JP7330052B2 - Tunnel repair method and repair equipment - Google Patents

Description

TECHNICAL FIELD The present invention relates to a tunnel repairing method and apparatus for repairing the inner surface of a tunnel in service.

Among the tunnels in service, there are many tunnels in need of repair due to the deterioration of the durability of the concrete lining that lines the inner surface due to the passage of time since construction, and various repair methods have been proposed. . For example, in the repair method described in Patent Document 1, a detachment removal device and a center are mounted on a portal carriage that is movable along the extension direction of the tunnel, and by operating these devices, the repair concrete layer is removed. It is formed continuously.

However, in such a repair construction method, it was necessary to carry out construction while regulating the passage of tunnels in service. In addition, even if the tunnel is closed only at night and the restrictions are lifted during the daytime when the traffic volume is high, if the length of the tunnel is long and the distance from the tunnel mouth to the construction site is long, a gate-type trolley will be used to reach the construction site. It takes time to carry in or to carry out the gate type cart when the construction is completed. Therefore, there is a problem that the construction time is reduced and the construction period is lengthened due to the time required to move the gantry cart within the limited construction time.

JP-A-2002-38891

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a tunnel repairing method and a repairing apparatus that can be carried out while allowing vehicles and other vehicles to safely pass through even if the tunnel is in service.

In the present invention, a form part of a tunnel repair device is arranged inside a lining part of a tunnel in service at a predetermined interval, and a repair material is placed between the lining part and the form part. A tunnel repairing method for repairing the inner surface of a tunnel by placing a In addition to arranging the above-mentioned formwork part, on the other half section , a protection part that allows a passage to pass through the inside is arranged. A carriage is provided that supports the frame and is capable of traveling in the direction of extension of the tunnel, and the protective section and the carriage are connected in the width direction.

Further, the present invention is a tunnel repairing device for repairing the inner surface of a tunnel by placing a repairing material on the inner surface side of the lining part of a tunnel in service, the half section in the width direction of the tunnel. A formwork part arranged in one half section and formed in an arc corresponding to the lining part of the half section, and a protective part arranged in the other half section and allowing a passage to pass through the inside The protection section is provided with a traveling section that can travel in the tunnel extension direction, and a truck section that supports the formwork section and can travel in the tunnel extension direction, and the protection section and the The bogie portion is connected in the width direction .

The above repair can be done by cutting a predetermined thickness on the inner surface of the lining and then pouring a repair material such as concrete or mortar with high fluidity. It shall include additional driving etc.
The tunnel may have a cross-sectional shape with a curved inner surface such as a crown shape or a horseshoe shape.

The half-sections are not limited to those obtained by dividing the tunnel section into two parts in the width direction. One half-section may be larger than the other half-section. For example, one half section and the other half section may overlap in the width direction.

The corresponding arc of the lining portion of the half section described above may be an arc with an arc length greater than the half section, an arc with an arc length corresponding to the half section, or an arc with an arc length shorter than the half section. It may be arcuate.
The repair material may be concrete, mortar, or resin having high fluidity, as long as it satisfies required performance such as strength.

According to this invention, even in a tunnel in service, it is possible to construct the tunnel while allowing vehicles and other vehicles to safely pass through it.
More specifically, the formwork part, which is placed inside the lining part of the tunnel in service at a predetermined interval, is formed in an arc shape corresponding to one of the half cross-sections in the width direction of the tunnel. At the same time, on the other half section, a protection section is arranged through which the passage can pass.

Therefore, construction can be performed on one half section of the tunnel, and pedestrians can pass through the other half section. In addition, since the pedestrian passing through the other half section passes through the inside of the protective section, it can pass safely while being protected by the protective section against the construction performed on the one section.

Further, the protective section is provided with a traveling section capable of traveling in the direction of extension of the tunnel, and is provided with a truck section capable of traveling in the direction of extension of the tunnel while supporting the formwork section. are connected in the width direction, it is possible to repair by moving the formwork along with the protective section in the extension direction of the tunnel along with construction in one half section.

As an aspect of the present invention, the protection portion may be longer in the tunnel extending direction than the formwork portion.
The protective portion may be longer than the formwork on only one side in the direction of extension of the tunnel, but it is preferable that it is longer on both sides.

