JPS6319437Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a waterproof sheet used when attached to a support installed in a tunnel.

Conventionally, in the lining part of a tunnel, as shown in Fig. 1, a support c made of H-shaped steel in cross section is installed along the circumferential direction of the inner peripheral wall of a tunnel b excavated into a ground a, with the outer surface of the flange facing up. A large number of tunnels b are installed individually toward the inner circumferential wall, and a primary lining concrete d is cast, and an impermeable waterproof sheet e is stretched between these supports c and c, and this waterproof sheet e Secondary lining concrete f is cast from the outside of the ground, and by interposing a waterproof sheet e between the primary and secondary lining concrete d and f, spring water from the ground a side is poured. This prevents water from leaking to the secondary lining concrete f side.

In this construction, the waterproof sheet e made of polyethylene or polyvinyl chloride must be watertightly stretched between the supports c and c, and if it is not watertight, spring water from the ground a will leak. Water leaks to the secondary lining concrete f side.

Here, as a method of stretching the waterproof sheet e between the supports c and c, as shown in FIG. , i respectively, and connect both ends of the waterproof sheet e in the width direction to the primary lining concrete side flanges g, g of the primary lining concrete side flanges g, g and the inner surface of the adapter i,
A method is adopted in which the two parts are held together by the two parts.

However, the installation method of the waterproof sheet e using this kind of adapters i, i corresponds to the installation position of the adapters i, i among the width direction ends of the waterproof sheet e,
The part where adapters i and i are in contact is watertight, but the widthwise end part where adapters i and i are not in contact is not watertight, so it is impossible to pass through this non-watertight part. There is a problem that spring water from the ground a side leaks to the secondary lining concrete f side, and there is a drawback that water leaks at the attachment part of the waterproof sheet e to the shoring c and c and the crown part of the shoring. Ta.

Furthermore, as shown in Figure 3, if the primary lining concrete d is cast beyond the flanges g, g of the shoring c, c, the above adapters i, i cannot be used. Ta.

The present invention was developed in view of the above circumstances, and by fixing a bendable hanging body made of metal wire or metal plate to one side of the main body of the waterproof sheet,
The waterproof sheet can be easily and reliably attached to the shoring, there is no risk of water leakage at the part where the waterproof sheet is attached to the shoring, and the primary lining concrete is cast so as to partially bury the shoring. To provide a waterproof sheet that can be attached to shoring without any trouble.

That is, in order to achieve the above object, the present invention provides a waterproof sheet that is attached to the flange of a shoring made of H-shaped steel installed in a tunnel, in which both ends in the longitudinal direction are formed wide, and the middle part is wide. is formed to have a narrow width, and the length of the intermediate portion is formed to be approximately the same as the flange width of the shoring, and both longitudinal ends of the intermediate portion are made of bendable metal wires or metal plates. A body is attached to one surface of the main body of the water-impermeable base sheet, both ends of the intermediate length of the hanging body are bent integrally with the main body of the sheet, and wide parts of both longitudinal ends of the hanging body are attached to the supporting body. It is configured to be hung on the flange of the construction.

According to the waterproof sheet of the present invention, the other surface of the waterproof sheet corresponding to the hanging body is applied to the outer surface of the secondary lining concrete side flange of the shoring, and By folding both sides (both ends in the horizontal direction) toward the flange together with the waterproof sheet, and by hooking the wide parts of both ends of this hanging body to the inner surface of the flange, the waterproof sheet covers the flange of the shoring from below. It can be installed easily and reliably with one touch, and there is no gap that could cause water to leak at the part where the tarpaulin is attached to the shoring. Water leakage is reliably prevented. Moreover, even if a part of the shoring is buried in the primary lining concrete, the waterproof sheet can be easily attached to the shoring without any problems.

Below, Figures 4 to 9 are shown for one embodiment of the present invention.
This will be explained with reference to the figures.

