KR101348785B1 - Underground space development of methods for the construction of high-speed rail line and close - Google Patents

Abstract

The present invention relates to an underground space development method for construction adjacent to the roadbed under the rails of a high-speed railroad which comprises: a square pipe pressing-in process (10) of pressing square pipes, which have identical standards, into a tunnel region; an internal excavation process (S20) of excavating from the upper side of the tunnel to the partial inside of the tunnel region after the square pipe pressing-in process; a structure pressing-in process (S30) of pressing a corrugated steel plate assembly or a high strength precast structure through the tunnel region formed by the internal excavation process; and a finish process (S40) of finishing a sidewalk and a lower part of the rails. The underground space development method has the effects of minimizing the overburden on the ground while refraining the settlement and disturbance of the ground when a trenchless tunnel crossing under the roadbed of the rails on which high-speed trains pass is constructed; of securing the safety for the trains, which takes on passengers, passing through a tunnel; and of drastically reducing the total length of the tunnel since it is not required for the tunnel to be constructed to a deep area. [Reference numerals] (S10) Process of pressing-in a square pipe (micro-sized, large); (S20) Process of internal excavation; (S30) Process of pressing-in a structure; (S40) Process of finishing

Description

Underground space development of methods for the construction of high-speed rail line and close}

The present invention relates to a method for developing an underground space for near construction under a high-speed rail track to secure a traffic path that pedestrians or vehicles traverse on the track underground where the high-speed rail passes.

In general, as one of the construction methods to secure the traffic route for crossing the railway section, the method of forming the non-opening type tunnel is mainly adopted.

Known as the non-adhesive type tunnel construction method, the front jaw method is a method of injecting a steel pipe and pulling a precast structure within the range of the pressed steel pipe or placing a ramen structure in the field. ) And STS (Steel Tube Slab) method.

The forward towing method (F / J) method is a method of towing a precast structure box manufactured by pressing a steel pipe in the upper and side portions using a cable and a hydraulic jack.

This F / J method is a method in which a steel pipe is pressed into the upper side of the tunnel, grouted outside the steel pipe, stealed through horizontal drilling, and then completed a general procedure to complete the work by manufacturing and towing a precast structure. .

In addition, the STS (Steel Tube Slab) method uses a small-diameter steel pipe with a wing plate attached at the factory to form a loop in the ground, reinforce the transverse connecting part of the steel pipe with reinforcing bars, and then cast mortar to vertically and horizontally integrate the ramen structure. After the excavation using the ground hole and the construction of the target structure by placing concrete on site, this method also presses the small diameter steel pipe horizontally and vertically into the ground and then places the ramen structure within the small diameter steel pipe. I say that.

However, in the above F / J method or steel tube slab (STS) method, when the steel pipe is horizontally pressed into the ground and the tunnel is formed through the construction of precast structure towing or ramen structure laying, the pressed steel pipe is still underground As it is buried in the water, it is impossible to recover, and the toffee distance, which means the distance from the ground to the upper end of the tunnel structure, is considerable, and the difficulty of work by excavation work to secure the proper toffee distance as well as the cost of steel pipe investment. And the burden of work costs are becoming a problem.

On the other hand, in addition to the above-described method, there is a large-diameter steel pipe indentation method (NTR), which, unlike the above-described method, presses large diameter steel pipes that can be separated horizontally and vertically in the tunnel area by using large diameters, and forms formwork inside the steel pipes. And assemble the reinforcing bar and place it on site.

However, the NTR method has a problem in that only a part of the large diameter steel pipe is used, and a toffee that is larger than the diameter of the large diameter steel pipe needs to be maintained.

On the other hand, in addition to the NTR method described above, there is a TES method (Tube Extract Structure Method), which pushes and pushes the steel pipe on three main surfaces forming the tunnel area, and then pushes the precast structure while leaving the sliding steel plates propelled together outside the steel pipe. There is a method of recovering the steel pipe while leaving the sliding steel plate intact.

This TES method has the advantage of minimizing the distance of the toffee, but has a problem that ground disturbance can occur as the steel pipe is recovered when the structure is pushed.

Therefore, the present invention is to solve the above-mentioned other problems when constructing an unattached type tunnel that crosses under the track area through which the high-speed railway passes, while minimizing the toffee with the ground, the ground subsidence or ground disturbance is suppressed, The aim is to minimize the cost of tunnel construction.

According to an aspect of the present invention,

In the underground space development method for near construction under high speed railway,

Square tube indentation step (S10) that the square tube having the same specification as the tunnel area is press-fitted,

After the tube through the indentation process, the internal excavation process (S20) to partially excavate earth excavation from the upper side to the tunnel area,

A structure pressing step (S30) for pressing a corrugated steel sheet assembly or a high strength precast structure through a tunnel region formed through the internal drilling process;

It is characterized by consisting of a finishing process (S40) to deliver and close the bottom.

