A fiber reinforced composite concrete protective sealing cover plate for underground comprehensive pipe gallery

Abstract

This utility model discloses a fiber-reinforced composite concrete protective and airtight cover for underground utility tunnels, relating to the technical field of underground utility tunnel cover plates. It includes a cover plate support with a groove on its upper surface. A concrete cover plate body is placed inside the groove. The concrete cover plate body includes a protective frame, multiple transverse support ribs, multiple longitudinal support ribs, a heat insulation layer, a composite concrete layer, and an electromagnetic shielding layer. Each transverse support rib is horizontally fixedly connected to the inside of the protective frame, and each longitudinal support rib is vertically fixedly connected to the inside of the protective frame. This utility model uses high-strength steel for the protective frame, combined with a crisscrossing steel reinforcement skeleton (transverse and longitudinal support ribs), and then welds it to form a rigid frame. This effectively disperses the load generated by vehicle traffic or pedestrian trampling, preventing stress concentration that could lead to concrete cracking.

Description

Technical Field

[0001] This utility model relates to the technical field of underground utility tunnel cover plates, specifically to a fiber-reinforced composite concrete protective and airtight cover plate for underground utility tunnels. Background Technology

[0002] Underground utility tunnels refer to structures and ancillary facilities located below the city surface to accommodate two or more types of public utility pipelines or professional pipelines. As a lifeline project for the city, their protective covers must simultaneously meet multiple requirements such as structural safety, waterproof sealing, and environmental adaptability.

[0003] The existing concrete protective sealing cover has weak concrete impact resistance. When vehicles drive under load, the cover is prone to cracking, which can cause rainwater to seep into the pipe gallery. If the crack is not detected and repaired in time, it may break and fall into the pipe gallery after being stepped on by pedestrians. At the same time, the cover lacks key protective functions such as electromagnetic shielding and explosion-proof pressure relief, and cannot meet the requirements of anti-interference or explosion-proof scenarios for communication cables. Utility Model Content

[0004] In view of the problems existing in the concrete cover plates of the underground integrated pipe gallery, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide a fiber-reinforced composite concrete protective and airtight cover for underground integrated utility tunnels, which solves the problem that the existing concrete protective and sealing cover has weak concrete impact resistance. When vehicles are under load, the cover is prone to cracking, which can cause rainwater to seep into the interior of the utility tunnel. If the crack is not detected and repaired in time, it may break and fall into the utility tunnel after being stepped on by pedestrians.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A fiber-reinforced composite concrete protective and airtight cover for underground utility tunnels includes a cover support. A groove is formed on the upper surface of the cover support, and a concrete cover body is placed inside the groove. The concrete cover body includes a protective frame, multiple transverse support ribs, multiple longitudinal support ribs, a heat insulation layer, a composite concrete layer, and an electromagnetic shielding layer. Each transverse support rib is transversely fixedly connected to the interior of the protective frame, and each longitudinal support rib is longitudinally fixedly connected to the interior of the protective frame. The heat insulation layer is fixedly connected to the lower surface of the interior of the protective frame. The composite concrete layer is disposed on the upper surface of the heat insulation layer and wraps around the outer surfaces of the transverse support ribs and each longitudinal support rib. The electromagnetic shielding layer is fixedly connected to the outer surface of the composite concrete layer.

[0008] Preferably, the protective frame is made of high-strength steel.

[0009] Preferably, each of the transverse support bars and each of the longitudinal support bars is a steel bar, and the two ends of each of the transverse support bars and each of the longitudinal support bars are fixedly connected to the inner wall of the protective frame by welding.

[0010] Preferably, the heat insulation layer is a ceramic plate.

[0011] Preferably, the composite concrete layer is a composite concrete slab.

[0012] Preferably, the electromagnetic shielding layer is a copper-plated steel plate.

[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0014] 1. This utility model uses high-strength steel for the protective frame, and combines it with a crisscrossing steel frame, namely horizontal support bars and longitudinal support bars, and then welds them together to form a rigid frame, which effectively disperses the load generated by vehicle rolling or pedestrian trampling, and avoids stress concentration that leads to concrete cracking.

[0015] 2. This utility model, by adding reinforcing materials such as steel fiber and basalt fiber to the composite concrete layer and combining it with vacuum vibration molding process, further improves the overall strength and impact resistance, prevents rainwater penetration and cover plate breakage and falling off, and ensures the structural safety of underground utility tunnels.

[0016] 3. This utility model uses ceramic plates for the heat insulation layer, which have a low thermal conductivity and can block the heat transfer between the inside and outside of the pipe gallery, maintaining the stability of the internal environment. It is suitable for temperature-sensitive pipelines. The electromagnetic shielding layer uses copper-plated steel plates, which can effectively reflect and absorb electromagnetic signals, prevent external interference and suppress internal electromagnetic leakage, meet the requirements of anti-interference and explosion-proof scenarios for communication cables, and improve the comprehensive protection performance of the pipe gallery. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 For the present utility model Figure 1 3D view of the middle cover plate support;

[0020] Figure 3 For the present utility model Figure 1 Exploded view of the concrete cover plate body.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Cover plate bracket; 2. Concrete cover plate body; 3. Protective frame; 4. Horizontal support bars; 5. Longitudinal support bars; 6. Heat insulation layer; 7. Composite concrete layer; 8. Electromagnetic shielding layer. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0024] This utility model discloses a fiber-reinforced composite concrete protective sealing cover for underground integrated pipe corridors.

