KR20060029348A - Method of constructing underground tunnel structure, structure of steel tube applied to the same construction method, and steel tube structure using the same, and underground tunnel structure - Google Patents

Method of constructing underground tunnel structure, structure of steel tube applied to the same construction method, and steel tube structure using the same, and underground tunnel structure Download PDF

Info

Publication number
KR20060029348A
KR20060029348A KR1020040078252A KR20040078252A KR20060029348A KR 20060029348 A KR20060029348 A KR 20060029348A KR 1020040078252 A KR1020040078252 A KR 1020040078252A KR 20040078252 A KR20040078252 A KR 20040078252A KR 20060029348 A KR20060029348 A KR 20060029348A
Authority
KR
South Korea
Prior art keywords
steel pipe
tunnel
underground
underground tunnel
steel
Prior art date
Application number
KR1020040078252A
Other languages
Korean (ko)
Inventor
김진수
Original Assignee
김진수
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 김진수 filed Critical 김진수
Priority to KR1020040078252A priority Critical patent/KR20060029348A/en
Publication of KR20060029348A publication Critical patent/KR20060029348A/en

Links

Images

Abstract

The present invention relates to an underground tunnel structure construction method and a steel pipe structure and steel pipe structure applied thereto, and an underground tunnel structure. The method comprises the steps of constructing the upper structure of the underground tunnel structure using the steel pipe and the connection portion of the steel pipe and the internal space of the steel pipe; Constructing a sidewall structure by securing an internal space with a small temporary tunnel in the sidewall portion of the underground tunnel structure; And excavating the inside of the underground tunnel structure formed by the upper structure and the sidewall structure and forming a bottom portion. The upper structure is press-fitted and drilled the steel pipe on the upper part of the underground tunnel structure, and the steel pipe and the connection of the steel pipe are excavated, install a continuous plate for formwork and waterproof bottles at a slight distance from the ceiling of the connection, and install mortar to install a waterproof layer on the ceiling of the connection part. After forming the steel pipe through the through-hole formed in the reinforcing steel is inserted into the reinforcing bar attached to the fixing plate is attached to the steel pipe and the steel pipe is installed and poured concrete is formed. The side wall structure constructs a primary temporary tunnel on both sides of the underground tunnel structure, excavates a secondary tunnel or a secondary tunnel, if necessary, according to the distance from the primary temporary tunnel to the upper structure or the lower floor, and the sidewall reinforcement and concrete Build a side wall part by pouring. As a result, the steel pipe requirements are significantly reduced than when constructing underground tunnel structures by other steel pipe loop methods, thereby reducing construction costs by simplifying the construction of complex steel pipe structures as well as shortening the air.

Description

Method of constructing underground tunnel structure, structure of steel tube applied to the same construction method, and steel tube structure using the same, and underground tunnel structure}

1 is a cross-sectional view for explaining the steel pipe indentation and excavation process and formwork lower cover plate of the crown structure of the arcuate underground tunnel structure according to the first embodiment of the present invention.

Figure 2 is a cross-sectional view for explaining the steel pipe continuous plate installation and mortar pouring process of the crown structure of the arcuate underground tunnel structure according to the first embodiment of the present invention.

3 is a cross-sectional view for explaining a reinforcing bar installation process of the crown structure of the arcuate underground tunnel structure according to the first embodiment of the present invention.

FIG. 4 is a cross-sectional view for explaining a primary temporary tunnel construction process for forming a concrete and sidewall structure of a crown structure of an arcuate underground tunnel structure according to a first embodiment of the present invention.

5 is a cross-sectional view for explaining a secondary temporary tunnel construction process for forming the side wall structure of the arcuate underground tunnel structure according to the first embodiment of the present invention.

FIG. 6 is a cross-sectional view illustrating a sidewall reinforcement and concrete placing process in primary and secondary temporary tunnels for forming sidewall structure of an arcuate underground tunnel structure according to the first embodiment of the present invention.

FIG. 7 is a cross-sectional view illustrating a process of excavating the inside of a tunnel and a process of installing a temporary support beam in a tunnel after forming the crown structure and the sidewall structure of the arcuate underground tunnel structure according to the first embodiment of the present invention.

8 is a cross-sectional view for explaining a process of pouring concrete in the tunnel bottom to form the interior of the tunnel of the arcuate underground tunnel structure according to the first embodiment of the present invention.

9 is a detailed perspective view showing the interconnection relationship between the steel pipe and the steel pipe applied to the first embodiment of the present invention.

10 to 17 are cross-sectional views for explaining a process of forming an arcuate underground tunnel structure according to a second embodiment of the present invention similarly to the first embodiment of the present invention.

FIG. 18 is a detailed perspective view illustrating the interconnection relationship between a steel pipe and a steel pipe applied to the second embodiment of the present invention. FIG.

19 is a cross-sectional view for explaining an example applied to the underground tunnel of the box form according to another aspect of the present invention.

20 is a perspective view showing in detail the reinforcing bar is applied to the present invention.

<Description of main parts of drawing>

2, 2 '... steel pipe, 3 ... steel

3 '... earth plate, 4 ... connection formwork bottom cover

5 ... continuous plate, 6 ... rebar

6 '... thread of reinforcing bars, 7 ... welding plate

8, 18, 29, 48 ... concrete, 9 ...

10 ... crown structure, 20 ... primary sidewall structure

25, 35 ... side wall braces, 30 ... secondary side wall structures

35.Inside tunnel Tunnel 40 In tunnel

The present invention relates to an underground tunnel structure construction method and a steel pipe structure applied thereto, and a steel pipe structure to which the same is applied, and an underground tunnel structure constructed by the same, in particular, a tunnel method suitable for a place having a poor depth and insufficient depth. As a result, when it is necessary to install a tunnel structure across an existing road and railway, the underground tunnel structure construction method and the steel pipe structure applied thereto, and the steel pipe structure applied thereto, the underground tunnel constructed by the same can be advantageously applied to the existing technology. It is about a structure.

