KR101716573B1 - The Construction Method of linear curve-shaped non-excavation tunnel with using Forepoling Board and ground reinforcement - Google Patents

Abstract

The present invention relates to a method and construction for the construction of a non-detachable tunnel of a gravel earth. When the toffe is large as before, tunneling of the gravel earth is performed by reinforcing the ground such as multi- And when the toffe is small, the steel tube is used to form a steel pipe loop. However, the conventional method has been avoided and a cushion plate is installed on the crown portion and a JSP or a sole The nailing is used to stabilize the ground reinforcement while the inside is pushed, the concrete lining is finally installed, and then the Forepoling Board, which charges the excavation portion with the stone or mortar, and the non-excavation type tunnel construction that forms the curve with the ground reinforcement In the method,
A first effect that a tunnel can be constructed by using completely different materials of a frame H-shaped steel and a manufactured steel tube without using a conventional hollow steel pipe used in the construction of a non-installation type tunnel,
The second effect is that the upper crown portion is reinforced so that the flat line-shaped curved portion can be applied along a given linear shape because the frame H-shaped beam, the formed beam, the steel rib,
A third effect of arbitrarily adjusting the radius of curvature of the tunnel crown portion to enable coping with changes in the width and height of the tunnel,
The fourth effect is that the construction of the upper crown part, which is a feature of the toe tunnel, is replaced by the earth retaining method,
The fifth effect of eliminating the problem due to the erroneous construction and error in the steel pipe propulsion due to the fact that the heavy steel pipe is not used,
A sixth effect such as enabling the construction of a non-detachable tunnel when the toffe is large or small,
In the concrete lining, the seventh effect of realizing the diversity of the construction because the PC structure is applied together with the construction method of the structure by field installation,
An eighth effect such as provision of ventilation using a wind slab in a long tunnel section to establish a condition for purifying the air quality,
Since the shape can be variously shaped from a straight line to a smooth curved line, it is possible to provide the simplicity and easiness of the tunnel construction and the efficiency of the work as well as the ninth effect that can take various shapes to suit the field conditions, Construction cost, aesthetics, and so on. The present invention relates to a non-detachable tunnel construction method that forms a curved line using a forepoling board and a ground reinforcement that can expect effects of nine points.

Description

       BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of constructing a curved linear tunnel using a foreping board and a ground reinforcement,

The present invention relates to a method and construction for the construction of a non-detachable tunnel of a gravel earth. When the toffe is large as before, tunneling of the gravel earth is performed by reinforcing the ground such as multi- And when the toffe is small, the steel tube is used to form a steel pipe loop. However, the conventional method has been avoided and a cushion plate is installed on the crown portion and a JSP or a sole The nailing is used to stabilize the ground reinforcement while the inside is pushed, the concrete lining is finally installed, and then the Forepoling Board, which charges the excavation portion with the stone or mortar, and the non-excavation type tunnel construction that forms the curve with the ground reinforcement ≪ / RTI >

As a general non-nailing tunnel excavation method, there is a box type front jacking method which is used when the toe is small, and an STM method which is a circular type tunnel excavation method which is used when the toe is large. Non-detachable tunnel excavation method ", which is a patent application No. 2006-89993, and tunnel structures installed by the above method are disclosed in Korean Patent Registration No. 10-0815568, which is a non-installation type tunnel construction Methods and structures therefor are disclosed.

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 which is used in the area having fewer toes, both the small-diameter steel pipe, the medium-diameter steel pipe and the large-diameter steel pipe are utilized. The cost of the steel pipe, the cost of purchasing the steel pipe material, There is a problem in that the construction cost is increased due to a large number of types and numbers,

Also, since the outer shape of the purchased steel pipe is separately manufactured and used, there is a problem that the production cost is increased, and only a straight line is available due to the characteristics of the steel pipe.

Korean Patent No. 10-1073523 Korean Patent No. 10-0973770

SUMMARY OF THE INVENTION 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 a fore-poling board having a frame H- , The upper arched crown part is reinforced with such a foreing board and supported by steel ribs to prevent the outflow of the soil particles. The above method is gradually installed while being installed at regular intervals. Then, the shotcrete that is the first lining is installed to control the displacement of the upper arched crown part. Then, the side wall part of the tunnel lining is reinforced by the JSP and the soil nailing, and the steel rib supporting the upper foreping board is rigidly supported So that the inside is completely excavated to form a space for installing the concrete lining. Since the above method does not use a plurality of steel pipes forming non-detachable tunnels, it can be a factor to reduce the construction cost, and the upper part is formed into an arcuate shape while being gradually excavated, It is aimed to solve the problem that the flat curve can not be applied in the section where the non-adherent method is applied since the construction can be performed along the flat curve in the mine,

Also, the present invention has been devised so that such a method can be applied even when the toffe is large or small. In particular, when the toffe is large and the tunnel is long, a wind slab can be installed for ventilation or the like In the case of small toffees, the upper slab is applied first to stabilize the upper part and excavate the inner part. In the case of a wide width, the column is installed in the center, It is possible to form a tunnel structure of a non-detachable method safely by a variety of methods that can be applied according to the method of forming a tunnel structure by using a PC structure together with a method of forming a tunnel structure by putting the tunnel Therefore, we have diversified the construction and have been able to greatly reduce air and construction cost. It has another purpose.

According to an aspect of the present invention, there is provided a non-detachable tunnel construction method using a foreping board and a ground reinforcement,

(S10) in which a plurality of projecting H-shaped beams and a formed beam are equally spaced in a widthwise arcuate shape at a predetermined height of the tunnel,

A sidewall reinforcement construction step (S20) of installing the JSP and the soil nailing at an interval with the inner excavation along the side wall portion in the height direction of the tunnel,

A concrete lining foundation step (S30) of a tunnel for installing a concrete lining,

An installation step (S40) of installing the concrete lining of the side wall part and the crown part,

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And a floor construction step (S50) in which a vehicle or the like can pass through the floor construction step.