In addition, the present invention in the underground space development method for close-up construction under the high-speed railway track,

Taste tube is press-propelled and connected to the upper region of the tunnel area, and then press-propulsion of the small steel pipe into the inner side, and diagonal sections are connected in a circular arc shape to the tunnel area in a section leading to both lower ends of the taste tubes. Steel pipe and square tube press-in process (S10) through which the small steel pipe and the small and diagonal tubes are press-fitted,

A precast structure press-fit process (S30) for press-propulsing the precast structure pre-poured to form a wall into an area where the diagonal tube is press-propelled and recovering the diagonal tube;

Deburring step (S50) for digging a string on the upper side of the tunnel area,

Corrugated steel sheet assembly press-fitting process (S70) for pressing and pushing the corrugated steel sheet assembly while pushing down the small steel tube below the region where the taste tube is press-fitted and recovering the small steel tube;

Steel pipe frame connection process (S90) for constituting a plurality of steel pipe frames spaced apart progressively break the upper side of the tunnel area to support the corrugated steel sheet assembly and fixed to the end side of the precast structure,

An earth anchor is provided from the inside of the precast structure forming the wall to the outside, and the finishing process (S110) of guiding and closing the lower end of the tunnel area is performed.

In addition, the present invention in the underground space development method for close-up construction under the high-speed railway track,

The leg tube press-propelled into the tunnel area and the arc tube press-in process (S10) connected in the form of an arc,

A corrugated steel sheet assembly press-fitting process (S70) for pressurizing and pushing the corrugated steel sheet assembly into the press-in pushing propulsion regions of the taste tubes;

An internal excavation process (S20) for digging and digging inside the tunnel area;

A lower plate demolition step (S80) in the corrugated steel sheet assembly for dismantling the lower steel sheet among the upper and lower steel plates which are connected to the upper and lower portions of the corrugated steel sheet assembly;

It is characterized by consisting of a finishing process (S40) to deliver and close the bottom.

In addition, the present invention in the underground space development method for close-up construction under the high-speed railway track,

The leg tube is press-propelled and connected to the upper region of the tunnel area, and in the section leading to both lower ends of the leg pipes, the diagonal pipes are connected in a circular arc shape to the tunnel area so that the small and diagonal pipes are press-fitted respectively. Step (S10),

A structure press-fitting process (S30) for press-fitting the corrugated steel sheet assembly to the press-fitting region of the taste tube and the precast structure forming a wall to the diagonal tube press-in region, and recovering the taste tube and the diagonal tube;

An internal excavation process (S20) for excavating the interior of the tunnel area, removing the lower steel plate of the corrugated steel assembly, connecting the corrugated steel assembly and the precast structure forming the wall, and fixing the precast structure with an earth anchor;

It is characterized by consisting of a finishing process (S40) to deliver and close the bottom.

According to the present invention, when constructing an unattached type tunnel that crosses under the track area through which the high-speed railway passes, it is possible to minimize ground cover and ground disturbance while minimizing the toffee height with the ground, and to minimize the cost of tunnel construction. You can expect.

In addition, according to the present invention, by minimizing the topigo and providing a construction method that suppresses ground subsidence or ground disturbance, it is possible to ensure the safety of vehicles and pedestrians passing through the tunnel, and not to form the tunnel deep. Since it is not necessary, the total length of the tunnel can be greatly reduced.

1 to 4 are process flowcharts of each embodiment according to the present invention.
5 to 13 are views according to the first embodiment of the present invention.
5 is a view of a state in which the taste tubes are press-propelled into the tunnel area
Fig. 6 shows the basic opening angle at the bottom end of both sides of the taste tube after the tube is press-propelled.
Drawing showing state of installation of pipe
FIG. 7 is a view illustrating a state in which the corrugated steel sheet assembly is press-pressed to the lower side of the taste tube propulsion region.
FIG. 8 is a view illustrating a state in which the lower steel sheet of the corrugated steel sheet assembly is disassembled in FIG. 7; FIG.
9 is a perspective view showing a separated corrugated steel sheet assembly
FIG. 10 is an exploded perspective view of a state prior to being pressed in and propagated down the taste tube propulsion region by using the corrugated steel sheet assembly of FIG. 9. FIG.
11 is a perspective view of the completed form
12 is a cross-sectional view of the push-propelled state using a precast structure in place of the corrugated steel sheet assembly in FIG. 10 or FIG.
13 is a perspective view of Fig. 12
14 to 17 are views according to a second embodiment of the present invention.
Fig. 14 is a schematic view of a state in which the taste tube and the diagonal tube are press-fitted into the tunnel area;
FIG. 15 is a view showing a state in which the precast structure is press-propelled into the diagonal pipe propulsion region in the state shown in FIG.
FIG. 16 illustrates a state in which the corrugated steel sheet assembly is tensioned by using a PC strand after pushing and pushing the corrugated steel sheet assembly in FIG. 14.
17 is a view showing a state in which a steel pipe frame is installed to the lower side of the corrugated steel sheet assembly
18 to 20 are views according to a third embodiment of the present invention.
18 is a view of the push-propulsion state using only the taste tube into the tunnel area;
FIG. 19 indents the corrugated steel sheet assembly along the taste tube propulsion region of FIG. 18. FIG.
Drawing with the progress of collecting taste tubes
20 is to release the lower steel plate of the corrugated steel sheet assembly in the state shown in FIG.
One state drawing
21 to 23 are views according to a fourth embodiment of the present invention.
FIG. 21 is a view of a state in which the beauty tube and the diagonal tube are press-fitted into the tunnel area
FIG. 22 is a corrugated steel sheet respectively as the tail tube propulsion region and the diagonal tube propulsion region of FIG. 21.
Drawing of pushing assembly and precast structure
Figure 23 is completed by separating the lower steel plate in the corrugated steel sheet assembly of Figure 22
Drawing showing the state of forming a tunnel
Figure 24 is an example so that when the taste tube is press-propelled, the steel tube is formed by a plurality of equal intervals spaced apart to the lower side of the corrugated steel sheet assembly when it is recovered by the corrugated steel sheet assembly is pushed in pushing the taste tube to prevent settlement Drawing
25 to 27 schematically illustrate a connection structure between a corrugated steel sheet assembly and a precast structure forming a wall, and a connection structure between a steel pipe frame and a precast structure forming a wall, respectively.