According to this invention, one half-section can be repaired while the other half-section is allowed to pass through more safely.
More specifically, since the protection section is longer than the formwork in the direction of extension of the tunnel, the pedestrian passing through the protection section is within the construction range of the formwork arranged in one half section. One half-section can be repaired while the other half-section is protected by a protective section beyond .

Further, as a mode of the present invention, a countering portion provided in the protective portion may resist pressure acting on the formwork portion from the repair material to be placed.
According to the present invention, it is possible to resist the pressure acting on the formwork from the repair material to be placed through the protective section. Therefore, it is possible to prevent the formwork from moving due to the placing pressure of the repair material.
In addition, the opposing portion may oppose not only the tunnel width direction but also the upward pressure or upward pressure against the arc-shaped form portion corresponding to the half-section.

Further, as an aspect of the present invention, the form part may be supported by a support part from the lining part.
According to this invention, since the form part is supported from the lining part via the supporting part, it is possible to resist the pressure acting on the form part from the repair material to be placed. Therefore, it is possible to prevent the formwork from moving due to the placing pressure of the repair material.

The support portion can support the formwork portion against the pulling force of an anchor bolt or the like installed in the lining portion. Moreover, the support part may support a part of the formwork part, or may support the entirety of the formwork part.

Further, as an aspect of the present invention, the formwork part formed in an arc shape is composed of a plurality of formwork-constituting parts and a pivoting part for pivoting the formwork-constituting parts, and is configured to be foldable. good too.
According to the present invention, the form part can be folded to be compact, and the refurbishing device can be easily moved.

Further, as an aspect of the present invention, the formwork-constituting portion includes a formwork-constituting main portion supported so as to be movable in the vertical direction, and is pivotably connected to the formwork-constituting main portion by the pivoting portion. A moving part may be provided for moving the slave formwork part to a predetermined pivot position with respect to the main formwork part.

According to the present invention, it is possible to reliably form the foldable formwork into a desired shape as the formwork.
More specifically, the slave formwork section, which is pivotably connected by the pivoting section, is moved to a predetermined pivot position by the moving section with respect to the main formwork section supported so as to be vertically movable. Therefore, the foldable formwork can be reliably formed into a desired shape as a formwork, and the formwork can be arranged at a desired position with respect to the lining part.

Further, as an aspect of the present invention, the secondary formwork section may be folded with respect to the main formwork section by the pivoting section, and the formwork section may be moved in the tunnel shaft together with the protective section. .
According to the present invention, by moving the formwork part in which the formwork-constituting follower part is folded by the pivoting part together with the protective part in the tunnel extension direction, construction can be efficiently and safely carried out. can be done.

ADVANTAGE OF THE INVENTION According to the present invention, it is possible to provide a tunnel repairing method and a repairing device that can be constructed while allowing vehicles and other vehicles to pass safely even in a tunnel that is in service.

A front view of a state in which the repair device is installed inside the tunnel. AA sectional view in FIG. Side view of the refurbishment device. Enlarged view of the tab. Flowchart of the tunnel repair method. State explanatory drawing in a tunnel repair construction method. State explanatory drawing in a tunnel repair construction method. State explanatory drawing in a tunnel repair construction method. State explanatory drawing in a tunnel repair construction method.

An embodiment of the invention will be described with reference to FIGS. 1 to 9. FIG.
1 shows a front view of a state in which the repair device 10 is installed inside the tunnel, FIG. 2 shows a sectional view along line AA in FIG. 1, FIG. 3 shows a side view of the repair device 10, and FIG. , and FIG. 5 shows a flow chart of the tunnel repair work method.

6 to 9 show state explanatory diagrams in the tunnel repair work method. Specifically, FIG. 6(a) shows a front view of the tunnel 1 before repair, and FIG. 6(a) shows a front view of the tunnel 1 after repair.

FIG. 7(a) shows a front view of the tunnel 1 after cutting the lining of the forward route, and FIG. 7(b) shows a front view of a state in which the repair device 10 is moved to the construction site of the forward route in the tunnel 1. there is FIG. 8(a) shows a front view of a state in which the repair device 10 is installed at the construction site of the outbound route in the tunnel 1, and FIG. 8(b) is a front view of a state in which concrete is placed at the construction site of the outbound route. showing.

9(a) shows a front view of the tunnel 1 after cutting the lining on the return trip, and FIG. 9(b) shows a front view of the state where the repair device 10 is moved to the construction site on the return trip in the tunnel 1. there is
1 is the width direction W, the up-down direction is the height direction H, and the left-right direction in FIG.

