JP4920195B2 - Water stop plate and water stop method - Google Patents

Description

The present invention relates to a waterstop及beauty waterproofing method.

  In waterways or pipes such as intake channels such as power plants, cracks may occur in earthquake-resistant joints that connect concrete frames, and water leakage may occur from these cracks.

  If a crack occurs in an earthquake-resistant joint, etc., if the earthquake-resistant joint is removed and replaced with a new one, the water pressure may be released and water may be discharged during removal.

An object of the present invention is to provide a waterproofing Ita及 beauty waterproofing method capable of stopping water to easily close the crack.

The present invention, in a first aspect, is inserted in a folded state from the outer wall surface of the crack to the inner wall surface of the crack where the internal pressure of the fluid acts from the outer wall surface of the crack, A water stop plate configured to receive an internal pressure to make a surface contact with the inner wall surface and be crimped to the inner wall surface to close the crack, and the water stop plate is arranged along a surface direction. Providing a water stop plate that is formed in a tapered shape so that the thickness decreases from the central portion toward the peripheral portion.

In the second aspect , the present invention folds a water stop plate having flexibility or elasticity, and inserts the folded water stop plate from the outer wall surface of the crack toward the inner wall surface of the crack where the internal pressure of the fluid acts. Then, the water stop method is provided, wherein the water stop plate receives the internal pressure inside the crack, comes into surface contact with the inner wall surface, and is crimped to the inner wall surface to close the crack.

(1) According to the present invention, by using a water stop plate having flexibility or elasticity, the water stop plate can be directly inserted into the crack, so that the water stop plate is bypassed from a place other than the crack. Compared with the case of moving just below the crack, the water can be stopped quickly and easily without using a special device for inserting the water stop plate.
(2) According to the present invention, the water stop plate having flexibility or elasticity is automatically pressed against the crack inner wall surface by the internal pressure of the fluid, that is, the pressure acting from the crack inner wall surface side toward the outer wall surface side. Therefore, even if the internal pressure is high, the water stopping ability is improved.
(3) According to the present invention, the flexible water stop plate is automatically pressed against the crack inner wall surface by the internal pressure of the fluid, that is, the pressure acting from the crack inner wall surface side toward the outer wall surface side. Compared to the case where the water stop plate is fixed on the outer wall surface side of the crack, fixing of the water stop plate is not required and the fixing of the water stop plate is simple.

  The water stop plate is formed in a taper shape so that the thickness is reduced from the central portion toward the peripheral portion along the surface direction, thereby increasing flexibility and facilitating insertion into a crack. .

  The water stop plate is formed by laminating a plurality of water stop plates that can be separated from each other in the thickness direction, thereby adjusting the thickness and size of the water stop plate according to the depth and size of the crack. Can do.

  The plurality of stacked water stop plates are engaged with each other by unevenness, so that it is easy to adjust the thickness and size by separating the water stop plates according to the shape of the crack, and the water stop Sometimes the bond between the plurality of water blocking plates stacked is enhanced.

The water stop device according to the embodiment of the present invention includes an insertion jig that is inserted from the outer wall surface of the crack toward the inner wall surface of the crack where the internal pressure of the fluid acts, and is attached to the insertion jig and is flexible. The inner wall surface of the crack is folded from the outer wall surface toward the inner wall surface, and the inner pressure is received and brought into surface contact with the inner wall surface to be crimped to the inner wall surface. And a water stop plate according to the present invention configured to be capable of closing the crack.
The insertion jig has a tip the waterstop is inserted inside the crack is supported, the tip portion is formed at a portion located outside of the cracks in a state of being inserted into the crack, said A threaded portion in which a mounting hole formed in the water stop plate is fitted so that the water stop plate is supported by the tip portion, and the water stop device is a member in which the crack is generated. After having inserted the water stop plate into the crack by having a nut screwed into the threaded portion for locking to the threaded portion, the insertion jig is used for the cracked member or the like using the threaded portion. Can be locked.

  The water stop device includes one or a plurality of predetermined sheets that cover the crack after the water stop plate has closed the crack, and a shape similar to the member in which the crack has occurred, And a protective cover for sandwiching the sheet with the member.

  An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is an explanatory view of a water stop plate and a water stop device using the same according to one embodiment of the present invention. Referring to FIG. 1, a water stop device using a water stop plate according to an embodiment of the present invention includes an insertion jig 1 that is inserted from a crack outer wall surface toward an inner wall surface on which an internal pressure of fluid acts. , Being attached to the insertion jig 1 and having flexibility or elasticity, being inserted into the crack in a state of being folded from the outer wall surface side of the crack, and spreading on the inner wall surface side of the crack, And a water stop plate 2 configured to be able to receive and come into surface contact with the inner wall surface and be crimped to the inner wall surface to block the crack.

  The water stop plate 2 is formed by laminating a plurality of water stop plates 2a, 2b, and 2c that can be separated from each other along the thickness direction. A mounting hole 1d is formed at the center of the plurality of water blocking plates 2a, 2b, 2c, and is fitted into the screw portion 1b of the insertion jig 1 via the mounting hole 1d. In a state where it is supported on the back surface, it is attached by clamping or an adhesive.

  The plurality of stacked water stop plates 2b and 2c are engaged with each other by the unevenness 3 to facilitate separation of the water stop plates 2b and 2c, and the plurality of stacked water stop plates at the time of water stop. The coupling between the plates 2b and 2c is enhanced.

