A municipal road pipeline protection structure

Abstract

The utility model discloses a kind of municipal road pipeline protection structures, including supporting side wall, protective cover and filling layer, the supporting side wall includes two groups of two pairs of settings, which are used to support the protective cover and resist outer soil pressure upwards, the top end of the supporting side wall is close to the side of pipeline L-shaped notch is set, the left and right sides of the protective cover are respectively set on the L-shaped notch, and the contact surface of the L-shaped notch and the protective cover is provided with energy consumption layer, the upper surface of the protective cover is laid with stress isolation layer, the filling layer is arranged in the space formed by the protective cover and two supporting side walls, for wrapping fixed pipeline and absorbing impact energy.

Description

Technical Field

[0001] This utility model relates to the field of municipal engineering technology, specifically to a protection structure for municipal road pipelines. Background Technology

[0002] Pipelines beneath municipal roads (such as power, communication, and water supply pipes) are typically buried directly or installed in concrete trenches. This traditional rigid protection method has a significant drawback: poor impact resistance and load dispersion.

[0003] When roads are subjected to heavy vehicle traffic or external impacts, the resulting massive instantaneous loads act directly on the protective structures. Traditional concrete trenches or covers rigidly transmit these impact forces to the internal pipelines, easily leading to pipe deformation or even rupture. Although some solutions attempt to reinforce the structure with stronger materials, they do not fundamentally solve the problem of how to effectively buffer, absorb, and disperse these external loads to avoid direct stress on the pipelines. Utility Model Content

[0004] The purpose of this utility model is to provide a municipal road pipeline protection structure to solve the risk problem of pipeline damage due to concentrated loads and instantaneous high pressure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A municipal road pipeline protection structure includes supporting sidewalls, protective covers, and a filling layer. The supporting sidewalls include two pairs of sets for supporting the protective covers upwards and resisting external soil pressure. An L-shaped groove is provided on the top of the supporting sidewalls near the pipeline. The left and right sides of the protective cover are respectively placed on the L-shaped grooves, and an energy dissipation layer is provided on the contact surface between the L-shaped grooves and the protective cover. A stress isolation layer is laid on the upper surface of the protective cover. The filling layer is disposed within the space enclosed by the protective cover and the two supporting sidewalls, and is used to wrap and fix the pipeline and absorb impact energy.

[0007] Preferably, the protective cover plate is a reinforced concrete component, and its interior is provided with longitudinal and transverse reinforcing bars arranged in a cross pattern.

[0008] Preferably, the protective cover is composed of multiple standard-length cover units spliced ​​together along the pipeline, and each cover unit is 1m long.

[0009] Preferably, the stress isolation layer comprises a geotextile layer and an EPS foam board layer arranged from top to bottom, wherein the thickness of the geotextile layer is 5 mm.

[0010] Preferably, the supporting sidewall is a cast-in-place concrete wall, and its bottom is provided with a crushed stone pad layer.

[0011] Preferably, the energy-consuming layer is a neoprene rubber layer with a thickness of 10 mm.

[0012] Preferably, the filling layer is a foamed concrete layer.

[0013] By adopting the above technical solution, this utility model has the following advantages compared with the prior art:

[0014] 1. This utility model provides a protective structure for municipal road pipelines. A double buffer layer is installed at the top and joints of the structure. The stress isolation layer on the upper surface of the protective cover plate serves as the first-level buffer, effectively dispersing and absorbing vertical pressure from the road surface. The energy dissipation layer installed at the L-shaped groove joint surface between the protective cover plate and the supporting sidewall serves as the second-level buffer, not only buffering vertical pressure but also adapting to lateral deformation and shear force. These two layers work together to form a highly efficient mechanical energy absorption-dissipation system, ensuring that the impact energy transmitted to the internal pipelines is minimized.

[0015] 2. This utility model provides a protection structure for municipal road pipelines. Through multi-level buffering, the concentrated impact load generated by vehicle rolling is transformed into a more evenly distributed and significantly weakened static load, which protects the internal filling layer and pipelines from damage by instantaneous high pressure, and significantly improves the safety and service life of the pipelines.

[0016] 3. This utility model provides a protection structure for municipal road pipelines. The overlapping structure of the L-shaped groove, combined with the energy consumption layer, provides a buffer while ensuring a reliable connection between the protective cover and the supporting side wall, thus guaranteeing the stability and load-bearing capacity of the overall structure and avoiding structural instability problems that may result from the introduction of flexible design. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] It should be noted that in this utility model, the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", and "outer" 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 of this utility model must have a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0020] Example

[0021] Please refer to Figure 1 As shown, this utility model discloses a protection structure for municipal road pipelines, including a supporting side wall 1, a protective cover plate 2, and a filling layer 3. The supporting side wall 1 includes two pairs of sets of structures for supporting the protective cover plate 2 upwards and resisting external soil pressure. The supporting side wall 1 is a cast-in-place concrete wall, and its bottom is provided with a crushed stone pad layer 11. An L-shaped groove 12 is opened on the top of the supporting side wall 1 near the pipeline. The left and right sides of the protective cover plate 2 are respectively erected on the L-shaped groove 12, and an energy dissipation layer 13 is provided on the contact surface between the L-shaped groove 12 and the protective cover plate 2. A stress isolation layer 21 is laid on the upper surface of the protective cover plate 2. The filling layer 3 is set in the space enclosed by the protective cover plate 2 and the two supporting side walls 1, and is used to wrap and fix the pipeline 4 on which the pipeline is placed and absorb impact energy.

