Breathable paving structure for tree root domain range

Abstract

The invention relates to a breathable paving structure for a tree root domain range, which comprises geotechnical cloth, a hollow breathable layer and a spliced and paved prefabricated cover plate which are sequentially arranged on an original soil layer from bottom to top, and the prefabricated cover plate is supported and fixed through a plurality of supporting seats which are arranged at intervals; the supporting seat comprises a first foundation column, a second foundation layer and a connecting plug pin which are vertically arranged in an original soil layer, the first foundation column comprises a cylinder on the lower portion and a T-shaped platform column on the head portion, and the prefabricated cover plate comprises a reinforcing mesh, a concrete layer poured on the reinforcing mesh, ventilation holes and positioning holes; the positioning holes are filled with self-compacting grouting materials, the hollow breathable layer is formed by laying a plurality of mutually-spliced breathable bricks, and through holes are formed in the breathable bricks. The water and air permeability of the paving structure around the ancient and famous trees can be improved, so that the soil environment is improved, and healthy growth of big trees is promoted.

Description

Technical Field

[0001] The invention relates to the technical field of garden construction, in particular to a breathable paving structure used in the root zone of trees. Background Art

[0002] In the process of urbanization, the demand for public spaces such as parks is increasing, while traditional paving methods, such as impermeable stone and concrete structural layers, block the exchange of water and air between the surface and the soil base. This not only prevents rainwater from infiltrating back into the soil, causing the soil structure to become compacted, and reducing soil fertility and organic matter content, but also seriously affects the growth of surrounding large trees and even causes their death, which is particularly evident around ancient and famous trees.

[0003] In order to solve these problems, the existing breathable paving technology generally directly lays breathable bricks with through holes on the soil base to connect the surface and the soil base to achieve the water-permeable and air-permeable effect of the breathable paving. However, these paving structures fit tightly with the soil base, the contact area between the soil base and the air is small, and the water-permeable and air-permeable effect is not ideal. Summary of the invention

[0004] The purpose of the present invention is to propose a breathable paving structure for the root zone of trees, aiming to improve the water permeability and air permeability of the paving structure around ancient and famous trees, thereby improving the soil environment and promoting the healthy growth of large trees.

[0005] To achieve the above-mentioned purpose, the present invention provides a breathable paving structure for the root zone of trees, comprising a geotextile, a hollow breathable layer, and a prefabricated cover plate which are sequentially arranged on the original soil layer from bottom to top, the prefabricated cover plate is supported and fixed by a plurality of support seats arranged at intervals, the support seats are arranged at the splicing positions of the prefabricated cover plates, the support seats comprise a first foundation column vertically arranged in the original soil layer, a second foundation layer arranged in the lower outer layer of the first foundation column, and a connecting pin vertically arranged at the top to connect and fix the prefabricated cover plate, the first foundation column comprises a lower cylinder and a T-stage column at the head, The first foundation column is a reinforced concrete column with a strength grade of C30. C12 steel bars are used in the first foundation column and are penetrated in the cylinder and the T-stage column. The second foundation layer is a gravel layer with a diameter of 20 to 30 mm. The prefabricated cover plate includes a steel mesh, a concrete layer cast on the steel mesh, air holes penetrated in the concrete layer, and a positioning hole corresponding to the position of the connecting pin. The connecting pin is positioned through the positioning hole. The positioning hole is filled with self-compacting grouting material. The hollow air-permeable layer is paved with a plurality of air-permeable bricks spliced ​​together, and the air-permeable bricks are provided with through holes.

[0006] Preferably, the connecting pin is made of C20 steel bars.

[0007] Preferably, the steel mesh is woven from steel bars with a diameter of 6 mm at a pitch of 100 mm.

[0008] Preferably, a dry hard ash bonding layer and a surface layer are sequentially laid on the prefabricated cover plate, the dry hard ash bonding layer is a cement mortar layer, and the surface layer is a wear-resistant and anti-skid material.

[0009] Preferably, the self-compacting grouting material is of C40 grade.

