A prefabricated steel fiber reinforced concrete pavement structure

Abstract

The utility model belongs to the technical field of assembly type pavement structure, concretely relates to an assembly type steel fiber reinforced concrete pavement structure. Including a plurality of rectangular steel fiber reinforced concrete pavement main bodies that are sequentially spliced, the long side both ends of main body are equipped with first, second butt joint spare respectively, be equipped with the bellows of steel fiber reinforced concrete protective layer on butt joint spare, splice through the connecting module between main body, and the module contains prefabricated steel fiber reinforced concrete slab and both end connecting block, and connecting block is equipped with butt joint hole and is adapted with bellows, protective layer and the one -to -one corresponding quantity. The pavement main body is from below to above in proper order base layer, steel fiber reinforced concrete layer, anti -skid imitative stone particle wear -resisting surface layer. This structure splices convenient, strong stability and wear -resisting antiskid, can high -efficiently adapt to various pavement construction scene, promotes pavement construction efficiency and service life.

Description

Technical Field

[0001] This utility model belongs to the field of prefabricated pavement structure technology, specifically relating to a prefabricated steel fiber reinforced concrete pavement structure. Background Technology

[0002] Precast concrete pavement is a type of pavement formed by assembling precast concrete blocks. Using steel fiber reinforced concrete precast blocks can improve strength and save resources, thus becoming the preferred choice for precast concrete blocks.

[0003] Prefabricated concrete pavement is quick to construct and can be carried out at night in busy traffic areas. It does not require a large amount of concrete pouring and hammering, so the construction noise generated is relatively small, reducing the impact on surrounding residents and traffic congestion.

[0004] Existing prefabricated pavement structures all use ordinary precast concrete components for their pavement units. Ordinary precast concrete slabs have problems such as heavy weight, insufficient impact and fatigue resistance, poor load transfer capacity between slab joints leading to misalignment, and poor overall integrity, making it difficult to meet the requirements of modern transportation for high-performance, long-life, and rapid construction of pavements. Steel fiber reinforced concrete, due to its excellent tensile, crack, and impact resistance properties, is widely used in pavement engineering, but a systematic precast assembly technology system has not yet been formed.

[0005] In the prior art, utility model patent CN 222908459U, entitled "A Prefabricated Recycled Concrete Pavement Structure," discloses a method comprising multiple sequentially spliced ​​steel fiber reinforced concrete pavement bodies. Each steel fiber reinforced concrete pavement body has a rectangular structure. A first connecting piece is provided at one end of the long side of each body, and a second connecting piece matching the first connecting piece is provided at the other end. Both the first and second connecting pieces are positioned along the length of the steel fiber reinforced concrete pavement body. By providing the first and second connecting pieces on opposite sides of each steel fiber reinforced concrete pavement body, adjacent bodies can be assembled by using the first connecting piece on one body to cooperate with the second connecting piece on the other, thus achieving the sequential splicing of multiple steel fiber reinforced concrete pavement bodies. This solution improves construction efficiency and reduces on-site noise to a certain extent. However, under heavy load, large temperature difference, and high frequency dynamic load conditions, its rigid joint system reveals the following prominent problems: the snap-fit ​​blocks and the reserved slots must be precisely aligned one by one, and even slight height differences or torsion on site will lead to assembly difficulties and low construction error tolerance; its bolt snap-fit ​​structure is a completely rigid connection with no deformation allowance; under temperature warping or vehicle impact, the tensile stress at the joint edge is concentrated, which is very easy to cause through cracks, which in turn will cause defects such as broken corners and misalignment of the slabs; the snap-fit ​​blocks and the second connecting parts are complementary and heterogeneous, and the slabs can only be laid in a unidirectional sequence. When bidirectional or branch assembly is required at curves, intersections, or emergency repairs, additional reverse components must be prepared, which increases the cost of templates and material management; moreover, the high crushing index of recycled aggregate and the loose interface transition zone lead to a decrease in the flexural and fatigue resistance of the slabs; the existing technology relies only on traditional steel mesh reinforcement, which cannot effectively suppress the propagation of microcracks and is difficult to meet the long service life requirements of heavy-load roads. Therefore, there is an urgent need to develop a new type of prefabricated pavement structure that has high tolerance for construction errors, joints that can be flexibly and rigidly stressed, universal assembly direction, and superior material toughness. Utility Model Content