Also, in the present invention, in a non-detachable tunnel construction method that forms a curved line using a foreing board and a ground reinforcement,

(S10) in which a plurality of projecting H-shaped beams and a formed beam are equally spaced in a widthwise arcuate shape at a predetermined height of the tunnel,

A reinforcing construction step (S20) of installing a JSP along a side wall portion in the height direction of the tunnel with the internal excavation at regular intervals,

An upper slab construction step (S30) for stabilizing the upper slab,

A reinforcement construction step (S40) for constructing the soil nailing at a predetermined interval along with the inner excavation along the side wall portion in the height direction of the tunnel,

(S50) of installing a sidewall portion of a tunnel lining for installing a sidewall portion,

A wall construction step (S60) connecting the upper slab and foundation,

And a floor construction step (S70) in which a vehicle or the like can pass through.

Also, in the present invention, in a non-detachable tunnel construction method that forms a curved line using a foreing board and a ground reinforcement,

A central upper reinforcing construction step (S10) in which a plurality of framed H-shaped beams and a fabricated beam, which are arcuate in the width direction and have the same dimensions,

The step of constructing the column supporting the upper part of the tunnel (S20)

A step S30 of upper outer reinforcement for pushing and pushing a plurality of H-shaped steel plates and a steel plate frame in a widthwise arched shape at a predetermined height of the tunnel,

A reinforcing construction step (S40) of installing a JSP at a predetermined interval along with the inner excavation along the side wall portion in the height direction of the tunnel,

An upper slab constructing step (S50) for stabilizing the upper slab,

A reinforcing construction step (S60) of arranging the soil nailing at a predetermined interval along with the inner excavation along the side wall portion in the height direction of the tunnel,

A foundation of a tunnel lining and a wall construction step (S70) for installing a foundation and a side wall,

And a floor construction step (S80) in which a vehicle or the like can pass.

The present invention has the first effect of enabling the construction of a tunnel using completely different materials of frame H-shaped steel and fabricated steel tube without using a conventionally used heavy steel tube to be used in the construction of a non-installation type tunnel ,

The second effect is that the upper crown portion is reinforced so that the flat line-shaped curved portion can be applied along a given linear shape because the frame H-shaped beam, the formed beam, the steel rib,

A third effect of arbitrarily adjusting the radius of curvature of the tunnel crown portion to enable coping with changes in the width and height of the tunnel,

The fourth effect is that the construction of the upper crown part, which is a feature of the toe tunnel, is replaced by the earth retaining method,

The fifth effect of eliminating the problem due to the erroneous construction and error in the steel pipe propulsion due to the fact that the heavy steel pipe is not used,

A sixth effect such as enabling the construction of a non-detachable tunnel when the toffe is large or small,

In the concrete lining, the seventh effect of realizing the diversity of the construction because the PC structure is applied together with the construction method of the structure by field installation,

An eighth effect such as provision of ventilation using a wind slab in a long tunnel section to establish a condition for purifying the air quality,

Since the shape can be variously shaped from a straight line to a smooth curved line, it is possible to provide the simplicity and easiness of the tunnel construction and the efficiency of the work as well as the ninth effect that can take various shapes to suit the field conditions, The cost of construction, beauty, etc. can be expected.

1 to 10 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 schematic view showing a state in which the framed H-shaped beam and the formed beam are press-fitted into the upper crown portion of the tunnel in the present invention, and the beam is progressively excavated while supporting it using steel ribs, As shown in FIG.
FIG. 3 is a view schematically showing a state in which ground reinforcement is performed together with excavation using JSPs at regular intervals in a curved portion forming a side wall of a tunnel after completion of the construction according to FIG. 2
FIG. 4 is a cross-sectional view of the concrete lining in which the soil is reinforced at regular intervals in the remaining curved portions constituting the side walls of the tunnel using the soil nailing after completion of the construction according to FIG. 3, A drawing showing schematically a state of constructing the foundation of
5 is a schematic cross-sectional view of a state in which a concrete lining of a tunnel is installed after completion of construction according to FIG.
FIG. 5A is a schematic cross-sectional view of a state in which a concrete lining wall panel of a tunnel is supported and a state where an upper crown lining is installed by a method of on-site casting after completion of the construction according to FIG. 4
6 is a schematic cross-sectional view showing a state in which a wind slab for ventilation is installed in the case of a long tunnel after completion of the construction according to Fig. 5
7 is a schematic cross-sectional view of a floor construction such as an asphalt that can pass through the vehicle
Fig. 8 is a schematic cross-sectional view of the details of the base of the steel rib and the state in which the pre-tensioning is performed in Fig. 1 to Fig. 7
FIG. 9 is a schematic cross-sectional view of a skeleton H-shaped section and a manufactured skeletal Forepoling board installed at regular intervals, a state in which two steel ribs are sequentially supported, and a skeleton section of a fore- Drawings shown
Figure 10 is an enlarged view of a general cross-section of the detail of the PC concrete lining combined with the spotted base lining
11 to 19 are views showing a second embodiment according to the present invention,
11 is a view showing a process flow according to the working process of the present invention
FIG. 12 is a view showing a state in which the H-shaped and the D-shaped beams, which are Forepoling Boards, are inserted into the upper crown portion of the tunnel of the present invention in a stepped manner and gradually excavated while supporting the same using a steel rib, As shown in FIG.
13 is a view schematically showing a state in which the ground reinforcement is performed together with the excavation using JSPs at regular intervals in the curved portion forming the side wall of the tunnel after completion of the construction according to Fig.
Fig. 14 is a view showing a state after completion of construction according to Fig. An upper crown portion is a view showing a state in which a concrete lining is applied and a shovel supporting the same during a subsequent operation;
15 is a cross-sectional view of the concrete lining in which the ground is reinforced at regular intervals in the remaining curved portions constituting the side walls of the tunnel using the soil nailing after completion of the construction according to FIG. 14, A drawing showing schematically a state of constructing the foundation of
FIG. 16 is a schematic cross-sectional view of a state in which a concrete lining of a wall portion connecting a crown portion of a concrete lining of a tunnel and a foundation is installed after completion of the construction according to FIG. 15
17 is a schematic cross-sectional view showing a state in which floor construction such as asphalt that can pass through the vehicle is performed
Fig. 18 is a view showing a general cross-sectional view of the basic details of the steel rib and the state in which the pre-tensioning is performed in Figs. 11 to 17
19 is a schematic cross-sectional view showing the waterproof detail and the shape of both ends of the upper slab at both the right and left side steel rib base portions of the upper crown portion
20 to 30 are views showing a third embodiment according to the present invention,
20 is a view showing a process flow according to the working process of the present invention
FIG. 21 is a cross-sectional view showing the process flow of the present invention. FIG. 21 is a cross-sectional view of a tunnel according to an embodiment of the present invention. Referring to FIG. 21, the fore and aft steel plates, A drawing showing an overview of the installation state
22 is a view schematically showing a state in which the left and right sides of the steel rib are supported by a girder and the center is excavated and the column is installed after completion of the construction according to FIG.
FIG. 23 is a cross-sectional view showing a state in which, after completion of the construction according to FIG. 22, the fore and aft sections of the fore and aft sections of the fore and aft sections of the tunnel are press- A drawing showing an outline of a state of installing
24 is a view schematically showing a state in which the ground reinforcement is performed together with the excavation using JSP at regular intervals in the curved portion constituting the side wall of the tunnel after completion of the construction according to Fig.
Fig. 24A is a view schematically showing a state in which the upper slab is installed after the completion of the construction in Fig. 23
FIG. 25 is a view showing a state in which after the completion of the construction according to FIG. 24 or FIG. 24A, soil nailing is used to reinforce the ground in the remaining curved portions constituting the side wall of the tunnel at regular intervals, A base of a concrete lining and a state of constructing a wall;
Fig. 26 is a schematic cross-sectional view showing a state in which floor construction such as asphalt or the like that a vehicle can pass is shown
Fig. 27 is a schematic cross-sectional view of the details of the connection between the base of the steel rib and the steel rib in the state in which the pre-tensioning is performed from Fig. 20 to Fig. 26
FIG. 28 is a schematic cross-sectional view showing a state in which the Forepoling Board of the H-shaped steel and the H-shaped steel are installed at regular intervals and the two steel ribs are successively supported thereon, and the H-
29 is a schematic cross-sectional view showing details of a steel rib side beam arrangement as a truss structure
30 is a schematic cross-sectional view of the waterproof detail in the base portions of the right and left side steel ribs of the upper crown portion

