reinforced pervious concrete 22 provides support for the surface layer 1, and simultaneously isolates the plain soil tamped base layer 7 from the surface layer 1, so that the surface layer 1 is guaranteed to sink into the soil by rolling of vehicles, and effective infiltration of rainwater is guaranteed.

In addition, the surface layer made of the particles cannot provide strong friction force for the vehicle, and the purpose of controlling the running speed of the vehicle can be achieved.

In addition, the surface layer 1 in the pavement structure is paved by adopting crushed stones with the particle size of 70-80mm and/or gravels with the particle size of 10-15mm, and the thickness of the surface layer 1 is not less than 200mm.

As an alternative embodiment, a graded broken stone cushion layer 5 is further arranged between the pervious concrete cushion layer 2 and the base layer 3.

The pervious concrete cushion 2 made of the steel bars and the pervious concrete has higher strength and can be used for supporting a motor vehicle; the graded broken stone cushion layer 5 positioned below the pervious concrete cushion layer 2 can ensure the stability of the roadbed, so that the paved ground is more stable.

In addition, because the surface layer 1 is spread in a scattered way, any local cracking and small-area uneven settlement of the pervious concrete cushion layer 2 cannot cause negative influence on the ground effect.

As an alternative embodiment, the thickness of the pervious concrete cushion 2 is not less than 200mm, the strength is not less than C25, and the reinforcing bar requires single-layer bidirectional (double-layer bidirectional).

Specifically, the thickness of the graded crushed stone cushion 5 is not less than 200mm.

When the pavement is paved, a graded broken stone cushion layer 5 is paved on a plain soil compaction base layer 7 which is subjected to tamping treatment and leveling treatment, and then reinforcing steel bars are bound on the graded broken stone cushion layer 5 and pervious concrete is poured to form a pervious concrete cushion layer 2 structure. After the concrete is hardened and the compressive strength of the concrete reaches the design requirement, the telescopic/settlement joint 6 is cut and prepared according to the design requirement and is filled, and then the permeable cushion 4 and the surface layer 1 are sequentially arranged above the reinforced permeable concrete 22.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (9)

1. The low-maintenance urban landscape ecological ground is characterized by comprising a surface layer, a pervious concrete cushion layer and a base layer, wherein the pervious concrete cushion layer is positioned between the surface layer and the base layer;

the upper surface of the pervious concrete cushion layer is provided with a pervious cushion, and the surface layer is positioned above the pervious cushion; the facing layer is made of a particulate solid material.

2. The low-maintenance urban landscape ecological floor according to claim 1, wherein said water-permeable mat comprises at least one layer of non-woven fabric.

3. The low maintenance urban landscape ecological floor according to claim 1, wherein the facing comprises crushed stone and/or gravel.

4. The low-maintenance urban landscape ecological floor according to claim 1, wherein a footpath is further provided on the surface layer.

5. The low-maintenance urban landscape ecological floor according to claim 1, wherein said pervious concrete mats are made of non-reinforced pervious concrete for non-load bearing ground use or non-motor vehicle-shaped load bearing ground use.

6. The low-maintenance urban landscape ecological ground according to claim 1, wherein when used as a load-bearing ground for motor vehicles, a graded broken stone cushion layer is further arranged between the pervious concrete cushion layer and the base layer, and the pervious concrete cushion layer is made of reinforced pervious concrete.

7. The low-maintenance urban landscape ecological ground according to claim 1, wherein the pervious concrete cushion is provided with at least one expansion/settlement joint in a vertical through manner, and the expansion/settlement joints are distributed along the length direction or the width direction of the pervious concrete cushion.

8. The low-maintenance urban landscape ecological floor according to claim 7, wherein the spacing between two adjacent telescopic/settlement seams is at least 6m;

and/or the width of the telescopic/settlement joint is 20-30 mm.

9. The low-maintenance urban landscape ecological floor according to claim 7, wherein a filler is arranged in the expansion/settlement joint.

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