[0006] The purpose of this utility model is to provide a prefabricated steel fiber reinforced concrete pavement structure to solve the problems of heavy self-weight, insufficient impact resistance and fatigue resistance, and poor overall integrity of ordinary precast concrete slabs in the prior art.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A prefabricated steel fiber reinforced concrete pavement structure includes multiple steel fiber reinforced concrete pavement main bodies spliced ​​sequentially. Each steel fiber reinforced concrete pavement main body has a rectangular structure. A first connecting piece is provided at one end of the long side of each steel fiber reinforced concrete pavement main body, and a second connecting piece identical to the first connecting piece is provided at the other end of the long side of each steel fiber reinforced concrete pavement main body. Both the first and second connecting pieces are arranged along the length direction of the steel fiber reinforced concrete pavement main body. The steel fiber reinforced concrete pavement main bodies are spliced ​​together by connecting modules, and the connecting modules include prefabricated steel fiber reinforced concrete panels.

[0008] The first and second docking parts are evenly provided with a number of corrugated pipes.

[0009] The height of the corrugated pipe is less than the thickness of the main body of the steel fiber reinforced concrete pavement.

[0010] The corrugated pipe is surrounded by a steel fiber reinforced concrete protective layer, and the corrugated pipe and the steel fiber reinforced concrete protective layer are matched and fixed with the connecting module.

[0011] In the connection module, connecting blocks are fixed to both the left and right ends of the precast steel fiber concrete slab.

[0012] The connecting block is uniformly provided with vertically penetrating docking holes, and the corrugated pipe and steel fiber reinforced concrete protective layer are matched and fixed with the docking holes.

[0013] The number of bellows is the same as the number of mating holes on the connecting module, and they correspond one-to-one.

[0014] The main body of the steel fiber concrete pavement includes, from bottom to top, a base layer, a steel fiber concrete layer, and a wear-resistant surface layer.

[0015] The wear-resistant surface layer is made of anti-slip imitation stone particles.

[0016] One end of the connecting module is connected to a first connecting piece of a steel fiber reinforced concrete pavement body, and the other end of the connecting module is connected to a second connecting piece of the steel fiber reinforced concrete pavement body.

[0017] Compared with the prior art, the present invention has the following beneficial effects: This invention improves construction efficiency and meets practical needs by using identical first and second connecting parts on opposite sides of the steel fiber reinforced concrete (SFR) pavement body. This is achieved by connecting adjacent SFR pavement bodies using a single module during assembly. The steel fiber reinforced concrete layer enhances the impact and fatigue resistance of the pavement body, while the connecting module improves its overall integrity and service life. The identical first and second connecting parts, along with corrugated pipes and a steel fiber reinforced concrete protective layer for matching the connecting module, facilitate the assembly of adjacent SFR pavement bodies. The connecting module joins the bodies, and high-strength concrete fills the gaps to integrate the module and the pavement body, ensuring stable and reliable assembly.

[0018] Furthermore, this utility model adopts a prefabricated design, with each steel fiber concrete pavement main body being a rectangular precast component and the connecting module main body being a precast steel fiber concrete slab. Compared with large ordinary precast concrete slabs, it is easier to transport and install, reducing the difficulty of construction hoisting. At the same time, while ensuring strength, the steel fiber concrete material can optimize the cross-sectional dimensions of the components, reduce the self-weight of each main body, improve construction efficiency, and reduce the requirements for foundation bearing capacity.

[0019] Furthermore, the main body of the road surface includes a steel fiber reinforced concrete layer. The steel fibers can disperse stress and inhibit crack propagation. Compared with ordinary precast concrete slabs, it significantly enhances impact resistance and fatigue resistance, and extends the service life of the road surface. In addition, the wear-resistant surface layer uses anti-slip imitation stone particles, which not only improves surface wear resistance but also increases anti-slip performance, making it suitable for high-frequency traffic scenarios.

