Composite fiber reinforced cover plate for expressway
By setting up a disassembled reinforcement frame and covering fiber mesh inside the highway cover plate, the problem of insufficient mechanical properties of the existing highway cover plate is solved, and higher strength and corrosion resistance are achieved while reducing weight.
Patent Information
- Application Number
- CN202421694386.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-17
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-07-17
AI Technical Summary
The existing highway cover plates are under the influence of external forces such as high temperature, high humidity and vehicle rolling, and are prone to deformation and cracking.
The composite fiber reinforced cover plate design is adopted. By setting up an upper reinforcement frame, a cable-stayed reinforcement frame and a lower reinforcement frame in sequence inside the concrete cover plate from top to bottom, a disassembled support reinforcement structure is formed, and the fiber web is covered on the sides of the reinforcement frame to improve strength and corrosion resistance.
It significantly improves the mechanical properties and strength of the cover plate, while reducing the weight of the cover plate, enhancing impact and corrosion resistance, and extending service life.
Smart Images
Figure CN222822345U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of road and bridge concrete cover plates, and relates to a composite fiber reinforced cover plate for expressways. Background Art
[0002] In highway projects, in order to cover the grooves and protect the cables, the cover plates are usually fastened on the top of the highway facilities such as drainage ditches and lower pipeline troughs. Since the highway cover plates are affected by external forces and the external environment during use, such as the cover plates being exposed to high temperature and high humidity for a long time, or the cover plates being crushed by vehicles, the mechanical properties of the cover plates are particularly important.
[0003] Existing highway cover plates usually have prefabricated steel mesh inside concrete, which makes them very heavy. In addition, the steel bars inside the concrete are prone to rust in a humid environment, and the strength of the entire cover plate reinforced only by the steel mesh inside the concrete is limited, causing the cover plate to deform and crack after long-term use.
[0004] Therefore, the utility model aims at the above-mentioned technical problems existing in the existing highway cover plates, and discloses a composite fiber reinforced cover plate for highways. Utility Model Content
[0005] The purpose of the utility model is to provide a composite fiber reinforced cover plate for highways, which improves the reinforcing rib structure inside the cover plate and simultaneously covers the outer side of the steel bars inside the concrete with fiber material, thereby ensuring the mechanical properties and strength of the cover plate and reducing the weight of the cover plate to a certain extent.
[0006] The utility model is realized by the following technical solutions:
[0007] A composite fiber reinforced cover plate for highways comprises a concrete cover plate body, wherein an upper reinforcing frame and a lower reinforcing frame are symmetrically arranged inside the concrete cover plate body along the up-down direction, and an obliquely-stretched reinforcing frame is obliquely arranged between the upper reinforcing frame and the lower reinforcing frame; the internal areas of the upper reinforcing frame, the lower reinforcing frame and the obliquely-stretched reinforcing frame are all in a grid structure, and a fiber mesh is fixed on the upper side or the lower side or both upper and lower sides of the upper reinforcing frame, the lower reinforcing frame and the obliquely-stretched reinforcing frame.
[0008] First, pour the lower layer of concrete in the cover casting mold, and embed the lower layer reinforcement frame in the lower layer concrete, lay the fiber mesh and fix it. Then, after connecting the bottom of the inclined reinforcement frame with one side of the lower reinforcement frame, lay the fiber mesh on the inclined reinforcement frame and fix it, and then continue to pour concrete to the upper elevation line. Then, connect the upper reinforcement frame with the top of the inclined reinforcement frame, and then lay the fiber mesh on the upper reinforcement frame and fix it, and finally completely cast the concrete cover body.
[0009] The lower layer of concrete is supported and reinforced by the lower layer reinforcement frame, the upper layer of concrete is supported and reinforced by the upper layer reinforcement frame, and the upper layer reinforcement frame and the lower layer reinforcement frame are fixedly connected by the diagonal reinforcement frame. The concrete in the middle position is supported and reinforced by the diagonal reinforcement frame, thereby forming a stable support and reinforcement structure inside the concrete cover plate body to ensure the mechanical properties and strength of the concrete cover plate body. At the same time, a fiber mesh is also provided on one side of the reinforcement frame. The fiber mesh replaces part of the reinforcing steel bars, which can reduce the weight of the concrete cover plate body while ensuring the strength of the concrete cover plate body. The fiber mesh provided on the upper and lower layers can not only improve the strength of the upper and lower layers of concrete of the concrete cover plate body, but also have certain corrosion resistance and impact resistance.
