WO2013133546A1

WO2013133546A1 - Method for constructing underground tunnel

Info

Publication number: WO2013133546A1
Application number: PCT/KR2013/001275
Authority: WO
Inventors: 김동우; 김동수
Original assignee: Kim Dong Woo; Kim Dong Su
Priority date: 2012-03-09
Filing date: 2013-02-19
Publication date: 2013-09-12
Also published as: KR101161332B1

Abstract

The present invention relates to a method for constructing a trenchless underground tunnel and, particularly, to a method for constructing an underground tunnel, comprising: inserting a slab support structure into a square pipe assembly for a slab which is formed by horizontally inserting, into the ground, a plurality of square pipes that have a simple structure and are easily assembled and disassembled, and depositing concrete to form a slab; and inserting a wall support structure into a square pipe assembly for a wall which is formed by vertically inserting the plurality of square pipes into the ground, and depositing concrete to form a wall, whereby the installation of strut beams, floor posts, and molds for supporting a structure and preventing subsidence are not needed, and the underground tunnel can be quickly, accurately, and firmly constructed.

Description

[Revision based on Article 26 of Rule 08.03.2013] Construction method of underground tunnel

The present invention relates to a construction method of a non-removable underground tunnel, specifically, a simple structure, easy to assemble, easy to disassemble a plurality of rectangular tube to form a square tube composite for the slab and square tube composite for the wall, The present invention relates to a construction method of an underground tunnel that can be installed quickly, accurately, and firmly by inserting a support structure into the rectangular tube composite and placing concrete.

The construction methods for constructing tunnels, underground roads, and the like through cross-sections under roads and railways include open and closed methods. Opening method is a method of digging the ground from the ground and installing the structure and refilling the soil.The structure can be installed in the internal space after the excavation, so it can be stably constructed. In order to solve this problem, a number of non-opening methods have been developed and used to install underground structures directly from the side without occupying the road.

Non-adhesive methods include representative dog-artificial methods and pipe loop methods. The hull prosthesis method is a method of pushing the enclosure to the construction site using a hydraulic jack after manufacturing the concrete enclosure.It has the advantage of easy to modify the track due to the small amount of excavation, and the quality control of the concrete enclosure is easy and accurate construction is possible. Since the shear surface is precast concrete, it is impossible to change the direction or incline while towing the enclosure.As the size of the enclosure increases, the traction is restricted and the size of the workshop is large. This becomes difficult. In addition, soil is easily lost at the corners of the housing during towing, and there is a risk of leakage if the connection between the housings is insufficient, and earthwork structures may be caused by the gap between the load of the enclosure and the temporary steel pipe installed in the ground for towing the enclosure. There is a problem that there is a fear of settlement.

As an example of a pipe roof structure method developed to improve the problems of the hull prosthesis method, there is a 'method of constructing a steel pipe roof structure' of the application No. 10-2005-0057812 filed on June 30, 2005. . The present invention comprises the steps of excavating the ground to the propulsion rail surface position to build a propulsion base and temporary facilities; Constructing a propulsion rail portion and a reaction force wall on the propulsion rail surface; Manufacturing a guide center steel pipe of the steel pipe loop structure; Surveying a position at which the guide-centered steel pipe is propelled; Installing a propulsion facility for promoting the guide-centered steel pipe, and pushing and injecting the guide-centered steel pipe using the propulsion facility; When the propulsion of the guide-centered steel pipe is completed, removing and checking the propulsion facility; Manufacturing steel pipes of a general section sequentially connected to the guide-centered steel pipe; Installing a propulsion facility for propelling the steel pipes of the general section, and pushing and injecting the steel pipes using the propulsion facility; Sequentially excavating the inside of the steel pipe loop structure formed by the guide-centered steel pipe and the general section steel pipes, and constructing gibs; Constructing the structure by spraying mortar spray to the inside of the steel pipe roof structure or by pouring concrete into the formwork; forming a groove in one side of the steel pipe in a horizontal direction, and the other side by The steel pipe press-fitting method forms the steel pipe slab and excavates the inside without additional transverse support by maximizing the lateral stiffness by connecting the various steel pipes to the neighboring state to each other by installing angles to be engaged. The present invention has the advantage that the steel pipe is promoted by using a guide rail, integral precision construction is possible, and stability is secured by engaging with adjacent steel pipes adjacent to each other to increase rigidity. However, the present invention has to separately install a support in the interior of the steel pipe to support the curved structure of the steel pipe, there is a problem that the stability and installation of the support is not easy as the support is installed on the inclined surface, shown in Figure 1 As described above, the steel pipe loop structure cannot be formed at the center lower portion of the steel pipe loop structure, so that the structure may not be firm, and ground may be subsided, and after the installation of the steel pipe loop structure, parallel support 910 and vertical support 920, the slope support 930 is installed separately and have to be demolished when working the gulto structure there is a problem that the complexity of the construction and the air is long.