The present invention proposes a method to apply the TES method, but to create a modified TES method to significantly cross the passage of the high-speed railway through the basement, while significantly reducing the toffee height and significantly reducing the construction cost and construction period. .

Meanwhile, various implementations may be made by the method of the present invention, which will be described with reference to the accompanying drawings.

1st Example  (Example 1)

In this embodiment, using a square tube, the construction method will be described and is called an arching roof method.

The drawings for explaining the first embodiment are as shown in Figs.

The standard of each tube adopted in each embodiment of the present invention used a standard of 175 mm × 175 mm, and in the present invention will be referred to collectively as the taste tube (10).

An example in which the standard is larger than that of the taste tube 10 used in the present invention will be described below. The angle tube adopted in such a case will be collectively referred to as the diagonal tube 20 and the term will be used in the overall description of the present invention.

The standard of the diagonal tube 20 used in the present invention used a standard of 450mm × 450mm.

However, the present invention is not necessarily limited to the specifications of the respective tubes.

-Pipe indentation process; S10-

First, press the taste tube 10 to form an arc-shaped trajectory along the range forming the tunnel region 1 as shown in FIG. 5, and then press the angle tube indentation process S10 to grout the outer peripheral surface of the taste tube 10. Going through.

Here, the taste tube 10 has the configuration as shown in FIG. 5, wherein each of the taste tubes 10 propelled in the tunnel area by the press-in propulsion of the taste tube 10 is formed in an arc shape along the tunnel region 1. Will be pushed in to make it happen.

Meanwhile, as illustrated in FIG. 5, the taste tube 10 connects the outer sides of the taste tube 10 adjacent to each other and is fixed to guides 11 for serving as guides when being propelled to the tunnel region 1. It was made.

Preferably, the guides 11 are formed of “b” shaped steels, which are alternately interlocked with each other and prevent the path from escaping during the press-in propulsion of the taste tubes 10. In order to facilitate the straightness of the time, and when the play occurs in the curved area formed by the curved portion, that is, the taste tube (10) is connected to the guide (11) connecting the taste tube (10) when there is a play is settled A phenomenon may occur, and celebrations should be supported to prevent such settlements.

To this end, each of the guides 11 constituted by the taste tube 10 and the taste tube 10 inside and outside is configured to be coupled to each other using the "L" shaped steel as described above, but constitutes one guide 11 ". The L "-shaped steel is in contact with the" L "-shaped steel of the other beautiful leg tube 10 in close contact with the insertion gap was configured so that there is no play.

Internal excavation process; S20-

After the corner tube indentation process (S10) is completed as described above, a partial internal excavation earthwork is carried out from the upper side of the tunnel region (1), and the tail tube (10) press-propelled by the corner tube indentation process (S10) and Of the contact portion of the tail tube 10, the tail tube of the completed form by welding and fixing the contact portion of the other tail tube (10) in contact with the spacing holding steel 12 facing toward the tunnel area (1) side in sequence The fixing of 10 is completed.

In order to serve as a press-in guide of the corrugated steel sheet assembly 40 to be described later in this state, the open base foundation tube 30 is installed at the upper and lower sides of the base 31 respectively installed at both lower and lower ends of the tunnel region 1, and the lowermost leg tube ( 10) will be installed in contact with.

Structure indentation process; S30-

This process is a process for injecting the structure into the assembly structure of the taste tube (10) formed in the arcuate arch shape to the tunnel region (1) after the above-described internal excavation process (S20) is completed.