The repairing device 10 is a device for repairing the tunnel 1 by replacing the concrete lining 2 on the inner surface of the tunnel 1 by a predetermined thickness on the inner surface side with highly fluid concrete.
As shown in FIG. 1, the tunnel 1 is a road tunnel having a crown-shaped cross section, an inner surface covered with a concrete lining 2, and a two-lane road provided inside. The tunnel 1 may have a cross-sectional shape such as a horseshoe shape, or may be provided with a two-way road with one lane in each direction.

For a tunnel 1 that requires repair due to a decrease in the durability of the concrete lining 2, the tunnel repair method using the repair device 10 cuts the tunnel 1 from the inner surface by a predetermined thickness, and places the cut portion in highly fluid concrete. It is a so-called replacement construction method in which the replacement lining part 3 is constructed by placing.
The concrete lining 2 may be shotcrete, reinforced concrete, plain concrete, or the like.

The repairing device 10 used in the repairing method includes a center 20 arranged in a half section on the construction side of a half section that is half of the width direction W of the tunnel 1 having a crown-shaped cross section, and a center 20 arranged in the half section on the other side. It is composed of a protector 30 that is
In the following description, of the half sections of the crown-shaped tunnel 1, the construction side half section is referred to as construction side half section X, and the other side half section is referred to as passage side half section Y.

The center 20 arranged in the construction-side half-section X (or the traffic-side half-section Y) includes a body portion 21 having a substantially well-shaped shape when viewed from the front, and a side of the concrete lining 2 side from above the body portion 21. It is composed of a formwork part 22 provided at the same time.
The main body 21 is composed of a pillar 217 provided at its lower end with a wheel 211 rolling on a temporary rail 6 provided on the road surface 5 of the tunnel 1, a beam 213, and upper pillars 215a and 215b. It has a substantially I-shaped frame shape and is formed with a predetermined length in the depth direction L. As shown in FIG. Two columns 217 and two upper columns 215a and 215b are arranged in the width direction W with a predetermined interval therebetween.

The main body 21 is provided with a height adjusting portion 212 that can be expanded and contracted in the height direction H on a pillar 217 above the wheel 211 , and a stage 214 is formed on the beam 213 above. Also, the beam 213 is provided with upper pillars 215a and 215b having a height corresponding to the arc shape of the concrete lining 2 so as to extend upward.

The beam 213 extends toward the concrete lining 2 from the upper pillar 215a on the side of the concrete lining 2 among the two upper pillars 215, and passes through the upper ends of the upper pillars 215a and 215b. , supports a first mold forming part 221, which will be described later.

The base of the upper column 215b is provided with a first jack 216 for telescopically supporting a second mold forming part 222 described later, and a connecting jack 41 telescopically connected to the protector 30 described later. Further, the second column extends laterally from the height adjusting portion 212 provided on the column 217 on the side of the concrete lining 2 among the two columns 217, and is connected to the lower end of the third form forming portion 223, which will be described later. 2 jacks 218 are provided.

The formwork section 22 is composed of a first formwork constituent section 221, formwork constituent sections 222 and 223, and a pivot connection section 224 that pivotably connects the formwork constituent sections.
The first formwork forming part 221 is supported by the beams 213 as described above, and is diagonally upward in a half section that is half of the width direction W of the tunnel 1 having a crown-shaped cross section (when constructing the outward path shown in FIG. 1, It is an arc shape corresponding to the inner surface of the upper left diagonally and the inner surface of the upper right diagonally when constructing the return path shown in FIG. 9B).

The second formwork-forming part 222 is pivotably connected to the upper end of the first formwork-forming part 221 via a pivotal connection part 224, and is the top end of the half section of the tunnel 1 having a crown-shaped cross section. It corresponds to the inner surface and has an arc shape with an arc length of about 1/5 of that of the first mold forming part 221 .

In addition, the first jack 216 is connected to the end of the second mold forming part 222 opposite to the end to which the pivotal connection part 224 is connected. As a result, the second mold form forming part 222 is pivoted to the unfolded state with respect to the first form forming part 221 with the first jack 216 extended, and the first jack 216 is contracted and the first form forming part 222 is opened. 221 to the folded state.

Furthermore, as shown by the dashed line in FIG. A plurality of them are provided in L at predetermined intervals. In addition, the second formwork component 222 is configured to be fixed by the anchor bolts 7 provided on the concrete lining 2 .