In order to solve the above problem, there is a 'pipe loop and a construction method thereof' of an application No. 10-2008-0031795 filed on April 4, 2008, and FIGS. 2 to 3 illustrate the 'pipe loop and its construction method'. The construction cross section according to. The pipe and the construction method thereof are made of a combination of unit panels having an arc cross section of pipes, and coupling protrusions and couplings for joining other adjacent unit panels and other adjacent pipes at both ends of each unit panel. A first step of press-fitting the pipe in the direction of the reaching base from the forward base using a pipe having grooves formed therein and the unit panel having an arc-shaped cross section; A second step of connecting the left or right panel rear end of the press-fitted pipe and the right or left panel front end of the pipe to be added in a straight line; Press-fitting the pipe to be added to push the left or right panel of the press-fitted pipe and simultaneously joining the press-fitted pipe, and separating the left or right panel protruding toward the arrival base from the added pipe; A fifth step of horizontally connecting the plurality of pipes by repeating the second to fourth steps; A sixth step of connecting the rear panel lower end of the pipe pressed in the leftmost and the rightmost and the upper panel front end of the pipe to be added in a straight line; A seventh step of press-fitting the pipe to be added to push the lower panel of the press-fitted pipe and simultaneously join the press-fitted pipe; An eighth step of separating the lower panel protruding toward the reaching base from the added pipe; And a ninth step of connecting the plurality of pipes vertically by repeating the sixth to eighth steps.

'Piperoof and its construction method' of Korean Patent Application No. 10-2008-0031795 can easily remove overlapping portions of adjacent pipes by using a pipe made of a combination of unit panels, and recycle the removed unit panels. There is an advantage that it can. In addition, it is easy to combine between the unit panels and excellent bonding force, by using a reinforcement means consisting of a horizontal reinforcement beam and a vertical reinforcement beam, there is no fear of ground subsidence during construction, it is possible to minimize the height of the structure including the pipe loop There is an advantage.

However, the 'pipe loop and its construction method' is a unit panel (220, 330, 340) located inside the reinforcement means 500, as shown in Figures 2 to 3 after removing the earth and sand of the space surrounded by the pipe loop Process of removing the formwork after removing the formwork after constructing the structure by installing the formwork 600 after installing the formwork 600 inside the reinforcing means from which the unit panel is removed. The disadvantage is that the air is long. In addition, the structure of the coupling protrusion and the coupling groove of the pipe consisting of the combination of the unit panels having an arc-shaped cross section is difficult to combine and dismantle, there is a problem that it is very difficult to work horizontally and vertically of the structure.

The present invention is to solve the problems of the prior art, it is to provide an underground tunnel construction method that can shorten the air required for installation because the structure of the press-fitted pipe is simple and easy to combine and dismantle.

In addition, it is to provide an underground tunnel construction method that is structurally robust and excellent in stability even without installing a support structure such as a support beam to dig the inside of the underground tunnel.

In addition, it is intended to provide an underground tunnel construction method that does not require the installation of formwork, dongbari, etc. for the installation of structures.

According to the most preferred embodiment of the present invention for solving the above problems, in the method of constructing a tunnel consisting of a slab and a wall supporting the ground in the ground, A. The construction of the slab is a) a reference square pipe in the ground Inserting the step, b) Inserting the connecting square tube in the ground to the left, right of the reference square tube to form a square tube composite for the slab, c) The steel in the horizontal space inside the square tube composite for the slab Inserting a support structure for the slab, d) pouring concrete into the horizontal space in which the support structure is inserted, and then curing; B. The construction of the wall comprises: e) inserting a plurality of square tubes including a connecting square tube into the bottom of the slab square tube composite formed of the reference square tube and the connecting square tubes in the ground to form a square tube composite for walls. F) inserting a wall support structure made of steel into a vertical space inside the wall rectangular tube composite; and g) pouring concrete into the vertical space into which the support structure is inserted, and curing. C. After the construction of the slab and the wall is completed, the inside of the slab and the wall is excavated, and after the bottom concrete is poured, the interior of the tunnel is finished. Consists of a side plate, the upper and lower ends of each of the connecting ribs are formed vertically bent, the connecting ribs are formed at regular intervals The stepped surface corresponding to the connecting ribs is formed on the upper and lower ends of the side plate, and the method of constructing an underground tunnel is provided in the stepped surface corresponding to the fastening hole of the connecting rib.

According to another preferred embodiment of the present invention, there is provided a construction method of an underground tunnel further comprising a reference square tube in the step of forming the square tube complex for the wall of step e).

According to another preferred embodiment of the present invention, the outer side of the connecting square tube corresponding to both ends of the slab further comprises the step of inserting the gallery tube, the inserting step of the gallery tube is the step b) and d) There is provided a construction method for underground tunnels.

According to another preferred embodiment of the present invention, a guide roller for easily inserting the support structure between steps b) and c) and between steps e) and f) is installed on the inner surface of the square tube composite. There is provided a method of construction of an underground tunnel further comprising.

According to another preferred embodiment of the present invention, the connecting rectangular tube is composed of the upper plate, the lower plate, the side plate and the first support; One end of the upper and lower plates is formed with a vertically bent connecting rib, the other end is formed with a U-shaped ring, the inner side of the connecting rib and the U-shaped ring is formed with a fastening hole at regular intervals; Stepped surfaces corresponding to the connecting ribs are formed on upper and lower ends of the side plates, and fastening holes corresponding to the fastening holes of the connecting ribs are formed on the stepped surfaces; A stepped surface corresponding to the U-shaped ring is formed on the upper and lower ends of the first support, and a method of constructing an underground tunnel is provided in the stepped surface corresponding to the fastening hole formed inside the U-shaped ring. .

