CN218404882U

CN218404882U - Drainage structure for improving stability of silt stratum roadbed

Info

Publication number: CN218404882U
Application number: CN202222448310.2U
Authority: CN
Inventors: 陈圣甜; 王玉山; 李萌; 路瑞强; 吕嘉; 吴丰; 张春生; 丁磊; 王子荣; 聂永臣
Original assignee: Beijing Municipal No3 Construction Project Co ltd; Beijing Municipal Road and Bridge Co Ltd
Current assignee: Beijing Municipal No3 Construction Project Co ltd; Beijing Municipal Road and Bridge Co Ltd
Priority date: 2022-09-15
Filing date: 2022-09-15
Publication date: 2023-01-31
Anticipated expiration: 2032-09-15

Abstract

The application discloses improve drainage structures of silt stratum roadbed stability, its technical scheme main points are that drainage structures who improves silt stratum roadbed stability includes the drainage sand bed course, is provided with double-deck vertical and horizontal blind pipe in the drainage sand bed course, and the blind pipe adopts and adds the muscle soft pipe of permeating water, and the blind pipe is provided with bearing structure outward, and the junction of blind pipe is provided with the sump pit with great ease, is provided with the immersible pump in the sump pit. This application has been solved at the heap load pressurization in-process, and the sand cushion can produce the inhomogeneous settlement of wave formula, arouses the blind pipe to buckle, causes the blind pipe disconnection, blocks up the scheduling problem to the junction of blind pipe is ponding easily with great ease, thereby makes the moisture in the sand cushion can not in time discharge, influences the problem of the effect that the soft base was handled.

Description

Drainage structure for improving stability of silt stratum roadbed

Technical Field

The application relates to the technical field of roadbed drainage, in particular to a drainage structure for improving stability of a sludge stratum roadbed.

Background

Roads constructed in southern China and coastal cities face the problems of poor soil geology, rich underground water content and the like, and particularly, the road constructed on a sludge stratum can cause large uneven settlement of a roadbed, and can cause road diseases such as road surface fracture, up-and-down fluctuation, vehicle jumping and the like.

At present, a drainage consolidation method is generally adopted for soft foundation treatment of a silt stratum, specifically, a vertical drainage structure is arranged in the silt stratum, a drainage sand cushion layer is arranged above the silt stratum, water in the silt stratum enters the drainage sand cushion layer in a stacking and pressurizing mode, and the water is discharged into drainage ditches on two sides of a roadbed through blind pipes in the sand cushion layer.

Aiming at the related technologies, the inventor thinks that during the process of loading and pressurizing, the sand cushion layer can generate wave-type uneven settlement to cause the bending of the blind pipe and cause the problems of the disconnection and blockage of the blind pipe, and the junction of the longitudinal blind pipe and the transverse blind pipe is easy to accumulate water, so that the moisture in the sand cushion layer can not be discharged in time, and the effect of soft foundation treatment is influenced.

SUMMERY OF THE UTILITY MODEL

In order to make moisture in the sand cushion layer discharge in time, guarantee the effect that soft base was handled, this application provides a drainage structures who improves silt stratum road bed stability.

The application provides a drainage structures who improves silt stratum road bed stability adopts following technical scheme:

the utility model provides an improve drainage structures of silt stratum roadbed stability, includes drainage sand bed course, is provided with vertical and horizontal blind pipe in the drainage sand bed course, and the blind pipe is provided with bearing structure outward, and the junction of blind pipe is provided with the sump pit with great ease, is provided with the immersible pump in the sump pit.

By adopting the technical scheme, the problem that the blind pipe is disconnected and blocked due to deformation of the blind pipe in the preloading process is solved by arranging the supporting structure outside the blind pipe; through setting up sump pit and immersible pump, the moisture that the blind pipe junction of drawing vertically and horizontally assembled guarantees that the moisture in the sand cushion can in time be discharged.

Preferably, the supporting structure comprises a top plate and a bottom plate, a plurality of groups of supporting rods which are arranged in a crossed mode are fixedly connected between the top plate and the bottom plate, and the blind pipes are fixed on the supporting rods.

By adopting the technical scheme, the vertical support is provided for the top plate and the bottom plate by arranging the crossed support rods, and the support structure cannot deform in the process of loading and pressurizing, so that the blind pipe cannot deform greatly.

