JP2018096078A - Method for attaching sheet in stretched condition to tunnel inner wall surface and set of sheet and attaching members for used therein - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method of attaching a sheet in the stretched condition to a tunnel inner wall surface, that can reduce accidents caused by falling objects from the tunnel inner wall surface, and that is excellent in maintainability, and that enabling internal finishing work even on the tunnel inner wall surface with leak points, and to provide a set of the sheet and the attaching members for used therein.SOLUTION: According to the present invention, a method comprises a step of attaching a sheet with light-reflectivity and waterproof performance in the stretched condition to an inner wall surface of a tunnel skeleton with a gap by attachment members on purpose to enhance light-reflectivity of the inner wall surface of the tunnel skeleton and make it possible to do water conveyance of the leakage water from the inner wall surface of the tunnel skeleton.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a sheet tensioning method for a tunnel inner wall surface and a sheet tensioning set.

When interior decoration was applied to the inner wall surface of the tunnel, interior work was done by the panel method of attaching the panel to the inner wall surface with an anchor or the tile direct bonding method of attaching the tile to the inner wall surface with an adhesive, but water leakage occurred. Or the panel floating construction method which provided the water conduit in the possible tunnel is becoming mainstream (for example, refer patent document 1).
In this panel floating method, a required number of tile panels, in which tiles are pasted with an adhesive, are prepared in advance on a base material that has been cut to a predetermined size according to the inner wall surface of the tunnel, and the tile panel is attached to the inner wall surface via a support fitting. Is done.

  Ceramic tiles used for tile panels have high whiteness and reflect the light of car headlights, making the wall surface easier to see, less dirty, easier to clean, and better maintainability. In addition, the panel floating method can also be used for interior decoration on the inner wall of the tunnel where water leakage exists.

JP 2012-67474 A

  Recently, accidents caused by falling objects in tunnels caused by earthquakes, aging, etc. have been pointed out, and panel floating methods such as Patent Document 1 have a risk of panel falling, The interior is repainted.

  However, painting is easy to get dirty, and since the painted surface is soft, it cannot be washed with water by rubbing with a brush or washed with high-pressure washing water, requiring frequent repainting, costly, and leakage of water There is a problem that the inner wall surface of the tunnel cannot be painted unless it is waterproofed, and that it cannot be painted in winter when condensation occurs. Moreover, although it is said that what has the effect which reduces the reverberation sound in a tunnel is preferable for a tunnel interior material, such an effect cannot be anticipated by coating.

  The present invention has been made in view of these problems, and can reduce accidents caused by falling objects from the inner wall surface of the tunnel, has excellent maintainability, and can be used for interior work even on the inner wall surface of a tunnel having a water leakage point. An object of the present invention is to provide a sheet tension method and a sheet tension set on an inner wall surface.

Thus, according to the present invention, the light-reflective and waterproof interior sheet is fixed to the inner wall surface of the tunnel housing so as to increase the light reflectivity of the inner wall surface and to conduct water leakage from the inner wall surface. There is provided a method of attaching a sheet to a tunnel inner wall surface that is attached with a gap between the member and the inner wall surface.
According to another aspect of the present invention, a plurality of fixing members fixed to the inner wall surface of the tunnel, and the inner wall so as to increase the light reflectance of the inner wall surface and to conduct water leakage from the inner wall surface. There is provided a sheet tension set for an inner wall surface of a tunnel, including a light-reflective and waterproof interior sheet attached to the plurality of fixing members with a gap between the inner wall and the wall surface.

According to the sheet tension method and the sheet tension set on the inner wall surface of the tunnel according to the present invention, the following effects are obtained.
In the case of the <1> tile direct pasting method, there is a risk of tile peeling due to deterioration of the adhesive over time, a decrease in adhesive force due to water leakage from the inner wall surface of the tunnel, deformation of the tunnel housing due to an earthquake, and the like.
Also, in the case of tile panel floating method, there is a risk of tile peeling from the base material due to aging deterioration of the adhesive, aging deterioration of the support bracket, deformation of the tunnel body due to earthquake, risk of tile panel dropping due to wind pressure, etc. There is.
On the other hand, according to the present invention, since the sheet having a significantly reduced weight per unit area compared to the tile or tile panel is attached to the tunnel inner wall surface with a predetermined interval via the fixing member, the sheet falls off. There is almost no influence of water leakage from the inner wall surface of the tunnel, and even if the seat is detached from several fixing members among the plurality of fixing members, or even if several fixing members fall off from the inner wall surface of the tunnel, the remaining fixing members Since the seat is fixed, the risk of the seat falling to the road surface is extremely small. For example, even if the entire upper edge portion of the sheet is detached from the fixing member, if the middle portion of the sheet is fixed, only the upper half of the sheet is rolled and dropped, and the sheet is prevented from dropping onto the road surface. Therefore, according to the present invention, the effect of preventing the occurrence of a vehicle accident associated with a falling object can be significantly improved as compared with the conventional tile direct pasting method and panel floating method.

<2> In the case of the tile direct attachment method, the state of the inner wall surface of the tunnel under the tile can be inferred due to cracks in the tile, the joints between the tiles being soiled by water leakage, etc. The generated fine cracks cannot be confirmed, and it is difficult to detect minor abnormalities at an early stage.
In the case of the panel floating method, it is necessary to remove the tile panel from all the support brackets when inspecting the state of the inner wall surface of the tunnel, which is very troublesome. Moreover, it takes time to reattach the tile panel, which is a heavy object, to the plurality of support fittings after the inspection. Accordingly, the inspection efficiency is lowered, and as a result, it is difficult to detect a minor abnormality at an early stage.
On the other hand, according to the present invention, by removing a part of the sheet from some fixing members, the entire tunnel inner wall surface covered by one sheet is exposed. Detailed inspection up to cracks is possible. Moreover, since the sheet is lightweight, it can be easily performed when it is reattached to the fixing member after inspection. Therefore, the inspection efficiency is increased, and it becomes easier to detect minor abnormalities at an early stage.

<3> In the case of painting, it is easy to get dirty, and since the painted surface is soft, it cannot be washed with water while rubbing with a brush. The inside wall of the tunnel where water leakage has to occur cannot be painted without waterproofing, it cannot be painted in the winter when condensation occurs, the echo sound in the tunnel cannot be reduced, the interior of the tunnel There is a problem that Thunder Keren, which damages the enclosure before painting on the wall surface, is necessary.
On the other hand, according to the present invention, it becomes difficult to become dirty by using a sheet having an antifouling treatment on the surface, it can be washed with water while rubbing with a brush, or washed with high-pressure washing water. It is possible to suppress the decrease in light reflectivity and visibility of the wall surface by dropping the water, and it is not necessary to frequently repaint like painting, it can be maintained and managed at low cost, and it is also waterproof to the inner wall surface of the tunnel where water leakage occurs Advantages are that the sheet can be stretched without being treated, it can be constructed even in winter when condensation occurs, the reverberation sound in the tunnel can be reduced by the sheet, and the Thunder Keren that damages the tunnel body is unnecessary. . In addition, with respect to water leakage, the seat itself also serves as a conduit, so installation work for the conduit is not required.

<4> According to the present invention, it is possible to sufficiently cope with the following items required for the interior of the inner wall surface of the tunnel.
[1] It can be installed and removed in a short period of time without blocking the diagonal line on one side.
[2] The body wall can be easily inspected.
[3] Able to follow changes to the housing.
[4] A water conduit for leakage is provided.
[5] No condensation.
[6] The light reflectance durability is 65% or more.
[7] Ensure visual environment and no variation.
[8] Easy cleaning.
[9] It is a non-combustible material.
[10] The reverberation sound in the tunnel can be reduced.
[11] It is possible to easily print a guidance display or the like.
[12] The construction cost is low.