The third mold forming part 223 is pivotably connected to the lower end of the first mold forming part 221 via a pivot connecting part 224, and is a lateral portion of the half section of the tunnel 1 having a crown-shaped cross section. It corresponds to the inner surface and has an arc shape with an arc length of about 2/3 times that of the first mold forming part 221 .

In addition, the above-described second jack 218 is connected to the lower end portion of the third mold forming portion 223 opposite to the end portion to which the pivotal connection portion 224 is connected. As a result, the third mold form forming part 223 is pivoted to the unfolded state with respect to the first form forming part 221 with the second jack 218 extended, and the second jack 218 is contracted and the first form form forming part 223 is opened. 221 to the folded state.
In addition, the third formwork component 223 is configured to be fixed by the anchor bolts 7 provided on the concrete lining 2 .

By extending the jacks 216 and 218 to open the formwork components 222 and 223, the formwork 22 configured in this way is half the width direction W of the tunnel 1 having a crown shape in cross section. An arc corresponding to the inner surface of the cross section can be formed.

The center 20 configured in this way is formed with a predetermined length in the depth direction L, as shown in FIG. Specifically, the center 20 is formed with a length for one time of pouring concrete using the formwork 22, that is, for one span of construction.
In addition, on both sides of the center 20 in the depth direction L, workbenches 24 having the same height as the stage 214 are provided (not shown in FIG. 1).

The protector 30 has a plurality of gate frames 31, which are composed of beams 32 extending in the width direction W and columns 33 extending downward from both ends of the beams 32, arranged at predetermined intervals in the depth direction L. are connected by connecting beams 34 (FIG. 3) to form a substantially tunnel shape in which a passage space 30X is formed.
Wheels 35 that roll on temporary rails 6 provided on the road surface 5 of the tunnel 1 are provided at the lower ends of the pillars 33 .

A fixed jack 36 is provided on the outside of the beam 32 in the width direction W so as to expand and contract outward in the width direction W, that is, toward the side opposite to the center 20 .
The protector 30 configured in this manner is formed with a length in the depth direction L that is about three times as long as the center 20 so as to extend to both sides in the depth direction L. As shown in FIG.

Further, the center 20 and protector 30 configured in this way are connected in the width direction W by connecting jacks 41 and 42 .
Specifically, the inner end of the beam 213 of the center 20 in the width direction W and the inner end of the beam 32 of the protector 30 in the width direction W are connected by the connecting jack 41 so as to be pivotable in the height direction H. are doing.

Also, the height adjusting portion 212 provided on the inner pillar 217 in the width direction W of the two pillars 217 in the center 20 and the inner pillar 33 in the width direction W of the two pillars 33 in the protector 30 are connected. They are connected by a jack 42 .

Next, a repairing method for the tunnel 1 using the repairing device 10 configured by connecting the center 20 and the protector 30 with the connecting jacks 41 and 42 will be described below.
Before explaining the flow of the repairing method of the tunnel 1, the formwork 22 closes the open end of the placement space 4 formed between the concrete lining 2 (hereinafter referred to as the lug). The formwork 50 will be described with reference to FIG.

As shown in FIG. 4, which is a vertical cross-sectional view in the depth direction L of a state in which the formwork 22 is installed in the placed replacement lining 3, the top formwork 50 forms the placement space 4. It is provided on the front end side of the construction direction in the depth direction L of the formwork portion 22 .

Specifically, as described above, the placement space 4 formed by the arc-shaped formwork 22 corresponding to the concrete lining 2 of the construction-side half-section X (or the traffic-side half-section Y) has a radially outer side of A concrete lining 2 exists, and a replacement lining part 3 that has already been placed exists behind in the construction direction. Therefore, although the casting space 4 is surrounded on the radially outer side, the rear side in the construction direction, and the radially inner side, the front side in the construction direction is open, and is closed by the garnish formwork 50 .

Specifically, the top frame 50 is provided at the front end portion of the form portion 22 in the construction direction, and includes a top wall 51 extending in the radial direction and a top wall fixing portion for fixing the top wall 51 to the form portion 22. 52 and a chamfered portion 53 arranged at a corner formed by the radial outer surface of the mold portion 22 and the top wall 51 .

By fixing the top wall 51 configured in this way to the formwork 22 by the top wall fixing part 52, all of the radial outer side, the rear side in the construction direction, the radial inner side, and the front side in the construction direction are enclosed. It is possible to form a further placing space 4.