[0010] In order to better realize the utility model, further, the upper reinforcement frame includes an upper rectangular outer frame and upper reinforcement ribs. The upper rectangular outer frame is embedded on the inner side of the top of the concrete cover plate body. The interior of the upper rectangular outer frame is staggered with upper reinforcement ribs to form a grid structure. The outer covering of the upper reinforcement ribs is provided with organic fiber bundles or inorganic fiber bundles.
[0011] In order to better realize the utility model, further, the upper reinforcing bar includes steel bars, and the outside of the steel bars is wrapped with steel fiber bundles or basalt fiber bundles or polypropylene fiber bundles.
[0012] In order to better realize the utility model, further, the lower reinforcement frame includes a lower rectangular outer frame and a lower reinforcement rib. The lower rectangular outer frame is embedded on the inner side of the bottom of the concrete cover plate body. The interior of the lower rectangular outer frame is staggered with lower reinforcement ribs to form a grid structure. The outer part of the lower reinforcement rib is covered with organic fiber bundles or inorganic fiber bundles.
[0013] In order to better realize the utility model, further, the lower layer reinforcement bar includes steel bars, and the outside of the steel bars is wrapped with steel fiber bundles or basalt fiber bundles or polypropylene fiber bundles.
[0014] In order to better realize the utility model, further, the diagonal reinforcement frame includes a diagonal frame and diagonal reinforcement ribs. The diagonal frame is obliquely arranged between the upper reinforcement frame and the lower reinforcement frame. The interior of the diagonal frame is staggered with diagonal reinforcement ribs to form a grid structure. The outside of the diagonal reinforcement ribs is covered with organic fiber bundles or inorganic fiber bundles.
[0015] In order to better realize the utility model, further, the oblique-tensioned reinforcement bar includes a steel bar, and the outside of the steel bar is wrapped with a steel fiber bundle or a basalt fiber bundle or a polypropylene fiber bundle.
[0016] In order to better realize the utility model, further, the thickness of the concrete cover plate body is 2cm-2.5cm.
[0017] In order to better realize the utility model, further, the fiber mesh is any one of a copper-plated steel fiber mesh, a polypropylene fiber mesh, and a basalt fiber mesh.
[0018] Compared with the prior art, the utility model has the following advantages and beneficial effects:
[0019] (1) The utility model arranges an upper reinforcement frame, a diagonal reinforcement frame, and a lower reinforcement frame in order from top to bottom inside the concrete cover plate body, thereby achieving staggered support reinforcement of the concrete cover plate body, thereby further improving the strength and mechanical properties of the concrete cover plate;
[0020] (2) The utility model reinforces the frame by covering one side with a fiber mesh, and at the same time, the fiber mesh can improve the impact resistance and corrosion resistance of the concrete cover plate body;
[0021] (3) The utility model wraps the outside of the steel bars inside the concrete cover plate body with organic fiber bundles or inorganic fiber bundles, thereby reinforcing the steel bars and improving the corrosion resistance of the steel bars. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 This is a schematic diagram of the overall structure of a composite fiber reinforced cover for a highway;
[0023] Figure 2 A schematic diagram of the connection to strengthen the frame;
[0024] Figure 3 Schematic diagram of the explosion structure to strengthen the frame;
[0025] Figure 4 This is a schematic diagram of the structure of the upper reinforcement frame;
[0026] Figure 5 This is a schematic diagram of the structure of the lower reinforcement frame;
[0027] Figure 6 This is a structural diagram of the cable-stayed reinforced frame.
[0028] Among them: 1-concrete cover plate body; 2-upper reinforcement frame; 3-lower reinforcement frame; 4-diagonal reinforcement frame; 5-fiber mesh; 21-upper rectangular outer frame; 22-upper reinforcement ribs; 31-lower rectangular outer frame; 32-lower reinforcement ribs; 41-diagonal frame; 42-diagonal reinforcement ribs. DETAILED DESCRIPTION
[0029] The following detailed descriptions are all illustrative and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.