It is explanatory drawing which has the partially expanded view which shows the inside of the tunnel equipped with in Embodiment 1-1 of the sheet | seat tensioning method to the inner wall surface of a tunnel which concerns on this invention. It is a front view which shows the sheet | seat used for the sheet | seat tensioning method of Embodiment 1-1. (A) in the support plate used for the sheet | seat of Embodiment 1-1 is a front view, (B) is a side view. (A) in the eyelet used for the sheet | seat of Embodiment 1-1 is a rear view, (B) is a side view. (A) in the washer used for the eyelet of FIG. 4 is a rear view, and (B) is a side sectional view. (A) in the eyelet part of the sheet | seat of Embodiment 1-1 is a front view, (B) is a sectional side view. (A) in the fixing member of Embodiment 1-1 is a front view, (B) is a side view, (C) is a side sectional view. (A) is a sectional side view which shows the state before the assembly of the fixing member of Embodiment 1-1, (B) is a sectional side view which shows the state before crimping after an assembly. (A) in the sheet | seat tensioning method of Embodiment 1-1 is a fixed state of an anchor, (B) is sectional drawing explaining the fixed state of a fixing member. (A) in the sheet tension method of Embodiment 1-1 is sectional drawing explaining the attachment state of a sheet | seat, (B) is a fixed state. (A) in the sheet | seat tensioning method of Embodiment 1-1 is the front view explaining the attachment state of a sheet | seat, (B) is a fixed state. It is a rotary knob of the fixing member used with the sheet | seat tensioning method of Embodiment 1-2, (A) is a rear view, (B) is a side view, (C) is a bottom view. It is eyelets used with the sheet | seat tensioning method of Embodiment 1-2, (A) is a front view, (B) is a side view, (C) is a top view. (A) in the sheet | seat tensioning method of Embodiment 1-2 is the attachment state of a sheet | seat, (B) is a front view explaining a fixed state. It is a side view explaining the fixed state of the sheet in the sheet tension method of Embodiment 1-2. (A) in the eyelet part of the sheet | seat of Embodiment 2 is a front view, (B) is a sectional side view. (A) in the sheet tension method of Embodiment 2 is a state just before attachment of a sheet | seat, (B) is a sectional side view explaining a fixed state. FIG. 6A is a main part front view, FIG. 5B is a main part side view, and FIG. 10C is a main part rear view. It is a fixing member used with the sheet | seat tensioning method of Embodiment 3, Comprising: (A) is a front view, (B) is a side view. (A) in the sheet tension method of Embodiment 3 is a state immediately before attachment of a sheet | seat, (B) is an attachment state, (C) is a sectional side view explaining a fixed state. It is a front view which shows the sheet | seat used with the sheet | seat tensioning method of Embodiment 4-1. 21A is a front view of the main part, FIG. 21B is a side view of the main part, and FIG. 21C is a rear view of the main part. It is a sectional side view explaining the state just before attachment of the sheet | seat in the sheet | seat tensioning method of Embodiment 4-1. It is the plane sectional view seen from the upper part explaining the fixed state of the sheet in the sheet tension method of Embodiment 4-1. It is explanatory drawing which shows the inside of the tunnel equipped with the seat tension method of Embodiment 6. FIG.

The method of sheeting on the inner wall surface of the tunnel according to the present invention provides light reflectivity and waterproofing to the inner wall surface of the tunnel housing so as to increase the light reflectivity of the inner wall surface and to conduct water leakage from the inner wall surface. The interior sheet is attached to the inner wall surface with a fixing member with a gap.
The sheeting method of the present invention may be configured as follows, or may be combined as appropriate.

(1) The gap may have a width of 1 to 15 mm.
According to this configuration, the interior sheet is extremely light and thin compared to the weight of the conventional tile panel, and therefore can be attached while maintaining the internal space of the tunnel. In addition, by providing a space between the inner wall surface of the tunnel and the interior sheet, water leaking from the inner wall surface of the tunnel can flow between the inner wall surface and the interior sheet along the back surface of the interior sheet, so there is water leakage. It can also be constructed in tunnels.
In addition, since the gap is too narrow when the width of the gap is less than 1 mm, almost the entire back surface of the interior sheet adheres to the inner wall surface of the tunnel due to water leakage, thereby eliminating the air layer between the inner wall surface and the interior sheet, and at low temperatures There is a possibility that the inner wall surface is dewed and the deterioration of the tunnel body is likely to be promoted. Moreover, since the tunnel is not designed in consideration of the protruding dimension of the interior material toward the sidewalk, if the width of the gap exceeds 15 mm, the width of the sidewalk becomes narrow, making it difficult to ensure the safety of pedestrians walking on the sidewalk. The width of the gap is preferably 3 to 7 mm, more preferably 5 mm.

(2) The gap between the upper edge of the interior sheet and the inner wall surface may be set larger than the gap between the lower edge of the interior sheet and the inner wall surface.
The inner wall surface of the tunnel is curved upward, and water drops from the upper part of the inner wall surface may fall vertically onto the sidewalk. It becomes easy and can raise the fall suppression effect on the sidewalk of a water drop.

(3) The fixing member includes a fixing portion that is fixed to the inside of the tunnel housing, and a protruding shaft portion that is connected to the fixing portion so as to protrude from the inner wall surface to the outside.
The interior sheet may be fixed to the protruding shaft portion of the fixing portion.
According to this configuration, the fixing portion of the fixing member can be fixed to the anchor driven into the casing of the tunnel inner wall, and the interior sheet can be attached to the protruding shaft portion. At this time, the interior sheet is significantly lighter than the conventional tile panel and supporting metal fittings such as the angle for attaching it to the inner wall surface of the tunnel, so the weight load applied to the frame can be reduced, and cracks of the frame can be reduced. Promotion can be suppressed.

(4) You may fix the said interior sheet to the said fixing member by inserting the said protrusion shaft part of the said some fixing member in the some attachment hole provided in the said interior sheet.
According to this configuration, the interior sheet can be easily and quickly attached to the fixing member.

(5) A retaining portion that prevents the projecting shaft portion from coming out of the attachment hole of the interior sheet may be provided at a tip portion of the projecting shaft portion of the fixing member.
According to this configuration, the attachment can be completed with only the interior sheet and the fixing member. For example, a fastening part such as a string for connecting the interior sheet and the fixing member becomes unnecessary, which leads to a reduction in the number of parts.

(6) The plurality of mounting holes of the interior sheet are elongated holes that are long in the vertical direction,
A rotary knob in which the retaining portion of the fixing member extends in a direction perpendicular to the axis of the projecting shaft portion and can be inserted through the elongated hole provided in the projecting shaft portion so as to be rotatable around the shaft center. It may be.
According to this configuration, when the protruding shaft portion of the fixing member is inserted into the long hole of the interior sheet and the rotary knob is turned 90 °, the interior sheet is fixed (held), so the work amount is smaller than that of the conventional panel floating method. Since there are few and lightweight interior sheets, it can be installed by a small number of workers. In addition, the interior sheet can be easily removed from the fixing member by turning the rotary knob so that it is parallel to the long hole, so the time required for inspection of the tunnel inner wall surface can be greatly reduced compared to the conventional panel floating method. Can do. Moreover, since inspection can be quickly performed when the interior sheet is reattached to the fixing member after the inspection, the inspection efficiency is greatly improved. Furthermore, when removing the interior sheet from the fixing member, it is not necessary to remove the fixing member from the anchor, so that no load is applied to the tunnel housing and the anchor may loosen with respect to the pilot hole formed in the housing. Absent.

(7) The fixing member may be a bolt member, and the retaining portion may be a head portion of the bolt member.
According to this structure, since a commercially available bolt member can be used as a fixing member, construction cost can be reduced.

(8) A folded portion is formed in at least the upper edge portion of the upper edge portion and the lower edge portion of the rectangular interior sheet, and the plurality of attachment holes are formed in the folded portion, and the inside of the folded portion A belt-shaped support plate may be inserted into the support plate, and a plurality of hole portions communicating with the plurality of attachment holes of the interior sheet may be formed in the support plate.
According to this configuration, since the interior sheet has flexibility, even if the end portion of the interior sheet is fixed by the fixing member, the central portion in the left-right direction is easily loosened, but the central portion is loosened by providing the support plate. Can be suppressed. Further, since the fixing member can be inserted and fixed in the hole portion of the support plate, the attachment of the interior sheet to the fixing member becomes strong, and the attachment hole of the interior sheet is reinforced by the support plate, It is possible to prevent tearing of the interior sheet as a starting point.
In addition, by providing a support plate on the lower edge portion of the interior sheet in the same manner as the upper edge portion, an effect that the entire interior sheet is pulled downward by the weight of the support plate can be obtained.

