Double-pipe same-groove shallow-buried structure

Abstract

The utility model provides a double-pipe same-groove shallow-buried structure, which relates to the technical field of pipeline shallow-buried structures, and comprises a foundation trench, a first pipeline, a second pipeline, a concrete protection plate layer and a pavement layer, the foundation trench is located above a top plate of an existing track structure, the concrete protection plate layer covers the foundation trench, and the pavement layer is arranged on the concrete protection plate layer and is in lap joint with an adjacent pavement. The extension direction of the first pipeline is parallel to the extension direction of the second pipeline; the foundation trench comprises a concrete pouring area and a gravel filling area, a plurality of rectangular steel bar hoops are arranged in the concrete pouring area and are arranged in the extending direction of the first pipeline, and the same long steel bar is welded to the inner sides of the rectangular steel bar hoops; the first pipeline and the second pipeline are located in the rectangular steel bar hoop. The problem that the shallowly-buried pipeline is prone to breakage and damage under the condition of long-term compression due to the fact that road surface pressure is transmitted to the shallowly-buried pipeline is solved.

Description

Technical Field

[0001] This utility model relates to the field of shallow buried pipeline structure technology, and in particular to a shallow buried structure for two pipes in the same trench. Background Technology

[0002] my country's transportation industry is developing rapidly, and subway construction is also accelerating. However, subway construction usually needs to be carried out under existing urban roads, which are often under buried pipelines. Some underground pipelines may affect construction, so pipeline relocation is necessary.

[0003] In actual construction, water supply and drainage pipelines are generally buried at considerable depths. The original pipeline was a DN1200 water supply pipe with a maximum designed working pressure of 1.5 MPa and a maximum test pressure of 2.0 MPa. However, after the construction of the subway, the distance between the subway station's structural roof and the restored road surface is only 1900 mm. The water supply pipe is located on the station's structural roof and under the existing main traffic artery, with no other relocation route available. Therefore, the original water supply pipe could not be moved back to its original location. Consequently, it was adjusted to a dual-pipe setup of DN1000 and DN800 water supply pipes in the same trench. Shallow-buried pipelines are directly covered with soil. When vehicles drive on the road, they exert pressure on the road surface. Because the shallow-buried pipelines are buried under the road, this pressure is further transmitted to the pipelines, making them prone to rupture and damage under long-term pressure. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a shallow buried structure with two pipes in the same trench, which solves the problem that the shallow buried pipeline is prone to cracking and damage when road pressure is transmitted to it and it is subjected to long-term pressure.

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

[0006] A shallow buried structure with two pipes in the same trench includes: a foundation trench, a first pipe, a second pipe, a protective slab layer, and a road surface layer;

[0007] The foundation trench is located above the existing track structure top plate, the mortar protection plate layer covers the foundation trench, and the road surface layer is set on the mortar protection plate layer and overlaps with the adjacent road surface;

[0008] The extension direction of the first pipe is parallel to the extension direction of the second pipe;

[0009] The foundation trench includes a concrete pouring area and a sand and gravel filling area. Several rectangular steel reinforcement hoops are provided in the concrete pouring area. The several rectangular steel reinforcement hoops are arranged along the extension direction of the first pipe. The same long steel bar is welded to the inner side of the several rectangular steel reinforcement hoops. The first pipe and the second pipe are located inside the rectangular steel reinforcement hoops.

[0010] Preferably, the rectangular steel reinforcement hoop is vertically connected with a plurality of first positioning steel reinforcement groups and a plurality of second steel reinforcement groups. Each first positioning steel reinforcement group includes two symmetrically arranged first positioning steel reinforcements, which are respectively arranged on both sides of the first pipe. Each second positioning steel reinforcement group includes two second positioning steel reinforcements, which are respectively arranged on both sides of the second pipe.

[0011] Preferably, a first limiting plate is provided on one side of the two first positioning steel bars to jointly limit the first pipe, and a second limiting plate is provided on one side of the two second positioning steel bars to jointly limit the second pipe.

[0012] Preferably, the rectangular steel reinforcement hoop is composed of two horizontal steel bars and two vertical steel bars connected together. The lower ends of the first positioning steel bar and the second positioning steel bar are both fixed with sliding sleeves. The sliding sleeves can slide on the lower horizontal steel bar and be welded and fixed. The upper ends of the first positioning steel bar and the second positioning steel bar are both welded and fixed to the upper horizontal steel bar.

[0013] Preferably, a plurality of long reinforcing bars are provided, and the plurality of long reinforcing bars are arranged at intervals along the inner wall of the rectangular reinforcing bar hoop.

[0014] Preferably, the protective slab layer is provided with a steel reinforcement frame.

[0015] Preferably, the pavement layer includes, from bottom to top, a first emulsified asphalt tack coat, an asphalt intermediate layer, a second emulsified asphalt tack coat, and an asphalt surface layer.