More specifically, in the construction of the underground tunnel structure, the upper structure is first constructed by using steel pipes on the upper part of the underground tunnel structure, and then the sidewall structure is formed by using a small temporary tunnel. The use of steel pipes significantly reduces the number of steel pipes compared to conventional methods, ie, the use of steel pipes on both the upper and side walls of the tunnel, as well as the application of reinforcing bars with fixing plates in the reinforcement of the joints. The underground tunnel structure construction method and the steel pipe structure applied to it have been greatly reduced because the problem of rebar installation has been eliminated, and the cutting and reinforcing work of the steel pipe sidewall in the existing NTR (New Tubular Roof) method is unnecessary. And a steel pipe structure to which the same is applied, and an underground tunnel structure constructed thereby.

Representative non-bonded underground structure construction methods that are currently applied universally include a pulley prosthesis method, steel pipe loop method, and NTR method.

The hull propulsion method presses through a small-diameter hull supporting steel pipe horizontally in advance in the ground through which the hull passes, and then binds a large number of PC steel wires that cross the ground with the hull produced in the field and tow it. This method is to remove the internal soil and to install the structure in the ground by repeating the towing and excavation work. This method is as much as the gap between the temporary steel pipe due to the construction error occurred during horizontal press-in of the propulsion vessel and the steel pipe during the propulsion of the ship. There is a risk of settlement on the road or obstacles in the upper part of the enclosure. Also, since the enclosure is prefabricated and installed in the tow, if the upper toffee is deep, the member dimensions that make up the enclosure become large and the towing becomes difficult and the size of the workplace is large. Applicability in deep underground space is slim.

The steel pipe loop method presses and connects the small steel pipes in advance to the ground where the structure is to be formed in order to form a steel pipe loop, and installs the supporting beams and temporary columns while removing the internal soil inside the steel pipe loops. The concrete is built by pouring concrete. Therefore, when the upper toffee is deep, firstly, temporary materials such as steel pipe loops and support beams must support the upper load, thereby causing a problem in that the size of the temporary facility increases.

NTR method (New Tubular Roof Method) is a method disclosed in the Republic of Korea Patent No. 0217845 "New construction method of the structure in the unattached basement". This uniformly presses the steel pipe into the side wall of the tunnel and the portion of the crown, connects the indented steel pipe with a connecting steel plate to form an interior space, and then cast concrete in the connecting portion and the interior space to build the structure of the tunnel. In this NTR method, in order to secure the space for constructing the structure in the ground, the steel pipes are press-fitted and excavated in the form of underground tunnel structures, and then, both sidewalls of the steel pipes are cut with an oxygen cutting machine, and the steel pipes and the steel pipes are connected to each other to cover the connecting steel plates. After welding, formwork and rebar are installed in the internal space and concrete is poured. Next, the tunnel is excavated and the bottom is formed to complete the structure. Therefore, in narrow spaces such as cutting the side wall of steel pipes and connecting steel plates for continuous internal space, reinforcing steels inside steel pipes, and forming formwork and reinforcing steel pipes for constructing structures afterwards, and placing concrete, etc. Quality management and safety are a problem because complicated work must be performed.

In addition, the present invention (Korean Patent Application No. 04-17999) by the inventor of the present invention is named "Steel pipe loop method for constructing underground structures and its loop structure and its steel pipe structure" for the construction of a small steel pipe itself pressed into the ground. As it is made of slab, no additional support is required, and it is excellent in safety due to the small screen by split excavation, and it is a non-adhesive steel pipe loop that builds underground structures with the advantages of low construction cost and shortened air due to the use of press-fitted steel pipe as a temporary material. Although it was proposed as a construction method, this also had a disadvantage in that the economic efficiency was lowered due to the increase of provisional equipment when the toffee was deep.

The technical problem to be achieved by the present invention is that the grounding is not enough, or the soil conditions are soil, soil, weathered rock because the independence of the soil is inferior to the existing tunnel method NATM (New Austrian Tunneling Method) method for tunnel formation difficult to target In other words, the underground tunnel structure construction method and the steel pipe structure applied thereto, and the steel pipe structure applied thereto, and the underground tunnel structure built by the structure of the type that the reinforced concrete upper structure using the steel pipe to bear most of the upper ground weight Its purpose is to.

Another technical problem to be achieved by the present invention is to simplify the construction of the underground tunnel structure by using a steel pipe on the upper part and a small temporary tunnel on both side walls when constructing the underground tunnel, and at the same time, connecting one steel pipe and another steel pipe The underground tunnel eliminates the disadvantages of cutting and welding the sidewalls of steel pipes in narrow steel pipes by inserting reinforcing bars with fixing plates to assemble and fix them. It is an object of the present invention to provide a structure construction method and a steel pipe structure applied thereto, a steel pipe structure applied thereto, and an underground tunnel structure constructed thereby.

Another technical problem to be achieved by the present invention is an underground tunnel structure construction method and a steel pipe structure applied thereto, and a steel pipe structure applied thereto, which achieves a reduction in air consumption as well as a reduction in construction cost, compared to other steel pipe loop methods. And an underground tunnel structure constructed thereby.

The present invention provides a method for constructing a tunnel structure in the underground, to achieve the above technical problem, the upper structure forming step of constructing the upper structure using the connection portion of the steel pipe and steel pipe and the inner space of the steel pipe on the underground tunnel structure; Forming a sidewall structure in which sidewall structures are constructed by securing internal spaces with small temporary tunnels on both sides of the underground tunnel structure; And tunneling excavation forming step of excavating the inside of the tunnel formed by the upper structure and the sidewall structure and forming the bottom portion.

