JPS6329039Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is intended to provide a water stop device for H-shaped supports in tunnel water stop construction methods.

The following problems can be pointed out in the conventionally provided devices of this kind.

Conventionally, the joint plates of H-shaped shoring were fitted with metal fittings impregnated with a waterproofing agent from below to prevent water leakage from the joint plates, but as the joint plate was fixed from the bottom, it was natural that Water infiltrates from above, requiring complete fixation, and water can infiltrate through even the slightest gap.
In addition, although the joint plate is fixed with bolts, these bolts do not have seals, etc., and if the bolts loosen due to movement of the ground, even if water leakage is completely prevented from below, Water enters through the bolt holes in the joint plate. Also, the edge 5 of the water stop sheet 5 fixed to the upper flange 4C portion of the H-shaped shoring 4
A has a structure in which a core 5B made of urethane foam or a rubber pipe is enclosed in this folded part. However, this core is for protecting the sheet 5 when the water stop sheet is fixed to the upper flange 4C using the fixing fitting 4D. Therefore, it is only the water stop sheet that comes into contact with the upper flange, so if iron rust, sand, or pebbles adhere to the above-mentioned shoring, or if the fixing fittings are not installed properly, the water stop sheet and shoring may be removed. There will be a gap between the pipe and the pipe, and water will leak from this part.

The present invention is intended to fully solve this problem, and one embodiment thereof will be described in detail below with reference to the drawings.

Reference numeral 1 denotes a water stop device for the H-shaped support in the proposed tunnel, which consists of a top end cover 2 and a water stop sheet 3. Therefore, the top end cover 2 has elasticity on the bottom surface of the narrow plate-shaped top cover 2A that is to come into contact from above with the top end surface of the top plate 4A, which becomes the joint plate 4' of the H-shaped shoring 4. A waterproof foam material 2B having elasticity and adhesiveness is attached, and front and rear tongue-shaped pieces 2 are attached to both ends of the upper cover to be in contact with the front and rear surfaces of the top plate.
A rubber band 2E to be hung around the lower surface of the top plate 4A is provided at the tip of the tongue-like piece 2C, and this rubber band is attached to the tongue-like piece 2D. It is configured to be detachable. In addition, the water stop sheet 3 is applied to the shoring pitch 4B in the H-shaped shoring 4, 4 standing parallel to the plane.
A waterproof foam material 3E having elasticity and adhesiveness that should come into contact with the lower surface of the upper flange 4C of the shoring 4 is attached to the upper surfaces of the front and rear edges 3C and 3D of the water-stop sheet body 3A formed accordingly. A notch 3F corresponding to the top plate 4A, which becomes the joint plate portion of the shoring 4, is formed at a predetermined position on the front and rear edges of the water stop sheet body 3A, and the notch 3F has a corresponding notch. A hanging piece 3G is installed in a row along the
G' is attached. The water-stopping/joint material made of the waterproof foam material having elasticity and adhesiveness may be selected from the following known materials.

Example 1 ~ Based on soft polyurethane foam,
A foam-type water-stopping/joint material impregnated with a water-stopping agent mainly made of asphalt, special synthetic resin, and synthetic rubber. (Trademark~Askutsion・
Evercushion - Bridgestone Corporation) Example 2 - Water-stopping/joint material made by soaking open-cell foam material with adhesive. (Registered Trademark - Compliform Compliband - Nittobo Compound Co., Ltd.) Next, how to use the proposed product will be explained along with its effects.