According to another preferred embodiment of the present invention, the connecting rectangular tube is further formed with a protruding rib in the center of the upper plate and the lower plate, a second support is further installed between the upper and lower protruding ribs, the second support is the upper There is provided a construction method of an underground tunnel in which an insertion groove into which the protruding rib is inserted is formed at the bottom thereof.

According to another preferred embodiment of the present invention, the coupling between the square tube in the step of forming the square tube complex for the slab of step b) and the square tube composite for the wall of step e), The method of constructing an underground tunnel by removing the side plate of the inserted rectangular tube to protrude the connecting rib and inserting the adjacent rectangular tube into the ground while inserting the U-shaped ring of the adjacent rectangular tube to be coupled to the connecting rib. This is provided.

According to another preferred embodiment of the present invention, the step c) is the step of removing the first support or the first and second support step by step while simultaneously inserting the support structure for the slab, step f) is the first There is provided a method of constructing an underground tunnel, in which one support or first and second supports are removed step by step and at the same time a support structure for a wall is inserted step by step.

According to another preferred embodiment of the present invention, in the method of constructing a tunnel consisting of a slab and a wall supporting the ground, A. Construction of the slab comprises the steps of: a) inserting a reference square tube in the ground, b A step of forming a square tube composite for slab by inserting a connecting square tube into the ground to the left and the right of the reference square tube; c) inserting a precast concrete slab into a horizontal space inside the square tube composite for the slab; d) grouting with grout material between the horizontal space and the inserted precast concrete slab; B. The construction of the wall comprises: e) inserting a plurality of square tubes including a connecting square tube into the bottom of the slab square tube composite formed of the reference square tube and the connecting square tubes in the ground to form a square tube composite for walls. F) inserting a precast concrete wall into the vertical space inside the rectangular wall composite for wall, g) grouting with grout material between the vertical space and the inserted precast concrete wall, C. After the construction of the slab and the wall is completed, the construction method of the underground tunnel is provided, which includes the steps of excavating the interior of the slab and the wall, pouring the floor concrete and finishing the interior of the tunnel.

According to another preferred embodiment of the present invention, the grout material is provided with a construction method of an underground tunnel is a non-shrink mortar.

According to another preferred embodiment of the present invention, the step of finishing the interior of the tunnel is provided with a method of constructing an underground tunnel including a step of attaching a finish to the inner surface of the tunnel or spraying the inner surface.

The present invention uses a rectangular tube that is easier to secure a cross section than a conventional circular tube, and there is no fear of ground subsidence that is frequently generated in the conventional pipe loop method by inserting a support structure into a rectangular tube composite composed of a plurality of rectangular tubes, The advantage is that it does not require the installation of supporting supports for internal soil excavation.

In addition, the slab and the wall can be perfectly formed without installing the formwork and the copper bar, which can reduce the air, secure safety and reduce the construction cost.

1 is a construction cross-sectional view of a steel pipe loop structure according to the prior art.

2 to 3 is a cross-sectional view of the construction of a pipe loop structure according to the prior art.

Figure 4 is a perspective view of one embodiment of a square tube according to the present invention.

5 to 6 is a perspective view of another embodiment of a rectangular tube according to the present invention.

Figure 7 is a perspective view of one embodiment of a square tube composite for slab according to the present invention.

8 is a cross-sectional view of an embodiment of a method for inserting a support structure for a slab according to the present invention.

9 is a cross-sectional view of an underground tunnel according to an embodiment of the method for constructing an underground tunnel according to the present invention.

In order to achieve the above object, the present invention provides a method for constructing a tunnel consisting of a slab and a wall supporting the ground, A. The construction of the slab, a) inserting a reference square tube in the ground, b A) forming a square tube composite for slab by inserting a connecting square tube into the ground to the left and right sides of the reference square tube; c) inserting a slab support structure made of steel into a horizontal space inside the square tube composite for the slab; And d) pouring concrete into the horizontal space into which the supporting structure is inserted, and curing the concrete. B. The construction of the wall comprises: e) inserting a plurality of square tubes including a connecting square tube into the bottom of the slab square tube composite formed of the reference square tube and the connecting square tubes in the ground to form a square tube composite for walls. F) inserting a wall support structure made of steel into a vertical space inside the wall rectangular tube composite; and g) pouring concrete into the vertical space into which the support structure is inserted, and curing. ; C. When the construction of the slab and the wall is completed, the interior of the tunnel after finishing the slab and the wall and the bottom concrete, and the interior of the tunnel is made, the reference square tube is made of a top plate and a bottom plate and several side plates The connecting ribs are vertically bent at each end of the upper and lower plates, and fastening holes are formed at regular intervals on the connecting ribs, and stepped surfaces corresponding to the connecting ribs are formed at the upper and lower ends of the side plates. On the stepped surface, a fastening hole corresponding to the fastening hole of the connecting rib is formed.

