KR102305424B1 - Construction meyhod for underground structure by non-excavation using closed section reinforcing member and underground structure therewith - Google Patents

Abstract

Constructing a closed underground body by constructing a horizontal steel pipe for constructing an unopened underground structure, and stably installing a closed intermediate support for load support on the inner surface of the underground enclosure using a wedge-type press-in hole, , A method for constructing a non-interleaved underground structure using a closed support material that can construct a non-interleaved structure in the ground in a non-intersecting manner only by finishing the inner surface of the closed underground body, and a non-interleaved underground structure manufactured using the same are disclosed.

Description

Construction method of non-interleaved underground structure using closed intermediate support and non-intercepted underground structure manufactured using the same

The present invention relates to a method for constructing a non-intercepted underground structure using a closed intermediate support and to a non-intercepted underground structure manufactured using the same. More specifically, a closed underground body (A) is constructed by constructing a horizontal steel pipe for constructing a non-interleaved underground structure in a closed type, and a closed type intermediate support for load support on the inner surface of the underground closed body (A) is wedge-shaped. A method for constructing a non-interleaved underground structure using a closed support material that can be installed stably using a press-in hole and a non-interleaved structure can be constructed in the underground in a non-interleaved manner only by finishing the inner surface of the underground closed body (A) and the same It relates to an unopened underground structure manufactured using

Figure 1a shows a non-opening construction of a conventional underground passage.

That is, the ground is excavated forward in the longitudinal direction of the underground structure from the underground, and the excavated space is excavated underground while having a certain depth downward from the surface of the ground, without constructing an underground road etc. To construct a structure,

First, the polyhedral tube body 12 is penetrated forwardly at the four corners, and the polyhedral tube body 12 is penetrated forward while connecting the arc-shaped tube body 11 between the polyhedral tubes 12, and the arc-shaped tube body 11 and the polyhedral tube body 12 Install the reinforcing bar assembly 30 in the opening formed by cutting the side lights of the

Concrete 40 is poured inside the arc-shaped tubular body 11 and the polyhedral tubular body 12 so that the reinforcing bar assembly 30 is embedded. It can be seen that (40) is being constructed.

Accordingly, it can be seen that the concrete 40 is integrally synthesized with the tube-shaped arc-shaped tube body 11 and the polyhedral tube body 12 made of steel to support the earth pressure generated in the ground.

However, this method has a limitation in that it is difficult to cut the side surfaces of the arc-shaped tube body 11 and the polyhedral tube body 12 , which inevitably becomes a factor in delaying the construction period and increasing the construction cost. In addition, since a separate device for installing the reinforcing bar assembly 30 integrally in the openings of the arc-shaped tube body 11 and the polyhedral tube body 12 is required, the workability is inevitably lowered.

1b is a view showing the construction of a horizontal pipe and a support member constructed in a conventional tunnel shaft.

The tunnel shaft part is a tunnel structure for bringing in a work vehicle, an excavator, etc. before the tunnel pole is formed, and a horizontal steel pipe 52 extending a certain length from the outside of the tunnel entrance to the front is inserted and connected in a semi-circular form. A semi-circular support member 50 is also installed on the side to prevent the horizontal steel pipe from collapsing due to the formation of the tunnel entrance, and is finally demolished.

However, these horizontal pipes and support materials installed in the tunnel shaft are basically for reinforcing the tunnel shaft in tunnel construction, and are used to prevent collapse due to excavation of the tunnel shaft, not for the construction of underground structures. there will be

Republic of Korea Patent No. 10-1665515 (Title of the invention: Method and structure of direct drilling multi-stage tunnel without cutting the original ground, publication date: October 24, 2016) Korean Patent No. 10-1834847 (Title of the invention: Construction method of eco-friendly tunnel shaft using mini pipe loop, publication date: March 06, 2018) Republic of Korea Patent No. 10-1800582 (Title of the invention: Non-interleaved construction method of underground passage, publication date: December 20, 2017)

