JPH01284640A - Water stop plate - Google Patents

Abstract

PURPOSE:To always retain high water-stopping performance by forming a thick engaging portion at each of the lateral ends of a strip-shaped water stop plate and providing a water stop portion to the outside of the engaging portion. CONSTITUTION:A strip-shaped water stop plate 3, which is to be laid along a seam 2 between concrete structures 1, is formed of elastomer. A thick engaging portion 6 is then formed at or near each of the lateral ends of the strip- shaped water stop plate 3. A water stop portion 7 is also provided to the farther side of the engaging portion 6 on each side of said water stop plate 3. If a tensile force is exerted on the water stop plate 3 due to a slippage between the concrete structures 1, the tensile load is born by the engaging portion 6 with the result that the water-stopping performance of the water stop portion 7, which is located to the outside of the engaging portion 6, is hardly affected.

Description

DETAILED DESCRIPTION OF THE INVENTION tth Example Goho 11 The present invention relates to a water stop plate that is attached along a concrete joint in a concrete structure and prevents water from entering through the joint.

[U.S.] When water enters the joints of a concrete structure, water leaks can occur inside tunnels, buildings, etc., for example.

As an effective method for preventing this water leakage, a method of burying a band-shaped water stop plate along the seam is widely adopted.

The water stop plate is often made of vinyl chloride, and is also made of elas 1 hemer made of vulcanized rubber, unvulcanized rubber, etc. A conventional general water stop structure using such a water stop plate is shown in Figs. 11 and 11. It is illustrated in FIG.

01 is concrete 1 to structure, left and right concrete 1
A seam 02 is formed between the structures 01, and a band-shaped water stop plate 03 is formed on the surface S of the structure 01.
It is buried along the pouring seam 02 parallel to C.

The band-shaped waterstop plate 03 has a hollow cylindrical portion 04 with projections formed in the longitudinal direction on both sides of the medium flame, and a hollow cylindrical portion 04.
The same cylindrical part 04. The water stop plate 03 (well, the cylindrical part 04 Concrete 1
~The thin plate part 05 is sandwiched between the joints 02 of the structure 01]
It is embedded in both concrete structures 01 parallel to the surface S of the concrete structures 1 to 01.

Normally, even if there is a slight relative shift between the two concrete structures, the cylindrical part 04 will be mainly deformed flexibly and the thin plate part 05 will not be affected much. Part 05 Do 2:) Cree 1 ~ Structure 0
1.Which part is closely covered in 11?
Water was cut off at least at the engaging portions 06 on both sides.

1 - But both concrete 1 and #4 structure 0? tf! If a larger relative shift occurs in l, for example, if the ground has shifted significantly due to earthquakes, a problem will arise in water-stopping performance.

If we consider a case where both the concrete 1 and the concrete structure 01 deviate greatly in the direction of -1 from each other, the water stop plate 03 grips the engaging portions 06 on both sides as shown in Fig. 12. The central cylindrical portion 04 is distorted into a flattened state, and the thin plate portions 05 on both sides are also pulled to the right, making the wall thickness even thinner, and the engaging portions 06-b on both sides are bent to the center. The A9 flesh plate part 05 is pulled into the space of the concrete I-structure 01 in which it was buried and is reduced in size, receiving a strong tensile load.

Since only the reduced portion of the engaging portion 06 comes into close contact with the concrete structure 1 to the oak structure 01, 4) the water that has entered from the joint o2 will be able to penetrate between the thinned thin plate portion o5 and the concrete structure 01. Further, the water penetrates into the engaging portion 06 and the concrete 1, and the water is stopped only at the part where the old structure comes into close contact with the engaging portion 06, and the water-stopping property is reduced in a state where the water-stopping contact area is extremely small.

If the deviation width between the concrete 1 and the structure 01 varies depending on the location, the rate of reduction of the engaging portion 06 also varies depending on the location. It can happen easily.

Also, if a tensile load is applied to the water stop plate 03 for a long time,
There is a risk that the elasticity will be relaxed and the contracted state of the engaging part 06 will change to the normal state, and after the gap between the concrete 1 and the structure 01 has returned, there will be a gap between the engaging part 06 and the concrete 1 to the structure 01. It is possible that this could be the cause of water leakage.

