JP2012255312A - Mounting structure for tunnel interior panel and mounting method of tunnel interior panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mounting structure for a tunnel interior panel in which concrete is prevented from being exfoliated from a concrete structure constituting a tunnel without requiring much costs and man-hours.SOLUTION: A mounting structure for a tunnel interior panel is provided for a concrete structure 1a constituting a tunnel and comprises a concrete anchor 34 which is fixed in a deep part of the concrete structure 1a. A tunnel interior panel 10 is mounted to the concrete structure 1a using the fixed concrete anchor 34. Furthermore, the deep part of the concrete structure is a position which is at least deeper than an outer surface s1 of a steel column 3a inside the concrete structure 1a, while defining a top surface of the concrete structure as a criterion.

Description

  TECHNICAL FIELD The present invention relates to a tunnel interior panel mounting structure and a tunnel interior panel mounting method, for example, a tunnel interior panel mounting structure and a tunnel interior panel mounting structure for preventing concrete from peeling off from a side wall portion of a tunnel observer passage. Regarding the method.

  Conventionally, as a method of repairing the inner surface of the tunnel, it has been proposed to install a panel on the inner surface of the tunnel.

  For example, Patent Document 1 includes a protection panel having a flange around one side wall of a tunnel structure (tunnel inner surface) and the other side wall, with a peripheral rib formed on the protection panel facing each other. In addition, the peripheral ribs are fixed to form a panel integrated body, and the axial force applied to the panel is received by the peripheral ribs against the external force from the tunnel structure side, and transmitted and dispersed throughout the panel integrated body. A structure protection method is disclosed.

In Patent Document 2, the tunnel inner surface is covered with a lining plate (a lining plate made of a precast concrete top panel, side wall panels on both sides thereof, and a bottom plate panel), and the tunnel inner surface and the lining plate are A tunnel repair method for filling a backfilling material between the two is disclosed.
In the tunnel repairing method, the side wall panels are connected to both sides of the top end panel through hinges so as to be swingable in the tunnel radial direction to form arched panels, and the arched panels are closed. Carry in the tunnel in the state. Thereafter, the closed arch-shaped panel is opened, and the joining end surfaces of the top end panel and the side wall panel are joined to each other without a step through a step difference prevention mechanism provided between the joining end surfaces, and the arched panel is tunneled. It presses against the installed arch-shaped panel adjacent to an axial direction, and it joins without the level | step difference through the ring-ring difference prevention mechanism which provided the joining end surfaces in the joining end surface. Further, the bottom plate panel disposed between the lower portions of the side wall panels is pressed against the bottom plate panel adjacent in the tunnel axis direction, and the joining end surfaces are joined to each other without a step through a ring gap prevention mechanism provided on the joining end surface. Has been made.

Japanese Patent Laid-Open No. 2005-23656 JP 2008-115667 A

  By the way, concrete structures such as tunnels have a problem that when the surface layer portion deteriorates, the concrete of the surface layer portion falls off or explodes from the cover portion due to corrosion of the reinforcing bars (reinforcing bars inside the concrete structure). is doing. In addition, when a tunnel interior panel is fixed to a concrete structure, the tunnel interior panel drops off when the surface layer portion deteriorates or explodes from the cover portion. It was expensive and time consuming.

  Further, as shown in FIG. 12, the tunnel supervisor passage (monitor passage) 1 in which the handrail support (steel pipe) 3a provided in the tunnel is embedded is not only subject to the above problem but also the corrosion of the support 3a. Therefore, the crack (concrete crack) 2 is likely to occur (see FIG. 12B). In addition, the support | pillar 3a inserts the lower end side into the hole provided in the supervisor passage 1 made of concrete, and fills the mortar 5 in the hole portion, so that the side wall portion 1a of the supervisor passage 1 is filled. Standing up.

And as shown in FIG.12 (b), (c), the crack 2 which generate | occur | produces in the outer surface part vicinity of the support | pillar 3a advances, and concrete is taken from the part (external surface part of the support | pillar 3a) in which the support | pillar 3a was embed | buried. May come off. For this reason, in the supervisor passage 1 in which the column 3a is embedded, there is a greater possibility that the concrete will be peeled off as compared with other parts of the tunnel (for example, tunnel lining). In particular, in cold regions, the antifreezing material (salt) is spread on the road and the supervisor passage 1 so that the antifreezing material (salt) enters from the periphery of the support 3a, and the support 3a is likely to corrode (that is, , Crack 2 is likely to occur).
In addition, when the interior panel 20 is attached to the side wall 1a, when the crack 2 is generated, the tile of the interior panel 20 that cannot follow the crack 2 is peeled off, and then the crack 2 proceeds. In addition, there is a phenomenon in which the concrete is peeled off together with the interior panel 20 (see FIGS. 13A to 13D).

