KR101662096B1 - The Construction Method of Non-excavation tunnel what press in extruding Steel pipe by Arch type Precast Upperslab - Google Patents

Abstract

The present invention relates to a method of constructing a non-unfired tunnel, and more particularly to a method of constructing a non-unfired tunnel using a large diameter, medium, small diameter steel pipe, etc., In a method for propelling a steel pipe, the steel pipe is guided by a mutual guider,
A first effect that a tunnel can be constructed using only a steel pipe having a constant standard so that the demand of the types of steel pipes required for the construction of the non-installation type tunnel, that is, the large diameter steel pipe and the small diameter steel pipe,
Since the guide steel plates protruding from both sides of the steel pipe are used, not only the second effect that enables coping with changes in the width of the tunnel,
The third effect is that the number of steel pipes consumed is reduced by using the protruding guide steel plates,
The fourth effect of eliminating the problem caused by the construction error of the steel pipe between the large-diameter steel pipes due to the absence of the large-diameter steel pipes,
The fifth effect of eliminating the problem that the displacement of the ground due to the lack of the upper surface soil is caused by not using the upper large-diameter steel pipe,
The sixth effect that the cost can be remarkably reduced through reuse because the press-fitted steel pipe can be extracted,
A seventh effect of greatly reducing the construction cost by applying a method of forming a tunnel structure by putting the tunnel structure to minimize the method using the PC structure and the steel pipe and forming the tunnel structure safely using the non-
It is possible to improve the workability, improve the working condition, reduce the length of the steel pipe, shorten the length of the pipe, and the like, which are caused by repeatedly driving only the short-distance steel pipe by using the upper slab as the reaction wall in the long tunnel section,
The ninth effect that the planar linear curved portion can be constructed along a given linear shape and the economic cost is greatly reduced,
Since the shape can be variously shaped from a straight line to a smooth curve line, it is possible to provide various advantages such as simplicity and easiness of the tunnel construction, And more particularly, to a method of constructing a non-unfired tunnel in which a steel pipe is press-fitted into an arch-type upper slab which is configured to be able to expect the effects of a total of ten places,

Description

      BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of constructing a non-excavated tunnel by pushing a steel pipe into an arched upper slab,

The present invention relates to a method of constructing a non-unfired tunnel, and more particularly to a method of constructing a non-unfired tunnel using a large diameter, medium, small diameter steel pipe, etc., In the method of propelling the steel pipe, the guider is propelled using the guider projected on both sides in the horizontal direction of the steel pipe. When the steel pipe is propelled to the tunnel side, it can be pushed in an arch-like shape, as well as by pushing the steel pipe with an arch-shaped upper slab which is propelled by the guider of the base rail at the lower end of the structure and both ends of the pillar or slab, The present invention relates to a non-installation tunnel method for press fitting.

As a general tunnel excavation method, there is a front jacking method, which is disclosed in Japanese Patent No. 509707 registered by the inventor of the present invention, Patent Application No. 2006-89993, Non-detachable tunnel excavation method, Discloses a tunnel construction method for a non-installation type tunnel, which is disclosed in Korean Patent Registration No. 10-0815568, and a structure applied thereto.

Particularly, Korean Unexamined Patent Publication No. 10-1073523 discloses a non-detachable tunnel excavation method and a tunnel construction structure used therein,

An upper large-diameter steel pipe step in which a plurality of upper large-diameter steel pipes are press-

A middle horizontal-horizontal steel pipe-propelling step that is pushed horizontally between upper and lower-diameter steel pipes to be remotely pressurized by the upper-

A grouting step of grouting reinforcement of the surrounding ground loosened by the mid-horizontal and /

A lower basic large-diameter steel pipe propelling step for propelling a lower-stage large-diameter steel pipe forming a foundation of a tunnel at a lower end side in the same position as the upper-

A medium-diameter vertical steel pipe propelling step for propelling a mid-diameter vertical steel pipe connecting the upper large-diameter steel pipe and the lower-

A bolt fastened to each steel pipe recovered in the process of driving the structure is disassembled, and the steel structure is connected to the steel pipe so that the steel wire is penetrated, A structure propulsion and an accessory article recovery step for recovering each steel pipe and accessories,

An inner soil excavation and a sliding plate retrieval step of excavating the inner soil of the structure propelled by the structure propulsion and the auxiliary article retrieving step,

And a lower slab installing step of installing the lower slab after recovering the remaining residues by internal slurry excavation,

It is possible to completely recycle various steel pipes and components required in the construction of the non-detachable tunnel to increase the degree of recycling of various constituent parts and make it possible to enter the tunnel structure first without installing the lower slab, In contrast to the conventional construction method, the existing construction method is applied to the tunnel excavation which is performed as a method to reduce the collapse of the tunnel and the end resistance caused by entering the tunnel structure including the lower slab, , It is possible to expect the effect of eliminating the problems that may arise from the air delay, increase of the construction cost, and waste of the work force due to the unnecessary installation of the equipment due to the construction method to reinforce the roadbed.

However, in the case of the above-mentioned patent, both small-diameter steel pipe and large-diameter steel pipe and large-diameter steel pipe are utilized, and a large diameter steel pipe of the center and both right side portions and a large diameter steel pipe of the base portion are required. Therefore, a large-diameter steel pipe, a Jung-gu steel pipe and a small-diameter steel pipe are all required, which increases the number and kinds of parts required for tunnel excavation,

In addition, when the large-diameter steel pipe of the center and both sides is a large-diameter steel pipe, the displacement of the road surface is caused at the position where the toe is small, which is very disadvantageous. In the case of pushing a small diameter steel pipe between the large- And the manufacturing cost is increased because the steel pipe manufactured by deforming the outer shape of the small diameter steel pipe is used so that the particle is not leaked out.

Korean Patent No. 10-1073523

The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide an upper slab capable of forming an arch in an unstructured tunnel construction, The purpose of this method is to simplify and simplify the construction of the tunnel and to reduce the cost by making it possible to reduce the required number of steel pipes by attaching the stone plates to both sides of the steel pipe and pushing them against each other .

Also, since the present invention is applied to a method of forming a tunnel structure by a non-detachable method while minimizing a method using a PC structure and a steel pipe as much as possible, While the shape of the shape is linear to curved so that it can be reduced in size.