[0010] Preferably, when the prefabricated cover plate is set in the pedestrian area, the thickness is 80 mm, and the steel mesh is set at a position 25 mm from the bottom surface of the concrete layer; when the prefabricated cover plate is set in the vehicle area, the thickness is 150 mm, and the steel mesh is set at a position 25 mm from the bottom surface of the concrete layer.

[0011] Based on the above technical solution, the advantages of the present invention are:

[0012] The breathable paving structure of the present invention makes the air exchange between the surface and the soil base smoother through the design of a reasonably permeable layer, increases the oxygen content in the soil, helps the respiration of tree roots, and promotes the healthy growth of trees. It has important application in urban greening, park construction and the protection of ancient and famous trees. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0014] Figure 1 This is a schematic diagram of the breathable paving structure;

[0015] Figure 2 It is a schematic diagram of the support seat structure;

[0016] Figure 3 This is a schematic diagram of the prefabricated cover structure. DETAILED DESCRIPTION

[0017] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments.

[0018] The present invention provides a breathable paving structure for the root zone of trees, such as Figure 1 to Figure 3 As shown, a preferred embodiment of the present invention is shown.

[0019] like Figure 1As shown, the breathable paving structure includes a geotextile 5, a hollow breathable layer 6, and a prefabricated cover plate 7 which are sequentially arranged on the original soil layer 4 from bottom to top. The prefabricated cover plate 7 is supported and fixed by a plurality of support seats 8 arranged at intervals. The support seats 8 are arranged at the splicing position of the prefabricated cover plate 7. The support seats 8 include a first foundation column 3 vertically arranged in the original soil layer 4, a second foundation layer 2 arranged in the lower outer layer of the first foundation column 3, and a connecting pin 1 vertically arranged at the top to connect and fix the prefabricated cover plate 7. The first foundation column 3 includes a lower cylinder and a T-stage column at the head. The first foundation column 3 is C30 The reinforced concrete column is configured with a strength grade. The first foundation column 3 uses C12 steel bars that are penetrated and arranged in the cylinder and the T-stage column. The second foundation layer 2 is a crushed stone layer with a diameter of 20 to 30 mm. The prefabricated cover plate 7 includes a steel mesh 9, a concrete layer 10 cast on the steel mesh 9, air holes 11 that are penetrated and arranged in the concrete layer 10, and a positioning hole corresponding to the position of the connecting pin 1. The connecting pin 1 is positioned through the positioning hole. The positioning hole is self-filled with a self-compacting grouting material 14. The hollow air-permeable layer 6 is paved with a plurality of air-permeable bricks spliced ​​together, and the air-permeable bricks are provided with through holes.

[0020] The support seat 8 is a key component of the breathable paving structure, which mainly plays the role of supporting and fixing the prefabricated cover plate. Figure 2 As shown, the support seat 8 is composed of the following main elements:

[0021] Connect pin 1:

[0022] Material: Made of C20 steel bars to ensure sufficient bearing capacity and durability.

[0023] Function: The connecting pin is used to firmly fix the prefabricated cover plate on the support base to prevent it from displacement or loosening.

[0024] Second base layer 2:

[0025] Materials: Choose gravel particles that meet the standards, with a diameter between 20 and 30 mm.

[0026] Function: The gravel layer is located at the base of the support seat, and plays the role of drainage, ventilation and enhancing foundation stability.

[0027] First foundation column 3:

[0028] Material: Concrete with strength grade C30.

[0029] Function: Concrete is the main load-bearing material of the support seat. It wraps the gravel layer and fixes the connecting pins to form a stable structural system.

[0030] The prefabricated cover plate 7 is another important component of the breathable paving structure, which is directly laid on the support base 8 to form a continuous paving surface. Figure 3 As shown, the prefabricated cover plate 7 is composed of the following main elements:

[0031] Steel mesh 9:

[0032] Materials: 6mm diameter steel bars, woven into a mesh at 100mm intervals.

[0033] Function: The steel mesh 9 enhances the overall rigidity and bearing capacity of the prefabricated cover plate 7, preventing it from cracking or being damaged due to excessive stress.

[0034] Breathable holes 11:

[0035] Shape and size: Round hole, 50 mm diameter.

