JP7189841B2 - Waterstop connection aid and waterstop connection method - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water stop plate connection aid used when connecting water stop plates, and a method for connecting water stop plates.

Conventionally, in order to prevent water leakage from the joints of a concrete structure, strip-shaped water stop plates extending along the joints can be embedded in the concrete structure. This water stop plate is made of, for example, synthetic resin or rubber, and can be flexible.

An example of a technique for connecting the ends of a waterstop (in other words, a technique for adding a waterstop) is disclosed in Patent Document 1, for example. Patent Literature 1 discloses a technique of welding the ends of a water stop plate to each other.

Japanese Utility Model Publication No. 48-009676

However, the water stop plate welding technique disclosed in Patent Document 1 could not be used to connect the water stop plates extending in the mutually intersecting directions.

In view of such circumstances, the present invention provides a water stop connection aid that can be used when welding water stop plates extending in directions that intersect each other, and can weld the water stop plates together. It aims to provide a way to connect.

Therefore, in the water stop plate connection aid according to the present invention, the second water stop plate extending in the second direction intersecting the first direction is attached to the planned connection position of the first water stop plate extending in the first direction. It is used to connect the ends of water stop plates. A waterstop connection aid according to the present invention comprises a first connection auxiliary unit attached to a first waterstop, a second connection auxiliary unit attached to a second waterstop, and a first connection. a drawing mechanism provided to straddle the auxiliary unit and the second connection auxiliary unit to draw the second connection auxiliary unit toward the first connection auxiliary unit.

In the water stop plate connection method according to the present invention, a second water stop plate extending in a second direction that intersects the first direction is attached to a planned connection position of a first water stop plate that extends in a first direction. It is a method of connecting the ends of the plates. In the waterstop connecting method according to the present invention, the heater inserted between the planned connection position of the first waterstop and the end of the second waterstop is used to connect the first waterstop. The position and the end of the second water stop are heated, the heater is removed from between the heated connection planned position of the first water stop and the end of the second water stop, and the second By pulling the water stop plate toward the first water stop plate, the planned connection position of the first water stop plate and the end portion of the second water stop plate are welded to each other.

According to the water stop plate connection aid according to the present invention, the drawing mechanism can draw the second connection aid unit toward the first connection aid unit. Therefore, for example, while drawing the second water stop plate toward the first water stop plate using a pulling mechanism, the heater is operated at the planned connection position of the first water stop plate and the end of the second water stop plate. is sandwiched, and the heater heats and melts the connection planned position of the first water stop plate and the end of the second water stop plate, and after this melting, the heater is removed and the second water stop using the pulling mechanism By further drawing the water stop plate toward the first water stop plate, the planned connection position of the first water stop plate and the end portion of the second water stop plate can be welded to each other. Therefore, the water stop plate connection aid according to the present invention can be used when welding the first water stop plate and the second water stop plate extending in the directions intersecting each other.

According to the water stop plate connection method of the present invention, the first water stop plate and the second water stop plate extending in the directions that The end of the water stop plate is heated and melted, and after this melting, the heater is removed and the second water stop plate is pulled toward the first water stop plate, thereby connecting the first water stop plate The predetermined location and the end of the second water stop can be welded together. Therefore, by using the water stop plate connecting method according to the present invention, the first water stop plate and the second water stop plate extending in the mutually intersecting directions can be connected by welding.

The figure which shows the installation method of the horizontal water stop board in one Embodiment of this invention. The front view of the first connection auxiliary unit when the pull clamp is tilted to the right in the same embodiment. The front view of the first connection auxiliary unit when the pull clamp is in the neutral state in the same embodiment. The front view of the first connection auxiliary unit when the pulling clamp is tilted to the left in the same embodiment. AA sectional view of FIG. BB sectional view of FIG. The front view of the 2nd connection auxiliary unit in embodiment same as the above The right side view of the 2nd connection auxiliary unit in embodiment same as the above. The figure which shows the water stop plate connection method in embodiment same as the above The figure which shows the water stop plate connection method in embodiment same as the above The figure which shows the water stop plate connection method in embodiment same as the above

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a diagram showing a method of installing a horizontal water stop plate 2 in one embodiment of the present invention.

In this embodiment, a concrete dam body (concrete dam body) is described as an example of a concrete structure to which the water stop plate connection aid and the water stop plate connection method according to the present invention are applied. However, the structure is not limited to the dam body.
Further, in this embodiment, for convenience of explanation, the direction of the dam axis is defined as the left-right direction, and the upstream/downstream direction is defined as the front-rear direction, as shown in FIGS.

