CN217352597U - Deformation protection structure of underground pipeline - Google Patents

Abstract

The utility model discloses a pipeline's deformation protection architecture, the purpose is the security of guaranteeing to bury pipeline receiving ground overload and closing on under the soil body disturbance condition, protection architecture is including setting up little recess and the basic bed course in the slot bottom, lay the tube socket pillow base in the little recess, lay pipeline on the tube socket pillow base, basic bed course top is equipped with the support barricade, the support barricade of both sides has formed the cavity with the basic bed course, cast into the pipeline of encapsulating in above-mentioned cavity with foam cement light soil, it is equipped with the geotechnological bag of paving to support barricade and slot side slope within a definite time, still including covering the roof that bears who supports the barricade top. The utility model discloses near mainly used solves near pipeline in the current urban road work progress and takes place to warp and destroy and be difficult to the problem of protection, can carry out effectual deformation control and protection to near pipeline of road construction, and this protection system is the same with the pipeline structure life-span, and construction convenience is quick to have certain waterproof, shock attenuation guard action concurrently.

Description

Deformation protection structure of underground pipeline

Technical Field

The utility model relates to an underground pipeline technical field specifically is an underground pipeline's deformation protection architecture.

Background

In recent years, with the rapid development of Chinese urbanization, urban road buildings are more and more dense, and corresponding underground pipe networks are also more and more dense; the condition that leads to the underground pipeline to take place the displacement destruction often takes place during current town road construction operation.

When a city subway station is built on a municipal road, the underground pipeline is often close to a subway station foundation pit or traverses the station, so that during the excavation of the foundation pit, the displacement state and the stress state of the surrounding soil body are changed due to stratum loss caused by soil body unloading, and the adjacent underground pipeline is extruded by the surrounding soil body; when the underground pipeline is buried close to a subway station foundation pit, the underground pipeline is easy to deform and damage under the condition of foundation pit excavation construction, and therefore the deformation protection structure of the underground pipeline can solve the problem that the underground pipeline is difficult to protect due to deformation and damage of the adjacent pipeline in the existing urban road construction process.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pipeline's deformation protection architecture to near pipeline takes place to warp and destroys and is difficult to the problem of protection in solving current urban road work progress.

In order to achieve the above object, the utility model provides a following technical scheme:

a deformation protection structure of an underground pipeline comprises a roadbed soil layer, a trapezoidal groove dug downwards along the roadbed surface of the upper surface of the roadbed soil layer and a groove bottom surface positioned at the bottom of the trapezoidal groove;

a plurality of sections of underground pipelines are uniformly laid in the trapezoidal groove, and every two adjacent underground pipelines are connected through pipeline joints;

pipe seat pillow bases corresponding to the number of the underground pipelines are uniformly distributed at the center of the bottom surface of the groove at equal intervals along the axial direction of the underground pipelines, the pipe seat pillow bases are arranged at the middle section of each section of the underground pipeline, the upper surfaces of the pipe seat pillow bases are matched with the underground pipelines, small grooves are dug downwards at the positions of the bottom surface of the groove corresponding to the pipe seat pillow bases, and the bottom surfaces of the pipe seat pillow bases are arranged in the small grooves and are matched with the small grooves;

a foundation cushion layer is laid on the bottom surface of the groove, a supporting retaining wall perpendicular to the foundation cushion layer is fixed on one side of the foundation cushion layer close to the underground pipeline, and the foundation cushion layer and the supporting retaining wall are symmetrically arranged on two sides of the pipe seat pillow base;

a reinforcing mesh is laid on the upper surface of the bottom surface of the groove along the axial direction of the underground pipeline, the reinforcing mesh is of a right-angle structure, and the foundation cushion layer and the supporting retaining wall are both formed by pouring reinforcing mesh mixed concrete;

the utility model discloses a road surface elevation, including the retaining wall, the retaining wall is equipped with the bearing roof on the supporting wall, the bearing roof is located pipeline top, bears the roof and supports to form between the retaining wall and can hold pipeline's cavity, and the space filling that the cavity is except pipeline has foam cement light soil, just is in it has the geotechnological bag to support to fold between retaining wall and the trapezoidal slot slope, geotechnological bag and bearing roof top backfill have original state soil until road surface elevation.

As a further aspect of the present invention: the foundation cushion layer, the supporting retaining wall, the pipe seat pillow base and the bearing top plate are all reinforced concrete prefabricated parts.