[0030] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the utility model explicitly states otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.
[0031] For the convenience of description, if the words "up", "down", "left" and "right" appear in the present invention, they only indicate that they are consistent with the up, down, left and right directions of the drawings themselves, and do not limit the structure. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.
[0032] Terminology explanation section: The terms "install", "connect", "connect", "fixed" and so on in the present utility model should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements, or an interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.
[0033] Embodiment 1:
[0034] A composite fiber reinforced cover plate for a highway according to the present embodiment comprises a concrete cover plate body 1, wherein an upper reinforcing frame 2 and a lower reinforcing frame 3 are symmetrically arranged inside the concrete cover plate body 1 along the up-down direction, and a diagonal reinforcing frame 4 is diagonally arranged between the upper reinforcing frame 2 and the lower reinforcing frame 3; the internal areas of the upper reinforcing frame 2, the lower reinforcing frame 3 and the diagonal reinforcing frame 4 are all in a grid structure, and a fiber mesh 5 is fixed on the upper side or the lower side or both upper and lower sides of the upper reinforcing frame 2, the lower reinforcing frame 3 and the diagonal reinforcing frame 4.
[0035] The upper reinforcement frame 2, the lower reinforcement frame 3, and the diagonal reinforcement frame 4 are made of carbon steel materials. First, the lower concrete is poured inside the concrete cover plate mold, and the fiber mesh 5 is laid on the upper side or the lower side or the upper and lower sides of the lower reinforcement frame 3, and the fiber mesh 5 is tied and fixed on the lower reinforcement frame 3 by steel wire or the fiber mesh 5 is hung on the clamping part of the lower reinforcement frame 3. Then, the lower reinforcement frame 3 is prefabricated inside the lower concrete, and the bottom of the diagonal reinforcement frame 4 with the fiber mesh 5 laid is tied or welded to one side of the top of the lower reinforcement frame 3, and then concrete is poured to the upper elevation, and then the upper reinforcement frame 2 with the fiber mesh 5 laid is tied or welded to the top of the diagonal reinforcement frame 4, and finally the concrete is completely poured to obtain the concrete cover plate body 1. The grid structure inside the upper reinforcement frame 2, the lower reinforcement frame 3, and the diagonal reinforcement frame 4 helps the concrete to pass through and facilitates the fixation of the fiber mesh 5.
[0036] Embodiment 2:
[0037] A composite fiber reinforced cover plate for highways is improved on the basis of Example 1, wherein the upper reinforcement frame 2 includes an upper rectangular outer frame 21 and upper reinforcing ribs 22, wherein the upper rectangular outer frame 21 is embedded inside the top of the concrete cover plate body 1, and the upper reinforcing ribs 22 are staggered inside the upper rectangular outer frame 21 to form a grid structure, and the outer part of the upper reinforcing ribs 22 is covered with organic fiber bundles or inorganic fiber bundles.
[0038] The upper rectangular outer frame 21 is a rectangular frame structure formed by welding carbon steel plates, and upper reinforcing ribs 22 are welded in an interlaced manner along the length and width directions of the concrete cover plate body 1 inside the upper rectangular outer frame 21, thereby forming an interlaced grid structure inside the upper rectangular outer frame 21. The outer portion of the upper reinforcing ribs 22 is coated with an organic fiber bundle or an inorganic fiber bundle to form a reinforcing protective layer, which further improves the strength of the upper reinforcing ribs 22 and improves the corrosion resistance of the upper reinforcing ribs 22.
[0039] Furthermore, the upper reinforcing rib 22 includes a steel bar, and the outside of the steel bar is wrapped with a steel fiber bundle, a basalt fiber bundle, or a polypropylene fiber bundle. The steel bar is a threaded steel bar with a diameter of 6 mm to 10 mm, and the outside of the threaded steel bar is coated with any one of a steel fiber bundle, a basalt fiber bundle, and a polypropylene fiber bundle, thereby forming a reinforcement structure outside the threaded steel bar and improving the corrosion resistance of the threaded steel bar.