(9) The retaining portion of the fixing member is a return piece protruding in a direction perpendicular to the axis of the protruding shaft portion,
A folded portion is formed in at least the upper edge portion of the upper edge portion and the lower edge portion of the rectangular interior sheet, the plurality of attachment holes are formed in the folded portion, and a band shape is formed inside the folded portion. A plurality of hole portions communicating with the plurality of mounting holes of the interior sheet are formed in the support plate, and the return of the plurality of fixing members is inserted into the plurality of hole portions of the support plate. It may be hooked through a piece.
According to this configuration, in addition to improving the inspection efficiency, avoiding the loosening of the anchor, preventing loosening of the center portion of the interior sheet and preventing tearing of the interior sheet, the fixing member is not exposed on the interior sheet surface side. The interior walls of the tunnel with seats are aesthetically superior.

(10) A plurality of attachment holes are formed in an intermediate portion in the height direction of the interior sheet, and a support plate having a plurality of holes that can communicate with the attachment holes is attached to the intermediate portion of the interior sheet. May be.
The inside of the tunnel has a substantially semicircular cross-sectional shape, and when the upper and lower edges of the interior sheet are fixed to the inner wall surface of the tunnel, the inner wall surface has an arc between the inner wall surface and the inner wall surface. However, according to the above configuration, the intermediate part of the interior sheet can also be fixed by the fixing member, so that the mounting shape is a “<” shape when viewed from the side, but the interior sheet It can be attached without forming a large gap in the middle part.

(11) The retaining portion of the fixing member is a ring portion,
A folded portion is formed on at least the upper edge portion of the upper edge portion and the lower edge portion of the rectangular interior sheet, the plurality of attachment holes are formed in the folded portion, and the plurality of attachment holes are formed with the plurality of the attachment holes. While inserting the said ring part of a fixing member, a bar or a rope may be inserted in the inside of the said folding | turning part and the said ring part, and the said bar or a rope may be fixed to the said ring part.
According to this configuration, in addition to improving the inspection efficiency, avoiding the loosening of the anchor, preventing loosening of the center portion of the interior sheet and preventing the interior sheet from being broken, the fixing member is not exposed on the interior sheet surface side. The interior walls of the tunnel with seats are aesthetically superior.

(12) While forming the cylinder part which can insert a bar or a rope in the intermediate part of the height direction in the back surface of the said interior sheet, you may form a some attachment hole in the said cylinder part.
According to this structure, there exists an effect similar to said (10).

(13) Eyelets may be attached to the periphery of the plurality of attachment holes of the interior sheet.
According to this configuration, since the peripheral portion of the mounting hole of the interior sheet is reinforced by the eyelet, it is possible to cope with a dimensional shift of the anchor driving and a slight change in the housing. In addition, in an interior sheet used for a tent, the folding portion is usually thread-stitched into a bag shape. However, in the present invention, a burning thread cannot be used for an interior sheet inside a tunnel where incombustibility is required. An eyelet is provided to integrate the support plate and the interior sheet, whereby the folded portion of the interior sheet is firmly fixed to the support plate and the strength is increased.

(14) The support plate may be bent along the inner wall surface of the curved portion of the tunnel.
In the case of a conventional tile panel, it is necessary to prepare a special panel according to the curved shape of the tunnel, but according to the above configuration, the support plate is bent at the site using the flexibility of the interior sheet. It is sufficient to match the curve, and there is no need to prepare a special member. Furthermore, at the curved part, the central part of the support plate is also fixed with the fixing member, so that the central part of the support plate is fixed with the fixing member without relying only on the bending of the support plate. More familiar with the part.

(15) The bar may be bent along the inner wall surface of the curved portion of the tunnel.
According to this structure, there exists an effect similar to said (14).

(16) You may use the said interior sheet formed by coat | covering the front and back both surfaces of a glass fiber sheet with a polyvinyl chloride.
The interior sheet thus configured is nonflammable and has long-term durability, and has already been used in many sites as a soundproof sheet for large tents and construction sites. Examples of commercially available products include Tarpolon (registered trademark) manufactured by Hiraoka Orizome Co., Ltd.

(17) You may coat the surface on the opposite side to the back surface which faces the said inner wall surface in the said interior sheet with a fluororesin.
According to this configuration, the interior sheet surface is less likely to be contaminated by exhaust gas or the like, so that the interval between regularly performed interior sheet cleaning operations can be extended, leading to a reduction in maintenance costs.

The sheet tension set for the inner wall surface of the tunnel according to the present invention includes a plurality of fixing members fixed to the inner wall surface of the tunnel, the light reflecting rate of the inner wall surface is increased, and water leakage from the inner wall surface can be guided. A light-reflective and waterproof interior sheet that is attached to the plurality of fixing members with a gap between the inner wall surface and the inner wall surface.
The sheet tension set of the present invention may be configured as follows, or may be appropriately combined.

(I) The fixing member includes: a fixing portion that is fixed in an anchor driven into the housing from the inner wall surface of the tunnel; a bulging portion that is provided in contact with the inner wall surface; and the bulging portion. And a protruding shaft portion that is thinner than the bulging portion provided so as to protrude outward, and a retaining portion provided on the protruding shaft portion.
According to this configuration, the same effects as the configurations (3) to (5) can be obtained.

(II) The interior sheet includes a rectangular sheet main body having a pair of folded portions at an upper edge portion and a lower edge portion, and a pair of belt-shaped support plates provided inside the pair of folded portions,
In the seat body, the pair of folded portions each have an attachment hole through which the protruding shaft portion of the fixing member can be inserted,
The pair of support plates each have a plurality of holes that communicate with the plurality of mounting holes, and through which the protruding shafts of the fixing member can be inserted,
Eyelets may be attached to communication portions of the plurality of attachment holes and the plurality of hole portions, respectively, and the seat body and the support plate may be integrated to form the interior sheet.
According to this configuration, the same effects as the configurations (8) and (13) can be obtained.

(III) The retaining portion is a rotary knob provided on the projecting shaft portion that extends in a direction perpendicular to the axis of the projecting shaft portion and is rotatable about the shaft center.
The plurality of mounting holes and the plurality of hole portions may be long holes that are long in the vertical direction through which the rotary knob can be inserted.
According to this configuration, the same effect as the configuration (6) can be obtained.

(IV) The rotary knob has a first locking part that can contact the eyelet of the interior sheet attached to the fixing member,
The eyelet may have a second locking portion that detachably locks the first locking portion of the rotary knob.
According to this configuration, after passing the rotary knob of the fixing member through the eyelet of the interior sheet, the rotary knob is rotated by 90 ° so that the first locking part of the rotary knob is locked to the second locking part of the eyelet. To do. As a result, the seat vibrates due to wind pressure or the like, whereby the rotary knob rotates unexpectedly and comes out of the eyelet, thereby preventing the interior sheet from being detached from the fixing member.

(V) The fixing member can be inserted through the plurality of mounting holes of the interior sheet and the plurality of hole portions of the support plate, and can be screwed to the anchor, and the male screw as the protruding shaft portion And a bolt member having a head portion as the retaining portion larger than the plurality of hole portions, and a nut member as the bulging portion that can be screwed with the male screw portion.
According to this configuration, the same effect as the configuration (7) can be obtained.

(VI) The retaining portion is a return piece projecting in a direction perpendicular to the axial center of the projecting shaft portion,
The interior sheet has a rectangular sheet main body having a pair of folded portions at an upper edge portion and a lower edge portion, and a pair of belt-shaped support plates provided inside the pair of folded portions,
In the seat body, the pair of folded portions each have an attachment hole through which the return piece can be inserted,
Each of the pair of support plates may have a plurality of holes that communicate with the plurality of mounting holes and into which the return piece can be inserted.
According to this configuration, the same effect as the configuration (9) can be obtained.

(VII) The bulging portion of the fixing member may have a thickness of 1 to 15 mm and a hexagonal cross-sectional shape.
According to this configuration, the interior sheet can be mounted 1 to 15 mm above the tunnel inner wall surface. At this time, by forming a male screw in the fixing portion of the fixing member, the bulging portion can be turned with a spanner to screw the fixing member to the anchor.

(VIII) The fixing member includes a fixing portion that is fixed in an anchor driven into the housing from the inner wall surface of the tunnel, a protruding shaft portion that is connected to the fixing portion and protrudes outward, and the protrusion A ring portion that is continuous with the shaft portion,
The interior sheet has a rectangular sheet main body having a pair of cylindrical folded portions on the upper edge portion and the lower edge portion and a plurality of mounting holes provided in the pair of folded portions, and male screw portions on both ends. You may have a pair of bar provided in the inside of a pair of above-mentioned folding part, and a plurality of nut members which can be screwed with the above-mentioned external thread part of a pair of above-mentioned bar.
According to this configuration, the same effect as the configuration (11) can be obtained.

