Cement stabilized macadam layer structure

Abstract

This application discloses a cement-stabilized crushed stone layer structure, belonging to the technical field of crushed stone layers. The cement-stabilized crushed stone layer structure includes a grid frame, the interior of which is equipped with a filling skeleton assembly. The filling skeleton assembly includes multiple interconnected composite plates, with adjacent composite plates forming a honeycomb structure. The inner wall of the grid frame is fixedly connected to the adjacent composite plates. A through-hole is provided at the center of each composite plate. The honeycomb composite plates within the grid frame decompose the shear force under horizontal load into axial pressure, fully utilizing the compressive strength of concrete, effectively resisting pavement deformation, improving structural bearing capacity, and extending pavement service life. The honeycomb structure restricts the dispersion of crushed stone, facilitating compaction and shaping after cement pouring. The burr membrane within the anti-scattering holes forms a mechanical bond with the cement, enhancing the bond strength between the cement and the composite plates, ensuring tight fusion and improving the overall integrity of the pavement structure.

Description

Technical Field

[0001] This application relates to the field of crushed stone layer technology, and more specifically, to a cement-stabilized crushed stone layer structure. Background Technology

[0002] Cement-stabilized crushed stone layer structure is a road base structure formed by using graded crushed stone as aggregate, filling the aggregate voids with a certain amount of cementitious material and sufficient mortar volume, and then mixing, compacting, and curing. It has high strength, stability, and frost resistance, effectively distributing road loads and reducing subgrade deformation, and is a commonly used load-bearing layer in road engineering.

[0003] In actual engineering projects, traditional crushed stone layers cannot fully utilize the compressive strength of concrete and are prone to road surface deformation due to shear force; at the same time, the lack of dedicated pipeline channels leads to pipelines crossing and tangling during construction, which not only increases the difficulty of laying but also brings inconvenience to later maintenance.

[0004] In view of this, this application proposes a cement-stabilized crushed stone layer structure. Utility Model Content

[0005] The purpose of this application is to provide a cement-stabilized crushed stone layer structure that solves the technical problems mentioned in the background art.

[0006] This application provides a cement-stabilized crushed stone layer structure, including a grid frame, the inside of which is provided with a filling skeleton component;

[0007] The filling skeleton assembly includes multiple interconnected combination plates, and multiple adjacent combination plates are interconnected in a honeycomb pattern. The inner wall of the grid frame is fixedly connected to the adjacent combination plates, and a through hole is provided at the center of the interior of each combination plate.

[0008] Optionally, a retaining ring is fixedly connected to the inner wall of the thread hole.

[0009] Optionally, upper protruding strips are fixedly connected to the upper sides of both sides of the outer wall of the combined plate, and lower protruding strips are fixedly connected to the lower sides of both sides of the outer wall of the combined plate, with both upper and lower protruding strips being inclined.

[0010] Optionally, the outer wall of the composite plate is provided with a plurality of through anti-spreading holes, and the inner wall of the anti-spreading holes is fixedly connected with a burr membrane.

[0011] Optionally, multiple connecting holes are provided around the outer wall of the grid frame, and the connecting holes correspond to the wire holes.

[0012] Optionally, a pair of mounting holes are provided on both sides of the outer wall of the grid frame.

[0013] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0014] This application uses a honeycomb composite panel assembly within a grid frame to decompose the shear force under horizontal load into axial pressure, fully utilizing the compressive strength of concrete, effectively resisting pavement deformation, improving structural bearing capacity, and extending pavement service life. The honeycomb structure restricts the scattering of aggregate, facilitating compaction and shaping after cement pouring. The burr membrane inside the anti-scattering pores forms a mechanical bond with the cement, enhancing the bond strength between the cement and the composite panel, making the two tightly integrated, and improving the overall integrity of the pavement structure.

[0015] The design of connecting holes, wire-passing holes, and fixing rings provides a dedicated channel for cable laying. The honeycomb holes separate multiple pipelines, avoiding cross-entanglement and achieving orderly pipeline layout. This facilitates precise laying by construction personnel and also makes it easier for later inspection and maintenance.

[0016] The lower convex strip at the bottom of the composite panel is inserted into the top surface of the base layer to increase interlayer friction, enhance shear resistance, and prevent slippage between pavement structure layers; the upper convex strip at the top is embedded in the asphalt concrete to form a mechanical anchor, which makes the asphalt surface layer and the base layer tightly bonded and improves the overall firmness of the pavement. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the cement-stabilized crushed stone layer structure disclosed in the embodiments of this application;

[0018] Figure 2 This is a schematic diagram of the structure of the cement-stabilized crushed stone layer filling skeleton component disclosed in the embodiments of this application;

[0019] Figure 3 This is a cross-sectional view of the cement-stabilized crushed stone layer composite slab disclosed in the embodiments of this application;

[0020] The following are the labels in the diagram: 1. Grid frame; 2. Connecting hole; 3. Filler skeleton assembly; 4. Mounting hole; 301. Combination plate; 302. Upper protrusion; 303. Threading hole; 304. Fixing ring; 305. Anti-scattering hole; 306. Burr membrane; 307. Lower protrusion. Detailed Implementation

[0021] The present application will be further described in detail below with reference to the accompanying drawings.