As a further aspect of the present invention: one side of the supporting retaining wall is tightly attached to the pipe seat pillow base.

As a further aspect of the present invention: the filling height of the foam cement light soil is lower than that of the top of the supporting retaining wall, namely, a gap is reserved between the bearing top plate and the foam cement light soil.

As a further aspect of the present invention: convex barrier strips are symmetrically fixed on the lower surface of the bearing top plate and clamped on the inner side of the supporting retaining wall.

As a further aspect of the present invention: the convex barrier strips are immersed in the foam cement light soil.

As a further aspect of the present invention: the reinforcing mesh in the supporting retaining wall extends upwards along the top surface of the foundation mat until the reinforcing mesh is flush with the top surface of the supporting retaining wall.

A construction method of a deformation protection structure of an underground pipeline is characterized by comprising the following steps: the construction method comprises the following steps:

determining the position of an underground pipeline to be laid according to a design drawing, and excavating a trapezoidal groove in a roadbed soil layer along the length direction of the underground pipeline;

tamping the bottom surface of the groove, excavating a small groove in the middle of the bottom surface of the groove, and placing a prefabricated pipe seat pillow base in the small groove;

step three, placing the bound reinforcing mesh on the bottom surface of the groove, and binding the reinforcing mesh supporting the retaining wall on two sides of the pipe seat pillow base along the length direction of the pipeline;

pouring concrete on the bottom surface of the groove, and curing to form a foundation cushion layer;

fifthly, pouring the supporting retaining wall on the foundation cushion layer by mixing the concrete and the reinforcing mesh;

step six, splicing and placing the underground pipelines on a pipe seat pillow base, pouring foam cement light soil in a cavity formed by a foundation cushion layer and a supporting retaining wall, and encapsulating the whole underground pipeline by the foam cement light soil;

step seven, covering the prefabricated bearing top plate on the supporting retaining wall;

step eight, fully paving a soil engineering bag between the groove side slope and the supporting retaining wall on the foundation cushion layer;

and step nine, backfilling undisturbed soil on the bearing top plate and the soil engineering bags to the elevation of the roadbed surface.

As a further aspect of the present invention: in the fourth step and the fifth step, concrete for pouring the foundation mat layer is specifically C10 concrete, and concrete for pouring the supporting retaining wall is specifically C15 concrete.

Has the beneficial effects that:

1. the utility model is characterized in that the raised underground pipeline is arranged on the tube seat pillow base, so that foam cement light soil is poured around the underground pipeline to wrap the underground pipeline to form a protective layer structure with higher strength, the supporting retaining wall and the bearing top plate form a stable concrete supporting structure, the bearing top plate is used for bearing the load from the soil body above and transmitting the load to the foundation cushion layer through the supporting retaining wall, thereby preventing the underground pipeline from being directly loaded, the soil engineering bags piled at two sides of the trapezoidal groove are used as the transition layers of the side slope soil body and the supporting retaining wall, certain radial deformation of the soil at the side surface can be allowed during road construction, the soil body is prevented from directly extruding the underground pipeline to generate horizontal displacement, the underground pipeline is effectively protected, and simultaneously the foam cement light soil is poured in the cavity formed by the foundation cushion layer and the supporting retaining wall, so that the concrete supporting structure and the foam cement light soil form a protective structure with higher integrity, the influence of local settlement is not easy to be received, so that the underground pipeline can not be deformed and damaged due to vertical displacement of the soil body.

2. The utility model provides a pipeline's deformation protection architecture and construction method can carry out effectual deformation control and protection to near the pipeline of road construction, and this protection system is the same with pipeline structure life-span, and construction convenience is quick to have certain waterproof, shock attenuation guard action concurrently.

Drawings

FIG. 1 is a schematic longitudinal sectional view of the present invention;

FIG. 2 is a schematic cross-sectional view of a-a in FIG. 1;

FIG. 3 is a schematic cross-sectional view of b-b in FIG. 1;