(IX) The fixing member includes: a fixing portion that is fixed in an anchor that is driven into the housing from an inner wall surface of the tunnel; a protruding shaft portion that is connected to the fixing portion and protrudes outward; and the protruding portion A ring portion that is continuous with the shaft portion,
The interior sheet has a rectangular sheet main body having a pair of cylindrical folded portions on the upper edge portion and the lower edge portion and a plurality of mounting holes provided in the pair of folded portions, and male screw portions on both ends. You may have a pair of rope provided in the inside of a pair of above-mentioned folding part, and being fixed to the above-mentioned ring part.
According to this configuration, the same effect as the configuration (11) can be obtained. Further, the cost can be reduced as compared with the configuration (VIII).

  Hereinafter, a sheet tensioning method and a sheet tensioning set on a tunnel inner wall surface according to the present invention will be described in detail with reference to the drawings.

(Embodiment 1-1)
FIG. 1 is an explanatory view having a partially enlarged view showing the inside of a tunnel built in Embodiment 1-1 of a method for sheeting a tunnel inner wall according to the present invention. The use of the present invention is not limited to the tunnel having the structure shown in FIG. 1, and the tunnel shown in FIG. 1 is merely an example.

In the tunnel T shown in FIG. 1, a supervisor passage 2 is provided on one side of the roadway 1, and a walking passage 3 higher than the height of the supervisor passage 2 is provided on the other side of the roadway 1. Further, a drainage groove 4 is provided between the roadway 1 and the monitoring person passage 2 and between the roadway 1 and the walking passage 3. In the case of Embodiment 1-1, the height H ₂ from the roadway 1 of the supervisor passage 2 is 250 mm, and the height H3 from the roadway of the walking passage ₃ is 900 mm.

When interior walls are provided on the inner wall surface of the tunnel T having such a structure, the inner wall surface 5 on the supervisor passage 2 side and the inner wall surface 5 on the walking passage 3 side are interior materials up to a predetermined interior work height H _1. The inventive sheet 10 is attached. The interior work height H ₁ is a height from the roadway 1 and is 2500 mm in the case of the embodiment 1-1.

  Next, a sheet tension set including the sheet 10 and the fixing member 20 used as the interior material of the tunnel T will be described.

<Sheet>
FIG. 2 is a front view illustrating a sheet used in the sheet tensioning method according to Embodiment 1-1. 3A is a front view and FIG. 3B is a side view of the support plate used in the seat of Embodiment 1-1. 4A is a rear view of the eyelet used in the seat of Embodiment 1-1, and FIG. 4B is a side view thereof. 5A is a rear view and FIG. 5B is a side sectional view of the washer used for the eyelet of FIG. 6A is a front view and FIG. 6B is a side sectional view of the eyelet portion of the sheet according to Embodiment 1-1.
In Embodiment 1-1, the sheet 10 stretched on the inner wall surface 5 of the tunnel on the side of the supervisor passage 2 will be described.

The sheet 10 includes a sheet main body 11, three support plates 12, and six double-sided eyelets 13 that integrate the sheet body 11 and each support plate 12. The length L ₁ in the longitudinal direction of the seat 10 is a dimension (2250 mm) obtained by subtracting the height H ₂ (250 mm) of the supervisor passage 2 from the interior work height H ₁ (2500 mm). The lateral length L ₂ of the sheet 10 is the lateral width (2003 mm) of a semi-finished sheet product to be described later.

The sheet body 11 shown in FIG. 2 is manufactured as follows.
First, the front and back surfaces of a square glass fiber sheet are covered with a polyvinyl chloride layer, and a fluororesin coating layer is formed on the surface of the polyvinyl chloride layer to produce a semi-finished sheet product.
The semi-finished sheet product can be obtained by cutting a commercial product into a predetermined length. For example, a product obtained by cutting Tarpolon (registered trademark) of Hiraoka Orizome Co., Ltd. having a fixed width of 2003 mm into a predetermined length can be used. At this time, the predetermined length for cutting the commercial product is the length L ₁ in the longitudinal direction of the sheet 10, the width W ₁ (50 mm) of the folded portion 11 a of the upper edge portion and the lower edge portion, which will be described later, and the folded length. The dimension is obtained by adding the thickness T (2 mm) of the support plate 12 provided in the portion 11a.

Next, the folded portion 11a to form the upper edge and the lower edge of the sheet blank in the back surface side wrapping ₁ minute predetermined width is W, the folded portion 11a at three positions on the left and right positions and a central position of each folded portion 11a A long attachment hole (long hole) 11b is formed in the up and down direction. Furthermore, the mounting holes (long) extending vertically through the sheet semi-finished product at three positions, the left and right positions and the central position at a predetermined height H ₄ (for example, 1400 mm) from the folded-back portion 11a on the lower edge side of the sheet semi-finished product. Hole) 11b is formed. Thereby, the sheet | seat main body 11 is produced. A punch is used as a tool for forming the mounting hole 11b. However, in mass production, it is desirable to produce a die and perform punching.

As shown in FIG. 3, the support plate 12 is made of, for example, a stainless steel plate having a length L ₃ of 2000 mm, a width W ₂ of 40 mm, and a thickness T ₁ of 2 mm. It has a long hole 12a. The hole portion 12a is formed to have substantially the same size as the attachment hole 11b of the seat body 11.

The double-sided eyelet 13 includes an eyelet 13a shown in FIG. 4 and a washer (back seat) 13b shown in FIG.
The eyelet 13a has an oval cylindrical portion 13a ₁ and a flange portion 13a ₂ connected to one end of the cylindrical portion 13a ₁ , and the flange portion 13a ₂ is the front side. The cylinder portion 13a ₁ is formed in a size that can be inserted through the mounting hole 11b of the seat body 11 and the hole portion 12a of the support plate 12 with almost no gap.

The washer 13b includes a central recessed portion 13b ₁ having an oval insertion hole 13b ₁₁ for inserting the cylindrical portion 13a ₁ of the eyelet 13a, and a bent portion 13b bent in an L shape toward the back side provided around the central recessed portion 13b _{1. And 2} .
The eyelet 13a and the washer 13b are parts obtained by die pressing a thin stainless steel plate having a thickness of 0.2 mm to 0.3 mm. The commercially available eyelet is made of aluminum or brass, but stainless steel is preferable in view of strength and salt damage.

<Production of sheet>
The sheet 10 is produced by integrating the sheet main body 11 and the three support plates 12 as shown in FIGS. 6A and 6B using the eyelet 13a and the washer 13b.
Specifically, the support plate 12 is held between the folded portions 11a at the upper edge of the seat body 11, and the eyelet 13a is inserted into the communication holes between the mounting holes 11b of the seat body 11 and the holes 12a of the support plate 12. The cylindrical portion 13a ₁ is inserted from the front surface side of the sheet main body 11, and the cylindrical portion 13a1 of the eyelet 13a protruding to the rear surface side of the sheet main body 11 is passed through the insertion hole 13b11 of the washer 13b and caulked, and the folded portion 11a, the support plate 12, Is integrated. At this time, it can be caulked by using eyelet punches, but for mass production, it is desirable to produce a mold and caulk with a press machine.

Integration of the folded portion 11a at the lower edge of the sheet body 11 and the support plate 12 is the same as described above.
When the support plate 12 is integrated with the intermediate portion of the sheet main body 11, since there is no folded portion at the intermediate portion, the support plate 12 is supported by the mounting holes 11 b of the sheet main body 11 with the support plate 12 being in contact with the back surface of the sheet main body 11. The plate 12 is caulked together with the washer 13b through the eyelet 13a into the communication hole of each hole 12a. In addition, you may insert the strip of the sheet | seat main body 11 between the support plate 12 and the washer 13b in the intermediate part so that it may become the same thickness as an upper edge part and a lower edge part.

In this way, the sheet 10 shown in FIG. 2 is prepared, but the number of the double-sided eyelets 13 may be increased in order to increase the strength of the joint portion between the folding portion 11a of the sheet body 11 and the support plate 12. .
Since the sheet 10 has flexibility, the sheet 10 can be wound and carried around the upper and lower support plates 12 as a core. Since the weight of the seat 10 is about 7 kg, the operator can carry the wound seat 10 through the monitoring staff passage 2 to the construction site, and perform the interior work without blocking one-side lane in the tunnel T. be able to.

