JPH0925796A - Sticking method for waterproof sheet and projection shaft for penetrating waterproof sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remarkably miniaturize a required device and improve workability. SOLUTION: A projection shaft 8 formed with a drilling punch 8b at the tip is protruded on the surface of an outer wall structure 3 to be stuck with a waterproof sheet S, then the surface of the outer wall structure 3 and the projection shaft 8 are covered with the waterproof sheet S, and part of the waterproof sheet S is pressed to the punch 8b at the tip of the projection shaft 8 to be bored. The projection shaft 8 is inserted into a bored through hole 14, and the projection shaft insertion portion of the waterproof sheet S is sealed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof sheet sticking method for sticking a waterproof sheet to, for example, a primary lining layer of a tunnel, and a protruding shaft for penetrating the waterproof sheet used therein.

[0002]

2. Description of the Related Art An apparatus for attaching a waterproof sheet to the surface of a primary lining layer made of, for example, primary lining concrete or segments in a tunnel is disclosed in Japanese Patent Application Laid-Open No. 5-2.
There is one disclosed in Japanese Patent No. 48189.

This device is fixed to the primary lining layer with nails or the like, and has an engaging member having a fixing member having a head and a groove capable of fitting with the head of the fixing member via a waterproof sheet. And the fitting surface of the head and the groove is tapered.

According to this device, the fixing member 1 is attached.
The inner surface of the next lining layer is covered with a waterproof sheet, and the groove portion of the engaging member is fitted to the head portion of the fixing member via the waterproof sheet from the inside thereof, whereby the waterproof sheet of the fixing member and the engaging member is formed. In addition to being able to be held between them, it is possible to fix the suspension rebar for the secondary lining concrete pouring to the engaging member.

[0005]

In the above-mentioned device, both the fixing member and the engaging member must be large in size in order to reliably sandwich the waterproof sheet between the fixing member and the engaging member. However, the weight of the device increases and the cost of the device as a whole increases.

Moreover, when a waterproof sheet is attached to a tunnel or the like, a considerable number of the above-mentioned devices are required, so that the influence thereof is extremely large.

Further, the fixing of the fixing member to the primary lining layer,
Since it is done with nails, workability was poor.

The present invention has been made in view of the above-mentioned problems, and can reduce the size of a required device remarkably, and also has a workable method of attaching a waterproof sheet and a protruding shaft for penetrating the waterproof sheet. Is intended to provide.

[0009]

According to the present invention, the above-mentioned problem is solved as follows. (1) After a projecting shaft having a punch for punching formed at the tip is projected on the surface of the outer wall structure to which the waterproof sheet is to be attached, the surface of the outer wall structure and the projecting shaft are covered with the waterproof sheet. A part of the waterproof sheet is pressed against a punch at the tip of the protruding shaft to make a hole, and the protruding shaft is inserted into the through hole, and then the protruding shaft insertion portion of the waterproof sheet is sealed.

(2) In the above (1), the waterproof sheet and the sealing material are sandwiched between the nut and the receiving plate screwed to the male screw portion formed on the protruding shaft, and the protruding shaft insertion portion of the waterproof sheet is inserted. Seal it.

(3) In the above item (1) or (2), a reinforcing rod for placing secondary concrete is joined to the tip of the protruding shaft.

(4) In any one of the above items (1) to (3), one end of the nut is screwed into a male screw portion formed at the tip of the protruding shaft, and the other end of the nut is made of a rebar. A male screw provided on the base end is screwed to support the reinforcing bar.

(5) In any one of the above items (1) to (4), the sealing material has a water-expandable rubber and a pressing plate that covers at least the side surface opposite to the waterproof sheet contact surface. To do.

(6) The salient shaft for penetrating a waterproof sheet used directly for carrying out the above-mentioned embodiment has a mounting portion to the surface of the outer wall structure at the base end portion, and has a tip portion for perforating the waterproof sheet. It is assumed that a punch is formed.

(7) In the above item (6), the base end portion is a male screw portion screwed into a screw hole formed in the surface of the outer wall structure.

(8) In the above (6), the substrate is fixed to the base end portion, and the substrate is fixed to the outer wall structure.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of the present invention (all claims) will be described below with reference to FIGS. 1 to 5 for the case of applying a waterproof sheet during tunnel construction. explain.

FIG. 1 is a vertical perspective view showing a situation in the middle of construction of a segment type tunnel.

Reference numeral (1) is a drill hole drilled in the ground (A), and is a concrete structure which is a large number of outer wall structures formed along the inner surface of the drill hole (1) so as to be curved in an arc shape in advance. The segments (hereinafter simply referred to as "segments") (3) are sequentially joined by bolts (not shown) or other appropriate joining means so as to form a substantially cylindrical shape as a whole, to form the primary lining layer (2). .