Accordingly, in the present invention, in constructing an underground structure by a non-intersection method that does not excavate the ground, the underground closure body (A) is first constructed by constructing a horizontal steel pipe connected to be closed in the form of a cross-section of the underground structure in the ground, Install a closed intermediate support to effectively resist the earth pressure transmitted to the closed body (A), but use a steel pipe wedge mechanism for efficient and stable installation of the load, and between the closed body (A) and the closed type It is a technical task to solve the construction method of non-intercepted underground structures using closed intermediate supports that can be used as underground structures as they are after finishing the supports and the provision of non-intercepted underground structures manufactured using them.

In order to provide a method for constructing a non-intercepted underground structure using the closed intermediate support of the present invention and a non-intercepted underground structure manufactured using the same,

(a) constructing the underground closure body (A) by horizontally inserting a horizontal steel pipe into the underground (G) from the front; (B) installing a plurality of spaced apart on the inner surface of the underground closed body (A) exposed by excavating the closed-type intermediate support; And (c) using a wedge-type press-in port to construct a closed intermediate support to be rigidly connected to each other to the underground closure body (A); including, wherein the wedge-shaped press-in port of step (c) has a wedge function while , the portion in contact with the horizontal steel pipe formed as a curved surface is formed as a corresponding curved surface, and the portion in contact with the closed intermediate support formed in the horizontal surface is formed in the corresponding horizontal surface, and the amount of the portion in contact with the closed intermediate support and the horizontal steel pipe By inserting two wedge-shaped press-in ports from the side into the gap space between the horizontal steel pipe and the closed intermediate support, the closed intermediate support is rigidly welded to the underground joint body (A) without welding, so that it is in an interview state.

According to the method for constructing a non-intercepted underground structure using a closed intermediate support of the present invention and a non-intercepted underground structure manufactured using the same, there is no need for concrete pouring for the construction of the top plate, bottom plate and both side walls of the non-intercepted underground structure. Therefore, it is possible to quickly and economically construct an unopened underground structure.

In addition, the closed-type intermediate support and the underground closure body (A) by the horizontal steel pipe use the closed-type intermediate support and the underground closure wedge-type press inlet to support the earth pressure acting on the underground closure body. can be promoted.

In addition, the underground closed body by the closed intermediate support and horizontal steel pipe does not use anchors to resist the earth pressure acting radially, so it is possible to construct more economical non-opening underground structures.

1a is a non-interleaved construction diagram of a conventional underground passage;
1b is a construction view of a horizontal pipe and a support material constructed in a conventional tunnel shaft;
2a and 2b are a construction flow chart and a perspective view of a non-intercepted underground structure using the closed intermediate support of the present invention;
3a, 3b, 3c and 3d are perspective views of the construction of a non-intercepted underground structure using the closed intermediate support of the present invention;
Figure 3e shows a construction diagram of a non-intercept underground structure manufactured using the method for constructing a non-intercept underground structure using a closed intermediate support of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art can easily implement them. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

Throughout the specification, when a part "includes" a certain element, it means that other elements may be further included, rather than excluding other elements, unless otherwise stated.

[Method of constructing non-intercepted underground structure 100 using the closed intermediate support 120 of the present invention]

Figure 2a is a construction flow chart of the non-opening underground structure 100 using the closed intermediate support 120 of the present invention, Figure 2b is a non-opening underground structure 100 using the closed intermediate support 120 is a perspective view showing the configuration , Figures 3a, 3b, 3c and 3d show a perspective view of the construction of a non-intercepted underground structure using the closed intermediate support of the present invention.

As shown in FIGS. 3A and 3E , the non-interleaved underground structure 100 is a closed box-shaped underground structure that is extended to cross roads, railways, etc. in the underground.

That is, it is constructed (non-excavated) so that all or part of the road and railroad and the surrounding ground are not excavated so as not to prevent the operation of the road and railroad while having a minimum cover height in the ground under the road or railroad. It is constructed while excavating the ground between the starting point and the end point of the structure.