[0020] Furthermore, the main body of the road surface is spliced ​​with the connecting module through the first and second connecting parts. The corrugated pipes and the outer steel fiber concrete protective layer on the connecting parts are matched and fixed with the connecting holes of the connecting blocks of the connecting modules to form a tightly fitted splicing structure, avoiding gaps or loosening that are easy to occur in traditional splicing, and greatly improving the overall continuity and stability of the road surface. At the same time, the connecting parts are set along the length of the main body of the road surface, further enhancing the overall force transmission effect after splicing. Attached Figure Description

[0021] Figure 1 This is a top view of the main body of the present utility model. Figure 2 This is a top view of the connector of this utility model; Figure 3 This is a frontal cross-sectional view of the main body of this utility model. Figure 4 This is a front view cross-sectional structural diagram of the connector of this utility model; Figure 5 This is a schematic diagram of the first main body structure of this utility model.

[0022] Labeling Explanation: 1. First steel fiber reinforced concrete pavement main body; 2. Second steel fiber reinforced concrete pavement main body; 3. First connecting piece; 4. Second connecting piece; 5. Corrugated pipe; 6. Concrete protective layer; 7. Precast steel fiber reinforced concrete slab; 8. Connecting hole; 9. Wear-resistant surface layer; 10. Steel fiber reinforced concrete layer; 11. Base layer. Detailed Implementation

[0023] To further understand the present invention, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments. It should be understood that the embodiments are merely illustrative and not intended to limit the scope of the invention.

[0024] To further illustrate the technical means and effects of this utility model in achieving its intended purpose, the specific implementation methods, structural features and effects of this utility model are described in detail below with reference to the accompanying drawings and embodiments.

[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", 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 are not intended to 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.

[0026] Combined with appendix Figures 1 to 5 As shown, the present invention provides a prefabricated steel fiber reinforced concrete pavement structure, comprising multiple steel fiber reinforced concrete pavement bodies spliced ​​sequentially. Taking two steel fiber reinforced concrete pavement bodies as an example, they are a first steel fiber reinforced concrete pavement body 1 and a second steel fiber reinforced concrete pavement body 2, which are spliced ​​along the long side direction; the steel fiber reinforced concrete pavement body is prefabricated from a steel fiber reinforced concrete layer 10.

[0027] like Figure 1As shown, both the left end of the long side of the first steel fiber reinforced concrete pavement body 1 and the second steel fiber reinforced concrete pavement body 2 are provided with a first connecting piece 3, and both the right end of the long side of the first steel fiber reinforced concrete pavement body 1 and the second steel fiber reinforced concrete pavement body 2 are provided with a second connecting piece 4. The first connecting piece 3 and the second connecting piece 4 extend along the length of the pavement body. The steel fiber reinforced concrete pavement body has a rectangular structure, facilitating factory prefabrication and pavement construction. The first connecting piece 3 and the second connecting piece 4 (identical to the first connecting piece 3) are respectively provided on opposite sides of the steel fiber reinforced concrete pavement body, making it easier to place adjacent steel fiber reinforced concrete pavement bodies and facilitating alignment and splicing during pavement assembly. The second connecting piece 4 of the first steel fiber reinforced concrete pavement body 1 and the first connecting piece 3 of the second steel fiber reinforced concrete pavement body 2 are connected and spliced ​​and fixed by a channel connecting module. Several vertically penetrating corrugated pipes 5 are evenly arranged longitudinally on the first connecting piece 3 and the second connecting piece 4, spaced apart along the length of the connecting piece. Each corrugated pipe 5 is wrapped with a steel fiber reinforced concrete protective layer 6, which is integrally formed with the connecting piece body and the corrugated pipe 5. Figure 2 As shown, the connecting module includes a precast steel fiber concrete slab 7. Connecting blocks 12 are fixedly installed at both ends of the precast steel fiber concrete slab 7. The connecting blocks 12 have vertically penetrating longitudinal connecting holes 8. The number of connecting holes 8 is the same as that of the corrugated pipes 5 and they correspond one-to-one. The corrugated pipes 5 and the steel fiber concrete protective layer 6 are embedded in the connecting holes 8 and fixed, so that the first steel fiber concrete pavement body 1 and the second steel fiber concrete pavement body 2 can be spliced ​​together through the connecting module during assembly.

[0028] To ensure stable splicing, multiple corrugated pipes 5 are reserved. Taking six corrugated pipes 5 for each joint as an example, the number of corresponding docking holes 8 on the connecting block 12 is six per column, for a total of 12 columns. The six corrugated pipes 5 are evenly spaced along the length of the first joint 3 and the second joint 4, and the corresponding docking holes 8 are also evenly spaced along the length of the connecting block 12. The corrugated pipes 5 and the docking holes 8 are set one-to-one, which facilitates construction.