In general, when constructing a concrete dam body, concrete is placed in arbitrary areas in the axial direction and the height direction of the dam. A unit of dividing the area in the dam axis direction is called a "block", and a unit of dividing the area in the height direction is called a "lift". Here, FIG. 1 shows the dam axial length W for one block and the height H for one lift. The length W is, for example, about 15m. The height H is, for example, approximately 1.0 to 1.5 m.

In the construction of the dam body, a strip-shaped vertical water stop plate 1 is installed so as to straddle between blocks along the wall surface of the dam body. The vertical water stop plate 1 extends vertically. Here, since the vertical water stop plate 1 extends along the wall surface of the dam body, when the wall surface of the dam body is inclined in the front-rear direction, the vertical water stop plate 1 may also be inclined in the front-rear direction.

The vertical water stop plate 1 is made of, for example, synthetic resin or rubber, and may have flexibility. In this embodiment, the vertical water stop plate 1 is made of vinyl chloride (in other words, it is a polyvinyl chloride water stop plate (JIS K 6773)). For the installation of the vertical water stop plate 1, for example, the method disclosed in Japanese Patent Application Laid-Open No. 2012-202064 can be adopted.

Here, the vertical water stop plate 1 corresponds to the "first water stop plate" of the present invention, and the extending direction of the vertical water stop plate 1 corresponds to the "first direction" of the present invention. The extending direction (first direction) of the vertical water stop plate 1 includes the vertical direction.

In the construction of the dam body in this embodiment, a belt-shaped horizontal water stop plate 2 can be installed so as to straddle between the lifts. The horizontal water stop plate 2 extends in the left-right direction. The horizontal water stop plates 2 are installed so as to straddle the adjacent vertical water stop plates 1 with an interval in the left-right direction. The horizontal water stop plate 2 is made of, for example, synthetic resin or rubber, and can have flexibility. In this embodiment, the horizontal water stop plate 2 is made of vinyl chloride (in other words, it is a polyvinyl chloride water stop plate (JIS K 6773)).

Here, the horizontal water stop plate 2 corresponds to the "second water stop plate" of the present invention, and the extending direction of the horizontal water stop plate 2 corresponds to the "second direction" of the present invention. The extending direction (second direction) of the horizontal water stop plate 2 includes the horizontal direction. The extending direction of the horizontal water stop plate 2 (second water stop plate) is a direction intersecting with the extending direction (first direction) of the vertical water stop plate 1 .

In this embodiment, as shown in FIG. 1(a), a vertical water stop plate 1 is installed before the horizontal water stop plate 2 is installed. Here, FIG. 1(a) shows the lift upper surface (concrete placing surface) 3, and the vertical water stop plate 1 exposed on the lift upper surface 3 is supported by a support means (not shown). It extends vertically.

In the installation method of the horizontal water stop plate 2, as shown in FIG. These mounts 4 are for suspending and supporting the horizontal water stop plate 2 . Next, the horizontal water stop plate 2 is suspended and supported by these mounts 4 . Here, the length of the horizontal water stop plate 2 substantially matches the interval between the vertical water stop plates 1 adjacent in the left-right direction. Also, at this time, the installation height of the horizontal water stop plate 2 can be appropriately adjusted.

Next, the left end 2a and the right end 2b of the horizontal water stop plate 2 are connected to the planned connection positions 1a and 1b of the adjacent vertical water stop plate 1, respectively. In this embodiment, the left end portion 2a and the right end portion 2b of the horizontal water stop plate 2 and the planned connection positions 1a and 1b of the vertical water stop plate 1 are welded to each other to be connected. A water stop plate connection aid 7 is used to connect the vertical water stop plate 1 and the horizontal water stop plate 2 . Details of the configuration of the waterstop connection aid 7 and the waterstop connection method using the waterstop connection aid 7 will be described later with reference to FIGS. 2 to 11. FIG.

When the connection between the vertical water stop plate 1 and the horizontal water stop plate 2 is completed, the water stop plate connection aid 7 and the mounting frame 4 are removed, and concrete is placed for one lift. After the completion of this placement, approximately the upper half of the horizontal water stop plate 2 is exposed, and the rest is buried in concrete. Then, after a certain amount of time has passed, concrete is placed for one more lift. By placing the concrete, substantially the upper half of the horizontal water stop plate 2 is buried in the concrete.
The horizontal water stop plate 2 can be installed as described above.

Next, the configuration of the water stop plate connection aid 7 will be described with reference to FIGS. 2 to 8. FIG.
FIG. 2 is a front view of the first connection auxiliary unit 10 when the pulling clamp 31 is tilted to the right. FIG. 3 is a front view of the first connection auxiliary unit 10 when the pulling clamp 31 is in a neutral state. FIG. 4 is a front view of the first connection auxiliary unit 10 when the pulling clamp 31 is tilted leftward. FIG. 5 is a cross-sectional view taken along line AA of FIG. FIG. 6 is a cross-sectional view along BB in FIG. FIG. 7 is a front view of the second connection assistance unit 20. FIG. FIG. 8 is a right side view of the second connection assistance unit 20. FIG.