  The techniques described in Patent Document 1 and Patent Document 2 are techniques for repairing the inner surface of the tunnel when the inner surface of the tunnel deteriorates, and do not prevent the concrete from peeling off from the concrete structure. Absent. Moreover, since the technique of patent document 1 and patent document 2 employ | adopts the method of installing a panel in the whole inner peripheral surface of a tunnel, it has the subject that the expense and effort become large. Yes.

  SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and a tunnel interior panel mounting structure and a mounting method for preventing concrete from peeling off from a concrete structure constituting a tunnel without taking much cost and labor. The purpose is to provide.

  The present invention made to solve the above-mentioned problems is a structure for mounting a tunnel interior panel to a concrete structure constituting a tunnel, comprising a concrete anchor fixed in a deep part of the concrete structure, and the tunnel interior panel Is attached to the surface layer portion of the concrete structure using the fixed concrete anchor, and the deep portion of the concrete structure is at least the concrete structure based on the surface layer portion of the concrete structure. It is an outer surface portion of a metal structure installed inside an object, and is deeper than an outer surface portion arranged to face the surface layer portion.

As described above, in the present invention, cracks in a concrete structure are caused (becomes a crack generation line), and metal structures (for example, steel columns and reinforcing bars) installed inside the concrete structure are used. A concrete anchor is fixed at a position deeper than the outer surface, and the tunnel interior panel is attached using the concrete anchor.
Therefore, according to the present invention, cracks occur in the vicinity of the outer surface portion of the metal structure installed inside the concrete structure (see FIGS. 11 and 12), thereby deteriorating the surface layer portion of the concrete structure. Even in this case, the tunnel interior panel can be held by the pulling resistance force of the concrete anchor fixed in the deep part of the concrete structure.

In addition, according to the present invention, as described above, even if the surface layer portion of the concrete structure deteriorates, the tunnel interior panel is retained, so even if cracks or cracks occur in the concrete due to the progress of the deterioration, Concrete pull-out is prevented by the pulling resistance of the concrete anchor and the tunnel interior panel.
Further, the present invention is configured to attach the tunnel interior panel by a relatively simple operation of fixing the concrete anchor in the deep part of the concrete structure. In addition, there is no great expense and effort.

  Further, the present invention is a structure for attaching a tunnel interior panel to a concrete structure constituting a tunnel, wherein an existing tunnel interior plate is attached to a surface layer portion of the concrete structure, and the existing tunnel interior panel A concrete anchor penetrating the plate and fixed in a deep portion of the concrete structure, wherein the tunnel interior panel is overlapped with a front surface of the existing tunnel interior plate using the concrete anchor and attached to the concrete structure The deep part of the concrete structure is at least an outer surface part of a metal structure installed inside the concrete structure with reference to a surface layer part of the concrete structure, and It is characterized by being deeper than the outer surface portion arranged to face the surface layer portion.

  With the above configuration, it is possible to prevent the existing tunnel interior board from falling off by the interior panel attached to the concrete structure. That is, the present invention can also be applied to a tunnel already provided with a tunnel interior plate, and in addition to preventing the concrete of the tunnel from falling off, can further effectively prevent the existing tunnel interior plate from falling off.

In addition, a rod-shaped coupling metal is connected to one end of the concrete anchor, the coupling metal is inserted together with the concrete anchor into a drilled hole formed in the concrete structure, and the tunnel interior panel is It is attached to the concrete structure by being fixed to a connecting bracket connected to a fixed concrete anchor, and the outer diameter of the connecting bracket is smaller than the diameter of the drilling hole. It is desirable.
With the above configuration, cracks generated in the concrete structure and loads due to cracks are not transmitted to the concrete anchor (the frictional force is not transmitted to the concrete anchor). Thereby, the extraction force with respect to a concrete anchor can be reduced.

  The concrete anchor is a wedge-type anchor bolt having a taper bolt having a thread portion formed on one side and a taper portion formed on the other side, and a wedge composed of an expanded piece wound around the taper bolt. The nut that is screwed into the threaded portion is tightened so that the wedge is opened and fixed in the deep part of the concrete structure, and the tunnel interior panel is fixed to the screw of the anchored concrete anchor. It is desirable to be fixed to the concrete anchor by a nut that is screwed into the part.

Moreover, it is desirable that an elastic material is disposed between the tunnel interior panel and the surface layer portion of the concrete structure.
With the above configuration, even when a crack occurs in the concrete structure, local extrusion can be absorbed by the elastic material, and the pulling force of the concrete anchor fixed in the deep portion can be reduced.

The tunnel interior panel preferably has a cross attached to a surface facing the concrete structure.
According to the above configuration, the toughness of the tunnel interior panel can be increased, and as a result, the anti-peeling property of the tunnel interior panel can be improved.