[0022] Reference Figures 1-3This application provides a cement-stabilized crushed stone layer structure, including a grid frame 1. A pair of mounting holes 4 are provided on both sides of the outer wall of the grid frame 1. The grid frame 1 contains a filling skeleton assembly 3, which includes multiple interconnected composite plates 301. Multiple adjacent composite plates 301 are interconnected in a honeycomb pattern, and the inner wall of the grid frame 1 is fixedly connected to adjacent composite plates 301. The honeycomb composite plates 301 within the grid frame 1 decompose the shear force under horizontal load into axial pressure, fully utilizing the compressive strength of concrete, effectively resisting road deformation, improving structural bearing capacity, and extending the service life of the road surface. The honeycomb structure restricts the dispersion of crushed stone, facilitating compaction and shaping after cement pouring.

[0023] A wire-passing hole 303 is provided through the center of the composite panel 301. A fixing ring 304 is fixedly connected to the inner wall of the wire-passing hole 303. Multiple connecting holes 2 are provided through the perimeter of the outer wall of the grid frame 1, and the connecting holes 2 correspond to the wire-passing hole 303. The design of the connecting holes 2, the wire-passing hole 303 and the fixing ring 304 provides a dedicated channel for cable laying. The honeycomb holes separate multiple pipelines, avoiding cross-entanglement, realizing orderly pipeline layout, facilitating accurate laying by construction personnel, and also facilitating later inspection and maintenance.

[0024] Upper protruding strips 302 are fixedly connected to the upper sides of both sides of the outer wall of the composite plate 301, and lower protruding strips 307 are fixedly connected to the lower sides of both sides of the outer wall of the composite plate 301. Both the upper protruding strips 302 and the lower protruding strips 307 are inclined. The lower protruding strip 307 at the lower end of the composite plate 301 is inserted into the top surface of the base layer to increase the interlayer friction, enhance the shear resistance, and prevent the interlayer slippage of the pavement structure. The upper protruding strip 302 at the upper end is embedded in the asphalt concrete to form a mechanical anchor, so that the asphalt surface layer is tightly bonded to the base layer and the overall firmness of the pavement is improved.

[0025] The outer wall of the composite panel 301 has multiple through anti-spill holes 305. The inner wall of the anti-spill holes 305 is fixedly connected with a burr membrane 306. The burr membrane 306 in the anti-spill holes 305 forms a mechanical interlock with the cement, which enhances the bonding strength between the cement and the composite panel 301, so that the two are tightly integrated and improve the overall integrity of the road structure.

[0026] Working principle: After the foundation is laid, multiple grid frames 1 are placed on the foundation and combined together. The grid frames 1 are fixed to each other through bolt mounting holes 4. Multiple interconnected composite plates 301 inside the grid frames 1 form a honeycomb structure. During later use after paving, under horizontal loads, the honeycomb array formed by the composite plates 301 can decompose shear force into axial pressure, utilizing the compressive strength of concrete to resist deformation. After multiple grid frames 1 are combined, the lower protrusions 307 on both sides of the lower end of the composite plate 301 are inserted into the top surface of the base layer to enhance interlayer shear resistance. When laying cables, the cables can be passed through the connecting holes 2 on the grid frames 1 and then through the fixing rings 304 of the wire holes 303 on the composite plate 301. When multiple pipelines run in parallel, they are arranged according to different honeycomb holes to avoid cross-entanglement and facilitate precise laying. Crushed stone is poured into the honeycomb array; the crushed stone does not easily scatter, making it easy to flatten and shape after cement injection. After the cement is poured, the cement enters the anti-spill holes 305 of the composite board 301. The burr membrane 306 inside the anti-spill holes 305 can enhance the mechanical interlocking with the cement, so that the cement can be more firmly integrated with the composite board 301. After the paving is completed, when the upper asphalt surface layer is constructed, the upper protrusion strip 302 at the upper end of the composite board 301 is embedded in the asphalt concrete to form a mechanical anchor and improve the firmness of the road surface.

[0027] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A cement-stabilized crushed stone layer structure, comprising a grid frame (1), characterized in that: The grid frame (1) is provided with a filling skeleton component (3) inside; The filling skeleton assembly (3) includes multiple interconnected combination plates (301), and multiple adjacent combination plates (301) are interconnected in a honeycomb shape. The inner wall of the grid frame (1) is fixedly connected to the adjacent combination plates (301), and a through hole (303) is provided in the center of the interior of the combination plate (301).

2. The cement-stabilized crushed stone layer structure according to claim 1, characterized in that: A retaining ring (304) is fixedly connected to the inner wall of the thread hole (303).

3. The cement-stabilized crushed stone layer structure according to claim 1, characterized in that: Upper protruding strips (302) are fixedly connected to the upper sides of the outer wall of the combined plate (301), and lower protruding strips (307) are fixedly connected to the lower sides of the outer wall of the combined plate (301). Both the upper protruding strips (302) and the lower protruding strips (307) are inclined.

4. The cement-stabilized crushed stone layer structure according to claim 1, characterized in that: The outer wall of the composite plate (301) is provided with a plurality of through anti-spreading holes (305), and the inner wall of the anti-spreading holes (305) is fixedly connected with a burr membrane (306).

5. The cement-stabilized crushed stone layer structure according to claim 1, characterized in that: The outer wall of the grid frame (1) has multiple through holes (2) around its perimeter, and the through holes (2) correspond to the wire holes (303).

6. The cement-stabilized crushed stone layer structure according to claim 1, characterized in that: The grid frame (1) has a pair of mounting holes (4) on both sides of its outer wall.

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