Precast concrete walkway slab

Abstract

This utility model provides a precast concrete walkway slab, belonging to the technical field of walkway slabs. The walkway slab includes a slab body and an anti-slip structure. The surfaces of the slab body on opposite sides along its length are overlapping surfaces, both of which are inclined in the same direction along the length, so that adjacent slab bodies can overlap each other in the length direction. The anti-slip structure includes anti-slip grooves and anti-slip protrusions. The surfaces of the slab body on opposite sides along its thickness direction are a first surface and a second surface, respectively. Multiple anti-slip protrusions are provided on the first surface, and multiple anti-slip grooves are provided on the second surface, extending from one end to the other along the length direction. These grooves are spaced apart along the width direction. The walkway slab of this utility model can improve anti-slip performance, the convenience of splicing multiple walkway slabs, and the overall integrity after splicing.

Description

Technical Field

[0001] This utility model relates to the field of paving slab technology, and in particular to a precast concrete paving slab. Background Technology

[0002] There are different types of precast concrete paving slabs on the market. The main method involves prefabricating concrete slabs in a factory and then transporting them to the construction site for direct assembly. The differences between these methods lie in the splicing joint processes of the precast paving slabs, and the inclusion of planting holes for landscaping. Disadvantages include the large size and weight of the precast concrete blocks, making construction inconvenient; the flat underside provides less friction with the soil, making them prone to slipping and displacement; the flat top surface increases the risk of falls and injuries in freezing weather; and the variety of slab types makes identification difficult on the construction site. Utility Model Content

[0003] This utility model provides a precast concrete walkway slab, the purpose of which is to improve the anti-slip performance of the second surface of the precast concrete walkway slab, the friction of the first surface, and to improve the convenience of splicing multiple precast concrete walkway slabs and the overall integrity after splicing.

[0004] To achieve the above objectives, this utility model provides a precast concrete walkway slab, comprising:

[0005] The main body of the board has two overlapping surfaces on opposite sides along the length direction. Both overlapping surfaces are inclined in the same direction along the length direction so that two adjacent main bodies of the board can overlap each other in the length direction.

[0006] The anti-slip structure includes anti-slip grooves and anti-slip protrusions. The surfaces of the main body of the plate along the thickness direction on opposite sides are a first surface and a second surface, respectively. There are multiple anti-slip protrusions, which are disposed on the first surface. The anti-slip grooves are disposed on the second surface and extend from one end of the second surface to the other end along the length direction. There are multiple anti-slip grooves, which are spaced apart along the width direction of the main body of the plate.

[0007] In one embodiment, the anti-slip protrusion has a size ranging from 15 mm to 20 mm in the thickness direction, and the anti-slip protrusion protruding from the first surface portion along the thickness direction has a size ranging from 5 mm to 10 mm.

[0008] In one embodiment, the board body has planting holes that extend through the board body along the thickness direction so that the planting holes can accommodate at least a portion of the green plants.

[0009] In one embodiment, the precast concrete walkway slab includes reinforcing bars, which are arranged at preset intervals along the width and length directions of the slab body.

[0010] In one embodiment, the angle between the overlapping surface and the length direction of the main body of the plate ranges from 50° to 70°.

[0011] In one embodiment, the anti-slip groove is configured to be integrally cast with the plate body.

[0012] In one embodiment, the precast concrete walkway slab is characterized in that the precast concrete walkway slab includes a beak, the beak is disposed on one side of the slab body along the length direction or the width direction, and the beak protrudes from the second surface along the thickness direction of the slab body.