The water stop plate connection aid 7 includes a first connection aid unit 10 , a second connection aid unit 20 , a drawing mechanism 30 , and a guide portion 40 . The first auxiliary connection unit 10 is attached to the vertical water stop plate 1 . The second auxiliary connection unit 20 is attached to the horizontal water stop plate 2 . The pulling mechanism 30 is provided so as to straddle the first connection auxiliary unit 10 and the second connection auxiliary unit 20, and realizes the function of pulling the second connection auxiliary unit 20 toward the first connection auxiliary unit 10 side. (See FIGS. 9 and 10 described below). The guide part 40 is an end portion of the horizontal water stop plate 2 (left end portion 2 a , right end portion 2b) can be guided to the planned connection positions 1a and 1b of the vertical water stop plate 1. As shown in FIG.

As shown in FIGS. 2 to 6, the first connection auxiliary unit 10 includes a pair of left and right plate members 11, 11, a pair of upper and lower gripping devices 12, 12, a pull clamp mounting plate 13, and a bracket 14. Prepare.

The pair of left and right plate-like members 11, 11 are spaced apart from each other in the left-right direction and each extends in the up-down direction. Each upper end of the pair of left and right plate-like members 11, 11 is fixed to the front side member 12a of the gripping device 12 on the upper side. Each lower end portion of the pair of left and right plate-like members 11, 11 is fixed to the front side member 12a of the gripping device 12 on the lower side.

The gripping device 12 is configured to be able to grip the vertical water stop plate 1 so as to sandwich it from the front and rear. The gripping device 12 includes a front member 12a extending in the left-right direction, a rear member 12b extending in the left-right direction, a base end portion fixed to the right end portion of the front member 12a, and a right end portion of the rear member 12b at the tip portion. and a lock mechanism 12d for locking the gripping device 12 in the closed state. 12 d of locking mechanisms are comprised so that the left end part of the front side member 12a and the left end part of the rear side member 12b can be connected, when the holding|grip apparatus 12 is a closed state. By operating the operation lever 12e of the lock mechanism 12d, the lock mechanism 12d can be switched between the locked state and the unlocked state.

An arbitrary number of projections 12f are provided on surfaces (inner surfaces) of the front side member 12a and the rear side member 12b that face each other. The number and arrangement of the projections 12f can be determined according to the cross-sectional shape of the vertical water stop plate 1 used. Here, the vertical water stop plate 1 can be sandwiched between the front side member 12a and the rear side member 12b of the gripping device 12 from the front and rear.

With regard to the gripping device 12, when the gripping device 12 is in the closed state shown in FIGS. Device 12 can be in an open state.

A pull clamp mounting plate 13 is attached to the front surfaces of the pair of left and right plate-like members 11, 11 at the center in the vertical direction so as to straddle them. A pulling clamp 31 constituting a pulling mechanism 30 is swingably attached to the front surface of the pulling clamp mounting plate 13 .

The pulling clamp 31 has its base end pivotably attached to the pulling clamp mounting plate 13 and has a grip 31a at its tip end. A rod attachment portion 31b is provided in the vicinity of the grip 31a of the pulling clamp 31. As shown in FIG. A hook (not shown) at the right end of the rod 32 (see FIGS. 9 and 10) constituting the drawing mechanism 30 can be hooked on the rod attachment portion 31b.

A bracket 14 is provided on the upper front surface of the pair of left and right plate-like members 11 , 11 . Bracket 14 extends in the left-right direction. Tubular members 15 extending in the front-rear direction are attached to the lower sides of the left and right ends of the bracket 14 . Here, the bracket 14 and/or the tubular member 15 can be connected to an object (not shown) capable of supporting the first connection aid unit 10 .

Guide pipes 41 constituting a guide portion 40 are provided on the front surfaces of the pair of left and right plate-like members 11, 11 and above and below the pulling clamp mounting plate 13, respectively. The guide pipe 41 extends in the left-right direction and is open at both ends. A rod-shaped guide member 42 (see FIG. 7) constituting the guide portion 40 can be inserted into the guide pipe 41 (see FIGS. 9 and 10).