Mortar (4) is injected between the primary lining layer (2) and the inner surface of the drill hole (1), if necessary.

At appropriate places on the inner surface of each segment (3), in addition to a plurality of rectangular recesses (5) for connecting the segments (3) to each other by bolts, a recess having a nut (6) embedded in the bottom is formed. A hole (7) is formed. This recessed hole (7) and nut
Originally, (6) is the bolt of the transportation equipment for the segment (3).
It is for carrying the segment (3) by screwing (not shown) into the screw hole (6a) of the nut (6).

2 to 4 show that the segment (3) has a waterproof sheet.
It shows a process of attaching (S). Waterproof sheet (S)
In order to attach, the male screw part (8a) formed at the base end of the protruding shaft (8) is screwed into the screw hole (6a), and the protruding shaft (8) is attached to the segment (3). To project. This projecting shaft (8) is at least longer than the depth of the recessed hole (7), and as shown in the enlarged view of FIG.
A punch (8b) in which the opening edge of (9) has a knife edge shape is formed, and a male screw part is formed on the outer peripheral surface in a required range from the tip.
(8c) is drilled.

Reference numeral (10) is a closing plate which is at least larger than the opening surface of the recessed hole (7), and a through hole (11) is bored in the central portion thereof. It is possible to close the recessed hole (7) by passing the groove through the projecting shaft (8) and bringing the peripheral edge portion into contact with the inner surface of the segment (3).

(12) is a boss portion protruding to one side in the central portion
A disc-shaped receiving plate having (12a) and having a screw hole (13) formed inside thereof. Through-hole (1
After passing 1) through the protruding shaft (8), screw holes (13) of this receiving plate (12)
The closing plate (10) can be tightened so as to close the recessed hole (7) by screwing the screw into the male screw portion (8c) of the protruding shaft (8). At this time, the boss portion (12a) is directed toward the tip end side of the protruding shaft (8).

Thereafter, the waterproof sheet (S) is used to attach the segment (3).
The inner surface of the shaft is covered, but at the place with the recessed hole (7), the protruding shaft (8)
Since it protrudes inward, the tarpaulin is
(S) comes to rise in a mountain shape (Fig. 2).

When the top of such a waterproof sheet (S) is lightly tapped with, for example, a wood hammer (7) or the like, the waterproof sheet (S) becomes a salient shaft.
The punch (8b) of (8) is pressed to form the through hole (14). The waterproof sheet (S) is moved to the segment (3) side by passing the through hole (14) through the protruding shaft (8) as it is (FIG. 4).

Reference numeral (15) is a seal member, which is a cup-shaped presser having an outwardly facing flange (16a) at an opening edge portion open to one side and a through hole (16b) formed at the center. Board (1
6) and the through hole (16
A well-known water-expandable rubber in which a through hole (17a) matching with b) is formed
It consists of (17). The pressing plate (16) is made of water-expandable rubber.
(17) It may be a disk-shaped one that covers only one side surface.

The through hole (17a) of the water-expandable rubber (17) and the through hole (16a) of the holding plate (16) are successively inserted into the protruding shaft (8) to sequentially insert the holding plate (1).
After contacting the flange (16a) of 6) with the waterproof sheet (S),
About half of the screw hole (18a) inside the long nut (18) is screwed into the male screw part (8c) of the protruding shaft (8), and the seal member (15) is pressed against the waterproof sheet (S). As a result, the seal between the through hole (14) of the waterproof sheet (S) and the protruding shaft (8) is achieved, and the waterproof sheet (S) is held by the receiving plate (12) and the seal member (15). , The waterproof sheet (S) is securely attached to the segment (3). In addition, if necessary, a waterproof sheet (S)
Segment the other part with hook and loop fasteners, adhesive, etc.
It may be attached to the inner surface of (3).

Reference numeral (19) is a suspension rebar for placing concrete, which has an L-shaped tip and a male screw portion (19a) formed at the base end. ) The nut
By screwing into the remaining portion of the screw hole (18a) of (18), it is coupled to the tip end of the protruding shaft (8) via the nut (18). As shown in FIG. 4, another reinforcing bar (20) is attached to the hanging reinforcing bar (19), but the reinforcing bar (20) is directly fixed to the nut (18) as shown by an imaginary line in the figure. You may. After assembling these rebars (19) (20), a concrete formwork (not shown) is built further inward, and the formwork and the waterproof sheet.
Place secondary lining concrete between (S).