<Fixing member>
7A is a front view, FIG. 7B is a side view, and FIG. 7C is a side sectional view of the fixing member of Embodiment 1-1. FIG. 8A is a side sectional view showing a state before assembly of the fixing member of Embodiment 1-1, and FIG. 8B is a side sectional view showing a state before crimping after assembly.
In the case of Embodiment 1-1, the fixing member 20 includes a male screw-type fixing portion 20Aa fixed in a commercially available female screw anchor A (see FIG. 9) driven into the housing from the inner wall surface 5 of the tunnel T, A bulging portion 20Ab connected to the fixed portion 20Aa so as to be in contact with the wall surface 5, a protruding shaft portion 20Ac connected to the bulging portion 20Ab so as to protrude outward, and rotatable about the axis P. And a rotary knob 20B as a retaining portion provided on the protruding shaft portion 20Ac.

Specifically, as shown in FIGS. 8A and 8B, the fixing member 20 is a stainless steel fixed shaft in which a fixed portion 20Aa, a bulging portion 20Ab, and a protruding shaft portion 20Ac are integrated. It is comprised from the member 20A and the rotary knob 20B made from stainless steel.
In the fixed shaft member 20A, the fixing portion 20Aa has a female screw portion a female screw anchor A a screwable male screw portion 20Aa ₁ on the outer peripheral surface, a length L ₄ are substantially equal to the length of the internal thread portion a, For example, it is set to 15 mm.

Bulging portion 20Ab is formed in a hexagonal when viewed from the axial direction P, the length (thickness) L ₅ is, for example, is set to 1 to 15 mm, there preferably 3~7mm More preferably, it is 5 mm. The thickness L ₅ of the bulging portion 20Ab is the mounting distance from the inner wall surface 5 of the tunnel T to the seat 10. Further, the bulging portion 20Ab is formed in a size that cannot pass through the holes of the double-face eyelets 13 of the sheet 10.
Protruding shaft portion 20Ac is a round shaft having a narrower diameter than the bulged portion 20Ab, the length L _6, for example, is set to 6 mm. Further, an inverted conical recess 20Ac ₁ is provided at the tip of the protruding shaft 20Ac. Details of the recess 20Ac ₁ will be described later.

Rotation knob 20B includes a cylindrical shaft portion 20Ba having an insertion hole 20Ba ₁ be substantially without clearance through the protruding shaft portion 20Ac of the fixed shaft member 20A, a pair of knob portions 20Bb provided on the tip outer peripheral surface of the cylindrical shaft portion 20Ba Have
The insertion hole 20Ba ₁ of the cylindrical shaft portion 20Ba has a reverse tapered surface portion 20Ba ₁₁ on the distal end side.
The knob portion 20Bb is formed in an oval shape when viewed from the axial direction, and extends (projects) in a direction perpendicular to the axis of the cylindrical shaft portion 20Ba. The oval size of the knob portion 20Bb is slightly smaller than the oval hole of the double-sided eyelet 13 of the sheet 10.

The fixing member 20 is assembled as follows.
As shown in FIG. 8 (A) and (B), first, inserting the projecting shaft portion 20Ac of the fixed shaft member 20A into the insertion hole 20Ba ₁ of the rotary knob 20B. Then, the tip portion of the protruding shaft portion 20Ac protrudes slightly to outward from opposite tapered surface portion 20Ba ₁₁ of the insertion hole 20Ba _1. Next, the fixed shaft member 20A and fixed by a jig, striking the punch with a tip portion of the semi-spherical recess 20AC ₁ reverse conical stationary shaft member 20A with a hammer. Thus, as shown in FIG. 7 (C), the retaining of the stationary shaft member 20A of the distal end portion (recess 20AC ₁ surrounding portion) is caulked is spread along the reverse tapered surface portion 20Ba ₁₁ by rotating knob 20B Thus, the fixed member 20 that is applied and in which the rotary knob 20B can rotate with respect to the fixed shaft member 20A is obtained.

<Sheet tension method>
9A is a cross-sectional view for explaining the anchoring state of the anchor, and FIG. 9B is a cross-sectional view for explaining the fixing state of the fixing member. 10A is a cross-sectional view illustrating a seat attachment state and FIG. 10B is a cross-sectional view illustrating a seat fixation state in the sheet tension method according to Embodiment 1-1. FIGS. 11A and 11B are front views for explaining a seat attachment state and (B) a seat fixing state in the sheet tensioning method of Embodiment 1-1.

Next, a method of stretching the sheet 10 as an interior material on the inner wall surface 5 of the tunnel T shown in FIG.
First, as shown in FIG. 9A, the female screw anchor is located at a predetermined position on the inner wall surface 5 of the casing of the tunnel T, that is, a position that coincides with the positions of the double-faced eyelets 13 provided at the upper, middle, and lower nine positions of the sheet 10. A (hereinafter may be simply referred to as “anchor A”). At this time, a hole for anchor burying is made in the inner wall surface 5 with a concrete drill, the anchor A is inserted into the cleaned hole, a dedicated driving rod is driven into the anchor A, and the anchor tip is opened and fixed to the frame. To do. In addition, although the commercial thread anchor A can use a commercial item, it is not limited to a commercial item.

Next, as shown in FIG. 9B, the fixing portion 20Aa of the fixing member 20 is screwed to the female screw portion a of the anchor A. On the outer circumferential surface of the fixed portion 20Aa of the fixing member 20 is provided with male screw portions 10Aa _1, firmly tightening the fixing member 20 to the anchor A turning hexagonal bulge portion 20Ab with a wrench. In this case, for example, fixing member fixing member 20 to be screwed into the anchor A of the upper three locations where the thickness L ₅ of the bulging portion 20Ab using those 15 mm, is screwed into the anchor A of middle and lower six 20 may have a bulging portion 20Ab having a thickness L5 of ₅ mm.
Since the anchor A and the fixing member 20 are small, the work is not carried as a load, and the work can be performed only in the monitoring staff passage 2 without blocking the one-side lane.

  Next, the sheet 10 prepared in advance is brought in, the rotary knobs 20B of the fixing members 20 are vertically aligned, and the double-sided eyelets 13 of the sheet 10 are arranged as shown in FIGS. 10 (A) and 11 (A). Each rotary knob 20B is inserted into the hole, and each rotary knob 20B is turned sideways as shown in FIGS. 10 (B) and 11 (B). As an efficient work sequence at this time, first, the double-sided eyelet 13 is inserted into the fixing member 20 on the upper edge side of the sheet 10 and the rotary knob 20B is turned sideways to fix it. The double-sided eyelet 13 is inserted into the fixing member 20 on the side, and the rotary knob 10B is rotated and fixed sideways. Finally, the double-sided eyelet 13 is inserted into the fixing member 20 at the upper and lower intermediate parts and the rotary knob 20B is rotated sideways and fixed.

  By such work, each double-sided eyelet 13 is stopped from coming off from each rotary knob 20B, and the sheet tension of one sheet 10 is completed. In the same manner, the second and subsequent sheets 10 are sequentially stretched along the inner wall surface 5 of the tunnel T. At this time, the inner wall surface of the tunnel can be covered without creating a gap by slightly overlapping the left and right end portions (right and left sides of the support plate 12) of two adjacent sheets.

As shown in FIG. 10B, the sheet 10 stretched on the inner wall surface 5 of the tunnel T as described above is in a state where it is floated by a predetermined distance G from the inner wall surface 5, that is, the double-face eyelets 13 bulge out of the fixing member 20. for abutting the section 20Ab, made from the inner wall surface 5 and floated least thickness L ₅ minutes of the bulge portion 20Ab. Additionally, the thickness L ₅ of the bulging portion 10Ab of the upper three fixed member 20 and 15 mm, a thickness L ₅ of the bulging portion 10Ab of the middle and lower six fixing member 20 by a 5 mm, The gap between the inner wall surface 5 and the upper edge portion of the sheet 10 is wider than the gap on the intermediate portion side and the lower edge portion side. The inner wall surface 5 of the tunnel T is curved upward, and water droplets from the upper part of the inner wall surface 5 may fall vertically onto the sidewalk. This makes it easier to receive the water leakage at the rear surface of the upper edge of the sheet 10, and the effect of suppressing the drop of water drops on the sidewalk can be enhanced.