In order to accomplish the above object, the present invention provides a method of constructing a non-installed tunnel in which a steel pipe is pressed into an arched upper slab,

(S10) of a horizontal secondary steel pipe being guided in a curve in a state where a corrugated steel plate guider is attached to both sides of a steel pipe of the same size in a widthwise direction at a predetermined height of the tunnel,

An oscillating and collecting base installation for towing the upper slab and for retrieving the accessory articles, a curved upper slab making and towing step (S20)

In order to improve the stiffness of the arcuate upper slab, a ground reinforcing installation step (S30) for partially reinforcing the ground at the bottom of both ends with internal excavation,

A soilless nailing installation step (S40) for continuing internal excavation and reinforcing the ground of both side wall portions,

A step (S50) of installing a wall after the soil nailing is installed,

And a finishing step (S60) of packaging various kinds of interior facilities and ascon packages after the wall is installed.

Further, the present invention is a method for constructing a non-slip tunnel by pushing a steel pipe into an arched upper slab,

(S 10), which is a curve formed by attaching a concave guider to both sides of a steel pipe of the same size in a width direction at a predetermined height of the tunnel,

An oscillating and collecting base for the manufacture of the upper slab, a curved upper slab fabrication, an extrusion and traction step (S20)

Repeating the steps S10 to S20 as the previous step,

In order to improve the stiffness of the arcuate upper slab, a ground reinforcing installation step (S30) for partially reinforcing the ground at the bottom of both ends with internal excavation,

A soilless nailing installation step (S40) for reinforcing the ground in both side walls in the subsequent internal excavation,

A step (S50) of installing a wall after the soil nailing is installed,

And a finishing step (S60) of packaging various kinds of interior facilities and ascon packages after the wall is installed.

The present invention has a first effect that a tunnel can be constructed using only a steel pipe having a constant size so that the demand of the types of steel pipes required for the construction of the non-installation type tunnel, that is, the large diameter steel pipe and the small diameter steel pipe,

The second effect of attaching a stone plate to both sides of the steel pipe and the upper and lower sides of the steel pipe to enable coping in accordance with the change in the width and height of the tunnel,

The third effect is that the cost of construction is reduced because the steel pipe propulsion speed is shortened and the air is shortened because the number of steel pipes to be used is reduced,

The fourth effect of eliminating the problem caused by the construction error of the steel pipe between the large-diameter steel pipes due to the absence of the large-diameter steel pipes,

The fifth effect of eliminating the problem that the displacement of the ground due to the lack of the upper surface soil is caused by not using the upper large-diameter steel pipe,

The sixth effect that the cost can be remarkably reduced through reuse because the press-fitted steel pipe can be extracted,

It is possible to minimize the cost of the PC structure and the steel pipe and to form the tunnel structure by the non-adhered method safely while applying the method of forming the tunnel structure by the field installation,

It is possible to improve the workability, improve the working condition, reduce the length of the steel pipe, shorten the length of the pipe, and the like, which are caused by repeatedly driving only the short-distance steel pipe by using the upper slab as the reaction wall in the long tunnel section,

The ninth effect that the planar linear curved portion can be constructed along a given linear shape and the economic cost is greatly reduced,

Since the shape can be implemented in various shapes ranging from a straight line to a curved line, it is possible to provide various advantages such as simplicity and ease of tunnel construction, and work efficiency, , Aesthetics and a total of 10 effects can be expected.

1 to 12 are views showing a first embodiment according to the present invention
1 is a view showing a process flow according to the working process of the present invention
Fig. 2 is a view schematically showing a state in which the horizontal portion of the steel pipe is formed in an arch shape on the upper side of the tunnel and the entire amount is press-fitted.
3 is a schematic cross-sectional view of a state of an upper slab in which an upper slab is pulled while pushing a horizontal steel pipe after ground reinforcement grouting is performed in both horizontal outer steel pipes so as to prevent the upper slab from sinking;
4 is a schematic sectional view showing a state in which a ground reinforcement hole such as a JSP is applied at regular intervals together with internal excavation to vertically support both ends of the upper slab
5 is a schematic cross-sectional view of a state in which a ground reinforcement hole such as a soil nailing is carried out together with internal excavation for vertically supporting both ends of the upper slab
FIG. 6 is a schematic cross-sectional view of a state in which a wall is installed after completion of side wall reinforcement by FIG. 5
7 is a schematic cross-sectional view of a state in which a structure is completed and the bottom floor is cleaned;
Fig. 8 is an enlarged view of a state of connection between horizontal steel pipes and a schematic cross-sectional view of cutting and joining of horizontal steel pipes in Fig. 2
Fig. 9 is a perspective view showing a schematic enlarged view of a state in which an outer sheet waterproofing material is connected and laid in an upper slab and a wall in Fig.
10 is a schematic enlarged view of a state in which a rail steel pipe and a ground reinforcing steel pipe are installed so that the upper slab can be pulled and extruded from the outer horizontal steel pipe
11 is a view showing a state in which the rail steel pipe connected to the outer horizontal steel pipe as shown in Fig. 10 is structured such that the ground reinforcement and the upper slab are pulled and extruded in this order
Fig. 12 is a view schematically showing the order of construction
13 to 15 are views showing a second embodiment according to the present invention
13 is a view showing a process flow according to the working process of the present invention
Fig. 14 is an enlarged view of a schematic cross-sectional view formed by the state of connection and connection between horizontal steel pipes in Fig. 2 and the horizontal steel pipe
15 is an enlarged view of a general section of a rail steel pipe and a concrete foundation for progressive upper slab movement in the outer horizontal steel pipe
16 is an enlarged cross-sectional view of a connecting steel which blocks the inflow of external soil particles in a space separated from the horizontal steel pipe and the upper slab by pushing the horizontal steel pipe forward from the upper slab

In the present invention, there is a method of attaching a structure by field casting method while slightly reducing the precast region of the structure while attaching a guider protruding to both sides of the same standard steel pipe, and a method of pushing the steel pipe short in the longitudinal direction in the ground, The method of forming a tunnel structure as a whole and the method of transforming the structure from a uniform linear shape to a curved shape etc. are proposed to provide a method that is easy to construct, safer, reduces construction cost, and shortens the air .

The present invention can be variously implemented in various ways, and each preferred embodiment thereof will be described with reference to the accompanying drawings.

