JP2700478B2 - Water stop plate - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water stop plate used for stopping water at a concrete joint of a building foundation such as an underground part of a building, a subway platform, an underground parking lot, and the like. is there.

2. Description of the Related Art Conventionally, a waterproof plate generally used at the joint of concrete is simply a waterproof plate made of vinyl chloride resin, vulcanized rubber or non-vulcanized rubber, and is used as shown in FIG. .

Concrete joint 0 between upper and lower concrete 01,02
There are 3 steel bars, and reinforcing steel 04 is buried in both concrete 01 and 02.

In the interior 2 of the concrete 01, 02, a waterproof plate 05 made of a vinyl chloride resin is embedded so as to divide the joint seam 03 left and right.

The water that has entered the joint 03 from the outer surface of the concrete is blocked by the waterproof plate 05 to prevent the water from leaking into the inside of the concrete.

In addition, there is a water stop plate having a structure in which an adhesive rubber is bonded to a restraining plate, and an example thereof is shown in FIG.

The water-stop plate 010 has a band-shaped adhesive rubber 013 adhered to the center surface of the band-shaped restraint plate 011, and the cross section is inverted on the left and right side surfaces of the restraint plate 011 where the adhesive rubber 013 is not adhered. An anchor 012 having a projecting shape is formed.

The water stop plate 010 is first fixed directly to an underground wall or a formwork with a nail or the like, and then the concrete joint is made along the adhesive rubber 013 at a place where concrete is cast.

The water stop plate 010 is fixed to the concrete by the anchor 012, and the concrete joint is closed by the adhesive rubber 013, so that water can be prevented from entering the concrete joint.

However, in the case of the example shown in FIG. 6, it is not easy to embed and fix the water stop plate 05 in a place where the reinforcing bars are densely packed in the concrete wall, and particularly, the connection between the water stop plates is extremely difficult. Have difficulty.

Even if the waterproof plate 05 is completely buried in the center of the concrete wall, water may enter the interface between the reinforcing bar 04 and the concrete 01, 02, and water may leak through the reinforcing bar 04 to the inside of the concrete. Yes, it is difficult to completely stop water.

 Corrosion of the rebar is also easy to occur.

Next, in the case of the water stop plate shown in FIG. 7, a problem occurs when the water stop plates 010 are connected to each other.

For example, the easiest way to connect the water stop plates 010 in a cross shape is to overlap the intersections as shown in FIG.

However, when the overlapping connection is performed in this manner, in FIG. 8, when one water blocking plate 010a is straddled by the other water blocking plate 010b, the surface of the adhesive rubber 013a of the one water blocking plate 010a and the other water blocking plate 010b are connected. A gap d is generated between the rear surface of the restraint plate 011b and the water, and a water inflow path is formed.

This gap d is formed between a pair of anchors 012a thicker than the adhesive rubber 013a of one water stop plate 010a and the restraint plate of the other water stop plate 010b.
Since this is a form in which 011b is erected, it is a gap that always occurs, and it is troublesome to close this gap.

Therefore, when connecting the water stop plates in a cross, as shown in FIG. 9, the other anchor 012a below one of the restraint plates 011b is cut off so as to cut off the gap d.
Did not occur.

However, the man-hour required to cut out the predetermined anchor portion in accordance with the dimensions at the site is extra, and the workability is not good.

At the corner of the basement wall, as shown in FIG.
Unless a cut c is made in the 0 anchor 012, it cannot be brought into close contact with the wall surface.

Such a situation is the same when not only the corner but also the wall has a curvature, and the workability is not good.

An example of a water-blocking plate molded from a water-swellable composition and embedded with a metal plate having a hole therein as a core material (Japanese Patent Laid-Open No.
No. 22810), but it is difficult to fix it to the ground or concrete surface in advance.

That is, an adhesive is used. However, if the surface is wet or if there are irregularities, the workability is poor such that the adhesive does not work effectively.

Means for Solving the Problems and Action The present invention has been made in view of the above points, and an object thereof is to completely prevent water from infiltrating into a concrete joint, and to provide a water stopping plate excellent in workability. The point is to provide.

That is, the present invention has a laminated structure in which a flat water blocking plate main body made of a water-swellable non-vulcanized rubber having an adhesive surface is laminated at the center while leaving both sides of one surface of a rigid flat plate restraining plate. And a water stop plate which can be fixed in advance by nailing both side portions of the flat restraint plate.

By attaching such a water stop plate to the joint at the outer surface of the concrete, water intrusion into the concrete joint is prevented, and when water tries to enter, the water-swelling non-vulcanizing material serving as the water stop plate body. The rubber absorbs water and swells to completely block the infiltration path.

In addition, the water stoppage plate adheres to the concrete due to the adhesive strength of the water-swellable non-vulcanized rubber and its expansion, so that no separate anchor portion is required, and workability on site can be improved.

It is a simple laminated structure in which the flat water-stop plate body made of water-swellable non-vulcanized rubber is overlapped on one side of the flat-plate restraint plate, leaving both sides to be nailed. Can be fixed in advance, so even if the ground or concrete surface is wet or has irregularities, it can be securely fixed and good workability. , The manufacturing is simple and the cost can be reduced.

Embodiment An embodiment according to the present invention shown in FIGS. 1 to 5 will be described below.

The waterproof plate 1 according to the present embodiment has a thickness of 1 to 5 mm and a width of 100 to 300.
A water blocking plate main body 3 having a thickness of 3 to 5 mm and a width of 60 to 280 mm is stuck on a band-shaped restraining plate 2 of m to form a laminated structure.

The band-shaped restraining plate 2 is made of polyethylene, but may be a vinyl chloride resin or an iron plate.

