Prefabricated temporary pavement splicing assembly and paving construction method thereof
The prefabricated temporary pavement components, with their hollow design and interlocking slots, solve the problems of heavy weight and easy cracking, and achieve lightweight, easy-to-assemble and reusable temporary road materials, reducing transportation and disassembly costs and improving the durability of the pavement structure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- THE FOURTH OF CHINA EIGHTH ENG BUREAU
- Filing Date
- 2024-05-11
- Publication Date
- 2026-07-31
AI Technical Summary
Existing temporary road materials are heavy, have high disassembly and transportation costs, are prone to cracking, and are difficult to reuse. Traditional plastic roadbed panels have limited functionality and are inconvenient to disassemble and assemble.
The lightweight base and cylindrical support components with a hollow design, combined with the insertion slots and ring-type buckle connection, enable the rapid assembly and disassembly of the lightweight base and the roadbed box. The hollow design reduces the amount of material used and enhances the structural strength.
It has enabled the development of lightweight, easy-to-assemble and disassemble, and reusable temporary pavement materials, reducing transportation and disassembly costs and improving the durability of pavement structures.
Smart Images
Figure CN118480999B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of prefabricated temporary pavement technology, and in particular to a prefabricated prefabricated temporary pavement splicing component and its paving construction method. Background Technology
[0002] Construction often necessitates the construction of temporary roads to meet the temporary passage needs of personnel and vehicles. Early temporary roads typically used slurry-based pavements, cement-stabilized soil pavements, or lime-stabilized crushed stone pavements. Because these pavements were not hardened, they were prone to dust in windy weather and mud in rainy weather, hindering traffic. Modern temporary roads generally use low-grade cement concrete for hardening. The common practice is to level the base layer and then directly pour low-grade cement concrete. This method is relatively inexpensive and therefore widely used in construction. However, because the foundation is not properly treated, after a period of use, especially with heavy construction vehicle traffic, the concrete pavement is prone to cracking, mainly due to uneven settlement of the roadbed.
[0003] The lifespan of temporary roads is generally consistent with the project lifecycle; that is, once the project is completed, the temporary roads are no longer needed, and the original temporary roads often need to be demolished. The demolition process is time-consuming and labor-intensive, and the resulting concrete blocks generate a large amount of construction waste. Therefore, there is an urgent need for a reusable temporary pavement during the construction process.
[0004] A common practice is to use precast concrete slabs. For example, publication numbers CN207176425U and CN202298407U both use steel mesh as the framework and precast cement concrete slabs as the hardened pavement material to achieve the purpose of being disassembled and reusable. Because of the added steel mesh, the thickness of this type of precast pavement can be reduced, typically to 10 cm. This temporary pavement is not fundamentally different from hardened cement concrete pavement. Although reusable, the slabs themselves are heavy, resulting in high costs for disassembly, assembly, and transportation. Furthermore, they are prone to breakage and cracking after being driven over by heavy construction vehicles, making actual recycling difficult.
[0005] Another method for constructing temporary pavements is to lay 18mm steel plates directly onto the areas where traffic is required. Similar methods include steel plate welded roadbed boxes (CN117248408A, CN117071355A) and plastic roadbed plates (CN117071355A, CN117071355A).
[0006] While steel roadbed plates and roadbed boxes have high reusability, they are relatively heavy and inconvenient for disassembly, assembly, and transportation. Plastic roadbed plates are generally made of extruded or molded polyethylene plastic, typically 1-10cm thick, and most are solid, though some are hollow. They have anti-slip textures on the surface. Because polyethylene plastic is lightweight, it is easy to recycle. Due to its limited function, plastic roadbed plates are currently mainly used for lawn protection, factory and mining roads, and temporary roads for wind power generation.
[0007] Therefore, it is evident that providing a lightweight, easy-to-assemble and reusable road surface material and its structure is an urgent temporary road solution for construction projects. Summary of the Invention
[0008] Based on the technical problems existing in the background technology, the present invention proposes a prefabricated assembled temporary road splicing component and its paving construction method.
[0009] The present invention proposes a prefabricated temporary road splicing component, which includes a lightweight base with a hollow design and four integrally formed cylindrical support members, the four cylindrical support members being evenly distributed in the middle of the lightweight base. The lightweight base has two protruding first inserts fixedly installed on each of its adjacent sides, and two recessed first slots are provided on the other two adjacent sides for inserting the first inserts. The upper ends of the multiple cylindrical support members are connected to a roadbed box. The roadbed box has four circular holes that mate with the cylindrical support members. Two protruding second inserts are fixedly installed on the adjacent sides of the roadbed box, and two recessed second slots are opened on the other adjacent sides. The upper surface of the roadbed box is covered with an anti-slip layer.