Hereinafter, with reference to the accompanying drawings an embodiment of the present invention will be described in detail. However, in describing the present invention, when the technical concept of the present invention is obscured or obscured by describing the known configuration in detail, the description of the known configuration will be omitted.

The method of constructing the underground tunnel of the present invention can be largely divided into the method of constructing the slab 100 and the method of constructing the wall 200. The slab 100 is a) inserting the reference square tube 10 into the ground, b) the square tube for the slab by inserting the connecting square tube 20 to the ground to the left and right of the reference square tube 10 Forming a composite 40, c) inserting a slab support structure 41 made of steel into a horizontal space inside the square tube composite 40 for the slab, d) the horizontal space into which the support structure is inserted After pouring concrete into the, it consists of curing step.

a) inserting the reference square tube 10 into the ground (S1)

4 is a perspective view of one embodiment of a reference square tube. As shown in FIG. 4, the reference square tube 10 includes an upper plate 11, a lower plate 12, and several side plates 13. Connection ribs 14 bent vertically at each end of the upper plate 11 and the lower plate 12 are formed, and the connecting ribs 14 are provided with fastening holes at regular intervals. The connecting ribs 14 are formed to be elongated in the longitudinal direction, and stepped surfaces 13 ′ corresponding to the connecting ribs 14 are formed at upper and lower ends of the side plates 13, and the side plates 13 are upper plates. It can be inserted between the 11 and the lower plate 12. In addition, a fastening hole corresponding to the fastening hole of the connecting rib 14 is formed in the step surface 13 ′ formed on the side plate 13 so that the reference square tube 10 may be tightly coupled by a fastening means such as a bolt. have.

When the reference square tube 10 is inserted into the upper center portion of the construction surface, it is possible to reduce the error on the horizontal plane as compared to the upper left and right sides of the construction surface. Therefore, the reference square tube 10 is preferably inserted in the form of the upper center of the construction surface, that is, the slab 100 is pressed into the ground of the central portion of the horizontal plane to be constructed. The reference square tube 10 means that the slab is a standard square tube to be parallel to the ground, but can not be used only for the construction of the slab, it can also be used for the construction of the wall. In addition, the connecting square tube 20 or another type of square tube may be used instead of the reference square tube 10, but it is easy to insert a rectangular tube having a simple structure as described above to set the standard of the construction surface. And are likely to be less susceptible to sedimentation.

b) inserting the connecting square tube 20 into the ground to the left and the right of the reference square tube 10 to form a square tube composite 40 for the slab (S2)

The connecting square tube 20 is inserted into the left and right ground of the reference square tube 10. 5 to 6 show each embodiment of the connecting rectangular tube 20 of the present invention. In a first embodiment of the connecting square tube, the connecting square tube 20 includes an upper plate 21, a lower plate 22, a side plate 23, and a first support 27. One end of the upper plate 21 and the lower plate 22 is formed with a connecting rib 24 bent vertically, the other end is formed with a U-shaped ring 25, the connecting rib 24 and the U-shaped ring Inside the 25, fastening holes are formed at regular intervals. The U-shaped ring 25 and the connecting rib 24 are formed long in the longitudinal direction, and the U-shaped ring 25 may be inserted into the connecting rib 14 of the reference square tube 10.

Stepped surfaces 23 ′ corresponding to the connecting ribs 24 are formed at upper and lower ends of the side plates 23, such that the side plates 23 are inserted between the upper plate 21 and the lower plate 22. In addition, a fastening hole corresponding to the fastening hole of the connecting rib 24 is formed in the step surface 23 ′ formed on the side plate 23. The U-shaped ring 25 may be supported by the first support 27, and the stepped surface 27 ′ corresponding to the U-shaped ring 25 is provided at the upper and lower ends of the first support 27. The stepped surface 27 ′ is formed with a fastening hole corresponding to the fastening hole formed inside the U-shaped ring 25. The fastening hole formed in the connecting rib 24 of the connecting square tube 20 and the step surface 23 'of the side plate 23 is formed by the connecting square tube 20 being coupled by a fastening means such as a bolt. Fastening hole formed in the inner side of the U-shaped ring 25 of the connecting square tube 20 and the step surface 27 'of the first support 27 is a fastening means such as a bolt. The reference square tube 10 and the connecting square tube 20 to be firmly coupled. The reference square tube 10 and the connecting square tube 20 is appropriately sized in consideration of securing a smooth working space in the interior for separating and removing side plates accompanying the press-fitting of adjacent square tubes and the ground state of a construction site. Is produced.

The top plate, the bottom plate and the side plate included in the reference square tube, the connecting square tube, and the basic square tube to be described later are named to facilitate understanding, based on the case where the square tube is placed as shown in FIG. 4. Therefore, it is not limited to the meaning of the upper and lower terms themselves, and in some cases, the side plate of the rectangular tube may be used to be located above or below. For example, when the connecting rectangular tube is used for the slab construction, the upper or lower plate is inserted with the upper side facing upward. When the connecting rectangular tube is used for the construction of the wall, the upper and lower plates are facing left and right. Can be inserted from

In one embodiment of the present invention, the coupling between the

rectangular tubes

10 and 20 is connected to the

ribs

14 and 24 by removing the

side plates

13 and 23 of the

rectangular tubes

10 and 20 previously inserted into the ground. After protruding, while inserting the U-shaped ring 25 of the adjacent rectangular tube 20 to be coupled to the connecting

ribs

14 and 24, the adjacent rectangular tube 20 is inserted into the ground. In the square tube composite 40 for slab formation is as follows.

