CN110792103A

CN110792103A - Underground pipeline with integrated supporting piles and pipeline wall and construction method

Info

Publication number: CN110792103A
Application number: CN201911087642.9A
Authority: CN
Inventors: 战福军
Original assignee: Nanjing Lianzhong Engineering Technology Co Ltd
Current assignee: Nanjing Lianzhong Engineering Technology Co Ltd
Priority date: 2019-11-08
Filing date: 2019-11-08
Publication date: 2020-02-14

Abstract

The invention discloses an underground pipeline integrating a support pile and a pipeline wall body, which comprises pipe joints consisting of a top plate, a bottom plate and two side plates, wherein adjacent pipe joints are spliced into a pipe gallery along the axial direction, and the lower ends of the two side plates extend downwards and are inserted into a soil foundation and serve as the support pile and the pipeline wall body. The steel plate knots replace the traditional supporting structure, not only play a role in supporting, but also serve as the side wall of the pipe gallery, greatly save the manufacturing cost, greatly reduce the construction amount and shorten the construction period.

Description

Underground pipeline with integrated supporting piles and pipeline wall and construction method

Technical Field

The invention relates to an underground pipeline and a construction method, in particular to an underground pipeline with a support pile and a pipeline wall body combined into a whole and a construction method.

Background

The existing underground large-caliber pipe gallery, particularly the rectangular pipe gallery, is mostly of a reinforced concrete structure. The method is characterized in that a foundation pit is excavated generally, wherein the foundation pit is excavated through pile supporting and slope setting without pile supporting. And after the foundation pit construction is finished, starting the building construction of the pipe gallery in the foundation pit, tying reinforcing steel bars by the supporting template, pouring concrete and the like. And after the concrete strength reaches the standard, carrying out earthwork backfilling on two sides of the pipe gallery and the earthwork backfilling on the top of the pipe. Most of the installation methods of underground pipe galleries have the defects of long construction period, high construction cost, large influence on surrounding structures and the like.

Disclosure of Invention

The purpose of the invention is as follows: the invention aims to provide an underground pipeline and a construction method which are convenient to construct, short in construction period and high in strength and combine a support pile and a pipeline wall into a whole.

The technical scheme is as follows: the utility model provides a fender pile and pipeline wall unites two into one underground pipeline, includes the tube coupling of compriseing roof, bottom plate and both sides board, and adjacent tube coupling splices into the piping lane along the axial, both sides board lower extreme downwardly extending inserts in the soil matrix, acts as fender pile and pipeline wall simultaneously. The top plate, the side plates and the bottom plate are steel plates.

The top plate, the side plates and the bottom plate are flat steel plates or corrugated steel plates.

And the adjacent side plates are hermetically connected through flanges.

Two side edges of the bottom plate and the top plate are respectively connected with a flange sheet which is respectively vertical to the bottom plate and the top plate; the bottom plate and the top plate are connected to the side plates through flange pieces respectively.

When the side plate is a corrugated steel plate, the flange plate is corrugated, and the corrugation radian of the flange is the same as that of the corrugated steel plate column.

The side plates are combined steel plates, an upper section side plate and a lower section side plate are arranged in the vertical direction, and the upper section side plate and the lower section side plate are connected in a detachable connection mode. Preferably, the connection is made by using a clamping plate and a bolt.

The floor and/or roof bows outwardly.

And a backfill layer is arranged on the upper part of the top plate.

And a concrete layer is arranged at the lower part of the bottom plate.

The invention discloses an underground pipeline construction method combining a support pile and a pipeline wall body, which is characterized by comprising the following steps of:

A. according to the design width of a pipe gallery, at least two rows of side plates are driven into a target land block in parallel;

B. excavating the soil foundation between each row of steel plates to the designed depth of the pipe gallery, hermetically connecting the adjacent side plates (2), and arranging cross braces between the parallel steel plates;

C. arranging a bottom plate at the bottom of the foundation pit, and connecting the bottom plate with the side plates in a sealing manner;

D. filling concrete into a gap between the bottom of the foundation pit and the bottom plate;

E. a top plate is arranged at the upper part of each side plate, the mounting height of the top plate is equal to the design height of the pipe gallery, and the top plate is hermetically connected with the side plates;

F. and filling backfill materials to the upper part of the top plate of the pipe gallery to be level with the ground.

And the connection mode of the adjacent side plates in the step B is flange connection.

The side plates are combined steel plates, an upper section side plate and a lower section side plate are arranged in the vertical direction, and the upper section side plate and the lower section side plate are connected in a detachable connection mode. Preferably, a clamping plate is used for connecting with the bolt.

In step E, the top plate is connected with the lower section side plate; after step E is performed, step F1 is performed: and (4) removing the bolts on the clamping plates and pulling out the upper section side plate.

Has the advantages that: compared with the prior art, the invention has the following remarkable advantages:

(1) according to the invention, the side plates extend downwards and are inserted into the soil foundation to replace the traditional supporting structure, so that the supporting effect is achieved, the side walls of the pipe gallery are used as the side walls, the manufacturing cost is greatly saved, the construction amount is greatly reduced, and the construction period is shortened.