  Further, the present invention is a structure for attaching a tunnel interior panel to a side wall portion of a tunnel supervisor passage formed of concrete, and the tunnel supervisor passage is in an axial direction of the tunnel on one end side of a roadway in the tunnel. A side wall portion erected along the side wall, a passage portion extending from the upper end of the side wall portion to the tunnel lining on one end side of the tunnel, and a steel column embedded in the upper end of the side wall portion. A concrete anchor fixed to the side wall, and a rod-shaped coupling metal connected to one end of the concrete anchor, and the tunnel interior panel is fixed to the coupling metal so that the side wall The concrete anchor is deeper than the outer surface portion of the embedded support column with respect to the surface layer portion of the one side surface of the side wall portion. It is characterized in that it is fixed in location.

  With the above configuration, it is possible to effectively prevent the stripping of the concrete pieces in the supervisor passage (the supervisor passage where cracks are generated and the concrete pieces are easily peeled off) in which the columns as shown in FIG. 12 are embedded. it can.

  The present invention is also a method for attaching a tunnel interior panel to a concrete structure constituting a tunnel, the step of fixing a concrete anchor in a deep part of the concrete structure, and the concrete using the fixed concrete anchor. Attaching the tunnel interior panel to a surface layer portion of the structure, and the deep portion of the concrete structure is installed at least inside the concrete structure with reference to the surface layer portion of the concrete structure. It is the outer surface part of the metal structure which is, and it is the position deeper than the outer surface part arrange | positioned facing this surface layer part, It is characterized by the above-mentioned.

  ADVANTAGE OF THE INVENTION According to this invention, the installation structure and attachment method of the tunnel interior panel which prevent the peeling of the concrete from the concrete structure which comprises a tunnel can be provided without enormous expense and effort.

It is the schematic diagram which showed an example of the tunnel used as the installation object of the mounting structure of the tunnel interior panel of embodiment of this invention. It is a figure for demonstrating the attachment structure of the tunnel interior panel of embodiment of this invention, (a) is the schematic diagram which showed the cross section of the attachment structure of a tunnel interior panel, (b) is the attachment of a tunnel interior panel It is the schematic diagram which looked at the structure from the front. It is sectional drawing of the principal part of the attachment structure of the tunnel interior panel of embodiment of this invention. It is the schematic diagram which looked at the tunnel interior panel and mounting bracket which comprise the attachment structure of the tunnel interior panel of embodiment of this invention from the front. BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic diagram of the mounting bracket which comprises the mounting structure of the tunnel interior panel of embodiment of this invention, (a) is the schematic diagram which showed the example in which a spacer bolt is connected to a concrete anchor, (b) is concrete. It is the schematic diagram which showed the example by which a long nut is connected to an anchor via all the screw bolts. It is sectional drawing of the attachment structure of the tunnel interior panel of embodiment of this invention, and has shown the attachment structure of the tunnel interior panel in the state which the concrete crack generate | occur | produced. It is the schematic diagram which showed the attachment procedure of the tunnel interior panel of embodiment of this invention. It is the schematic diagram which showed the attachment procedure of the tunnel interior panel of embodiment of this invention. It is the schematic diagram which showed the modification of the tunnel interior panel of embodiment of this invention. It is the schematic diagram which showed the modification of the tunnel interior panel of embodiment of this invention. It is a schematic diagram for demonstrating the modification of embodiment of this invention. It is a schematic diagram for demonstrating the phenomenon by which a concrete piece peels from the side wall part of the tunnel supervisor passage by which the support | pillar for handrail was embed | buried by the prior art. Schematic diagram for explaining a phenomenon in which an interior panel and a concrete piece are peeled off in a side wall portion of a tunnel supervisor passage in which a handrail support column is embedded according to the prior art and the side wall portion to which the interior panel is attached. It is.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the present embodiment, the same components as those shown in FIGS. 12 and 13 described above will be described with the same reference numerals.

  First, the tunnel interior panel mounting structure of the present embodiment will be described with reference to FIGS. FIG. 1 is a schematic diagram illustrating an example of a tunnel to be installed in the present embodiment. FIG. 2 is a schematic diagram for explaining the mounting structure of the tunnel interior panel according to the present embodiment. Moreover, FIG. 3 is sectional drawing of the principal part of the attachment structure of the tunnel interior panel of this embodiment. FIG. 4 is a schematic view of the tunnel interior panel and the mounting bracket constituting the tunnel interior panel mounting structure of the present embodiment as viewed from the front. FIG. 5 is a schematic view of a mounting bracket constituting the tunnel interior panel mounting structure of the present embodiment. FIG. 6 is a cross-sectional view of the tunnel interior panel mounting structure of the present embodiment, showing the tunnel interior panel mounting structure in a state where a concrete crack has occurred.

  The tunnel interior panel mounting structure of the present embodiment is such that a concrete anchor 34 is fixed in the deep part of the side wall 1a of a tunnel supervisor passage (monitor supervisor passage) 1 provided in the tunnel W, and the concrete anchor 34 is used. By attaching a tunnel interior panel (hereinafter simply referred to as “interior panel”) 10 to the front surface of an existing tunnel interior panel (hereinafter simply referred to as “interior panel”) 20 attached to the side wall portion 1a, The concrete (and existing interior panel 20) of the part 1a is prevented from peeling off. In addition, the deep part of the side wall part 1a is mentioned later.