[0025] This utility model provides, for example Figure 1-3 The fiber-reinforced composite concrete protective airtight cover for underground integrated pipe gallery shown includes a cover support 1. The upper surface of the cover support 1 has a groove, and a concrete cover body 2 is placed inside the groove. The concrete cover body 2 includes a protective frame 3, multiple transverse support ribs 4, multiple longitudinal support ribs 5, a heat insulation layer 6, a composite concrete layer 7, and an electromagnetic shielding layer 8. Each transverse support rib 4 is horizontally fixedly connected to the inside of the protective frame 3, and each longitudinal support rib 5 is vertically fixedly connected to the inside of the protective frame 3. The heat insulation layer 6 is fixedly connected to the lower surface of the inside of the protective frame 3. The composite concrete layer 7 is disposed on the upper surface of the heat insulation layer 6 and wraps around the outer surfaces of the transverse support ribs 4 and each longitudinal support rib 5. The electromagnetic shielding layer 8 is fixedly connected to the outer surface of the composite concrete layer 7.

[0026] The concrete cover plate body 2 is embedded in the groove of the cover plate bracket 1 to form a physical limit. The concrete cover plate body 2 can be moved up and down to facilitate the opening and closing of the cover plate.

[0027] To improve the strength of the cover plate, such as Figure 1-3 As shown, the protective frame 3 is made of high-strength steel, and each horizontal support rib 4 and each vertical support rib 5 is a steel bar. The two ends of each horizontal support rib 4 and each vertical support rib 5 are fixedly connected to the inner wall of the protective frame 3 by welding.

[0028] A rigid frame made of high-strength steel provides basic support for the cover plate. Transverse support bars 4 and longitudinal support bars 5 are welded to the protective frame 3, forming a crisscrossing steel reinforcement skeleton that enhances the overall rigidity and bending resistance of the cover plate. When vehicles drive over it or pedestrians step on it, the steel reinforcement skeleton distributes the load, preventing stress concentration that could lead to concrete cracking.

[0029] In order for the cover to have an insulating effect, such as Figure 3 As shown, the heat insulation layer 6 is a ceramic plate.

[0030] The insulation layer uses ceramic plates, whose low thermal conductivity can block heat transfer between the inside and outside of the underground utility tunnel, reducing the impact of external temperature changes on the environment inside the tunnel. It is especially suitable for temperature-sensitive pipeline scenarios.

[0031] In order to improve the strength of composite concrete layers, such as Figure 2-3 As shown, composite concrete layer 7 is a composite concrete slab.

[0032] When making composite concrete slabs, steel fibers and basalt fibers are first dry-mixed for 3 minutes, then polypropylene fibers and nano-carbon fibers are added and wet-mixed for 5 minutes. Subsequently, a vacuum vibration molding process is used to vibrate the slabs to make them denser, thereby improving the overall strength of the composite concrete layer 7.

[0033] In order for the cover plate to have an electromagnetic shielding effect, such as Figure 1-2 As shown, electromagnetic shielding layer 8 is a copper-plated steel plate.

[0034] Copper-plated steel plates reflect and absorb electromagnetic signals, preventing external electromagnetic interference, such as that from high-voltage cables and communication equipment, from affecting communication cables within the utility tunnel, thus ensuring stable signal transmission. Simultaneously, the electromagnetic shielding layer 8 suppresses the leakage of electromagnetic fields generated by equipment within the utility tunnel, meeting explosion-proof and anti-interference requirements.

[0035] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A fiber-reinforced composite concrete protective airtight cover for underground integrated pipe gallery, comprising a cover support (1), characterized in that, The upper surface of the cover plate bracket (1) is provided with a groove, and a concrete cover plate body (2) is placed inside the groove. The concrete cover plate body (2) includes a protective frame (3), multiple transverse support ribs (4), multiple longitudinal support ribs (5), a heat insulation layer (6), a composite concrete layer (7), and an electromagnetic shielding layer (8). Each transverse support rib (4) is horizontally fixedly connected to the inside of the protective frame (3), and each longitudinal support rib (5) is vertically fixedly connected to the inside of the protective frame (3). The heat insulation layer (6) is fixedly connected to the lower surface of the inside of the protective frame (3). The composite concrete layer (7) is disposed on the upper surface of the heat insulation layer (6) and wraps around the outer surfaces of the transverse support ribs (4) and each longitudinal support rib (5). The electromagnetic shielding layer (8) is fixedly connected to the outer surface of the composite concrete layer (7).

2. The fiber-reinforced composite concrete protective airtight cover for underground integrated pipe corridors according to claim 1, characterized in that, The protective frame (3) is made of high-strength steel.

3. The fiber-reinforced composite concrete protective airtight cover for underground integrated pipe corridors according to claim 1, characterized in that, Each of the transverse support bars (4) and each of the longitudinal support bars (5) are steel bars, and the two ends of each of the transverse support bars (4) and each of the longitudinal support bars (5) are fixedly connected to the inner wall of the protective frame (3) by welding.

4. The fiber-reinforced composite concrete protective airtight cover for underground integrated pipe corridors according to claim 1, characterized in that, The heat insulation layer (6) is a ceramic plate.

5. The fiber-reinforced composite concrete protective airtight cover for underground integrated pipe corridors according to claim 1, characterized in that, The composite concrete layer (7) is a composite concrete slab.

6. The fiber-reinforced composite concrete protective airtight cover for underground integrated pipe corridors according to claim 1, characterized in that, The electromagnetic shielding layer (8) is a copper-plated steel plate.

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