In the present invention, the framed H-shaped steel having the same standard and the formed steel section are inserted into the crown portion of the tunnel at an equal interval while the steel rib is supported, and the steel pipe is gradually pushed and repetitively installed. And soilless nailing to stabilize the ground, while excavating the interior to form a space in which the concrete lining can be installed, to install the base of the lining with the drainage channel and the cavity, The lining is installed, and finally the floor is made to allow the vehicles to pass. When the toe is large, PC concrete lining can be assembled or installed, How to put a crown-lined concrete lining first if the method and toes are small It is easy to construct by using the steel ribs of the truss structure in the case where the width is large and the middle column is necessary, so that it is possible to construct the flat curved shape, and the construction cost can be reduced and the air can be shortened present.

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,

The upper reinforcement construction step S10, the side wall reinforcement construction step S20, the foundation system S30, the PC lining assembly and traction step S40, and the floor construction step S50.

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

Upper reinforcement construction step ( S10 )

In this step, as shown in FIG. 2, a predetermined length of the framed H-shaped section 101 and the formed section steel 102, which are the fore-poling boards, is propelled in the oblique direction only in the 120 degree part of the crown side in the region for forming the tunnel 1, The steel rib 103 is supported by the arch-shaped steel rib 103. The steel rib 103 is required to support the upper load sufficiently. The steel rib 103, which is buried when the upper slab is installed, It is preferable to have resistance against the member forces together with the reinforcing bars disposed on the upper slab.

As shown in FIG. 9, the frame H section steel 101 is pierced by using a perforator, the framed H section steel 101 is press fitted into the ground, and then the section steel section 102 is inserted into the frame H section When the ground is hard, the ground is disturbed by using a perforator and then press-fitted, and the fabricated section steel 102 is press-fitted into contact with the interflange web of the frame H section steel 101.

As shown in FIG. 2, the press-fitting is performed at regular intervals and is installed stepwise in a longitudinal direction at a predetermined height of the tunnel 1. The framed H-shaped beam 101, which is the fore- going board of the crown, ) Serves as a retaining structure for supporting the load of the soil above the crown portion of the tunnel 1 and prevents the leakage of the soil particles.

As described above, the framed H-shaped steel 101 is first press-fitted into the fore-formed H-shaped section 101 and the formed section steel 102, which are the foreing board applied in the present invention, It is preferable that the flange of the frame 102 is superimposed on the web of the frame H section steel 101 at this time. The reason for doing so is that the framed H section steel 101, which is a foreing board, And the fabricated H-shaped steel pipe 101 and the fabricated steel pipe 102 integrally move when the force is generated in the manufactured steel pipe 102, In addition, it is preferable that the web be disposed on the lower side when pushing and driving the manufactured section steel 102. This is because the framed H section steel 101 and the formed section steel 102, which are the foreing board, Supporting arch-shaped steel ribs ( 103 in the direction of the arrow.

8, the left and right ends of the steel rib 103 are placed on the concrete block 104a and the stiffener 104b attached to the web of the steel rib 103, A hydraulic jack 104c is installed and operated between the concrete block 104a and the steel rib 103 so that the steel rib 103 is sufficiently pressed on the crown excavation surface foreping board and then the gap is filled at both ends of the steel rib 103 And the hydraulic jack 104c is removed.

After completion of the upper reinforcing construction, the shotcrete 107, which is the first lining, is installed along the excavation surface to correspond to the displacement of the tunnel 1 in the future.

Side wall portion  Reinforcement construction phase ( S20 )

The side wall reinforcement construction step (S20) applied to the present invention after the upper reinforcement construction step (S10) will be described as a JSP (105) and a soil nailing (106).