The present invention has been made in view of these points, and its purpose is to provide a water stop portion on the outside of both engaging portions so that the water stop is always high. It has a water stop plate that can maintain water content.

In other words, the present invention provides a band-shaped water stop plate attached along the pouring joint of a concrete structure, in which the water stop plate main body is made of an elastomer, and the water stop plate body is formed in a thick engagement portion on or near both sides in the width direction. (with water stop parts installed on the outside of the engaging parts on both sides)
It is a water stop plate.

When a relative shift occurs in the concrete structure and quantity on both sides of the pouring joint, a tensile load is applied to the engaging parts on both sides, and the inside part shrinks, but the outside part is not affected much, and a water stop part is created in the part that is not affected. Since the water stop part is provided with a water stop part, the water stop property is always maintained, and even if water that enters from the pouring seam enters along the surface of the thin strip part, it will be almost completely blocked at the water stop part, and subsequent water will be blocked. can prevent the infiltration of

FU-RI-1 An embodiment according to the present invention illustrated in FIGS. 1 and 2 will be described below.

The center portion of the band-shaped water stop plate 3 according to this embodiment is located at the pouring seam 2 of the left and right concrete structures 1, and the left and right body portions are respectively embedded in both concrete structures 1.

The main body of the water plate 3 is made of an elastomer such as vulcanized rubber, and has a cylindrical part 4 in the center, and thin plate parts 5 extending to the left and right from the cylindrical part 4J. Engaging portions 6 with thicker walls are formed on both sides of the engaging portion 6 .

A thin plate portion 7 having approximately the same wall thickness as the thin wall portion 5 extends further outward from the engaging portion 6, and a small protrusion 8 is formed on the edge of the thin plate portion 7.
is formed.

The water stop plate 3 has a symmetrical shape both vertically and horizontally in FIG. 9 is attached.

The water stop plate 3 according to this embodiment has a J-shape structure, and the cylindrical part 4 flexibly deforms to cope with the normal deviation between the two concrete structures 1, and Water that has entered through the thin plate portion 5 is stopped by the close contact portion of the thin plate portion 5 between the concrete 1 and the structure 1 or the close contact portion of the engagement portion 6 with the concrete structure.

When the relative displacement between the two concrete structures 1 is large due to ground changes, etc., if we consider ``C'', the structure 1 will shift to both concrete structures 1 as shown in Figure 2. If it deviates by a considerable distance in the direction of moving away from the
, 1, and the thin plate portion 5 receives the tension 141 (thickness J9 is widened).

Therefore, the engaging part 6 is pulled toward the center on the thin plate part 5 side, the upper and lower surfaces become tapered, and a part of the engaging part 6 is drawn into the space of the concrete structure 1 where the thick plate part 5 was located. .

However, the tensile force passing through the thin plate part 5 is received by the engaging part 6, and the thin plate part 7
Since the wall thickness of the RD wall plate part 7 is maintained and the water expansion aVl attached to the bank surface is affected by The compressive reaction force against water is also maintained at all times, and water-stopping properties are maintained.

Like this, water bulge, 11! l] Even if Nishirus 1~mer does not generate water expansion pressure, the outer side of the engaging part 6J maintains a firm water-stopping property, but 4] Joint [12
When the water that has entered further advances along the thin plate portion 5 and further exceeds the engaging portion 6 and reaches the water-swollen Ex1 to Mer9, the water-swollen Ex1 to Mer9 expand and this expansion pressure This further increases water-stopping properties.

In addition, water expansion 8M] Uras 1 to Mar 9 have small protrusions ε at the engagement part 6.
Since it is sandwiched between holes 3 and 3, it has a structure that prevents it from falling off when the concretes 1 to 1 are installed.

Next, another embodiment will be illustrated and explained in FIG.

The water stop plate 10 on the same side has a cylindrical part 11 in the center, and its circle f
Fi) Part 11. ．． The thin plate part 12 extends to the left and right, and this fish is the same as the previous embodiment, but the thin plate part 12
A metal reinforcing plate 14 is embedded inside the thick engaging portion 13 provided on the side of the plate.