In this embodiment, the punch (8) formed at the tip of the protruding shaft (8) protruding from the primary lining layer (2) such as the segment (3)
Using b), a through hole (14) is formed in the waterproof sheet (S), and the through hole (14) is passed through the protruding shaft (8) as it is, so that the waterproof sheet (S) is positioned. , Waterproof sheet (S)
By sandwiching between the receiving plate (12) and the seal member (15), the penetrating portion of the protruding shaft (8) in the waterproof sheet (S) can be sealed, and the equipment used can be made significantly smaller and lighter. As a result, the cost can be kept low.

Further, since each member is fixed by using the screw hole and the male screw portion without using the nail, the work is easy. Furthermore, if the brackish water that has entered from the segment (3) side flows into the gap between the through hole (14) of the waterproof sheet (S) and the protruding shaft (8) and comes into contact with the water expansion rubber (10), The expansion rubber (10) expands to surely seal the gap between the through hole (14) of the waterproof sheet (S) and the protruding shaft (8), and further, the receiving plate (6) and the closing plate (10). ) Prevents the waterproof sheet (S) from falling into the recessed hole (7).

In this embodiment, the closing plate (10) for covering the recessed hole (7) is used, but it may be omitted. Even in this case, the waterproof sheet (S) has a receiving plate. (12) is prevented from falling into the recessed hole (7). Recessed hole (7)
There is also one in which the screw hole (6a) of the nut (6) is exposed directly to the inner surface of the segment (3) without providing the nut (6). In such a case, it is not necessary to omit the closing plate (10). Needless to say.

Next, a second embodiment in which the present invention (the invention of claims 1, 3 to 6 and 8) is applied to the construction of an underground structure of a building will be described with reference to FIG.

In this embodiment, a supporting work, that is, a plurality of H-shaped steels (21) are driven into the ground (22) at a required interval, and a horizontal sheet pile (2) is used as an earth stopper between adjacent H-shaped steels (21).
While putting 3), excavate to the required depth.

Next, a punch (24a) similar to that of the first embodiment is formed at the tip of the H-shaped steel (21) (or the horizontal sheet pile (23)) which is the outer wall structure, at the proper place on the surface. The substrate (25) to which the base end portion of the protruding shaft (24) is fixed by welding or the like is fixed by welding, an adhesive, or other means. Projection shaft of this embodiment (24)
Has a male screw portion (24b) formed on almost the entire outer peripheral surface thereof.

Next, on the surface of the H-shaped steel (21) and the side sheet pile (23) provided with the protruding shaft (24), a cloth material (26) for forming a water passage for the brackish water and a waterproof sheet (S). ) And their protruding axes (2
As in the case of the first embodiment, the portion covering the tip of 4) is lightly tapped with a wooden stick or the like to give a cloth material (26) and a waterproof sheet.
A through hole (27) is formed in (S).

After passing the protruding shaft (24) through the through hole (27), the seal member (28) is passed through the protruding shaft (24) as in the first embodiment.
Then, after that, attach the nut (29) to the male screw part (24b) of the protruding shaft (24).
Screw it onto the cloth (2) between the board (25) and the nut (29).
6) Insert the waterproof sheet (S) and the seal member (28) and tighten them to fix them.

Thereafter, as in the first embodiment, the nut (29) is screwed onto the male screw portion (30a) of the suspension bar (30),
Support the hanging rebar (30).

The above-mentioned cloth material (26) is usually a non-woven fabric or a woven cloth, which are more difficult to cut than the waterproof sheet (S),
By using the punch (24a) provided on the protruding shaft (24),
The through hole (27) can be easily formed.

Even in the case of the second embodiment, the same operation and effect as in the case of the first embodiment can be obtained.
In addition, in the first embodiment, the screw holes (6
If a) is not provided, it is preferable to provide a substrate at the base end portion of the protruding shaft and fix the substrate to the segment (3) as in the second embodiment.

[0041]

According to the present invention, the following effects can be obtained. (a) By using a punch provided on the protruding shaft, it is possible to easily form a through hole with a clean cut portion at an arbitrary portion of the waterproof sheet, so that the waterproof sheet is not cracked from the through hole portion. It is unlikely to occur, and the penetration portion of the protruding shaft in the waterproof sheet can be easily sealed (Claim 1).

(B) The waterproof sheet can be inserted into the through hole at the same time when the through hole is formed in the waterproof sheet by the punch, and the workability is good (claim 1).

(C) The protruding shaft and the seal member can be remarkably reduced in size and weight as compared with the above-mentioned conventional device, and the cost can be reduced (Claim 1).

(D) With the structure as in the second aspect of the invention, the portion of the waterproof sheet penetrating the protruding shaft can be easily and surely sealed.

(E) With the structure as claimed in claim 3, the reinforcing bars for secondary concrete pouring can be reliably supported, and the supporting parts of the reinforcing bars come off during secondary concrete pouring. There is no risk of misalignment or displacement.