After attaching the cover 2 to the H-shaped support 4, the sheet 3 is stretched. That is, the tongue-shaped piece of the cover is folded into a substantially vertical state as shown in FIG. 7, and the cover 2A is fitted from above to the joint plate portion 4' so that the cover 2A is positioned on the top surface of the top plate. The rubber band 2E is wrapped around the bottom surface of the plate 4A, and the ring body 2E' at the tip of the rubber band is attached to the tongue-shaped piece 2.
It locks onto the hook 2D' provided at the lower end of D. As a result, the waterproof foam material 2B is in close contact with the upper surface and front and rear surfaces of the joint plate portion, thereby preventing water from entering. In this case, the work of installing the cover is simple and reliable since it is sufficient to cover the top plate from above and secure it with a rubber band. Also,
As shown in FIGS. 13 and 14, the sheet 3 is stretched so that the hanging pieces 3G sandwich the top plate 4A, and the waterproof foam material 3E is attached to the upper flange 4.
Arrange it so that it comes into contact with the bottom surface of C. In this case, in order to fix the hanging piece to the top plate 4A, the first
It is preferable to use the fixing metal fittings 6. Therefore, this metal fitting 6 is formed by folding an angle member into a flat shape so as to abut from below the connecting part between the upper flange 4C and the top plate 4A of the above-mentioned shoring. A presser arm 6C to be in contact with the front and rear surfaces of the top plate is connected to the upper flange side contact portion 6D of the presser piece 6A.
A vertical bar 6E is connected to the upper surface of the lower flange 4E of the shoring. Furthermore, in order to fix the waterproof foam material 3E to the lower surface of the upper flange 4C, it is fixed with a second fixing fitting 7 as shown in FIG.
Therefore, in this metal fitting 7, a corrugated presser piece 7B is fixed horizontally to the upper end surface of the vertical bar 7A. The metal fitting 7 is used by bringing the lower end of the vertical bar 7A into contact with the lower flange 4E, and pressing the waterproof foam material 3E of the sheet 3 against the upper flange from below using the presser piece 7B. In this case, using a presser plate 7C having the same cross section as the presser piece 7B allows for more reliable locking.

According to this proposal, the joint plate part of the shoring consists of the cover 2, the hanging piece 3G, and the foam material 3.
G′, and other parts are foamed material 3E
It can be said that this is a useful device that can solve all the problems pointed out at the beginning.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Fig. 1 is a front view of the H-shaped shoring, Fig. 2 is an enlarged sectional view taken along the line A-A of the same, Fig. 3 is a perspective view of the water stop sheet, and Fig. 3 is a perspective view of the water stop sheet. Figure 4 is an enlarged sectional view taken along line B-B of the same as above, Figure 5 is a plan view of the top end cover, Figure 6 is a sectional view taken along line D-D of same as above, Figure 7 is a front view before installation, and Figure 8 is a sectional view taken along the line C-C in Figure 5, Figure 9 is a perspective view showing the installed state of the top end cover, Figure 10 is an enlarged sectional view taken along the line E-E of the same, and Figure 11 is the top view. A front view of the end, FIG. 12 is a plan view, FIG. 13 is an enlarged perspective view of the main part of the water stop sheet, FIG. 14 is a perspective view illustrating attachment of the water stop sheet to the top end, and FIG. 15 16 is a front view showing the installed state of the top end cover and waterstop sheet, FIG. 16 is a plan view with a part of the same as above omitted, FIG. 17 is a perspective view of the first fixing fitting, and FIG. 18 is a perspective view of the second Perspective view of fixing fittings,
FIG. 19 is a perspective view of a conventional waterstop sheet, and FIG. 20 is a longitudinal sectional view illustrating a conventional method of use. 1...Water stop device, 2...Top end cover, 3...
...Water stop sheet.

Claims (1)

[Claims for Utility Model Registration] A water stop device for H-shaped shoring in a tunnel, characterized by comprising a top end cover 2 and a water stop sheet 3 having the following conditions. B The above-mentioned top end cover 2 has elasticity and adhesiveness on the lower surface of the narrow plate-shaped top cover 2A that should come into contact from above with the top end surface of the top plate 4A, which is the joint plate of the H-shaped shoring 4. A waterproof foam material 2B having a waterproof property is attached, and front and rear tongue-shaped pieces 2 are attached to both ends of the upper cover to be in contact with the front and rear surfaces of the top plate.
A rubber band 2E to be hung around the lower surface of the top plate 4A is provided at the tip of the tongue-like piece 2C, and this rubber band is attached to the tongue-like piece 2D. be configured to be detachable. (b) The water stop sheet 3 is placed on the upper surface of the front and rear edges 3C, 3D of the water stop sheet body 3A, which is formed in accordance with the support pitch 4B of the H-shaped supports 4, 4 standing parallel to the plane. A waterproof foam material 3E having elasticity and adhesiveness to be in contact with the lower surface of the upper flange 4C in 4 is attached, and joint plate portions of the shoring 4 are attached at predetermined positions on the front and rear edges of the water stop sheet body 3A. A notch 3F corresponding to the top plate 4A is formed, and a hanging piece 3G along the notch is connected to this notch 3F, and a waterproof foam material 3G is formed on the inner surface of this hanging piece 3G. ' must be attached.