[0016] This utility model has the following beneficial effects:

[0017] A protective slab layer is installed, and a concrete pouring area is set up in the foundation trench. Rectangular steel hoops are used to increase strength. When the first and second pipelines are installed in the foundation trench, they play a protective role, thereby avoiding the pipelines from being squeezed by vehicles, which would cause pipeline damage and reduce their service life, thus further improving their service life.

[0018] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a partial front view schematic diagram of the structure of this utility model;

[0021] Figure 3This is a schematic diagram of the pavement layer structure of this utility model.

[0022] In the above attached diagrams: 1. Foundation trench; 11. Concrete pouring area; 12. Sand and gravel filling area; 2. First pipeline; 3. Second pipeline; 4. Asphalt protective slab layer; 41. Reinforcing steel frame; 5. Road surface layer; 51. First emulsified asphalt tack coat; 52. Asphalt intermediate layer; 53. Second emulsified asphalt tack coat; 54. Asphalt surface layer; 6. Rectangular reinforcing steel hoop; 7. Long reinforcing steel bar; 71. First positioning reinforcing steel bar; 72. Second positioning reinforcing steel bar; 81. First limiting plate; 82. Second limiting plate; 81. First limiting plate; 82. Second limiting plate; 9. Sliding sleeve. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model clearer and easier to understand, the technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0024] Please see Figures 1 to 3 As shown, a shallow buried structure with two pipes in the same trench includes: a foundation trench 1, a first pipe 2, a second pipe 3, a concrete protection slab layer 4, and a road surface layer 5. The foundation trench 1 is located above the top slab of the existing track structure, the concrete protection slab layer 4 covers the foundation trench 1, and the road surface layer 5 is disposed on the concrete protection slab layer 4 and overlaps with the adjacent road surface. The extension direction of the first pipe 2 is parallel to the extension direction of the second pipe 3. The foundation trench 1 includes a concrete pouring area 11 and a sand and gravel filling area 12. Several rectangular steel reinforcement hoops 6 are provided in the concrete pouring area 11. The several rectangular steel reinforcement hoops 6 are arranged along the extension direction of the first pipe 2, and the same long steel bar 7 is welded to the inner side of the several rectangular steel reinforcement hoops 6. The first pipe 2 and the second pipe 3 are located inside the rectangular steel reinforcement hoops 6.

[0025] A foundation trench 1 is constructed to house the first pipe 2 and the second pipe 3. The cross-section of the foundation trench 1 is an inverted trapezoid to facilitate construction. A protective slab layer 4 covers the foundation trench 1 to withstand pressure from above. The foundation trench 1 includes a concrete pouring area 11 and a sand and gravel filling area 12. Several rectangular steel reinforcement hoops 6 are installed within the concrete pouring area 11, and the first pipe 2 and the second pipe 3 are located within the rectangular steel reinforcement hoops 6, further protecting them. The protective slab layer 4 and the concrete pouring area 11 within the foundation trench 1, along with the reinforced concrete hoops 6, provide protection for the first pipe 2 and the second pipe 3 when installed within the foundation trench 1. This prevents the pipelines from being frequently crushed by vehicles, thus avoiding damage and extending their service life.

[0026] Furthermore, such as Figure 1As shown, the rectangular steel reinforcement hoop 6 is vertically connected with several first positioning steel reinforcement groups and several second steel reinforcement groups. Each first positioning steel reinforcement group includes two symmetrically arranged first positioning steel reinforcements 71, which are respectively located on both sides of the first pipe 2. Each second positioning steel reinforcement group includes two second positioning steel reinforcements 72, which are respectively located on both sides of the second pipe 3. The first positioning steel reinforcements 71 and the second positioning steel reinforcements 72 are both connected and arranged within the rectangular steel reinforcement hoop 6, increasing the stability and supporting strength of the rectangular steel reinforcement hoop 6, allowing it to better provide support and protection. Furthermore, the arrangement of the two first positioning steel reinforcements 71 on both sides of the first pipe 2 and the two second positioning steel reinforcements 72 on both sides of the second pipe 3 serves to position the first pipe 2 and the second pipe 3, facilitating placement.

[0027] Furthermore, such as Figure 1 and Figure 2 As shown, a first limiting plate 81 is provided on one side of the two first positioning steel bars 71 to jointly limit the first pipe 2, and a second limiting plate 82 is provided on one side of the two second positioning steel bars 72 to jointly limit the second pipe 3. The side of the first limiting plate 81 that contacts the first pipe 2 is an arc surface that mates with the first pipe 2, increasing the contact area with the first pipe 2. The side of the second limiting plate 82 that contacts the second pipe 3 is an arc surface that mates with the second pipe 3, increasing the contact area with the second pipe 3, so that the first limiting plate 81 and the second limiting plate 82 can better limit the pipe; and as... Figure 1 As shown, the first limiting plate 81 and the second limiting plate 82 are both located below the axis of the first pipe 2 and the second pipe 3, respectively, which facilitates the placement of pipelines.

