JP2657626B2 - Mooring material for waterproofing material at concrete joints - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mooring device for a waterproof material at a joint of concrete.

[0002]

2. Description of the Related Art Waterproofing is performed on concrete joints using a waterproofing material called "gelfite rope". The water-stopping material is a mesh-like polyester rope having a thickness of about 19 mm and a length of about 3 m, in which granular bentonite is sealed, and this is applied to the surface of the previously cast concrete. The concrete is embedded by laying it down while curving in accordance with the condition, temporarily fixing it so that it does not move accidentally when the concrete is subsequently poured, and then passing the concrete. Then, under the embedded state of the water-stopping material, the bentonite comes into contact with water and swells and gels to fill voids in the concrete, thereby achieving a water-stopping effect.

[0003]

However, as a means for temporarily fixing such a water-stopping material, a conventionally common binding wire (wire) and its manual operation tool (Hatsuka) are used, and the water-stopping is performed by the binding wire. Since both ends of the timber and several intermediate points are tied to auxiliary reinforcing bars planted from concrete, the work is extremely troublesome, and requires a considerable amount of time and heavy labor.

[0004] The water-stopping material is generally flexible, and the bentonite particles enclosed in the rope freely move and locally form agglomerates. However, the binding cannot be quickly and firmly performed, and this is particularly remarkable when the joint portion of the concrete is a vertical surface, and often moves or floats when the concrete is poured. A stable water stopping effect cannot be achieved.
Furthermore, even the serious problem of exposure from the concrete surface after casting may be caused.

[0005]

SUMMARY OF THE INVENTION The present invention is intended to solve such a problem, and as a mooring device for a water-stopping material for that purpose, a single metal plate having a spring property is formed into a dovetail shape. Channel frame, and a hook piece that is continuously and integrally protruded rearward from the channel frame.The channel frame is forcibly inserted into the concrete reinforcing reinforcing steel from the opening thereof and crimped. The present invention is characterized in that a water-stop material extending in a state of crossing a reinforcing bar is pressed against the surface of concrete by the hook piece.

[0006]

According to the above construction of the present invention, the channel frame of the mooring tool is formed in a dovetail shape from a single metal plate having a spring property. As long as it is forcibly inserted, due to the restoring elastic pressure accompanying the expanding deformation, it is strongly crimped and integrated into the state of being hugged to the rebar, and there is a possibility that the position of the rebar will shift or idle. Absent.

[0007] That is, anyone can quickly and quickly perform the work of attaching to the above-mentioned rebar by one touch operation.
Nevertheless, it is possible to obtain a stable and strong crimped state,
The elastic force of the hook pieces that continuously and integrally project from the above channel frame in the rearward direction makes it possible to stably and firmly press the waterproof material against the concrete surface, completely achieving the waterproof effect of the waterproof material. You can.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a preferred embodiment of a water-stopping material mooring device (A) according to the present invention. From one springy metal plate, it is plastically deformed into the following form.

That is, in FIGS. 1 to 9, (11) is a channel frame which is forcibly inserted from the cast concrete (C) to the reinforcing deformed reinforcing bar (B) to be planted from the radial direction and is crimped. The opening (12) is on the back (1
3) It is bent into an overall dovetail shape having a narrower width dimension than that of 3). (S) shows the opening width at the opening (12), but it is needless to say that the opening (12) is narrower in advance than the thickness (d) of the reinforcing bar (B).

(14) is a pair of left and right facing sides forming a channel frame (11) together with the back surface (13), and corners between the left and right side surfaces (14) and the back surface (13) are formed. Through the flat surface (15), the light is refracted into an acute angular shape.

According to the angular refraction mode, the anchor (A) itself can be effectively prevented from idling with respect to the reinforcing bar (B), and the channel frame (1) can be effectively prevented.
There is also an advantage that a stronger elastic force can be applied to the opening (12) of 1).