[0036] Function: The provision of the ventilation holes 11 is conducive to ventilation and drainage, while reducing the weight of the prefabricated cover plate 7, making it easier to carry and install.

[0037] Concrete layer 10:

[0038] Material: Concrete with strength grade C30.

[0039] Function: Concrete fills the space formed by the steel mesh to form a strong and durable prefabricated cover.

[0040] Preferably, when the prefabricated cover plate 7 is set in the pedestrian area, the thickness is 80 mm, and the steel mesh 9 is set at a position 25 mm away from the bottom surface of the concrete layer 10; when the prefabricated cover plate 7 is set in the vehicle area, the thickness is 150 mm, and the steel mesh 9 is set at a position 25 mm away from the bottom surface of the concrete layer 10.

[0041] Furthermore, a positioning hole corresponding to the position of the connecting pin 1 is provided on the prefabricated cover plate 7, and the connecting pin 1 is positioned through the positioning hole. The positioning hole is self-filled with a self-compacting grouting material 14, and the self-compacting grouting material 14 is of C40 grade and is used to fill and reinforce gaps and cracks in the structure to improve the stability and durability of the overall structure.

[0042] The first foundation column 3 includes a lower cylinder and a T-stage column at the head. The first foundation column 3 is a reinforced concrete column with a strength grade of C30. C12 steel bars are used to penetrate the cylinder and the T-stage column in the first foundation column 3. C12 steel bars and C30 reinforced concrete columns with a diameter of 100 mm are used as cylinders and T-stage columns. These high-strength materials can be used to build stronger support columns or structural columns to meet the needs of specific application scenarios.

[0043] The soil base layer 4 is the original soil that has been properly processed to achieve the required density and bearing capacity. It serves as the base layer of the pavement structure and provides stable support for the entire structure. The hollow breathable layer 6 is composed of a plurality of breathable bricks spliced ​​together, and the breathable bricks are provided with through holes. The hollow breathable layer 6 is not only beautiful, but more importantly, it has good air permeability and drainage performance, which is conducive to the growth of trees and the maintenance of the ground. The hollow breathable layer 6 reserves an appropriate hollow area in the pavement structure to enhance the air permeability. The proportion of its reserved area should not exceed 20% of the total pavement area (that is, for a pavement with a total area of ​​T square meters, the reserved area of ​​the hollow breathable layer should not exceed 0.2*T square meters), and in any case, the maximum area of ​​a single reserved area should not exceed 200 square meters to avoid excessive local size affecting the stability and functionality of the overall structure.

[0044] Preferably, a dry hard ash bonding layer 12 and a surface layer 13 are sequentially laid on the prefabricated cover plate 7. The dry hard ash bonding layer 12 is a cement mortar layer, which is mainly made of cement, sand and water mixed in a certain proportion, and is laid on the prefabricated cover plate 7. It has high strength and adhesion, can effectively fix the surface layer material, and enhance the overall stability and durability of the paving structure. The surface layer 13 is a wear-resistant and anti-skid material layer, which usually uses materials with good wear resistance and excellent anti-skid performance, such as wear-resistant floor tiles, anti-skid coatings, etc., to provide a comfortable and safe walking surface and protect the underlying structural layer from wear and damage.

[0045] The geotextile 5 is a 200g geotextile layer laid on the soil base 4 to isolate the soil and the paving structure and prevent soil particles from penetrating into the paving layer.

[0046] For precious tree species such as ancient trees and famous trees, the breathable paving structure of the present invention can provide a better growth environment, reduce the risk of death of ancient trees due to soil environment deterioration, and help protect the survival and reproduction of ancient trees and famous trees.

[0047] Taking the renovation of the ancient tree platform in Badachu Park in Beijing as an example, the forestry breathable paving structure of the present invention is used to renovate the ancient tree platform. By laying the breathable paving structure, water-permeable and air-permeable holes or gaps are reserved, and a certain space is left between the paving layer and the soil surface layer to keep the soil permeable and air-permeable. After comparative experiments and tests, as shown in the following table, it is found that the physical and chemical properties of the soil using the paving structure of the present invention are better than those of the soil under the traditional closed paving, which proves the positive effect of the present invention.

