Construction structure of pipe gallery intruded road

Abstract

The utility model discloses a construction structure of a pipe gallery invading road, and belongs to the technical field of pipe gallery construction. The structure comprises a foundation pit, a pipe gallery, a soil engineering base material and a leveling layer, the pipe gallery is located in the foundation pit, a soil base layer, a rubble layer A, a rubble layer B and a rubble layer C are sequentially arranged on the two sides of the pipe gallery in the foundation pit from bottom to top, one part of the soil engineering base material is laid on the top face of the pipe gallery, and the other part of the soil engineering base material is laid on the rubble layer C; the leveling layer is arranged on the geotechnical base material and the pipe gallery, the gravel layers C are arranged on the two sides of the leveling layer, and the road surface layers are arranged on the leveling layer and the gravel layers C. A soil base layer, a rubble layer A, a rubble layer B and a rubble layer C are sequentially arranged on the two sides of the pipe gallery in the foundation pit from bottom to top, the pipe gallery is stabilized through the soil base layer, the rubble layer A, the rubble layer B and the rubble layer C, then compaction is conducted through a road surface layer on the whole, and it is ensured that the road can be smoothly constructed.

Description

Technical Field

[0001] The utility model relates to a construction structure for a pipe gallery invading a road, and belongs to the technical field of pipe gallery construction. Background Art

[0002] A comprehensive pipeline corridor is an underground urban pipeline corridor, that is, a tunnel space built underground in the city, which integrates various engineering pipelines such as electricity, communications, gas, heating, water supply and drainage, and is equipped with special inspection ports, lifting ports and monitoring systems. It implements unified planning, design, construction and management. It is an important infrastructure and "lifeline" to ensure the operation of the city. In some municipal projects, part of the comprehensive pipeline corridor is laid under the road.

[0003] For example, the Chinese patent document with publication number CN110924251A discloses a road structure with a pipe gallery at the bottom, including: a motor vehicle lane, a sunken green belt, a non-motor vehicle lane, a mixing pile, a pipe gallery, a supporting pile, a concrete top protective layer, a top reinforcement, a side reinforcement and a leveling support layer; a plurality of mixing piles are arranged at intervals, and two rows of supporting piles are arranged and are respectively arranged on both sides of the pipe gallery, one row of supporting piles is located between the pipe gallery and the mixing piles, a concrete top protective layer is arranged at intervals above the pipe gallery, and the upper surface of the concrete top protective layer is flush with the top surface of the mixing piles and a leveling support layer is laid on it; a top reinforcement is connected and fixed between the top of the pipe gallery and the concrete top protective layer, and a side reinforcement is connected and fixed between the side of the pipe gallery and the supporting piles; two sunken green belts are arranged and are respectively located on both sides of the motor vehicle lane, and two non-motor vehicle lanes are arranged and are respectively located on the side of the sunken green belt away from the motor vehicle lane. It has the effect that the pipe gallery is not prone to local dislocation and the overall structure is more stable.

[0004] However, sometimes the distance from the tunnel to the road surface is short, only 18.8 cm to 33.8 cm. In this case, there is not enough space to construct a concrete top protective layer and anchor rods above the tunnel to stabilize the tunnel. Therefore, how to stabilize the tunnel and complete the road construction in this case is a technical problem that needs to be urgently solved by technical personnel in this field. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a construction structure for a pipeline gallery intruding into a road.

[0006] The utility model is realized through the following technical solutions:

[0007] A construction structure for a pipeline corridor intruding a road comprises a foundation pit, a pipeline corridor, a geotechnical base material and a leveling layer, wherein the pipeline corridor is located in the foundation pit, and a soil base layer, a crushed stone layer A, a crushed stone layer B and a crushed stone layer C are sequentially arranged on both sides of the pipeline corridor from bottom to top in the foundation pit, a part of the geotechnical base material is laid on the top surface of the pipeline corridor, and another part is laid on the crushed stone layer C, the leveling layer is arranged on the geotechnical base material and the pipeline corridor, and crushed stone layers C are also arranged on both sides of the leveling layer, and a road surface layer is arranged on the leveling layer and the crushed stone layer C.

[0008] The compaction degree of the soil base is not less than 96%.

[0009] The crushed stone layer A is a graded crushed stone layer, and its thickness is not less than 20 cm.