Therefore, when excavating the ground in the underground, the inside of the excavation is to effectively support the earth pressure because the collapse due to the earth pressure may occur. is constructed first, and a closed intermediate support 120 and a wedge-shaped press-in port 130 are used to support the earth pressure acting on the underground closure body (A).

That is, in the prior art, in order to use a loop-type press-in body such as a horizontal steel pipe 110 as a part of a non-interleaved underground structure, reinforcing bars are assembled and installed in an opening formed by cutting the side, and concrete is poured. There is a limit that can only be lowered.

Accordingly, the present invention uses a closed-type intermediate support 120 and a wedge-type press-in port 130 to secure flexural rigidity against earth pressure acting on the underground closed body (A) constructed by connecting the horizontal steel pipe 110 to each other. This eliminates the work of opening the side of the horizontal steel pipe and reinforcing reinforcing bars.

Specifically, as shown in FIG. 2b, a plurality of ring-shaped closed intermediate supports 120 are installed along the inner surface of the underground closed body (A) by the horizontal steel pipe 110 horizontally inserted into the ground in the shape of a closed cross-section. However, by using the wedge-type press-in port 130 to rigidly join the closed intermediate support 120 and the horizontal steel pipe 110 to secure the efficiency of load transmission, the underground structure can be used as it is, but as an aesthetic finishing work, the underground By finishing the inner surface of the closed body (A) and the closed intermediate support 120, it is possible to construct it quickly and stably.

Accordingly, first, as shown in FIGS. 2a and 2b, a horizontal steel pipe 110 is horizontally inserted in the underground (G) from the front to construct the underground closed body (A) (s110).

According to the extension length of the underground structure 100, the horizontal steel pipe 110 can be horizontally inserted in the underground by constructing a vertical shaft at the starting point and the end point of the underground structure (the entire construction target including the non-opening underground structure) according to the extension length. A construction space is formed in advance, and the inside of the horizontal steel pipe 110 is excavated and press-fitted forward to be horizontally inserted into the ground.

The horizontal steel pipe 110 may use a round steel pipe, and it is inserted by pressing it forward while excavating and excavating the ground inside the horizontal steel pipe using the one having a certain diameter that can accommodate the rotary excavator inside.

Up to 100m can be inserted at a time, and the drill bit of the rotary excavator can be changed according to the ground, and the underground closed body (A) is a horizontal steel pipe body completed by connecting the horizontal steel pipes 110 to each other. It is closed and serves to prevent collapse even when the inner space is excavated.

At this time, the construction diagram and the connection configuration of the horizontal steel pipe 110 constituting the underground closure body (A) are shown in Figs. 3a, 3b, and 3c.

That is, the horizontal steel pipe 110 is shown in Figs. 3a and 3b,

It can be seen that by using the guide connection part formed on the side, the construction can be performed while being connected to each other and spaced apart.

At this time, when the horizontal steel pipe 110 is constructed so that the sides are in contact with or overlapping each other, it is advantageous to secure water-repellent properties, but the number of horizontal steel pipes 110 required by that amount is increased, and ancillary work such as cutting is required.

Accordingly, it can be seen that the present invention uses the female connector 111 and the male connector 112 as a guide connection part on the side of the horizontal steel pipe 110, as shown in FIG. 3b.

According to FIG. 3b, the female connector 111 is spaced apart from the side of the horizontal steel pipe 110 and is formed of a horizontal connector pipe 111a having a side slit 111b on one side,

It can be seen that the male connector 112 uses an inner connector 112a having a smaller diameter than the horizontal connector 111a and an insertion connecting plate 112b integrally formed on the side of the inner connector 112a. have.

Accordingly, it is also possible to further construct a water-order pile 113 around the guide connection part in order to secure water-tightness of the female connector 111 and the male connector 112 connected to each other located at the connection part of the horizontal steel pipe 110, and The inside of the connected female connector 111 and the male connector 112 may be finished with a grouting material.

