CN114606824A

CN114606824A - Permeable pavement and paving method

Info

Publication number: CN114606824A
Application number: CN202210102456.3A
Authority: CN
Inventors: 王嘉勇; 唐明月; 曾祥富; 唐坤; 罗洪友
Original assignee: Sichuan Yaoshun Construction Group Co ltd
Current assignee: Sichuan Yaoshun Construction Group Co ltd
Priority date: 2022-01-27
Filing date: 2022-01-27
Publication date: 2022-06-10

Abstract

The invention relates to a permeable pavement and a paving method, belonging to the field of building materials. The invention provides a permeable pavement which not only meets the compressive strength of driving, but also has the functions of greening vegetation, conserving water sources, absorbing water and storing water, and can be widely applied to the construction of road surfaces of river bank slope protection engineering, sponge roads, parking lots and the like. The invention provides a permeable pavement, which comprises a grid layer, a soil filling layer, a small granular layer, a large granular layer and a bottom soil layer from top to bottom, wherein the grid layer is formed by splicing polygonal frames made of concrete, the frames are filled with soil to form the soil filling layer, and the polygonal frames are laid on the small granular layer.

Description

Permeable pavement and paving method

Technical Field

The invention relates to a permeable pavement and a paving method, belonging to the field of building materials.

Background

Along with the continuous development of urban construction, urban roads are all around, the vegetation area is less and less, and the road surface is mostly impervious road surface, causes multiple problems, and wherein it is serious that urban waterlogging phenomenon is the most outstanding. Meanwhile, rainwater cannot permeate underground, so that water loss is caused; concrete is the most common building material, and is mainly applied to the construction of river bank protection projects, roads, parking lots and the like. The concrete pavement can not grow plants and can not effectively exchange heat with air, thus causing serious urban heat island effect. The soil pavement can realize greening vegetation, conserving water sources, absorbing water and storing water, but lacks necessary compressive strength, is not suitable for vehicles and even pedestrians to pass, and particularly forms muddy and messy water after absorbing water. The ground tile pavement or the grid ground tile pavement is easy to loosen, the lower foundation is soft, and the pavement is easy to deform and damage.

How to combine the advantages of concrete and soil, avoid the defect, construct can not only pass the vehicle, but also afforest vegetation, keep in good health water source, absorb water and impound, be the problem that urban construction people need think.

Disclosure of Invention

In order to solve the problems, the invention provides a permeable pavement which not only has the compressive strength of driving, but also has the functions of greening vegetation, conserving water sources, absorbing water and storing water, and can be widely applied to the construction of road surfaces of river bank slope protection engineering, sponge roads, parking lots and the like.

The invention provides a permeable pavement, which comprises a grid layer, a filling soil layer, a small granular layer, a large granular layer and a bottom soil layer from top to bottom, wherein the grid layer is formed by splicing polygonal frame monomers made of concrete, the frame is filled with soil to form the filling soil layer, and the polygonal frame is laid on the small granular layer, wherein the grain diameter of the small granules is 0.5-5mm, and the grain diameter of the large granules is 5-50 mm.

The thickness of the grid layer, namely the thickness of the polygonal frame, is 50-200mm, the thickness of the small particle layer is 20-200mm, and the thickness of the large particle layer is 100-300 mm.

The filling soil layer is natural soil, and the bottom soil layer is natural soil or soil which is suitable for corresponding vegetation growth and is added with plant growth nutrients.

The polygonal frame is wide at the top and narrow at the bottom, and the side section of the polygonal frame is wedge-shaped or trapezoid.

The small particle layer is stone particles, gravel, silica fume, fly ash or other water-resistant particles. The large granular layer is stone grains, ceramic bricks, concrete blocks or other water-resistant particles.

The paving method of the permeable pavement comprises the steps of digging a sunken soil pit on soil of a target land block, forming a bottom soil layer by the soil at the lowest part, paving a large granular layer, a small granular layer, a grid layer and a filled soil layer in the soil pit layer by layer, flattening, compacting, sprinkling water and supplementing leaked soil after each layer is filled, spreading plant seeds on the surface of the filled soil layer after 3-7d maintenance, then covering with soil supplement, and continuing to maintain for 14-21 d.

The invention has the beneficial effects that: in the net layer that concrete polygon frame laid, the polygon frame provided sufficient compressive strength, satisfied the vehicle current, fill soil in the net that frame and concatenation formed, have good water conservation water source, the retaining performance that absorbs water, can plant the vegetation. The clearance of little grained layer is little, avoids upper soil granule to run off, has better hydrophobicity than the soil horizon simultaneously, avoids the road surface waterlogging. The large granule layer forms the hardy base on road surface for the road surface has better compressive capacity, and the upper strata tiny particle loss can be avoided in suitable clearance simultaneously, has compromise its water permeability simultaneously, in time permeates bottom soil horizon with unnecessary moisture, makes it have the water absorption of "sponge".

The polygonal frame is wide at the top and narrow at the bottom, and the side section of the polygonal frame is wedge-shaped or trapezoid. Can make the frame lower limb inlay and insert little grained layer for space around the little grained layer fully fills the frame lower limb, polygonal frame is more firm, and this structure also makes polygonal frame imbed the soil horizon better on the same reason, and the frame edge is filled, is filled by soil or tiny particle, fills to be very stable. The structure with wide upper part and narrow lower part can bring convenience when being laid, and the splicing is more compact by inserting type laying.