  Further, the double-sided eyelets 13 at the upper edge portion are placed on the respective fixing members 20 by the weight of the sheet 10, but the fixing members 20 are positioned at the upper and lower intermediate positions of the double-sided eyelets 13 at the intermediate portion and the lower edge portion. Thus, the sheet 10 can be attached to the fixing member 20 with a margin without being excessively pulled in the vertical direction.

Further, as shown in FIG. 1, the seat 110 is stretched on the inner wall surface of the tunnel T on the side of the walking passage 3 by the same method as described above. In this case, the height H ₃ of the walking passage 3 from the roadway 1 is set. Is 900 mm and the interior height H ₁ is 2500 mm. Therefore, the longitudinal length of the seat 110 is set to 1600 mm obtained by subtracting the height H ₃ of the walking passage 3 from the interior height H ₁ . Further, since the sheet 110 has a shorter length in the vertical direction than the sheet 10, only the upper edge and the lower edge need be fixed to the inner wall surface 5. The three-sided eyelets 13 and the support plate 12 are omitted.

  The sheets 10 and 110 that are stretched around the curved portion of the tunnel T are bent so that the support plate 12 extends along the inner wall surface 5 of the curved portion of the tunnel T. According to this configuration, using the flexibility of the sheets 10 and 110, it is only necessary to bend the support plate 12 on the site to match the curve, and it is not necessary to prepare a special member. Further, in the curved portion, since the center portion in the left-right direction of the support plate 12 is also fixed by the fixing member 20, the center portion of the support plate 12 is fixed by the fixing member 20 without relying only on the bending of the support plate 12. Therefore, the sheets 10 and 110 can be further adapted to the curved portion.

  The sheet tension on the inner wall of the tunnel of the present invention is simpler than the conventional tile direct attachment method, panel direct attachment method, and panel floating method, reducing work time and avoiding the closure of the tunnel lane. In addition, when the water leaks from the ceiling or gets dirty due to water splashes on the road surface, only the dirty sheet 10 can be replaced. In particular, the sheet tensioning method of the present invention is effective in the current situation where inspection of the interior surface of the frame is obligated due to the aging of the tunnel.

Next, Table 1 below shows a comparison table of the sheet tensioning method (sheet floating tension method) of the present invention and the conventional tile direct pasting method, panel direct pasting method, panel float pasting method and coating.

  As shown in Table 1, according to the sheeting method of the present invention, a high sound absorption effect that cannot be obtained by the conventional method can be obtained. Furthermore, in terms of safety, in the case of the tile direct attachment method, the panel direct attachment method, and the panel floating method, if the tile or panel is detached from the inner wall surface 5, it may fall on the roadway 1 and cause a serious vehicle accident. On the other hand, in the present invention, even if the upper anchor A is removed, the anchor A itself remains attached to the seat 10, and the upper portion of the seat 10 is only folded from the intermediate support plate 12 and hangs down. It does not fall to 1 (see FIG. 1).

(Embodiment 1-2)
12A and 12B are rotary knobs of a fixing member used in the sheet tensioning method of Embodiment 1-2, wherein FIG. 12A is a rear view, FIG. 12B is a side view, and FIG. 12C is a bottom view. FIGS. 13A and 13B are eyelets used in the sheet tensioning method of Embodiment 1-2, in which FIG. 13A is a front view, FIG. 13B is a side view, and FIG. FIGS. 14A and 14B are front views for explaining a seat attachment state and FIG. 14B a fixed state in the sheet tensioning method of the embodiment 1-2. FIG. 15 is a side view for explaining a fixed state of the sheet in the sheet tensioning method of the embodiment 1-2. 14 and 15, the same elements as those in FIGS. 10 and 11 are denoted by the same reference numerals.

  In the case of the embodiment 1-2, the configuration of the rotary knob of the fixing member and the eyelet of the sheet is different from that of the embodiment 1-1, and the other configuration is the same as that of the embodiment 1-1. Hereinafter, the points of the embodiment 1-2 different from the embodiment 1-1 will be mainly described.

As shown in FIGS. 12 to 15, the rotary knob 220 </ b> B of the fixing member 220 in the embodiment 1-2 has a cylindrical shaft part 220 </ b> Ba and a pair of knob parts 220 </ b> Bb, and the rotary knob of the fixing member 20 in the embodiment 1-1. The basic structure is the same as 20B (see FIG. 8).
For embodiments 1-2, further on the rear surface 220Bb ₁ of each knob 220Bb of rotation knob 220B, the first locking of the pair capable of contacting with the eyelet 213a of the double-sided eyelet 213 of the sheet 210 which is attached to the fixed member 220 having a part 220Bb _2. The first locking portion of the pair 220Bb ₂ is a cross-sectional semi-circular ridge extending in a direction orthogonal to the axis P of the rotary knob 220B.

Eyelet 213a of the double-sided eyelet 213 in the embodiment 1-2 includes the oval cylindrical portion 213a _1, and a flange portion 213a ₂ provided continuously at one end of the cylindrical portion 213a _1, in the embodiment 1-1 The basic structure is the same as the eyelet 13a of the double-sided eyelet 13 (see FIG. 4). In addition, the washer of Embodiment 1-2 is the same as Embodiment 1-1.
For embodiments 1-2, further to the pair of linear portions on the surface of the flange portion 213a2 of the eyelet 213a, a pair of second locking to the first engaging portion 220Bb ₂ of the rotary knob 220B detachably engaged Part 213ax. The second locking portion 213ax includes a pair of convex portions 213ax _{1 having} a semicircular cross section and a concave portion 213ax ₂ therebetween.

In the case of the embodiment 1-2, similarly to the embodiment 1-1, a plurality of anchors are driven into the tunnel inner wall surface 5, the fixing member 220 is screwed to each anchor, and the rotary knob 220b of each fixing member 220 is oriented vertically. Then, as shown in FIG. 14A, the rotary knobs 220B are passed through the holes of the double-sided eyelets 213 of the sheet 210. Then, as shown in FIG. 14B, each rotary knob 220B is turned sideways. Thus, the first locking portion 220Bb ₂ of the pair of rotary knob 220B is engaged with the pair of second engaging portions 213ax eyelet 213a.

Specifically, as shown in FIGS. 14B and 15, each first locking portion 220Bb ₂ of the rotary knob 220B on the upper edge side of the sheet 210 is connected to each second locking portion 213ax of the eyelet 213a. The first locking portions 220Bb ₂ of the rotary knob 220B on the intermediate side and the lower edge side of the sheet 210 are locked on the upper convex portions 213ax ₁ and the second locking portions 213ax of the eyelet 213a. locking positioned in recess 213Ax ₂ of. Thereby, since each rotation knob 220B is prevented from rotating, it is possible to prevent a problem that the rotation knob 220B is rotated by the vibration of the sheet 210 due to wind or the like and the sheet 210 is detached.

Incidentally, the second locking portion 213ax of the first engaging portion 220Bb ₂ and eyelet 213a of the rotary knob 220B is not limited to the above embodiment, for example, the contact surfaces of the first and the second locking portion by sandblasting The surface roughness may be increased to increase the frictional resistance.

(Embodiment 2)
16A is a front view and FIG. 16B is a side cross-sectional view of the eyelet portion of the sheet according to the second embodiment. FIGS. 17A and 17B are side sectional views for explaining a state immediately before attachment of a sheet and FIG. In FIG. 17, the same elements as those in FIG. 10 are denoted by the same reference numerals.
Hereinafter, differences from the embodiments 1-1 and 1-2 in the embodiment 2 will be mainly described.

  As shown in FIG. 16, the sheet 310 according to the second embodiment is provided with nine circular double-faced eyelets 313 at the upper edge, the middle, and the lower edge. Accordingly, circular attachment holes are provided at a total of nine locations of the folded portion 311a at the upper edge portion of the sheet main body 311 and the folded portion 311a at the middle portion and the lower edge portion, and the three support plates 312 attached thereto are also provided. Three circular holes are provided for each.

As shown in FIG. 17A, the fixing member 320 in the second embodiment includes a male screw portion (fixing portion) 320a _{1 that} can be screwed to the female screw anchor A driven into the inner wall surface 5 of the tunnel, and a hexagonal head portion ( a bolt member 320a having a stop portion) 320a ₂ omission, male thread portion 320a ₁ and screwable nut member (bulge portion of the bolt member 320a) 320b and a washer is inserted into the male screw portion 320a ₁ of the bolt member 320a 320c And a cylindrical spacer (protruding shaft portion) 320d.