In order to insert the connecting square tube 20 into the left and right ground of the inserted reference square tube 10, first, an end portion of which the U-shaped ring 25 of the connecting square tube 20 to be connected is formed is a reference square. The position of the connecting rectangular tube 20 is determined to face the tube 10. Next, while removing the side plate 13 of the side in which the connecting square tube 20 is inserted from the side plate 13 of the reference square tube 10, the connecting square tube to the connecting rib 14 of the reference square tube 10 The U-shaped ring 25 of 20 is fitted so that the connecting square tube 20 is inserted into the ground. The side plate 13 may be removed by the connection square tube 20 is inserted in the front to push the side plate 13 to the rear. Since the U-shaped ring 25 is inserted into the connecting rib 14 of the reference square tube 10, when the reference square tube 10 is accurately inserted into the ground, the connecting square tube 20 is simply sequentially Since the horizontal can be maintained by inserting in the ground, it is possible to easily minimize the horizontal deviation of the slab 100 to be formed in the future. The reference square tube 10 and the connecting square tube 20 to be inserted may complement the coupling force between the square tubes by welding the upper and lower contact portions of the two square tubes.

Since the first support 27 of the connecting rectangular tube 20 to be inserted prevents the coupling with the reference square tube 10, it is preferable to dismantle it in advance. The connecting rectangular tube 20 to be inserted is the reference square. After inserting the left and right sides of the pipe 10, the first support 27 is installed to prevent the

top plates

11 and 21 from sagging by the ground. The installation interval of the first support 27 is determined in consideration of the traffic volume of the upper ground, the length of the tunnel and the depth from the ground, etc., the first support 27 is connected to the rectangular tube using a fastening means such as bolts 20 and the reference square tube 10 can be firmly fixed.

The other connection square tube is inserted into the other end of the inserted connection square tube 20, and the insertion connection square tube 20 is removed while removing the side plate 23 of the connection square tube 20 inserted as above. The U-shaped ring 25 of the next connecting square tube to be connected to the connecting rib 24 is inserted while being inserted. The operation is repeated several times at the left and right sides of the reference square tube 10 to complete the square tube composite 40 for the slab as shown in FIG. 7.

As a second embodiment of the connecting rectangular tube 20 which is connected to the side of the reference square tube 10, as shown in Figure 6, protruding ribs 26 in the center of the upper plate 21 and the lower plate 22 Is further formed, and a second support 28 is further installed between the upper and lower protruding ribs 26, and the second support 28 is an insertion groove into which the protruding ribs 26 are inserted at the upper and lower ends thereof. (29) is formed so that the shape of the connecting rectangular tube 20 can be maintained firmly. The connecting square tube of the second embodiment has the same structure as that of the connecting square tube of the first embodiment and one reference square tube by the second support 28. In addition, the connecting square tube of the second embodiment One or more reference rectangular tubes may be added to form a connection rectangular tube. When constructing the slab 100 using the connecting square tube, the connecting square tube of the first embodiment may be used according to the construction site situation, such as the type and state of the ground, and the connecting square tube of the first and second embodiments may be appropriately mixed. It is also possible to use a combination of various types of connecting square tubes.

c) inserting the slab support structure 41 made of steel into the horizontal space inside the square tube composite 40 for the slab (S3)

The first and

second support members

27 and 28 installed in the rectangular tube composite 40 for the slab have the

upper plates

11 and 21 of the reference rectangular tube 10 or the connecting rectangular tube 20 sag by underground. In order to prevent this, when only the connecting square tube of the first embodiment is used as the connecting square tube 20 constituting the square tube composite 40 for the slab, the first support stand inside the square tube composite 40 for the slab (27) is present, and when the connecting rectangular tube 20 of the first and second embodiments is appropriately mixed with the connecting rectangular tube 20 constituting the slab rectangular tube composite 40, the slab rectangular tube composite 40 There are first and

second supports

27 and 28 therein.

* In order to insert the support structure 41 for the slab, by removing the first support 27 or the first and

second support

27, 28 to open the interior of the square tube composite 40 for slab to create a horizontal space To form. However, if all of the first support 27 or the first and

second supports

27 and 28 are removed, the

top plates

11 and 21 may sag due to the ground, so the first support 27 or the first and second supports 27 may be sag. It is possible to prevent sagging of the

top plates

11 and 21 by removing the

step

27 and 28 step by step while simultaneously inserting the support structure 41 for the slab step by step.

In the method for removing the first and

second supports

27 and 28, when the first and

second supports

27 and 28 do not have fixing by a fastening means such as a bolt, a hydraulic jack and a towing jack to be described later will be described. As the support structure 41 for the slab is inserted, the first and

second support members

27 and 28 are removed and the slab support structure 41 is simultaneously inserted in the form of pushing the first and

second support members

27 and 28. It is also possible to lose.

