KR101620787B1

KR101620787B1 - underground excavation construction method

Info

Publication number: KR101620787B1
Application number: KR1020150087272A
Authority: KR
Inventors: 신근식; 김현준
Original assignee: 현진이앤씨 주식회사; 신근식; 김현준
Priority date: 2015-06-19
Filing date: 2015-06-19
Publication date: 2016-05-23

Abstract

The object of the present invention is to connect a new underground channel to an existing underground manhole structure in order to connect a power line to an existing underground manhole structure, The present invention provides a method of connecting and installing existing underground manhole structures by using an unbonded method that can reduce the construction cost and reduce the construction cost by reducing the construction cost.

Description

[0001] The present invention relates to an underground excavation construction method for connecting an existing underground manhole structure by a non-

More particularly, the present invention relates to a method of connecting a new underground pipe (steel pipe) to an existing underground manhole structure by using a non-opening method, Construction of existing underground manhole structure by non-installation method that can reduce the construction cost by reducing the cost by constructing the road without blocking road traffic by making it possible to proceed with the propulsion method. &Lt; / RTI >

Generally, as a method of constructing a structure in the ground, there is a method of constructing a structure by opening and closing.

If it is necessary to install underground roads, tunnel structures, etc. by crossing existing roads and railways, it is not possible to transfer the obstacles due to construction work, do.

For the construction method of non-installation structure, forward bases and reaching bases of the concept of the work center are necessary for both sides of the road or obstacle crossing. Typical non-installation foundation construction methods are the chassis-traction method and the steel pipe loop method. have.

The armor pulling method is a method in which a steel pipe for supporting the enclosure of about 600 mm in advance is penetrated horizontally from a forward base to a reaching base and then a large number of steel pipes traversing the ground from the reaching base of the opposite side of the body to be towed Of the PC steel wire is bound to the body made in the field, and then pulled to remove the internal soil from the enclosure, and the structure is installed in the ground by repeating such traction and excavation work.

In addition, the steel pipe loop construction method is widely applied by the construction method of the non-slip type underground structure.

The steel pipe loop construction method is a method of constructing a steel pipe loop structure in which neighboring steel pipes are connected to each other in a mutually aligned state so that their lateral rigidity is secured and construction is possible without a separate transverse support beam, And is known as Patent Publication No. 2006-0097891.

As a technique related to a steel pipe loop structure, there is known a steel pipe loop structure of Korean Patent Registration No. 10-0737328, a construction method thereof, and a steel pipe loop structure of Korean Patent Registration No. 10-0770159.

Such a steel pipe loop structure is a steel pipe loop structure in which a work hole is provided on both sides of a road to be traversed or obstacle, and is sequentially press fitted into the outline of a structure to be installed. Horizontal grooves are horizontally formed on one side thereof, A plurality of supports are provided on the inner side of the groove at upper and lower portions with a predetermined distance therebetween so as not to be crushed by the horizontal grooves due to the load, and a plurality of steel pipes Are laterally coupled with each other in an aligned state.

As a method of pushing and pushing the steel pipes constituting the steel pipe loop structure into the ground, there are a method of pushing and pushing the steel pipe while excavating the ground by using a machine such as a bit, There is a method of pushing and pushing steel pipes as excavated after excavation.

On the other hand, when a new city is opened through urban development, etc., various pipes such as a water pipe, a gas pipe, a communication pipe, and a pipeline are buried underground by the above-described construction method of a non-installed structure. At this time, there is no need to restrict the traffic of the vehicle or the like, and it has an advantage that it does not hinder traffic.

However, when buried in the ground due to urban development, there are cases where buried steel pipe is connected to the existing underground manhole structure already installed. For example, in order to connect a power line to an existing underground manhole structure, a power line may be connected to an existing underground manhole structure so that the existing underground manhole structure can be connected to a steel pipe.

In this way, it is necessary to install an underground pipeline (steel pipe) in order to connect a new underground channel (steel pipe) to the existing underground manhole structure and to connect the power line in the existing underground manhole structure. Extension is required.

In this construction, since it is not possible to use the non-installation method until now, it is the situation that the construction is carried out after the traffic is controlled. In other words, since the existing manhole should be digged around the existing manhole structure for the expansion of the existing underground manhole structure, it could not be constructed only after controlling the road traffic and opening it.