The structure may be made of a corrugated steel sheet assembly 40 or by selecting any one of the precast structures 50.

First, the corrugated steel sheet assembly 40 has a shape that is press-fitted to the lower end sides of the taste tubes 10, and is provided on both lower and lower bases 31 of the tunnel region 1 as described above. 10) in order to be seated in the opening-type base angle tube (30) in contact with the installation and to be press-propelled as a whole in the form of an arch to be pushed by the guide of the above-described opening base angle tube (30).

As such, when the corrugated steel sheet assembly 40 is pressurized and pushed into the tunnel region 1 under the guidance of the opening type basic corner tube 30, the space generated between the taste tube 10 and the corrugated steel sheet assembly 40 is completed. Inject mortar to finish.

On the other hand, when propelling the corrugated steel sheet assembly (40) to push the small diameter steel pipe 90 first to the lower end of the taste tube (10) in order to ensure the propulsion ease, and then push the corrugated steel sheet assembly (40).

Alternatively, instead of using the corrugated steel sheet assembly 40, the same application may be performed using the precast structure 50.

That is, as shown in FIG. 12, the precast structure 50 may be cast in the field by dividing the arc-shaped arch form the tunnel area 1 into two parts, or after being poured in a separate factory, etc. At this time, the concave L-shaped steel 25 is embedded in the lower end of the precast structure 50. In the central portion where the precast structure 50 is in contact with the upper end side of the tunnel area 1 using reinforcing bars, the precast structure 50 is connected by in-situ casting, and then the above-described opening type basic angle tube 30 is formed. The concave L-shaped steel 25 is overlapped with the convex L-shaped steel 26 formed on the inner bottom of the press-propulsion.

Through the above process, the tunnel construction method for lowering the toffee while passing the lower portion of the high-speed railway track area by the Arching Roof method was described.

Second Example  (Figure 2 example)

In this embodiment, the tunnel construction is a combination of the method according to the first embodiment described above, a method in which the diagonal pipes are press-propelled and pushed the diagonal pipes on both lower lower portions of the tunnel area, and the precast structure is press-propelled. Explain how.

The drawings for describing the second embodiment are as shown in FIGS. 14 to 17. First, the construction process according to the second embodiment will be described in chronological order as follows.

In the non-stick type tunnel construction method formed in the area crossing the track area for high-speed railway operation,

Taste tube is press-fitted and connected to the upper region of the tunnel area, followed by press-propulsion of the small steel pipe 90 to the inside thereof, and diagonal sections are arcuated to the tunnel area. The steel pipe and angled pipe indentation process (S10) and the small steel pipe 90 and small, diagonal tube is press-fitted, respectively,

A precast structure press-fitting process (S30) for press-in pushing the precast structure which is poured to form the wall into the area where the diagonal tube is press-propelled, and recovering the diagonal tube;

A tunnel region upper string trench process (S50) for breaking a string on the upper side of the tunnel region;

Forming a form in which the taste tube remains below the region in which the taste tube is press-fitted, pushing the small steel tube 90 while pushing the corrugated steel sheet assembly, pressurizing the corrugated steel sheet assembly (S70),

Comprising a plurality of steel pipe frame for reinforcing and supporting the lower end of the corrugated steel sheet assembly to secure the connection with the end side of the precast structure, the steel pipe frame connection process (S90),

An earth anchor is installed from the inside of the precast structure forming the wall to the outside, and the finishing process (S110) is performed to guide and finish the lower portion of the tunnel area.

In the second embodiment of the present invention, the square tube indentation step (S10), in the tunnel region of the arcuate tube 10, the small steel tube 90 and the diagonal tube 20 in the upper and lower sides of the circular arc region, respectively. The indentation is pushed to each other so that the tunnel can be formed, and finally, the taste tube 10 propels the small steel tube 90 to the lower side of the taste tube 10 while maintaining the remaining state, the corrugated steel sheet assembly 40 At the same time, the lower steel plate 45 is to be supported by the steel pipe frame 60 so that the lower side of the corrugated steel sheet assembly 40 is easily pushed and pushed out, and at the same time, the diagonal pipes 20 are The precast structure 50 constituting the wall is pushed and pushed to recover the embodiment.

Small steel pipe and square tube indentation process; S10-

In the small steel tube and the square tube indentation process (S10), as shown in FIG. 14, the beauty tube 10 having the above-described specifications is formed to be rounded in an arc shape as the upper region of the tunnel region 1.

Here, the connection state of the taste tube 10 and other adjacent taste tubes 10 is as described above.

Since the lower steel tube (10) inside the small steel pipe 90 in contact with the propulsion so that the corrugated steel sheet assembly 940 can be easily pushed in the future.

In addition, the lower end of the taste tube (10) is connected to the innermost contact with the lowermost taste tube (10) inwards and pushes the diagonal tube 20 is connected to form a circular arc as a whole.

Here, the diagonal tube 20 is the same as using the standard of 450mm × 450mm.