The size of the head portion 320 a ₂ of the bolt member 320 a is set to be larger than the hole of the double-face eyelet 313.
The thickness T ₂ of the nut member 320b, for example, is set to 5 to 15 mm.
The length of the spacer 320d is set slightly longer than the thickness of the double-face eyelet 313.

The sheet tension method to the tunnel inner wall surface performed using the configured sheet tension set of the second embodiment having a sheet 310 and the fixing member 320 so as, firstly, the male thread portion 320a ₁ of the bolt member 320a washer 320c, The spacers 320d and the sheet 310 are inserted into the double-side eyelets 313.
Then, after fastening the external thread portion 320a ₁ of the bolt member 320a to the spacer 320d screwed a nut member 320b, as shown in FIG. 17 (B), the female screw anchors A that typed in advance in tunnel wall 5 The male screw part 320a ₁ of the bolt member 320a is screwed.

At this time, the thickness T ₂ of the nut member 320b of the fixing member 320 used on the upper edge side of the sheet 310 is set to the thickness T of the nut member 320b of the fixing member 320 used on the intermediate side and lower edge side of the sheet 310. By making it thicker than _2, the gap between the inner wall surface 5 and the upper edge of the sheet 310 can be made wider than the gap on the intermediate side and the lower edge side, as in the embodiment 1-1. .
In the fixing member 320 of the second embodiment, the spacer 320d may be omitted. In this case, it is preferable to use a bolt member in which the spacer portion is integrated.

(Embodiment 3)
18A and 18B are sheets used in the sheet tensioning method according to the third embodiment, in which FIG. 18A is a front view of main parts, FIG. 18B is a side view of main parts, and FIG. FIGS. 19A and 19B are fixing members used in the sheet tensioning method of Embodiment 3, wherein FIG. 19A is a front view and FIG. 19B is a side view. 20A is a side cross-sectional view illustrating a state immediately before the seat is attached, FIG. 20B is an attached state, and FIG. 20C is a side sectional view illustrating a fixed state. In FIG. 20, the same elements as those in FIG. 10 are denoted by the same reference numerals.
Hereinafter, the points of the third embodiment different from the embodiments 1-1, 1-2, and 2 will be mainly described.

  As shown in FIGS. 18A to 18C, three sheets 410 in the third embodiment are provided in each of the folded portion 411a on the upper edge portion of the sheet body 411, the middle portion and the folded portion on the lower edge portion (not shown). A circular mounting hole 411b is formed. At this time, the attachment hole 411b is formed only on the back surface side of the folded portion 411a and does not penetrate the front surface side of the folded portion 411a.

The support plate 412 attached to the folded portion 411a at the upper edge portion of the sheet body 411, the intermediate portion and the folded portion at the lower edge portion (not shown) is a daruma shape communicating with each of the attachment holes 411b (small circles above the large round holes). A hole portion 412a having a shape in which the lower portions of the holes overlap.
In addition, a belt-like fabric (same fabric as the sheet main body 411) for accommodating the middle support plate is welded in a cylindrical shape on the back surface of the intermediate portion (not shown) of the sheet main body 411. A mounting hole communicating with each hole of the support plate is formed.
Further, the end portion of the folded portion 411a at the upper edge portion of the sheet body 411 and the end portion of the folded portion at the lower edge portion are welded in a cylindrical shape.

  As shown in FIGS. 19A and 19B, the fixing member 420 in the third embodiment includes a male screw portion (fixing portion) 420a that can be screwed to the female screw anchor A driven into the inner wall surface 5 of the tunnel, and a male screw portion. A hexagonal bulging portion 420b as viewed from the direction of the axial center Q connected to 420a, and a protruding shaft portion 420c thinner than the bulging portion 420b connected to the bulging portion 420b so as to protrude outward. And a circular return piece (preventing part) 420d protruding in a direction perpendicular to the axis Q of the protruding shaft part 420c.

In the fixed member 420, the thickness T ₃ of the bulge portion 420b, for example, is set to 5 to 15 mm.
Further, the width of the protruding shaft portion 420c in the direction of the axis Q (the interval between the bulging portion 420b and the return piece 420d) is set to be slightly larger than the total thickness of the support plate 412 and the folded portion 411a of the sheet 410. .
The circular size of the return piece 420d is slightly smaller than the large round hole of the mounting hole 412a of the support plate 412 and slightly larger than the small round hole.

  As shown in FIG. 20 (A), the sheet tensioning method on the inner wall surface of the tunnel using the sheet tensioning set of the third embodiment provided with the sheet 410 and the fixing member 420 configured as described above is performed in advance. The male screw portion 420a of the fixing member 420 is screwed to the female screw anchor A driven into the inner wall surface 5.

  Next, as shown in FIG. 20 (B), after the return piece 420d of the fixing member 420 is passed through a large round hole (see FIG. 18 (C)) of the mounting hole 412a of the support plate 412 of the sheet 410, FIG. As shown in (C), the support plate 412 is placed on the protruding shaft 420 c of the fixing member 420. Thereby, a small round hole of the mounting hole 412a of the support plate 412 is fitted into the protruding shaft portion 420c of the fixing member 420, and the support plate 412 is prevented from coming off by the return piece 420d of the fixing member 420.

Note that the thickness T ₃ of the bulging portion 420 b of the fixing member 420 used on the upper edge side of the sheet 410 is thicker than the thickness of the bulging portion of the fixing member used on the intermediate side and lower edge side of the sheet 410. By doing so, the clearance gap between the inner wall face 5 and the upper edge part of the sheet | seat 310 can be made wider than the clearance gap between the intermediate part side and the lower edge part side similarly to Embodiment 1-1.

(Embodiment 4-1)
FIG. 21 is a front view showing a sheet used in the sheet tensioning method of Embodiment 4-1. FIG. 22 is the seat of FIG. 21, wherein (A) is a front view of the main part, (B) is a side view of the main part, and (C) is a rear view of the main part. FIG. 23 is a side sectional view for explaining a state immediately before attachment of a sheet in the sheet tensioning method of Embodiment 4-1, and FIG. 24 is an upper view for explaining a fixing state of the sheet in the sheet tensioning method of Embodiment 4-1. It is the plane sectional view seen from. 23 and 24, the same reference numerals are given to the same elements as those in FIG.
Hereinafter, points of the embodiment 4-1 different from the embodiments 1-1, 1-2, 2 and 3 will be mainly described.

  As shown in FIGS. 22 to 24, the sheet 510 according to Embodiment 4-1 has a pair of folded portions 511a and a plurality of mounting holes 511b provided in the pair of folded portions 511a on the upper edge portion and the lower edge portion. A rectangular sheet main body 511, a pair of rods 512 having male threaded portions 512a at both ends and provided inside the pair of folded portions 511a, and a plurality of screwable parts with the male threaded portions of the pair of rods A nut member 514 (see FIG. 24). In FIG. 22, the nut member is not shown.

In the sheet main body 511, the folded portion 511 a is formed in a cylindrical shape by welding an end portion thereof to the back surface of the sheet main body 511.
The attachment holes 511b are formed at the left and right ends of the upper portion of the folded portion 511a, and do not penetrate the surface side of the sheet main body 511.
The rod 512 is a stainless steel rod having a diameter of about 3 to 5 mm, for example, has a length slightly shorter than the folded portion 511a, and is provided with male screw portions 512a at both ends. The length of the male screw portion 512a is set to be approximately equal to the distance from the left end portion (or right end portion) of the folded portion 511a of the seat body 511 to the mounting hole 511b in the vicinity thereof.

The fixing member 520 in the embodiment 4-1 includes a bolt member 520A and a nut member 520B.
The bolt member 520A includes a male screw portion (fixed portion) 520Aa fixed in the female screw anchor A driven into the housing from the inner wall surface 5 of the tunnel, a protruding shaft portion 520Ab connected to the male screw portion 520Aa, and a protruding shaft. And a ring portion (a retaining portion) 520Ac connected to the portion 520Ab.
The nut member 520B can be screwed onto the male screw portion 520Aa of the bolt member 520A.
According to the fixing member 520, in a state where the male screw portion 520Aa is screwed to the female screw anchor A, the nut member 520B contacts the inner wall surface 5 of the tunnel, and the protruding shaft portion 520Ab protrudes outward from the nut member 520B. (See FIG. 24).