In the figure, 1 is a waterproof sheet according to an embodiment of the present invention, and this waterproof sheet 1 is arranged so that one side of the main body of the waterproof sheet (mainly an impermeable base sheet) 2 is formed on one side of the main body of the waterproof sheet (mainly of an impermeable base sheet) 2 along the width direction at approximately the center. A mounting member 3 having a plurality of hooks 4 spaced apart from each other by a predetermined distance is attached, and water permeable layers 5a and 5b are provided on the other side of the waterproof sheet main body 2 at both ends in the length direction and approximately at the center thereof, respectively, in the width direction. It has a continuously laminated structure.

Here, the waterproof sheet main body 2 can be formed of a plastic sheet, a rubber sheet, a composite sheet made by laminating these sheets on metal foil, etc., but polyethylene sheets, ethylene-vinyl acetate copolymer sheets, etc. are particularly preferred. used. In addition, the water-permeable layers 5a and 5b are preferably formed using a sheet made of synthetic resin such as polyethylene, polypropylene, polyester, or nylon, a nonwoven fabric of synthetic fiber, or an open-cell foam such as polyvinyl chloride or polyurethane. I can do it.

Further, as shown in FIG. 5, the hooking body 4 is made of a metal wire such as a steel wire, a stainless steel wire, a phosphor bronze wire, etc., and has large-diameter (wide) circular ring-shaped portions 6 at both ends in the length direction. . Note that the length of the intermediate portion 7 is formed to be approximately the same as the width of the shoring flange. As shown in FIGS. 5 and 6, this hanging body 4 is made of metal foil such as aluminum foil, polyethylene, polypropylene, etc.
It is inserted between two flexible films 8, 8 made of plastic films such as polyvinyl chloride, ethylene-vinyl acetate copolymer, rubber sheets, or laminates thereof, and is bonded by the action of adhesive 9. 8, 8, and the mounting member 3 configured in this manner is formed on one side of one flexible film 8 to correspond to the intermediate portion 7 and have a length approximately equal to the width of the shoring flange. The sheet is attached to the sheet main body 2 via an adhesive layer 10. Note that the water permeable layer 5b at the center is also formed to have approximately the same length as the width of the shoring flange.

Further, this waterproof sheet 1 is provided with a plurality of melt spot portions 11 spaced apart from each other at predetermined intervals on the other surface of the sheet main body 2, corresponding to the water-permeable layers 5a on both end sides. There is.

As shown in FIG. 7, this melt spot section 11 has a ring-shaped frame 12 made of synthetic resin whose surface is coated with a luminous substance such as fluorescent paint, which is protruded from one side of the main body 2, and this frame 12 Disc-shaped washer 13 inside
The main body 2 is bonded with a suitable hot melt adhesive such as an ethylene-vinyl acetate copolymer hot melt film. .

The water-permeable layer 5a at both ends is heat-sealed 15 to the main body 2 in a point-adhesive manner corresponding to the formation location of the melt spot portion 11, and the other portions are not bonded to the main body 2. A gap 16 can be formed.

Next, the case where the above-mentioned waterproof sheet 1 is attached to the support 17 made of H-shaped steel will be explained.
As shown in FIG. 8, the other surface of the waterproof sheet 1 corresponding to the mounting member 3 is placed against the outer surface of the secondary lining concrete casting side flange 18a of the shoring 17, and the Both end portions (both lengthwise ends of the intermediate portion 7) are bent approximately 180 degrees toward the flange 18, and the circular ring portions 6, 6 are attached to the flange 18.
a Hang it so that it faces the inside surface. As a result, the sheet arm 2 to which the attachment member 3 having the hook 4 is attached is bent in the same way, and the sheet main body 2 is also hooked to the flange 18a by the hooking action of the hook 4 on the flange 18a. It can be fixed and installed.