Reference numeral (16) denotes a pair of left and right insertion guide lips which are bent in the form of a wrapper which expands outward from the opening edge of the channel frame (11), and serve for a smooth insertion operation into the reinforcing bar (B). In addition, safety at the time of handling the mooring tool (A) can be enhanced.

(17) is the same as the channel frame (1).
This is a large mortar distribution window that communicates and opens over the back surface (13) and the left and right side surfaces (14) of (1), and serves to distribute the mortar during concrete splicing into the frame uniformly and smoothly.

The mortar distribution window (17) is punched and opened in a U-shape as viewed from the side, and the rear surface (13) and the left and right side surfaces (14) of the channel frame (11) relatively remaining therefrom are formed. , A pair of upper and lower channel frame pieces (11a) (1
As a result, the strip is reduced to 1b).

In this case, each of the strip-shaped channel frame pieces (11
a) The band width (h) of (11b) is changed to the knot (w) of the reinforcing bar (B).
It is preferable that the dimensions be the same as or smaller than the joint (w). Cover the rebar (B) with vertical bars (1
8) and the horizontal section (19) are bulging.
The reason is that the channel frame pieces (11a) and (11b) can be stably and firmly bitten and locked to the joints (adjacent concave portions) (w) of (9) without a risk of displacement.

On the other hand, (20) is the above-mentioned channel frame (1).
A hook piece that is continuously and integrally protruded from the center of the rear surface of the lower channel frame piece (11b) in 1) in the direction opposite to the opening (12), and the tip of the hook piece is struck. It is bent at a substantially right angle toward the surface of the installed concrete (C).

The hook piece (20) is connected to the reinforcing bar (B).
Concrete that has been cast as an extended state that intersects with (C)
By pressing the waterproof material (M) laid on the surface of the concrete elastically against the surface, it is possible to prevent the waterproof material (M) from erroneously moving at the time of concrete connection.

When projecting the hook piece (20),
If this is gradually inclined toward the surface of the concrete (C) as it goes to the tip end, it may cause a change in the thickness of the water-stopping material (M) and a change in the deviation of bentonite particles inside the water-stopping material (M). However, it is even more advantageous in that it can be pressed against the surface of concrete (C) under increasingly effective elastic pressure, as it is absorbed by the hook pieces (20).

Reference numeral (21) denotes a mortar distribution window which is punched and opened in the hook piece (20). Like the channel frame (11), the mortar flows smoothly without damming the mortar at the time of joining concrete. It serves to make it work. The waterproof material (M) has bentonite particles (23) enclosed in a mesh-shaped flexible rope (22) having a certain thickness and length, as in the conventional product described at the beginning. Water-absorbing gelation of bentonite exerts a water-stopping action.

FIGS. 10 to 13 show the manufacturing process of the mooring tool (A). In manufacturing the mooring tool (A), a single metal plate having a spring property is preferably used. .6
A stainless steel plate of 1 mm in diameter and a channel frame (1) as shown in FIG.
When 1) and the hook piece (20) are punched out as a continuous T-shaped developed contour shape, the mortar flow windows (17) and (21) are also aperture-distributed at the same time.

Then, from the punched and unfolded state, the channel frame (11) is pressed by a press bending die (not shown).
As shown in FIG. 11, it is primarily bent as a substantially U-shape,
While the left and right side surfaces (14) and the back surface (13) of the channel frame (11) are divided, the projecting tip of the hook piece (20) is also bent at a substantially right angle.

In this primary bending step, the corners between the back surface (13) of the channel frame (11) and the left and right side surfaces (14) are still in an intersecting state at an obtuse angle. Also, a pair of insertion guide lips (16) intersecting the left and right side surfaces (14) at an obtuse angle are bent out of the opening edge of the channel frame (11).

Thereafter, the corners between the left and right side surfaces (14) and the back surface (13) are successively pressed by a press-bending die by the interposition of a flat surface (15) as shown in FIG.
Secondary and bent at an acute angle,
The opening width (s) of the opening portion (12) in 1) is finish-deformed into an overall dovetail shape in which the width dimension is smaller than that of the back surface (13).