1st Example

As shown in FIG. 1,

(S30), an internal excavation and soil nailing installation step (S40), an internal excavation and soil reinforcement installation step (S30), an internal excavation and soil nailing installation step (S40) , A wall installation step (S50), and a finishing step (S60) of packaging various kinds of internal facilities and ascon.

The process flow of the present invention and the respective constitutions thereof will be described.

Horizontal portion  Steel pipe promotion stage ( S10 )

This step is a step for pushing in and pushing the horizontal extension pipes 101 and 101 'over the whole length from the area for forming the tunnel 1 to the upper side. The horizontal extension pipe is formed by the inner horizontal extension pipe 101 and the outer As shown in FIG. 2, the inner horizontal steel pipes 101 are arranged in an arch curved line at a predetermined height of the tunnel to be drilled, and the tunnel 1 In the longitudinal direction of the outer horizontal pipe 101 ', and then pushing the outer horizontal pipe 101'.

The inner horizontal steel pipe 101 applied to the present invention is provided with a corrugated steel plate guider 102 on both sides of the inner horizontal steel pipe 101 for joining with the adjacent inner horizontal steel pipe 101 adjacent thereto, (101, 101 ') is provided with a corrugated steel plate guider (102) on one side, and these horizontal steel pipes (101, 101') are driven along the corrugated steel plate guider (102).

As shown in FIG. 8, the construction of the inner horizontal pipe 101 will first be described.

The upper side of the cutting section is referred to as an upper side steel pipe piece 101a and the lower side portion is referred to as a lower side steel pipe piece 101b) 102a and 102b connected to the L-shaped steel plates 102a and 102b and connected to the L-shaped steel plates 102a and 102b in the upper and lower directions on both sides in the horizontal direction of the outer peripheral surface of the lower steel pipe piece 101b of the steel pipe 101, The plate is connected and fixed. And then connected to the L-shaped section 102a of the upper steel pipe piece 101a and the lower steel pipe piece 101b by bolts. This is a measure for the upper slab to push the lower steel pipe piece 101b in the future.

This is because the upper slab is formed so as to have a shape bent upward by the L-shaped steel pipe 102a in the inner horizontal steel pipe 101, and the upper steel pipe piece 101a, which is left in the ground when the lower steel pipe is pushed, The upper steel pipe piece 101a can be supported without being sagged by supporting it in a right angle shape so as to maintain the load-bearing capacity by the upper load, which is a way to prevent the bedrock settlement.

It is preferable that the corrugated steel plate guider 102 installed on both the left and right sides of the inner horizontal steel pipe 101 is disposed at the entire length of the inner horizontal steel pipe 101 for enhancing the propulsion straightness of the adjacent inner horizontal steel pipe 101 Do.

As shown in detail in FIG. 8, the corrugated steel plate guider 102 described above is disposed so that the adjacent corrugated steel pipes 101 and 101 'and the corrugated corrugations of the corrugated steel plate are in contact with each other so that the horizontal steel pipes 101 and 101' So that it can be smoothly pushed forward.

In addition, since the horizontal extension pipes 101 and 101 'are pushed in a curved line, when the girder-type propulsion is performed, the gap between the steel pipes is narrowed at the slope, It is also possible to attach the corrugated steel plate guider 102 to prevent the corrugated steel plate guider 102 from being disposed on both sides of the inner horizontal steel pipe 101. [

Therefore, the corrugated steel plate guider 102 plays a role of supporting the adjacent inner steel pipe 101 and the adjacent steel pipe accurately.

The upper steel pipe piece 101a of the horizontal steel pipes 101 and 101 'and the L-shaped steel pipe 102a of the lower steel pipe piece 101b are disconnected before the upper slab is pushed, And only the lower steel pipe piece 101b should be propelled.

This is because, when the horizontal steel pipes 101 and 101 'can not be installed at desired height positions, when the upper slab is propelled, the ground displacement may occur and cause settlement. In this case, the horizontal steel pipes 101 and 101 ', The upper surface of the corrugated steel plate guider 102 can not be avoided by the curvature, and the friction surface of the upper slab is minimized to facilitate smooth propulsion.

Meanwhile, as shown in FIG. 10, it is preferable that the outer horizontal welded pipe 101 'has a different structure from that of the inner horizontal welded pipe 101.

The rail steel pipe 103 is disengaged in the longitudinal direction of the outer peripheral surface of the outer horizontal pipe 101 ', and the flat steel pipe is welded to the one side of the outer steel pipe 101' Is welded to the rail steel pipe 103 and the outer horizontal steel pipe 101 '.

When the rail steel pipe 103 is installed, the rail steel pipe 103 'of the semicircle is firstly fixed and supported by the reinforcing bar 104 so that it can withstand the external pressure. Then, the outer horizontal steel pipe 101' And a hole 105 'is provided at a position for the reinforcing steel pipe 106 so that the reinforced steel pipe 105 is installed to facilitate the ground reinforcement 106. Thereafter, So that the upper slab is prevented from being sagged and securely supported. Then, the lids of the remaining semicircles are installed to form a complete circular rail steel pipe 103. This is a rail steel pipe 103, Is pulled and extruded on the rail steel pipe (103).

Meanwhile, the corrugated steel plate guider 102 provided on one side of the outer horizontal steel pipe 101 'is the same as the inner horizontal steel pipe 101 described above. In the process of driving the steel pipes, Socket (S) is used as a connecting material.

Oscillator and collection base installation, upper slab fabrication and traction ( S20 )

This step includes the steps of securing a space for drying the upper slab 2 to be towed in the region for forming the tunnel 1, a reaction force base 110 for towing, and a recovery base 120, It is preferable to form the oscillator paper 130 by selecting the most suitable space in front of and behind the tunnel to be excavated. The oscillator paper 130 has a length of the upper slab 2 to be towed And should be installed with a little extra space according to the width.

In addition, the oscillator paper 130 is arranged so as to be well-balanced by compaction, blockage, concrete or the like so as not to cause uneven settlement, and the rail steel pipe 103 attached to the inner horizontal steel pipe 101 is connected to the upper slab 2 by the PC strand. It is necessary to pay special attention and be installed in accordance with the plan.

The collection base 120 is a base from which the horizontal steel pipes 101 and 101 'on the upper side are collected, and should not be obstructed by other obstacles or gravels.