(F) With the structure as claimed in claim 4, the support of the reinforcing bar is further ensured, and a single nut is used for both tightening the sealing material and connecting the reinforcing bars. It is convenient and convenient.

(G) With the structure of the fifth aspect of the invention, it is possible to easily and reliably seal the protruding shaft penetrating portion of the waterproof sheet.

(H) According to the invention as defined in claim 6, the salient shaft can be easily attached to the surface of the outer wall structure not only when constructing a tunnel but also when constructing an underground structure of a building. Thus, the work of attaching the waterproof sheet can be easily performed.

(I) According to the configuration of the invention as defined in claim 7, particularly in the segment type tunnel construction, the projecting shaft is utilized by utilizing the screw hole for transporting the segment formed in the inner surface of the segment. Is convenient because it can be attached to the segment.

(J) With the structure according to the invention described in claim 8, the protruding shaft can be easily attached to the outer wall structure having no screw hole.

[Brief description of drawings]

FIG. 1 is a longitudinal perspective view of a main part showing a situation in the middle of construction of a segment type tunnel which is a first embodiment of the present invention.

FIG. 2 is a vertical cross-sectional side view of essential parts showing a state in which a salient shaft is likewise attached to a segment and an inner surface thereof is covered with a waterproof sheet.

FIG. 3 is a vertical sectional side view showing a state in which a through hole is also formed in the waterproof sheet.

FIG. 4 is a vertical cross-sectional side view showing a state in which a reinforcing bar is also attached to the salient shaft.

FIG. 5 is an enlarged perspective view showing an example of a protruding shaft of the same.

FIG. 6 is a longitudinal perspective view of a main part showing a state in the middle of construction of an underground structure which is a second embodiment of the present invention.

[Explanation of symbols]

 (A) Ground (S) Waterproof sheet (1) Excavation hole (2) Primary lining layer (3) Concrete segment (segment) (outer wall structure) (4) Mortar (5) Recess (6) Nut (6a) ) Screw hole (7) Recessed hole (8) Projection shaft (8a) Male screw part (8b) Punch (8c) Male screw part (9) Bottom hole (10) Closure plate (11) Through hole (12) Receiving plate ( 12a) Boss (13) Screw hole (14) Through hole (15) Seal member (16) Holding plate (16a) Flange (16b) Through hole (17) Water expansion rubber (17a) Through hole (18) Nut (18a) ) Screw hole (19) Suspended rebar (19a) Male thread (20) Reinforcing bar (21) H-shaped steel (outer wall structure) (22) Ground (23) Cross sheet (24) Projection shaft (24a) Punch (24b) Male thread (25) Board (26) Cloth (27) Through hole (28) Seal member (29) Nut (30) Suspended rebar (30a) Male thread

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takashi Iizaka 3-3-6 Minamimagome, Ota-ku, Tokyo (72) Inventor Akihiko Saito 3-32-47 Azamino, Aoba-ku, Yokohama

Claims (8)

[Claims] 1. A waterproof sheet, comprising: a projection shaft having a punch for punching formed at its tip on the surface of an outer wall structure to which a waterproof sheet is to be attached; and thereafter, the surface of the outer wall structure and the projection shaft. A part of the waterproof sheet is pressed against a punch at the tip of the protruding shaft to make a hole, and the protruding shaft is inserted into the through hole, and then the protruding shaft insertion part of the waterproof sheet is sealed. A method of attaching a waterproof sheet, characterized by: 2. A waterproof sheet and a sealing material are sandwiched between a nut and a receiving plate screwed to a male screw portion formed on the salient shaft to seal the salient shaft insertion portion of the waterproof sheet. The method for attaching the waterproof sheet according to claim 1. 3. The reinforcing rod for placing secondary concrete is connected to the tip of the salient shaft.
How to attach the described waterproof sheet. 4. A rebar is formed by screwing one end of a nut into a male screw formed on the tip of a protruding shaft, and screwing into the other end of the nut a male screw provided at the base of the rebar. The method for attaching the waterproof sheet according to claim 1, wherein the waterproof sheet is supported. 5. The waterproof sheet according to any one of claims 1 to 4, wherein the sealing material has water-expandable rubber and a holding plate that covers at least a side surface of the rubber sheet that is opposite to the waterproof sheet contact surface. How to paste. 6. A waterproof sheet penetrating salient shaft having a base end portion for attaching to the surface of an outer wall structure and a tip portion formed with a punch for punching a waterproof sheet. 7. The protruding shaft for penetrating a waterproof sheet according to claim 6, wherein the base end portion is a male screw portion screwed into a screw hole formed in the surface of the outer wall structure. 8. A protruding shaft for penetrating a waterproof sheet according to claim 6, wherein a substrate is fixed to the base end portion, and the substrate is fixed to the outer wall structure.