  In addition, a supervisor passage (concrete structure) 1 to be installed in the present embodiment is erected along the axial direction of the tunnel W on one end side of the roadway 9 in the tunnel W, for example, as shown in FIG. And a passage portion 1b (passage portion 1b substantially parallel to the roadway 9) extending from the upper end of the side wall portion 1a to the tunnel covering 8 on one end side of the tunnel W. ing. In addition, a plurality of columns (steel pipes) 3a are embedded at a predetermined interval at the upper end of the side wall 1a (see FIG. 2B). In addition, the support | pillar 3a inserts the lower end side into the hole provided in the upper end of the side wall part 1a of the monitoring person channel | path 1 formed with concrete, and fills the said hole part with mortar etc., and it is the monitoring person channel | path. 1 from the upper end of the side wall 1a. Further, a handrail bar (steel pipe) 3b is installed between the upper ends of the adjacent support columns 3a, thereby forming the handrail 3.

  Moreover, although this embodiment demonstrates the case where the interior panel 20 is attached to the one side (wall surface by the side of the roadway 9) of the side wall part 1a of the supervisor channel | path 1, this is only an example to the last. The present invention is also applied to the supervisor passage 1 to which the interior panel 20 is not attached. The configuration of the interior panel 20 is not particularly limited, but in the following, tiles 22 made of ceramic or the like are arranged directly and vertically on the side wall 1a through an adhesive layer 21 such as mortar or adhesive. It is assumed that what is worn is used (see FIG. 2A).

  And in this embodiment, as shown in FIG. 2, the tunnel interior panel 10 is attached to the one surface (wall surface on the roadway side) of the side wall 1a to which the interior panel 20 is attached using the mounting bracket 30. ing. Thereby, one surface (surface to which the tile 22 is attached) of the existing interior panel 20 is covered with the interior panel 10.

Here, the interior panel 10 has a factory-molded structure in which a plurality of tiles 12 made of ceramics are arranged side by side and fixed on one side of a flexible flat plate-like substrate 11 having predetermined vertical and horizontal dimensions. Goods are used.
Specifically, as shown in FIGS. 2B and 4, the substrate is exposed on one surface of the interior panel 10 (the surface on which the tile 12 is attached) as an attachment portion for attachment to the side wall portion 1 a. A portion 11a (see FIG. 4) is provided. That is, by providing a notch (chamfered portion) at each corner portion adjacent to each other of the four tiles 12 arranged adjacent to each other vertically and horizontally at a plurality of locations excluding the upper and lower sides of each tile panel 12. A substrate exposed portion 11a is formed. In the example of FIG. 4, the corner portions of four adjacent square tiles 12 are cut obliquely in a direction parallel to the diagonal direction to form notches in the tiles 12. By arranging the notch portions of the tiles at the corner portions adjacent to each other of the tiles 12, a substantially rhombic substrate exposed portion 11a is formed. Moreover, the board | substrate exposed part 11a is provided in the multiple places of the interior panel 10 (the number is appropriate), and the attachment metal fitting 30 is made to install in the board | substrate exposed parts 11a of multiple places.

  3 and 5A, the mounting bracket 30 includes a concrete anchor 34, a bar-shaped spacer bolt (connecting bracket) 33 connected to the rear end portion of the concrete anchor 34, and a spacer bolt 33. A hexagon bolt 31 and a washer 32 that are screwed into the inner peripheral portion of the one end portion. The spacer bolt 33 is inserted into a bolt hole formed at the rear end of the concrete anchor 34 and screwed into the bolt. The hexagonal bolt 31 has a threaded portion inserted into and screwed into a bolt hole formed in the rear end portion of the spacer bolt 33. For example, a concrete anchor 34 of “M8 × 35” type can be used, and a spacer bolt 33 of “φ11 × 110 L (M8 threaded)” type can be used. Further, as the hexagon bolt 31, for example, an “M8 × 40” type can be used.

Further, in the present embodiment, an assembled type such as a mounting bracket 30 ′ shown in FIG. 5B can be used instead of an integrated type like the mounting bracket 30.
The mounting bracket 30 ′ includes a concrete anchor 34, a rod-shaped all screw bolt 36 (connection bracket) connected to the rear end of the concrete anchor 34, and a long nut 35 (connection bracket) connected to the all screw bolt 36. The long nut 35 is composed of a hexagonal bolt 31 and a washer 32 that are screwed into an inner peripheral portion of one end portion of the long nut 35. For example, the “M8 × 35” type can be used for the entire screw bolt 36, and the “φ11 × 110 L (M8 threaded)” type can be used for the long nut 35, for example.

