JPS6343279Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to water-stop packing for joints in concrete frameworks, and is mainly used in roadway construction, by sequentially arranging unit frameworks such as humid pipes and box culverts, which are configured in a predetermined shape, adjacent to each other.
Alternatively, when constructing a series of dome walls by sequentially pouring them into a predetermined shape on site, this prevents water leakage at the joints that occur between each frame, and also prevents vibrations, shrinkage, etc. of the frame. It has elasticity that can absorb the fluctuations that occur in joints, and its elasticity is reliably exerted by preventing adhesives and obstacles from entering during construction.
This invention relates to water-stop packing for joints that is easy to handle and install.

For example, when constructing a crash road or the like, the concrete frame that is the construction body is appropriately divided and constructed, and the parts are successively connected to complete a single structure. At this time, water stop plates made of vinyl chloride resin or synthetic rubber formed into various shapes are interposed to close the gaps at the joints that occur between each frame. However, most of these waterstops are placed in the direction of extension when viewed from the part where the concrete is poured, so the waterstop is divided into an upper part and a lower part with the waterstop as a boundary, and the lower part is covered with concrete. Because it was difficult for the material to enter the concrete and the concrete could not be compacted sufficiently, the concrete structure and waterstop plates did not come into close contact, causing water leakage.

Not only that, even if the water stop plate is in close contact with the building structure, it cannot adequately respond to shrinkage and temperature changes that occur in the building structure itself, as these are only due to the expansion and contraction effects of the material itself. It is also a cause of water leakage. In the end, conventional water stop plates have difficulty adhering to the concrete structure, and the upper and lower parts of the structure
In addition to being difficult to deal with various side-to-side fluctuations, shrinkage, and temperature changes, the product itself is bulky and difficult to handle, which poses major operational obstacles.

Therefore, this idea was devised in view of the existing drawbacks mentioned above, and as a result of various experiments and prototypes,
A cross section V that is interposed between the mounting plates by being attached to the opposing faces of the building blocks at the joint gap, which is the connection site between adjacent concrete structures. Even if there are various irregular and non-directional fluctuations between the building blocks caused by vibrations, temperature changes, etc. due to the mechanical expansion/contraction opening/closing action of the letter-shaped expansion plates, these can be sufficiently absorbed. It completely prevents water leakage, and its elasticity is reliably demonstrated by preventing the intrusion of adhesives and obstacles during construction, and the product itself is lightweight and easy to handle. We have successfully developed water-stop packing for joints in concrete structures that can dramatically improve construction work.

Hereinafter, embodiments of this invention will be described with reference to the drawings.

The reference numeral 1 shown in the figure is a pair of mounting plates placed facing each other on both sides so as to be attached to the adjacent concrete frames C1 and C2 respectively. 1
A pair of extensible plates 2 are interposed between the mounting plates 1 so as to be folded in and connected to each other. That is, a pair of mounting plates 1 and a pair of extensible plates 2 constitute a long cylinder with a deformed approximately H-shaped cavity, and the installation is centered around the bent part at the center of the extensible plates 2. If you look at the continuous part with the plate 1, it is formed as if it were M-shaped.

Then, on the outside of the extensible plate 2, the distal end edge of the occluding band 3 protruding from one side piece of the extensible plate 2 is connected to the opposite side piece in a peelable manner, and the number thereof is as shown in the figure. In this case, it is not limited to the two locations, the base of the expandable plate 2 and the center of the extendable plate 2, but one or three locations.
It may be more than one place. However, this closing strip 3 itself is provided to prevent adhesives, sand, mortar, and other obstacles during construction work from entering the outer gap of the expandable plate 2, so it is placed at least at the base of the expandable plate 2. It is desirable that Further, when a plurality of blocking strips 3 are provided, the intrusion prevention effect is increased by alternating the protruding directions. The leading edge of the closure strip 3 is connected to the other side by utilizing the adhesive action of the heating material itself when extruded from the molding die during extrusion molding of this invented packing. do. In other words, this is due to the natural adhesive action that occurs when the leading edge of the occlusion band 3, which has a substantially flat V-shaped cross section, comes into contact with one side of the other side, and this adhesion is caused by applying a mechanical separation force to the occlusion band. It is assumed that the piece 3 itself can be peeled off without being damaged, and the elastic plate 2
It does not inhibit its own expansion and contraction action. Note that 4 in the figure indicates that the mounting plate 1 and
This is a spacing maintenance piece that protrudes from each of the expandable plates 2.