Therefore, it is indispensable that the traffic is controlled and the work is performed at every predetermined interval, which causes a problem that the traffic is stagnant. In other words, traffic congestion time is inevitably increased due to repetitive traffic blockage, which causes problems such as traffic inconvenience, passenger complaints, and increased incidence of social indirect loss costs.

Korean Patent Laid-Open No. 10-2006-0097891, a steel pipe loop structure, and a method of constructing the steel pipe loop structure. Korean Patent Registration No. 10-0737328, Steel pipe loop structure and its construction method. Korean Patent Registration No. 10-0770159, Steel pipe loop structure.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method of connecting a new underground channel to an existing underground manhole structure in order to connect a power line to an existing underground manhole structure, , It is possible to reduce the construction cost and the construction cost by reducing the construction cost by eliminating the need to cut off road traffic by allowing the construction to proceed to the method of pressurizing the steel pipe by the method of the present invention. And to provide a method of constructing a connection.

In order to accomplish the above object, the present invention is characterized in that after a work hole is installed on one side of a road or obstacle to be traversed, a ground is excavated in accordance with the outline of a structure to be installed in the work hole, A first step of successively pushing and pushing the first steel pipe in a horizontal direction in a precise manner; A second step of sequentially pressing the second steel pipe vertically in the upper part so as to be connected to the lower part of the existing underground manhole structure inside the first steel pipe formed by the first step; And the second steel pipe in the vertical direction formed by the second step and the first steel pipe in the horizontal direction by the first step, the worker moves to the inside of the existing underground manhole structure and the bottom concrete of the existing underground manhole structure, And a third step of conveying the excavated soil and the lower material to the inside of the manhole structure or carrying the excavated soil and the construction material to the outside of the manhole structure and extending the new space portion to the lower part of the existing underground manhole structure to complete the vertical structure, : Crushing the floor concrete of the existing underground manhole structure; Dismantling the floor concrete of the existing underground manhole structure and disposing the earth retaining material while tearing the lower portion thereof; Excavation and installation of the existing underground manhole structure and demolition of the second steel pipe in the vertical direction and part of the first steel pipe in the horizontal direction are performed stepwise to excavate to the floor of the planned point to be connected to the lower part of the existing underground manhole structure step; And completing the vertical structure at the excavation site under the existing underground manhole structure by reinforcing machining assembly, formwork installation and remicon casting after completion of excavation to the floor of the planned site to be connected to the lower part of the existing underground manhole structure Do.

The second step is to push the second steel pipe in the vertical direction inside the first steel pipe in the horizontal direction and to horizontally push the second steel pipe to the lower side of the first steel pipe in the horizontal direction so as to be connected to the lower part of the existing underground manhole structure Installing a pedestal and a hydraulic jack; Mounting a steel pipe and a steel pipe to press the second steel pipe vertically by the hydraulic jack; The second steel pipe in the vertical direction is pushed outward from the inside of the first steel pipe in the horizontal direction by the pusher so that the upper portion of the first steel pipe in the horizontal direction is cut so as to be able to push into the lower portion of the existing underground manhole structure, Installing a vertical beam; And pushing and pushing the second steel pipe into the lower part of the existing underground manhole structure in such a manner that the second steel pipe in the vertical direction is positioned.

The size of cutting the first steel pipe for pushing in the second steel pipe is cut to a size corresponding to the diameter of the second steel pipe so as to support the cut portion by installing the vertical beam for bucket, It is preferable to push the second steel pipe through the cut portion while pushing the second steel pipe.

It is preferable that the diameter of the first steel pipe in the horizontal direction to be press-impregnated by the first step is larger than the diameter of the second steel pipe in the vertical direction which is press-impelled by the second step.

According to the present invention, when a new underground channel is connected to a conventional underground manhole structure to connect a power line to the existing underground manhole structure, it is connected to a steel pipe indentation propulsion method by a non- Therefore, it is not necessary to cut off road traffic separately, and the construction period can be shortened to reduce the construction cost.