Next, the configuration of the present embodiment will be described in detail.
Specifically, as shown in FIGS. 3 and 4, the interior panel mounting structure of the present embodiment is sandwiched between “existing interior panel 20” and “interior panel 10”, and on one surface. A siding plate 41 to which a packing 42 made of an elastic material such as rubber is attached is provided.

  The lining plate 41 is arranged in a state where the surface on which the packing 42 is not attached is in contact with the interior panel 20. Further, the interior panel 10 is disposed such that the back surface (the surface on which the tile 12 is not fixed) is pressed against the packing 42 attached to the laying plate 41 disposed as described above. . The packing 42 is formed in a disk shape, for example, and a through hole (a through hole through which the mounting bracket 30 is inserted) is formed at the center thereof.

  Moreover, the interior panel mounting structure of the present embodiment penetrates through the “interior panel 20, interior panel 10, mating plate 41, and packing 42” in addition to the above-described mating plate 41 to which the packing 42 is attached and has a side wall. A concrete anchor 34 inserted into the hole 13 formed in the part 1 a, a spacer bolt 33 connected to one end of the concrete anchor 34, a bolt 31 and a washer 32 screwed to the spacer bolt 33 are provided.

  Moreover, the concrete anchor 34 inserted in the hole 13 is fixed in the deep part of the side wall part 1a. Further, like the concrete anchor 34, the spacer bolt 33 passes through the "interior panel 20, interior panel 10, siding plate 41 and packing 42" and is inserted into the hole 13 formed in the side wall 1a. ing. In addition, the spacer bolt 33 has a rear end portion (a lower end portion shown in FIG. 3) that protrudes from a surface layer surface (tile outer surface) s <b> 3 on one surface of the interior panel 20. In addition, the outer diameter of the spacer bolt 33 is smaller than the diameter of the hole 13. For example, when the outer diameter of the spacer bolt 33 is “φ11 mm”, the diameter of the hole 13 is set to “φ12.5 mm”.

  Further, as shown in FIG. 3, the deep portion of the side wall portion 1a to which the concrete anchor 34 is fixed is based on at least the surface layer surface (concrete outer surface) s2 of one side surface (wall surface on the roadway side) of the side wall portion 1a. Thus, it means a position deeper than the outer surface s1 (outer surface s1 disposed to face the surface layer surface s3) of the column 3a embedded in the side wall 1a. In the illustrated example, the rear end portion (lower end portion shown in FIG. 3) of the concrete anchor 34 is disposed at a position deeper than the outer surface s1 of the column 3a. However, the present invention is particularly limited to this. It is not a thing. The concrete anchor 34 may be fixed at a deeper position than the illustrated example.

  More specifically, the depth dimension (length dimension) L1 from the surface layer surface s2 of the side wall part 1a to the deep part is larger than the depth dimension L2 from the surface layer surface s2 of the side wall part 1a to the outer surface s1 of the column 3a. (L1> L2). The outer surface s1 of the embedded support column 3a is, for example, the outer surface of the outer surface of the embedded support column 3a that has the shortest depth dimension to the surface layer surface s2.

  With the above-described configuration, the tunnel interior panel 10 is inserted into the rear end portion of the spacer bolt 33 connected to the concrete anchor 34 fixed to the deep portion of the side wall portion 1a, and the bolt 31 that is screwed together. It is clamped and fixed by spacer bolts 33 and bolts 31 (washers 32 through which threaded portions of bolts are inserted) connected to the anchors 34 and attached to one surface of the side wall 1a.

  Adopting the above configuration is the cause of cracks in the concrete structure (becomes a crack generation line), from a metal structure (steel support 3a, reinforcing bar, etc.) arranged inside the concrete structure This is because, by fixing the concrete anchor 34 at a deep position and attaching the interior panel 10 using the concrete anchor 34, it is possible to effectively prevent the concrete from peeling off from the concrete structure.

Specifically, as shown in FIG. 6, even if a crack 2 occurs near the outer surface s1 of the column 3a embedded in the side wall 1a, the concrete anchor 34 fixed at a position deeper than the outer surface s1 of the column 3a. The interior panel 10 is held by the pulling resistance force (the interior panel 10 is held by the side wall 1a).
Therefore, even if the crack 2 progresses in the concrete of the side wall 1a, for example, the crack occurs in the concrete of the side wall 1a or the existing interior panel 20 is damaged, the interior panel 10 causes the concrete piece (and The existing interior panel 20) is prevented from peeling off.

In the present embodiment, the cushioning material (packing 42 is provided between the tunnel interior panel 10 fixed by the mounting bracket 30 and the surface layer surface (concrete outer surface) s2 of the side wall 1a to which the mounting bracket 30 is fixed. An affixed mat 41) is installed.
Therefore, as shown in FIG. 6, the force due to the generation of the crack 2 can be absorbed by the absorbing function of the packing 42 (the force is absorbed when the packing 42 is crushed), so that the deep portion of the side wall portion 1a can be absorbed. The pulling force of the anchored concrete anchor 34 can be reduced.

