A paving structure for a road surface

Abstract

The utility model discloses a paving structure for a road surface, comprising a soil compaction layer, a crushed stone cushion layer, a road surface base layer, a connecting layer and a road surface paving layer stacked and connected in sequence from bottom to top, wherein the connecting layer comprises a plurality of plates spliced ​​in sequence, wherein the plates are compression-resistant pads. The paving structure for a road surface forms a connecting layer connecting the road surface base layer and the road surface paving layer by splicing the plates, and the plates are compression-resistant pads. On the basis of ensuring the load capacity of the connecting layer, there is no need to mix mortar on site, thus reducing construction costs, avoiding adverse effects on construction personnel and the on-site environment, ensuring the flatness of the road surface, and facilitating subsequent maintenance and treatment, and furthermore, it is conducive to improving construction efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of road paving, in particular to a paving structure for a road surface. Background Art

[0002] The roadbed is the foundation of the road surface and is a geotechnical structure formed by excavation or filling. The main function of the roadbed is to provide the necessary conditions for road paving and driving, and to bear the load of locomotives, vehicles or road surfaces and traffic, while transmitting and spreading the load deep into the foundation. In civil engineering, the roadbed plays an important role in terms of construction quantity, area occupied and investment.

[0003] In the prior art, the paving structure used for the road mainly includes a soil compaction layer, a crushed stone cushion layer, a road base layer, a mortar bonding layer and a road paving layer which are stacked in sequence from bottom to top. During the construction process, the mortar used in the mortar bonding layer is usually temporarily mixed at the construction site. During production, it not only requires water and electricity, consumes water and electricity, and increases production costs (such costs mainly include the paving cost of the mortar and the transportation cost of the materials), but also generates dust pollution, which has an adverse effect on the air environment of the construction site and the respiratory health of the surrounding construction workers. In addition, since the mortar is formed by mixing a certain proportion of sand and cement binder (including cement, lime paste, clay and other materials) with water, it is difficult to accurately ensure that the sand, cement binder and water are in a fixed proportion during the mortar mixing process, and there are differences in the uniformity of the materials during mixing, which leads to the uniformity of the mixed mortar being different. The density is difficult to maintain consistent, and hollowing is common, which makes the load capacity of the formed mortar bonding layer different. After long-term use, the road surface with relatively poor density is prone to depression, which leads to loosening of the paving surface material and unevenness of the road surface. In addition, since the mortar needs to be mixed on site and the mixed materials need to be mixed, the construction efficiency is extremely low. Not only that, the use of mortar as a bonding layer is a one-time paving method. After the mortar is fixed and formed, it is fixedly connected to the pavement pavement layer and the pavement base layer, which increases the difficulty of future maintenance and replacement of the road surface. Moreover, for pavements with permeable requirements, the mortar bonding layer is required to have good permeability. However, the permeability of the mortar bonding layer is usually at the expense of its own load strength. That is, in order to ensure its own structural strength and load capacity, the permeability of the mortar bonding layer usually does not meet the standard requirements.

[0004] Therefore, it is necessary to improve the paving structure used for road surfaces in the prior art. Utility Model Content

[0005] The purpose of the utility model is to overcome the defects existing in the prior art and provide a paving structure for the road surface which reduces construction costs, facilitates construction to improve construction efficiency, avoids harm to the surrounding environment and construction personnel, ensures uniform load capacity at various locations on the road surface to achieve road surface flatness, facilitates future maintenance and has good water permeability.

[0006] In order to solve the above technical problems, the utility model discloses a paving structure for a road surface, comprising a compacted soil layer, a crushed stone cushion layer, a road surface base layer, a connecting layer and a road surface paving layer which are stacked and connected in sequence from bottom to top, wherein the connecting layer comprises a plurality of plates which are spliced ​​in sequence, and the plates are compression-resistant pads.

[0007] Preferably, in order to ensure the structural strength of the plate to ensure its load-bearing capacity, and at the same time make the plate have a certain elasticity to avoid the plate from being too hard and breaking, and also to facilitate the transportation of the plate and reduce costs, the compression pad is an elastic compression pad.