Finally, the hook piece (20), the tip of which is already bent, is removed from the channel frame (11).
By bending and raising as shown in FIG. 13 so as to intersect with the back surface (13) of the channel frame at an obtuse angle, the channel frame (11) is finished so as to project in the rear direction opposite to the opening (12).

When using the mooring tool (A), the
As suggested from No. 9 to No. 9, the water-stopping material (M) is extended to a location where the reinforcing concrete deformed reinforcing bar (B) on the concrete surface that has been previously cast is approached, and intersects with the reinforcing steel (B).
Lay down. The waterproof material (M) may be curved as required.

Then, the opening (12) of the channel frame (11) in the mooring tool (A) is forcibly inserted and crimped from the concrete (C) to the reinforcing steel (B) to be planted, from the radial direction. The hook piece (20) projecting from the channel frame (11) is straddled over the waterproof material (M), and the elasticity of the hook piece (20) causes the waterproof material (M).
To the surface of the concrete (C).

In this case, the channel frame (11) of the mooring device (A) is firmly attached to the reinforcing bar (B) by the restoring elastic pressure accompanying the forcible expansion deformation from the opening (12). The water stop material (M) is stably and firmly pressed by the elastic pressure of the hook piece (20) continuously and integrally extended from the channel frame (11) in this state. The waterproof material (M) does not accidentally move even when the concrete is subsequently joined.

This is completely achieved not only in the case of the horizontal plane of the concrete splicing section as shown in FIGS. 7 and 8, but also in the case of an inclined plane or a vertical plane as shown in FIG. Then, the bentonite particles (23) of the water-stopping material (M) embedded in the concrete by the joint are swelled and gelled in contact with water, so that the joint is stably water-stopped.

The mortar at the time of joining the concrete passes through the channel frame (11) and the mortar distribution windows (17) and (21) opened in the hook piece (20), and then the reinforcing bar (B) and the water stopping material ( M) smoothly spreads, and there is no possibility that the joint strength with the concrete (C) previously cast is reduced.

If the mooring tool (A) is made of the above stainless steel plate, there is no danger of rusting, and the mooring tool (A) itself can be buried in concrete for reinforcement.

FIGS. 14 to 21 relate to various modified embodiments of the present invention. As shown in the first modified embodiment of FIG. 14, the back surface (13) of the channel frame (11) and the left and right side surfaces (14) are shown.
Alternatively, the mortar flow windows (17a) and (17b) may be separately and independently opened.

As is apparent from the second modified embodiment shown in FIG. 15, the corners between the back surface (13) and the left and right side surfaces (14) forming the channel frame (11) are connected to the flat surface (1).
It is also possible to bend at an acute angle as an arc surface instead of 5). As shown in FIG. 15, the punching of the mortar flow windows (17) and (21) for one or both of the channel frame (11) and the hook piece (20) may be omitted.

As shown in the third modified embodiment of FIG. 16, a mortar flow window (17) is formed only in the left and right side surfaces (14) of the channel frame (11), and the back surface (13) is left. Thereby, it is also possible to use this as a fitting surface for the operator's hand when inserting and crimping the reinforcing bar (B).

As shown in FIG. 16, a pair of left and right hook pieces (20) are extended in parallel from the channel frame (11), and a hook piece (20) is formed between the left and right sides.
May function as a mortar distribution window (21).

In this case, although not shown, a difference in length is given to the overhang length of both hook pieces (20), and the water stop material (M) is formed by the mutual interaction between the long hook pieces and the short hook pieces. It is also conceivable to restrict the position to a position that cannot be shifted.

As is apparent from the fourth modified embodiment shown in FIG. 17, the auxiliary hook piece (24) for restraining the waterproof material (M) in combination with the overhanging tip of the hook piece (20) is provided with the hook. The piece (20) is continuously and integrally bent from the middle of the overhang, and the cutout on the bend is made through the mortar flow window (2).
It is also possible to form as 1).