The removed first and

second supports

27 and 28 may be recycled and used as it is for other reference rectangular pipes and connecting rectangular pipes, thereby reducing construction costs by reducing members.

The slab support structure 41 inserted into the horizontal space is preferably formed by reinforcing the reinforcing bar to steel, such as H-shaped steel as a plate-like structure, but reinforcing only the reinforcement by structural calculation or unattached PC steel wire for the introduction of prestress or It may also include a sheath tube. Between the steps b) and c), a guide roller 60 for easily inserting the support structure 41 for the slab is installed on the inner surface of the square tube composite 40 for the slab. The guide roller 60 is preferably installed at regular intervals in consideration of the size, workability, economics, etc. of the support structure 41 for the slab, it is preferable to maintain the interval of about 1m, the size of the guide roller 60 is It depends on the size of the square tube and the thickness of the supporting structure. 8 is a cross-sectional view of an embodiment of the method for inserting the support structure for the slab 41 according to the present invention, the hydraulic jack of the propulsion side installed on the reaction wall and the pull jack on the opposite side of the slab support structure 41 Promotion is made.

d) curing the concrete in the horizontal space in which the supporting structure is inserted, and curing (S4).

After the insertion of the slab support structure 41 is completed, the slab 100 is constructed by pouring concrete into the horizontal space, that is, the interior of the slab square tube composite 40, and curing the slab. The concrete injection method by the gallery tube 70 may be used for the concrete pouring, and in this case, between the steps b) and d) of the connection square tube 20 corresponding to both ends of the slab 100. Outside, the gallery tube 70 as shown in Figure 9 may be further included. The gallery tube 70 is inserted to pour the slab concrete, but may be installed at any point between step b) and step d), but the step of installing the square tube composite 40 for the slab in step b) Inserting the gallery tube 70 subsequent to the step S2 is preferred in terms of continuity of the process because it can proceed continuously in connection with the square tube installation process. By placing concrete directly inside the square tube composite 40 for the slab, a separate formwork is not required, and an inner surface of the slab 100 may be formed flat as the square tube is used.

The wall 200 is e) a plurality of square tubes including a connecting square tube 20 at the bottom of the slab square tube composite 40 formed of the reference square tube 10 and the connecting square tube 20 underground Inserting in the wall to form a rectangular tube composite 50 for the wall, f) inserting the wall support structure 51 made of steel into the vertical space inside the rectangular wall composite 50 for the wall, g) supporting After pouring concrete into the vertical space in which the structure is inserted, the step consists of curing.

e) Wall squares by inserting a plurality of square tubes including the connection square tube 20 in the lower portion of the slab square tube composite 40 formed of the reference square tube 10 and the connecting square tube 20 in the ground Forming tube complex 50 (S5)

A rectangular tube composite 50 for walls forming the wall 200 is formed under the slab rectangular tube composite 40. The wall rectangular tube composite 50 is formed by inserting a plurality of rectangular tubes including the above-described rectangular tube 20 into the ground.

In one embodiment for forming the wall square tube composite 50, in addition to the connection square tube 20, the reference square tube 10 may be further included, the reference square tube 10 is a wall square tube composite It is first inserted into the ground to form 50. The reference square tube 10 is inserted to contact the lower surface of the square tube composite 40 for the slab, and remove the side plate 13 of the square tube of the shape of the reference square tube 10 inserted and the side plate is removed As the U-shaped ring 25 of the connecting rectangular tube 20 to be inserted into the connecting rib 14 of the rectangular tube is inserted, the connecting rectangular tube 20 is inserted into the ground. Next, the side plate 23 of the inserted square tube 20 is removed, and the U of the next connection square tube 20 to be connected to the connecting rib 24 of the connection square tube 20 from which the side plate is removed. The female ring 25 is fitted so that the connecting square tube 20 is inserted into the ground. The connecting square tube 20 may be used both the connecting square tube 20 of the first embodiment and the second embodiment.

After repeating the inserting operation several times, by inserting the basic rectangular tube 30 or the connecting rectangular tube 20 in the ground by the connecting method between the rectangular tube on the bottom of the wall rectangular tube composite ( 50) is completed.

The base rectangular tube 30 is an embodiment, and the wall described later on any one of the upper plate 21 or the lower plate 22 of the connecting rectangular tube 20 of the first embodiment in which the U-shaped ring 25 is formed. For the support structure 51 may be formed into a rectangular tube so that the space is inserted, the basic square tube 30 is the lower portion of the left, right wall when the tunnel is small, left, It is installed at the bottom of the right side and the central wall.