[0010] As a further improvement of the present invention, the upper part of the lightweight base adopts a hollow design to reduce the amount of material used and achieve lightweighting. The hollow design is composed of two squares and a circle tangent to the inner small square, and there are radial stiffening ribs radiating outward from the cylindrical support, which penetrate the two squares and the circle to form a grid-like base.
[0011] As a further improvement of the present invention, the cylindrical support is conical, with a smaller top and a larger bottom, and has a cylindrical connector at the top for connecting with the roadbed box panel. The cylindrical connector has a circular protrusion in the middle as a ring-type buckle.
[0012] As a further improvement of the present invention, the roadbed box adopts a solid design to improve the overall rigidity of the roadbed box and prevent excessive deformation when the vehicle is driving.
[0013] As a further improvement of the present invention, the positions of the four circular holes correspond to the cylindrical connectors of multiple cylindrical support members, and the inner wall of each circular hole has a ring of cylindrical protrusions for forming a ring-type snap-fit connection with the cylindrical connectors.
[0014] As a further improvement of the present invention, the thickness of the anti-slip layer is 1-5mm, and the anti-slip layer is applied by first uniformly brushing on a layer of adhesive, and then uniformly spreading a layer of anti-slip particles. The adhesive is polyurethane or epoxy resin, and the anti-slip particles are any one or more of corundum, natural pebbles or rubber particles.
[0015] This invention also proposes a prefabricated temporary pavement construction method, comprising the following steps: S1. First, drainage ditches 60cm wide and 30cm deep are set on both sides of the road. The road surface is sloped at 4% from the center line to both sides to facilitate drainage. For S2, the entire roadbed is paved with 30-60% graded crushed stone, 20-40% clay, and 10-20% fine sand. The maximum particle size of the graded crushed stone should not exceed 20mm. It is then compacted using a road roller to a compaction degree of not less than 90%. 1-10% inorganic binder can be added to the roadbed material. S3. After compaction, a layer of emulsified asphalt tack coat is spread on the surface of the subgrade. The amount of tack coat is 0.5-1.5L / m2. The purpose of the tack coat is to prevent moisture from penetrating the subgrade and causing the base course to fail. S4, the drying time of the tack coat is 24 hours in summer and 48 hours in winter. After the tack coat is completely dry, a 1-3cm layer of fine sand is sprinkled on the surface of the tack coat as a leveling layer. S5. Finally, the roadbed boxes are fixed with suction cups and lifted to the predetermined position by a truck crane. Adjacent roadbed boxes are connected and tightened one by one. Finally, the roadbed boxes are finely adjusted to keep the roadbed box elevation consistent.
[0016] As a further improvement of the present invention, the inorganic binder is any one or more of cement, lime, and gypsum.
[0017] Compared with existing technologies, the advantages of this prefabricated assembled temporary pavement splicing component are: The upper part of the lightweight base adopts a hollow design. The shape of the hollow design consists of two squares and a circle tangent to the inner small square. There are radial stiffening ribs radiating outward from the cylindrical support, which run through the two squares and the circle to form a grid-like base. The radial stiffening ribs enhance the structural strength of the base, while the hollow design reduces the amount of material used, thus achieving lightweighting. By utilizing the fit between the cylindrical support and the circular hole of the roadbed box, the top of the cylindrical support has a cylindrical connector, and the middle of the cylindrical connector has a circular protrusion structure for connecting with the roadbed box panel. The inner wall of the circular hole has a circular protrusion for forming a ring-type snap-fit connection with the cylindrical connector. This allows for quick assembly between the lightweight base and the roadbed box, making it easy to use. The design of the first insert and the first slot allows for the quick assembly of adjacent lightweight bases. The design of the second insert and the second slot allows for the quick assembly of adjacent roadbed boxes, which is also easy to disassemble, thus achieving the purpose of easy assembly and disassembly.
[0018] This invention utilizes the hollow design of a lightweight base to reduce material usage and achieve lightweighting. By connecting the cylindrical support to the roadbed box, rapid assembly between the lightweight base and the roadbed box is achieved, thus achieving the purpose of being lightweight, easy to assemble and disassemble, and reusable. Attached Figure Description
[0019] Figure 1 This is a structural schematic diagram of a prefabricated assembled temporary road splicing component proposed in this invention; Figure 2 This is a structural schematic diagram of a lightweight base and cylindrical support component for a prefabricated temporary road splicing assembly proposed in this invention. Figure 3 This is a top view schematic diagram of a lightweight base for a prefabricated temporary road splicing component proposed in this invention. Figure 4 This is a schematic diagram of the roadbed box of a prefabricated assembled temporary pavement splicing component proposed in this invention; Figure 5 This is a cross-sectional structural diagram of the roadbed box of a prefabricated assembled temporary road surface splicing component proposed in this invention.