[0029] To further ensure the stability of the steel fiber reinforced concrete pavement structure, the diameter of the butt joint hole 8 on the connecting block 12 is larger than the diameter of the integrated structure of the corrugated pipe 5 and the steel fiber reinforced concrete protective layer 6. This facilitates construction during pavement assembly and installation. After paving, high-strength concrete is used to fill the gaps, connecting the module to the main structure, thereby improving the assembly reliability of adjacent steel fiber reinforced concrete pavement structures. To avoid the top of the corrugated pipe 5 being exposed and affecting pedestrians and vehicles, the height of the corrugated pipe 5 is less than the thickness of the steel fiber reinforced concrete pavement structure, and it is leveled with high-strength concrete after assembly.

[0030] The main body of the steel fiber reinforced concrete pavement also includes a base course 11, which is located below the steel fiber reinforced concrete layer 10. A wear-resistant surface layer 9 is provided on top of the steel fiber reinforced concrete layer 10, and the wear-resistant surface layer 9 is made of anti-slip imitation stone particles to improve wear resistance and anti-slip performance.

[0031] The above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of this utility model without departing from the spirit and scope of this utility model. Any modifications or equivalent substitutions should be covered within the protection scope of the claims of this utility model.

Claims

1. A prefabricated steel fiber reinforced concrete pavement structure, characterized in that, It includes multiple steel fiber reinforced concrete pavement bodies that are spliced ​​together in sequence. The steel fiber reinforced concrete pavement bodies are rectangular structures. One end of the long side of the steel fiber reinforced concrete pavement body is provided with a first connecting piece (3), and the other end of the long side of the steel fiber reinforced concrete pavement body is provided with a second connecting piece (4) that is the same as the first connecting piece (3). The first connecting piece (3) and the second connecting piece (4) are both arranged along the length direction of the steel fiber reinforced concrete pavement body. The steel fiber reinforced concrete pavement bodies are spliced ​​together by connecting modules, and the connecting modules include precast steel fiber reinforced concrete slabs (7).

2. The prefabricated steel fiber reinforced concrete pavement structure according to claim 1, characterized in that, The first docking member (3) and the second docking member (4) are evenly provided with a number of corrugated pipes (5).

3. The prefabricated steel fiber reinforced concrete pavement structure according to claim 2, characterized in that, The height of the corrugated pipe (5) is less than the thickness of the main body of the steel fiber concrete pavement.

4. The prefabricated steel fiber reinforced concrete pavement structure according to claim 2, characterized in that, The corrugated pipe (5) is surrounded by a steel fiber reinforced concrete protective layer (6), and the corrugated pipe (5) and the steel fiber reinforced concrete protective layer (6) are matched and fixed with the connecting module.

5. The prefabricated steel fiber reinforced concrete pavement structure according to claim 4, characterized in that, In the connection module, the precast steel fiber concrete slab (7) is fixed with connecting blocks (12) at both ends.

6. The prefabricated steel fiber reinforced concrete pavement structure according to claim 5, characterized in that, The connecting block (12) is uniformly provided with vertically penetrating docking holes (8), and the corrugated pipe (5) and steel fiber concrete protective layer (6) are matched and fixed with the docking holes (8).

7. A prefabricated steel fiber reinforced concrete pavement structure according to claim 6, characterized in that, The number of bellows (5) is the same as the number of docking holes (8) on the connecting module, and they correspond one-to-one.

8. The prefabricated steel fiber reinforced concrete pavement structure according to claim 1, characterized in that, The main body of the steel fiber concrete pavement includes a base layer (11), a steel fiber concrete layer (10), and a wear-resistant surface layer (9) arranged sequentially from bottom to top.

9. A prefabricated steel fiber reinforced concrete pavement structure according to claim 8, characterized in that, The wear-resistant surface layer (9) is made of anti-slip imitation stone particles.

10. A prefabricated steel fiber reinforced concrete pavement structure according to claim 1, characterized in that, One end of the connecting module is connected to the first docking piece (3) of a steel fiber reinforced concrete pavement body, and the other end of the connecting module is connected to the second docking piece (4) of the steel fiber reinforced concrete pavement body.

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