As a result, in the present invention, it can be seen that the female connector 111 and the male connector 112 may be used as a guide connection part on the side of the horizontal steel pipe 110, but an arc-shaped connection plate 114 may be used as shown in FIG. 3C .

That is, in this case, it is not necessary to use the order pile 113, but it can be used together. have.

At this time, it can be seen that the underground closed body (A) is connected and constructed in a square closed cross section corresponding to the cross-sectional shape of the non-intercepted underground structure 100 as shown in FIG. 3A .

That is, it can be seen that the horizontal steel pipe 110 of the underground complex (A) is constructed in the form of a closed square cross-section as an upper horizontal steel pipe 110a, both side horizontal steel pipes 110b, and a lower horizontal steel pipe 110c. It can be seen that the female connector 111 and the male connector 112 are connected to each other by a guide connection part or an arc-shaped connection plate 114 .

Next, as shown in FIGS. 2A and 2B, a plurality of closed-type intermediate supports 120 are excavated and installed on the inner surface of the exposed underground closure body (A) spaced apart from each other (s120).

That is, earth pressure is generated over the entire closed square cross-section as an upper horizontal steel pipe (110a), both side horizontal steel pipes (110b), and a lower horizontal steel pipe (110c) constituting the horizontal steel pipe (110) in the underground closed body (A). In order to effectively resist this, a closed-type intermediate support 120 is used.

That is, the closed-type intermediate support 120 is, as shown in FIG. 3a, an upper horizontal steel pipe 110a, both side horizontal steel pipes 110b, a lower horizontal steel pipe ( As 110c), it can be seen that many are installed spaced apart from each other in the extension direction of the underground closure body (A) as a steel and precast member manufactured to continuously contact the inner surface of the closed square cross-section.

That is, the earth pressure acting on the horizontal steel pipe 110 of the underground coalescence body (A) continuously acts radially in the extension direction of the horizontal steel pipe 110, so the closed type is closed in a ring shape on the inner surface of the horizontal steel pipe 110. The intermediate support 120 acts as a plurality of point parts supporting the transmitted earth pressure, and the horizontal steel pipe 110 positioned between the closed intermediate support 120 and the closed intermediate support 120 is applied to the working earth pressure. Since both ends are supported by the closed intermediate support 120 as a support member, it is possible to have a more effective earth pressure support performance.

As shown in Figs. 2a and 2b, the closed-type intermediate support 120 may use a steel frame member in the case of steel, but the present invention may also be installed using a reinforced concrete member as a block member.

At this time, the inner surface of the horizontal steel pipe 110 of the underground closure body (A) is a curved surface, whereas the closed intermediate support 120 is a steel and the surface of the precast member is usually a horizontal plane, so even if it is constructed so as to be in contact with each other, it is not interviewed.

That is, there are many cases in which portions that are in contact with each other are in pre-contact. In addition, due to a construction error, the inner surface of the horizontal steel pipe 110 of the underground enclosure (A) and the closed intermediate support 120 are not in close contact with each other.

Accordingly, the present invention is not installed in a form in which the closed intermediate support 120 is simply in contact with the inner surface of the horizontal steel pipe 110 of the underground closure body (A), but receives the earth pressure completely and resists it in a closed form. A wedge-shaped press-in port 130 is used.

Next, as shown in FIGS. 2a and 2b, the closed-type intermediate support 120 using the wedge-shaped press-in port 130 is constructed so that the closed-type intermediate support 120 is strongly bonded to the underground closure body A (s130).

Figure 3d shows an installation view of the wedge-shaped press-in port 130 of the present invention.