[0020] In the diagram: 1 Lightweight base, 2 Cylindrical support, 3 First insert, 4 First slot, 5 Second insert, 6 Road base box, 7 Second slot, 8 Anti-slip layer, 9 Round hole. Detailed Implementation
[0021] The present invention will be further explained below with reference to specific embodiments.
[0022] Reference Figures 1-5 The present invention proposes a prefabricated temporary road splicing component, which includes a lightweight base 1 with a hollow design and four integrally formed cylindrical support members 2, the four cylindrical support members 2 being evenly distributed in the middle of the lightweight base 1. The upper part of the lightweight base 1 adopts a hollow design to reduce the amount of material used and achieve lightweighting. The hollow design is composed of two squares and a circle tangent to the inner small square. There are 32 radial stiffening ribs radiating outward from the cylindrical support 2, which run through the two squares and the circle to form a grid-like base. The cylindrical support 2 is conical, smaller at the top and larger at the bottom, with a cylindrical connector at the top for connecting to the panel of the roadbed box 6. The cylindrical connector has a circular protrusion in the middle, which serves as a ring-type buckle. Two protruding first inserts 3 are fixedly installed on both adjacent sides of the lightweight base 1, and two recessed first slots 4 are opened on the other adjacent sides for the insertion of the first inserts 3, which can quickly assemble adjacent lightweight bases 1. The upper ends of multiple cylindrical support members 2 are connected to a roadbed box 6. The roadbed box 6 adopts a solid design to improve the overall rigidity of the roadbed box 6 and prevent excessive deformation when the vehicle is driving. The roadbed box 6 has four round holes 9 that cooperate with the cylindrical support members 2. The positions of the four round holes 9 correspond to the cylindrical connectors of the multiple cylindrical support members 2. The inner wall of the round hole 9 has a ring of cylindrical protrusions for forming a ring-type snap-fit connection with the cylindrical connectors. Two protruding second inserts 5 are fixedly installed on the adjacent sides of the roadbed box 6, and two recessed second slots 7 are opened on the other adjacent sides, which can quickly assemble adjacent roadbed boxes 6. The upper surface of the roadbed box 6 is covered with an anti-slip layer 8. The thickness of the anti-slip layer 8 is 1-5mm. The anti-slip layer 8 is laid by first uniformly applying a layer of adhesive and then uniformly spreading a layer of anti-slip particles. The adhesives are either polyurethane or epoxy resin. Polyurethane adhesives can adapt to the bonding of substrates with different coefficients of thermal expansion, forming a soft-hard transition layer between the substrates. They not only have strong adhesion but also excellent cushioning and shock absorption functions. Polyurethane adhesives have superior low-temperature and ultra-low-temperature performance compared to all other types of adhesives. They are characterized by low VOC content, low or no environmental pollution, and non-flammability. Epoxy resin adhesives, on the other hand, are engineering adhesives formulated from epoxy resin base materials, curing agents, diluents, accelerators, and fillers. They possess many excellent properties, such as good adhesion, good functionality, relatively low price, and simple bonding process. The anti-slip particles are any one or more of the following: corundum, natural pebbles, or rubber particles. The surface of the rubber particles is rough, and this rough surface structure can significantly increase the friction coefficient of the ground, thereby increasing the anti-slip performance of the ground. In addition, the rubber particle material has high elasticity, which plays a certain role in cushioning. The anti-slip layer 8 can also be an integrally molded anti-slip pattern. The anti-slip layer 8 can be laid in the factory and then transported directly to the construction site for hoisting, or it can be laid after the assembly is completed on the construction site.
[0023] In this invention, the hollow design of the lightweight base 1 is used to reduce the amount of material used and achieve lightweighting. The connection between the cylindrical support 2 and the roadbed box 6 enables quick assembly between the lightweight base 1 and the roadbed box 6, thereby achieving the purpose of being lightweight, easy to disassemble and reusable.