[0010] The crushed stone layer B is a 3.5% cement stabilized crushed stone layer, and its thickness is not less than 17 cm.

[0011] The crushed stone layer C is a 5% cement-stabilized crushed stone layer, and its overall thickness is not less than 17 cm.

[0012] The geotechnical base material is a glass fiber geogrid.

[0013] The width of the geotechnical base material is not less than 200 cm, and half of the geotechnical base material is laid on the top surface of the pipeline gallery in the width direction, and the other half is laid on the gravel layer C.

[0014] The top surface of the leveling layer is coplanar with the top surfaces of the crushed stone layers C on both sides thereof.

[0015] The leveling layer is ATB25 asphalt stabilized gravel layer A.

[0016] The road surface layer comprises a slurry seal layer, an ATB25 asphalt stabilized macadam layer B, a medium-grained 4% SBS modified asphalt concrete layer and a fine-grained SBS modified asphalt concrete layer which are laid in sequence from bottom to top.

[0017] The beneficial effect of the utility model is that a soil base layer, a crushed stone layer A, a crushed stone layer B and a crushed stone layer C are arranged in sequence from bottom to top on both sides of the pipe gallery in the foundation pit, the pipe gallery is stabilized by the soil base layer, the crushed stone layer A, the crushed stone layer B and the crushed stone layer C, and then the road surface layer is generally compacted to ensure that the road construction can be completed smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] In the figure: 1-pipeline corridor, 2-geotechnical base material, 3-leveling layer, 4-soil base layer, 5-gravel layer A, 6-gravel layer B, 7-gravel layer C, 8-slurry seal layer, 9-ATB25 asphalt stabilized gravel layer B, 10-medium-grained 4% SBS modified asphalt concrete layer, 11-fine-grained SBS modified asphalt concrete layer. DETAILED DESCRIPTION

[0020] The technical solution of the utility model is further described below, but the scope of protection required is not limited to the description.

[0021] like Figure 1 As shown, the utility model discloses a construction structure for a pipe gallery intruding a road, comprising a foundation pit, a pipe gallery 1, a geotechnical base material 2 and a leveling layer 3. The pipe gallery 1 is located in the foundation pit, and soil base layer 4, crushed stone layer A5, crushed stone layer B6 and crushed stone layer C7 are sequentially arranged on both sides of the pipe gallery 1 from bottom to top in the foundation pit. A part of the geotechnical base material 2 is laid on the top surface of the pipe gallery 1, and another part is laid on the crushed stone layer C7. The leveling layer 3 is arranged on the geotechnical base material 2 and the pipe gallery 1, and crushed stone layers C7 are also arranged on both sides of the leveling layer 3. A road surface layer is arranged on the leveling layer 3 and the crushed stone layer C7. Since the distance from the pipe gallery 1 to the top surface of the road is only 18.8 cm to 33.8 cm, there is not enough space to construct a concrete top protective layer and anchor rods on the top of the pipe gallery 1 to stabilize the pipe gallery 1 as in the prior art. Therefore, in the foundation pit of the utility model, a soil base layer 4, a crushed stone layer A5, a crushed stone layer B6 and a crushed stone layer C7 are arranged in sequence from bottom to top on both sides of the pipeline corridor 1. The pipeline corridor 1 is stabilized by the soil base layer 4, the crushed stone layer A5, the crushed stone layer B6 and the crushed stone layer C7, and then the road surface layer is compacted as a whole to ensure that the road construction can be completed smoothly.

[0022] The compaction degree of the soil base layer 4 is not less than 96%.

[0023] The crushed stone layer A5 is a graded crushed stone layer, and its thickness is not less than 20 cm.

[0024] The gravel layer B6 is a 3.5% cement-stabilized gravel layer, and its thickness is not less than 17 cm. Principle of cement-stabilized gravel: Cement-stabilized gravel uses graded gravel as aggregate, adopts a certain amount of cementitious materials and sufficient mortar volume to fill the gaps in the aggregate, and is spread and compacted according to the interlocking principle. Its compaction degree is close to its density, and its strength mainly depends on the interlocking principle between the gravel, and at the same time, there is sufficient mortar volume to fill the gaps in the aggregate. It has high initial strength, and its strength increases with age and quickly forms a board body, so it has high strength, good impermeability and frost resistance. After cement-stabilized gravel is alive, it will not be muddy when it rains, and its surface is solid, making it an ideal base material for high-grade pavement.