FIG. 1 is a view showing an example of construction of an existing underground manhole structure connection installation and construction method by a non-installation method according to the present invention, and FIG.
FIG. 2 is a view showing a sectional structure of FIG. 1,
3 is a view showing a state in which a first steel pipe is press-fitted into a lower portion of an existing underground manhole structure by a conventional method of connecting and installing an existing underground manhole structure by the non-installation method according to the present invention,
Fig. 4 is a front sectional view of Fig. 3,
FIG. 5 is a cross-sectional view illustrating a state in which a second steel pipe is inserted into a lower portion of an existing underground manhole structure by the method of connecting and installing an existing underground manhole structure according to an embodiment of the present invention, FIG. 5 is a view showing a state in which the lower portion is press-
Fig. 6 is a front sectional view of Fig. 5,
FIG. 7 is a view showing an example of a method of crushing a floor concrete of a conventional underground manhole structure in a state in which a second steel pipe is press-fitted into a lower portion of an existing underground manhole structure by a conventional method of connecting and installing a conventional underground manhole structure by the non- And Fig.
Fig. 8 is a front sectional view of Fig. 7,
FIG. 9 is a view showing an example in which the bottom concrete of the existing underground manhole structure is crushed and then excavated by the existing underground manhole structure connection installation and construction method by the non-installation method according to the present invention, and FIG.
Fig. 10 is a front sectional view of Fig. 9,
11 is a view showing an example in which excavation is completed in order to form a new vertical structure in a lower part of an existing underground manhole structure by a conventional method of connecting and installing an existing underground manhole structure by a non-installation method according to the present invention,
Fig. 12 is a front sectional view of Fig. 11,
FIG. 13 is a view showing a state in which a new vertical structure is formed on a lower part of an existing underground manhole structure by a method of connecting and installing an existing underground manhole structure by the non-tearing method according to the present invention,
Fig. 14 is a front sectional view of Fig. 13,
Fig. 15 is a side sectional view of Fig. 13,
16 is a view illustrating a conventional method of connecting and installing a conventional underground manhole structure according to the present invention, in which a propelling device for press-fitting a second steel pipe into an upper portion of a first steel pipe, And Fig.
Fig. 17 is a side sectional view of Fig. 16,
18 to 22 show a method of connecting and installing an existing underground manhole structure according to an embodiment of the present invention by press-fitting a second steel pipe into an upper part of a first steel pipe which is press- , And Fig.
FIG. 23 is an enlarged view of the "A" part of FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Prior to the description of the present invention, the following specific structure or functional description is merely illustrative for the purpose of describing an embodiment according to the concept of the present invention, and embodiments according to the concept of the present invention may be embodied in various forms , And should not be construed as limited to the embodiments described herein.

In addition, embodiments according to the concept of the present invention can make various changes and have various forms, so that specific embodiments are illustrated in the drawings and described in detail herein. However, it should be understood that the embodiments according to the concept of the present invention are not intended to limit the present invention to specific modes of operation, but include all modifications, equivalents and alternatives falling within the spirit and scope of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a construction example of a conventional method of connecting and installing a conventional underground manhole by a non-installation method according to the present invention, and FIG. 2 is a view showing a sectional structure of FIG. 1

As shown in these drawings, in the case where a structure is buried in the ground according to the development of the present invention, a new ground pipe (P) is connected to an already existing underground manhole structure 104 to connect a power line L, (For example, steel pipe) to the existing underground manhole structure 104 can be connected to the existing underground manhole structure by the non-attaching method, so that the work can be performed without controlling the road traffic Feature.

The method for connecting and installing a conventional underground manhole structure according to the present invention is characterized in that after a work hole 102 is installed on one side of a road or obstacle to be traversed and the outline of the structure to be installed in the work hole 102 A first step of sequentially pressing the first steel pipe 100 horizontally to a planned point to be connected to a lower portion of the existing underground manhole structure 104 while excavating the ground according to the first step, A second step of sequentially pushing and pushing the second steel pipe 200 in the vertical direction so as to be connected to the lower part of the existing underground manhole structure 104 in the first steel pipe 100, The worker moves to the inside of the existing underground manhole structure 104 through the second steel pipe 200 in the direction of the first underground manhole structure 104 and the first steel pipe 100 in the horizontal direction by the first step,The third step of carrying the strand, the excavated soil and the sloped material at the lower part thereof, and carrying it to the inside of the manhole structure or carrying it out to the outside while completing the vertical structure 300 by expanding the new space part under the existing ground manhole structure 104 .