Preferably, the blind pipes are arranged into an upper layer and a lower layer, two pipe hoops are symmetrically arranged on each group of supporting rods which are arranged in a crossed mode, the upper layer blind pipe is fixed in the pipe hoop on the upper portion, and the lower layer blind pipe is fixed in the pipe hoop on the lower portion.

Through adopting above-mentioned technical scheme, through setting up two-layer blind pipe for the efficiency of the drainage of absorbing water, through setting up the ferrule, realize blind pipe and bearing structure's fixed connection.

Preferably, a plurality of water permeable holes are uniformly distributed on the top plate and the bottom plate.

Through adopting above-mentioned technical scheme, make the moisture in the drainage sand bed course can pass through roof and bottom plate entering blind pipe, guarantee drainage efficiency.

Preferably, a connecting port for connecting a blind pipe is formed in the well wall at the bottom of the water collecting well, and the connecting part of the blind pipe and the well wall is fixed in a cement mortar smearing mode.

Through adopting above-mentioned technical scheme, realize the fixed connection of blind pipe and sump pit.

Preferably, the transverse blind pipes are inclined towards the two sides of the roadbed, and one ends, far away from the water collecting wells, of the transverse blind pipes extend into drainage ditches on the two sides of the roadbed.

Through adopting above-mentioned technical scheme, make moisture in the horizontal blind pipe can discharge the escape canal in, prevent to gather moisture in the blind pipe, influence drainage efficiency.

Preferably, the blind pipe adopts a reinforced soft permeable pipe.

By adopting the technical scheme, the blind pipe can partially deform when bearing external force, but cannot break, and the structural safety of the blind pipe is further ensured.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the supporting structure arranged outside the blind pipe prevents the blind pipe from deforming to cause the disconnection and blockage of the blind pipe in the process of preloading; the water collecting well and the submersible pump are arranged to extract water gathered at the junction of the longitudinal blind pipe and the transverse blind pipe, so that the water in the sand cushion can be discharged in time;

2. the efficiency of water absorption and drainage is accelerated by arranging two layers of blind pipes, and the blind pipes are fixedly connected with the supporting structure by arranging pipe hoops;

3. through set up the hole of permeating water on top and bottom plate, make the moisture in the drainage sand bed course can pass through roof and bottom plate entering blind pipe, guarantee drainage efficiency.

Drawings

Fig. 1 is a schematic view of the overall structure of a drainage structure for improving the stability of a sludge formation subgrade in the embodiment of the application.

Fig. 2 is a schematic view showing an internal structure of a drainage structure for improving the subgrade stability of a sludge formation in the embodiment of the present application.

Description of reference numerals:

1. a draining sand cushion layer; 2. a blind pipe; 21. a transverse blind pipe; 22. a longitudinal blind pipe; 3. a support structure; 31. a top plate; 32. a base plate; 33. a support bar; 34. a pipe hoop; 35. water permeable holes; 4. a water collecting well; 5. filling soil into the roadbed; 6. a silt formation.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

The embodiment of the application discloses a drainage structure for improving stability of a sludge stratum roadbed. Referring to fig. 1 and 2, the drainage structure for improving the stability of the sludge stratum roadbed comprises a drainage sand cushion layer 1, wherein a double-layer longitudinal and transverse blind pipe 2 is arranged in the drainage sand cushion layer 1, the blind pipe 2 adopts a reinforcement soft permeable pipe, a supporting structure 3 is arranged outside the blind pipe 2, a water collecting well 4 is arranged at the intersection of the longitudinal and transverse blind pipes, and a submersible pump is arranged in the water collecting well 4. The supporting structure 3 arranged outside the blind pipe 2 prevents the blind pipe 2 from deforming to cause the problems of disconnection and blockage of the blind pipe 2 in the process of preloading; through setting up sump pit 4 and immersible pump, the moisture that assembles is moved about freely and quickly blind pipe 2 junction to the extraction, guarantees that the moisture in the sand cushion can in time be discharged.