[0008] Preferably, in order to further ensure the structural strength and compression resistance of the plate, the elastic compression-resistant pad is an EPP plate or an EVA plate.

[0009] Preferably, in order to further ensure the bending strength of the connecting layer and avoid an increase in production costs due to an excessive thickness of the connecting layer, the thickness of the connecting layer is 10-50 mm.

[0010] Preferably, in order to realize the water permeability function of the pavement structure for the road surface and avoid water accumulation on the road surface, a water permeable through hole is provided on the connecting layer, and two openings of the water permeable through hole are respectively provided on the top surface and the bottom surface of the connecting layer.

[0011] Preferably, in order to enhance the water permeability of the road pavement structure, the water-permeable through hole includes a first water-permeable hole and a second water-permeable hole, the first water-permeable hole is arranged on the plate, and the second water-permeable hole is formed by enclosing at least two adjacent plates.

[0012] Preferably, in order to further enhance the water permeability, the water permeable through holes are densely distributed on the connecting layer.

[0013] Preferably, in order to reduce residual water accumulation on the top surface of the connecting layer and enhance the water permeability of the paving structure, a guide groove is provided on the top surface of the connecting layer, and the guide groove is connected between the top openings of two adjacent water-permeable through holes.

[0014] Preferably, in order to facilitate the splicing connection between adjacent plates, at least two adjacent plates are provided with locking protrusions and locking recesses for interlocking the plates.

[0015] Preferably, in order to ensure the flatness of the top surface of the connecting layer so as to form a level road surface after laying bricks on the connecting layer to facilitate the passage of vehicles and pedestrians, one side of the road surface base and the connecting layer is a connecting surface that has been leveled.

[0016] Preferably, in order to further ensure the water permeability of the pavement paving structure, the pavement base layer is a permeable pavement base layer.

[0017] To sum up, compared with the prior art, the pavement paving structure of the utility model forms a connecting layer connecting the pavement base layer and the pavement paving layer by splicing plates. The plates are selected from compression pads. On the basis of ensuring the load capacity of the connecting layer, there is no need to mix mortar on site, which reduces construction costs and avoids adverse effects on construction personnel and the site environment. It also ensures the flatness of the road surface and facilitates subsequent maintenance and processing. In addition, it is beneficial to improve construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a first embodiment of a pavement structure for a road surface according to the utility model;

[0019] Figure 2 It is a structural schematic diagram of the connecting layer of the second embodiment of the pavement structure for road surface of the utility model;

[0020] Figure 3 yes Figure 2 A top view of

[0021] Figure 4 It is a structural schematic diagram of the connecting layer of the third embodiment of the pavement structure for road surface of the utility model;

[0022] Figure 5 yes Figure 4 A top view of

[0023] Figure 6 This is a schematic structural diagram of a plate material of a third embodiment of a pavement structure for a road surface according to the utility model;

[0024] Figure 7 It is a structural schematic diagram of a connecting layer of a fourth embodiment of a pavement structure for a road surface of the utility model;

[0025] Figure 8 yes Figure 7 A top view of

[0026] Fig. 9 It is a structural schematic diagram of the connecting layer of the fifth embodiment of the pavement structure for road surface of the utility model;

[0027] Fig.10 yes Fig. 9 Schematic diagram of the structure of the middle plate;

[0028] Fig.11 yes Fig.10 Side view of

[0029] In the figure: 100, soil compaction layer; 200, crushed stone cushion layer; 300, road base layer; 400, connecting layer; 500, road pavement layer; 501, bricks; 600, plate; 700, water-permeable through hole; 701, first water-permeable hole; 702, second water-permeable hole; 800, locking protrusion; 900, locking depression; 110, diversion groove. DETAILED DESCRIPTION

[0030] The following is a further description of the specific implementation of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0031] First embodiment

[0032] like Figure 1 As shown, the paving structure for a road surface according to the first embodiment of the utility model includes a soil compaction layer 100, a crushed stone cushion layer 200, a road surface base layer 300, a connecting layer 400 and a road surface paving layer 500 which are sequentially stacked and connected from bottom to top, and the connecting layer 400 includes a plurality of plates 600 which are spliced ​​in sequence, and the plates 600 are compression-resistant pads.