The entire assembly consisting of the mounting plate 1, the elastic plate 2, the closure strip 3, and the spacing maintenance piece 4 is integrally formed of rubber or an elastic material similar to rubber, such as EPT resin. .

Therefore, if the frames C1 and C2 themselves are pre-configured secondary products such as humid pipes and box culverts, they may be constructed on-site such as dome walls obtained by pouring concrete on-site. In some cases, it is a cast frame, and in both cases, this devised packing is attached to the connecting parts of the unit frames, and the mounting means 5A, 5B, 5C attached to the outside of the mounting plate 1 are attached.
It has come to be mediated by

When the unit frame is a secondary product such as a humid pipe, the mounting means 5A is made of a soft foamed resin, preferably a closed cell type, fixed to the outside of each mounting plate 1, as shown in FIGS. 1 to 3. The shrinkable bonded body 6 is interposed and bonded to the concrete body C1 and C2 surfaces. For example, as shown in the figure, when connecting a body C1 with a receptacle with a step on the inner periphery and a body C2 with a receptacle with a step on the outer periphery, a storage groove 7 is formed on each joint surface. Keep it
The building frame C is inserted into the gap obtained by the facing and matching storage grooves 7 via an epoxy resin adhesive 8.
1. Insert it in a state where it is adhered to the C2 side. Actually, the adhesive 8 is placed in the storage groove 7 on one side of the frame C1.
Adhesive material 8 is applied to the inner surface of the storage groove 7 on the other side of the frame C2, and the two parts are bonded together.

Furthermore, the attachment means 5B, as shown in FIG.
A connecting body 10 having a U-shaped cross section and forming a cavity 9 on the outside of the mounting plate 1 is integrally connected to both sides of the mounting plate 1 at its inner wall edge, and a contact piece 1 is provided on the side of the mounting plate 1.
1 with wings installed. This not only can be used in the same manner as the above-mentioned attachment means 5A, but also allows for strong connection such as nailing or gluing to the formwork or the frame C1, C2 surfaces with the contact piece 11, and the The elastic function of the connecting body 10 can also be obtained by the 9 itself.

In addition, when the unit frame is a cast-in-place frame, the attachment means 5C are as shown in FIGS. 4 to 6.
An appropriate number of joint protrusions 1 having a substantially T-shaped cross section are protruded from the outside of one of the mounting plates 1 to be buried in the surfaces C1 and C2 of one of the concrete bodies. For example, as shown in the figure, when constructing a dome wall by dividing it into sections of a predetermined length and constructing it on-site, the frame C is constructed continuously.
At the connection site where the joint surfaces of C1 and C2 come into contact with each other, a storage groove 13 is formed in the joint surface of the existing frame C1, and an epoxy resin adhesive is applied inside this storage groove 13. The frame C1 is attached to the outside of the mounting means 5A and 5B attached to the mounting plate 1 via 14.
Insert it in a state where it is glued to the Next, after completing the molding for the frame C2 that will be continuous adjacent to this frame C1,
Joint protrusion 12 and mounting plate 1 on which this 12 protrudes
Adhesive 14 is applied to the outer surface, concrete material is poured into the joint surface of the skeleton C1 as part of the formwork surface, and the joint protrusion 1 is obtained by pouring concrete material and solidifying the joint surface of the skeleton C2.
2. In addition, at this time, the number of joining protrusions 12 is not limited to one as shown in the figure, but can also be two or more. In addition, the mounting plate 1 on which the joint protrusion 12 is protruded is formed thicker than the other plate 1, so that the
It is possible to increase the bondability with 2 and at the same time improve the robustness. Of course, it is also possible to separately form a plate on which an appropriate number of joint protrusions 12 are protruded and adhere it to the outside of the mounting plate 1 (not shown). The shape may be round as shown in the figure or square (not shown) as desired.