This is because the JSP 105 and the soilless nailing 106 must be constructed in a stepwise manner along the length of the tunnel 1 in order to distinguish them.

First, as shown in FIG. 3, the construction time and construction basis of the JSP 105 will be described.

The JSP 105 reinforces the ground on the upper left and right walls of the tunnel 1 after completion of the construction up to FIG. 2, so that the reinforcements are arranged to be overlapped with each other while maintaining a constant gap as shown in FIG. 3, The JSP 105 keeps a certain distance and maintains another reinforcing community along the longitudinal direction of the tunnel 1 in order to firmly support the foundation of the steel rib 103 by the construction of the JSP 105 And the ground at the upper end of the wall portion are made rigid so that collapse does not occur during internal excavation so that displacement of the wall portion of the tunnel 1 is prevented.

4, the remainder of the wall of the JSP 105 is ground with the remaining excavation of the tunnel 1, and the soil nailing 106 is radially spaced at regular intervals to stabilize the ground of the wall .

After completion of the above-mentioned reinforcing construction of the side wall portion, a shotcrete 107 as a first lining is installed along the excavation line to correspond to the displacement of the tunnel 1 in the future, and then the seat waterproofing material 108 is attached The groundwater flowing along the surface of the tunnel 1 is prevented from flowing into the inside of the tunnel 1.

Basic construction step ( S30 )

As shown in FIG. 4, after the completion of the above-mentioned all the side wall reinforcement construction step S20, the drainage for treating the ground water flowing on the outer surface of the tunnel 1 concrete lining 3 along the side wall portion and the crown excavation surface The base portion 2 of the concrete lining is installed with a hollow space in which various electric wires and the like are disposed. At this time, the connecting portion of the base portion and the concrete lining 3 is installed stepwise as shown in FIG. 10, (3) is used as a PC structure when building the base part (2) of the concrete lining. In case of using the concrete lining (3) as a PC structure, And a rail device 4a, which is a facility capable of towing the assembled concrete lining 3, is provided.

The concrete lining 3 is preferably provided on the lower surface thereof with a structure for inserting the head portion of the rail device 4a so that the concrete lining 3 can be slid smoothly when the concrete lining 3 is laid. The water inflating index agent is inserted into the base portion 2 of the concrete lining 3 so that the groundwater flowing from the outside of the concrete lining 3 can be blocked and the groove of the concrete lining 3 So that a pressing force is generated and leakage water can be blocked.

Concrete lining installation step (S40)

After the basic construction step S20 is completed, the concrete lining 3 should be installed as shown in FIG. 5. This is a method in which a concrete lining 3 made of a PC is assembled, towed, There are three ways to install the concrete lining on the wall, (3) how to assemble the panel on the mine, and (3) installing all the concrete lining (3) on site.

First, as a first method of installing a concrete lining 3 made of a PC, an oscillating paper is provided on the outside of the vehicle, a panel of a concrete lining 3 made of PC is assembled from the oscillator paper, When the panel of the lining 3 is manufactured, the PC strand 110 is drawn into the PVC pipe 109 embedded therein and connected to the hydraulic jack installed on the reaction force block to actuate the stroke of the hydraulic jack, The bottom surface of the concrete lining 3 made of a PC is formed into a stepped shape so that it can be joined to the base portion 2 in a hinged manner The two sets of the rail devices 4a are provided with a U-shaped section 4b in which the head portion 4b can be fitted so as to reduce the friction at the time of traction. The water expansive index material 111, which can block the inflow of the groundwater, The resulting shape .

Meanwhile, the opening of the crown portion is an inlet for filling the backside void of the concrete lining (3) made of PC, so it should be filled with a stone or mortar and then a seat waterproofing material should be installed on the outer surface and sealed with concrete.

Secondly, as a second method of assembling a panel-concrete lining (3) panel made of PC in a mine, as shown in the detail of FIG. 5, a wall of a concrete lining (3) The panel 3a is installed in the side wall portion first and the wind direction slab support jaw 112 is supported by the support 3c so as to prevent the displacement from occurring in the longitudinal direction of the tunnel 1 and the crown of the concrete lining 3 And the portion 3b is finally installed by a method of on-site casting.

On the other hand, the lower surface of the wall panel 3a of the concrete lining 3 made of PC is manufactured by applying a facility having a step jaw and a water expansive index material 111 as in the first method, The rail device 4a does not need to be installed because it is not a method of towing and installing. The wall panel 3 a of the wall-portion concrete lining 3 made of PC is firstly installed in the side wall portion and then charged into the cavity of the back surface of the wall panel 3 a using the abrasive or mortar and then the crown portion 3 b ) Is finally installed by the method of putting on the spot.

Thirdly, as a third method of casting in situ, a steel form mold, which is a conventional method, is prepared and used. In connection with the base portion 2 of the concrete lining, And the construction method should be adopted.

Therefore, in the above three methods, the first method is a three-hinge type structure in which the central portion of the tunnel 1 and the upper end portions of the bases on both sides are hinged, and the second method is a three- And the upper part is a hinge-type 2-hinge type structure, and the third method has a fixed-type structure, so various installation methods can be applied according to the site conditions.

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Floor construction step ( S50 )

As shown in FIG. 7, this step is a step of asphalt pavement on the floor where the vehicle can pass. When the excavator is excavated for asphalt pavement, the left and right lining bases of the tunnel 1 are connected so that the concrete lining does not slide due to the earth pressure The concrete rods (4) are constructed, and all construction is completed by laying asphalt and finishing the floor.

Second Example

As shown in FIG. 11,

The upper reinforcing construction step S10, the side wall part 1 reinforcing construction step S20, the upper slab construction step S30, the side wall part 2 reinforcing construction step S40, the foundation construction step S50, S60), and a floor construction step (S70).