[0040] The other parts of this embodiment are the same as those of Embodiment 1, and thus will not be described in detail.
[0041] Embodiment 3:
[0042] A composite fiber reinforced cover plate for highways is improved on the basis of Example 1 or 2, wherein the lower reinforcing frame 3 includes a lower rectangular outer frame 31 and lower reinforcing ribs 32, wherein the lower rectangular outer frame 31 is embedded inside the bottom of the concrete cover plate body 1, and the lower reinforcing ribs 32 are staggered inside the lower rectangular outer frame 31 to form a grid structure, and the outer part of the lower reinforcing ribs 32 is covered with organic fiber bundles or inorganic fiber bundles.
[0043] The lower rectangular outer frame 31 is a rectangular frame structure formed by welding carbon steel plates, and lower reinforcing ribs 32 are welded staggered along the length and width directions of the concrete cover plate body 1 inside the lower rectangular outer frame 31, thereby forming a staggered grid structure inside the lower rectangular outer frame 31. The outer part of the lower reinforcing ribs 32 is coated with organic fiber bundles or inorganic fiber bundles to form a reinforcing protective layer, which further improves the strength of the lower reinforcing ribs 32 and improves the corrosion resistance of the lower reinforcing ribs 32.
[0044] Furthermore, the lower reinforcing rib 32 includes a steel bar, and the outside of the steel bar is wrapped with a steel fiber bundle, a basalt fiber bundle, or a polypropylene fiber bundle. The steel bar is a threaded steel bar with a diameter of 6 mm to 10 mm, and the outside of the threaded steel bar is coated with any one of a steel fiber bundle, a basalt fiber bundle, and a polypropylene fiber bundle, thereby forming a reinforcement structure outside the threaded steel bar and improving the corrosion resistance of the threaded steel bar.
[0045] The other parts of this embodiment are the same as those of Embodiment 1 or 2, and thus will not be described in detail.
[0046] Embodiment 4:
[0047] A composite fiber reinforced cover plate for a highway is improved on the basis of any one of embodiments 1-3, wherein the diagonal reinforcement frame 4 includes a diagonal frame 41 and diagonal reinforcement ribs 42, wherein the diagonal frame 41 is obliquely arranged between an upper reinforcement frame 2 and a lower reinforcement frame 3, and the interior of the diagonal frame 41 is staggered with diagonal reinforcement ribs 42 to form a grid structure, and the exterior of the diagonal reinforcement ribs 42 is covered with organic fiber bundles or inorganic fiber bundles.
[0048] The diagonal frame 41 is a rectangular frame structure formed by welding carbon steel plates. Inside the diagonal frame 41, diagonal reinforcement ribs 42 are staggeredly welded along the length direction and the width direction of the concrete cover plate body 1, thereby forming a staggered grid structure inside the diagonal frame 41. The outside of the diagonal reinforcement ribs 42 is coated with organic fiber bundles or inorganic fiber bundles to form a reinforcement protective layer, which further improves the strength of the diagonal reinforcement ribs 42 and improves the corrosion resistance of the diagonal reinforcement ribs 42.
[0049] Furthermore, the inclined reinforcement rib 42 includes a steel bar, and the outside of the steel bar is wrapped with a steel fiber bundle, a basalt fiber bundle, or a polypropylene fiber bundle. The steel bar is a threaded steel bar with a diameter of 6 mm to 8 mm, and the outside of the threaded steel bar is coated with any one of a steel fiber bundle, a basalt fiber bundle, and a polypropylene fiber bundle, thereby forming a reinforcement structure outside the threaded steel bar and improving the corrosion resistance of the threaded steel bar.
[0050] The other parts of this embodiment are the same as any one of Embodiments 1-3, so they are not described again.
[0051] Embodiment 5:
[0052] A composite fiber reinforced cover plate for highways is improved on the basis of any one of embodiments 1-4, wherein the thickness of the concrete cover plate body 1 is 2cm-2.5cm; and the fiber mesh 5 is any one of a copper-plated steel fiber mesh, a polypropylene fiber mesh, and a basalt fiber mesh.