[0013] The above-mentioned solution of this utility model has the following beneficial effects:

[0014] In this embodiment, the lateral overlapping surfaces are all inclined in the same direction along the length, allowing adjacent slabs to overlap and support each other. Even when the surface of the precast concrete walkway slab is uneven, the two overlapping slabs can still support each other, resulting in better overall integrity of the pavement paved with the precast concrete walkway slabs of this application. Furthermore, the overlapping surfaces are inclined, allowing for direct molding using molds, eliminating the need for tongue-and-groove joints, pins, or grouting connections on the slabs. This simplifies production and reduces the production cost of precast concrete walkway slabs. During the overlapping of adjacent precast concrete walkway slabs, the overlapping surface of the latter slab is directly overlapped with the overlapping surface of the former, eliminating the need for complex connection operations and reducing the complexity and difficulty of laying precast concrete walkway slabs. Anti-slip protrusions are provided on the first surface to increase the surface roughness of the precast concrete walkway slab, making it less likely for pedestrians to slip and fall even in freezing weather. The anti-slip grooves protruding from the second surface can be inserted into the subbase or ground, increasing the friction between the precast concrete walkway slab and the subbase or ground. This makes the precast concrete walkway slab less likely to move relative to the ground, improving its anti-slip ability. Consequently, it helps to improve the overall integrity of the precast concrete walkway slab after it is laid, resulting in better bonding with the subbase. It can also be used for layouts without a subbase.

[0015] Other beneficial effects of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a precast concrete walkway slab in one embodiment of the present invention;

[0017] Figure 2for Figure 1 Schematic diagram of the cross-sectional structure at point AA;

[0018] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure at point BB;

[0019] Figure 4 This is a schematic diagram of the structure of a precast concrete walkway slab in another embodiment of the present invention.

[0020] [Explanation of Labels in the Attached Image]

[0021] 1. Main body of the plate; 11. Overlapping surface; 12. First surface; 13. Second surface; 14. Planting hole; 2. Anti-slip structure; 21. Anti-slip groove; 22. Anti-slip protrusion; 3. Reinforcing steel; 4. Beak. Detailed Implementation

[0022] To make the technical problems, solutions, and advantages of this utility model clearer, a detailed description will be provided below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a locking connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] This application provides a precast concrete walkway slab, laid on the ground for pedestrian use. The walkway slab utilizes a prefabricated design to save on construction costs, improve performance, and extend service life. Its flexible assembly and combination methods allow for safe use even in harsh weather conditions (rain, freezing). Both the upper and lower surfaces of the walkway slab offer good anti-slip properties. It can be used without a base layer, or with a base layer for stronger adhesion. Multiple slabs are easy to splice, and the overall integrity after assembly is good. For details, please refer to... Figure 1 The precast concrete walkway slab comprises a slab body 1 and an anti-slip structure 2. The concrete strength of the slab body 1 can be C30 or high-grade concrete with foaming agent. For example, the slab body 1 can be configured as a cuboid or, etc. Figure 1 The parallelepiped shown. The dimensions of the main body 1 in the width, length, and height directions are not limited; for example, it can be 300mm*800mm*80mm or 350mm*80mm*80mm, so that the precast concrete walkway slab of this application is smaller in volume and lighter in weight, thereby enabling a single person to install the precast concrete walkway slab, making construction more convenient. Please refer to... Figure 1 and Figure 3 The surfaces of the main body 1 on opposite sides along its length are defined as overlapping surfaces 11. Both overlapping surfaces 11 are inclined in the same direction along the length, that is, both overlapping surfaces 11 are as follows: Figure 3 The inclined surfaces shown, both sloping in the same direction, allow the main body 1 of the slab to form a parallelepiped, enabling adjacent main bodies 1 to overlap and support each other along their length. Even when the surface of the precast concrete walkway slab is uneven, the overlapping main bodies 1 can still support each other, resulting in better overall integrity of the pavement paved with the precast concrete walkway slabs of this application. Furthermore, the overlapping surface 11 is inclined, allowing for direct molding using a mold, eliminating the need for tongue-and-groove joints, pins, or grouting connections on the main body 1. This simplifies production, making it quick and easy, and reducing the production cost of the precast concrete walkway slabs. During the overlapping of two adjacent precast concrete walkway slabs, the overlapping surface 11 of the latter slab is directly overlapped onto the overlapping surface 11 of the former slab, eliminating the need for complex connection operations and reducing the complexity and difficulty of laying precast concrete walkway slabs. For example… Figure 1 and Figure 3 The direction indicated by R1 is the length direction of the main body 1 of the plate.