In this state, the permeable layer 5b at the center of the other surface of the sheet main body 2 contacts the outer surface of the flange 18a of the shoring 17, and the permeable layer 5a at both ends contacts the primary lining concrete 19. As shown in the figure, a fixing member 20 such as a bolt or a concrete nail is passed through the frame 12 of the melt spot section 11, and
3 into the primary lining concrete 19, and further inject the heated and melted heat-fusible material 21 onto the head 20a of the fixing member 20 using an injection device such as a hand gun, and this heat-fusible material substance 21 to frame 12
It is integrated with the heat-fusible material 14 filled therein, and the head 20a of the fixing member 20 is covered with a film of the heat-fusible material 21. Therefore,
This covers the head 20a of the fixing member 20 in a watertight manner.

Note that the ends of the waterproof sheet 1 attached to one support 17 and the waterproof sheet 1 attached to another adjacent support 17 are connected to each other by means such as thermal welding. Furthermore, secondary lining concrete is poured from the outside (the side where the melt spots 11 are disposed) of the waterproof sheets 1, 1, . . . that have been successively connected in this manner.

The waterproof sheet 1 according to the embodiment has a bendable hook 4 made of metal wire, and by bending the hook 4 and hooking it to the shoring 17. , the waterproof sheet 1 can be easily attached to the shoring 17 with one touch, and as shown in FIG. 8, the primary lining concrete 19 buries the primary lining concrete side flange 18b of the shoring 17. Even if the waterproof sheet 1 is cast on the other flange 18a, there is no problem at all.
is latched and attached. In this case, the hooking body 4 has an intermediate portion 7 having a length approximately equal to the width of the shoring flange and consisting of two linear portions formed at a narrow interval, and corresponding to the intermediate portion 7. Since the adhesive layer 10 is formed with a length that is approximately the same as the shoring flange width, when bending both ends of the intermediate portion 7 of the hanging body 4 to fit the flange 18a of the shoring 17, It is easy to bend, and since the part of the hanging body 4 that is hung on the inside of the support 17 flange 18a is the wide (large diameter) ring-shaped parts 6, 6, the hanging body 4 does not fit into the flange 18a. Therefore, the waterproof sheet 1 is reliably hooked and fixed to the shoring 17. Further, as described above, the adhesive layer 10 is formed to correspond to the intermediate portion 7 and has a width substantially equal to the flange width of the shoring 17, and it is through this adhesive layer that the mounting member 3 is adhered to the sheet main body 2. 10, both ends of the mounting member 3 in the length direction are not bonded to the sheet main body 2. Therefore, for example, when connecting one waterproof sheet 1 to another waterproof sheet 1, , when the sheet main bodies 2, 2 are too long, pull the sheet main body 2 toward the shoring 17 side, and also connect the pulled-up portion between the end of the hanging body 4 and the upper surface of the flange 18a of the shoring 17. It is very convenient because it can be held between the two waterproof sheets 1, 1, and the side edges of both waterproof sheets 1, 1 can be overlapped and the side edges can be connected well.

Furthermore, the waterproof sheet 1 is attached to the shoring 17 so as to cover the flange 18a from below, and there is no possibility that a gap will be formed at the part where the waterproof sheet is attached to the shoring 17 so that water can leak. , Water leakage from the ground side to the secondary lining concrete side is reliably prevented from occurring at this waterproof sheet attachment part.

Furthermore, the waterproof sheet 1 has water-permeable layers 5a and 5 at the center and both ends of the sheet main body 2, respectively.
b is formed, and the permeable layer 5b in the center is supported by the shoring 17
The permeable layer 5 at both ends is in contact with the flange 18a of the
Since a is in contact with the primary lining concrete 19, the spring water from the primary lining concrete 19 side flows through these permeable layers 5a and 5b, so the permeability of the spring water is good and there is a lot of spring water. By the way, it is also suitable for use. In particular, the water-permeable layer 5b in the center has an air release function, which is convenient. Furthermore, since the waterproof sheet 1 does not have a water-permeable layer formed between the inner surfaces of both flanges 18a and b of the shoring 17, the waterproof sheet 1 is used as the shoring 1.
7. Workability is very good when latching on.