[0048]

[0049]

[0050] The breathable pavement structure of the present invention makes the air exchange between the ground surface and the soil base smoother by designing a reasonable breathable layer, increases the oxygen content in the soil, helps the respiration of the tree roots, and promotes the healthy growth of the trees. It also has the following characteristics:

[0051] Improve soil permeability: The breathable paving structure makes the air exchange between the surface and the soil base smoother through the design of a reasonable breathable layer. It increases the oxygen content in the soil, helps the respiration of tree roots, and promotes the healthy growth of trees.

[0052] Enhance soil permeability: The pavement structure uses permeable materials to allow rainwater to penetrate the soil smoothly and avoid surface water accumulation. This ensures that the roots of trees can obtain sufficient water and avoids root rot caused by water accumulation.

[0053] Optimize soil environment: Breathable paving structure helps maintain the stability of soil structure and prevent soil compaction and salinization. It promotes the growth and activity of soil microorganisms, improves soil fertility and organic matter content, and provides a better growth environment for trees.

[0054] Promote the development of tree roots: Good air permeability and water permeability help the expansion and penetration of tree roots. The roots can better absorb nutrients and water from the soil, supporting the healthy growth of trees.

[0055] Improve tree resistance: Breathable paving structures can reduce the negative impact of environmental stress (such as high temperature, drought, etc.) on trees. It enhances the resistance of trees to diseases and pests, and helps trees stay healthy in harsh environments.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A breathable paving structure for the root zone of trees, characterized by: The invention comprises a geotextile (5), a hollow air-permeable layer (6), and a prefabricated cover plate (7) which are sequentially arranged on an original soil layer (4) from bottom to top, wherein the prefabricated cover plate (7) is supported and fixed by a plurality of support seats (8) arranged at intervals, wherein the support seats (8) are arranged at the splicing position of the prefabricated cover plate (7), wherein the support seats (8) comprise a first foundation column (3) vertically arranged in the original soil layer (4), a second foundation layer (2) arranged at the lower outer layer of the first foundation column (3), and a connecting pin (1) vertically arranged at the top for connecting and fixing the prefabricated cover plate (7), wherein the first foundation column (3) comprises a lower cylindrical column and a T-stage column at the head, and the first foundation column (3) is a C30 strong The invention relates to a reinforced concrete column with a certain degree of steel structure, wherein the first foundation column (3) is provided with C12 steel bars penetrating the cylinder and the T-stage column, the second foundation layer (2) is a crushed stone layer with a diameter of 20 to 30 mm, the prefabricated cover plate (7) comprises a steel mesh (9), a concrete layer (10) cast on the steel mesh (9), a vent hole (11) penetrating the concrete layer (10), and a positioning hole corresponding to the position of the connecting pin (1), the connecting pin (1) is positioned through the positioning hole, the positioning hole is filled with a self-compacting grouting material (14), and the hollow vent layer (6) is paved with a plurality of mutually spliced ​​vent bricks, and the vent bricks are provided with through holes.

2. The breathable paving structure according to claim 1, characterized in that: The connecting pin (1) is made of C20 steel bars.

3. The breathable paving structure according to claim 1, characterized in that: The steel mesh (9) is made of steel bars with a diameter of 6 mm woven at a pitch of 100 mm.

4. The breathable paving structure according to claim 1, characterized in that: A dry hard ash bonding layer (12) and a surface layer (13) are sequentially laid on the prefabricated cover plate (7); the dry hard ash bonding layer (12) is a cement mortar layer, and the surface layer (13) is a wear-resistant and anti-skid material.

5. The breathable paving structure according to claim 1, characterized in that: The self-compacting grouting material (14) is of C40 grade.

6. The breathable paving structure according to claim 1, characterized in that: When the prefabricated cover plate (7) is arranged in a pedestrian area, the thickness is 80 mm, and the steel mesh (9) is arranged at a position 25 mm from the bottom surface of the concrete layer (10); when the prefabricated cover plate (7) is arranged in a vehicle area, the thickness is 150 mm, and the steel mesh (9) is arranged at a position 25 mm from the bottom surface of the concrete layer (10).

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