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

Upper reinforcement construction step ( S10 )

In this step, as shown in FIG. 12, a predetermined length of the framed H-shaped beam 101 and the fabricated beam 102, which are the fore-poling boards, is propelled in the oblique direction only in the region of the crown 120 side in the region for forming the tunnel 1, The steel rib 103 is supported by the arch-shaped steel rib 103. The steel rib 103 is required to support the upper load sufficiently. The steel rib 103, which is buried when the upper slab is installed, It is preferable to have resistance against the member forces together with the reinforcing bars disposed on the upper slab.

On the other hand, the left and right ends of the steel rib 103 are provided with supplementary supports 103a for reinforcing the steel ribs 103. This is because when the width of the tunnel 1 is large, the steel ribs 103 are supported To shorten the length of the span to ensure safety. 9, a plurality of holes are drilled using a perforator, and the framed H-shaped beam 101 is press-fitted into the ground. Subsequently, the formed beam 102 is inserted into the frame H-shaped beam 101 When the ground is hard, the ground is disturbed by using a perforator, and then the indentation is made to be indented, and the fabricated section steel 102 is brought into contact with the interflange web of the frame H section steel 101 to be indented.

As shown in FIG. 12, the press-fitting is performed at regular intervals and is installed stepwise in a longitudinal direction at a predetermined height of the tunnel 1. The framed H-shaped beam 101, which is a fore- ) Serves as a retaining structure for supporting the load of the soil above the crown portion of the tunnel 1 and prevents the leakage of the soil particles.

As described above, the framed H-shaped steel 101 is first press-fitted into the fore-formed H-shaped section 101 and the formed section steel 102, which are the foreing board applied in the present invention, It is preferable that the flange of the frame 102 is superimposed on the web of the frame H section steel 101 at this time. The reason for doing so is that the framed H section steel 101, which is a foreing board, And the fabricated H-shaped steel pipe 101 and the fabricated steel pipe 102 integrally move when the force is generated in the manufactured steel pipe 102, In addition, it is preferable that the web be disposed on the lower side when pushing and driving the manufactured section steel 102. This is because the framed H section steel 101 and the formed section steel 102, which are the foreing board, Supporting arch-shaped steel ribs ( 103 in the direction of the arrow.

8, the left and right ends of the steel rib 103 are placed on the concrete block 104a and the stiffener 104b attached to the web of the steel rib 103, A hydraulic jack 104c is installed and operated between the concrete block 104a and the steel rib 103 so that the steel rib 103 is sufficiently pressed on the crown excavation surface foreping board and then the gap is filled at both ends of the steel rib 103 And the hydraulic jack 104c is removed.

After the upper reinforcing step S10 is finished, the shotcrete 107, which is the first lining, is placed along the excavation surface to correspond to the displacement of the tunnel 1 in the future, Prepare for slab (6) construction.

Side wall portion 1  Reinforcement construction phase ( S20 )

The side wall reinforcement construction step (S20) applied to the present invention after the upper reinforcement construction step (S10) will be described as a JSP (105) and a soil nailing (106).

This is because the JSP 105 and the soilless nailing 106 must be constructed in a stepwise manner along the length of the tunnel 1 in order to distinguish them.

First, as shown in FIG. 13, the construction time and construction basis of the JSP 105 will be described.

The JSP 105 reinforces the ground on the upper left and right walls of the tunnel 1 after completion of the construction up to FIG. 12, so that the JSPs 105 are spaced apart from each other at regular intervals as shown in FIG. 13, The JSP 105 keeps a certain distance and maintains another reinforcing community along the longitudinal direction of the tunnel 1 in order to firmly support the foundation of the steel rib 103 by the construction of the JSP 105 And the ground at the upper end of the wall portion are made rigid so that collapse does not occur during internal excavation so that displacement of the wall portion of the tunnel 1 is prevented.

Upper slab construction step ( S30 )

14, after the reinforcing and constructing step S20 of the side wall part 1 is completed, the upper slab 6 is supported by the JSP 105 at both ends of the upper slab 6, As shown in Fig. 10, it is preferable that both ends of the upper slab 6 are press-fitted into the ground because they are formed to be longer than the width of the wall and are excavated to the inside of the upper slab 6, However, this is a measure to prevent the upper slab 6 from dropping. At this time, the waterproofing of the sheet is performed outside the upper slab 6 before the construction of the upper slab 6 so that the groundwater can not penetrate, and the central portion of the slabs 116 and the like supporting the upper slab 6 are not dismantled And is held until the wall portion construction is completed.

Side wall portion 2  Reinforcement construction phase ( S40 )

The side wall reinforcement construction step S40 applied to the upper slab construction step S30 according to the present invention is a step of constructing the soil nailing ring 106. As shown in Fig. 15, after the residual excavation of the tunnel 1, The ring 106 is provided in a radial pattern with a predetermined interval to stabilize the ground of the wall portion.

After completion of the above-mentioned reinforcing construction of the side wall portion, a shotcrete 107 as a first lining is installed along the excavation line to correspond to the displacement of the tunnel 1 in the future, and then the seat waterproofing material 108 is attached The groundwater flowing along the surface of the tunnel 1 is prevented from flowing into the inside of the tunnel 1.

Basic construction step ( S50 )

After completion of all the above-mentioned side wall portion reinforcing and constructing step S40, as shown in FIG. 15, drainage pipes for treating the groundwater flowing on the outer surface of the tunnel 1 concrete lining 3 along the excavation surface of the side wall, The reinforcing bars and the like are preferably provided so that the connection between the foundation and the concrete lining 3 can be strengthened. In this case, It is desirable to install the part (2) by a method of putting it into the spot considering the complicated structure and the like.

Wall construction step ( S60 )

After the basic construction step S50 is completed, the wall part should be installed as shown in FIG. 16, but it is installed in a structure of a wall 7 that can be connected to the upper slab 6 and the foundation part by a method of site installation. And a gap due to drying shrinkage may occur in the process of curing the concrete connected to the upper slab 6 at the time of site casting, so that a non-shrinkage mortar 117 or the like is used so that the gap can be faithfully filled .

On the other hand, the connection between the wall portion 3a and the upper slab 6 is performed after the reinforcing bars are joined by the coupler.