Therefore, by adhering to the bodies C1 and C2, which are secondary products, via the shrinkable bonded body 4,
In addition to ensuring the connection with the rigid frames C1 and C2, even if there is a slight difference in the gap width between the frames C1 and C2, this is automatically absorbed and adjusted to ensure proper interposition. be able to. In addition, an appropriate number of joint protrusions 12 having a substantially T-shaped cross section are buried in the faces of the building blocks C1 and C2, thereby achieving joint integration with the building blocks C1 and C2 constructed by on-site construction. At the same time, reliable joint stability can be obtained in which the protruding portion at the tip of the joint protrusion 12 is prevented from separating from the building blocks C1 and C2.

Although not shown in the drawings, in the case where the joint surfaces between the building blocks C1 and C2 have corner portions,
In order to accommodate this, the cylindrical body consisting of a pair of mounting plates 1, a pair of extensible plates 2, and an appropriate number of closure strips 3 can be formed into a substantially L-shape in plan view. Of course, it is possible to change the angle not only to 90 degrees but also to other angles depending on the angle of the corner part.
The widths of the mounting plate 1, the expandable plate 2, and the closure strip 3 can be appropriately selected depending on the size and the size of the joint surface.

This invention consists of the above-mentioned structure, and when used, when the frameworks C1 and C2, which are secondary products such as Hume tubes, are joined together, it is possible to use the structure shown in FIGS. 2 and 3.
As shown in the figure, it is inserted into the storage groove 7 and fixed with adhesive 8, and when joining the frames C1 and C2, which are cast-in-place products such as dome walls, As shown in FIGS. 5 and 6, first, after inserting and fixing with adhesive 14 into the storage groove 13 on the joint surface of the existing frame C1,
The exposed joint protrusion 12 is adhered to the joint surface of the frame C2 to be cast on site using adhesive 14 applied to the joint protrusion 12, and fixed by embedding it. .

Therefore, the skeletons C1 and C that are integrally constructed
Even if the building blocks C1 and C2 vibrate and contract separately due to changes in earth pressure and the ground, the space between the mounting plates 1 attached to the faces of the building blocks C1 and C2 will be A pair of interconnected extensible plates 2 expand and contract the material itself and the mechanical structure in response to fluctuations in the building blocks C1 and C2, and are always closed even when the joining distance between the building blocks C1 and C2 changes. This allows for reliable water stoppage.

At this time, since the mounting plate 1 itself is attached to each of the adjacent concrete frame C1 and C2 sides,
There is no risk of separating from the skeletons C1 and C2, and the skeleton C
1. Follows the fluctuation of C2. In addition, a pair of extensible plates 2 having a V-shaped cross section are interposed between both ends of a pair of mounting plates 1 facing each other so as to be folded in between the mounting plates 1 to connect them. Regardless of the size of the distance between the skeletons C1 and C2, for example in the adjacent direction, in the direction perpendicular to this, or even in a combination of both directions, the central bent part of the expandable plate 2 This can be addressed by freely changing the angle of the connecting portion with the mounting plate 1. Meanwhile, since the mounting plate 1 and the extensible plate 2 themselves are both integrally formed of rubber or an elastic material similar to rubber, the elastic bending action of the plate itself also follows the fluctuations of the building blocks C1 and C2. greatly contributes to

In particular, on the outside of the extensible plate 2, the distal end edge of the closure band 3 protruding from one side of the extensible plate 2 is connected to the opposite side piece in a removable manner, so that The adhesives 8 and 14 are prevented from entering into the outer gap of the expandable board 2 when the expandable board 2 is placed in construction, and the expandable board 2 itself is not hardened.
In addition, it prevents not only the adhesives 8 and 14 but also sand, mortar, and other substances from entering, and even if the blockage is temporarily blocked, if there is vibration or contraction after construction, the blockage band Since the tip edge of the piece 3 is peeled off by a forced external force, the expansion and contraction function of the extensible plate 2 due to the approach and separation of both sides of the plate 2 is not affected at all.