FIG. 4 is a schematic cross-sectional structure diagram of the third construction step of the present invention;

in the figure: 1. a roadbed soil layer; 2. an underground pipeline; 3. a tube seat pillow base; 4. a small groove; 5. a trench bottom surface; 6. a base mat layer; 7. supporting the retaining wall; 8. foam cement light soil; 9. a load bearing top plate; 10. a convex barrier strip; 11. a soil engineering bag; 12. undisturbed soil; 13. a roadbed surface; 14. a reinforcing mesh; 15. a pipeline joint.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a following technical scheme:

as shown in fig. 1-4, a deformation protection structure for underground pipelines comprises a roadbed soil layer 1, a trapezoidal groove dug downwards along a roadbed 13 on the upper surface of the roadbed soil layer 1, and a groove bottom surface 5 positioned at the bottom of the trapezoidal groove;

specifically, as shown in fig. 1, a plurality of sections of underground pipelines 2 are uniformly laid in a trapezoidal groove, two adjacent underground pipelines 2 are connected through pipeline joints 15, and two separated sections of pipelines are connected together through the pipeline joints 15, so that the stability of the whole pipeline system can be greatly improved, and meanwhile, a part of underground pipelines 2 can be prevented from deforming;

as shown in fig. 1-2, the pipe seat pillow bases 3 corresponding to the number of the underground pipelines 2 are uniformly distributed at the center of the bottom surface of the trench along the axial direction of the underground pipelines 2 at equal intervals, the pipe seat pillow bases 3 are arranged at the middle position of each section of the underground pipelines 2, the underground pipelines 2 can be supported by the pipe seat pillow bases 3, and the pipe seat pillow bases 3 are arranged at the middle position of each section of the underground pipelines 2, so that the underground pipelines 2 cannot be easily deformed under the action of longitudinal extrusion force, if the pipe seat pillow bases 3 are arranged in a position offset manner, the underground pipelines 2 are easily inclined integrally under the action of external force, the underground pipelines 2 are easily disconnected from the pipeline joints 15, the connection system of the whole pipeline is damaged, the upper surfaces of the pipe seat pillow bases 3 are matched with the underground pipelines 2, and small grooves 4 are excavated downwards at the positions of the bottom surface of the trench corresponding to the pipe seat pillow bases 3, the bottom surface of the tube seat pillow base 3 is arranged in the small groove 4 and is matched with the small groove 4, in the practical construction process of the utility model, the tube seat pillow base 3 can be limited by the arrangement of the small groove 4 by downwards excavating the small groove 4 and putting the bottom of the tube seat pillow base 3 into the small groove 4, so that the tube seat pillow base 3 is prevented from being displaced under the action of external force;

as shown in fig. 2-3, a foundation bed 6 is laid on the trench bottom surface 5, a supporting retaining wall 7 perpendicular to the foundation bed 6 is fixed on one side of the foundation bed 6 close to the underground pipeline 2, the foundation bed 6 and the supporting retaining wall 7 are symmetrically arranged on two sides of the pipe seat pillow 3, one side of the supporting retaining wall 7 is tightly attached to the pipe seat pillow 3, and the supporting retaining wall 7 is seamlessly connected with the side of the pipe seat pillow 3 at the underground pipeline 2 with the pipe seat pillow 3, so that the whole protection structure has a better protection effect on the pipeline;

as shown in fig. 4, a reinforcing mesh 14 is laid on the upper surface of the trench bottom surface 5 along the axial direction of the underground pipeline 2, the reinforcing mesh 14 is of a right-angle structure, the foundation bed 6 and the retaining wall 7 are both formed by pouring concrete mixed with the reinforcing mesh 14, the reinforcing mesh 14 in the retaining wall 7 extends upwards along the top surface of the foundation bed 6 until the top surface is flush with the top surface of the retaining wall 7, the arrangement is such that the reinforcing mesh 14 can be laid on the foundation bed 6 and the retaining wall 7 so as to improve the bearing capacity of the foundation bed 6 and the retaining wall 7, and the foundation bed 6 and the retaining wall 7 can be connected through the reinforcing mesh 14 due to the integral formation of the reinforcing mesh 14;