[0026] Please see Figures 1-3 The surfaces of the main body 1 on opposite sides along the thickness direction are the first surface 12 and the second surface 13, which are the two surfaces with the largest area in the main body 1. For example, Figure 2 and Figure 3The direction indicated by R3 is the thickness direction of the slab body 1. The anti-slip structure 2 includes anti-slip grooves 21 and anti-slip protrusions 22. The anti-slip protrusions 22 can be crushed stone, and there are multiple anti-slip protrusions 22 disposed on the first surface 12. For example, the first surface 12 is the surface of the slab body 1 that faces away from the ground along the thickness direction. The average density of the anti-slip protrusions 22 disposed on the first surface 12 is 20 per square decimeter to improve the roughness of the surface of the precast concrete walkway slab, so that even in freezing weather, pedestrians are less likely to slip and fall.

[0027] The anti-slip groove 21 can be configured as a washboard shape or a dotted shape, and the anti-slip groove 21 is provided on the second surface 13. For example, the second surface 13 is the surface of the board body 1 closest to the ground along the thickness direction, and is the surface in direct contact with the ground. The anti-slip groove 21 can protrude from the second surface 13 by a maximum of 10mm along the thickness direction of the board body 1. The anti-slip groove 21 extends from one end of the second surface 13 to the other end along the length direction of the board body 1, and there are multiple anti-slip grooves 21, which are spaced apart along the width direction of the board body 1. For example, Figure 1 and Figure 2 The direction indicated by R2 is the width direction of the main body 1 of the slab. It should be noted that the precast concrete walkway slab of this application can be wet-laid according to the construction process of relevant road paving materials, that is, using cement mortar or other mixed materials as a base layer to lay the precast concrete walkway slab on the ground, or it can be directly laid on a compacted, flat ground. The base layer should be soil, sand, or small-particle gravel with a certain bearing capacity. The second surface 13 of the main body 1 is in contact with the base layer or ground. The anti-slip grooves 21 protruding from the second surface 13 can be inserted into the base layer or ground, increasing the friction between the precast concrete walkway slab and the base layer or ground. This makes the precast concrete walkway slab less prone to movement relative to the ground, improving the anti-slip ability of the precast concrete walkway slab, and thus improving the overall integrity of the precast concrete walkway slab after laying. It should also be noted that the paving slabs are usually laid along their own length in the extension direction of the paving. When pedestrians walk on the paving, the friction force exerted by the pedestrians on the paving slabs is also along the length direction of the slab body 1. The anti-slip grooves 21 are set along the length direction of the slab body 1, which enhances the anti-slip ability of the precast concrete paving slabs in the length direction and helps to improve the overall integrity of the precast concrete paving slabs after laying.

[0028] In one embodiment, please refer to Figures 1-3The anti-slip protrusions 22 have a thickness range of 15mm to 20mm in the thickness direction of the slab body 1, and the portion of the anti-slip protrusions 22 extending beyond the first surface 12 in the thickness direction ranges from 5mm to 10mm. It should be noted that the anti-slip protrusions 22, which are made of crushed stone, can be spread on the first surface 12 during the casting, solidification, and hardening process of the slab body 1. The anti-slip protrusions 22, with a thickness range of 15mm to 20mm, protrude from the first surface 12 by 25mm to 10mm, ensuring that the anti-slip protrusions 22 are embedded within the slab body 1 by 5mm to 15mm. This provides sufficient embedding depth, preventing the anti-slip protrusions 22 from easily detaching from the slab body 1 and improving the service life of the precast concrete walkway slab. Furthermore, it provides sufficient outward protrusion height, ensuring sufficient friction on the surface of the precast concrete walkway slab, reducing the risk of slipping and falling even in freezing weather.

[0029] In one embodiment, please refer to Figure 1 The main body of the board 1 has planting holes 14. Figure 1 The dashed box indicates the location of the planting holes 14. The planting holes 14 are inserted into the slab body 1 along the thickness direction so that the planting holes 14 can accommodate at least part of the green plants and allow the green plants to take root in the ground through the planting holes 14, thereby improving the ecological harmony of the precast concrete walkway slab. For example, the planting holes 14 can be arranged in the slab body 1 as needed.