10 to 12 show another embodiment of the present invention, in which the waterproof sheet 1 is continuous along the width direction at one end in the length direction of the other surface of the main body 2 of the impermeable base sheet. A first adhesive layer 22 is formed, and a second adhesive layer 23 that is continuous along the width direction is formed on one side of the main body 2 at the other end in the length direction, and the second adhesive layer 23 is formed on the other side of the main body 2. 1 Adjacent to the adhesive layer 22, a water-permeable layer 5a made of a water-permeable material such as a non-woven fabric is formed which is continuous along the width direction.
A water-permeable layer 5a made of a water-permeable material such as a similar non-woven fabric is formed on the other surface and continues along the width direction at a predetermined interval from the other end in the length direction. Further, on one surface of the main body 2, corresponding to the first adhesive layer 22 and one water permeable layer 5a, respectively,
A plurality of melt spot portions 11 are formed at predetermined distances from each other along the width direction. Note that release tapes 24 and 25 are laminated on the surfaces of the first and second adhesive layers 22 and 23, respectively.
As shown in FIG. 11, both ends 6, 6 in the longitudinal direction are wide, and the middle part 7, which is formed to have approximately the same length as the shoring flange width, is a narrow metal plate. An adhesive layer 1 is formed on one side of the sheet main body 2 at the center thereof corresponding to the intermediate portion 7.
It is fixed through 0.

The waterproof sheet 1 according to this embodiment is also used by bending both ends 6 of the hanging body 4 and hanging it on a shoring flange.
When connecting with other waterproof sheets 1, the first
As shown in FIG. 2, the release sheet 25 of the first adhesive layer 22 of one waterproof sheet 1 is peeled off, and this first
One end of the other surface of one waterproof sheet 1 in the longitudinal direction is overlapped with the other end of the other surface of the waterproof sheet 1' in the longitudinal direction via the adhesive layer 22, and the second end of the other waterproof sheet 1' Peel off the release sheet of the adhesive layer 23',
The second adhesive layer 23' of the other waterproof sheet 1' is on the inside (primary lining concrete 19 side) of the overlapping part.
Next, bend one waterproof sheet 1 so that the melt spot portion 11 is on the outside, and overlap one surface of the other waterproof sheet 1' with the other end in the longitudinal direction via its second adhesive layer 4'. It is something. Therefore, with this,
The overlapping part of one sheet 1 and another sheet 1' and the overlapping part of another sheet 1' are connected to the adhesive layer 22, The action of 23' brings them into close contact watertightly. Further, the water-permeable layer 5a of one waterproof sheet 1 and the water-permeable layer 5a' of the other waterproof sheet 1' are arranged adjacent to each other in contact with the primary lining concrete 19. In this state, fixing members 20 such as bolts and concrete nails are attached to the melt spot portion 1.
1 to the primary lining concrete 19. Therefore, the waterproof sheet of this example has very good water-stopping properties at the overlapped ends.

In addition, in the present invention, the shape of the hanging body 4 is not limited to the above-mentioned embodiment, and can be modified in various ways. For example, the hanging body 4 can be formed of a metal wire or a metal plate so that its entire length and width are approximately the same. In this case, although the embodiment shown in FIG. 5 uses one metal wire, two or more metal wires may be used. Further, in the above-described embodiment, the adhesive layer 10 was formed to correspond to the intermediate portion 7 and have approximately the same length as the shoring flange width, but the present invention is not limited to this.
Further, the water-permeable layer may be laminated over the entire surface of the main body of the sheet, and the formation of the water-permeable layer may be omitted in some cases. Furthermore, in the above embodiment, when fixing the waterproof sheet 1 to the inner peripheral wall of the primary lining concrete 19, the head 20a of the fixing member 20
Although the heat-melted heat-fusible material 21 is injected as a means of forming a coating covering the frame body 12, the present invention is not limited to this. Head 20 of member 20
Heat the area near a with a burner etc. to heat the heat-fusible material 14.
may be melted to fluidize the heat-fusible material 14 and cover the head 20a,
Alternatively, only the frame 12 may be provided as the melt spot section 11, and a heat-fusible substance may be supplied into the frame 12 during work.
It is also possible to use a washer 13 with a through hole and drive the fixing member through the hole in the washer, and instead of using a heat-fusible material, it is also possible to place the washer 13 inside the frame with the washer facing down. Water can be stopped by filling with an adhesive substance and the adhesive action of the adhesive substance on the fixing member. In this case, it is possible to omit the provision of a frame and form the adhesive layer directly on the main body of the sheet. Further, depending on the case, the waterproof construction using a heat-fusible material or an adhesive material may be omitted, and other configurations may be modified in various ways without departing from the gist of the present invention.