The connection structure of the diagonal tube 20 may also be applied in the same manner as the structure of the taste tube 10. The diagonal tube 20 of the curved portion region is connected to facilitate the straightness when the diagonal tube 20 is propelled. In order to support the celebration causing the occurrence of settlement caused by the play between the guides 21 connecting the diagonal tubes 10 when the celebration is transmitted from the site, the contact portion of the diagonal tube 20 and the diagonal tube 20 The inner and outer sides of the guide (21) made of "L" shaped steel, respectively in a pair to take a form that is coupled to each other, the lower side of the guide (21) located outward of the pair of guides 21 to be joined Auxiliary guide 22 to support is configured to be configured to be coupled to each other, the "L" shaped steel of each guide 21 is preferably configured to be in close contact with each other and no play.

As such, after the press-fitting of the taste tube 10 and the diagonal tube 20 is completed, the outer peripheral surfaces of the tube 10 and 20 are grouted.

On the other hand, the diagonal tube 20 positioned at the lowermost side of the diagonal tubes 20 constitutes a flat plate 23 in the upward direction so that the upper side can be opened, and is welded in a straight line directly below the flat plate 23. It is provided with a vertical plate 24 to be fixed, and the vertical plate 24 is fastened so as to be releasable by mutual bolt assembly between the sides of the diagonal tube 20 in contact with the inner circumferential surface.

The reason for doing so is that the vertical plate 24 and the diagonal tube (before pushing-in pushing the precast structure 50 forming a wall to recover the diagonal tube 20 along the propulsion region of the diagonal tube 20) 20) When releasing the bolts assembled between the sides, to facilitate the smooth propulsion of the precast structure 50, can perform the role of the opening base tube 30 in the first embodiment. have.

In addition, for straightness, the convex L-shaped steel 26 should be formed on the lower surface of the lowermost diagonal tube 20 on both sides of the diagonal tubes 20.

Precast structure indentation process; S30-

This step is to press-propelled both the taste tube (10), small steel pipe (90) and the diagonal pipe (30) by the above-described angle pipe indentation step (S10) to form a wall into the area where the diagonal pipe is press-propelled. It means a process of recovering the diagonal tube 30 while pressing and pushing the poured precast structure 50, and then digging the file on the upper side.

The precast structure 50 refers to a pre-poured structure in which a concave L-shaped steel 26 is embedded at a lower end thereof. The precast structure 50 is transferred to the site to press-protrude along the corresponding diagonal tube 20 area.

At this time, as described above, in the state that the free plate of the flat plate 23 on the upper side of the lower diagonal tube 20 to enable the free flow by separating the vertical plate 24 and the bolt in the lower diagonal tube 20, precast When press-fitting the structure 50, the concave L-shaped steel 26 formed on the lower surface of the lower diagonal tube 20 should be overlapped with the concave-shaped L-shaped steel 26 so that the smooth press-in propulsion of the precast structure 50 is possible. Done.

A stripping process on the upper side of the tunnel area; S50-

In this process, the press-push propulsion of the precast structure 50 is completed as described above, and as shown in FIG. 15, a string trench is formed in the upper left, right, and middle portions of the tunnel region 1, which is a corrugated steel sheet assembly 40. This is to serve as an inspection window that can be observed by skilled workers when the) is pressed.

In this state, the soil is still not excavated in the lower part of the tunnel area 1.

Corrugated sheet steel assembly indentation process; S70-

This step is a small element pushed to the lower side of the indentation region of the taste tube (10) which is press-propelled to the upper side of the tunnel region (1) in the state of going through the pre-cast indentation step (S30) and file breaker step (S50) described above. Means a process of pressing the corrugated steel sheet assembly 40 while pushing the steel pipe 90.

In this embodiment, the taste tubes 10 remain in a form buried underground.

The corrugated steel sheet assembly 40 used in this step of the present embodiment has a configuration in which a steel sheet is attached only to a lower surface unlike the corrugated steel sheet assembly 40 according to the first embodiment described above.

Both end sides of the corrugated steel sheet assembly 40 are fixed to the outer surface side of the precast structure 50 by using an anchor bolt or the like using connecting means such as an anchor bolt, as shown in FIG. 17, and the "L" shaped steel ( 42) The other end surface plate 47 of the corrugated steel sheet assembly 40 is supported and fixed to the other side, and the reinforcing plate 43 for preventing bending of the “L” shaped steel 42 is welded and fixed.

In some cases, both ends of the corrugated steel sheet assembly 40 may be tension-fixed to the lower surface side of the corrugated steel sheet assembly 40 using the PC strand wire 70.

At this time, the PC strand (70) is configured when the corrugated steel sheet assembly 40 is configured together with a state that is pressed in advance.