As another embodiment of the basic rectangular tube 30, it is also possible to form and use a space in which the wall support structure 51 is inserted in a part of the upper plate or the lower plate in the second embodiment or the like regarding the connecting rectangular tube. The upper plate or the lower plate on which the space is formed is formed to have a shape of a connecting rib at the left and right ends of the space, thereby connecting to the basic rectangular tube 30 by the first support 27 or the second support 28. It is preferable to allow the connection portion of the rectangular tube 20 or the inside of the basic rectangular tube 30 to be supported.

f) inserting the wall support structure 51 made of steel into the vertical space inside the wall rectangular tube composite 50 (S6);

By removing the first and

second supports

27 and 28 installed in the wall rectangular tube composite 50, the interior of the wall rectangular tube composite 50 is opened to form a vertical space. When only the connecting square tube of the first embodiment is used as the connecting square tube 20 constituting the wall square tube composite 50, the first support 27 is present inside the wall square tube composite 50. Therefore, when the first support 27 is removed and the connecting rectangular tube 20 of the first and second embodiments is appropriately mixed with the connecting rectangular tube 20 constituting the rectangular wall composite 50 for the wall, the rectangular tube composite for the wall is Since the first and

second supports

27 and 28 exist inside the 50, the first and

second supports

27 and 28 are removed.

The removal of the first support 27 or the first and

second supports

27 and 28 removes the first support 27 or the first and

second supports

27 and 28 step by step while simultaneously supporting the wall support structure ( It is desirable to allow 51 to be inserted step by step. In the method of removing the first and

second supports

27 and 28, when the first and

second supports

27 and 28 do not have fixing by fastening means such as bolts, the wall support structure 51 is It is also possible to simultaneously remove the first and second supports and insert the support structure for the wall in the form of pushing the first and

second supports

27 and 28 while being inserted.

As described above, the removed first and second supports may be recycled and used as it is for other standard rectangular tubes, connecting rectangular tubes, and basic rectangular tubes, thereby reducing construction cost through reducing members.

The wall support structure 51 inserted into the vertical space is formed by reinforcing the reinforcing bar to steel materials such as H-shaped steel as a plate-like structure. Between the steps e) and f), a guide roller 60 for easily inserting the wall support structure 51 is installed on the inner surface of the wall square tube composite 50. The guide roller 60 is installed at regular intervals in consideration of the size, workability, economics, etc. of the support structure for the wall, it is preferred to maintain the interval of about 1m, the size of the guide roller 60 is a rectangular tube It depends on the size and thickness of the supporting structure. The wall supporting structure 51 is inserted into the wall supporting structure 51 by the hydraulic jack on the propulsion side and the towing jack on the opposite side, similarly to the insertion of the slab supporting structure 41.

g) after pouring concrete into the vertical space into which the supporting structure is inserted, curing step (S7)

After the insertion of the support structure for the wall 51 is completed, after the concrete is poured into the vertical space, that is, the inside of the rectangular tube composite 50 for the wall, the wall 200 is constructed by curing. The concrete injection method by the gallery tube 70 may be used for the concrete pouring, in which case the concrete may be injected by the gallery tube 70 installed between the steps b) and d). The construction of the wall 200 is made by pouring concrete directly into the interior of the square tube complex 50 for the wall, similar to the construction of the slab 100, it is not necessary to install a separate formwork, the wall 200 as the rectangular tube is used There is an advantage that the inner surface of the can be formed flat.

The support structure, that is, the support structure 41 for the slab of step c) and the support structure 51 for the wall of step f) may use precast concrete slabs and walls in another embodiment. The precast concrete slabs and walls are manufactured in the factory or near the site in advance to fit the size of the tunnel, and are inserted by the hydraulic jack and the towing jack. In this case, the step of curing after pouring concrete into the horizontal space in which the supporting structure is inserted in step d) is replaced by the step of grouting with grout material between the horizontal space and the inserted precast concrete slab. The step of curing the concrete after pouring concrete into the vertical space into which the supporting structure is inserted is replaced with the step of grouting with grout material between the vertical space and the inserted precast concrete wall. . As the grout material, it is preferred to use non-shrink mortar to prevent deformation of structures including precast concrete slabs and walls.

After the construction of the slab 100 and the wall 200 is completed, the interior of the tunnel is finished after the slab 100 and the wall 200 are thrown out and the bottom concrete is poured.

Since the slab 100 and the wall 200 has structural stability in itself, the slab 100 and the wall 200 do not require the installation of a separate support beam or clubb when they burrow the inside of the slab 100 and the wall 200. If the floor concrete is cast after curing, the three-dimensional shape of the underground tunnel is completed, and then the square tube constituting the interior surface of the tunnel formed of the slab 100 and the wall 200, that is, the ceiling and wall 200 of the underground tunnel. In consideration of the internal landscape and the like, various finishing materials such as stone, tiles, and paint are further attached or the inner surface is applied by spraying, thereby completing the construction of the underground tunnel.

In the method of building the slab 100 and the method of building the wall 200, the slab 100 and the wall 200 can be constructed at the same time or separately, but if at the same time there is a risk of ground subsidence, When the slab 100 is first constructed, it is preferable to construct the slab 100 first because the square tube is easily press-fitted for the wall 200.