FIG. 3 is a view showing a state in which a first steel pipe is press-fitted into a lower portion of an existing underground manhole structure by a conventional method of connecting and installing an existing underground manhole structure by the non-installation method according to the present invention, 3 is a front sectional view of Fig. 3.

3 to 4 show a state where the first steel pipe 100 is pushed into the lower portion of the existing underground manhole structure 104 by the first step.

In the first step, a known steel pipe propulsion method may be used. However, the conventional steel pipe propulsion method has a problem that it is necessary to cut off the road traffic because the work hole must be formed in the existing underground manhole structure. However, the present invention is not limited to the existing underground manhole structure, The manhole structure 104 is not provided with a work hole and the work hole 102 is provided on the other side of the manhole structure 104 and the existing underground manhole structure 104 The first steel pipe 100 is pressed in succession in the horizontal direction in a precise manner until the planned point to be connected to the lower portion of the steel pipe 100. [

FIG. 5 is a perspective view showing the construction of a conventional underground manhole structure according to an embodiment of the present invention; FIG. 5 is a cross- FIG. 6 is a front sectional view of FIG. 5, and FIG.

5 to 6 show a state in which the second steel pipe 200 is press-fitted into the upper part of the first steel pipe 100 by the second step.

In the second step, the second steel pipe 200 is connected to the lower portion of the existing underground manhole structure 104 inside the first steel pipe 100 which is press-imprinted in the horizontal direction in the first step, And this will be described in detail with reference to Figs. 16 to 23. Fig.

FIG. 16 is a perspective view illustrating a conventional method for connecting and installing a conventional underground manhole structure according to an embodiment of the present invention, in which a second steel pipe is press- FIG. 17 is a side sectional view of FIG. 16, and FIG. 18 to FIG. 22 are views showing a conventional method of connecting and installing existing structures according to the present invention, FIG. 23 is an enlarged view of the portion "A" in FIG. 22; FIG. 23 is a view showing a state in which the second steel pipe is press-fitted upward from the inside of the first steel pipe which is press-

18, in order to press the second steel pipe 200 in the vertical direction inside the first steel pipe 100 in the horizontal direction so as to be connected to the lower portion of the existing underground manhole structure 104, A propelling bracket 302 and a hydraulic jack 304 are installed on the lower side of the first steel pipe 100 in the horizontal direction.

Thereafter, as shown in FIG. 19, the pusher 306 and the second steel pipe 200 are mounted so as to push the second steel pipe 200 in the vertical direction by the hydraulic jack 304, and as shown in FIG. 20, The second steel pipe 200 in the vertical direction is pushed outward from the inside of the first steel pipe 100 in the horizontal direction by the pusher 306 so as to be horizontally and horizontally inserted into the lower portion of the existing underground manhole structure 104 The upper portion of the first steel pipe 100 is cut (c), and the vertical beam 308 for blocking is installed (see Fig. 23)

The upper portion of the first steel pipe 100 is cut by the vertical beam 308 for blocking and the second steel pipe 200 is pressed through the cut portion to push the second steel pipe 200 The vertical pipe 308 is removed after the second steel pipe 200 is pushed into the lower concrete of the existing underground manhole structure 104 by pushing the second steel pipe 200 downward, So that the safety can be secured even if the second steel pipe is vertically pushed in.

The cutting c formed on the first steel pipe 100 is cut to a size corresponding to the diameter of the second steel pipe 200 so as to push the second steel pipe 200 to press the second steel pipe 200, So that the second steel pipe 200 can be press-fitted into the second steel pipe 200 while preventing the soil from flowing.

Meanwhile, as shown in FIGS. 21 to 22, the second steel pipe 200 is sequentially pressed in the vertical direction to push the second steel pipe 200 in the vertical direction to the lower portion of the existing underground manhole structure 104 . At this time, the method of pushing and pushing the second steel pipe 200 is to push the steel pipe pushing and pulling method in the horizontal direction in the vertical direction.