As explained above, the present invention is a waterproof sheet that is attached to the flange of a shoring made of H-shaped steel that is installed in a tunnel. and the length of the intermediate portion is formed to be approximately the same as the flange width of the shoring, and both lengthwise ends of the intermediate portion are provided with hanging bodies made of bendable metal wires or metal plates, respectively. Attach it to one surface of the main body of the water-permeable base sheet, bend both ends of the intermediate length of the hanging body integrally with the sheet main body, and attach the wide parts of both longitudinal ends of the hanging body to the flanges of the shoring. Since the tarpaulin sheet is configured to hang on the shoring, even if primary lining concrete is placed to bury a part of the shoring, the waterproof sheet can be easily and reliably attached to the shoring without any problems. Moreover, water leakage does not occur at the part where the waterproof sheet is attached to the shoring.

[Brief explanation of drawings]

Figure 1 is a partial cross-sectional perspective view showing the manner in which a waterproof sheet is installed in a conventional tunnel lining;
The figure is a schematic sectional view showing how a waterproof sheet is attached to a shoring structure made of H-shaped steel in a conventional manner. The figure is a sectional view showing an embodiment of the present invention, FIG. 5 is a plan view of a mounting member used in the embodiment, and FIG. 6 is an enlarged view of the mounting member attached to the main body of the seat. A partially omitted sectional view of the embodiment, Fig. 7 is similar to Fig. 4-
8 is a schematic sectional view showing a mode in which a waterproof sheet according to the same row is attached to a support; FIG. 9 is a partially omitted enlarged sectional view of the melt spot portion in the same mounting mode; Fig. 10 is a cross-sectional view showing another embodiment of the present invention, Fig. 11 is an enlarged plan view of a hanging body used in the same embodiment, and Fig. 12 is a partially omitted enlarged cross-section showing the attachment mode of the same embodiment. It is a diagram. 1... Tarpaulin sheet, 2... Sheet main body, 3...
Mounting member, 4... Hanging body, 5a, 5b... Water permeable layer, 11... Melt spot portion, 12... Frame body,
14... Heat-fusible substance.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A waterproof sheet that is attached to the flange of a support made of H-beam steel installed in a tunnel, which is wide at both longitudinal ends and narrow at the middle. and the length of the intermediate portion is formed to be approximately the same as the flange width of the shoring, and both lengthwise ends of the intermediate portion are provided with hanging bodies made of bendable metal wires or metal plates, respectively. attached to one surface of the main body of the water-permeable base sheet, and bending both ends of the intermediate length of the hanging body integrally with the main body of the sheet;
A waterproof sheet characterized in that the wide portions of the hanging body at both ends in the length direction are configured to be hung on the flanges of the shoring. 2. The waterproofing according to claim 1 of the utility model registration claim, in which a plurality of hooks are attached to substantially the center of one surface of the main body of the water-impermeable base sheet in the longitudinal direction at a predetermined distance from each other along the width direction. sheet. 3. The waterproof sheet according to claim 1 or 2 of the utility model registration claim, wherein a water-permeable layer is formed on the entire or part of the other surface of the main body of the water-impermeable base sheet. 4. The waterproof sheet according to claim 3 of the utility model registration, wherein a water-permeable layer is formed on both longitudinal ends of the other surface of the main body of the water-impermeable base sheet, each extending in the width direction. 5. The waterproof sheet according to claim 4, wherein a water-permeable layer is formed substantially in the center of the other surface of the main body of the water-impermeable base sheet in the width direction.