as shown in fig. 2-3, the supporting retaining wall 7 is covered with a bearing top plate 9, the foundation pad 6, the supporting retaining wall 7, the tube seat pillow 3 and the bearing top plate 9 are all reinforced concrete prefabricated members which can be formed by mixing and pouring concrete and a reinforced structure through a mold, the forming is convenient and the stability is high, meanwhile, the foundation pad 6 is used as a stable base layer at the bottom of the trapezoidal groove and bears the load action from above, the vertical settlement displacement is not easy to generate, the reinforced concrete prefabricated members have the characteristic of high structural strength, so that the supporting and protecting structure of the pipeline is more stable, the bearing top plate 9 is positioned above the underground pipeline 2, a cavity capable of accommodating the underground pipeline is formed between the bearing top plate 9 and the supporting retaining wall 7, the space of the cavity except the underground pipeline 2 is filled with foam cement light soil 8, and a geotextile bag 11 is stacked between the supporting retaining wall 7 and the slope of the trapezoidal groove, undisturbed soil 12 is backfilled above the earth work bag 11 and the bearing top plate 9 until the level of a roadbed surface 13 is raised, in the utility model, the raised underground pipeline 2 is arranged on the pipe seat pillow base 3, so that the foam cement light soil 8 is poured around the underground pipeline 2 to wrap the underground pipeline to form a protective layer structure with higher strength, the supporting retaining wall 7 and the bearing top plate 9 form a stable concrete supporting structure, the bearing top plate 9 is used for bearing the load from the soil body above, and the load is transferred to the foundation bed course 6 through the supporting retaining wall 7, so that the underground pipeline 2 is prevented from being directly loaded, the soil engineering bags piled on the two sides of the trapezoidal groove are used as transition layers of the side slope soil body and the supporting retaining wall 7, the lateral soil can be allowed to have certain radial deformation during road construction, so that the underground pipeline 2 is prevented from being directly extruded by the soil body to generate horizontal displacement, and the underground pipeline 2 is effectively protected;

meanwhile, the dry bulk density of the poured foam cement light soil 8 is 300-1600kg/m3, compared with the traditional backfill soil, the whole protection system is very light, the influence of local settlement of the underground pipeline 2 and the soil body caused by the self gravity of the backfill soil is reduced, the water absorption of the foam cement light soil 8 is small, the foam cement light soil 8 has certain waterproof performance due to good integrity, the underground pipeline 2 can be effectively protected from being eroded by underground water in a stratum containing the underground water, and the foam cement light soil 8 can play a certain role in shock absorption due to the porosity of the foam cement light soil 8.

The filling height of the foam cement light soil 8 is lower than the top of the supporting retaining wall 7, namely, a gap is reserved between the bearing top plate 9 and the foam cement light soil 8, the arrangement is such that the gap is reserved between the bearing top plate 9 and the foam cement light soil 8, when the bearing top plate 9 bears the load from the upper soil body, the load can be only transmitted to the foundation cushion layer 6 through the supporting retaining wall 7 in contact with the load, the load can not be transmitted to the foam cement light soil 8, the load can not be transmitted to the underground pipeline 2, and the underground pipeline 2 is better protected.

Convex barrier strips 10 are symmetrically fixed on the lower surface of the bearing top plate 9, the convex barrier strips 10 are clamped on the inner side of the supporting retaining wall 7, the convex barrier strips 10 are immersed in the foam cement light soil 8, the bearing top plate 9 is immediately placed after the foam cement light soil 8 is poured, the convex barrier strips 10 are immersed in the foam cement light soil 8, the bearing top plate 9 is clamped through the limiting effect of the convex barrier strips 10 of the bearing top plate 9, the convex barrier strips 10 are immersed in the foam cement light soil 8, the foam cement light soil 8 is enabled to fill gaps between the convex barrier strips 10 and the inner wall of the supporting retaining wall 7, the bearing top plate 9 is fixed through the cementing effect of the convex barrier strips 10 and the foam cement light soil 8, and the protection structure of the underground pipeline 2 is enabled to be more stable.

A construction method of a deformation protection structure of an underground pipeline comprises the following steps:

step one, determining the position of an underground pipeline 2 to be laid according to a design drawing, and excavating a trapezoidal groove in a roadbed soil layer 1 along the length direction of the underground pipeline 2;

tamping the bottom surface 5 of the groove, excavating a small groove 4 in the middle of the bottom surface 5 of the groove, and placing the prefabricated pipe seat pillow base 3 in the small groove 4;

step three, placing the bound reinforcing mesh 14 to the bottom surface 5 of the groove, and binding the reinforcing mesh 14 supporting the retaining wall 7 at the two sides of the pipe seat pillow base 3 along the length direction of the underground pipeline 2;

pouring C10 concrete on the bottom surface of the groove, and curing to form a foundation cushion layer 6;

step five, pouring the supporting retaining wall 7 on the foundation mat 6 by mixing C15 concrete and the reinforcing mesh 14;

sixthly, splicing and placing the underground pipelines 2 on a pipe seat pillow base 3, pouring foam cement light soil 8 in a cavity formed by a foundation cushion layer 6 and a supporting retaining wall 7, and encapsulating the whole underground pipeline 2 by the foam cement light soil 8;

step seven, covering the prefabricated bearing top plate 9 on the supporting retaining wall 7;

step eight, fully paving a geotextile bag 11 between the groove side slope and the supporting retaining wall 7 on the foundation mat 6;

and step nine, backfilling undisturbed soil 12 on the bearing top plate 9 and the soil engineering bags 11 to the elevation of a roadbed surface 13.