When the second steel pipe 200 is positioned below the existing underground manhole structure 104 as described above, the vertical structure 300 is formed by the third step. At this time, A third step of transporting concrete crushed materials, excavated soil, and building materials generated during the work in the first and second steel pipes 100 and 200 to the outside to have a vertex at which work can be performed without controlling road traffic .

FIG. 7 is a perspective view showing a state in which a second steel pipe is press-fitted into a lower part of an existing underground manhole structure by crushing a floor concrete of an existing underground manhole structure by the conventional method of connecting and installing a conventional underground manhole structure by the non- Fig. 8 is a front sectional view of Fig. 7; Fig.

As shown in the figure, when the second steel pipe 200 is positioned under the existing underground manhole structure 104 by the second step, the bottom concrete of the existing underground manhole structure 104 is crushed. At this time, the generated concrete crushing material can be transported to the outside through the first and second steel pipes 100 and 200, so that there is no need to control the road traffic on the ground of the existing underground manhole structure 104.

9 is a view showing an example in which the bottom concrete of the existing underground manhole structure is crushed and then excavated by the existing underground manhole structure connection construction and installation method according to the non-installation method according to the present invention, 9 is a front sectional view of Fig. 9.

As shown in the figure, after the bottom concrete of the existing underground manhole structure 104 is crushed, the earth retaining material 314 is installed while tearing down the bottom. At this time, it is also not necessary to control the road traffic on the ground by carrying the excavated soil and the building material through the first and second steel pipes 100, 200.

11 is a view showing an example in which excavation is completed in order to form a new vertical structure at a lower portion of an existing underground manhole structure by a conventional method of connecting and installing an existing underground manhole structure by the non-installation method according to the present invention And Fig. 12 is a front sectional view of Fig. 11.

As shown in the drawing, when the excavation and installation material 314 is installed on the lower part of the existing underground manhole structure 104, the removal of the second steel pipe 200 in the vertical direction and the part of the first steel pipe 100 in the horizontal direction It should be removed.

For example, since the size of the vertical structure 300 formed under the existing underground manhole structure 104 is larger than that of the first and second steel pipes 100 and 200, the first and second steel pipes 100 and 200 are removed, The lower part of the underground manhole structure 104 is excavated and the construction material 314 is installed to complete the excavation to the floor of the planned point to be connected.

13 is a view showing a state in which a new vertical structure is formed at a lower portion of an existing underground manhole structure by a conventional method of connecting and installing an existing underground manhole structure according to the present invention, Fig. 13 is a front sectional view of the display, and Fig. 15 is a side sectional view of the display of Fig.

As shown in the drawing, when the bottom excavation of the planned point to be connected to the lower part of the existing underground manhole structure 104 is completed, the portion excavated under the existing underground manhole structure 104 by reinforcing machining assembly, formwork installation, The structure 300 is completed.

At this time, the vertical structure 300 extended under the existing underground manhole structure 104 without controlling the road traffic on the ground by transporting reinforcing bars or formworks through the first and second steel pipes 100 and 200, Can be completed.

In order to easily implement the method according to the present invention, the diameter of the first steel pipe 100 in the horizontal direction, which is press-impregnated by the first step, is smaller than the diameter of the second steel pipe 200 in the vertical direction, As shown in FIG.

For example, the first steel pipe 100 should be formed to have a diameter of about 2,000 mm or more, which is a large diameter, by forming a pipe for installing a power line or the like due to the construction of a new city. The second steel pipe 200, May be formed to have a diameter of approximately 1,000 mm, which is a small diameter smaller than the diameter of the first steel pipe 100, by merely serving as a work passage for further forming the vertical structure 300 in the lower portion of the first steel pipe 100.

Accordingly, the present invention provides a method of connecting a new underground pipe (steel pipe) to an existing manhole in order to connect a power line to an existing manhole by a method of proceeding to a method of pressurizing a steel pipe by an unfitting method, The construction period can be shortened and the construction cost can be reduced.