Floor construction step ( S70 )

As shown in FIG. 17, in this step, asphalt pavement is carried out on the floor where the vehicle can pass, so that when the pavement is excavated for asphalt pavement, the left and right bases 2 of the tunnel 1 are slid The concrete bar (4) to be connected is constructed, and the completion of the construction is completed by laying the asphalt and finishing the floor.

Thus, when all the constructions are completed, the concrete lining 3 is configured as shown in FIG.

Third Example

The present invention, as shown in FIG. 20,

A middle upper reinforcing construction step S10, a column construction step S20, an upper upper reinforcing construction step S30, a side wall part 1 reinforcing construction step S40, an upper slab part construction step S50, 2 reinforcement construction step (S6), a foundation and wall construction step (S70), and a floor construction step (S80).

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

Central upper reinforcement construction step ( S10 )

In this step, as shown in FIG. 21, a predetermined length of the framed H-shaped section 101 and the formed section steel 102, which are the fore-poling boards, is propelled in the oblique direction only in the 120 part of the crown side in the region for forming the tunnel 1, Means that the steel rib 103 is supported by the steel rib 103. The steel rib 103 should be a standard for sufficiently supporting the upper load. The steel rib 103, which is buried when the upper slab is installed, So as to have a resistance against the reinforcing bars disposed on the upper slab.

As shown in FIG. 29, the steel rib 103 is formed by assembling the arch-shaped steel rib 103d in the shape of a truss structure using the 'L' shaped steel 103b and supporting the upper load weight This is to reinforce the central portion of the upper crown portion steel rib 103 to secure safety when the width of the tunnel 1 is large. As shown in FIG. 28, the frame H section steel 101 is formed by drilling a plurality of holes by using a perforator and then press-fitting the frame H section steel 101 into the ground. Subsequently, When the ground is hard, the ground is disturbed by using a perforator, and then the indentation is made to be indented, and the fabricated section steel 102 is brought into contact with the interflange web of the frame H section steel 101 to be indented.

As shown in FIG. 21, the press-fitting is performed at regular intervals (8), and is installed stepwise in a longitudinal direction at a predetermined height of the vine tunnel 1. The framed H-shaped steel 101, which is a foreing board of the crown, The section steel 102 serves as a retaining member for supporting the load of the soil above the crown of the tunnel 1, and measures to prevent the leakage of the soil particles.

As described above, the framed H-shaped steel 101 is first press-fitted into the fore-formed H-shaped section 101 and the formed section steel 102, which are the foreing board applied in the present invention, It is preferable that the flange of the frame 102 is superimposed on the web of the frame H section steel 101 at this time. The reason for doing so is that the framed H section steel 101, which is a foreing board, And the fabricated H-shaped steel pipe 101 and the fabricated steel pipe 102 integrally move when the force is generated in the manufactured steel pipe 102, In addition, it is preferable that the web be disposed on the lower side when pushing and driving the manufactured section steel 102. This is because the framed H section steel 101 and the formed section steel 102, which are the foreing board, And the steel rib 103 supporting it So that the contact surface can be increased.

8, the left and right ends of the steel rib 103 are placed on the concrete block 104a and the stiffener 104b attached to the web of the steel rib 103, A hydraulic jack 104c is installed and operated between the concrete block 104a and the steel rib 103 so that the steel rib 103 is sufficiently pressed on the crown excavation surface foreping board and then the gap is filled at both ends of the steel rib 103 And the hydraulic jack 104c is removed.

The column portion  Construction phase ( S20 )

This step is to reinforce the center portion before the upper upper reinforcement construction step S10 is completed and before the upper upper reinforcement construction step S30 is performed. As shown in FIG. 22, The steel rib 103 is further reinforced so as to be supported by the guard posts 103c and then the lower portion of the center is further excavated 9 to provide a column to support the center upper portion so as to ensure safety.

Outer upper  Reinforcement construction phase ( S30 )

In this step, as shown in FIG. 23, in the region for forming the tunnel 1 as in the central upper reinforcement construction step S10, a certain amount of the fore-and-aft H- The steel rib 103 is supported by the steel rib 103 so that the steel rib 103 can support the upper load sufficiently. The steel rib 103, which is buried when the upper slab is installed, Is configured to have a resistance force together with the reinforcing bars disposed on the upper slab with respect to the member forces acting on the upper slab.

As shown in FIG. 23, both ends of the steel ribs are supplemented by supplementing the auxiliary support 103a. This is because when the width of the tunnel 1 is large, the support for supporting the upper load is formed as short as possible So as to promote safety. As shown in FIG. 28, the frame H section steel 101 is formed by drilling a plurality of holes by using a perforator and then press-fitting the frame H section steel 101 into the ground. Subsequently, When the ground is hard, the ground is disturbed by using a perforator, and then the indentation is made to be indented, and the fabricated section steel 102 is brought into contact with the interflange web of the frame H section steel 101 to be indented.

As shown in FIG. 21, the indentation 10 is performed at a constant interval and is installed stepwise in a longitudinal direction at a predetermined height of the vaginal tunnel 1. The framed H-shaped steel 101, which is a foreing board of the crown, The c-shaped section 102 serves as a retaining member for supporting the load on the crown portion of the tunnel 1 and prevents the leakage of the particles.

As described above, the framed H-shaped steel 101 is first press-fitted into the fore-formed H-shaped section 101 and the formed section steel 102, which are the foreing board applied in the present invention, It is preferable that the flange of the frame 102 is superimposed on the web of the frame H section steel 101 at this time. The reason for doing so is that the framed H section steel 101, which is a foreing board, And the fabricated H-shaped steel pipe 101 and the fabricated steel pipe 102 integrally move when the force is generated in the manufactured steel pipe 102, In addition, it is preferable that the web be disposed on the lower side when pushing and driving the manufactured section steel 102. This is because the framed H section steel 101 and the formed section steel 102, which are the foreing board, Supporting arch-shaped steel ribs ( 103 in the direction of the arrow.