In the repairing method of the tunnel 1 using the repairing device 10, the inner surface of the concrete lining 2 in the tunnel 1 having a crown-shaped cross section shown in FIG. In this construction method, the lining part 3 is re-hit and repaired.

In the repairing method of the tunnel 1 using the repairing device 10, while the passing vehicle Z is allowed to pass through the passing side half section Y (or the construction side half section X) which is the half section in the width direction W of the tunnel 1, the construction side In this construction method, half section X (or half section Y on the traffic side) is used. In the following detailed description, it is assumed that the half-section of the forward route is constructed first, and then the return route is constructed, but the return route may be constructed first.

Specifically, first, the repair device 10 is assembled outside the tunnel 1 (step s1), and carried into the tunnel pit 1X inside the tunnel 1 (step s2).
Then, as shown in FIG. 7( a ), the forward side half section is defined as the construction side half section X, and a part of the inner surface side of the concrete lining 2 for one span in the construction side half section X is cut to a predetermined thickness. (step s3). The concrete lining 2 is cut from the inner side of the tunnel by a concrete cutting device (not shown). At this time, the concrete lining 2 is cut to a thickness that ensures the predetermined strength of the replaced lining portion 3 .

Then, the repair device 10 assembled outside the tunnel is moved to the construction site inside the tunnel 1X (step s4).
Specifically, as shown in FIG. 7B, a temporary rail 6 is laid on the road surface 5 of the tunnel 1, and the wheels 211 and 35 are rolled on the laid temporary rail 6 to to the construction site. At this time, the formwork part 22 of the center 20 in the repairing device 10 is moved in a folded state.

Specifically, as shown in FIG. 7(b), the jacks 216 and 218 are shortened to pivot the formwork components 222 and 223 with respect to the first formwork component 221, thereby folding the formwork 22. , and the repairing device 10 is moved in this state.

The formwork 22 of the repair device 10 moved to the construction site is deployed and fixed, and the repair device 10 is further fixed (step s5).
Specifically, as shown in FIG. 8(a), the height adjusting portion 212 is extended, and the first formwork forming portion 221 supported by the beams 213 is spaced apart from the concrete lining 2 by a predetermined distance. position. Then, the jacks 216 and 218 are extended to pivot the formwork constituent parts 222 and 223 with respect to the first formwork constituent part 221 so that the formwork part 22 is set in the unfolded state. In this state, the formwork components 222 and 223 are fixed with the anchor bolts 7 provided on the concrete lining 2 .

In this manner, in the unfolded formwork 22, the first formwork-constituting part 221 is arranged at a position spaced apart from the concrete lining 2 by a predetermined distance, and the formwork-constituting parts 222 and 223 are arranged in the concrete lining. It is fixed with an anchor bolt 7 provided in the work 2. Therefore, a placement space 4 that is a space having a predetermined thickness is formed between the formwork 22 and the concrete lining 2 .

Furthermore, the connecting jacks 41 and 42 that connect the protector 30 and the center 20 arranged in the passage-side half section Y, and the fixed jack 36 provided on the protector 30 are extended, and the driving is performed in the driving space 4. The repairing device 10 is fixed so as to resist the placing pressure of ready-mixed concrete.
In this manner, in the repairing device 10 fixed in the tunnel pit 1X, the passing vehicle Z can pass through the passing space 30X of the protector 30 arranged in the passing-side half-section Y.

In addition, the first formwork constituent part 221 is placed at a predetermined position with respect to the concrete lining 2, and the formwork constituent parts 222 and 223 are fixed by the anchor bolts 7 provided in the concrete lining 2 to form the placing space 4. A top formwork 50 is installed on the formwork part 22 forming the (see FIG. 4: step s6).

As described above, ready-mixed concrete is cast into the casting space 4 from the casting port 225 in a state in which the repair device 10 is fixed in the tunnel pit 1X and the formwork 22 in the unfolded state is fixed by the anchor bolts 7. (step s7). As the concrete that is placed in the placement space 4 to form the replacement lining portion 3, concrete having high fluidity and strength, such as fiber-reinforced concrete, is placed.