The present invention has been accomplished by constructing an underground pipeline (steel pipe) by the method of the present invention so that it can not be constructed only by an open type in order to connect a new underground channel (steel pipe) to an existing underground manhole structure by the present method. It is a completely new method that can connect a new pipe (steel pipe) to existing underground manhole structure with non-installation type without controlling road traffic.

The method according to the present invention can be applied to all existing underground manhole structures, for example, a sewer pipe, an oil pipeline, a power pipe, a gas pipe, and the like when a connecting pipeline is required.

Although the present invention has been fully described in connection with the preferred embodiments thereof with reference to the accompanying drawings, it is to be understood that the present invention is not limited thereto. It is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

100 - first steel pipe 200 - second steel pipe
300 - vertical structure 302 - pedestal
304 - Hydraulic Jack 306 - Pusher
308 - Vertical beam for blocking

Claims

A work site 102 is installed on one side of a road or trail to be traversed and then excavated in accordance with the outline of a structure to be installed in the work site 102 to a planned site to be connected to a lower portion of the existing underground manhole structure 104 A first step of successively pushing and pushing the first steel pipe 100 in a horizontal direction in a precise manner;
A second step of sequentially pressing the second steel pipe 200 vertically in the upper part so as to be connected to the lower part of the existing underground manhole structure 104 in the first steel pipe 100 formed by the first step; And
The worker moves to the inside of the existing underground manhole structure 104 through the second steel pipe 200 in the vertical direction formed by the second step and the first steel pipe 100 in the horizontal direction by the first step, The bottom concrete of the manhole structure 104, the excavated soil and the sloped material at the bottom of the manhole structure 104 are transported to the inside of the manhole structure or taken out to the outside, and a new space is expanded at the bottom of the existing underground manhole structure 104, 300), the method comprising the steps of:
Wherein the third step comprises:
Crushing the bottom concrete of the existing underground manhole structure 104;
Dismounting the floor concrete of the existing underground manhole structure 104 and installing the earth retaining material 314 while dismantling the lower portion thereof;
The digging of the second steel pipe 200 in the vertical direction and the removal of a part of the first steel pipe 100 in the horizontal direction are performed step by step while installing the excavation and installation material 314 in the lower part of the existing underground manhole structure 104, Drilling to the bottom of the planned point to be connected to the lower portion of the structure 104; And
After completion of the excavation to the bottom of the planned site to be connected to the lower part of the existing underground manhole structure 104, a new vertical structure 300 is completed at the excavation site under the existing underground manhole structure by reinforcing machining assembly, formwork installation, step;
The method comprising the steps of: (a) providing a plurality of manholes to be connected to each other;

The method according to claim 1,
Said second step comprising:
The inner surface of the first steel pipe 100 in the horizontal direction is pressurized and inserted into the first steel pipe 100 in the vertical direction so that the second steel pipe 200 can be connected to the lower portion of the existing underground manhole structure 104. [ Installing a propelling bracket (302) and a hydraulic jack (304) horizontally on the lower side;
(306) and a second steel pipe (200) so as to push the second steel pipe (200) in the vertical direction by the hydraulic jack (304);
The second steel pipe 200 in the vertical direction is pushed outward from the inside of the first steel pipe 100 in the horizontal direction by the pusher 306 so as to be horizontally and horizontally inserted into the lower portion of the existing underground manhole structure 104 Cutting the upper portion of the first steel pipe (100) in the direction and installing the vertical beam (308) for blocking; And
Pushing and pushing the second steel pipe 200 in the vertical direction in order to push the second steel pipe 200 in the vertical direction to the lower part of the existing underground manhole structure 104;
The method comprising the steps of: (a) providing a plurality of manholes to be connected to each other;

3. The method of claim 2,
The portion cutting the first steel pipe 100 for pushing in the second steel pipe 200 is cut to a size corresponding to the diameter of the second steel pipe 200 to form the thinner vertical beam 308 ), The second steel pipe (200) is pushed in through the cut portion while supporting the cut portion and the gravel (210) is prevented from flowing down, so that the existing underground manhole structure connection Installation method.

The method according to claim 1,
Wherein a diameter of the first vertical pipe (100) in the horizontal direction press-fitted by the first step is larger than a diameter of the vertical second pipe (200) Construction method of connecting existing underground manhole structure by the method of construction.