As shown in a fifth modification of FIG.
A plurality of auxiliary hook pieces (24a) (24b) (24c) are continuously and integrally bent from the middle of the hook piece (20) overhang, and are stopped by adjacent ones including the overhanging tip of the hook piece (20). A plurality of the water materials (M) may be pressed and restrained in parallel on the surface of the concrete (C) so as to superimpose the water stopping action.

Further, as is apparent from the sixth modification of FIG. 19, a pair of left and right operation levers (25) are continuously and integrally extended rearward from near the opening (12) in the channel frame (11). The opening (12) of the channel frame (11) can be set to be widened by pulling and drawing the levers (25).
According to this, the attachment work to the rebar (B) can be performed more conveniently.

In this case, both levers (25) are bent toward the surface of the concrete (C) as in the seventh modification of FIG. 20, so that the tips of the levers (25) and the hook pieces (20) are bent. It is also conceivable that the water stop material (M) is determined so as to be restrained from being displaced by mutual interaction with the above.

Further, as in the eighth modification of FIG. 21, a pair of left and right hook pieces (20) are continuously and integrally extended rearward from the vicinity of the opening of the channel frame (11) to extend both hooks. It is also possible to press the waterproof material (M) against the surface of the concrete (C) with the piece (20).

The constructions shown in the first to eighth modified embodiments can be employed not only in each of them but also as a construction in which several kinds are freely combined. In short, a dovetail groove is formed from one metal plate having a spring property. It comprises a channel frame (11) formed in a mold, and a hook piece (20) continuously and integrally protruding rearward from the channel frame (11). The channel frame (11) is made of concrete (C). Deformed reinforcing bar for reinforcement (B)
The waterproof material (M), which is forcibly inserted from the opening (12) through the opening (12) and crimped, and extends in a state of intersecting with the reinforcing bar (B), is fixed to the concrete (C) by the hook piece (20). As long as the configuration is such that it is locked to the surface, it belongs to the scope of the present invention.

Since the other constructions in the various modified embodiments shown in FIGS. 14 to 21 are substantially the same as those in the basic embodiment shown in FIGS. 1 to 9, FIGS. Only the reference numerals are entered, and a detailed description thereof will be omitted.

[0043]

As described above, the mooring device (A) for a water stopping material of a concrete splicing part according to the present invention has a channel frame (D) formed from a single metal plate having a spring property. 1
1) and a hook piece (20) continuously and integrally protruding rearward from the channel frame (11), and the channel frame (11) is transformed into a reinforcing steel bar (B) for reinforcing concrete (C). The waterproofing material (M), which is forcibly inserted and crimped from the opening (12) and extends in an intersecting state with the reinforcing bar (B), is attached to the surface of the concrete (C) by the hook piece (20). Since the configuration is set so as to hold down the pressure, the problem of the prior art described at the beginning can be completely solved.

That is, the channel frame (11) which is inserted into the reinforcing deformed reinforcing bar (B) of the concrete (C) and crimped.
However, since it is formed in a dovetail shape from a single metal plate having spring properties, as long as it is forcibly inserted into the reinforcing bar (B) from its opening (12), its expanding deformation occurs. Due to the restoring elastic pressure, the pressure is integrated into the state of being held tightly on the reinforcing bar (B) by pressure bonding.

Since the hook piece (20) is continuously and integrally formed from the channel frame (11) in the direction opposite to the opening opposite to the opening (12), the hook piece (20) intersects with the reinforcing bar (B). Can be stably and firmly pressed against the surface of the concrete (C) by the elastic force of the hook piece (20).

Despite the fact that anyone can quickly attach the reinforcing bar (B) at the construction site in a one-touch operation without the need for a manual tool, the water-stopping material (M) is erroneously attached when concrete is connected. It can be securely fixed without fear of movement, and a highly stable water stopping effect can be obtained.