Preferably, the upper structure is characterized in that the upper part of the underground tunnel structure is applied to both the case of a flat ceiling or an arcuate crown shape.

Preferably, the upper structure is pressurized and excavated the steel pipe with a predetermined distance to the upper portion of the underground structure to excavate the connection between the steel pipe and the steel pipe and the reinforcement plate is attached to the adjacent steel pipe through the through hole formed in the steel pipe Reinforcing bar is installed, concrete is placed in the closed space formed inside the steel pipe and the connecting portion to form a structure that is continuously combined with the steel pipe and reinforcing steel.

More preferably, the upper structure is directly excavated without support to the connection between the steel pipe and the steel pipe, or excavated while being supported by steel ribs or earth plate, install a continuous plate for the formwork and waterproof bottle at a slight distance from the ceiling of the connection and mortar After forming the waterproof layer, install the formwork bottom cover on the bottom of the connection between the steel pipe and the steel pipe, and then concrete is poured into the steel pipe and the closed space.

Preferably, the side wall structure constructs a primary temporary tunnel at both sides of the tunnel and excavates a secondary or tertiary side wall forming temporary tunnel, if necessary, according to the distance from the primary temporary tunnel to the upper structure or the lower floor. By installing the reinforcing bars and formwork for the side wall in the temporary tunnel, the concrete is poured to build the side wall.

In order to achieve the above technical problem, the present invention, in the steel pipe applied to the construction method for constructing the underground structure using the steel pipe, for installing through the reinforcing bars for coupling the steel pipe adjacent to at least a portion of both sides of the steel pipe to each other It provides a steel pipe formed with a plurality of through holes in the longitudinal direction.

Preferably, the through hole formed in the steel pipe may be provided above and below both sides of the steel pipe, but may be provided only on one side or a part thereof.

More preferably the steel pipe is characterized in that the cross section is circular or square, or horseshoe (horseshoe type).

In order to achieve the above technical problem, the present invention provides a steel pipe structure used when constructing an underground tunnel structure, comprising: a plurality of steel pipes press-fitted at regular intervals on the underground tunnel structure; A continuous plate used as a formwork for forming a waterproof layer by pouring mortar in a space formed at a distance from a ceiling to a connection part; A lower cover part serving as a formwork for placing concrete on the bottom of the connection part of the steel pipe; Reinforcing bars attached to the fixed plate is installed through the through-hole formed in the steel pipe for the connection with the adjacent steel pipe; And it provides a steel pipe structure comprising a concrete poured in a closed space formed inside the steel pipe and the connecting portion by the steel ribs and form the lower cover portion.

The present invention is an underground tunnel structure, in order to achieve the above technical problem, the upper structure formed by using a connection portion of the steel pipe and the steel pipe spaced apart at regular intervals on the upper portion of the underground tunnel structure and the inner space; A sidewall structure in which concrete is poured by securing an internal space with a small temporary tunnel on both sides of the underground tunnel structure; And a tunnel internal structure that excavates the inside of the tunnel formed by the upper structure and the sidewall structure and forms a bottom portion.

Hereinafter, the construction and operation of the underground tunnel structure construction method and the steel pipe applied thereto and the steel pipe structure applied thereto, and the underground tunnel structure constructed by the preferred embodiment of the present invention will be described in detail. The underground tunnel structure according to the present invention can be applied to both the arched underground tunnel structure shown in FIGS. 1 to 18 and the box-type underground tunnel structure shown in FIG. 19. An arcuate underground tunnel structure forms an arcuate crown structure on top, and a boxed underground tunnel structure forms a flat slab type superstructure on top.

In addition, the side wall structure applied to the present invention may be formed from the upper structure to the lower floor as shown in Figs. 1 to 9 when the temporary tunnel is formed, and as shown in Figs. It may be formed as an upper structure. In this case, it is also necessary to form a plurality of temporary tunnels according to the height from the upper structure to the bottom of the floor. Side wall reinforcement or concrete pouring in the temporary tunnel may be simultaneously executed in all temporary tunnels or may be performed independently for each temporary tunnel.

In addition, the steel pipe to be applied to the present invention may be a horseshoe (horseshoe) steel pipe having a cross section as shown in Figs. 1 to 9, or a circular steel pipe may be used as shown in Figs. 10 to 18, and Fig. 19 As shown in the figure, a circular steel pipe and a horseshoe type steel pipe may be used in combination.

In addition, in the present invention, reference numerals of members performing the same or similar functions will be described with the same or similar reference numerals.

First, when the steel pipe having a horseshoe cross section is applied to the arched underground tunnel structure as the best embodiment of the present invention, the side wall structure is formed from the upper arched crown structure to the lower bottom portion, and concrete pouring is performed in two temporary tunnels at the same time. This will be described with reference to FIGS. 1 to 9.

The construction method of the arched underground tunnel structure of the present invention, as shown in Figures 1 to 9, in the construction method for the construction of the arched tunnel structure in the ground, the connection of the steel pipe and the steel pipe to the upper crown portion of the underground structure and its A crown structure forming step of constructing the crown structure 10 using an inner space; Forming a sidewall structure including sidewall structures 20 and 30 by securing internal spaces with small temporary tunnels at lower ends of both sides of the underground structure; And a tunnel internal excavation forming step of excavating the tunnel interior 40 formed by the crown structure and the sidewall portion structure and forming a bottom portion.

1 is a cross-sectional view for explaining the steel pipe indentation and excavation process and the form bottom cover portion of the crown structure of the arched underground tunnel structure according to the present invention. Figure 2 is a cross-sectional view for explaining the continuous plate formwork installation and mortar pouring process of the crown structure of the arched underground tunnel structure according to the present invention. 3 is a cross-sectional view for explaining a reinforcing steel bar installation process of the crown structure of the arched underground tunnel structure according to the present invention. 4 is a cross-sectional view for explaining a primary temporary tunnel construction process for forming concrete and sidewall portion structure of the crown structure of the arched underground tunnel structure according to the invention.