[0053] The length of the concrete cover plate body 1 is 73 cm or 78 cm, the width is 49 cm, and the thickness is preferably 2 cm, which is thinner than the traditional concrete cover plate, thereby reducing the weight. At the same time, the layered reinforcement frame and the fiber mesh 5 inside the concrete cover plate body 1 constitute a supporting reinforcement structure, which can ensure the mechanical properties, strength, corrosion resistance, and impact resistance of the concrete cover plate body 1.
[0054] The other parts of this embodiment are the same as any one of Embodiments 1-4, so they will not be repeated here.
[0055] The above are only preferred embodiments of the present invention and are not intended to limit the present invention in any form. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present invention fall within the protection scope of the present invention.
Claims
1. A composite fiber reinforced cover plate for a highway, comprising a concrete cover plate body (1), characterized in that: An upper reinforcement frame (2) and a lower reinforcement frame (3) are symmetrically arranged inside the concrete cover plate body (1) in the up-down direction, and an oblique reinforcement frame (4) is obliquely arranged between the upper reinforcement frame (2) and the lower reinforcement frame (3); the internal areas of the upper reinforcement frame (2), the lower reinforcement frame (3) and the oblique reinforcement frame (4) are all in a grid structure, and a fiber mesh (5) is fixed on the upper side or the lower side or both upper and lower sides of the upper reinforcement frame (2), the lower reinforcement frame (3) and the oblique reinforcement frame (4).
2. A composite fiber reinforced cover plate for highway according to claim 1, characterized in that: The upper layer reinforcement frame (2) comprises an upper layer rectangular outer frame (21) and upper layer reinforcement ribs (22); the upper layer rectangular outer frame (21) is pre-embedded on the inner side of the top of the concrete cover plate body (1); the upper layer reinforcement ribs (22) are staggeredly arranged inside the upper layer rectangular outer frame (21) to form a grid structure; the outer part of the upper layer reinforcement ribs (22) is covered with organic fiber bundles or inorganic fiber bundles.
3. A composite fiber reinforced cover plate for highway according to claim 2, characterized in that: The upper reinforcing ribs (22) include steel bars, the exterior of which is wrapped with steel fiber bundles, basalt fiber bundles, or polypropylene fiber bundles.
4. The composite fiber reinforced cover plate for highway according to claim 1, characterized in that: The lower layer reinforcement frame (3) comprises a lower layer rectangular outer frame (31) and lower layer reinforcement ribs (32); the lower layer rectangular outer frame (31) is pre-embedded on the inner side of the bottom of the concrete cover plate body (1); lower layer reinforcement ribs (32) are staggeredly arranged inside the lower layer rectangular outer frame (31) to form a grid structure; and the outer part of the lower layer reinforcement ribs (32) is covered with organic fiber bundles or inorganic fiber bundles.
5. A composite fiber reinforced cover plate for highway according to claim 4, characterized in that: The lower layer reinforcement bar (32) comprises a steel bar, the exterior of which is wrapped with a steel fiber bundle or a basalt fiber bundle or a polypropylene fiber bundle.
6. The composite fiber reinforced cover plate for highway according to claim 1, characterized in that: The diagonal reinforcement frame (4) comprises a diagonal frame (41) and diagonal reinforcement ribs (42); the diagonal frame (41) is obliquely arranged between an upper reinforcement frame (2) and a lower reinforcement frame (3); the interior of the diagonal frame (41) is staggered with diagonal reinforcement ribs (42) to form a grid structure; the exterior of the diagonal reinforcement ribs (42) is covered with organic fiber bundles or inorganic fiber bundles.
7. A composite fiber reinforced cover plate for highway according to claim 6, characterized in that: The obliquely-tensioned reinforcing bar (42) comprises a steel bar, the exterior of which is wrapped with a steel fiber bundle or a basalt fiber bundle or a polypropylene fiber bundle.
8. A composite fiber reinforced cover plate for a highway according to any one of claims 1 to 7, characterized in that: The thickness of the concrete cover plate body (1) is 2 cm-2.5 cm.
9. A composite fiber reinforced cover plate for a highway according to any one of claims 1 to 7, characterized in that: The fiber mesh (5) is any one of a copper-plated steel fiber mesh, a polypropylene fiber mesh, and a basalt fiber mesh.