The structure required for this purpose is extremely simple, and it is sufficient to press work in stages from a single springy metal plate, so that the mass production effect can be maximized and a large amount of this kind of stop can be used. It can be said that it is extremely useful as the mooring device (A) for water materials.

In particular, if the configuration of claim 2 is adopted,
The mortar at the time of jointing concrete spreads through the mortar distribution windows (17) and (21) opened in the channel frame (11) and / or the hook piece (20), so that the mortar does not reduce the joint strength. is there.

If the configuration of claim 3 is adopted, the flapper-type insertion guide lip (16) that expands outward.
Accordingly, the operation of inserting the reinforcing bar (B) into the reinforcing bar (B) can be performed more smoothly and quickly, and there is an effect that injury to the operator's hand due to the punching edge of the opening (12) can be prevented.

If the structure of claim 4 is adopted, the back surface (13) of the channel frame (11) and the left and right side surfaces (1)
4) is bent at an acute angle through the flat surface (15), so that not only the possibility of the channel frame (11) rotating on the reinforcing bar (B) can be effectively prevented, but also the angular bending form. A stronger repulsive biasing force can be applied to the opening (12) of the channel frame (11).

If the structure of claim 5 is adopted, the opening (12) of the channel frame (11) can be expanded by pulling and squeezing the pair of left and right operation levers (25). This has the effect that the work can be more conveniently and stably attached to the reinforcing bar (B).

If the structure of claim 6 is adopted, the change in the thickness of the water-stopping material (M) and the change in the deviation of the bentonite particles (23) in the rope (22) are noticed.
In order to absorb these by the hook pieces (20) projecting in an inclined state from the channel frame (11), the water repellent material (M) is always given an effective elastic pressure so as to absorb the water repellent material (M). M) can be securely pressed down without fear of floating on the surface of concrete (C).

If the configuration of claim 7 is adopted, a hook piece (20) projecting from the channel frame (11),
The water-stopping material (M) can be more reliably restrained between the auxiliary hook pieces (24) attached thereto, which helps complete the water-stopping effect.

Further, if the configuration of claim 8 is adopted,
The concrete piece (C) is formed by the hook pieces (20) projecting the plurality of waterproof materials (M) from the channel frame (11) and the auxiliary hook pieces (24a) (24b) (24c) attached thereto. Since it can be pressed against the surface in a parallel state, it is possible to achieve a superimposition of the water stopping effect.

In particular, if the structure of claim 9 is adopted,
The large mortar flow window (17) opened in the channel frame (11) allows the mortar at the time of concrete splicing to spread more smoothly into the frame, and increases the bite strength between the mortar and the reinforcing bar (B). In addition to
The biting engagement force of the channel frame (11) with respect to the reinforcing bar (B) can be increased, and there is also an effect that positional displacement and play along the reinforcing bar (B) can be prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a basic embodiment of a mooring device for a water-stopping material according to the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is a rear view of FIG. 1;

FIG. 4 is a plan view of FIG. 1;

FIG. 5 is a side view of FIG. 1;

FIG. 6 is a sectional view taken along line 6-6 of FIG. 4;

FIG. 7 is a perspective view showing a use state of the mooring tool.

FIG. 8 is a side sectional view of FIG. 7;

FIG. 9 is a perspective view showing another use state corresponding to FIG. 7;

FIG. 10 is a perspective view showing a punching state of the mooring tool.

FIG. 11 is a perspective view showing a state of the primary bending process following FIG. 10;

FIG. 12 is a perspective view showing a state of the secondary bending process subsequent to FIG. 11;

FIG. 13 is a perspective view showing a final bending state following FIG. 12;

FIG. 14 is a perspective view showing a first modified example of the present invention.

FIG. 15 is a perspective view showing a second modified example of the present invention.

FIG. 16 is a perspective view showing a third modified example of the present invention.