As shown in Figures 1 to 4, the crown structure 10 is the connection portion of the steel pipe (2) and the steel pipe (2) after press-excavating the steel pipe (2) at a predetermined distance to the crown portion of the underground tunnel structure Excavation of earth and sand by means of a manpower or a machine and inserting reinforcing bar 6 having a fixing plate (9 of FIGS. 9 and 20) attached to the adjacent steel pipe 2 through a through hole formed in the steel pipe 2. It is formed by placing concrete 8 in the closed space formed in the steel pipe and the connecting portion.

9 is a detailed perspective view showing the interconnection relationship of the steel pipe to be applied to the present invention. As illustrated in FIG. 9, the crown structure 10 is excavated while supporting the steel pipe 2 and the steel pipe 2 with the steel rib 3 or the earth plate 3 ′ in detail. If the condition is good, installation of earth plate may not be considered, and if necessary, appropriate measures such as ground reinforcement grouting may be taken in advance. In order to waterproof the connection part, a continuous continuous plate 5 for formwork and waterproof bottles is installed at a distance from the ceiling, and a mortar 7 is poured to form a waterproof layer, and through a through hole formed in the steel pipe 2. The beam reinforcing bar (6) is inserted into the upper and lower parts of the steel pipe (2), the formwork lower cover (4) to the steel pipe (2) and the bottom of the steel pipe (2), and then the concrete (8) is placed in the steel pipe and the closed space To form.

The steel pipe 2 applied to this embodiment is a steel pipe whose cross section is a horseshoe type, and is advantageous in that the tunnel ceiling is contoured in an arc shape.

The reinforcing bar 6 shown in detail in FIG. 20 has one side formed of a welding fixing plate 7 and the other steel pipe 2 through the through hole of any steel pipe 2 in the welding fixing plate 7. A bolt is inserted through the through-hole and the end is formed with a screw 6 ', and a fixing plate 9 is inserted into and fixed to the screw 6'. The reinforcing bar 6 is fixed to the fixing plate in the steel pipes on both sides through the through holes formed in the longitudinal direction in the steel pipe (2) and is firmly fixed by the concrete to be poured thereafter, so that it has bending stiffness and lateral support. Through-holes into which the reinforcing bars 6 are inserted are formed above and below the steel pipe, but may be formed in one or two or more places on both sides of the steel pipe in the longitudinal direction.

As shown in FIG. 9, the steel ribs 3 are provided in a band-like structure at regular intervals around the steel pipe and are supported by the steel pipe 2 and the steel pipe 2. The earth plate 3 ′ does not necessarily need to be installed when the upper layer of the steel rib 3 connecting the steel pipe 2 is a hard layer such as an arm.

As shown in FIG. 4, after the crown structure 10 is formed at the crown portion of the arched underground tunnel structure, a small-scale temporary tunnel for building the side wall structure 20 at both sides of the tunnel for forming the side wall portion of the underground structure Make 22.

FIG. 5 shows the secondary construction tunnel 30 when the distance from the crown structure 10 to the bottom is far after making the primary construction tunnel 22 for forming the sidewall structure of the arched underground tunnel structure according to the present invention. It is sectional drawing for demonstrating the process of making). 6 is a cross-sectional view for explaining the sidewall reinforcement and concrete placing process in the primary and secondary temporary tunnel for forming the sidewall structure of the arched underground tunnel structure according to the present invention.

As shown in FIGS. 5 and 6, the sidewall structure 20 constructs a primary temporary tunnel 22 at both sides of the tunnel, and the distance from the primary temporary tunnel 22 to the crown structure 10. If necessary, the secondary or tertiary sidewall forming temporary tunnel 32 is excavated to install reinforcing bars and formwork for the sidewalls in the primary and secondary temporary tunnels 22 and 32 and cast concrete 28 Build the side wall part. At this time, temporary tunnel supports 25 and 35 are installed at the side wall to prevent displacement of the side wall.

In FIG. 5 and FIG. 6, two temporary tunnels 22 and 32 are formed when the side wall is formed. However, the side wall may be formed through only one temporary tunnel depending on the distance from the lower side wall portion 20 to the crown structure 10. In some cases, or not shown in the drawing, it may be necessary to construct the side wall portion through three or more temporary tunnels.

7 is a cross-sectional view illustrating a process of excavating the inside of a tunnel and installing a temporary temporary support beam in a tunnel to form an inside of a tunnel formed of a crown structure and a sidewall structure of an arched underground tunnel structure according to the present invention.

As shown in FIG. 7, when the sidewall portion structures 20 and 30 are formed, the inside of the tunnel defined by the crown structure 10 and the sidewall portion structures 20 and 30 is excavated, and the sidewalls inside the tunnel are excavated. Temporary braces 35 are formed between the portions to prevent displacement of the side wall portions due to earth pressure.

Finally, Figure 8 is a cross-sectional view for explaining the process of pouring concrete to the tunnel bottom to form the tunnel interior of the underground arch tunnel structure according to the present invention, as shown in Figure 8, Finally, the concrete is poured into the tunnel floor and the temporary braces 35 are removed and finished.

As described above, the underground tunnel structure according to the first embodiment of the present invention is a technique in which the construction method of the structure of the crown portion and the side wall portion in the tunnel-type underground structure is different, and the crown portion is fixed to both upper and lower sides of the steel pipe. Indent the steel pipes punched at intervals, excavate the connection between the steel pipe and the steel pipe, install the reinforcing steel from one steel pipe to the other steel pipe, install the fixing plate in the steel pipe, and then reinforce it by concrete As a structure in which the reinforcing steel is firmly constrained, it eliminates welding operations such as cutting or reinforcing the steel pipe side wall as well as the complicated reinforcing steel assembly process performed in the existing narrow steel pipe. In addition, the side wall part secures the space required for the construction of the side wall part by creating a temporary tunnel, significantly improving the working conditions than when using the existing internal space of the steel pipe, and finally, the tunnel structure structure that can easily support bending and shearing Will be in the composition.