By adopting the technical scheme, the utility model can effectively control and protect the deformation of the pipeline near the road construction, the service life of the protection system is the same as that of the pipeline structure, and the construction is convenient and quick; and has certain waterproof and shock absorption protection functions.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not exhaustive and do not limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims (7)

1. The utility model provides a protection architecture that warp of underground piping which characterized in that: the road foundation structure comprises a road foundation soil layer (1), a trapezoidal groove dug downwards along a road foundation surface (13) on the upper surface of the road foundation soil layer (1) and a groove bottom surface (5) positioned at the bottom of the trapezoidal groove;

a plurality of sections of underground pipelines (2) are uniformly laid in the trapezoidal groove, and every two adjacent underground pipelines (2) are connected through pipeline joints (15);

pipe seat pillow bases (3) corresponding to the number of the underground pipelines (2) are uniformly distributed in the center of the bottom surface of the groove along the axial direction of the underground pipelines (2) at equal intervals, the pipe seat pillow bases (3) are arranged at the middle section of each section of the underground pipelines (2), the upper surfaces of the pipe seat pillow bases (3) are matched with the underground pipelines (2), small grooves (4) are dug downwards at the positions, corresponding to the pipe seat pillow bases (3), of the bottom surface of the groove, and the bottom surfaces of the pipe seat pillow bases (3) are arranged in the small grooves (4) and are matched with the small grooves (4);

a foundation mat (6) is laid on the bottom surface (5) of the trench, a supporting retaining wall (7) which is perpendicular to the foundation mat (6) is fixed on one side of the foundation mat (6) close to the underground pipeline (2), and the foundation mat (6) and the supporting retaining wall (7) are symmetrically arranged on two sides of the pipe seat pillow base (3);

the reinforcement mat (14) is laid on the upper surface of the groove bottom surface (5) along the axial direction of the underground pipeline (2), the reinforcement mat (14) is of a right-angle structure, and the foundation cushion layer (6) and the supporting retaining wall (7) are both formed by pouring concrete mixed with the reinforcement mat (14);

support barricade (7) to coat and have and bear roof (9), bear roof (9) and be located pipeline (2) top, bear roof (9) and support and form the cavity that can hold pipeline between barricade (7), the space filling of cavity except pipeline (2) has foam cement light soil (8), and is in it has geotechnological bag (11) to stack up between barricade (7) and the trapezoidal slot side slope, geotechnological bag (11) and bear roof (9) top backfill have undisturbed soil (12) until road base face (13) elevation.

2. The deformation protection structure for an underground pipeline according to claim 1, wherein: the foundation pad layer (6), the supporting retaining wall (7), the tube seat pillow base (3) and the bearing top plate (9) are reinforced concrete prefabricated parts.

3. The deformation protection structure for an underground utility according to claim 1, wherein: and one side of the supporting retaining wall (7) is tightly attached to the pipe seat pillow base (3).

4. The deformation protection structure for an underground pipeline according to claim 1, wherein: the filling height of the foam cement light soil (8) is lower than the top of the supporting retaining wall (7), namely, a gap is reserved between the bearing top plate (9) and the foam cement light soil (8).

5. The deformation protection structure for an underground utility according to claim 1, wherein: convex barrier strips (10) are symmetrically fixed on the lower surface of the bearing top plate (9), and the convex barrier strips (10) are clamped on the inner side of the supporting retaining wall (7).

6. The underground utility model discloses a deformation protection structure of claim 5, characterized in that: the convex barrier strips (10) are immersed in the foam cement light soil (8).

7. The deformation protection structure for an underground utility according to claim 1, wherein: the reinforcing mesh (14) in the supporting retaining wall (7) extends upwards along the top surface of the foundation mat (6) until the top surface is flush with the top surface of the supporting retaining wall (7).

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