The present invention has been described in detail above with reference to specific embodiments, but the above embodiments are merely examples for easy understanding of the present invention, and therefore, substitutions, additions, and modifications within the scope do not depart from the spirit of the present invention. Embodiments will also belong to the protection scope of the present invention as defined by the claims below. In other words, the present invention can be implemented by using a circular tube instead of the rectangular tube in a modified embodiment, and in the other modified embodiment, when constructing the wall, in addition to the connecting rectangular tube and the basic rectangular tube, A rectangular tube having more can be used, and in another modified embodiment, when the precast concrete member is used as the support structure, the slab and the wall are formed in one piece after the square tube press-fit for slab construction and the square tube press-fit for wall construction. It is also possible to proceed with the process of inserting the integrated precast concrete enclosure, but this is only a modified embodiment included in the technical idea of the present invention will be said to belong to the protection scope of the present invention.

The present invention will be said to be an industrially applicable invention as a technique relating to a method of constructing a tunnel composed of a slab and walls supporting the ground.

Claims

In the method of constructing a tunnel consisting of the slab 100 and the wall 200 supporting it in the ground,

A. The construction of the slab 100,

a) inserting the reference square tube 10 into the ground,

b) inserting the connecting square tube 20 into the ground to the left and right of the reference square tube 10 to form a square tube composite 40 for the slab,

c) inserting the slab support structure 41 made of steel into the horizontal space inside the rectangular tube composite 40 for the slab,

d) curing the concrete after pouring concrete into the horizontal space into which the supporting structure is inserted;

B. The construction of the wall 200,

e) Wall squares by inserting a plurality of square tubes including the connection square tube 20 in the lower portion of the slab square tube composite 40 formed of the reference square tube 10 and the connecting square tube 20 in the ground Forming tubular complex 50,

f) inserting the wall support structure 51 made of steel into a vertical space inside the wall rectangular tube composite 50;

g) curing the concrete in the vertical space into which the support structure is inserted, and then curing;

C. When the construction of the slab 100 and the wall 200 is completed, the interior of the tunnel is finished after the slab 100 and the wall 200 are thrown out and the bottom concrete is poured.

The reference square tube 10 is composed of an upper plate 11 and a lower plate 12 and several side plates 13, each of the upper and lower plates is formed with a connecting rib 14 bent vertically, Fastening holes are formed in the connecting ribs 14 at regular intervals, and stepped surfaces 13 'corresponding to the connecting ribs 14 are formed on upper and lower ends of the side plates 13, and the stepped surfaces 13'. The construction method of the underground tunnel, characterized in that the fastening hole corresponding to the fastening hole of the connecting rib (14) is formed.
The method of claim 1, wherein the step of forming the square tube complex for the wall 50 of the step e) the construction of the underground tunnel, characterized in that it further comprises a reference square tube (10).
According to claim 1, further comprising the step of inserting the gallery tube 70 on the outside of the connection square tube 20 corresponding to both ends of the slab 100, the inserting step of the gallery tube 70 is Construction method of an underground tunnel, characterized in that between the step b) and d).
According to claim 1, wherein the guide roller 60 for easily inserting the support structures (41, 51) between the step b) and step c) and between step e) and step f) is a rectangular tube composite ( 40, 50) The construction method of the underground tunnel, characterized in that it further comprises the step of being installed on the inner surface.
According to claim 1, wherein the connecting rectangular tube 20 is composed of the upper plate 21, the lower plate 22, the side plate 23 and the first support (27); One end of the upper and lower plates is formed with a vertically bent connecting rib 24, the other end is formed with a U-shaped ring 25, the inner side of the connecting rib 24 and the U-shaped ring 25 Fastening holes are formed at regular intervals; Stepped surfaces 23 'corresponding to the connecting ribs 24 are formed at upper and lower ends of the side plates 23, and fastening holes corresponding to the fastening holes of the connecting ribs 24 are formed at the stepped surfaces 23'. Formed; The stepped surface 27 'corresponding to the U-shaped ring 25 is formed on the upper and lower ends of the first support 27, and the stepped surface 27' is formed inside the U-shaped ring 25. Construction method for underground tunnels, characterized in that the fastening hole corresponding to the fastening hole is formed.
The method of claim 5, wherein the connecting rectangular tube 20 is further formed with a protrusion rib 26 in the center of the upper plate 21 and the lower plate 22, the second support between the upper and lower protrusion ribs 26 (28) is further installed, the second support 28 is the construction method of the underground tunnel, characterized in that the upper and lower insertion grooves 29 are inserted into the projection ribs 26 are formed.
The rectangular tube (10) according to claim 5 or 6, wherein the rectangular tube composite (40) for slab of step b) is formed and the rectangular tube composite (50) for wall of step (e) is formed. , The coupling between the 20, by removing the side plates (13, 23) of the rectangular tube (10, 20) inserted into the ground to project the connecting ribs (14, 24), the connecting ribs (14, 24) The underground tunnel construction method comprising the method of inserting the adjacent rectangular tube 20 into the ground while inserting the U-shaped ring 25 of the adjacent rectangular tube 20 to be coupled to).
The method according to claim 5 or 6, wherein the step c) includes the step of inserting the support structure 41 for the slab step by step while the first support 27 or the first and second supports 27 and 28 are removed in stages. In the step f), the first support 27 or the first and second supports 27 and 28 are removed step by step, and at the same time the wall supporting structure 51 is inserted into the step by step. Construction method of the tunnel.