According to another aspect of the present invention, as shown in Figure 9, the steel pipe (2) applied to the construction method for constructing the underground tunnel structure of the present invention, the steel pipe adjacent to at least a portion of both sides of the steel pipe (2) to each other A plurality of through holes are formed in the longitudinal direction to penetrate the reinforcing bar 6, and the cross section has a structure that forms a smooth curve with a ceiling of an arcuate tunnel structure in a horseshoe shape. The through hole may be provided above and below both sides of the steel pipe, but may be provided only on one side. In addition, the reinforcing bar 6 preferably has a structure in which one end penetrates the through-hole of one steel pipe 2 and passes through the through-hole of another steel pipe, and then is screwed to the fixing plate 9.

According to another aspect of the present invention, as shown in Figures 1 to 4, the steel pipe structure used in the construction of the arched underground tunnel structure of the present invention is a plurality of press-fitted at a predetermined interval to the crown portion of the arched underground tunnel structure Steel pipe (2); Steel ribs (3) connecting the upper portion of the steel pipe and the steel pipe at regular intervals in order to excavate while supporting the connection of the steel pipe (2) and the steel pipe (2); A lower cover part 4 which performs a formwork for placing concrete on the bottom of the connection part of the steel pipe; A continuous plate (5) for forming molds and waterproofing in order to form a waterproofing layer by pouring mortar in a space formed at a distance from the ceiling to the connection part; Reinforcing bars (6) attached to the fixed plate is installed through the through-hole formed in the steel pipe for connection with the adjacent steel pipe (6); And concrete 8 placed in a closed space formed inside the steel pipe and connected to the steel rib and formwork lower cover part.

In particular, when the upper portion of the connection portion is not a rock layer further includes a ground plate (3 ') or ground reinforcement grouting covering the upper portion of the steel pipe and the steel pipe to support the load from the upper portion.

According to another aspect of the present invention, as shown in Figure 8, the arched underground tunnel structure of the present invention uses the connection portion of the steel pipe (2) and the steel pipe (2) spaced apart at regular intervals in the crown portion and the internal space thereof A crown structure 10 formed by; Sidewall structures (20, 30) placed in concrete by securing internal spaces with small temporary tunnels on both sides of the underground tunnel structure; And a tunnel internal structure 40 that excavates the interior of the tunnel formed by the crown structure and the sidewall portion structure and forms the bottom portion 48.

10 to 17 are cross-sectional views illustrating a process of forming an arcuate underground tunnel structure according to a second embodiment of the present invention similarly to the first embodiment of the present invention, and FIG. 18 is a second view of the present invention. Detailed perspective view showing the interconnection relationship between the steel pipe and the steel pipe applied to the embodiment. Here, in the construction method of the underground tunnel structure according to the second embodiment of the present invention, a circular steel pipe is used, and an example in which the side wall structure is also formed by a two-stage excavation and concrete pouring process from the bottom to the top of the structure is shown. .

The construction method of the arched underground tunnel structure according to the second embodiment of the present invention is a method described in reference to Figures 1 to 9 in the construction method for constructing an arcuate tunnel structure in the ground, as shown in Figs. As in the first embodiment of the invention, the crown structure forming step of constructing the crown structure (10) by using the connection portion of the steel pipe and the steel pipe and the inner space in the crown portion of the underground structure; Forming a sidewall structure including sidewall structures 20 and 30 by securing internal spaces with small temporary tunnels at lower ends of both sides of the underground structure; And a tunnel internal excavation forming step of excavating the tunnel interior 40 formed by the crown structure and the sidewall portion structure and forming a bottom portion, and thus, the same portions as in the first embodiment will be omitted. Only the other parts will be described in detail.

First, the second embodiment of the present invention differs from the first embodiment in that a steel pipe having a circular cross section is used. When the crown structure is made by applying a circular steel pipe to the upper crown portion of the underground tunnel structure, the ceiling of the crown portion may be bent to finish the plastering or to cut a lower portion of the steel pipe to form a smooth curved surface. If high, even if used as a curved surface will not be greatly affected.

Next, the second embodiment of the present invention differs from the first embodiment in the process of forming the sidewall structure. In the first embodiment, the process of forming the side wall portion is to construct the temporary tunnel in multiple stages from the top of the underground tunnel structure to the bottom to construct the side wall structure through reinforcement and concrete casting in the two-stage temporary tunnel at the same time. The process of forming the side wall structure of the structure is different in that it is formed in two stages from the bottom to the top. Also, in the second embodiment, after the reinforcement and concrete is placed in the primary temporary tunnel, the secondary temporary tunnel is subjected to a period of curing. The difference in the construction of the side wall structure by reinforcement and concrete pouring is different.

Hereinafter, the sidewall forming process applied to the construction method of the arcuate underground tunnel structure according to the second embodiment will be described with reference to FIGS. 10 to 18.

10 to 12, the process of forming the crown structure of the arcuate underground tunnel structure according to the second embodiment of the present invention is the same as the first embodiment, so a description thereof will be omitted.

As shown in FIG. 13, after the crown structure 10 is formed at the crown portion of the arcuate underground tunnel structure, a small-scale construction tunnel for constructing the side wall structure 20 for forming side wall portions at both lower ends of the underground tunnel structure. Make

FIG. 14 is a cross-sectional view illustrating a sidewall reinforcement and concrete placing process in a primary temporary tunnel for forming a sidewall structure of an arcuate underground tunnel structure according to the present invention. FIG. 15 is a cross-sectional view illustrating a secondary temporary tunnel construction process for forming a sidewall structure of an arcuate underground tunnel structure and a sidewall reinforcement and concrete placing process in a secondary temporary tunnel according to the present invention.