Mounting means 5A, 5B attached to the outside of the mounting plate 1,
5C is designed to securely attach to the frames C1 and C2, whether they are secondary products or cast-in-place products, so that even if an excessive external force or other force is applied to the joint surface, the frames C1, Separation from C2 is prevented, and a stable attachment state can be achieved.

As explained above, according to this invention, for example, when constructing a fallen road or the like, by interposing the concrete framework in an adhesive state, it becomes completely integrated with the framework and reliably prevents water leakage that occurs in the gaps between them. Because it has the elasticity to absorb fluctuations that occur in the joints, which are joint parts, due to vibrations, contractions, etc. of the building structure, it also makes it possible to automatically adjust the gap width at the joint parts. Its elasticity is reliably demonstrated by preventing adhesives and obstacles from entering during construction, and the shape and dimensions can be easily changed depending on the size of the joint surface, and the packing itself is lightweight. Since it is easy to handle, it not only greatly improves work efficiency, but also can be used to prevent leaks of various liquids, such as reliably preventing liquid leaks that occur between structures that fluctuate rapidly, such as in oil dikes. It has versatility and has extremely useful effects in practice.

[Brief explanation of drawings]

The drawings show an embodiment of this invention; Fig. 1 is a perspective view, Fig. 2 is a cross-sectional view at the connection site when connecting and constructing Huyume pipes, which are secondary products as concrete frameworks, and Fig. 3 is a perspective view. The figure is a sectional view taken along the - line in FIG. 2, and FIGS. 4 to 6 show other embodiments, of which FIG. 4 is a perspective view, and FIG. 5 is a dome wall constructed on-site as a concrete frame. A cross-sectional view of the connection site when constructing a connection between bodies, Figure 6 is the - in Figure 5.
FIG. C1, C2...Concrete frame, 1...Mounting plate,
2... Expandable plate, 3... Occlusion band piece, 4... Spacing maintenance piece, 5
A... Attachment means, 6... Shrinkage joint, 7... Storage groove, 8
...adhesive, 5B...attachment means, 9...cavity, 10...coupling body, 11...contact piece, 5C...attachment means, 12...joint protrusion, 13...accommodation groove, 14...adhesive.

Claims (1)

[Claims for Utility Model Registration] 1. A pair of mounting plates that are attached to each of the adjacent concrete frame surfaces are placed opposite to each other on both sides, and a pair of telescopic plates having a V-shaped cross section are attached between both ends of the mounting plates. The occluding band is interposed so as to be folded in between each other, and on the outside of the extensible plate, the distal end edge of the occlusion band protruding from one side of the extensible plate is releasably connected to the opposite side piece, and these A water stop device for joints in a concrete building body, characterized in that a mounting plate, an elastic plate, and a closure strip are integrally formed of rubber or an elastic material similar to rubber, and a mounting means is attached to the outside of the mounting plate. 2. The attachment means is a concrete frame joint stopper as set forth in claim 1 of the utility model registration claim, which is attached to the surface of the concrete frame by interposing a shrinkable joint made of soft foam resin fixed to the outside of each mounting plate. Water patching. 3 The mounting means is a connecting body having a U-shaped cross section that forms a cavity on the outside of the mounting plate, and is integrally connected to both sides of the mounting plate at the edges of both side walls, and a contact piece is provided on the side of the mounting plate. A water-stop packing for joints in a concrete structure as set forth in claim 1 of the utility model registration claim. 4. The mounting means is the concrete frame according to claim 1 of the utility model registration claim, in which an appropriate number of connecting ridges having a substantially T-shaped cross section are embedded on the outside of one of the mounting plates and are embedded in one of the concrete frame surfaces. Waterproof packing for joints.