As described above, when the ready-mixed concrete is placed from the pouring port 225 , the formwork 22 is subjected to the placing pressure of the ready-mixed concrete. The pouring pressure of the ready-mixed concrete also acts on the body portion 21 that supports the formwork 22 through the formwork 22 . However, since the formwork 22 is supported by the main body 21 and supported from the concrete lining 2 by the anchor bolts 7, it is possible to prevent the formwork 22 from being deformed by the pouring pressure of the ready-mixed concrete.

The concrete placed in the placing space 4 is cured until a certain strength is generated and the replacement lining portion 3 is formed (step s8). 22 is demolded (step s9). Specifically, first, the top formwork 50 is removed. Then, the anchor bolts 7 provided on the concrete lining 2 are fixed to the formwork constituent parts 222 and 223, and at least the fixing jacks 36 provided on the protector 30 are shortened to remove the fixation of the repair device 10. .

In addition, the jacks 216 and 218 are shortened to pivot the formwork components 222 and 223 with respect to the first formwork component 221 to fold the formwork 22, and the height adjustment part 212 is shortened. , the mold part 22 is lowered with respect to the replacement lining part 3 .

In this way, steps s3 to s9 constitute one cycle, and when one cycle of construction is completed and there is an unconstructed portion in the repair range on the outward route (step s10: No), the process returns to step s3 and the next construction portion is constructed. do.

When all construction work in the repair range on the outbound route is completed (step s10: Yes), the half-section X on the construction side and the half-section Y on the traffic side are exchanged, and construction on the return route is carried out (step s11: Yes). At this time, as shown in FIG. and the traffic-side half-section Y are interchanged left and right, and the right side in the width direction W becomes the construction-side half-section X, and the left side becomes the traffic-side half-section Y.

Specifically, the repair device 10 is carried out from the tunnel pit 1X, and as shown in FIG. Position the refurbishment device 10 so that it is Then, the steps s3 to s10 described above are repeated, and construction is performed on the repair range on the return trip. When the entire repair range of the return route is constructed (step s11: No), the replacement lining part 3 is formed on the inner surface side of the concrete lining 2, and the tunnel 1 is repaired as shown in FIG. is completed.

In the tunnel repairing method described above, the formwork 22 of the tunnel repairing device 10 is arranged inside the concrete lining 2 of the tunnel 1 in service at a predetermined interval, and the concrete lining 2 and the formwork 22, concrete is placed in the placement space 4 to repair the inner surface of the tunnel 1. Then, of the half sections in the width direction W of the tunnel 1, the formwork 22 formed in an arc shape corresponding to the half section of the concrete lining 2 with respect to the construction side half section X (or the traffic side half section Y). In addition, a protector 30 is arranged on the traffic-side half-section Y (or construction-side half-section X) to allow the passing vehicle Z to pass through the traffic space 30X.

Further, the repairing device 10 described above is a tunnel device for repairing the inner surface of the tunnel 1 by placing concrete on the inner surface side of the concrete lining 2 of the tunnel 1 in service. Then, the formwork part arranged in the construction side half section X (or the traffic side half section Y) of the half section in the width direction W of the tunnel 1 and formed in an arc shape corresponding to the concrete lining 2 of the half section 22, and a protector 30 arranged on the traffic-side half-section Y (or construction-side half-section X) and allowing the traffic vehicle Z to pass through the traffic space 30X. Therefore, even if the tunnel 1 is in service, construction work can be performed while the passing vehicle Z such as a vehicle is allowed to pass safely.

More specifically, the formwork 22, which is placed on the inner side of the concrete lining 2 of the tunnel 1 in service at a predetermined interval, is located in the construction side half section X (or the passage It is formed in an arc shape corresponding to the side half section Y). In addition, a protector 30 is arranged on the traffic-side half-section Y (or the construction-side half-section X) so that the traffic vehicle Z can pass through the traffic space 30X.

Therefore, it is possible to construct the tunnel 1 with the construction side half section X (or the traffic side half section Y), and the passing vehicle Z can pass through the traffic side half section Y (or the construction side half section X). In addition, since the passing vehicle Z passing through the passage-side half-section Y (or the construction-side half-section X) passes through the passage space 30X of the protector 30, the construction performed in the construction-side half-section X (or the passage-side half-section Y) It is possible to pass safely while being protected by the protector 30 against.

In addition, since the protector 30 is long in the depth direction L with respect to the formwork 22, the traffic side half section Y (or the construction side half section X) is allowed to pass through more safely while the construction side half section is allowed to pass through. X (or traffic-side half-section Y) can be repaired.