  In the present embodiment, the outer diameter of the spacer bolt 33 is formed to be smaller than the diameter of the hole 13. Thereby, the crack 2 generated in the side wall 1a and the load due to the crack are not transmitted to the concrete anchor 34 (the frictional force is not transmitted to the concrete anchor). As a result, the pulling force on the concrete anchor 34 can be reduced.

  Next, the construction procedure of the tunnel interior panel of this embodiment will be described.

First, the construction procedure using the driving rod will be described with reference to FIG.
Specifically, as shown in FIG. 7A, a floor plate 41 with a packing 42 attached is brought into contact with the front surface of an existing interior panel 20, and the interior panel 10 is placed on one surface of the packing 42. The back surface (surface on which the tile 12 is not fixed) is pressed. And the drill 50 is pressed against the board | substrate exposed part 11a of the interior panel 10, and the drilling hole 13 is made into "the interior panel 10, the siding board 41 with which the packing 42 was affixed, the existing interior panel 20, and the side wall part 1a." Drill.

  Next, the spacer bolt 33 is screwed and connected to the rear end portion of the concrete anchor 34. Then, as shown in FIG. 7B, the concrete anchor 34 and the spacer bolt 33 are inserted into the drilled hole 13 from the tip of the concrete anchor 34.

  Next, as shown in FIG. 7C, the driving rod 51 is pressed against the rear end portion of the spacer bolt 33 inserted into the drilling hole 13, and the rear end of the driving rod 51 is hit with a hammer or the like. The concrete anchor 34 is fixed to a position deeper than the outer surface s1 of the column 3a embedded in the side wall 1a (a deep part of the side wall 1a) as viewed from the surface layer surface s2 on one side of the portion 1a.

  Finally, as shown in FIGS. 7D and 7E, a washer 32 is inserted into the bolt hole formed at the rear end of the spacer bolt 33 connected to the concrete anchor 34 fixed to the deep portion of the side wall 1a. Insert and tighten the screw part of the inserted hexagon bolt 31. In the present embodiment, the interior panel 10 is attached to one surface of the side wall portion 1a by attaching the mounting brackets 30 to the plurality of substrate exposed portions 11a provided on the interior panel 10.

Next, the construction procedure by hitting the bolt without using the driving rod will be described with reference to FIG.
First, as shown in FIG. 8A, the drilling hole 13 is drilled with the drill 50 in the same procedure as described above.

  Next, the spacer bolt 33 is screwed and connected to the rear end portion of the concrete anchor 34, and the screw portion of the hexagon bolt 31 with the washer 32 inserted is inserted into the bolt hole formed at the rear end of the spacer bolt 33. Then install. 8 (b), the concrete anchor 34 and the spacer bolt 33 are inserted into the drilled hole 13 from the tip of the concrete anchor 34 (the hexagon bolt 31 is attached to the rear end of the spacer bolt 33). Is).

  Further, as shown in FIG. 8C, the head of the hexagon bolt 31 attached to the rear end portion of the spacer bolt 33 inserted into the drilling hole 13 is hit with a hammer or the like, so that the front surface of the side wall portion 1a is displayed. As viewed from the layer surface s2, the concrete anchor 34 is fixed at a position deeper than the outer surface s1 of the column 3a embedded in the side wall portion 1a (a deep portion of the side wall portion 1a). Then, as shown in FIG. 8D, the hexagon bolt 31 is tightened by the same procedure as described above.

  As described above, according to the present embodiment, the concrete is effectively prevented from peeling off from the side wall portion of the monitoring person passage 1 in which the column 3a is embedded, which is a structure in which the concrete is easily peeled off. I can do it. In addition, this embodiment is particularly effective for the superviser passage 1 on the highway in a cold region where the antifreezing material (salt) is applied and the column 3a is easily corroded.

  Moreover, since this embodiment is comprised so that the interior panel 10 may be attached by the comparatively simple operation | work of fixing the concrete anchor 34 to the deep part of the side wall part 1a of the monitoring person channel | path 1, the patent document mentioned above Unlike the technologies 1 and 2, there is no cost and effort.

  As described above, according to the present embodiment, it is possible to provide a tunnel interior panel mounting structure and a mounting method for preventing the concrete from peeling off from the concrete structure constituting the tunnel, without enormous costs and effort. it can.

  In addition, this invention is not limited to embodiment mentioned above, A various change is possible within the range of the summary.