[0025] The gravel layer C7 is a 5% cement-stabilized gravel layer, and its overall thickness is not less than 17 cm.

[0026] The geotechnical substrate 2 is a glass fiber geogrid. The main components of glass fiber are silicon oxide, which is an inorganic material. Its physical and chemical properties are extremely stable, and it has high strength, high modulus, high wear resistance and excellent cold resistance, no long-term creep; good thermal stability; the mesh structure makes the aggregate interlock and restrict; improves the load-bearing capacity of the asphalt mixture. Because the surface is coated with special modified asphalt, it has dual composite properties, with both the excellence of glass fiber and compatibility with asphalt mixture, which greatly improves the wear resistance and shear resistance of the geogrid.

[0027] The width of the geotechnical base material 2 is not less than 200 cm, and half of the geotechnical base material 2 in the width direction is laid on the top surface of the pipeline gallery 1, and the other half is laid on the gravel layer C7.

[0028] The top surface of the leveling layer 3 is coplanar with the top surfaces of the crushed stone layers C7 on both sides thereof.

[0029] The leveling layer 3 is an ATB25 asphalt stabilized gravel layer A.

[0030] The road surface layer comprises a slurry seal layer 8, an ATB25 asphalt stabilized macadam layer B9, a medium-grained 4% SBS modified asphalt concrete layer 10 and a fine-grained SBS modified asphalt concrete layer 11 which are laid in sequence from bottom to top.

Claims

1. A construction structure for a pipe gallery intruding into a road, characterized in that: The invention comprises a foundation pit, a pipe gallery (1), a geotechnical base material (2) and a leveling layer (3), wherein the pipe gallery (1) is located in the foundation pit, and a soil base layer (4), a crushed stone layer A (5), a crushed stone layer B (6) and a crushed stone layer C (7) are sequentially arranged on both sides of the pipe gallery (1) from bottom to top in the foundation pit, a part of the geotechnical base material (2) is laid on the top surface of the pipe gallery (1), and another part is laid on the crushed stone layer C (7), the leveling layer (3) is arranged on the geotechnical base material (2) and the pipe gallery (1), and crushed stone layers C (7) are also arranged on both sides of the leveling layer (3), and a road surface layer is arranged on the leveling layer (3) and the crushed stone layer C (7).

2. The construction structure of the pipe gallery intruding the road as claimed in claim 1, characterized in that: The compaction degree of the soil base layer (4) is not less than 96%.

3. The construction structure of the pipe gallery intruding the road as claimed in claim 1 is characterized by: The crushed stone layer A (5) is a graded crushed stone layer, and its thickness is not less than 20 cm.

4. The construction structure of the pipe gallery intruding the road as claimed in claim 1, characterized in that: The gravel layer B (6) is a 3.5% cement stabilized gravel layer, and its thickness is not less than 17 cm.

5. The construction structure of the pipe gallery intruding into the road as claimed in claim 1, characterized in that: The gravel layer C (7) is a 5% cement-stabilized gravel layer, and its overall thickness is not less than 17 cm.

6. The construction structure of the pipe gallery intruding into the road as claimed in claim 1, characterized in that: The geotechnical base material (2) is a glass fiber geogrid.

7. The construction structure of the pipe gallery intruding into the road as claimed in claim 1, characterized in that: The width of the geotechnical base material (2) is not less than 200 cm, and half of the geotechnical base material (2) is laid on the top surface of the pipeline gallery (1) in the width direction, and the other half is laid on the gravel layer C (7).

8. The construction structure of the pipe gallery intruding into the road as claimed in claim 1, characterized in that: The top surface of the leveling layer (3) is coplanar with the top surfaces of the crushed stone layers C (7) on both sides thereof.

9. The construction structure of the pipe gallery intruding into the road as claimed in claim 1, characterized in that: The leveling layer (3) is an ATB25 asphalt stabilized gravel layer A.

10. The construction structure of the pipe gallery intruding into the road according to claim 1, characterized in that: The road surface layer comprises a slurry seal layer (8), an ATB25 asphalt stabilized crushed stone layer B (9), a medium-grained 4% SBS modified asphalt concrete layer (10) and a fine-grained SBS modified asphalt concrete layer (11) which are laid in sequence from bottom to top.

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