[0022] The supporting sidewall 1 is made of C30 cast-in-place concrete with a rectangular cross-section. In use, firstly, a trench is excavated along the planned pipeline route, and the bottom of the trench is leveled and compacted; subsequently, the supporting sidewall 1 is poured on both sides of the bottom of the trench. In this embodiment, to ensure structural stability and accommodate possible foundation settlement, a 150mm thick crushed stone cushion layer 11 is laid at the bottom of the supporting sidewall 1 before its pouring. This crushed stone cushion layer 11 is formed by compacting well-graded crushed stone, effectively dispersing stress at the wall base and providing good drainage performance.

[0023] At the top of the supporting sidewall 1, on the side near the future pipe 4, an L-shaped groove 12 is pre-cut, which provides an overlapping platform for the protective cover plate 2.

[0024] After the supporting sidewalls 1 have cured to their designed strength, the pipe 4 is laid. In this embodiment, a DN300 HDPE water supply pipe is placed between the two supporting sidewalls 1 as pipe 4. Subsequently, the filling layer 3 is poured into the trench. In this embodiment, the filling layer 3 has a dry density of 600 kg / m³. 3 Foamed concrete is poured to be flush with the lower edge of the L-shaped groove 12. Foamed concrete has good fluidity and lightweight properties, which can perfectly wrap and fix the pipe 4, and has excellent impact energy absorption capacity due to its porous structure.

[0025] Protective cover plate 2 is a precast reinforced concrete component, internally reinforced with Φ10 longitudinal and transverse bars arranged at 150mm intervals to form a steel mesh, providing extremely high bending and compressive strength. For ease of transportation and installation, each protective cover plate 2 is designed as a standard 1-meter-long unit. During installation, multiple cover plate units are sequentially spliced ​​along the extension direction of pipe 4 to form a complete protective top cover.

[0026] Before hoisting the protective cover plate 2 into place, a buffer structure needs to be set at the contact interface between it and the supporting side wall 1. Specifically, a 10mm thick energy dissipation layer 13 is pre-attached to the horizontal support surface and vertical stop surface of the L-shaped groove 12. In this embodiment, the energy dissipation layer 13 is made of neoprene rubber. Subsequently, the left and right sides of the protective cover plate 2 are respectively placed on the L-shaped grooves 12 of the left and right supporting side walls 1, and supported and buffered by the neoprene rubber layer. This design allows the upper load on the protective cover plate 2 to be effectively transferred to the supporting side wall 1 through the flexible neoprene rubber layer, while absorbing and dissipating vibration energy and avoiding stress concentration.

[0027] Finally, a stress isolation layer 21 is laid on the upper surface of the installed protective cover plate 2. In this embodiment, the stress isolation layer 21 is a composite structure, consisting of a 5mm thick geotextile layer and a 30mm thick EPS foam board layer from top to bottom. The EPS foam board is lightweight, compression-resistant, and has good elasticity, effectively isolating and dispersing concentrated loads from road backfill and vehicle tires; the geotextile plays an isolation and protective role, preventing backfill particles from embedding into the gaps in the foam board. After the stress isolation layer 21 is laid, road backfilling and compaction can be carried out to restore the road surface.

[0028] The pipeline protection structure in this embodiment operates as follows: When a heavy vehicle passes by on the road, the dynamic load generated is first transferred from the backfill soil to the stress isolation layer 21. The EPS foam board undergoes elastic deformation, absorbing and dispersing the first wave of impact. The remaining load is transferred to the robust protective cover plate 2, which transforms it into a more evenly distributed load. When the load is transferred to the supporting sidewall 1, it must pass through the neoprene rubber energy dissipation layer 13 at the L-shaped groove 12. This layer deforms again, dissipating energy and buffering shear force. Finally, a very small portion of the residual energy is transferred through the supporting sidewall 1 to the crushed stone cushion layer 11 and the foundation, or absorbed by the foamed concrete of the filling layer 3, thereby ensuring that the internal pipeline 4 is always in a protected flexible environment, greatly reducing the risk of damage.

[0029] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. A protection structure for municipal road pipelines, characterized in that: The system includes supporting sidewalls, a protective cover plate, and a filling layer. The supporting sidewalls consist of two pairs of sets that support the protective cover plate upwards and resist external soil pressure. An L-shaped groove is provided on the top of the supporting sidewalls near the pipeline. The left and right sides of the protective cover plate are respectively placed on the L-shaped grooves, and an energy dissipation layer is provided on the contact surface between the L-shaped grooves and the protective cover plate. A stress isolation layer is laid on the upper surface of the protective cover plate. The filling layer is located within the space enclosed by the protective cover plate and the two supporting sidewalls, and is used to wrap and fix the pipeline and absorb impact energy.

2. The municipal road pipeline protection structure as described in claim 1, characterized in that: The protective cover plate is a reinforced concrete component, and its interior is provided with longitudinal and transverse reinforcing bars arranged in a cross pattern.

3. The municipal road pipeline protection structure as described in claim 1, characterized in that: The protective cover is composed of multiple standard-length cover units spliced ​​together along the pipeline, and each cover unit is 1m long.

4. The municipal road pipeline protection structure as described in claim 1, characterized in that: The stress isolation layer includes a geotextile layer and an EPS foam board layer arranged from top to bottom, wherein the thickness of the geotextile layer is 5 mm.

5. A municipal road pipeline protection structure as described in claim 1, characterized in that: The supporting side wall is a cast-in-place concrete wall with a crushed stone cushion layer at its bottom.

6. A municipal road pipeline protection structure as described in claim 1, characterized in that: The energy-consuming layer is a neoprene rubber layer with a thickness of 10 mm.

7. A municipal road pipeline protection structure as described in claim 1, characterized in that: The filling layer is a foamed concrete layer.

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