As shown in Fig. 14 and 15, the side wall structure structure 20 is to construct the primary temporary tunnel 22 at the lower end of both sides of the tunnel and to install the reinforcing bars and formwork for the side wall in the primary temporary tunnel 22 (18) is poured, and if necessary, according to the distance from the primary temporary tunnel 22 to the crown structure 10, a secondary or third or more sidewall forming temporary tunnel 32 is excavated and the primary temporary tunnel ( As in 22), the side wall is constructed by installing the reinforcing bar and formwork for the side wall and pouring concrete 28. At this time, temporary tunnel supports 25 and 35 are installed at the side wall to prevent displacement of the side wall.

In FIG. 14 and FIG. 15, two temporary tunnels 22 and 32 were formed when the side wall was formed, but only one temporary tunnel was formed in accordance with the distance from the lower side wall portion 20 to the crown structure 10. In some cases, or not shown in the drawing, it may be necessary to form sidewalls through three or more temporary tunnels.

16 to 18, the construction method of the arcuate tunnel structure according to the second embodiment of the present invention is the same as the first embodiment, so a detailed description thereof will be omitted.

As described above, the arcuate underground tunnel structure according to the first and second embodiments of the present invention is slightly different in the cross-sectional shape of the steel pipe and the side wall portion forming process, respectively, but all of the structure of the crown portion and the side wall portion as compared with the prior art. As a technique of different construction method, the crown part is press-fitted the steel pipe with holes drilled at regular intervals on the upper and lower sides of the steel pipe, excavating the connection between the steel pipe and the steel pipe, and then penetrating the reinforcing steel from one steel pipe to the other steel pipe. In this structure, the fixing plate is screwed together in the steel pipe so that the reinforcing steel is firmly constrained by the concrete that is to be poured afterwards, and the cutting or reinforcing of the steel pipe side wall as well as the complicated reinforcing steel assembly process performed in the existing narrow steel pipe. The welding work of the back was eliminated. In addition, the side wall part forms a small temporary tunnel to secure the space necessary for the construction of the side wall part, thereby significantly improving the working conditions than when working with the existing internal space of the steel pipe, and finally, the tunnel structure structure that can easily support bending and shearing. Will be in the composition.

So far, the underground tunnel structure of the present invention has been described as an arcuate underground tunnel structure, but the underground tunnel structure of the present invention can be applied to a box-type underground tunnel structure as shown in FIG. As shown in FIG. 19, the upper portion of the underground tunnel structure of the present invention is not an arcuate crown structure, but is a box-shaped underground tunnel structure having a flat slab structure, and the upper structure uses four steel pipes 2 and 2 '. The upper structure is constructed by using a steel pipe 2 having a horseshoe-shaped cross section in the middle and a circular steel pipe 2 'at both sides thereof, which is different from the first and second embodiments described above, and forms other upper structures. Since the process is the same, a detailed description thereof will be omitted. Similarly, since the process of forming the sidewall structure of the box-type underground tunnel structure is the same as in the first embodiment, detailed description thereof will be omitted. That is, in the box-type underground tunnel structure of FIG. 19, the steel pipe of the middle portion of the superstructure is formed using the horseshoe steel pipe to form the upper part in the tunnel, and the side wall part is formed perpendicular to the bottom so that the inside of the tunnel becomes a box shape. It has a cross section.

As described above, in the present embodiment, a steel pipe is used only for the upper structure, but it has been described that the ceiling surface of the upper part of the tunnel can be formed by selectively or combining the case where the steel pipe has a circular cross section and a horseshoe shape. In addition, in order to construct the reinforced concrete structure without using a steel pipe in the formation of the sidewall structure, a primary or secondary construction tunnel was formed from top to bottom or from bottom to top. In addition, when the ground layer is a rock on the steel rib, the installation of the earth plate may be omitted. However, the present invention is not necessarily limited thereto, and many modifications and variations are possible to those skilled in the art. That is, even if the steel pipe is not used only for the superstructure and the steel pipe is used for a part of the sidewall structure, it will be apparent to those skilled in the art if the steel pipes of the superstructure and the sidewall structure are not connected to each other.

In addition, the present invention has been described so far as being limited to the non-adhesive underground tunnel structure construction method and the steel pipe structure applied thereto, and the steel pipe structure applied thereto, and the underground arch tunnel structure constructed thereby, but the present invention is limited thereto. It is to be understood that various modifications and variations are possible without departing from the scope of the appended claims, regardless of construction purpose and object.

As described above, the present invention is not suitable for the toffee, or the soil condition is soil, weathered soil, weathered rock, the ground is independence of the ground, the existing ground tunneling method NATT (New Austrian Tunneling Method) method, which is difficult to build tunnels, the upper ground Most of its own weight is in the form of underground tunnel structures (linings) made of reinforced concrete. In other words, in the construction of the underground tunnel structure, the upper structure is first constructed by using steel pipes, and then the sidewall structure is formed by using a small temporary tunnel. The number of steel pipes is significantly reduced than that of steel pipes. In addition, the reinforcement of the reinforcing bar in the upper part of the underground tunnel structure can be installed by selectively installing the reinforcing bar only by inserting and applying the reinforcing bar attached to the fixing plate so that the end of the reinforcing bar is constrained in the other steel pipes. Not only did they dramatically reduce the amount of rebar, but they also overcome the difficulties of installing rebar in tight spaces. In addition, the present invention, compared to the conventional NTR method, reduces the amount of use of steel pipes and significantly reduces the welding and cutting operations, as well as the easy installation of rebar. This shortens the air as well as the construction cost.                     