Specifically, the protector 30 is long in the depth direction L with respect to the mold part 22 . Therefore, the passing vehicle Z passing through the passage space 30X of the protector 30 is protected by the protector 30 beyond the construction range of the formwork 22 arranged in the construction-side half-section X (or the passage-side half-section Y). . Therefore, the construction-side half-section X (or the traffic-side half-section Y) can be repaired while allowing the traffic Z to pass through the traffic-side half-section Y (or the construction-side half-section X) more safely.

Further, the protector 30 is provided with wheels 35 that can travel in the depth direction L, supports the formwork 22 , and has a body portion 21 that can travel in the depth direction L. In addition, since the protector 30 and the body portion 21 are connected in the width direction W, the formwork portion 22 is moved in the depth direction L along with the construction in the construction side half section X (or the passage side half section Y). 30 can be moved and modified.

In addition, since the fixed jacks 36 provided in the protector 30 resist the pressure acting on the formwork 22 from the concrete to be placed, the formwork 22 is moved by the concrete placing pressure via the protector 30. can be prevented.

In addition, since the formwork 22 is supported by the anchor bolts 7 from the concrete lining 2 , the pressure acting on the formwork 22 from the concrete to be poured can be resisted via the anchor bolts 7 . Therefore, it is possible to prevent the formwork 22 from moving due to the concrete placing pressure.

In addition, the formwork part 22 formed in an arc shape includes a first formwork-forming part 221, a second formwork-forming part 222, a third formwork-forming part 223, and a pivotal connection for pivoting the formwork-forming parts. 224 and configured to be foldable. Therefore, the mold part 22 can be folded to be compact, and the repairing device 10 can be easily moved.

More specifically, the formwork part 22 is pivotable with respect to the first formwork-constituting part 221 by a first formwork-constituting part 221 supported so as to be movable in the height direction H, and a pivot connection part 224 . It is composed of a second formwork forming part 222 and a third formwork forming part 223 which are connected to each other.

In addition, since jacks 216 and 218 are provided for moving the formwork forming portions 222 and 223 of the formwork portion 22 to predetermined pivotal positions with respect to the first formwork forming portion 221, it is configured to be foldable. The mold part 22 can be reliably formed into a desired shape as a mold.

Also, the formwork components 222 and 223 , which are pivotably connected to the first formwork component 221 supported movably in the height direction H, by the jacks 216 and 218 are connected to each other by the pivotal connection 224 . Move to a predetermined pivot position. Therefore, the formwork part 22 configured to be foldable can be reliably formed into a desired shape as a formwork. Furthermore, the formwork 22 can be arranged at a desired position with respect to the concrete lining 2 .

In addition, the formwork constituent parts 222 and 223 are folded with respect to the first formwork constituent part 221 by the pivotal connecting part 224, and the formwork part 22 and the protector 30 are moved in the tunnel pit 1X in an efficient manner. and can be constructed safely.

In correspondence with the configuration of the present invention and the above-described embodiments, the repair device of the present invention corresponds to the repair device 10,
and so on,
The formwork part corresponds to the formwork part 22,
Tunnel corresponds to Tunnel 1,
The lining part corresponds to concrete lining 2,
The repair material corresponds to concrete,
The width direction corresponds to the width direction W,
One half-section corresponds to the construction-side half-section X (or the traffic-side half-section Y),
The other half-section corresponds to the traffic-side half-section Y (or construction-side half-section X),
The passing object corresponds to the passing vehicle Z,
The interior corresponds to the passage space 30X,
The protective part corresponds to the protector 30,
The tunnel extension direction corresponds to the depth direction L,
The running part corresponds to the wheel 35,
The carriage part corresponds to the main body part 21,
The opposing part corresponds to the fixed jack 36,
The support part corresponds to the anchor bolt 7,
The formwork constituent parts correspond to the first formwork constituent part 221 and the formwork constituent parts 222 and 223,
The pivot corresponds to the pivot connection 224,
The vertical direction corresponds to the height direction H,
The formwork-constituting main part corresponds to the first formwork-constituting part 221,
The formwork-constituting secondary parts correspond to the formwork-constituting parts 222 and 223,
The moving part corresponds to the jacks 216, 218,
The inside of the tunnel pit corresponds to the inside of the tunnel 1X, but the present invention is not limited only to the configurations of the above-described embodiments, and many embodiments can be obtained.