[0033] Among them, the bare soil compaction layer 100 is the foundation of the pavement structure used for the road surface, and is usually formed by the bare soil tamping construction method. The bare soil tamping means to tamp and fill the bare soil. The bare soil is a natural sedimentary soil layer with a fine and uniform density and a certain viscosity without being mixed with other impurities. The tamping is to tamp and fill the backfill soil layer by layer. There are usually many methods such as manual, mechanical, and vehicle. By tamping and filling the bare soil, a bare soil compaction layer 100 is formed to prevent the road base surface from settling.

[0034] The main raw materials of the gravel cushion layer 200 are various graded gravels. As an example, the gravel cushion layer 200 can be obtained by compacting coarse sand alone, or by using medium-coarse sand, pebbles, etc. with good grading and hard texture, and after multiple layers of compaction, a suitable grading scheme is selected according to different roadbeds and local geographical conditions. This embodiment is not specifically limited here. There are also many ways to construct the gravel cushion layer 200, such as using a grader and a bulldozer to cooperate in construction, a loader and a sprinkler truck to cooperate in mixing, or using a paver to construct and a mixer to mix, so that the gravel cushion layer 200 is stacked and laid on the bare soil compaction layer 100. The gravel cushion layer 200 is used to treat soft foundations, diffuse stress, and drain water. It can also accelerate the consolidation and settlement of the lower soil layer and accelerate the drainage and consolidation of the foundation.

[0035] The road base 300 is the middle layer between the foundation and the soil foundation below, which can isolate the erosion of the foundation by groundwater, level and transition, facilitate the construction direction, support the foundation template, ensure the effective position of the foundation bottom plate reinforcement, isolate the bottom reinforcement and the soil from pollution, and adjust the thickness by leveling to compensate for the error of earth excavation, so that the bottom plate is stressed in one plane, avoiding the waste of high-grade concrete of the foundation. The road base 300 is mainly formed by a combination of a base frame and concrete. The base frame can be a permeable frame disclosed in the Chinese invention patent application document with publication number CN108425298A, which will not be described here.

[0036] The road paving layer 500 is formed by connecting a plurality of bricks 501 laid on the connection layer 400. The shapes and types of the bricks 501 can be various and are not limited here.

[0037] The connecting layer 400 is stacked between the pavement pavement layer 500 and the pavement base layer 300. Compared with the traditional connecting layer 400 formed by mortar, in this embodiment, the connecting layer 400 is spliced ​​by multiple plates 600, and the plate 600 uses a compression pad to ensure the load strength of the plate 600, avoid serious deformation and damage of the plate 600 after long-term trampling, and compared with the mortar mixed on site, it is also convenient to transport, thereby reducing the transportation cost, and is convenient for construction and paving, which is conducive to improving construction efficiency; not only that, after the connecting layer 400 uses the plate 600, there is no need to mix the mortar on site, so there is no need to consume water and electricity, which further reduces the construction cost and avoids the dust caused by the mixing of the mortar, which is harmful to the construction workers. In addition, compared with the mortar connecting layer, in this embodiment, the thickness and density of each plate 600 are kept consistent. Therefore, after the pavement base 300 is leveled, a connecting layer 400 formed by laying multiple plates 600 on the pavement base 300 can ensure the overall flatness of the connecting layer 400 and avoid local depression of the top surface of the pavement structure used for the road, which affects the travel of vehicles and people. When one of the plates 600 is damaged or its service life has reached the end of its service life, after removing the brick 501 directly above the plate 600, it is convenient to replace the plate 600. After the replacement is completed, the brick 501 is laid at that position, and the maintenance and paving operation is convenient and quick.