In addition, the side wall structure applied to the present invention by forming a temporary tunnel to secure the space required for the construction of the side wall to significantly improve the working conditions than when using the existing internal space of the steel pipe and finally bend and shear easily Supporting tunnel structures will be built into the ground.

Claims (20)

  1. In the construction method of building a tunnel structure in the ground,
    An upper structure forming step of constructing an upper structure by using a connection portion between the steel pipe and the steel pipe and an inner space of the steel pipe on the underground tunnel structure;
    Forming a sidewall structure in which sidewall structures are constructed by securing internal spaces with small temporary tunnels on both sides of the underground tunnel structure; And
    Underground tunnel structure construction method comprising a tunnel internal excavation forming step of excavating the interior of the tunnel formed by the upper structure and the side wall portion structure and to form a bottom portion.
  2. The method of claim 1, wherein the upper structure is applied when both the upper portion of the underground tunnel structure is a flat ceiling or an arcuate crown shape.
  3. According to claim 1 or claim 2, wherein the upper structure by pressing the excavation of the steel pipe at a predetermined distance to the upper portion of the underground structure to excavate the connection between the steel pipe and the steel pipe and the adjacent steel pipe through the through hole formed in the steel pipe An underground tunnel structure construction method comprising the installation of reinforcing bars attached to a fixing plate for connection, and placing concrete in a closed space formed in the steel pipe and the connection part to form a structure in which steel pipes and reinforcing bars are continuously connected.
  4. The method according to claim 1 or 2, wherein the upper structure is directly excavated without support of the steel pipe and the connection of the steel pipe, or excavated while being supported by steel ribs or earth plate, and is used for formwork and waterproof bottles at a slight distance from the ceiling of the connection portion. Underground tunnel structure construction method, characterized in that the installation of a continuous plate, the mortar is cast to form a waterproof layer, and the formwork bottom cover is installed at the bottom of the connection between the steel pipe and the steel pipe, and then concrete is placed in the steel pipe and the closed space.
  5. According to claim 1 or 2, wherein the side wall structure is a secondary or tertiary or more if necessary depending on the distance from the primary construction tunnel to the upper structure or the lower floor to establish a primary construction tunnel on both sides of the tunnel A construction method for underground tunnel structure, comprising: excavating a sidewall part temporary tunnel, installing reinforcing bars and formwork for the sidewall in the temporary tunnel, and placing sidewalls by pouring concrete.
  6. A steel pipe applied to a construction method for constructing underground structures using steel pipes, wherein a plurality of through-holes are formed in a longitudinal direction to penetrate reinforcing bars for joining steel pipes adjacent to at least a part of both sides of the steel pipes to each other.
  7. The steel pipe of claim 6, wherein the through-holes formed in the steel pipe may be provided above and below both sides of the steel pipe, but may be provided only on one side or a part thereof.
  8. The steel pipe according to claim 6 or 7, wherein the steel pipe has a circular or square cross section or a horseshoe shape.
  9. In the steel pipe structure used in the construction of underground tunnel structure,
    A plurality of steel pipes press-fitted at intervals above the underground tunnel structure;
    A continuous plate used as a formwork for forming a waterproof layer by pouring mortar in a space formed at a distance from a ceiling to a connection part;
    A lower cover part serving as a formwork for placing concrete on the bottom of the connection part of the steel pipe;
    Reinforcing bars attached to the fixed plate is installed through the through-hole formed in the steel pipe for the connection with the adjacent steel pipe; And
    A steel pipe structure including concrete poured in a closed space formed inside the steel pipe and the connection portion formed by the steel rib and the formwork lower cover part.
  10. The steel pipe structure of claim 9, wherein the through-holes formed in the steel pipe may be provided above and below both sides of the steel pipe, but may be provided only on one side or a part thereof.
  11. The steel pipe structure according to claim 9 or 10, wherein the steel pipe has a circular or square cross section or a horseshoe shape.
  12. In underground tunnel structure,
    An upper structure formed by using a connection portion between the steel pipe and the steel pipe installed at a predetermined interval on the underground tunnel structure and an inner space thereof;
    A sidewall structure in which concrete is poured by securing an internal space with a small temporary tunnel on both sides of the underground tunnel structure; And
    Underground tunnel structure comprising a tunnel internal structure for excavating the interior of the tunnel formed by the upper structure and the side wall portion structure and to form a bottom portion.
  13. 13. The underground tunnel structure according to claim 12, wherein the superstructure is applied when both the upper portion of the underground tunnel structure is a flat ceiling or an arcuate crown.
  14. The underground tunnel structure according to claim 12, wherein when the upper part is a flat ceiling, the steel pipe applied to the upper structure uses a steel pipe having a circular cross section on both sides and a steel pipe having a horseshoe shaped cross section on the middle portion.
  15. 15. The method according to any one of claims 12 to 14, wherein the upper structure is press-excavated and drilled the steel pipe at a predetermined distance on the upper portion of the underground structure, and then the connection between the steel pipe and the steel pipe is excavated and adjacent through the through-hole formed in the steel pipe. An underground tunnel structure, comprising: a reinforcing bar with a fixing plate attached to the steel pipe, and placing concrete in a closed space formed in the inner pipe and the connection part to form a structure in which the steel pipe and the reinforcing bar are continuously connected to each other.
  16. 15. The method according to any one of claims 12 to 14, wherein the upper structure is directly excavated without supporting portions of the steel pipe and the steel pipe, or excavated while being supported by steel ribs or earth plates, and form a mold at a slight distance from the ceiling of the connecting portion. And installing a continuous plate for waterproof bottles, placing a mortar to form a waterproof layer, and installing a formwork lower cover at the bottom of the connection portion between the steel pipe and the steel pipe, and then placing concrete in the steel pipe and the closed space.
  17. 15. The method according to any one of claims 12 to 14, wherein the side wall structure constructs a primary temporary tunnel at both sides of the tunnel and, if necessary, the secondary structure according to the distance from the primary temporary tunnel to the upper structure or the lower floor. Or underground tunnel structure characterized in that the construction of the side wall portion by excavating the third or more side wall forming temporary tunnel to install the reinforcing bars and formwork for the side wall in the temporary tunnel and to cast concrete.
  18. The underground tunnel structure according to any one of claims 12 to 14, wherein the through-holes formed in the steel pipe may be provided above and below both sides of the steel pipe, but may be provided only on one side or a part thereof.
  19. 15. The underground tunnel structure according to any one of claims 12 to 14, wherein the steel pipe has a circular or square cross section or a horseshoe shape.
  20. The structure of claim 15, wherein the reinforcing steel is inserted into the other steel pipe through one side through-hole of the steel pipe, and is formed of a welding fixing plate at one end thereof, and a screw is formed at the end of the bolt extending therefrom, and the fixing part is formed in the screw part. An underground tunnel structure, characterized in that the insertion is fixed.
KR1020040078252A 2004-10-01 2004-10-01 Method of constructing underground tunnel structure, structure of steel tube applied to the same construction method, and steel tube structure using the same, and underground tunnel structure KR20060029348A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020040078252A KR20060029348A (en) 2004-10-01 2004-10-01 Method of constructing underground tunnel structure, structure of steel tube applied to the same construction method, and steel tube structure using the same, and underground tunnel structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020040078252A KR20060029348A (en) 2004-10-01 2004-10-01 Method of constructing underground tunnel structure, structure of steel tube applied to the same construction method, and steel tube structure using the same, and underground tunnel structure