For example, in the above description, after cutting a predetermined thickness on the inner surface side of the concrete lining 2, concrete is cast and replaced for repair. You can refurbish it by adding more shots.

Further, the tunnel 1 may have a cross-sectional shape having a curved inner surface such as a crown shape or a horseshoe shape.

In the above description, high-fluidity and high-strength concrete was cast as the repair material, but mortar such as non-shrinking mortar with high fluidity, resin, etc., which satisfy the required performance such as strength may be used.

Although the anchor bolts 7 are installed in the concrete lining 2, other configurations such as set anchors and cut anchors may be used as long as the formwork 22 can be supported against the pull-out force.

1 Tunnel 1X Tunnel pit 2 Concrete lining 7 Anchor bolt 10 Repair device 21 Main body 22 Formwork 30 Protector 30X Traffic space 35 Wheel 36 Fixed jack 216 First jack 218 2nd jack 221... 1st frame constituent part 222... 2nd form form constituent part 223... 3rd form form constituent part 224... Pivoting connection part H... Height direction L... Depth direction W... Width direction X... Construction side Half-section Y: Half-section on side to be constructed Z: Passing vehicle

Claims (12)

Arranging the formwork of the tunnel repair equipment on the inner side of the lining of the tunnel in service at a predetermined interval,
A tunnel repairing method for repairing the inner surface of a tunnel by placing a repairing material between the lining and the formwork,
Arranging the formwork part formed in an arc shape corresponding to the lining part of the half-section on one of the half-sections in the width direction of the tunnel,
On the other half section, a protective section is placed to allow the passage of objects to pass through ,
The protective portion is provided with a traveling portion capable of traveling in the direction of extension of the tunnel,
A carriage that supports the formwork and can travel in the direction of extension of the tunnel is provided,
The protective portion and the carriage portion are connected in the width direction
Tunnel repair method. 2. The tunnel repairing method according to claim 1, wherein the protection section is longer than the formwork section in the tunnel extension direction. The counter part provided in the protection part resists the pressure acting on the form part from the repair material to be placed.
The tunnel repairing method according to claim 1 or 2 . 4. The tunnel repairing method according to any one of claims 1 to 3 , wherein the formwork is supported by support portions from the lining portion. 5. Among any of claims 1 to 4 , wherein the arc-shaped formwork section is composed of a plurality of formwork-constituting parts and a pivoting part for pivoting the formwork-constituting parts, and is configured to be foldable. The tunnel repair method according to any one of the above. The formwork constituent part is
a formwork-constituting main part supported so as to be vertically movable;
a formwork component slave part pivotably connected to the formwork component main part by the pivot part;
6. A tunnel repairing method according to claim 5 , further comprising a moving part for moving the formwork subordinate part to a predetermined pivot position with respect to the formwork main part. 7. The tunnel repairing method according to claim 6 , wherein the secondary formwork part is folded with respect to the main formwork part by the pivoting part, and the formwork part is moved in the tunnel shaft together with the protective part. A tunnel repair device for repairing the inner surface of a tunnel by placing a repair material on the inner surface of the lining of a tunnel in service,
a formwork part arranged in one of the half-sections of the tunnel in the width direction and formed in an arc shape corresponding to the lining part of the half-section;
It is arranged in the other half cross section and consists of a protective part that allows the passage to pass through the inside ,
The protective portion is provided with a traveling portion capable of traveling in the direction of extension of the tunnel,
A carriage that supports the formwork and can travel in the direction of extension of the tunnel is provided,
The protective portion and the carriage portion are connected in the width direction
refurbishment equipment. 9. A refurbishment device according to claim 8 , wherein said protection section is longer than said formwork section in the direction of extension of the tunnel. 10. The repairing device according to claim 8 or 9 , wherein the protection part is provided with a countering part that resists the pressure acting on the form part from the repairing material to be placed. 11. Any one of claims 8 to 10 , wherein said formwork part formed in an arc shape is composed of a plurality of formwork constituent parts and a pivoting part for pivoting said formwork constituent parts, and is foldable. refurbishment device according to The formwork constituent part is
a formwork-constituting main part supported so as to be vertically movable;
a formwork component slave part pivotably connected to the formwork component main part by the pivot part;
12. Refurbishment device according to claim 11 , further comprising a moving part for moving the slave formwork part to a predetermined pivot position relative to the main formwork part.

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