8, the left and right ends of the steel rib 103 are placed on the concrete block 104a and the stiffener 104b attached to the web of the steel rib 103, A hydraulic jack 104c is installed and operated between the concrete block 104a and the steel rib 103 so that the steel rib 103 is sufficiently pressed on the crown excavation surface foreping board and then the gap is filled at both ends of the steel rib 103 And the hydraulic jack 104c is removed.

Side wall portion 1  Reinforcement construction phase ( S40 )

The side wall reinforcement construction step (S40) applied to the present invention, which is followed by the upper side reinforcement construction step (S30), will be described as a JSP (105) and a soilless nailing (106).

This is because the JSP 105 and the soilless nailing 106 must be constructed in a stepwise manner along the length of the tunnel 1 in order to distinguish them.

First, as shown in FIG. 24, the construction time and construction basis of the JSP 105 will be described.

The JSP 105 finishes the construction up to FIG. 23 and reinforces the ground at the upper left and right walls of the tunnel 1 in the longitudinal direction of the tunnel 1 with the excavation 11. As shown in FIG. 24, If the JSP is installed in the JSP (105), it is necessary to keep the distance between the JSPs and the reinforcements. So as to firmly support the base of the steel rib 103 and to secure the ground at the top of the wall so that collapse does not occur during internal excavation to prevent displacement of the wall of the tunnel 1.

Upper slab construction step ( S50 )

24A, after the reinforcing and constructing step S40 of the side wall 1 is completed, the upper slab 6 is supported by the JSP 105 at both ends thereof, It is preferable that the both ends of the upper slab 6 are press-fitted into the ground when the wall is excavated and the upper slab 6 is excavated inside the upper slab 6 when the wall is excavated However, this is a measure to prevent the upper slab 6 from dropping. At this time, the waterproofing of the sheet is performed outside the upper slab 6 before the construction of the upper slab 6 to prevent penetration of the groundwater, and considering the connection with the central pillar supporting the upper slab 6, .

Side wall portion 2  Reinforcement construction phase ( S60 )

After completion of the construction of the upper slab 6, a partial excavation 12 is made in the longitudinal direction and the vertical direction of the tunnel 1 to form the soil nailing 106 at a constant spacing distance from the remainder of the wall, So as to stabilize the ground of the wall portion.

After the completion of the above-described reinforcement work of the side wall portion, a shotcrete 107 as a first lining is installed along the excavation line to correspond to the displacement of the tunnel 1 in the future, and then the seat waterproofing material 108 is slid into the upper slab It is preferable that the groundwater flowing along the excavation surface is prevented from flowing into the inside of the tunnel 1.

Foundation and Wall Construction Steps ( S70 )

25, after the reinforcing and constructing step S60 of the side wall part 2 is completed, a drainage duct for treating the groundwater flowing on the outer surface of the tunnel 1 concrete lining 3 along the excavation surface of the side wall, The reinforcing bars and the like are preferably provided so that the connection between the foundation and the concrete lining 3 can be strengthened. In this case, It is desirable to install the part 2 by a method of putting it into the spot considering the complicated structure etc. and then to install the wall part, It is preferable that the installation space is filled with the structure, and in the process of curing the concrete connected with the upper slab (6) in the field installation, gaps due to drying shrinkage may occur, Shrinkage mortar 117 or the like is used so as to make the shrinkage mortar 117 and so on.

Meanwhile, as shown in FIG. 31, the connection between the wall portion 3a and the upper slab 6 is performed after the reinforcing bars are joined by the coupler.

Floor construction step ( S80 )

26, when the remaining finishing excavation 13 is performed for the asphalt pavement, as shown in FIG. 26, the asphalt pavement is carried out on the floor where the vehicle can pass, so that the sliding portion of the wall body does not slide due to the earth pressure. And a concrete rod (4) connecting the foundation part (2) is installed, and the construction is completed by laying the asphalt and finishing the floor.

Thus, when all the construction is finished, the concrete lining 3 is formed in the shape as shown in FIG.

- reference numerals in the first embodiment -
S10; Upper reinforcement construction step
S20; Side wall reinforcement construction step
S30; Basic construction step
S40; Concrete lining Installation phase
S50; Floor construction phase
- reference numerals in the second embodiment -
S10; Upper reinforcement construction step
S20; Side wall part 1 reinforcement construction step
S30; Upper slab construction step
S40; Side wall part 2 reinforcement construction step
S50; Basic construction step
S60; Wall construction step
S70; Floor construction phase
- reference numerals in the third embodiment -
S10; Central upper reinforcement construction step
S20; Pillar Construction Step
S30; Outside upper reinforcement construction step
S40; Side wall part 1 reinforcement construction step
S50; Upper slab construction step
S60; Side wall part 2 reinforcement construction step
S70; Foundation and Wall Construction Steps
S80; Floor construction phase
One; Tunnel 2; Base portion
3; Concrete lining 3a; Wall panel
3b; Crown portion 3c; Support
4; Concrete bars 4a; Rail device
4b; D section steel 5; Wind slab
6; An upper slab 7; Wall
8; Excavation 9; Additional excavation
10; Remaining excavation 11; Progressive excavation
12; Partial excavation 13; Finishing excavation
101; Frame H section steel 102; Manufactured steel
103; Steel ribs 103a; Secondary support
103b; L section steel 103c; Guard
103d; Arched steel ribs 104; Steel rib base
104a; A concrete block 104b; Stiffener
104c; Hydraulic jack 105; JSP
106; Soil nailing 107; Shotcrete
108; Sheet waterproofing material 109; PVC pipe
110; PC Strand 111; Water Expansive Index Material
112; The base jaw 113; Connecting ring
114; PC Strand 115; septum
116; Eastbound 117; Non-shrink mortar

Claims (12)