  For example, the tunnel interior panel mounting structure of the above-described embodiment is provided on the side wall portion 1a of the supervisor passage 1 to which the existing interior panel 20 is mounted, but is not particularly limited thereto. The tunnel interior panel mounting structure may be provided directly on the side wall 1a to which the existing interior panel 20 is not mounted. In this case, the base plate 41 with the packing 42 attached is brought into contact with the side wall 1a, and the back surface of the interior panel 10 (the surface on which the tile 12 is not fixed) is pressed against one surface of the packing 42. Deploy. And the concrete anchor 34 is fixed in the deep part (position similar to FIG. 3) of the side wall part 1a by the procedure similar to the said embodiment. The interior panel 10 is fixed to a spacer bolt (connecting bracket) 33 connected to the fixed concrete anchor 34 by using a hexagon bolt 31 and a washer 32. Thereby, the interior panel 10 is attached to one side (surface layer part) of the side wall part 1a.

  Moreover, the structure of the shock absorbing material (laying board 41 which stuck the packing 42) shown in embodiment mentioned above is only an example to the last. As shown in FIGS. 9A to 9C, the cushioning material may be packings 43, 44, and 45 that are not provided with the laying plate 41 and are configured only by rubber elastic members. The shape is appropriately designed. For example, like the packing 43, it may be formed in a circular shape in plan view, one surface may be formed flat, and an annular convex portion may be formed on the outer peripheral portion of the other surface. Further, like the packing 44, the center portion may have an annular shape, and both surfaces may be formed flat. Moreover, like the packing 45, it forms in plate shape, the through-hole by which an attachment metal fitting is inserted is formed in the center part, and both surfaces may be formed flat.

  Further, as shown in FIG. 10A, the cushioning material may be formed of a siding plate 46 and a packing 47. The packing 47 is formed in a circular shape in a plan view, one surface (the surface affixed to the mating plate 46) is formed flat, and the center of the other surface is convex ( Arc-shaped). Moreover, as shown in FIG.10 (b), the shock absorbing material is formed of the lining board 48 and the packing 49, and you may make it arrange the packing 49 facing the existing interior panel 20 side.

Further, the interior panel 10 may have a cloth (a cloth made of synthetic resin such as vinyl) pasted on the back side (the face on which the tile 12 is not stuck).
With this configuration, the toughness of the interior panel 10 can be increased, and as a result, the resistance to peeling of the interior panel 10 can be improved.

  In the above-described embodiment, the tunnel interior panel 10 is attached by the mounting brackets 30 and 30 ', but is not particularly limited thereto. For example, the mounting bracket may be composed of a long wedge anchor 60 as shown in FIG. In FIG. 11, a configuration different from the above-described embodiment will be described, and the description of the same configuration will be omitted.

  Here, the wedge type anchor 60 has a long rod-like shape in which a male screw part 61a is formed on one side (lower side shown in FIG. 11) and a tapered part 61b is formed on the other side (upper side shown in FIG. 11). A taper bolt 61 and an expanded piece (wedge) 62 wound around the taper bolt 61 are provided. In addition, a washer 63 is inserted into the male screw portion 61a, and a nut 64 is screwed together. When the nut 64 is tightened, the wedge-type anchor 60 has a structure in which the tapered portion 61b is drawn into the wedge 62 and the wedge 62 is opened and pressed against the hole wall to be fixed.

  Specifically, in the modification shown in FIG. 11, the wedge-type anchor 60 penetrates the “interior panel 10, the siding plate 41 and the packing 42, and the interior panel 20” and is formed in the side wall 1 a. Has been inserted. Further, in the wedge type anchor 60, the wedge 62 is fixed in the deep portion of the side wall 1a (the tapered portion 61b is pulled into the wedge 62 by tightening the nut 64, the wedge 62 is opened, and the hole 13 is formed in the hole 13. It is pressed against the wall and settled). Further, in the wedge-type anchor 60, the end portion of the male screw portion 61 a protrudes from the substrate 11 of the interior panel 10. Further, a washer 63 and a nut 64 are inserted into the male thread portion 61a on one side of the wedge type anchor 60 fixed to the deep portion of the side wall portion 1a. In addition, the said deep part is the support | pillar 3a embed | buried under the side wall part 1a on the basis of the surface layer surface (concrete outer surface) s2 of the one side (wall surface on the roadway side) at least like the embodiment mentioned above. The outer surface s1 (the outer surface s1 disposed to face the surface layer s3) is a deeper position.

  And the interior panel 10 is being fixed to the wedge-type anchor 60 by the clamp | tightened nut 64 (Thereby, the interior panel 10 is attached to the one surface of the side wall part 1a). Thus, also in the modification shown in FIG. 11, the same effects as those of the above-described embodiment can be obtained.

Further, in the above-described embodiment, the attachment structure of the interior panel 10 to the concrete structure (supervisor passage 1) in which the column (steel pipe) 3a is embedded is shown, but the present invention is concrete in which the column 3a is not embedded. It is also effective for structures.
In this case, the concrete panel 34 is fixed at least at a position deeper than the cover thickness with respect to the concrete structure in which the column 3 a is not embedded, and the interior panel 10 is attached using the concrete anchor 34. By doing so, the same effect as the above-described embodiment can be obtained.

  Moreover, the concrete anchor 34 shown by embodiment mentioned above is only an example to the last. The shape and type of the concrete anchor 34 are appropriately set.