[0038] In order to ensure the structural strength and compression resistance of plate 600, extend the service life of plate 600, and thereby reduce the frequency of road maintenance replacement, plate 600, that is, the compression pad, preferably adopts an elastic compression pad, so that during use, plate 600 can withstand pressure through its own elastic deformation, and avoid the plate 600 itself being too rigid and hard to cause easy breakage. In this way, on the basis of meeting the compression resistance and structural strength of plate 600, the service life is extended and transportation is also convenient.

[0039] A further improvement is that the elastic compression-resistant pad is an EPP board 600.

[0040] EPP sheet 600, whose main production raw material is polypropylene foam resin, is a kind of foam plastic. EPP sheet 600 has excellent properties such as high strength, high resilience, impact resistance, corrosion resistance and not easy to break; and the EPP sheet 600 has a small heat shrinkage rate and stable size, which can ensure the good physical properties of the connecting layer 400; not only that, the EPP sheet 600 has a small density, which is conducive to reducing its own weight, thereby facilitating transportation, reducing transportation costs, and facilitating laying; in addition, EPP sheet 600 also has good buffering performance, its closed-cell foam structure gives it low thermal conductivity, and EPP sheet 600 is non-toxic, degradable, recyclable and environmentally friendly, thereby ensuring the health and safety of construction workers. In this embodiment, the specific physical parameters of the EPP sheet 600 are as follows: the forming density is 82g / L, the compression strength is 530kPa, the compression permanent deformation rate is 8.5%, the bending strength is 1090kPa, and the water absorption rate is 0.02g / cm 3 .

[0041] Of course, as a replacement for similar effects, the elastic pressure-resistant pad of this embodiment can also use EVA sheet 600. Compared with other types of pads, EVA sheet 600 is famous for its high elasticity and excellent buffering performance, and can withstand greater pressure and impact force, so it can ensure the structural strength and compression resistance of the connecting layer 400. Specifically, EVA sheet 600 is a material made of ethylene-vinyl acetate copolymer, which has the advantages of good softness, shockproof, anti-skid, and strong pressure resistance. In the actual production process, EVA sheet 600 can also be processed into different colors, hardness and specifications according to different usage needs, so it has excellent plasticity and appearance. At the same time, it also has safety properties such as flame retardant, shock absorption, and buffering. In addition, EVA sheet 600 and EPP sheet 600 are both non-toxic, odorless, pollution-free, and pollution-free new environmentally friendly plastic foam materials. They are degradable, recyclable, and environmentally friendly, thereby ensuring the health of construction workers.

[0042] In order to ensure the load strength of the connection layer 400 and avoid damage and rupture of the plate 600, the thickness of the connection layer 400 is preferably 10-50 mm.

[0043] A further improvement is that one side of the pavement base 300 and the connecting layer 400 is a connecting surface that has been leveled. That is, during construction, the top surface of the pavement base 300 is leveled so that its surface is in the same plane and its flatness is ensured, so that after the plate 600 is laid on the pavement base 300 to form the connecting layer 400, bricks 501 are laid on the surface of the connecting layer 400 to form a pavement paving layer 500 with a flat top surface.

[0044] Second embodiment

[0045] like Figure 2 and Figure 3 The paving structure for a road surface of the second embodiment is based on the first embodiment, with the difference that a water-permeable through hole 700 is provided on the connecting layer 400, and two openings of the water-permeable through hole 700 are respectively provided on the top surface and the bottom surface of the connecting layer 400.

[0046] Specifically, the water-permeable through holes 700 include first water-permeable holes 701, which are arranged in a rectangular array on the plate 600, and two adjacent first water-permeable holes 701 are arranged closely to each other, so that the water-permeable through holes 700 are densely distributed on the connecting layer 400; the water-permeable pavement base layer 300 is selected in conjunction with the pavement base layer 300, which further enhances the water-permeability of the pavement structure used for the road surface, and avoids water accumulation on the road surface in rainy weather. Of course, in this embodiment, the first water-permeable holes 701 can also be arranged on the plate 600 in other distribution modes to achieve the effect of enhancing the water-permeability of the connecting layer 400 and preventing water accumulation on the road surface.