The reinforcing plate 14 is attached to the water stop plate 1 at right angles to the thin plate portion 12.
It is buried parallel to the longitudinal direction of 0.

A thin plate portion 15 extends slightly outward from the engaging portion 13.
A water-swellable excimer 16 is attached to the upper and lower surfaces of.

The present embodiment has the above-described structure, and is buried along the pouring seam 2 between the structures 1 in both the concrete structures 1 in the same manner as in the previous embodiments.

Even when a strong tensile load is applied to the engaging portion 13, the engaging portion 13
Since the reinforcing plate 14 is buried inside the engaging part 13
Shrinkage of itself is avoided, and therefore, influence on the outside of the engaging portion 13 can be almost completely prevented, and high water-stopping properties can be maintained.

Furthermore, water-stopping clay can be achieved because the water-swollen Ex-1 hemmer 16 has a large contact area with the concrete 1 to the structure 1.

Next, another embodiment will be illustrated and explained in FIG. 4.

The water stop plate 20 of this embodiment has a protrusion 21 formed only on one side at the center to make the inside hollow, and the other side is formed smooth and there is a wall between the smooth surface and the hollow part. The thickness is extremely thin.

A thin plate part 22 extends from the center part J to the left and right, and a thick engaging part 23 is formed on the side thereof, and a full strip with a trapezoidal cross section is formed on the outer surface of the engaging part 23. Water-swollen Ex1 to Mer24 have their half bodies IN aligned with the same groove in C1.

In the case of this embodiment, when the water stop plate 20 is buried in the concrete structure 1 by pouring the concrete 1~, the concrete 1~ does not enter the central hollow part, Afterwards, if a shift occurs between the two concrete h structures 1, the extremely thin part between the hollow part and one smooth surface will be cut and the C
The protrusion 21 can be freely deformed.

Further, the structure of the engaging portion 23 and the attached portion of the water-swellable Ex-1 hemmer 24 is simple and inexpensive, and high water-stopping properties can be maintained.

Hereinafter, various examples of scale modifications of the water-swelling parts 1 to 1 will be explained using partially cutaway sectional views shown in FIGS. 5 to 9, respectively.

The water stop plate 30 shown in FIG. 5 has a central cylindrical portion (not shown) J
: A thick engaging part 32 is formed on one side of the extended IC thin plate part 31 near the side thereof, and the engaging part 32 is connected to the thin plate part 31 protruding outward from this part. water swelling av] elastomer 33 is attached.

Since the water-swellable aVI IZ Silasmer 33 is installed only on one side of the water-swelling plate 30, even if the water-swelling plate 30 is rolled into a roll during transportation, the water-swellable elastomers 33 will not come into contact with each other. It is easy to handle things that come in close contact with each other.

The water stop plate 40 shown in FIG. 6 has a thick engaging part 42 formed on the side of a thin plate part 41, and water-swellable extensors 1 to 43 are attached to the smooth outer surface of the engaging part 42. There is.

Although the structure is extremely simple, there is a surface where the elastomers 1 to 43 contact the concrete structure.
Highly waterproof.

In the water stop plate 50 shown in FIG. 7, a thick engaging portion 52 is formed on the side of a thin plate portion 51, and two protrusions 53 are oriented in the longitudinal direction on the outer surface of the engaging portion 52. The water-swellable extensors 1 to 54 are partially fitted between the protrusions 53 and partially protruded outward.

Since the water-swellable elastomers 1 to 54 are attached to the medium-heated part of the outer surface of the protrusion j3, the tensile force has almost no effect on the water-swellable elastomer 54. The water expansion pressures 1 to 54 work effectively to maintain high water-stopping properties.

In the water stop plate 60 shown in FIG. 8, a thick engaging portion 62 is formed on the side of a thin plate portion 61, and a thin plate portion 63 with a somewhat longer line length extends outward from the engaging portion 62. A water-swellable elastomer 64 is attached to the side of the elastomer.

Since the thin plate portion 63 extends outward from the engaging portion 62, the influence of tensile force on the water-swellable elastomer 64 is extremely small, and the water-swellable elastomer 64 is made of concrete 1.
~Able to maintain high water-stop properties by contacting the structure on three sides.