(2) The bottom plate and the top plate are made of steel plates, so that compared with the traditional concrete pipe gallery in which the concrete pipe gallery or the side plate is made of steel plates and the bottom plate is made of concrete, the connection is more convenient, the sealing is easier and the sealing performance is stronger; the construction working face is small, the influence on surrounding foundations and structures is reduced, and the construction process is more environment-friendly.

(3) The pipe gallery has light weight and convenient transportation, and structural members of all parts can be transported in a long distance. Adopt this assembled structure, be convenient for carry out standardized production.

Drawings

FIG. 1 is a schematic process diagram of step A of the present invention;

FIG. 2 is a schematic process diagram of step B of the present invention;

FIG. 3 is a schematic process diagram of step C of the present invention;

FIG. 4 is a schematic structural view of the present invention;

fig. 5 is a schematic structural view of the assembled steel plate of the present invention.

Detailed Description

The technical scheme of the invention is further explained by combining the attached drawings.

The inventor researches different supporting modes to find that if the steel plate column is supported, the steel plate column needs to be pulled out, and if the pile cannot be pulled out, the pile body is remained in the foundation. Above-mentioned concrete pipe gallery duration, environmental protection problems such as dust, noise of building site construction are many, and it is great to the current influence around the building site, and is big to material demands such as grit. In addition, because of environmental protection problems, the price of concrete is more and more expensive, and the construction cost of the pipe gallery structure body is higher and higher.

If the foundation pit is a pile-free supporting slope-setting excavation foundation pit, the requirement of the slope-setting foundation pit on a field working surface is high in construction aspect, the excavation amount and the backfill amount are large, if the foundation pit is a drilled pile or a steel plate supporting foundation pit, the manufacturing cost is high, and the supporting structure body has large influence on a peripheral foundation and a peripheral structure. In addition, the construction period is long, and the personnel cost is high.

As shown in fig. 1, two rows of parallel side plates 2 are driven into a target land block 1 by a pile driver, the driving depth of the two rows of side plates is greater than the height of a pipe gallery, and the distance between the two rows of parallel side plates is equal to the design width of the pipe gallery. The two rows of steel plates are composed of a plurality of steel plate unit sheets, and flange surfaces and flange holes are arranged on the side edges of the steel plates.

And excavating the soil foundation between the two rows of steel plates, and arranging the cross braces 3 between the two rows of side plates when the bottom 4 of the soil foundation pit reaches a certain depth, as shown in figure 2. And in the excavation process or after excavation is finished, the flange surfaces and the flange holes on the adjacent side plates are utilized, and the adjacent side plates are hermetically connected by bolts.

The side plates can be flat steel plates or corrugated steel plates, and the strength and the lateral soil pressure resistance of the structure are improved.

After the foundation ditch reached the required degree of depth of this piping lane, set up the steel construction bottom plate 5 of piping lane bottom the foundation ditch, the both sides welding of bottom plate 5 has flange piece 6, flange piece and the perpendicular welding of steel sheet. The flange plate 6 is provided with a flange hole, the side plate is provided with a preformed hole corresponding to the flange hole, and the bottom plate 5 is connected with the corrugated steel plate through a bolt 7, as shown in figure 3. The connection face between flange piece 6 and curb plate 2 can set up the rubber pad, increases the leakproofness of piping lane. The bolts for connection can be bolts constructed in a one-way mode, and if ordinary bolts are adopted, nuts need to be welded on holes in the back face of the side plate in advance.

After the installation of the plurality of floors, concrete 12, which is foam concrete, is filled into the gap between the floor 5 and the base by means of a pipe.

A top plate 8 is provided on the upper portion of the side plate 2, and the top plate 8 is connected to the side plate 2 by bolts 10 in the same manner as the bottom plate, and the flange pieces 8 are welded to both sides of the top plate. The connection face between flange piece 8 and curb plate 2 can set up the rubber pad, increases the leakproofness of piping lane. The distance between the top plate and the bottom plate is equal to the design height of the pipe gallery.

The top plate 8 and the bottom plate 5 may be flat steel plates or corrugated steel plates. The top and

bottom plates

8, 5 may also be arched outward. Roof 8 and bottom plate 5 adopt when being connected along axial direction to be connected with the flange, are equipped with the sealed gasket of rubber between the flange, increase piping lane leakproofness.

After the top plate is installed, backfilling the foundation pit at the upper part of the top plate of the pipe gallery to the ground, and finishing the required buried pipe gallery engineering. The backfill layer 11 can be excavated earth materials, and can also be other backfill materials.

In the concrete implementation, a reinforcing rib can be arranged between the flange plate and the top plate or the bottom plate, so that the strength of the plate is increased, and the deformation of the plate in the connection process is prevented.