  As shown in FIG. 23, first, a bolt member 520A is used as a method for tensioning the inner wall surface of the tunnel using the sheet tension set of Embodiment 4-1 including the sheet 510 and the fixing member 520 configured as described above. After the nut member 520B is screwed to the male screw portion 520Aa, the male screw portion 520Aa of the bolt member 520A is screwed to the female screw anchor A previously driven into the inner wall surface 5 of the tunnel. At this time, the fixing member 520 is fixed to the female screw anchor A so that the hole of the ring portion 520Ac faces in the left-right direction.

Next, as shown in FIG. 24, the ring portions 520Ac of the plurality of fixing members 520 are inserted into the plurality of mounting holes 511b of the sheet main body 511, and the bar material is provided inside the folded portion 511a of the sheet main body 511 and the ring portion 520Ac. 512 is inserted.
Thereafter, the nut member 514 is screwed onto the male threaded portion 512a at both ends of the rod member 512, whereby the rod member 512 is fixed so as not to come off from the ring portion 520Ac of the fixing member 520.
Also in this case, if the upper edge portion of the sheet 510 is fixed first, and then the lower edge portion is fixed, the sheet tensioning work can be performed efficiently. Further, at the curved portion of the tunnel, the bar 512 may be bent gently using an instrument.
22 to 24 exemplify the case where the bar members 512 are provided on the upper edge portion and the lower edge portion of the sheet 510, the bar members may also be provided in the intermediate portion as in Embodiment 1-1.

(Embodiment 4-2)
The sheet 510 may be fixed to the pair of fixing members 520 by using a rope instead of the bar in Embodiment 4-1, and connecting both ends of the rope to the ring portions 520Ac of the pair of left and right fixing members 520.

(Embodiment 5)
The sheet tensioning methods described in Embodiments 1-1, 1-2, 2, 3, 4-1, and 4-2 may be combined. For example, even if the fixing method of the lower edge portion or the lower edge portion and the intermediate portion of the sheet in the embodiment 1-1 or 1-2 is changed to the fixing method of the embodiment 2, 3, 4-1, or 4-2. Good.

(Embodiment 6)
FIG. 25 is an explanatory view showing the inside of a tunnel that is interiorized by the sheet tensioning method of the sixth embodiment. In FIG. 25, elements similar to those in FIG. 1 are denoted by the same reference numerals.
In the case of Embodiment 6, the sheet 610 is affixed to the inner wall surface 5 on the side of the supervisor passage 2 of the tunnel T with an interior height H ₁₁ of 1600 m using the sheet tensioning method of the above-described various embodiments. At this time, the longitudinal length of the seat 610 to be used is 1350 mm obtained by subtracting the height H ₂ (250 mm) of the supervisor passage 3 from the interior height H ₁₁ (1600 mm). Therefore, the upper edge and the lower edge of the sheet 610 may be fixed by the fixing method according to Embodiment 1-1, 1-2, 2, 3, 4-1, 4-2, or 5.

An arrow indicating the traveling direction is printed on the surface of the sheet 610. Printing of the sheet 610 can be replaced by printing various guide characters in addition to the arrows.
The same sheet 610 can be stretched on the inner wall surface 5 on the pedestrian passage 3 side.

(Other embodiments)
In a sheet having double-sided eyelets, the washer may be omitted, and only the eyelets may be provided around the communication hole between the attachment hole of the sheet main body and the hole of the support plate to integrate the sheet main body and the support plate.

  The disclosed embodiments should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

5 inner wall surface 10, 110, 210, 310, 410, 510, 610 sheet 11 sheet body 11a folded portion 11b mounting hole 12 support plate 12a hole portion 13a, 213a eyelet 20, 220, 320, 420, 520 fixing member 20Aa, 320a , 420a, 520Aa fixing portion 20Ab, 320b, 420b, 520B bulging portion 20Ac, 320a, 420c, 520Ab protruding shaft portion 20B, 320a _2, 420d, 520Ac retaining portion 220Bb ₂ first locking portion 213ax second locking portion 512 Bar A Female thread anchor G Predetermined spacing (gap between sheet and inner wall surface)
T tunnel

Claims (18)

  A light reflecting and waterproof interior sheet is fixed to the inner wall surface of the tunnel housing with a fixing member so as to increase the light reflectance of the inner wall surface and to guide water leakage from the inner wall surface. A method of attaching sheets to the inner wall surface of a tunnel that is installed with a gap between them.   The sheet stretching method according to claim 1, wherein a width of the gap is 1 to 15 mm.   The sheet tensioning method according to claim 1 or 2, wherein a gap between an upper edge portion of the interior sheet and the inner wall surface is set larger than a gap between a lower edge portion of the interior sheet and the inner wall surface. The fixing member has a fixing part fixed in the tunnel housing, and a protruding shaft part connected to the fixing part so as to protrude from the inner wall surface to the outside.
The sheet tension method according to any one of claims 1 to 3, wherein the interior sheet is fixed to the protruding shaft portion of the fixing portion.   The seat tension method according to claim 4, wherein the protruding shaft portions of the plurality of fixing members are inserted into a plurality of mounting holes provided in the interior sheet to fix the interior sheet to the fixing member.   The sheet tensioning method according to claim 5, wherein a retaining portion is provided at a tip portion of the projecting shaft portion of the fixing member so as to prevent the projecting shaft portion from being removed from the mounting hole of the interior sheet. The plurality of mounting holes of the interior sheet are long holes that are long in the vertical direction,
A rotary knob in which the retaining portion of the fixing member extends in a direction perpendicular to the axis of the projecting shaft portion and can be inserted through the elongated hole provided in the projecting shaft portion so as to be rotatable around the shaft center. The sheet tensioning method according to claim 6.   The sheet tensioning method according to claim 6, wherein the fixing member is a bolt member, and the retaining portion is a head portion of the bolt member.   A folded portion is formed in at least the upper edge portion of the upper edge portion and the lower edge portion of the rectangular interior sheet, the plurality of attachment holes are formed in the folded portion, and a band shape is formed inside the folded portion. The sheet tensioning method according to any one of claims 5 to 8, wherein a plurality of hole portions are inserted into the support plate and communicated with the plurality of mounting holes of the interior sheet. The retaining portion of the fixing member is a return piece projecting in a direction perpendicular to the axis of the projecting shaft portion;
A folded portion is formed in at least the upper edge portion of the upper edge portion and the lower edge portion of the rectangular interior sheet, the plurality of attachment holes are formed in the folded portion, and a band shape is formed inside the folded portion. A plurality of hole portions communicating with the plurality of mounting holes of the interior sheet are formed in the support plate, and the return of the plurality of fixing members is inserted into the plurality of hole portions of the support plate. The sheeting method according to claim 6, wherein the sheet is hooked through a piece.   A plurality of attachment holes are formed in an intermediate portion in the height direction of the interior sheet, and a support plate having a plurality of holes that can communicate with the attachment holes is attached to the intermediate portion of the interior sheet. Or the sheeting method of 10. The retaining portion of the fixing member is a ring portion;
A folded portion is formed on at least the upper edge portion of the upper edge portion and the lower edge portion of the rectangular interior sheet, the plurality of attachment holes are formed in the folded portion, and the plurality of attachment holes are formed with the plurality of the attachment holes. The seat tension method according to claim 6, wherein the ring portion of the fixing member is inserted, and a bar or rope is inserted into the inside of the folded portion and the ring portion, and the bar or rope is fixed to the ring portion. .   The sheet tensioning method according to claim 12, wherein a cylindrical portion into which a bar or a rope can be inserted is formed at an intermediate portion in the height direction on the back surface of the interior sheet, and a plurality of attachment holes are formed in the cylindrical portion.   The sheet | seat tensioning method as described in any one of Claims 5-9 which attaches eyelets to the surrounding part of these attachment holes of the said interior sheet.   The sheet stretching method according to any one of 9 to 11, wherein the support plate is bent along the inner wall surface of the curved portion of the tunnel.   14. The sheet tensioning method according to 12 or 13, wherein the bar is bent along the inner wall surface of the curved portion of the tunnel.   The sheet | seat tensioning method as described in any one of Claims 1-16 using the said interior sheet formed by coat | covering the front and back both surfaces of a glass fiber sheet with a polyvinyl chloride.   A plurality of fixing members fixed to the inner wall surface of the tunnel, and the plurality of fixing members with a gap between the inner wall surface so as to increase light reflectivity of the inner wall surface and to conduct water leakage from the inner wall surface A sheet tension set for the inner wall surface of a tunnel provided with a light-reflective and waterproof interior sheet attached to a wall.

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