A method of constructing a non-detachable tunnel construction,
(S10) in which a plurality of projecting H-shaped beams and a formed beam are equally spaced in a widthwise arcuate shape at a predetermined height of the tunnel,
A sidewall reinforcement construction step (S20) of installing the JSP and the soil nailing at an interval with the inner excavation along the side wall portion in the height direction of the tunnel,
A concrete lining foundation step (S30) of a tunnel for installing a concrete lining,
A concrete lining installation step (S40) in the side wall portion and the crown portion,
And a floor construction step (S50) in which a vehicle can pass through. The method of constructing a curved linear shape using a foreping board and a ground reinforcement.
A method of constructing a non-detachable tunnel construction,
(S10) in which a plurality of projecting H-shaped beams and a formed beam are equally spaced in a widthwise arcuate shape at a predetermined height of the tunnel,
A reinforcing construction step (S20) of installing a JSP along a side wall portion in the height direction of the tunnel with the internal excavation at regular intervals,
An upper slab construction step (S30) for stabilizing the upper slab,
A reinforcement construction step (S40) for constructing the soil nailing at a predetermined interval along with the inner excavation along the side wall portion in the height direction of the tunnel,
(S50) of installing a sidewall portion of a tunnel lining for installing a sidewall portion,
A wall construction step (S60) connecting the upper slab and foundation,
And a bottom construction step (S70) in which a vehicle can pass through. The method for constructing a non-detachable tunnel forming a curved line using a foreping board and a ground reinforcement.
In a non-excavating tunnel construction method using curved line shape using Forepoling Board and ground reinforcement
A central upper reinforcing construction step (S10) in which a plurality of framed H-shaped beams and a fabricated beam, which are arcuate in the width direction and have the same dimensions,
The step of constructing the column supporting the upper part of the tunnel (S20)
A step S30 of upper outer reinforcement for pushing and pushing a plurality of H-shaped steel plates and a steel plate frame in a widthwise arched shape at a predetermined height of the tunnel,
A reinforcing construction step (S40) of installing a JSP at a predetermined interval along with the inner excavation along the side wall portion in the height direction of the tunnel,
An upper slab constructing step (S50) for stabilizing the upper slab,
A reinforcing construction step (S60) of arranging the soil nailing at a predetermined interval along with the inner excavation along the side wall portion in the height direction of the tunnel,
A foundation of a tunnel lining and a wall construction step (S70) for installing a foundation and a side wall,
And a floor construction step (S80) in which a vehicle can pass through. The method of constructing a curved linear shape using a foreing board and a ground reinforcement.
4. The method according to any one of claims 1 to 3,
A certain length of the framed H-shaped steel 101 and the fabricated steel 102, which are the Forepoling Boards, is propelled in the oblique direction from the region for forming the tunnel 1 to the crown portion side so that the two arched steel ribs 103 are supported , The steel rib 103 is designed so as to be able to sufficiently support the upper load, and the steel rib 103 buried in the construction of the upper slab is resistant to the force acting on the upper slab, Respectively,
The framed H-shaped beam 101 is pierced by a perforator and then the framed H-shaped beam 101 is press-fitted into the underground. Subsequently, the formed beam 102 is inserted between the beamed H-shaped beams 101 When the ground is hard, the ground is disturbed by using a perforator, and then press-fitting is performed while contacting the flange web of the H-shaped beam 101 of the frame,
When pushing and driving the fabricated steel pipe 102, the web is arranged so as to be lowered so that the contact surface between the framed H-shaped steel pipe 101, which is a foreing board, and the arched steel rib 103 supporting the fabricated steel pipe 102, However,
The left and right ends of the steel rib 103 are placed on the concrete block 104a and a hydraulic jack 104c is installed between the stiffener 104b attached to the steel rib 103 and the concrete block 104a to operate the steel The Forepoling Board and the ground reinforcement which are constructed by making the ribs 103 sufficiently compressed on the excavation surface of the crown excavation surface, filling the gap between the both ends of the steel rib 103 and removing the hydraulic jack 104c, A method of constructing a non -
The method of claim 3,
When the width of the tunnel 1 is large, the arch-shaped steel rib 103d reinforcing the center portion of the upper crown portion steel rib 103 is supported in the shape of a truss structure using the 'L' portion steel 103b A method of constructing a curved line using a Forepoling Board and a ground reinforcement.
4. The method according to any one of claims 1 to 3,
The JSP 105 is installed at the upper end of the wall portion so as to firmly support the foundation of the steel rib 103 and to secure the ground at the upper end of the wall portion so that collapse does not occur during internal excavation, It is necessary to arrange the reinforcements so that they are overlapped with each other by maintaining a constant interval by reinforcing the subsurface. If the community is formed to some extent, it maintains another reinforcement community at a constant interval and proceeds along the longitudinal direction of the tunnel (1) A method of constructing a curved line using a Forepoling Board and a ground reinforcement.
delete delete The method according to claim 1,
(3) As a method to assemble the panel in the mine, a wall panel (3a) of concrete lining (3) made of PC by using a crane is installed in the side wall part first, 112 are supported by the support 3c so as to prevent displacement from occurring in the longitudinal direction of the tunnel 1,
The lower surface of the wall panel 3a of the concrete lining 3 made of PC is manufactured so as to be hinged to the foundation 2 by the hinge method. The wall lining 3, the wall panel 3a ) Is filled with stone or mortar to the backside porosity of the tunnel, and then the crown part (3b) is finally installed by the method of on-site casting.
delete 4. The method according to any one of claims 2 and 3,
Both ends of the upper slab 6 are supported by the JSP 105 so that the arcuate upper slab 6 does not fall down while the shape of the upper slab 6 is longer than the width of the wall. Since the slab 6 is excavated to the inside, both ends are press-fitted into the ground. The waterproofing of the sheet is performed outside the upper slab 6 before the construction of the upper slab 6 to prevent penetration of the groundwater. A preforming board configured to support a central portion of the upper slab 6, and a non-detachable tunnel construction method that forms a curved line using the ground reinforcement.
The method of claim 3,
A Forepoling Board for further reinforcing the steel ribs 103 at both ends of the central upper reinforcing construction step S10 so as to be supported by the guard posts 103c and then drilling the central lower portion 9 to support the central upper portion by installing columns A method of constructing a curved linear tunnel using ground reinforcement.

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