Since the reaction force band 110 is a place where a hydraulic jack for directly pulling the upper slab 2 is installed, the reaction force band 110 must be supported by a large reaction force. Therefore, the reaction band 110 and the reaction force band 110, It is located on the opposite side of the oscillator (130) and should be supported by a large manual earth pressure and a prop.

When all of the bases are formed, the upper slab 2 is dried in the oscillator paper 130. The drying method is a general method. However, since the PC stranded wire must be disposed in the upper slab, the PVC pipe is buried inside the concrete slab shall.

However, the means for moving the upper slab 2 is not limited to the method by pulling, but a method of pushing and pushing from the back is also included.

Here, it is preferable that the upper slab 2 be carefully provided with a foundation so as not to cause saliva, displacement and displacement.

Further, the shape of the upper slab 2 to be dried should be similar to the shape in which the steel pipe is press-fitted, because a part of the horizontal steel pipes 101 and 101 'pressed into the tunnel 1 must be recovered.

As shown in FIG. 9, the dried upper slab 2 is cured so that the outer surface of the upper slab 2 is surrounded by a sliding plate, which is a thin sheet, so that the coefficient of friction is reduced.

Next, a PC strand connecting the reaction force belt 110 and the oscillator paper 130 is connected through a steel pipe and the inside of the upper slab 2 to provide a fixing device to the upper slab 2 and a hydraulic jack to the reaction force belt 110 .

In order to pull up the upper slab 2 by the PC strand, a PC strand is disposed inside the upper slab 2 and the horizontal steel pipes 101 and 101 'and fixed to the reaction force bar 110

When the pressure is applied to the hydraulic jack installed on the reaction force platform 110, the stroke moves backward along the PC strand, and the upper slab 2 moves forward through the rail steel pipe 103.

When the horizontal extruded pipes 101 and 101 'pressurized into the ground by the repetitive method are released to the collection base 120, the steel pipes are untied and the steel pipes are recovered. At this time, And the entire lower-side steel pipe piece 101b is thus recovered.

The upper slab 2 is gradually pulled through the repeating operation to advance into the interior of the tunnel 1. When the upper slab 2 is elongated and formed into a segment and towed, If the extension is short, the upper slab, which is the first forward slab, and the upper slab, which is the next forward slab, can be rigidly pushed and installed at the back of the segment upper slab.

When connecting the upper segment slabs 2 to each other, a connecting steel 140 is installed between the segment upper slabs 2 so that the ground particles do not flow out between the segment upper slabs 2. This connecting steel 140 is fixed to the upper segment upper slab 2 And a watertight structure is formed by covering the concave grooves of the front portion of the next segment upper slab 2 and providing a water expansive index material at the ends of both upper slabs.

Internal excavation and ground reinforcement installation phase ( S30 )

After the traction and extrusion of the upper slab 2 are completed by the previous step S20, internal excavation is performed. As shown in FIG. 4, the JSP is formed by excavating the inside of the upper slab 2 and supporting the upper slab at regular intervals (107) shall be carried out at intervals of 2 ~ 3m.

This is because the structure of the upper slab 2 forms the curved surface of the arch during the internal excavation, so that the upper load weight along the curved surface generates axial force and is concentrated at both ends of the upper slab. This is necessary as a measure to prevent settlement from occurring.

Internal excavation Soil nailing  Installation steps ( S40 )

As shown in FIG. 5, this step is a step of continuously reinforcing the side wall portion. The JSP 107 ground reinforcement works and the soil nailing 108 on the side walls of the side walls and bottom surface reinforce the side walls and install the shotcrete 109 So that the vertical displacement is converged.

Wall installation phase ( S50 )

The wall 3 should be installed in two steps, since the anti-motion wall 150 must be installed first so that the wall is not pushed by the lateral earth pressure.

Thus, the passive earth pressure is applied to the activity-preventing wall 150 to stabilize the wall 3.

Next, when excavating a joint portion connected to the wall 3 from the installed upper slab 2, the slab should be excavated at a distance of the ridge distance B, so that the falling of the upper slab 2 can be prevented 9, the reinforcing bars are connected by a coupler or the like, and the sheet waterproofing material coming from the upper slab is connected to the shotcrete 109, and concrete is put together with reinforcing steel reinforcement to form a wall.

Here, it is preferable that the wall 3 keeps the curved surface like the upper slab. This is because the external force is advantageous to the curved shape rather than the vertical shape, and the curved line of the curved surface of the upper slab to the wall side is also advantageous to the appearance.

On the other hand, when the width is large, it is preferable to provide the center wall or the pillar 160.

For this purpose, as shown in FIG.

That is, at the S30 step, the central trench excavation is first performed. First, the trench is drilled in the direction of the one side, and then the vertical piercing is performed to install the "H" pile. At the middle of the pile, H beam and piece brackets are installed in the connecting direction of the upper slab and the intermediate pile to support the upper slab. In the same way, the other side is equally equipped.

After completion of the inner part excavation and the protection of the central part, the inner lower part of the groundwork is excavated and then the intermediate wall or the pillar 160 is installed by a general method.

Finishing step ( S60 )

When the wall installation step (S50) is completed, all the works are completed when the process of finishing the construction such as electric piping, sidewalk block, grating, ascon packaging, line marking is completed.

On the other hand, when the wall and the column 160 are installed in the previous stage S50, the lower slab 4 should be installed in this step, and the installation method is generally performed.

Second Example

As shown in FIG. 13,

(S30), internal excavation and soil reinforcement installation step (S30), internal excavation and soil preparation (S10) A nailing installation step S40, a wall installation step S50, and a finishing step S60 for packaging various kinds of internal facilities and ascon packaging.

Unlike the first embodiment in which the steel pipe is propelled to the full length, the present invention promotes the standard of the relatively simple steel pipe of 6 m or 10 m in advance, and the upper slab is dried in segments and gradually advanced, It is a public law.

The process flow of the present invention and the respective constitutions thereof will be described.