DESCRIPTION OF SYMBOLS 1 ... Observer passage (concrete structure), 1a ... Side wall part (observer passage), 1b ... Passage part (observer passage), 2 ... Crack, 3 ... Handrail, 3a ... Post (handrail), 3b ... Handrail stick (Handrail) 5 ... mortar, 8 ... tunnel lining, 9 ... roadway, 10 ... tunnel interior panel, 11 ... substrate, 11a ... substrate exposed part, 12 ... tile, 13 ... drilling, 20 ... tunnel interior panel, 21 ... Board, 22 ... Tile, 30 ... Mounting bracket, 30 '... Mounting bracket, 31 ... Hexagon bolt, 32 ... Washer, 33 ... Spacer bolt, 34 ... Concrete anchor, 35 ... Long nut, 36 ... Fully threaded bolt, 41 ... Laying 42, packing, 44 ... packing, 45 ... packing, 46 ... packing plate, 47 ... packing, 48 ... packing plate, 49 ... packing, 50 ... drill, 51 ... driving rod, 6 ... wedge anchor, 61 ... Tepaboruto, 61a ... male screw portion, 61b ... taper portion, 62 ... expansion tabs (wedge), 63 ... washers 64 ... nut

Claims (8)

A tunnel interior panel mounting structure for a concrete structure constituting the tunnel,
A concrete anchor fixed in the deep part of the concrete structure;
The tunnel interior panel is attached to a surface layer portion of the concrete structure using the fixed concrete anchor,
The deep part of the concrete structure is at least an outer surface part of a metal structure installed inside the concrete structure with reference to a surface layer part of the concrete structure, and the surface layer part. A tunnel interior panel mounting structure, characterized in that the position is deeper than the opposing outer surface portions. A tunnel interior panel mounting structure for a concrete structure constituting the tunnel,
An existing tunnel interior board is attached to the surface layer of the concrete structure,
A concrete anchor penetrating the existing tunnel interior plate and fixed in a deep part of the concrete structure;
The tunnel interior panel is attached to the concrete structure overlaid on the front surface of the existing tunnel interior plate using the concrete anchor,
The deep part of the concrete structure is at least an outer surface part of a metal structure installed inside the concrete structure with reference to a surface layer part of the concrete structure, and the surface layer part. A tunnel interior panel mounting structure, characterized in that the position is deeper than the opposing outer surface portions. One end of the concrete anchor is connected to a rod-shaped connecting bracket,
The connection fitting is inserted together with the concrete anchor into a drilling hole drilled in the concrete structure,
The tunnel interior panel is attached to the concrete structure by being fixed to a coupling fitting connected to the fixed concrete anchor,
3. The tunnel interior panel mounting structure according to claim 1, wherein an outer diameter of the connection fitting is smaller than a diameter of the drilling hole. The concrete anchor is a wedge-type anchor bolt having a taper bolt having a threaded portion formed on one side and a tapered portion formed on the other side, and a wedge composed of an expanded piece wound around the taper bolt. The nut that is screwed into the threaded portion is tightened, whereby the wedge is opened and fixed in the deep part of the concrete structure,
The tunnel interior panel according to claim 1 or 2, wherein the tunnel interior panel is fixed to the concrete anchor by a nut that is screwed into the threaded portion of the fixed concrete anchor. Mounting structure.   The tunnel interior panel mounting structure according to any one of claims 1 to 4, wherein an elastic material is disposed between the tunnel interior panel and a surface layer portion of the concrete structure. 6. The tunnel interior panel has a cloth pasted on a surface facing the concrete structure.
The tunnel interior panel mounting structure according to any one of the above. A tunnel interior panel mounting structure for a side wall of a tunnel observer passage made of concrete,
The tunnel supervisor passage extends from one end of the roadway in the tunnel along the axial direction of the tunnel, and extends from the upper end of the side wall to the tunnel lining on one end of the tunnel. And a steel column embedded in the upper end of the side wall,
A concrete anchor fixed to the side wall,
A rod-shaped coupling metal connected to one end of the concrete anchor;
The tunnel interior panel is attached to one surface of the side wall portion by being fixed to the connection fitting,
2. The tunnel interior panel mounting structure according to claim 1, wherein the concrete anchor is fixed at a position deeper than an outer surface portion of the embedded support column with reference to a surface layer portion on one surface of the side wall portion. A method for attaching a tunnel interior panel to a concrete structure constituting a tunnel,
Fixing a concrete anchor deep in the concrete structure;
Attaching the tunnel interior panel to the surface layer portion of the concrete structure using the fixed concrete anchor,
The deep part of the concrete structure is at least an outer surface part of a metal structure installed inside the concrete structure with reference to a surface layer part of the concrete structure, and the surface layer part. A tunnel interior panel mounting method, wherein the tunnel interior panel is located deeper than the opposing outer surface portions.

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