[0047] In order to facilitate the laying of the connecting layer 400, so that adjacent plates 600 are close to each other, and to ensure the structural strength and water permeability of the connecting layer 400, in this embodiment, the board surface shape of the EPP board 600 is rectangular, so that the EPP board 600 is close to each other when laid on the pavement base 300. Of course, the EPP board 600 can also be other shapes, for example, the board surface shape of the EPP board 600 adopts other regular shapes such as regular hexagons, regular triangles, etc.

[0048] Third embodiment

[0049] like Figure 4-Figure 6 As shown, the paving structure for a road surface of the third embodiment is based on the second embodiment, but differs in that two adjacent plates 600 are provided with locking protrusions 800 and locking recesses 900 for interlocking the two plates.

[0050] Specifically, locking protrusions 800 and locking recesses 900 are provided on the four side walls of the circumferential outer edge of the plate 600. The locking protrusions 800 and the locking recesses 900 are adapted to each other. The locking recesses 900 are notch-shaped, and the cross section of the inner wall thereof is an arc shape. After adopting the above structure, when the plate 600 is laid on the road base 300, there are two locking protrusions 800 and two locking recesses 900 between the sides of two adjacent plates 600. The locking protrusions 800 of one plate 600 are inserted into the locking recesses 900 of the other plate 600 to realize the interlocking connection of the above two plates 600, so that each plate 600 is locked and connected with each other to form a connecting layer 400, thereby preventing the position of the plate 600 from shifting and ensuring the stability of the position of the plate 600.

[0051] It should be noted that the distribution of the locking protrusions 800 and the locking recesses 900 on the plate 600 in this embodiment is not limited to the above-mentioned method. For example, for two adjacent plates 600, only a locking protrusion 800 is provided on one of the plates 600, and only a locking recess 900 is provided on the other plate 600. The locking protrusions 800 and the locking recesses 900 correspond to each other and match each other. In this case, the two adjacent plates 600 can also be interlocked and connected through the locking protrusions 800 and the locking recesses 900.

[0052] Fourth embodiment

[0053] like Figure 7 and Figure 8 As shown, the pavement structure for a road surface of the fourth embodiment is based on the third embodiment, and the difference is that the water-permeable through hole 700 also includes a second water-permeable hole 702 , and the second water-permeable hole 702 is formed by enclosing adjacent plates 600 .

[0054] Specifically, water-permeable recesses are provided on the four side walls of the plate 600, and the water-permeable recesses are evenly spaced along the circumference of the plate 600, so that after a plurality of plates 600 are spliced ​​to form a connecting layer 400, in any two plates 600 that are bonded together, the side walls of the two plates bonded together form second water-permeable holes 702 evenly spaced along the length direction of the side walls, and at the same time, four plates 600 that are distributed in a rectangular array and bonded together in sequence and adjacent to each other form a second water-permeable hole 702. In this way, the first water-permeable holes 701 of the plate 600 itself and the second water-permeable holes 702 formed after the adjacent plates 600 are bonded together are combined to form a plurality of water-permeable through holes 700 of the connecting layer 400, so that the water-permeable through holes 700 are further densely distributed on the connecting layer 400, thereby enhancing the water-permeable performance of the paving structure for the road surface.

[0055] Fifth embodiment

[0056] like Figure 9-11As shown, the pavement structure for a road surface of the fifth embodiment is based on the fourth embodiment, and a guide groove 110 is provided on the top surface of the connecting layer 400 , and the guide groove 110 is connected between the top openings of two adjacent water-permeable through holes 700 .

[0057] Specifically, the guide groove 110 is arranged on the top surface of the plate 600, and the guide groove 110 and the water-permeable through holes 700 are evenly and densely distributed on the plate 600, thus ensuring that the structural strength of the plate 600 is evenly distributed and avoiding the part of the structure being too low in strength and easy to be damaged.