Step of pushing horizontal steel pipe (S10)

This step is a step for gradually pushing and pushing the vertical steel pipes 201 and 201 'different in shape from the first embodiment from the area for forming the tunnel 1 as in the first embodiment, As shown in FIG. 2, the horizontal secondary pipe is divided into an inner horizontal secondary pipe 201 and an external horizontal secondary pipe 201 ' 201 in the longitudinal direction of the tunnel 1 while being arranged in an arc curve and then propelling the outer horizontal steel pipe 201 '

The horizontal steel pipes 201 and 201 'arranged as described above are constructed as a single pipe, and the entire length of the tunnel 1 is progressively excavated by a method in which the upper slab is propelled under the reaction force and the upper slab is post-

The inner horizontal steel pipe 201 used in the present invention is provided with the concave guider 202 on both sides of the steel pipe unlike the first embodiment for coupling with the adjacent inner horizontal steel pipe 201 adjacent thereto, (201, 201 ') is provided with a concave guider (202) on one side thereof, which is driven along a coupling facility of the concave guider (202).

As shown in FIG. 14, first, the construction of the inner horizontal steel pipe 201 will be described.

Both ends of the "a" -shaped plates 203, 203 ', which are comparatively short on both sides in the horizontal direction of the outer peripheral surface of the inner horizontal piping 201, are welded and fixed to the inner horizontal piping 201,

On the other hand, the concave guider 202 installed on both the left and right sides of the "a" shaped plates 203 and 203 'is disposed in the entire length of the inner horizontal steel pipe 201 for enhancing the propulsion straightness of the adjacent inner horizontal steel pipe 201 desirable.

As shown in detail in FIG. 14, the concave guider 202 described above is welded to both ends of relatively short "shaped" plates 203, 203 'on both sides in the horizontal direction of the outer peripheral surface of the inner horizontal steel pipe 201, The inner horizontal pipe 201 is fixed to the concave guider 202 by arranging the inner horizontal pipe 201 and the inner horizontal pipe 201 in such a manner that they are opposed to each other at upper and lower portions. Quot; L "shaped steel 204 attached to the concave guider 202 joined to the inner horizontal steel pipe 201 adjacent to the rail-shaped" L " shaped steel 204 attached to the concave guider 202 of the rail- They are fitted together and propelled in the direction of the tunnel.

In order to solve this problem, a flat plate is disposed at the concave intermediate position to form the horizontal steel pipes 201 and 201 'and the steel pipes 201 and 201' .

In addition, since the inner horizontal steel pipe 201 is pushed in a curved line, when the gap is promoted between the steel pipes, the gap between the steel pipes is narrowed at the slope when excavating the steel pipes, It may be the reason why the concave guider 202 is disposed on both sides of the inner horizontal steel pipe 201 in order to prevent it.

As shown in detail in FIG. 14, the concave guider 202 has a polygonal shape and is formed of a circular arc steel plate. By using the rail-shaped "L" shaped steel 204 at the upper and lower ends of the arc steel plate, 201) can be accurately promoted.

Accordingly, the concave guider 202 serves to support the adjacent inner horizontal steel pipe 201 and the adjacent steel pipe accurately.

Meanwhile, as shown in FIG. 15, it is preferable that the outer horizontal steel pipe 201 'has a different structure from that of the inner horizontal steel pipe 201.

Shaped plate 203 or 203 'is welded to and fixed to the outer horizontal steel pipe 201' to the horizontal direction side of the outer peripheral surface of the outer horizontal pipe 201 ' And the "L" shaped steel is welded and fixed to the outer horizontal steel pipe 201 'on the side of the outer peripheral surface of the secondary steel pipe 201' in the horizontal direction.

In addition, a rail steel pipe 205 as a guider with which the upper slab is pulled should be disposed in the outer horizontal steel pipe 201 'together with the stud 205'.

The rail steel pipe 205 should be installed on one side of the outer horizontal steel pipe 201 '. In the installation method, the outer steel pipe 201' is first cut in a longitudinal direction of a predetermined width, And the outer horizontal welded pipe 201 'having the "L" shaped welded portion 211 welded to both ends of the steel pipe.

After the outer horizontal steel pipe 201 'is propelled, the inside of the cut surface is excavated as a formulation, and an injection steel pipe 213 is disposed at the center so as to reinforce the high settlement ground such as CGS. And the ground reinforcement is made in horizontal and vertical directions. Thereafter, an RC foundation 212 is installed to lay a rail steel pipe 205 with a stud 205 'attached thereto. Before the RC foundation 212 is cured, a rail steel pipe 205 is installed and the upper slab And traction and extrusion are repeated on the rail steel pipe 205.

Meanwhile, the concave guider 202 provided on one side of the outer horizontal pipe 201 'is the same as the contents of the concave guider 202 on the inside horizontal pipe 201, It is natural to use the socket (S) as the connecting material to connect the steel pipe in the process of propulsion.

When the assembling of the assembled horizontal re-pipe 201, 201 'is completed, the horizontal re-pipe 201, 201' arranged as shown in FIG. 2 will form the upper horizontal portion of the tunnel structure.

Erosion and recovery station installation, upper slab fabrication and extrusion and traction ( S20 ), S10 ~ S20 Repeat step

This step is performed to secure a space for drying the upper slab 2 to be towed in the region for forming the tunnel 1, to collect the reaction force band 215 and the horizontal arc steel pipes 201 and 201 'for extruding the horizontal arc steel pipe It is preferable to construct the oscillator paper 230 by selecting the most suitable space from the front and rear sides of the tunnel to be excavated and the oscillator paper 230 Should be installed with some clearance according to the length and width of the upper slab 2 to be towed.

In addition, the oscillator paper 230 is arranged so as to be well-balanced by compaction, blockage, concrete or the like so as not to cause uneven settlement, and the rail steel pipe 205 attached to the inner horizontal steel pipe 201 is extruded and the upper slab 2), it should be installed with a special attention to the plan.

The collection base 220 is a base from which the horizontal steel pipes 201 and 201 'on the upper side are collected, and should not be obstructed by other obstacles or gravels.

The reaction force base 215 is a place where a hydraulic jack for directly pulling the upper slab 2 is installed and must be supported by a large reaction force. Therefore, the reaction force base 215 must be made of a rigid steel or the like. It is located on the opposite side of the oscillator paper 230 and should be supported by a large manual earth pressure and a prop.

When all the bases are formed, the upper slab 2 is dried in the oscillator paper 230. The drying method is a general method, and the method of repeatedly moving the upper slab 2 is applied to the extrusion method. The method is then applied.