[0024] This invention also proposes a prefabricated temporary pavement construction method, comprising the following steps: S1. First, drainage ditches 60cm wide and 30cm deep are set on both sides of the road. The road surface is sloped at 4% from the center line to both sides to facilitate drainage. For S2, the entire roadbed is paved with 30-60% graded crushed stone, 20-40% clay, and 10-20% fine sand. The maximum particle size of the graded crushed stone should not exceed 20mm. It is then compacted using a road roller to a compaction degree of not less than 90%. 1-10% inorganic binder can be added to the roadbed material; the inorganic binder can be any one or more of cement, lime, and gypsum. S3. After compaction, a layer of emulsified asphalt tack coat is spread on the surface of the subgrade. The amount of tack coat is 0.5-1.5L / m2. The purpose of the tack coat is to prevent moisture from penetrating the subgrade and causing the base course to fail. S4, the drying time of the tack coat is 24 hours in summer and 48 hours in winter. After the tack coat is completely dry, a 1-3cm layer of fine sand is sprinkled on the surface of the tack coat as a leveling layer. S5. Finally, the roadbed box 6 is fixed with suction cups and lifted to the predetermined position by a truck crane. The adjacent roadbed boxes 6 are connected and tightened one by one. Finally, the roadbed boxes 6 are finely adjusted to keep the elevation of the roadbed boxes 6 consistent.
[0025] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.
[0026] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.
Claims
1. A prefabricated temporary road pavement assembly, characterized in that, It includes a lightweight base (1) with a hollow design and four integrally formed cylindrical support members (2), the four cylindrical support members (2) being evenly distributed in the middle of the lightweight base (1); The lightweight base (1) has two protruding first inserts (3) fixedly installed on both adjacent sides, and two recessed first slots (4) are opened on the other adjacent sides for the insertion of the first inserts (3). The upper ends of the four cylindrical support members (2) are connected to the roadbed box (6). The roadbed box (6) has four round holes (9) that cooperate with the cylindrical support members (2). Two protruding second inserts (5) are fixedly installed on the adjacent sides of the roadbed box (6), and two recessed second slots (7) are opened on the other adjacent sides. The upper surface of the roadbed box (6) is covered with an anti-slip layer (8).
2. A prefabricated assembly for temporary road pavement according to claim 1, characterized in that, The upper part of the lightweight base (1) adopts a hollow design to reduce the amount of material used and achieve lightweighting. The hollow design is composed of two squares and a circle tangent to the inner small square. There are radial stiffening ribs (32) radiating outward from the cylindrical support (2), which penetrate the two squares and the circle to form a grid-like base.
3. A prefabricated assembled temporary road splicing component according to claim 1, characterized in that, The cylindrical support (2) is conical, smaller at the top and larger at the bottom, with a cylindrical connector at the top for connecting to the panel of the roadbed box (6). The cylindrical connector has a circular protrusion in the middle as a ring-shaped buckle.
4. A prefabricated assembled temporary road splicing component according to claim 1, characterized in that, The roadbed box (6) adopts a solid design to improve the overall rigidity of the roadbed box (6) and prevent excessive deformation when the vehicle is in motion.
5. A prefabricated assembled temporary road splicing component according to claim 3, characterized in that, The positions of the four circular holes (9) correspond to the cylindrical connectors of the four cylindrical support members (2). The inner wall of the circular hole (9) has a cylindrical protrusion for forming a ring-shaped snap connection with the cylindrical connector.
6. A prefabricated assembled temporary road splicing component according to claim 1, characterized in that, The thickness of the anti-slip layer (8) is 1-5mm. The anti-slip layer (8) is applied by first uniformly brushing on a layer of adhesive, and then uniformly spreading a layer of anti-slip particles. The adhesive is polyurethane or epoxy resin, and the anti-slip particles are any one or more of corundum, natural pebbles or rubber particles.
7. A method for paving a prefabricated temporary pavement splicing component according to any one of claims 1-6, characterized in that, Includes the following steps: S1. First, drainage ditches 60cm wide and 30cm deep are set on both sides of the road. The road surface is sloped at 4% from the center line to both sides to facilitate drainage. S2, the entire roadbed is laid with 30-60% graded crushed stone, 20-40% clay and 10-20% fine sand. The maximum particle size of the graded crushed stone shall not exceed 20mm. Then, it is compacted by a road roller with a compaction degree of not less than 90%. 1-10% inorganic cementitious agent can be added to the roadbed material. S3. After compaction, a layer of emulsified asphalt tack coat is spread on the surface of the subgrade. The amount of tack coat is 0.5-1.5L / m2. The purpose of the tack coat is to prevent moisture from penetrating the subgrade and causing the base course to fail. S4, the drying time of the tack coat is 24 hours in summer and 48 hours in winter. After the tack coat is completely dry, a 1-3cm layer of fine sand is sprinkled on the surface of the tack coat as a leveling layer. S5. Finally, the roadbed box (6) is fixed with a suction cup and lifted to the predetermined position by a truck crane. The adjacent roadbed boxes (6) are connected and tightened one by one. Finally, the roadbed boxes (6) are finely adjusted to keep the elevation of the roadbed boxes (6) consistent.
8. The paving construction method for a prefabricated assembled temporary road splicing component according to claim 7, characterized in that, The inorganic binder is any one or more of cement, lime, and gypsum.