Steel pipe frame connection process; S90-

After the corrugated steel sheet assembly 40 is pressurized and pushed in the shape of an arch to the lower side of the press-fitting region of the taste tubes 10 by the corrugated steel sheet assembly press-fitting process (S70), the corrugated steel sheet assembly 40 is formed in a downward direction. In order to support the, the corrugated steel sheet assembly 40 is released after the steel sheet attached to the lower surface side of the steel pipe frame 60 in the shape of an arc by the same curvature is spaced at appropriate equal intervals.

Both ends of the steel pipe frame 60 is connected to the precast structure 50 forming a wall, as shown in Figure 25, the base plate 51 on the end surface of the precast structure 50, the anchor bolt 52 After fixing using the back and the like can be welded fixed to the contact portion using a stiffener 53 for holding and fixing the base plate 51 and the steel pipe frame 60.

-Finishing process; S110-

When the above-described steel pipe frame connection process (S90) is completed, the mortar is injected into the space generated between the taste tube 10 and the corrugated steel sheet assembly 40, and the bottom portion of the tunnel, which is the remaining portion of the earth and sand, remains. In order to fix and support the precast structure 50 using the earth anchor 80 from the inner side to the outer side of the precast structure 50 which forms the walls and forms the wall, and to prevent lateral displacement and firm support for the axial force. The main heat grouting and paving with a asphalt or the like under the tunnel area (1) where the corrugated steel sheet assembly 40 and the steel pipe frame 60 is finished.

Third Example  (Example 3)

Unlike the above-described first and second embodiments, the present embodiment will be described with reference to FIGS. 18 to 20 as an example of the construction by the extrude method in which the tunnel is constructed using only the corrugated steel sheet structure.

In other words, in the present embodiment, the tube 10 is press-propelled into the entire tunnel region 1, and then the tube tube 10 is press-propelled along the area in which the tube 10 is press-propelled. 10) was implemented to implement the form of replacing the pressurized propulsion region of the leg tube 10 with the corrugated steel sheet 40.

Construction method according to the third embodiment of the present invention for this purpose,

In the non-stick type tunnel construction method formed in the area crossing the track area for high-speed railway operation,

The leg tube press-propelled into the tunnel area and the arc tube press-in process (S10) connected in the form of an arc,

A corrugated steel sheet press-fitting process (S70) for pressurizing and pushing the corrugated steel sheet assembly into the press-in pushing propulsion regions of the taste tubes;

An internal excavation process (S20) for digging and digging inside the tunnel area;

Lower plate demolition step (S80) in the corrugated steel sheet structure to remove the lower plate of the upper and lower steel plates are connected to the upper and lower sides of the corrugated steel sheet structure;

It consists of a finishing process (S40) to deliver and close the bottom.

As described above in the third embodiment of the present invention, in the square tube indentation step (S10), the tail tube 10 is press-propelled and connected in an arc shape over the tunnel region 1 to the tail tube 10 region. To press-protrude the corrugated steel sheet structure 40 so that the tunnel can be formed.

Tube indentation process; S10-

The angle tube adopted in the present process is a process of press-propulsion to form an arc shape by press-propulsion to the tunnel area (1) consisting of only the taste tube (10), the taste tube (10) and other adjacent taste tubes (10) The connection state is as described above. The grouting process is performed to the outside of the connected taste tubes 10.

Corrugated steel sheet press-fitting process; S70-

This process press-propulses and pushes the corrugated steel sheet assembly 40 into the propulsion region of the taste tube 10 press-propelled by the square tube indentation process (S10) by using the structure of the corrugated steel sheet assembly (40). ) Is a process to recover all.

Internal excavation process; S20-

As such, after all of the taste tubes 10 are recovered by the press-fitting of the corrugated steel sheet 40, internal burrows are performed in the tunnel region 1, and then a row grouting operation is performed to prevent displacement in the transverse direction. .

-Lower plate demolition process (S80) and finishing process (S40) in corrugated steel sheet structure-

When the lower side of the corrugated steel sheet assembly 40 is exposed to the tunnel region 1 to the outside by the internal excavation process (S20), the upper and lower surfaces of the corrugated steel sheet 41 constituting the corrugated steel sheet assembly 40 are each bolted or the like. Of the upper steel plate 44 and the lower steel plate 45 to be assembled and connected, the lower steel plate 45 is released and demolished, and then shotcrete the sealing part to prevent corrosion, and the base portion 31 below the tunnel region 1. ) And the finish with the delivery.

Fourth Example

This embodiment will be described with reference to FIGS. 21 to 23 attached as a construction example by the extrude method.

That is, in the present embodiment, the pressurized propulsion using the taste tube 10 and the diagonal tube 20 to the tunnel region 1, and then press-propelled the corrugated steel sheet assembly 40 to the taste tube 10 region to the taste tube Recovering all of the (10) and implements a method of recovering all of the diagonal tube 20 by pushing the precast structure 50 to the diagonal tube 20 propulsion area.