The wedge-shaped press-in port 130 has a wedge function, and the portion in contact with the horizontal steel pipe 110 formed in a curved surface is formed in a curved surface corresponding to it, and the portion in contact with the closed intermediate support 120 formed in the horizontal surface is It is formed in a horizontal plane corresponding to this, and two wedge-shaped press-in ports 130 are inserted from both sides of the portion in contact with the closed intermediate support 120 and the horizontal steel pipe 110 so that installation is possible with a simple operation. The horizontal steel pipe 110 and the closed-type intermediate support 120 are inserted into the interstitial space of the contact area and installed.

As a result, the load from the horizontal steel pipe 110 can be transmitted more stably while being distributed to the closed intermediate support 120 by the wedge-shaped indentation port 130, so that the present invention can achieve this by the wedge-shaped press-in port 130. This is referred to as a strong interview (interview state).

At this time, since the underground closure body (A) is first constructed, and the closed-type intermediate support 120 is installed in a ring shape along the inner surface of the underground closure body (A), it is difficult and dangerous to weld the contacting part. The underground closure body (A) of the present invention is also easy to install, and when a crimping jack such as a U-shaped clamp is used as an auxiliary, the insertion operation and position setting are facilitated.

This wedge-shaped press-in port 130 does not need to do all the parts where the underground closure body (A) and the closure-type intermediate support 120 are in contact, and it is necessary to install a plurality of them within the range where the load can be transmitted, so economic feasibility can also be secured. there will be

The earth pressure acting as a result can be radially resisted in the closed state of the horizontal steel pipe 110, and when all of these earth pressures are resisted by the underground closure body (A), the cross-sectional size of the geological closure body (A) increases. becomes inefficient.

When the closed-type intermediate support 120 and the horizontal steel pipe 110 are rigidly joined using the wedge-type press-in port 130, the closed-type intermediate support 120 serves as a support point for the bending moment due to earth pressure, and the wedge It is possible to secure the stability of load transmission by using the mold press-in port 130 .

At this time, a friction pad 131 is further installed on the curved surface in contact with the underground closed body A formed as a curved surface, as shown in FIG. 3D , so that damage and frictional force can be secured.

In addition, when a filler (C) such as concrete is filled inside the horizontal steel pipe 110 of the underground coalescence body (A), it becomes more effective in supporting the earth pressure.

Next, as shown in FIGS. 2a and 2b, the closed-type intermediate support 120, the horizontal steel pipe 110 filled with the concrete C of the underground coalescence A, and the wedge-shaped press-in port 130 are closed. (s140).

That is, the wedge-shaped press-in port 130 and the closed intermediate support 120 stably support the horizontal steel pipe 110 of the underground compact (A) filled with concrete, so that it functions as an underground structure by itself, The horizontal steel pipe 110, the wedge-shaped press-in port 130, and the closed intermediate support 120 are exposed, so the final unopened underground structure ( 100) will be completed.

[Uncut underground structure 100 manufactured using the method of constructing a non-intercepted underground structure using the closed intermediate support of the present invention]

3a and 3e show construction drawings of the non-intercept underground structure 100 manufactured using the method for constructing a non-intercept underground structure using a closed intermediate support of the present invention.

That is, the non-interleaved underground structure 100 is

As shown in Figure 2b, the underground closure body (A) is constructed by horizontally inserting the horizontal steel pipe 110 into the underground (G) in the front, and the closure type intermediate support 120 is excavated and exposed underground ( A) After installing a plurality of spaced apart on the inner surface, and using the wedge-type press-in port 130 to make the closed intermediate support 120 strongly contact each other to the underground closed body (A), the closed intermediate support 120 The horizontal steel pipe 110 and the wedge-shaped press-in port 130 filled with concrete of the underground closure body (A) are finished and constructed.

As shown in Fig. 3a, the non-intersecting underground structure 100 can be formed as a closed non-interleaved structure with a rectangular cross section. Since most of the underground structures are constructed in this cross-sectional form, the horizontal steel pipe of the closed underground body (A) filled with concrete It can be seen that the construction is carried out with the order pile 113 and the arc-shaped connecting plate 114 around the 110 .