Related Child Applications (1)

Application Number Title Priority Date Filing Date
KR20-2004-0027913U Division KR200372405Y1 (en) 2004-10-01 2004-10-01 Underground tunnel structure using steel tubes

Publications (1)

Publication Number Publication Date
KR20060029348A true KR20060029348A (en) 2006-04-06

Family

ID=37139704

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020040078252A KR20060029348A (en) 2004-10-01 2004-10-01 Method of constructing underground tunnel structure, structure of steel tube applied to the same construction method, and steel tube structure using the same, and underground tunnel structure

Country Status (1)

Country Link
KR (1) KR20060029348A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100713787B1 (en) * 2006-08-25 2007-05-02 송관권 The underground structure assembly and the underground structure building method which it uses
KR100756681B1 (en) * 2006-05-01 2007-09-07 주식회사 도화종합기술공사 Steel pipe roof construction method of road and railroad lower part
KR100815174B1 (en) * 2006-09-11 2008-03-20 (주)대우건설 Pipe Roof Tunnel and Constructing Method thereof
KR101133734B1 (en) * 2009-08-20 2012-04-09 이영복 Method for tunneling construction and tunnel structure

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100756681B1 (en) * 2006-05-01 2007-09-07 주식회사 도화종합기술공사 Steel pipe roof construction method of road and railroad lower part
KR100713787B1 (en) * 2006-08-25 2007-05-02 송관권 The underground structure assembly and the underground structure building method which it uses
KR100815174B1 (en) * 2006-09-11 2008-03-20 (주)대우건설 Pipe Roof Tunnel and Constructing Method thereof
KR101133734B1 (en) * 2009-08-20 2012-04-09 이영복 Method for tunneling construction and tunnel structure

Similar Documents

Publication Publication Date Title
US7530765B2 (en) Structure of intermediate wall of three arch excavated tunnel and method for constructing the same
KR101014796B1 (en) Top-down underground construction method using prefabricated concrete column member as temporary bridge column
KR101582173B1 (en) The structure assembly for building a tunnel and building method thereof
KR100866162B1 (en) Chair-type self-supported earth retaining wall constructing method
KR100531385B1 (en) Construction method of underground structure that enables continuous retaining wall using steel wale and diaphragm effect of concrete slab
KR100713787B1 (en) The underground structure assembly and the underground structure building method which it uses
GB1561053A (en) Construction of concrete walls
JP4722783B2 (en) Foundation reinforcement method for existing buildings
KR100569703B1 (en) Structure of steel pipe applied to steel pipe roof construction method for building underground structure, and steel pipe roof structure therefor using the same, and steel roof construction method thereof
KR101069705B1 (en) Method for installing waterproofing steel plate in construction of undergound tunnel
CN101736749B (en) Method for constructing soft soil foundation continuous caisson
JP2006322222A (en) Construction method of large-sectional tunnel
KR101244257B1 (en) Method for digging tunnel
KR100562158B1 (en) Steel pipe roof construction method for building underground structure, roof structure therefor, and structure of steel pipe therefor
KR101018282B1 (en) Method for constructing fabric for undergound tunnel
KR100634726B1 (en) Form system for construction of underground slab and method for constructing underground slab and breast wall using the same
KR100938918B1 (en) Top-down construction method using steel frame by channel
KR101973565B1 (en) Sheathing method for constructing both sheathing wall and cutoff collar by welding cutoff plate to phc pile with longitudinal plate
KR101161332B1 (en) Construction method of the underground tunnel
KR100831332B1 (en) Underground retaining wall for public works and method for constructing the same
CH642416A5 (en) Method of constructing underground works with vertical walls, device for executing the method and underground work.
KR101096664B1 (en) Construction method of approaching duel tunnel and pressing unit of pillar using the same
CN105839946A (en) Brick-concrete structure building lifting add-layer method
KR101331261B1 (en) Underground prefabricated precast concrete rainwater recycling facility using precast concrete continuous wall in strut structure or earth anchor and construction method of the same
KR100401279B1 (en) Method of building underground structure

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application