The construction method according to the fourth embodiment of the present invention for this purpose in the underground space development method for near construction under the high-speed railway track,

The leg tube is press-propelled and connected to the upper region of the tunnel area, and in the section leading to both lower ends of the leg pipes, the diagonal pipes are connected in a circular arc shape to the tunnel area so that the small and diagonal pipes are press-fitted respectively. Step (S10),

A structure press-fitting process (S30) for press-fitting the corrugated steel sheet assembly to the press-fitting region of the taste tube and the precast structure forming a wall to the diagonal tube press-in region, and recovering the taste tube and the diagonal tube;

An internal excavation process (S20) for excavating the interior of the tunnel area, removing the lower steel plate of the corrugated steel assembly, connecting the corrugated steel assembly and the precast structure forming the wall, and fixing the precast structure with an earth anchor;

It is characterized by consisting of a finishing process (S40) to deliver and close the bottom.

Square tube indentation process; S10-

Square tube indentation step (S10) in the present embodiment is a step of press-propulsion to the tunnel region 1 by using the taste tube (10) and the diagonal tube (20).

First, the taste tubes 10 are press-propelled so as to form an arc shape as a whole toward the upper side of the tunnel region 1 using the taste tubes 10.

As such, after the press-in propulsion of the taste tubes 10 is completed, the diagonal tubes 20 are pressed into the inside of the taste tubes 10 at the lowermost portions of both sides in the press-in propulsion region of the taste tubes 10.

Structure indentation process; S30-

In the structure indentation process (S30) according to the present embodiment, the pressurized propulsion is carried out to the tunnel region 1 using both the taste tube 10 and the diagonal tube 20, and then the region of the taste tube 10 and the diagonal tube 20 The pre-tightening structure of the corrugated steel sheet assembly 40 and the precast structure 50 constituting the wall is pressurized to recover the taste tube 10 and the diagonal tube 20.

In the state in which the taste tube 10 and the diagonal tube 20 are press-fitted and propelled by the angle tube press-in process (S10), the taste tube 10 is press-propelled and pushed and pushed into the corrugated steel sheet assembly 40 to taste. Allow tubes 10 to be recovered.

In order to prevent the settlement due to the difference between the taste tube 10 standard and the corrugated steel sheet 40 standard when pushing and pushing all the taste tubes 10 by using the corrugated steel sheet 40 as shown in FIG. 24. Corrugated steel sheet assembly 40 may be formed of a plurality of steel 46 is formed at equal intervals to the bottom of the lower steel plate 45 corresponding to the bottom of the upper surface of the center.

In this case, if the arcuate width source formed by the taste tube 10 is significantly larger than the height, the displacement may be applied to the structure.

In addition, it pushes and propels the precast structure 50 that forms a wall while pushing a plurality of diagonal tubes 20 arranged to form an arc shape while connecting with the lowermost sides of the taste tubes 10.

On the other hand, the diagonal tube 20 positioned at the lowermost side of the diagonal tubes 20 constitutes a flat plate 23 in the upward direction so that the upper side can be opened, and is welded in a straight line directly below the flat plate 23. The vertical plate 24 is fixed, and the vertical plates 24 are fastened so as to be releasable by mutual bolt assembly between the sides of the diagonal tube 20 which are in contact with the inner circumferential surface as described above.

After the recovery of the taste tubes 10 and the press-fitting propulsion of the corrugated steel sheet assembly 40 are completed, the upper portion of the tunnel region 1 is excavated by a part of the trench to expose the structure of the corrugated steel sheet 40 to the outside. Separate and dismantle the lower steel plate 45 to form.

In this process, a plurality of steel pipe frames 60 may be equidistantly spaced along the valley side exposed to the lower side of the corrugated steel sheet 41 of the corrugated steel sheet assembly 40 as needed.

To this end, the excavation excavation of the upper side soil remaining area of the tunnel area (1) is gradually excavated and constructed.

On the other hand, the precast structure 50 forming the wall and the both ends of the corrugated steel sheet assembly 40 are interconnected as shown in the detail of FIG. Facilities to maintain robustness.

In addition, main grouting is to be carried out to prevent lateral displacement.

As such, when the tunnel is completed by the structure indentation process (S30) and the internal excavation process (S20), it may be finished by the finishing process (S40) for the delivery and the bottom finish by a known technique.