That is, when the extension of the upper slab 2 is long, the upper slab 2 is divided into a plurality of upper slabs 2, and the slabs 2 are divided into a plurality of slabs 2, The upper slab of the segment is moved forward one by one. ② The upper slab of the segment becomes the reaction force band 215. ② The hydraulic jack is attached to the upper slab of the segment and the stroke is pushed forward. In this way, the upper slab is extruded and then forward. In this way, the upper slab of the segment is extruded.

Next, if the upper slab of the segment ① ② is extruded forward, ① ② ③ the upper slab of the segment becomes the reaction force bar 215, and ④ the upper slab of the segment is pulled.

For this purpose, the hydraulic jack is installed in front of the upper slab of the segment ①, and the fixing device is installed in the rear of the upper slab of the segment to pull the upper slab of the segment ④ with the resistance of the upper slab of the ①②③ segment.

In this way, ⑤ pulling up to the upper slab of the segment is repeated by going back to the first method.

The application of this method to the present invention is applied to the case where the unextended tunnel extension is not penetrated by the steel pipe, and if the extension is long, the segment upper slab 2 may not be pulled due to the self stretching of the PC strand .

On the other hand, a connecting steel 240 is installed between the segment upper slabs 2 so as to prevent leakage of the ground grains. The connecting steel 240 is fixed to the upper segment upper slab 2 and the lower segment upper slab 2 And a waterproof structure is formed by installing a water expansive index material at the ends of the upper slabs on both sides.

Also, between the segments, a dowel bar is required at the middle height of the upper slab 2 to suppress the displacement.

Here, it is preferable that the upper slab 2 be carefully provided with a foundation so as not to cause saliva, displacement and displacement.

Also, the shape of the structure to be dried must be similar to the shape in which the steel pipe is press-fitted, because the entire amount of the horizontal steel pipes 201 and 201 'pressed into the tunnel 1 must be recovered.

As shown in FIG. 9, the dried upper slab 2 is cured and coated with a sheet-like waterproofing material, followed by a steel plate, which is thin and thin, so that the coefficient of friction is reduced during pulling.

In order to perform the above-described displacement of the upper slab, a PC strand connecting the reaction force belt 215 and the oscillator paper 230 is inserted into the steel pipe and the upper slab so as to connect the upper slab with a fixing device, .

When a pressure is applied to the hydraulic jack installed on the reaction force bar 215 to pull the upper slab 2 by using the PC strand, the stroke moves backward through the PC strand. At this time, (205).

When the short-length steel pipe is pulled out to the recovery base by the repetitive method, it is important to release the PC steel wire and recover the steel pipe. In this case, it is important to prevent the steel pipe from being restored to the recovery base 220. Thus, The whole is recovered as it is.

The upper slab 2 is gradually pulled through the repeating operation to advance into the interior of the tunnel 1. When the upper slab 2 is elongated and formed into a segment and towed, If the extension is short, ① upper slab of the segment and ② upper slab of the segment can be strengthened and the whole can be propelled. The fixing port is installed at the back of the segment upper slab.

On the other hand, in this step, steps S10 to S20 are repeated to gradually install the upper slab 2 together with the cross-sectional excavation over the entire length of the tunnel 1. This is different from the first embodiment.

That is, in the first embodiment, all the horizontal steel pipes 101 and 101 'are press-fitted into the ground, the upper slab 2 is pushed to push the steel pipe, and the upper slab 2 is positioned thereon. In the second embodiment, the relatively short horizontal steel pipes 201 and 201 'are press-fitted into the ground, and the upper slab 2 is formed into a segment, which is used as a reaction force band 215, Is a method of gradually advancing steel pipes 201, 201 'and then gradually pushing the upper slab 2 of the segment forward.

This method is advantageous in that when the extension of the tunnel 1 is long, the work in the narrow space of the horizontal steel pipes 201 and 201 'is not only inefficient but also requires oxygen deficiency, This is because of the increase in material cost and construction errors.

Internal excavation and ground reinforcement installation phase ( S30 )

After the upper slab traction and extrusion are completed by the previous step S20, internal excavation is performed.

As shown in FIG. 4, the ground reinforcement of the JSP 207, which can support the upper slab at a predetermined interval by excavating the inside of the upper slab 2, should be performed at intervals of 2 to 3 meters.

This is because the structure of the upper slab 2 forms the curved surface of the arch during the internal excavation, so that the upper load weight along the curved surface generates axial force and is concentrated at both ends of the upper slab. This is necessary as a measure to prevent settlement from occurring.

Internal excavation Soil nailing  Installation steps ( S40 )

After completion of the installation of the upper slab by repeating the previous step, this step is a step of continuously reinforcing the side wall portion as shown in FIG. 5, and the soil nailing 208 is installed on the side wall portion of the JSP (207) So that the side wall is reinforced and the shotcrete 209 is poured so that the vertical displacement converges.

Wall installation phase ( S50 )

The wall installation should be divided into two steps, since the anti-motion wall 250 must be installed first so that the wall is not pushed by the transverse earth pressure.

Thus, a manual earth pressure acts on the activity-preventing wall 250 to stabilize the wall.

Next, when excavating the joint portion connected to the wall in the installed upper slab 2, it is necessary to excavate the joint portion by a distance of the ridge distance B. This is because it is possible to prevent the upper slab from falling down. Coupler or the like and connects the sheet waterproof material coming from the upper slab to the shotcrete 209, and the concrete is put together with the reinforcing steel reinforcement to form a wall.

Here, it is preferable that the wall keeps the curved surface like the upper slab. This is because the external force is advantageous to the curved shape rather than the vertical shape, and the curved line of the curved surface of the upper slab to the wall side is also advantageous to the appearance.

On the other hand, when the width is large, it is preferable to provide the center wall or the column 260.

For this purpose, as shown in FIG.

That is, at the S30 step, the central trench excavation is first performed. First, the trench is drilled in the direction of the one side, and then the vertical piercing is performed to install the "H" pile. At the middle of the pile, H beam and piece brackets are installed in the connecting direction of the upper slab and the intermediate pile to support the upper slab. In the same way, the other side is equally equipped.

After completion of the inner part excavation and the protection of the central part, the lower part of the lower part of the groundwork is excavated and then the intermediate wall or the pillar 260 is installed by a general method.

Finishing step ( S60 )

When the wall installation step (S50) is completed, all the works are completed when the process of finishing the construction such as electric piping, sidewalk block, grating, ascon packaging, line marking is completed.