The water blocking plate main body 3 is made of a water-swellable non-vulcanized rubber having an adhesive surface, and has a volume expansion coefficient of 15 to 200%.

The water blocking plate main body 3 is attached to the center of the belt-shaped restraining plate 2 except for both side portions 2 '.

As shown in FIG. 2, the side of the restraint plate 2 of the water stop plate 1 is applied to a predetermined position on the wall surface of the ground 4 where the concrete is to be joined, and a plurality of nails 5 are attached to both side portions 2 ′ of the restraint plate 2. The water stop plate 1 is fixed to the ground 4 by driving.

Then, when concrete is cast, a water stop structure shown in FIG. 3 is formed.

After the lower concrete 10 is cast, the upper concrete 11 is cast, a concrete joint 12 is formed between the two, and the waterproof plate 1 is attached so as to close the concrete joint 12.

After the concrete is poured, the water blocking plate body 3 adheres to the concrete due to the adhesive force of the non-vulcanized rubber, absorbs the moisture contained in the concrete, and expands, and is firmly fixed to the concrete 10, 11 by the expansion pressure. Is done.

 Therefore, no anchor part is required.

As described above, since the water blocking plate 1 prevents water from entering the outermost portion of the concrete of the building, water does not enter the concrete joint 12 and reaches the reinforcing steel bar, thereby preventing corrosion.

When the spring water from the ground 4 reaches the water stop plate main body 3, the expansion pressure is further increased to increase the degree of adhesion with concrete, and at that time, the restraint plate 2 receives the pressure generated by the expansion of the water stop plate main body 3. In addition, the water stop plate 1 is assisted in close contact with the concrete surface, and the water intrusion path can be completely blocked to completely prevent the water from entering the concrete joint 12.

As shown in FIG. 4, the water blocking plates 1 are connected to each other by fixing their ends to each other to the underground wall as shown in FIG. The work is easy if it is attached.

Even if water infiltrates from the seam between the band-shaped restraint plates 2, even if water enters the seam between the water stop plate bodies 3 due to the expansion of the two water stop plate main bodies 3, and even if water invades into the seam, the seam plate 20 still remains. Expands and water intrusion is completely shut off.

In the case where the water stop plates are connected in a cross or T shape, as shown in FIG. 5, the other water stop plate 1b should be superimposed on one water stop plate 1a at the intersection. ,
Further, a flat plate 30 made of water-swellable non-vulcanized rubber is overlapped and connected so as to straddle the water blocking plate 1b.

The flat plate 30 has a central portion adhered to one of the water stop plate main bodies 3b,
Both ends are adhered to the water stop plate main body 3a on the other side, and the three members are substantially integrally formed.

Since this water stop plate does not have an anchor portion, one water stop plate main body 3a and the other restraint plate 2b are in close contact with each other and do not form a gap, and along the surface of the water stop plate 1b-side restraint plate 2b. Water that might enter is blocked by the flat plate 30, and the water stop plate main bodies 3a, 3b,
Water can be completely stopped by the expansion of the flat plate 30.

The work method is also excellent in workability because it is a simple operation of simply connecting the one water stop plate 1a to the other water stop plate 1a, connecting the water stop plate 1b, and attaching the flat plate 30.

Further, in the present embodiment, the anchor 0
Since it does not have 12, even if the wall surface is bent or curved, it is deformed following the wall surface and can be easily attached, and the construction is extremely simple.

In the present embodiment, the water stop plate 1 is directly nailed to the ground 4 and fixed. However, the water stop plate 1 can be fixed to the formwork, and it is possible to fix the water stop plate 1 to various shapes of various building structures. It can be freely attached and constructed.

Effect of the Invention The present invention is a water stop plate having a structure in which a water-swellable non-vulcanized rubber is stacked on a restraining plate, so that by adhering such a water stop plate so as to close the joint of concrete, water intrusion can be prevented. When this occurs, the water-swellable non-vulcanized rubber expands, and this expansion pressure can completely block the water intrusion path.

The water stoppage plate is fixed to concrete by the adhesive force and expansion pressure of the water-swellable non-vulcanized rubber and does not need an anchor part, so workability can be improved and it can be attached to various shapes of underground walls of various building structures. Is possible and versatile.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a partial cross section of a water stoppage plate according to an embodiment of the present invention, FIG. 2 is a perspective view showing the water stoppage plate fixed to a ground wall surface, and FIG. FIG. 4 is a perspective view showing a state in which the water stop plates are connected, FIG. 5 is a perspective view showing a state in which the water stop plates are connected in a cross shape, and FIG. FIG. 7 is a cross-sectional view showing a water-stop structure using a water plate, FIG. 7 is a cross-sectional view of another conventional water-stop plate, FIG. 8 is a perspective view showing a state in which the water-stop plates are overlapped and connected in a cross shape, FIG. 9 is a perspective view showing a state where the water stop plates are connected in a cross shape without overlapping, and FIG. 10 is a perspective view showing a state where the water stop plates are bent. 1,1a, 1b …… water stop plate, 2,2a, 2b …… restraint plate, 3,3a, 3b ……
Water stop plate body, 4… ground, 5… nail, 10,11… concrete, 12… concrete joint, 20… joint plate, 30… flat plate.

Claims (1)

(57) [Claims] 1. A flat watertight plate body made of a non-vulcanizable rubber having a water-swelling property and having an adhesive surface is superposed at the center of both sides of one surface of a rigid plate-shaped restraint plate having rigidity to form a laminated structure. A water stopping plate, wherein both sides of the flat restraining plate can be nailed and fixed in advance.