The order pile 113 is constructed by a multi-stage grouting method of steel pipe, and the reinforcing core material 115 is further inserted therein to enable the order effect and rigidity to be secured.

In addition, the closed intermediate support 120 is installed by assembling and installing precast modules and steel frame members manufactured at the factory to use the underground structure as it is by welding, bolting, etc. During excavation, many are installed spaced apart from each other. As a result, the excavation surface is continuously excavated forward as a makjang.

At this time, according to FIG. 3A , it can be seen that when the lateral width is extended long, the inner intermediate support 121 is further installed.

At this time, the inner intermediate support 121 is to be supported on the bottom of the closed intermediate support 120 with the upper support 123 arranged in the extension direction of the underground closure body (A) at the upper end of the vertical support member 122, and the lower end It can be seen that it can be finally supported by the upper support 123 and the installed lower support 124 while maintaining the length adjustment and tension using the jack support 125 and can be finished with the central wall of the underground structure.

At this time, the jack support 125 is installed alternately at the lower end or upper end of the vertical support member 122 to ensure the supporting performance.

In addition, it can be seen that the closing panel 126 is closed between the closed intermediate support 120 and the closed intermediate support 120 .

Next, it can be seen that the non-interleaved underground structure 100 can be formed as a closed non-interleaved structure of a horseshoe-shaped cross section as shown in FIG. 3E. It can be seen that the arc-shaped connecting plate 114 is being constructed.

Accordingly, the order pile is constructed in a multi-stage grouting method of steel pipe, and the reinforcement core 115 is further inserted therein to enable the order effect and rigidity to be secured.

In addition, the closed intermediate support 120 is also finally installed in a horseshoe shape, and the precast module and steel member manufactured at the factory are assembled and installed through welding and bolting at the site to use the underground structure as it is, and horizontal steel pipe ( 110), while excavating the inner space forward, a plurality of them are installed to be spaced apart from each other. As a result, the excavation surface is continuously excavated forward as a makjang.

At this time, unlike FIG. 3a, the inner intermediate support 121 is not installed, but of course it can be installed.

Also, it can be seen that the closing panel 126 is closed between the closed intermediate support 120 and the closed intermediate support 120 .

Therefore, the underground closure body (A) is first completed through the starting point and the end point part to form a makjang, and the closing type intermediate support 120 is inserted into the wedge-type press-in port while excavating the internal space of the burial closure body (A) to form a makjang. By repeating the operation of rigid welding using 130, the non-interleaved underground structure 100 of the present invention according to the extended length is completed.

The above description of the present invention is for illustration, and those of ordinary skill in the art to which the present invention pertains can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a dispersed form, and likewise components described as distributed may be implemented in a combined form.

The scope of the present invention is indicated by the following claims rather than the above detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention. do.

100: Unopened underground structure
110: horizontal steel pipe 110a: upper horizontal steel pipe
110b: both side horizontal steel pipe 110c: lower horizontal steel pipe
111: female connector 111a: horizontal connector
111b: side slit 112: male connector
112a: inner connection pipe 112b: insertion connection plate
113: order file 114: arc connection plate
115: reinforcing core 120: closed intermediate support
121: internal intermediate support 122: vertical support member
123: upper support 124: lower support
125: jack support 126: finish panel
130: wedge-shaped press inlet 131: friction pad
A: geological coalescence

Claims (10)