Meanwhile, in the case where the wall and the column 260 are installed in the previous stage (S50), the lower slab should be installed in this step, and the installation method is a general method.

- reference numerals in the first embodiment -
S10; Phase of horizontal steel pipe
S20; Erosion and recovery station installation, upper slab fabrication and extrusion and traction phases
S30; Internal excavation and ground reinforcement installation phase
S40; Internal drilling and soil nailing installation steps
S50; Wall installation steps
S60; Finishing step
One; Tunnel 2; The upper slab
3; Wall 4; Lower layer and auxiliary layer
101, 101 '; A horizontal steel pipe 101; Inner horizontal steel pipe
101 '; Outer horizontal steel pipe 102; Wave steel sheet guider
102a, 102b; "L" Rail steel pipe
103 '; Semi-circular rail steel pipe 104; rebar
105; An injection steel pipe 105 '; hall
106; Ground reinforcement 107; JSP
108; Soil nailing 109; Shotcrete
110; Reaction force band 120; Collection base
130; Oscillator paper 140; Connecting river
150; An activity prevention wall 160; Center wall and pillars
- reference numerals in the second embodiment -
S10; Phase of horizontal steel pipe
S20; Erosion and recovery station installation, upper slab fabrication and extrusion and traction phases
Repeat S10 to S20
S30; Internal excavation and ground reinforcement installation phase
S40; Internal drilling and soil nailing installation steps
S50; Wall installation steps
S60; Finishing step
One; Tunnel 2; The upper slab
3; Wall 4; Lower layer and auxiliary layer
201, 201 '; A horizontal steel pipe 201; Inner horizontal steel pipe
201 '; Outer horizontal steel pipe 202; Concave guider
203,203 '; An "a " shaped plate 204; Rail type "ㄴ" section steel
204 '; A flat plate 205; Rail steel pipe
205 '; Stud 206; Ground reinforcement
207; JSP 208; Soil nailing
209; Shotcrete 215; Reaction force
220; Recovery base 230; Oscillator
240; Connecting steel 250; Anti-active wall
260; Center wall and pillars

Claims (10)