[0058] The two ends of the guide groove 110 are connected to two adjacent water-permeable holes 700, so that after rainwater falls on the plate 600, the water flow can be guided to the water-permeable holes 700 through the guide groove 110, which facilitates the water flow to be discharged through the water-permeable holes 700. Therefore, most of the accumulated water can be avoided on the plate 600, thereby further enhancing the water permeability of the connecting layer 400.

[0059] In addition, in the present embodiment, two locking protrusions 800 and locking recesses 900 are respectively provided on the four side walls of the circumferential outer edge of the plate 600 in a one-to-one correspondence. Specifically, any one locking protrusion 800 and any one locking recess 900 form a pair, which are distributed on two opposite side walls of the plate 600. With this design, when laying the plate 600, it is only necessary to insert the locking protrusion 800 of one of the two adjacent plates 600 into the locking recess 900 of the other plate 600, so as to realize the interlocking connection of the two adjacent plates 600, prevent the plates 600 from offsetting and sliding against each other, and ensure the stability of the connecting layer 400.

[0060] To be more specific, the locking protrusion 800 is flush with the top surface of the plate 600 and protrudes toward the plane where the bottom surface of the plate 600 is located. The locking recess 900 is flush with the bottom surface of the plate 600 and its recess faces the plane where the top surface of the plate 600 is located. When two adjacent plates 600 are overlapped by the locking protrusion 800 and the locking recess 900, the interlocking structure formed by the locking protrusion 800 and the locking recess 900 has its top and bottom surfaces flush with the top and bottom surfaces of the plates 600 respectively. On the one hand, the overall flatness of the connecting layer 400 is ensured, and on the other hand, the structural strength of the connecting layer 400 is also enhanced.

[0061] Furthermore, the locking protrusion 800 and the locking recess 900 are both in the shape of long strips, that is, the locking protrusion 800 is a locking convex strip, and the locking recess 900 is a locking groove, and the two extend along the length direction of the corresponding side wall. After adopting the above structure, the length of the locking protrusion 800 and the locking recess 900 is increased, thereby increasing the interlocking contact area after the two adjacent plates 600 are spliced, thereby strengthening the interlocking connection strength, which is conducive to improving the overall structural strength of the connection layer 400 and preventing the plates 600 from offsetting and detaching from each other.

[0062] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A pavement structure for a road surface, comprising a soil compaction layer (100), a crushed stone cushion layer (200), a road surface base layer (300), a connecting layer (400) and a road surface pavement layer (500) which are sequentially stacked and connected from bottom to top, characterized in that: The connection layer (400) comprises a plurality of plates (600) spliced ​​in sequence, wherein the plates (600) are pressure-resistant pads; the pressure-resistant pads are elastic pressure-resistant pads; and the elastic pressure-resistant pads are EPP plates (600) or EVA plates (600).

2. The paving structure for a road surface according to claim 1, characterized in that: The thickness of the connecting layer (400) is 10-50 mm.

3. The paving structure for a road surface according to claim 1, characterized in that: The connection layer (400) is provided with a water-permeable through hole (700), and two openings of the water-permeable through hole (700) are respectively arranged on the top surface and the bottom surface of the connection layer (400).

4. The paving structure for a road surface according to claim 3, characterized in that: The water-permeable through hole (700) comprises a first water-permeable hole (701) and a second water-permeable hole (702); the first water-permeable hole (701) is arranged on the plate (600), and the second water-permeable hole (702) is formed by enclosing adjacent plates (600).

5. The paving structure for a road surface according to claim 3, characterized in that: The water-permeable through holes (700) are densely distributed on the connection layer (400).

6. The paving structure for a road surface according to claim 4, characterized in that: The top surface of the connection layer (400) is provided with a guide groove (110), and the guide groove (110) is connected between the top openings of two adjacent water-permeable through holes (700).

7. The paving structure for a road surface according to any one of claims 1 to 5, characterized in that: Locking protrusions (800) and locking recesses (900) are provided between adjacent plates (600) for interlocking the plates (600).

8. The paving structure for a road surface according to any one of claims 1 to 5, characterized in that: The pavement base layer (300) is a permeable pavement base layer (300).

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