(a) horizontally inserting the horizontal steel pipe 110 in the underground (G) in front of the underground to construct the underground closed body (A);
(b) installing a plurality of spaced apart on the inner surface of the underground closed body (A) exposed by excavating the closed-type intermediate support (120); and
(c) using the wedge-shaped press-in port 130 to construct the closed intermediate support 120 to be rigidly connected to each other to the underground closed body (A);
The wedge-shaped press-in port 130 of step (c) has a wedge function, and the portion in contact with the horizontal steel pipe 110 formed in a curved surface is formed in a curved surface corresponding to it, and a closed-type intermediate support formed in a horizontal surface ( The portion in contact with 120 is formed in a horizontal plane corresponding thereto, and two wedge-shaped press-in ports 130 from both sides of the portion in contact with the closed intermediate support 120 and the horizontal steel pipe 110 are installed in the horizontal steel pipe 110. The closed intermediate support 120 is inserted into the interstitial space of the contact area with the closed intermediate support 120, and the closed intermediate support 120 is rigidly welded to the underground closure body (A) without being welded to each other so that it is in an interview state. Using a closed intermediate support A method of constructing an unexploited underground structure. The method of claim 1,
The lipid lung of step (a) (A) is
Non-opening ground using a closed intermediate support to be formed in a closed form by the horizontal steel pipe 110 connected to each other using the female connector 111 and the male connector 112 as a guide connection part on the side of the horizontal steel pipe 110 Structure construction method. 3. The method of claim 2,
The guide connection part
A female connector 111 formed of a horizontal connection pipe 111a having a side slit 111b on one side is installed to be spaced apart from the side of the horizontal steel pipe 110,
A male connector 112 including an inner connecting pipe 112a having a smaller diameter than the horizontal connecting pipe 111a and an insertion connecting plate 112b integrally formed on the side of the inner connecting pipe 112a is installed,
A method of constructing a non-interleaved underground structure using a closed intermediate support that is made by closing the inside of the female connector 111 and the male connector 112 connected to each other with a grouting material. 4. The method of claim 3,
Using a closed intermediate support to secure water-repellent performance by further constructing a water-reinforcement pile 113 constructed to form a reinforcing core 115 around the guide connection part composed of the female connector 111 and the male connector 112. A method of constructing an unexploited underground structure. The method of claim 1,
The lipid lung of step (a) (A) is
A method of constructing a non-intercepted underground structure using a closed intermediate support to be formed in a closed shape by the horizontal steel pipes 110 connected to each other using an arc-shaped connecting plate while internally excavating between the horizontal steel pipes 110 spaced apart from each other. The method of claim 1,
The closed-type intermediate support 120 of step (b) is
Construction of a non-opening underground structure using a closed intermediate support that is formed in a ring shape along the inner surface of the underground body (A) by a horizontal steel pipe 110 horizontally inserted into the ground in the shape of a closed cross-section so that many are installed spaced apart from each other Way. 7. The method of claim 6,
The closed type intermediate support 120 is a closed type in which a precast module or a steel frame member is assembled and installed at the site to use the underground structure as it is, and a plurality of them are installed spaced apart from each other while excavating the inner space of the underground closed body (A) forward. A method of constructing an unopened underground structure using an intermediate support. 8. The method of claim 7,
A closed-type intermediate support 120 extending long in the transverse direction is further installed with an inner intermediate support 121, and the inner intermediate support 121 is
The upper end of the vertical support member 122 is supported on the bottom surface of the closed intermediate support 120 with the upper support 123 disposed in the extension direction of the underground closure body (A), and the lower end is lengthened using the jack support 125. A method of constructing a non-opening underground structure using a closed intermediate support that is finally supported by the upper support 123 and the installed lower support 124 while maintaining adjustment and tension, and is closed with the central wall of the underground structure. 9. The method of claim 8,
The jack support 125 is installed alternately on the lower end or upper end of the vertical support member 122 to ensure support performance, and the closed intermediate support 120 and the closed intermediate support 120 are closed. A method of constructing a non-opening underground structure using a closed intermediate support that is closed with a panel (126). The method of claim 1,
The underground closure body (A) is formed in a rectangular cross-section or a horseshoe-shaped cross-section,
In the horizontal steel pipe 110 of the underground complex (A), a filler containing concrete is further formed,
A method of constructing a non-opening underground structure using a closed-type intermediate support that enables damage and frictional force to be secured by further installing a friction pad 131 on the curved surface in contact with the underground closed body (A) formed as a curved surface.

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