The drainage sand cushion layer 1 is arranged between the silt stratum 6 and the roadbed filling 5, the longitudinal blind pipes 22 are arranged in the drainage sand cushion layer 1 along the length direction of the road, the transverse blind pipes 21 are arranged in the drainage sand cushion layer 1 along the width direction of the road, and the transverse blind pipes 21 are inclined towards the two sides of the roadbed. The water collecting well 4 is arranged in the center of the drainage sand cushion layer 1, and a connecting port for connecting the blind pipe 2 is arranged on the well wall at the bottom of the water collecting well 4. Two ends of the longitudinal blind pipe 22 extend into the connecting ports of two adjacent water collecting wells 4, one end of the transverse blind pipe 21 extends into the connecting ports of the water collecting wells 4, the other end of the transverse blind pipe extends into drainage ditches on two sides of the roadbed, and the connecting part of the blind pipe 2 and the wall of the water collecting well 4 is fixed in a cement mortar smearing mode. The bottom of the water collecting well 4 is provided with a submersible pump, and water in the water collecting well 4 is pumped out from a well mouth through the submersible pump.

Supporting structure 3 includes roof 31, bottom plate 32, and evenly distributed has a plurality of holes 35 of permeating water on roof 31 and the bottom plate 32, and the rigid coupling has the bracing piece 33 of a plurality of groups cross arrangement between roof 31 and the bottom plate 32, and the symmetry is provided with two ferrule 34 on each group bracing piece 33, and during upper blind pipe 2 was fixed in the ferrule 34 on upper portion, lower floor's blind pipe 2 was fixed in the ferrule 34 of lower part.

In the process of preloading, moisture in the silt stratum 6 can enter the drainage sand cushion layer 1, the moisture can be further absorbed into the blind pipe, the moisture in the transverse blind pipe 21 can be discharged into drainage ditches on two sides of the roadbed, and the moisture in the longitudinal blind pipe 22 can flow into the water collecting well 4 and be pumped away by the submersible pump. In the pressurizing process, due to the supporting effect of the supporting structure 3, the blind pipe 2 cannot be deformed too much, so that the normal work of the blind pipe 2 is ensured, and the moisture in the drainage sand cushion layer 1 can be discharged in time.

The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.

Claims

1. The utility model provides an improve drainage structures of silt stratum road bed stability which characterized in that: including drainage sand bed course (1), be provided with blind pipe (2) in drainage sand bed course (1), blind pipe (2) are provided with bearing structure (3) outward, blind pipe (2) are including horizontal blind pipe (21) and vertical blind pipe (22), horizontal blind pipe (21) with the intersection of vertical blind pipe (22) is provided with sump pit (4), is provided with the immersible pump in sump pit (4).

2. The drainage structure for improving the subgrade stability of a silt formation according to claim 1, wherein: the supporting structure (3) comprises a top plate (31) and a bottom plate (32), a plurality of groups of supporting rods (33) which are arranged in a cross mode are fixedly connected between the top plate (31) and the bottom plate (32), and the blind pipes (2) are fixed on the supporting rods (33).

3. The drainage structure for improving the subgrade stability of a silt formation according to claim 2, wherein: the blind pipe (2) is arranged into an upper layer and a lower layer, two pipe hoops (34) are symmetrically arranged on each group of supporting rods (33) which are arranged in a crossed mode, the upper layer blind pipe (2) is fixed in the pipe hoop (34) on the upper portion, and the lower layer blind pipe (2) is fixed in the pipe hoop (34) on the lower portion.

4. A drainage structure for improving the stability of a silt formation subgrade according to claim 2, wherein: a plurality of water permeable holes (35) are uniformly distributed on the top plate (31) and the bottom plate (32).

5. The drainage structure for improving the subgrade stability of a silt formation according to claim 2, wherein: a connecting port used for connecting the blind pipe (2) is formed in the well wall at the bottom of the water collecting well (4), and the connecting part of the blind pipe (2) and the well wall is fixed in a cement mortar smearing mode.

6. The drainage structure for improving the subgrade stability of a sludge formation according to claim 1, characterized in that: the horizontal blind pipes (21) are inclined towards the two sides of the roadbed, and one ends, far away from the water collecting wells (4), of the horizontal blind pipes (21) extend into drainage ditches on the two sides of the roadbed.

7. A drainage structure for improving the stability of a silt formation subgrade according to claim 2, wherein: the blind pipe (2) adopts a reinforced soft permeable pipe.