A method of constructing a non-detachable tunnel construction,
A horizontal steel pipe propulsion step (S10) in which a steel pipe of the same standard is curved in a width direction at a predetermined height of the tunnel,
An oscillating and collecting base installation for towing the upper slab and for retrieving the accessory articles, a curved upper slab making and towing step (S20)
In order to improve the stiffness of the arcuate upper slab, a ground reinforcing installation step (S30) for partially reinforcing the ground at the bottom of both ends with internal excavation,
A soilless nailing installation step (S40) for continuing internal excavation and reinforcing the ground of both side wall portions,
A step (S50) of installing a wall after the soil nailing is installed,
And a finishing step (S60) of packaging various internal facilities and ascon pavement after the wall is installed. The method of constructing a non-unfired tunnel by pushing a steel pipe into an arched upper slab.
A method of constructing a non-detachable tunnel construction,
A horizontal steel pipe propulsion step (S10) in which a steel pipe of the same standard is curved in a width direction at a predetermined height of the tunnel,
An oscillating and collecting base for the manufacture of the upper slab, a curved upper slab fabrication, an extrusion and traction step (S20)
Repeating the steps S10 to S20 as the previous step,
In order to improve the stiffness of the arcuate upper slab, a ground reinforcing installation step (S30) for partially reinforcing the ground at the bottom of both ends with internal excavation,
A soilless nailing installation step (S40) for reinforcing the ground in both side walls in the subsequent internal excavation,
A step (S50) of installing a wall after the soil nailing is installed,
And a finishing step (S60) of packaging various internal facilities and ascon pavement after the wall is installed. The method of constructing a non-unfired tunnel by pushing a steel pipe into an arched upper slab.
3. The method according to any one of claims 1 to 2,
The upper slab 2, which is gradually pulled and extruded and moved to the inside of the tunnel 1, is elongated and made into a segment. When pulling using the PC stranded wire, a fixture is installed at the tail of each segment structure. (1) When pulling up the segment structure, the fixing device is constrained to only the segment structure (2), and the fixing device of the segment structure (2), which is the next sequential advancing structure, The gap between the segment and the segment structure 2 is greatly enlarged and the connection steel 140 and 240 connecting between the segment structure 2 and the segment structure 2 are provided so that the external soil is not pushed out, And a dowel bar is formed at a middle height of the structure 2 that suppresses the occurrence of displacement of the structure 2, Group connected to the river (140 240) is installed in ① and ② segment after segment end structure sikidoe structure secured to the fore end yaw (凹) Home installed swellable index material structures on both sides the segment ends, and to form a waterproof structure,
When the gap between the segments 1 and 2 is increased, the fixing device of the segment structure 2 is released and the fixing device of the segment structure 2 is restrained to pull the segment structure 2, (2) Since the fixing device is repeatedly restrained and released by pulling the segment structure (2), the steel pipe is press-fitted by pushing the steel pipe into an arcuate upper slab capable of pulling a plurality of segment structures (2).
4. The method according to any one of claims 1 to 3,
In order to install a slab capable of supporting the upper slab to provide a wall or a pillar in the upper slab 2 in which the wall or pillar is not previously installed in the central part,
"H" pile is installed by perforating vertically at regular intervals after a trench excavation in the direction of one side, and a screw jack is placed at the middle of the pile so that it is firmly supported on the upper slab and the connection point of the upper slab and the middle pile H beams and piece brackets are installed in the direction of propagation to support the upper slab. The same method is used for the other side in the same way. After excavating the soil inside the both side "H" piles, A method of constructing a non-slip tunnel by pushing a steel pipe into an arched upper slab to be installed.
The method according to claim 1,
The horizontal reinforcement pipes 101 and 101 'are excavated to be extended from a certain height of the tunnel to an upper side in the width direction of the tunnel 1, The inner horizontal steel pipe 101 'is pushed in the longitudinal direction of the tunnel 1 while being arranged in a curved shape, the ground reinforcement grouting of the CGS is injected in the outer horizontal steel pipe 101' The arched upper slab having a shape similar to that of the upper slab is dried and pulled using a PC stranded wire or a hydraulic jack is used to push the horizontal steel pipes 101 and 101 ' And the upper slab 2 is installed. In addition to the internal excavation, the side wall portion ground is reinforced by the JSP 107 and the soil nailing 108 to stabilize the upper slab and form the wall portion A method of constructing an anti-slip wall (150) for stabilizing a wall by using a tappet, and a method of constructing a non-slip tunnel by pushing a steel pipe into an arched upper slab where a central pillar is installed when a width is large.
6. The method of claim 5,
When the upper side of the section of the steel pipe is referred to as the upper side steel pipe piece 101a and the lower side thereof is referred to as the lower side steel pipe piece 101b, "L" shaped steel pipes 102a and 102b are welded and connected to both the upper and lower sides of the outer peripheral surface of the steel pipe piece B in the horizontal direction, and a flat plate connected to the corrugated steel plate guider 102 connected to the L shaped steel pipes 102a and 102b is connected and fixed And then connected to the L-shaped steel pipe 102a of the upper steel pipe piece 101a and the lower steel pipe piece 101b by a bolt,
The corrugated steel plate guider 102 provided on both the right and left sides of the inner horizontal steel pipe 101 is disposed at the entire length of the inner horizontal steel pipe 101 for the propulsion straightness of the adjacent inner horizontal steel pipe 101, The upper and lower steel pipes 101 and 101 'and the corrugated steel plate are disposed so as to be in contact with each other, so that the horizontal steel pipes 101 and 101' can be smoothly moved forward while preventing displacement of the steel pipes 101 and 101 ' The method of constructing a non -
6. The method of claim 5,
The outer side horizontal steel pipe 101 'is cut in the longitudinal direction on one side in the horizontal direction side so as to bind the rail steel pipe 103. The flat steel pipe is welded to the outer side horizontal steel pipe 101' And the other side welds the rail steel pipe 103 and the outer horizontal steel pipe 101 '
When the rail steel pipe 103 is installed, the rail steel pipe 103 'of the semicircle is firstly fixed and supported by the reinforcing bar 104 so that it can withstand the external pressure. Then, the outer horizontal steel pipe 101' And a hole 105 'is provided at a position for the reinforcing steel pipe 106 so that the reinforced steel pipe 105 is installed to facilitate the ground reinforcement 106. Thereafter, So that the upper slab is prevented from being sagged and securely supported. Then, the remaining semicircular lids are installed to form a complete circular rail steel pipe 103, and the upper slab is attached to the rail steel pipe 103, In which a steel pipe is pushed into an arched upper slab to be towed and extruded.
3. The method of claim 2,
In order to progressively push and push the horizontal steel pipes 201 and 201 'from the area for forming the tunnel 1 to the upper side,
The horizontal steel pipe is divided into an inner horizontal steel pipe 201 and an outer horizontal steel pipe 201 'and is excavated and arranged in an arch curved line at a certain height of the vaginal tunnel 1 in the upper side width direction, , And then propelling the outer horizontal steel pipe 201 '
The horizontal steel pipes 201 and 201 'arranged as described above are constructed as a single pipe, and the entire length of the tunnel 1 is progressively excavated by a method in which the upper slab is propelled under the reaction force and the upper slab is post-
The method of the present invention is a method of extruding a CGS ground reinforcement grouting in an outer horizontal steel pipe 201 'and drawing an arcuate upper slab having a shape similar to that of a steel pipe, using a PC steel strand or a hydraulic jack, (201, 201 ') while pushing the horizontal steel pipe (201, 201') by repeatedly moving forward by riding on the upper slab (205) JSP is first reinforced to secure the bearing capacity of the upper slab, and it progresses gradually. After finishing the final upper slab, the side wall is reinforced with the soil nailing (208) by stabilizing the wall part by adding the remaining depth to the wall, It is necessary to install an activity prevention wall (250) where manual soil pressure is applied, and a construction method of installing a wall. Non-excavation tunnel construction method, which press-in pushing the steel pipe to the arcuate upper slab.
9. The method of claim 8,
The both ends of the "a" -shaped plates 203, 203 ', which are relatively short on both sides in the horizontal direction of the outer circumferential surface of the inner horizontal steel pipe 201, are welded and fixed to the inner horizontal steel pipe 201,
On the other hand, the concave guider 202 installed on the left and right sides of the "a" shaped plates 203 and 203 'is preferably disposed along the entire length of the inner horizontal steel pipe 201 for the propulsion straightness of the adjacent inner horizontal steel pipe 201 , The concave guider 202 is welded to both ends of the relatively short "-shaped plates 203, 203 'on both sides in the horizontal direction of the outer peripheral surface of the inner horizontal steel pipe 201 and welded to both ends of the rail- When the inner horizontal steel pipe 201 is first driven and the inner horizontal steel pipe 201 adjacent thereto is propelled, the concave guider 202 is fixed to the concave guider 202, Shaped L-shaped steel 204 attached to a concave guider 202 coupled to an inner horizontal steel pipe 201 adjacent to the rail-shaped " L " Pushing the steel pipe into an arched upper slab to be propelled, How to construct a non-unfired tunnel.
9. The method of claim 8,
Shaped plates 203 and 203 'are welded to and fixed to the outer horizontal steel pipe 201' in the horizontal direction of the outer peripheral surface of the outer horizontal pipe 201 ' Shaped steel is welded and fixed to the outer horizontal steel pipe 201 'on the side of the horizontal direction of the outer peripheral surface of the' 201 '
A rail steel pipe 205 as a guider for pulling up the upper slab is disposed on the side of the outer horizontal steel pipe 201 '. The outer steel pipe 201' is cut in a longitudinal direction of a predetermined width, Is connected to the reinforcing bar 210 and has both ends of the steel pipe structure in the form of an outer horizontal steel pipe 201 'welded with an "L" steel pipe 211. After the outer horizontal steel pipe 201' An RC foundation 212 is installed to excavate the inside of the cut surface with a formulation to lay a rail steel pipe 205. An injection steel pipe 213 is disposed at the center of the RC foundation 212, So as to prevent sag due to the upper load and to reinforce the ground in the vertical downward direction,
There is provided an RC foundation 212 for laying a rail steel pipe 205 with a stud 205 'thereon, a rail steel pipe 205 is installed before the RC foundation 212 is cured, Wherein the steel pipe is press-fitted into the arched upper slab by pushing and pulling the steel pipe through the rail steel pipe (205).

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