[0030] In one embodiment, please refer to Figures 2-4 The precast concrete walkway slab may also include steel bars 3 with a diameter of 4mm. The steel bars 3 are arranged at a predetermined interval of 100mm along the width and length directions of the slab body 1 to improve the bending resistance of the slab body 1 and reduce the possibility of slab body 1 breaking.

[0031] In one embodiment, please refer to Figure 3 The angle between the overlapping surface 11 and the longitudinal direction of the main body 1 is between 50° and 70°, so that the main body 1 can maintain sufficient strength within the overlapping surface 11 and facilitate the overlapping of adjacent main bodies 1. For example, Figure 3 The included angle shown in S1 is the included angle between the overlapping surface 11 and the length direction of the main body 1 of the plate, and S1 can be 60°.

[0032] In one embodiment, the anti-slip groove 21 is configured to be integrally cast with the slab body 1 to improve the connection strength between the anti-slip groove 21 and the slab body 1, thereby improving the overall integrity of the precast concrete walkway slab. For example, the material of the anti-slip groove 21 can also be concrete, and the anti-slip groove 21 can be integrally cast with the slab body 1. It is understood that the two can also be formed separately and then connected.

[0033] In one embodiment, please refer to Figure 4 The precast concrete walkway slab may include a "beak" 4, which is disposed on one side of the slab body 1 along the length or width direction. The beak 4 protrudes from the second surface 13 along the thickness direction of the slab body 1. The size of the beak 4 protruding from the second surface 13 can range from 15mm to 20mm, and the thickness of the beak 4 can be 20mm. This allows the precast concrete walkway slab of this application to also be used for step paving. For example, if the precast concrete walkway slab of this application is used as a step tread, the beak 4 can be provided on one side of the slab body 1 along the length or width direction, serving as a drip line and a step kick panel locking clip.

[0034] For example, please refer to Figure 1 You can also Figure 1 Relevant information, such as logos and anti-counterfeiting marks, is printed within the solid-lined square on the main body 1 of the middle plate.

[0035] For example, the mold for making precast concrete walkway slabs can be one mold for one precast concrete walkway slab, or multiple precast concrete walkway slabs can be cast in one mold and then cut into shape according to size requirements.

[0036] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A precast concrete walkway slab characterized by, include: The main body of the board has two overlapping surfaces on opposite sides along the length direction. Both overlapping surfaces are inclined in the same direction along the length direction so that two adjacent main bodies of the board can overlap each other in the length direction. The anti-slip structure includes anti-slip grooves and anti-slip protrusions. The surfaces of the main body of the plate along the thickness direction on opposite sides are a first surface and a second surface, respectively. There are multiple anti-slip protrusions, which are disposed on the first surface. The anti-slip grooves are disposed on the second surface and extend from one end of the second surface to the other end along the length direction. There are multiple anti-slip grooves, which are spaced apart along the width direction of the main body of the plate.

2. The precast concrete walkway slab of claim 1, wherein, The anti-slip protrusion has a size ranging from 15mm to 20mm in the thickness direction, and the anti-slip protrusion extends from the first surface portion in the thickness direction in the range of 5mm to 10mm.

3. The precast concrete walkway slab of claim 1, wherein, The board body has planting holes that extend through the board body along the thickness direction so that the planting holes can accommodate at least a portion of the green plants.

4. The precast concrete walkway slab of claim 1, wherein, The precast concrete walkway slab includes reinforcing bars, which are arranged at preset intervals along the width and length directions of the slab body.

5. The precast concrete walkway slab of claim 1, wherein, The angle between the overlapping surface and the length direction of the main body of the plate is in the range of 50° to 70°.

6. The precast concrete walkway slab of claim 1, wherein, The anti-slip groove is configured to be integrally cast with the plate body.

7. The precast concrete walkway slab according to claim 1, characterized in that, The precast concrete walkway slab includes an eagle beak, which is disposed on one side of the slab body along the length direction or the width direction, and the eagle beak protrudes from the second surface along the thickness direction of the slab body.

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