S10; Square tube indentation process S20; Internal excavation process
S30; Structure indentation step S40; Finishing process
S50; Tunnel area upper side digging process S70; Corrugated Steel Sheet Assembly
S90; Steel pipe frame connection process S110; Finishing process
One; Tunnel area 2; Jiboong
10; Taste tube 11; guide
12; Spacing steel 20; Diagonal tube
21; Guide 22; Auxiliary Guide
23; Flat plate 24; Vertical Plate
25; Convex L-shaped steel 26; Concave L-Shaped Steel
30; Open base tube 32; Inspection window
40; Corrugated steel sheet assembly 41; Corrugated steel
42; 'L' shaped steel 43; Reinforcing plate
44; Upper steel plate 45; Lower steel plate
46; Steel 47; End plate
50; Precast Structure
51; Baseplate 52; Anchor bolt
53; Stiffer 60; Steel pipe frame
70; PC strand 80; Earthanka
90; Small steel pipe

Claims (6)

In the non-stick type tunnel construction method formed in the area crossing the track area for high-speed railway operation,
Square tube indentation step (S10) is the indentation of the beautiful tube having the same standard into the tunnel area,
After the tube through the indentation process, the internal excavation process (S20) to partially excavate earth excavation from the upper side to the tunnel area,
The high-strength precast structure or the small-diameter steel tube is first pushed into the lower end side where the taste tube is propelled through the tunnel region formed through the internal excavation process, and then pushing any one of the corrugated sheet assemblies. Structure press-fit process (S30),
Underground space development method for high-speed railway track under construction, characterized in that consisting of the finishing process (S40) to guide and close the bottom.
In the non-stick type tunnel construction method formed in the area crossing the track area for high-speed railway operation,
Taste tube is press-fitted and connected to the upper side of the tunnel area, followed by press-propulsion of the small steel pipe to the inside, and the diagonal pipes form an arc shape as the tunnel area in the section leading to both lower ends of the small steel pipe and the taste tube. Steel pipes and angled pipe indentation process (S10) is connected to each of the small steel pipe and the diagonal pipe is press-fitted,
A precast structure press-fit process (S30) for press-propulsing the precast structure pre-poured to form a wall into an area where the diagonal tube is press-propelled and recovering the diagonal tube;
Deburring step (S50) for digging a string on the upper side of the tunnel area,
Corrugated steel sheet assembly press-fitting process (S70) for pressing and pushing the corrugated steel sheet assembly while pushing down the small steel tube below the region where the taste tube is press-fitted and recovering the small steel tube;
Steel pipe frame connection process (S90) for constituting a plurality of steel pipe frame spaced apart progressively bursting the upper side of the tunnel area to support the corrugated steel sheet assembly and fixed to the end side of the precast structure;
An underground space development method for high-speed railway track near-ground construction, comprising a finishing process (S110) for installing an earth anchor from the inside of the precast structure forming the wall to the outside, and guiding and closing the lower portion of the tunnel area. .
In the non-stick type tunnel construction method formed in the area crossing the track area for high-speed railway operation,
The leg tube press-propelled into the tunnel area and the arc tube press-in process (S10) connected in the form of an arc,
A corrugated steel sheet press-fitting process (S70) for pressurizing and pushing the corrugated steel sheet assembly into the press-in pushing propulsion regions of the taste tubes;
An internal excavation process (S20) for digging and digging inside the tunnel area;
Lower plate demolition step (S80) in the corrugated steel sheet structure to remove the lower plate of the upper and lower steel plates are connected to the upper and lower sides of the corrugated steel sheet structure;
Underground space development method for high-speed railway track under construction, characterized in that consisting of the finishing process (S40) to guide and close the bottom.
In the underground space development method for near construction under high speed railway,
Tectonic tubes are press-propelled and connected to the upper region of the tunnel area, and diagonal sections are connected in a circular arc shape to the tunnel area in a section leading to both lower ends of the tubes, and the corner tubes and the diagonal tubes are respectively pressed in. Indentation process (S10),
A structure press-fitting process (S30) for press-fitting the corrugated steel sheet assembly to the press-fitting region of the taste tube and the precast structure forming a wall to the diagonal tube press-in region, and recovering the taste tube and the diagonal tube;
An internal excavation process (S20) for excavating the interior of the tunnel area, removing the lower steel plate of the corrugated steel assembly, connecting the corrugated steel assembly and the precast structure forming the wall, and fixing the precast structure with an earth anchor;
Underground space development method for high-speed railway track under construction, characterized in that consisting of the finishing process (S40) to guide and close the bottom.
5. The method of claim 4,
Further comprising a steel pipe frame connecting step (S90) to form a plurality of steel pipe frames for reinforcing and supporting the lower end of the corrugated steel sheet assembly and connected to the end portion of the precast structure, underground space for high-speed railway track close-up construction Development method.
The method according to any one of claims 1 to 4,
Tight tube (10) and taste tube (10) and diagonal tube (20) and diagonal tube 20 for connecting and guide the outer side up and down adjacent to each other, which is mutually coupled using the "L" shaped steel In this configuration, the "L" shaped steel forming one guide (11, 21) is in close contact with the "L" shaped steel of the other leg tube 10 and the diagonal tube (20) in contact with the insert so that there is no play. Alternatively, or further comprising an auxiliary guide 22 for supporting the lower side of the guide 21 in the diagonal tube 20, to ensure the straightness during press-fitting of the taste tube 10 and the diagonal tube 10, and settle down A method of developing underground space for close-up construction under the high-speed rail track, including enabling interconnection of the taste tubes 10 so that the celebration for preventing the phenomenon is supported.

Images