  The water stop plate 2 is formed in a tapered shape so that the outer diameters of the plurality of water stop plates 2a, 2b, and 2c increase in order so that the thickness decreases from the central portion toward the peripheral portion along the surface direction. Being done.

  The insertion jig 1 is inserted into the inside of the crack, and a tip portion 1a to which the waterstop plate 2 is supported or attached, and a portion positioned outside the crack with the tip portion 1a inserted inside the crack. It has a threaded portion 1b formed and fitted with a water stop plate 2 and a handle portion 1c held at the time of insertion. The insertion jig 1 is formed so as to be cuttable, and a nut 4 can be screwed into the screw portion 1b.

  Next, the construction example which used the water stop apparatus demonstrated above for the water stop of the crack which generate | occur | produced in the earthquake-resistant joint is demonstrated. FIG. 2 shows a construction example in which the water stop device shown in FIG. 1 is used to stop a crack generated in an earthquake-resistant joint. 3A to 3F are process diagrams of the construction example shown in FIG.

  Referring to FIGS. 2 and 3A, when a crack occurs in the M-shaped seismic joint 10 connected between the concrete frames above the joint, the installer The water stop plate 2 is attached and inserted into a crack generated in the earthquake-resistant joint 10 that has expanded due to the internal pressure (water pressure) of the fluid. The water stop plate 2 is automatically pressed against the inner wall surface of the crack by the internal pressure inside the crack.

  Referring to FIG. 3 (B), the installer secures the locking of the insertion jig 1 to the seismic joint 10 by screwing the nut 4 into the screw portion 1b shown in FIG. Cut the length.

  Referring to FIGS. 3C to 3D, the installer adheres the protective sheet 5 and then the reinforcing sheet 6 to the earthquake-resistant joint 10, and further applies a rubber-based filler 8.

  Referring to FIG. 3 (E), a holding cover 7 having a shape similar to that of the earthquake-resistant joint 10 is put on the reinforcing sheet 6 and bonded, and the whole is pushed inward. As a result, the tip 1a (see FIG. 1) of the insertion jig 1 is inserted into the joint between the earthquake-resistant joints 10, and the water stop plate 2 closes the gap between the tip 1a and the joint opening, Water stoppage is ensured.

  A water stop test was performed using the water stop device according to the embodiment of the present invention described above. The test conditions are as follows.

Seismic joint: t = 14;
Insertion jig: SUS304 screw part M4;
Water-stopping rubber: Chloroprene-based synthetic rubber, central hole φ14, three-layer outer diameter φ30, 52, 75, t = 5;
Protective sheet: Chloroprene-based synthetic rubber;
Reinforcing sheet: synthetic rubber + reinforcing fiber;
Adhesive: Rubber-based resin adhesive Filler: Polybutadiene-based adhesive-2 liquid type Holding cover: SUS304.

  Under the above test conditions, a water pressure of 0.1 MPa was applied as the internal pressure of the fluid and left for 26 days, but water leakage did not occur. Further, when the holding cover was removed, the filler had elasticity and was good without being peeled off from the reinforcing sheet and the protective sheet.

  Furthermore, when the tensile test (tensile to the left-right direction in FIG. 2) of the earthquake-resistant joint was performed, there was no peeling of each sheet up to a tensile load of 3.45 kN. This is considered to be because the followability of each sheet and the like is improved by covering the protective cover having the same shape as the seismic joint.

The water stop plate of the present invention, the water stop device and the water stop method using the same , in addition to repairing the crack of the earthquake-resistant joint, the internal pressure of the fluid such as gas and liquid in various water channels, gas pipes and other pipes Applies to repairing cracks at such locations. For example, when a crack occurs in the pipe, if the water stop plate is directly inserted into the crack, the water stop plate is automatically pressed against the inner wall surface of the pipe by the pressure in the pipe, and water stop can be performed.

It is explanatory drawing of the water stop board which concerns on one Example of this invention, and the water stop apparatus using the same . It is the construction example which used the water stop apparatus shown in FIG. 1 for the water stop of the crack which generate | occur | produced in the earthquake-resistant joint. (A)-(F) are process drawings of the construction example shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Insertion jig 1a Tip part 1b Thread part 1c Handle part 2 Water stop plate 2a Lower water stop plate 2b Intermediate water stop plate 2c Upper water stop plate 2d Mounting hole 3 Concavity and convexity 4 Nut 5 Protection sheet 6 Reinforcement sheet 7 Holding cover 8 Filler 10 Seismic joint

Claims (4)

It is flexible or elastic and is inserted in a folded state toward the inner wall surface of the crack where the internal pressure of the fluid acts from the outer wall surface of the crack, and is in surface contact with the inner wall surface under the internal pressure A water stop plate configured to be crimped to the inner wall surface to close the crack,
The water stop plate is formed in a taper shape so that the thickness decreases from the central portion toward the peripheral portion along the surface direction.   The waterstop plate according to claim 1, wherein the waterstop plate is formed by laminating a plurality of waterstop plates separable from each other along a thickness direction. The waterstop plate according to claim 2 , wherein the laminated waterstop plates are engaged with each other by unevenness.   Folding the water stop plate having flexibility or elasticity, inserting the folded water stop plate from the outer wall surface of the crack toward the inner wall surface of the crack where the internal pressure of the fluid acts, and the water stop plate inside the crack A water-stopping method, wherein a plate receives the internal pressure, comes into surface contact with the inner wall surface, presses against the inner wall surface, and closes the crack.

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