FIG. 17 is a perspective view showing a fourth modified example of the present invention.

FIG. 18 is a perspective view showing a fifth modified example of the present invention.

FIG. 19 is a perspective view showing a sixth modified example of the present invention.

FIG. 20 is a perspective view showing a seventh modified example of the present invention.

FIG. 21 is a perspective view showing an eighth modified example of the present invention.

[Explanation of symbols]

 (11) · Channel frame (11a) · Channel frame piece (11b) · Channel frame piece (12) · Opening (13) · Back (14) · Left and right sides (15) · Flat surface (16) · Insert guide lip (17) · Mortar distribution window (17a) · Mortar distribution window (17b) · Mortar distribution window (20) · Hook piece (21) · Mortar distribution window (24) · Auxiliary hook piece (24a) · Auxiliary hook piece (24b) ) ・ Auxiliary hook piece (24c) ・ Auxiliary hook piece (25) ・ Operation lever (A) ・ Mooring tool (B) ・ Reinforcing bar (C) ・ Concrete (M) ・ Waterproof material (h) ・ Band width (w) ·Milestone

Claims (9)

(57) [Claims] 1. A channel frame (11) formed from a single metal plate having spring properties into a dovetail shape, and a hook piece (20) continuously and integrally projecting rearward from the channel frame (11). ). The channel frame (11) is forcibly inserted into the reinforcing deformed reinforcing bar (B) of the concrete (C) from its opening (12) and press-fitted, and crossed with the reinforcing bar (B). A water stopping material (M) extending to the surface of the concrete (C) is pressed by the hook piece (20). 2. A mortar flow window (17) (21) at the time of splicing of concrete (C) is formed on the plate surface of the channel frame (11) and / or hook piece (20). The mooring tool for a waterproof material of a concrete splicing part according to claim 1. 3. The concrete according to claim 1, wherein an opening edge of the channel frame (11) is formed as a guide lip (16) for insertion into the reinforcing bar (B), and is bent into a flapper type that expands outward. Mooring device for waterproof material at the joint. 4. A flat surface (1) is formed between the left and right side surfaces (14) and the back surface (13) forming the channel frame (11).
5. The method according to claim 1, wherein the light is refracted at an acute angle.
A mooring device for a waterproof material at a joint of concrete described in the above. 5. A pair of left and right operation levers (25) are continuously and integrally extended rearward from an opening edge of the channel frame (11), and the two channel levers (25) are drawn and drawn to operate the channel frame (11). The mooring device according to claim 1, wherein the opening (12) of (11) is widened. 6. A hook piece (20) continuously and integrally extended from the channel frame (11) is inclined so as to gradually approach the surface of the concrete (C) toward the overhanging tip. The mooring device for a waterproof material of a concrete splicing part according to claim 1. 7. An auxiliary hook piece (24) for restraining the water-stopping material (M) in combination with the projecting tip of the hook piece (20),
The mooring device for a waterproof material in a concrete splicing part according to claim 1, wherein the hook piece (20) is continuously and integrally bent from an intermediate portion of the hook piece (20). 8. A plurality of auxiliary hook pieces (24a) (24b) (24c) are continuously and integrally bent from an intermediate portion of the hook piece (20) overhang, and the adjacent hook piece (20) also includes an overhanging tip portion. The mooring device according to claim 1, characterized in that a plurality of waterproof materials (M) are restrained by matching each other. 9. A mortar flow window (17) at the time of splicing of concrete (C) is formed with a large opening so as to communicate with the left and right side surfaces (14) and the back surface (13) of the channel frame (11). The strip-shaped channel frame pieces (11
a) The band width (h) of (11b) is the same as or smaller than the joint (w) of the reinforcing bar (B), and the channel frame pieces (11a) (11b) are The mooring device for a waterproof material of a concrete splicing part according to claim 1, characterized in that it is set so as to bite and lock the joint (w) of the reinforcing bar (B).