The steel plate may also be a sectional side plate 13, which is divided into two sections in the height direction, i.e., an upper section side plate 15 and a lower section side plate 14, as shown in fig. 5. The upper side plate 15 and the lower side plate 14 are provided with a clamp plate 16 and a bolt 17 outside to connect and fix the combined side plate 13. In the construction process of the combined corrugated side plate 13, the lower side plate 14 is connected with the top plate and the bottom plate to form a pipe joint. And after the top plate and the steel plate are connected and installed, removing the bolts on the clamping plates, backfilling the upper part of the top plate to the ground, and pulling out the upper section side plate 15. When the pre-buried degree of depth of piping lane is darker, can adopt combination formula curb plate 13, demolish the upper segment curb plate and can prevent the waste to steel, increased the intensity when the curb plate is squeezed into the soil matrix simultaneously.

The side plates 13 may be corrugated steel plates, and the corresponding clamping plates 16 may be corrugated, the shape of the corrugations corresponding to the shape of the corrugated steel plates.

The steel plate knots replace the traditional supporting structure, not only play a role in supporting, but also serve as the side wall of the pipe gallery, greatly save the manufacturing cost, greatly reduce the construction amount and shorten the construction period. The bottom plate and the top plate are made of steel plates, and compared with the traditional concrete pipe gallery or the pipe gallery with the concrete structure of which the side plate is made of steel plates and the bottom plate, the connection is more convenient, the sealing is easier and the sealing performance is stronger. The construction working face is small, the influence on surrounding foundations and structures is reduced, and the construction process is more environment-friendly. The pipe gallery has the advantages of strong sealing performance, light weight and convenient transportation, and structural members of all parts can be transported in a long distance. Adopt this assembled structure, be convenient for carry out standardized production.

Claims

1. A support pile and pipeline wall integrated underground pipeline comprises pipe joints formed by a top plate (8), a bottom plate (6) and two side plates (2), and adjacent pipe joints are spliced into a pipe gallery along the axial direction, and the underground pipeline is characterized in that the lower ends of the two side plates (2) extend downwards and are inserted into a soil foundation and serve as a support pile and a pipeline wall simultaneously; the top plate (8), the side plates (2) and the bottom plate (9) are steel plates.

2. The underground pipeline integrating the support pile and the pipeline wall body as one according to claim 1, wherein the side plates are combined side plates (13), an upper section side plate (15) and a lower section side plate (14) are arranged in the vertical direction, and the upper section side plate and the lower section side plate are connected in a detachable connection mode; the top plate (8) is connected with a lower section side plate (14).

3. A underpinning in combination with a piping wall according to claim 1, characterised in that the floor (6) and/or roof (8) are arched outwards.

4. A fender post and pipeline wall united underground pipeline according to claim 1, characterized in that the top plate (8), the bottom plate (6) and the two side plates (2) are straight steel plates.

5. A fender post and pipeline wall united underground pipeline according to claim 1, characterized in that the top plate (8), the bottom plate (6) and the two side plates (2) are corrugated steel plates.

6. The underground pipeline integrating the support piles and the pipeline wall body as one according to claim 1, wherein the two sides of the bottom plate (6) and the top plate (8) are respectively connected with flange pieces which are respectively vertical to the bottom plate and the top plate; the bottom plate (6) and the top plate (8) are respectively connected to the side plates (2) through flanges.

7. A support pile and pipeline wall combined underground pipeline as claimed in claim 5 or 6, wherein the flange plate is corrugated, and the corrugation radian of the flange is the same as that of the corrugated steel plate column.

8. The underground pipeline integrating the support pile and the pipeline wall body as claimed in claim 1, wherein a concrete layer is provided at the lower part of the bottom plate.

9. A fender pile and pipeline wall united underground pipeline according to claim 1, wherein a backfill layer is provided on the upper part of the top edge.

10. An underground pipeline construction method combining a support pile and a pipeline wall body is characterized by comprising the following steps:

A. according to the design width of a pipe gallery, two rows of side plates (2) are driven into a target land block (1) in parallel;

C. a bottom plate (5) is arranged at the bottom of the foundation pit and is hermetically connected with the side plate (2);

D. filling concrete (12) into a gap between the foundation pit bottom (4) and the bottom plate (5);

E. a top plate (8) is arranged at the upper part of each side plate, the installation height of the top plate (8) is equal to the design height of the pipe gallery, and the top plate is hermetically connected with the side plates;

F. and filling backfill materials (11) to the upper part of the top plate of the pipe gallery to be level with the ground.

11. An underground pipeline construction method by combining a support pile and a pipeline wall body as one according to claim 10, wherein the side plate is a combined side plate (13), an upper section side plate (15) and a lower section side plate (14) are arranged in the vertical direction, and the outer parts of the upper and lower section side plates are connected in a detachable connection mode.

12. A method of constructing an underground pipe by integrating a fender post with a pipe wall according to claim 11, wherein in step E, the top plate (8) is connected to a lower side plate (14); after step E is performed, step F1 is performed: and (3) removing the detachable connecting device and pulling out the upper section side plate (15).