The water stop plate 70 shown in FIG. 9 is substantially the same as the example shown in FIG. Swelling T-Las l-mer 73
are fitted.

The water-swellable elastomer 73 has a rod shape with a hexagonal cross section, and its half body is fitted into the groove on the outer surface of the engaging portion 12 .

Although the structure is simple and cheap, it can maintain high water-stopping properties.

In the above embodiments, the water-swelling X-mers were attached to the outside of the engaging portions on both sides of the water-stop plate to form the water-stopping portion. may be set.

In addition to adding such elastomer to make a water stop part,
The surface of the thin plate portion extending to the outside of the engaging portion may be formed into a wave shape to serve as a water stop portion.

An example of the water stop plate is illustrated in FIG. 10.

The water stop plate 80 has a thick engaging portion 82 formed on the side of a thin plate portion 81, and a thin plate portion 83 further outside the engaging portion 82.
extends, and both sides of the thin plate portion 83 are formed in a wavy shape.

By making the surface of the thin plate part 83 wave-like, the contact area of the thin plate part 83 with the concrete structure is widened, and a water stop part with high water stop property is formed.

When a tensile load is applied to the water stop plate 80, the engaging part 82 receives it (and the thin plate part 83 outside the engaging part 82 is not affected, so the thin plate part 83 hardly deforms and has a high stopping point. The aqueous nature is maintained.

In addition to the above-mentioned embodiments, various shapes of the engaging portion and structure of the water stop portion are conceivable.

Nursing care U and scooping blade The present invention has a water stop portion on the outside of the engagement portions on both sides of the band-shaped water stop plate, so that even if the concrete structures shift and tensile force is applied to the water stop plate, Since the engaging part receives and stops the tensile load and has little effect on the water stopping performance of the water stopping parts outside the engaging part, high water stopping performance can be maintained at all times.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a sectional view showing a water stop structure for a case of pus according to the present invention, and Fig. 2 is a sectional view showing a state in which a tension horn is applied to the water stop plate on the same side. , Fig. 3 is a sectional view showing a water stop structure of another embodiment, Fig. 4 is a sectional view showing a water stop structure of another example, and Figs. FIG. 11 is a partially cutaway sectional view showing a modified example, and FIG. 11 is a sectional view showing a conventional water stop structure. FIG. 12 is a sectional view showing a state in which a tensile force is applied to the water stop plate in the conventional example. 1... Concrete 1 ~ structure, 2... pouring joint, 3...
...Water stop plate, 4...Cylindrical part, 5...Thin plate part, 6.
...Engagement part, 7...Thin plate part, 8...Small protrusion, 9.
... Water swelling elastomer, 10... Water stop plate, 11... Cylindrical part, 12... Thin plate part, 13... Engaging part, 14... Reinforcement plate, 15...
・Thin plate part, 16...Water #3 water elas 1 to mer, 20...Water stop plate, 21...Protrusion, 22...Thin plate part, 23...Engaging part, 24 ... Water swelling side elastomer, 30... Water stop plate, 31... Thin plate part, 32...
Engagement part, 33...Water swelling elastomer, 40...Water stop plate, 41...Thin plate part, 42...Engagement part, 43...Water swelling elastomer, 50...Water stop Plate, 51...Thin plate portion, 52...Engaging portion, 53...Protrusion, 54...Water swelling elastomer, 6()...1F water plate, 61...Thin plate portion , 62・
...Engagement part, 63... Thin plate part, 64... Water swelling elastomer, 70... Water stop plate, 71... Thin plate part,
72... Engaging portion, 73... Water swelling elastomer, 80... Water stop plate, 81... Thin plate portion, 82... Engaging portion, 83... Thin plate portion. Agent: Patent attorney Nozomi Ehara and 3 others - 15~

Claims (1)

[Scope of Claims] In a band-shaped water stop plate attached along the pour joint of a concrete structure, the water stop plate main body is formed of an elastomer and has thick engaging portions on both sides in the width direction or in the vicinity thereof. A water stop plate characterized in that a water stop part is provided on the outside of both engaging parts.