After each layer is filled, flattening, compacting, watering, supplementing leakage soil, maintaining for 3-7d, and filling soil particles into gaps of small granular layers to form a stable layered structure. Spreading plant seeds on the surface of the filled soil layer, covering with soil, and maintaining for 14-21 days to grow environment friendly road vegetation.

Drawings

FIG. 1 is a schematic cross-sectional view of a permeable pavement.

Fig. 2 is a schematic diagram of square grid laying.

Fig. 3 is a schematic diagram of a hexagonal grid layout.

Figure 4 a square grid cell.

Figure 5 is a cross-sectional view of a single square grid.

Wherein 1, net layer, 2, fill soil layer, 3, little granular layer, 4, large granule layer, 5, bottom soil layer, 11, square grid lay the pattern, 12, hexagonal grid lay the pattern, 111, polygon frame.

Detailed Description

The following describes embodiments of the present invention in detail with reference to the accompanying drawings.

Example 1

The permeable pavement provided by the invention comprises a grid layer 1, a filling soil layer 2, a small particle layer 3, a large particle layer 4 and a bottom soil layer 5 from top to bottom, wherein the grid layer 1 is formed by splicing polygonal frames 111 made of concrete, the filling soil in the frames forms the filling soil layer 2, and the polygonal frames 111 are laid on the small particle layer, wherein the particle size of the small particles is 0.5-5mm, and the particle size of the large particles is 5-50 mm.

The thickness of the grid layer 1, namely the thickness of the polygonal frame, is 50mm, the thickness of the small particle layer 3 is 200mm, and the thickness of the large particle layer 4 is 100 mm.

The filling soil layer 2 is natural soil, and the bottom soil layer 5 is natural soil.

The small granular layer 3 is stone grains, and the large granular layer 4 is a concrete block.

The polygonal frame 111 has a trapezoidal cross section with a wide top and a narrow bottom.

Example 2

Like example 1, the thickness of the mesh layer 1, i.e., the thickness of the polygonal frame, was 200mm, the thickness of the small particle layer 3 was 20mm, and the thickness of the large particle layer 4 was 300 mm.

The filling soil layer 2 is added with plant growth nutrients suitable for the growth of corresponding vegetation.

The small particle layer 3 is gravel, and the large particle layer 4 is ceramic bricks.

The polygonal frame 111 has a wedge-shaped cross section with a wide top and a narrow bottom.

Example 3

Like example 1, the thickness of the mesh layer 1, i.e., the thickness of the polygonal frame, was 100mm, the thickness of the small particle layer 3 was 80mm, and the thickness of the large particle layer 4 was 200 mm.

The small particle layer 3 is fly ash, and the large particle layer 4 is stone particles.

The polygonal frame 111 has an inverted triangular shape with a wide top and a narrow bottom in side section.

Example 4

The paving method of the permeable pavement comprises the steps of digging a sunken soil pit on soil of a target land block, forming a bottom soil layer 5 by soil at the lowest part, paving a large granular layer 4, a small granular layer 3, a grid layer 1 and a filling soil layer 2 in the soil pit layer by layer, flattening, compacting, sprinkling water and supplementing leakage soil after each filling layer, after maintaining for 3-7d, paving plant seeds on the surface of the filling soil layer, then supplementing and covering with soil, and continuing to maintain for 14-21 d.

Claims

1. The utility model provides a permeable pavement, characterized by, the road surface is from top to bottom including net layer (1), fill soil layer (2), granular course (3), big granular course (4), bottom soil layer (5), net layer (1) is formed by the concatenation of polygon frame (111) monomer that the concrete was made, and the frame intussuseption is filled soil and is formed and is filled soil layer (2), and polygon frame (111) are laid on granular course (3), and wherein, the granular diameter is 0.5-5mm, and the large granule particle diameter is 5-50 mm.

2. The pavement according to claim 1, wherein the thickness of the grid layer (1), i.e. the thickness of the polygonal frame, is 50-200mm, the thickness of the small particle layer (3) is 20-200mm, and the thickness of the large particle layer (4) is 100-300 mm.

3. The pavement according to claim 1, characterized in that the filling soil layer (2) is natural soil and the bottom soil layer (5) is natural soil.

4. The pavement according to claim 1, characterized in that the soil-fill layer (2) is soil supplemented with plant-growth nutrients suitable for the growth of the corresponding vegetation.

5. The pavement according to claim 1, wherein the polygonal frame (111) is wide at the top and narrow at the bottom.

6. -pavement according to claim 1 or 5, characterized in that the polygonal frame (111) is wedge-shaped in side section.

7. -pavement according to claim 1 or 5, characterized in that the polygonal frame (111) is trapezoidal in side section.

8. The pavement according to claim 1, wherein the small particle layer (3) is one or more of stone particles, gravel, silica fume and fly ash.

9. The pavement according to claim 1, characterized in that the large granular layer (4) is one or more of stone grains, ceramic bricks and concrete blocks.

10. The method for laying a permeable pavement according to claim 1, wherein a sunken soil pit is dug in the soil of the target land, the soil at the lowest part forms a bottom soil layer (5), a large granular layer (4), a small granular layer (3), a grid layer (1) and a filling soil layer (2) are laid in the soil pit layer by layer, the soil is flattened, compacted, sprinkled and supplemented with leakage soil after each filling, plant seeds are sprinkled on the surface of the filling soil layer (2) after 3-7d of maintenance, the soil is supplemented and covered with the plant seeds, and the maintenance is continued for 14-21 d.