[0028] Furthermore, such as Figure 1 and Figure 2 As shown, the rectangular steel reinforcement hoop 6 is composed of two horizontal steel bars and two vertical steel bars connected together. The lower ends of the first positioning steel bar 71 and the second positioning steel bar 72 are both fixed with sliding sleeves 9. The sliding sleeves 9 can slide on the lower horizontal steel bar and be welded and fixed. The upper ends of the first positioning steel bar 71 and the second positioning steel bar 72 are both welded and fixed to the upper horizontal steel bar. The two horizontal steel bars and the two vertical steel bars are connected to form a rectangle. The two sliding sleeves 9 are respectively slidably fitted onto the lower horizontal steel bar, facilitating the adjustment of the position of the sliding sleeves 9 before welding and fixing.

[0029] Specifically, a plurality of long steel bars 7 are provided, and the plurality of long steel bars 7 are arranged at intervals along the inner wall of the rectangular steel hoop 6.

[0030] Furthermore, such as Figure 1As shown, a steel reinforcement frame 41 is provided inside the protective slab layer 4. The steel reinforcement frame 41 is formed by several crisscrossing steel bars, and two steel reinforcement frames 41 are provided to increase the strength of the protective slab layer 4.

[0031] Furthermore, such as Figure 1 and Figure 3 The pavement layer 5 comprises, from bottom to top, a first emulsified asphalt tack coat 51, an asphalt intermediate layer 52, a second emulsified asphalt tack coat 53, and an asphalt top layer 54. The first emulsified asphalt tack coat 51 and the second emulsified asphalt tack coat 53 bond the layers together. The asphalt intermediate layer 52 and the asphalt top layer 54 are made of asphalt concrete, which improves the ability of the paving aggregate to resist damage to the pavement from traffic and natural factors, making the pavement smooth, dust-free, impermeable, and durable.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A double pipe in the same trench shallow buried structure, characterized in that, include: Foundation trench (1), first pipeline (2), second pipeline (3), concrete protection slab layer (4), and road surface layer (5); The foundation trench (1) is located above the existing track structure top plate, the mortar protection plate layer (4) covers the foundation trench (1), and the road surface layer (5) is set on the mortar protection plate layer (4) and overlaps with the adjacent road surface; The extension direction of the first pipe (2) is parallel to the extension direction of the second pipe (3); The foundation trench (1) includes a concrete pouring area (11) and a sand and gravel filling area (12). The concrete pouring area (11) is provided with a number of rectangular steel reinforcement hoops (6). The number of rectangular steel reinforcement hoops (6) are arranged along the extension direction of the first pipe (2). The same long steel bar (7) is welded to the inner side of the number of rectangular steel reinforcement hoops (6). The first pipe (2) and the second pipe (3) are located inside the rectangular steel reinforcement hoops (6).

2. A twin-tube shallow-burial structure of the same-slot type according to claim 1, wherein The rectangular steel hoop (6) is vertically connected with several first positioning steel bars and several second steel bars. Each first positioning steel bar group includes two symmetrically arranged first positioning steel bars (71), which are respectively arranged on both sides of the first pipe (2). Each second positioning steel bar group includes two second positioning steel bars (72), which are respectively arranged on both sides of the second pipe (3).

3. A twin pipe shallow buried structure of the same slot according to claim 2, characterized in that, Two first positioning steel bars (71) are provided with a first limiting plate (81) on the opposite side to jointly limit the first pipe (2), and two second positioning steel bars (72) are provided with a second limiting plate (82) on the opposite side to jointly limit the second pipe (3).

4. The shallow buried structure with two pipes in the same trench as described in claim 2, characterized in that, The rectangular steel reinforcement hoop (6) is composed of two horizontal steel bars and two vertical steel bars connected together. The lower ends of the first positioning steel bar (71) and the second positioning steel bar (72) are both fixed with sliding sleeves (9). The sliding sleeves (9) can slide on the lower horizontal steel bar and be welded and fixed. The upper ends of the first positioning steel bar (71) and the second positioning steel bar (72) are both welded and fixed to the upper horizontal steel bar.

5. The shallow buried structure with two pipes in the same trench as described in claim 1, characterized in that, The long steel bars (7) are provided in several quantities, and the long steel bars (7) are arranged at intervals along the inner wall of the rectangular steel hoop (6).

6. The shallow buried structure with two pipes in the same trench as described in claim 1, characterized in that, The protective slab layer (4) is provided with a steel reinforcement frame (41).

7. The shallow buried structure with two pipes in the same trench as described in claim 1, characterized in that, The road surface layer (5) includes a first emulsified asphalt tack coat (51), an asphalt intermediate layer (52), a second emulsified asphalt tack coat (53), and an asphalt surface layer (54) arranged sequentially from bottom to top.

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