As shown in FIGS. 7 and 8, the second connection assistance unit 20 has a gripping device 21. As shown in FIGS. The gripping device 21 is configured to be able to grip the horizontal water stop plate 2 from the front and rear. The gripping device 21 includes a front member 21a extending in the vertical direction, a rear member 21b extending in the vertical direction, a base end portion fixed to the upper end portion of the front member 21a, and a distal end portion extending to the upper end of the rear member 21b. and a lock mechanism 21d for locking the gripping device 21 in the closed state. 21 d of locking mechanisms are comprised so that the lower end part of the front side member 21a and the lower end part of the rear side member 21b can be connected, when the holding|grip apparatus 21 is a closed state. By operating the operation lever 21e of the lock mechanism 21d, the lock mechanism 21d can be switched between the locked state and the unlocked state.

An arbitrary number of projections 21f are provided on surfaces (inner surfaces) of the front member 21a and the rear member 21b that face each other. The number and arrangement of the projections 21f can be determined by the cross-sectional shape of the horizontal water stop plate 2 used. Here, the horizontal water stop plate 2 can be sandwiched between the front side member 21a and the rear side member 21b of the gripping device 21 from the front and rear.

With regard to the gripping device 21, the locking mechanism 21d is unlocked in the closed state of the gripping device 21 shown in FIGS. The device 21 can be open.

A U-shaped hook 33 that constitutes the drawing mechanism 30 is attached to the front surface of the front member 21 a of the gripping device 21 at the center in the vertical direction. A hook (not shown) on the left end of the rod 32 (see FIGS. 9 and 10) can be hooked on the hook 33 .

A base end portion 42a of a guide member 42 is fixed above and below the hook portion 33 on the front surface of the front member 21a of the gripping device 21, respectively. The guide member 42 extends rightward from a base end portion 42a, and its tip end portion 42b has a tapered shape. Most of the guide member 42 protrudes to the right from the gripping device 21 .

Here, the second connection auxiliary unit 20 can be supported by the horizontal water stop plate 2 suspended by the frame 4 while the horizontal water stop plate 2 is held by the holding device 21 .

Next, a method of connecting the right end 2b of the horizontal waterstop 2 and the planned connection position 1b of the left edge of the vertical waterstop 1 using the waterstop connection aid 7, and the horizontal waterstop 2 9 to 11 in addition to FIGS. 9 to 11 show a water stop plate connection method in this embodiment. In particular, FIGS. 9 and 10 show a method of connecting the right end portion 2b of the horizontal water stop plate 2 and the planned connection position 1b of the left edge of the vertical water stop plate 1, and FIG. A method of connecting the left end portion 2a and the planned connection position 1a on the right edge of the vertical water stop plate 1 is shown.

In the waterstop connecting method of this embodiment, first, the vertical waterstop 1 and the horizontal waterstop 2 are arranged in the state shown in FIG. In a state where the planned connection position 1b on the left edge of the water plate 1 is slightly separated in the left-right direction, as shown in FIG. 2 is attached to the horizontal water stop plate 2. At this time, the bracket 14 and/or the tubular member 15 of the first connection aid unit 10 can be coupled to an object (not shown) capable of supporting the first connection aid unit 10 . Also, the second connection auxiliary unit 20 can be supported by the horizontal water stop plate 2 .

Here, as shown in FIG. 9(a), between the gripping device 12 on the upper side and the gripping device 12 on the lower side of the first connection auxiliary unit 10, the planned connection position 1b of the left edge of the vertical water stop plate 1 is provided. The first connection auxiliary unit 10 is attached to the vertical water stop plate 1 so that the . Further, as shown in FIG. 9A, the second connection auxiliary unit 20 is attached to the horizontal water stop plate 2 so that the right end portion 2b of the horizontal water stop plate 2 is adjacent to the longitudinal central portion of the guide member 42. It is attached.

Furthermore, when the pair of upper and lower guide members 42, 42 are inserted into the pair of upper and lower guide pipes 41, 41 (see FIGS. 9(a) to 10(d)), the left edge of the vertical water stop plate 1 is scheduled to be connected. The first connection auxiliary unit 10 is attached to the vertical waterstop 1 so that the position 1b and the right end 2b of the horizontal waterstop 2 are at the same height, and the second connection auxiliary unit 20 is attached to the horizontal waterstop. It is attached to the water plate 2.

Next, as shown in FIG. 9A, the right end hook of the rod 32 is hooked on the rod attachment portion 31b of the pull clamp 31, and the left end hook of the rod 32 is hooked on the hook portion 33. Next, as shown in FIG. As a result, a drawing mechanism 30 that draws the second connection assistance unit 20 toward the first connection assistance unit 10 side is provided so as to straddle the first connection assistance unit 10 and the second connection assistance unit 20 .

Next, as shown in FIGS. 9(a) and 10(c), the pull clamp 31 is tilted to the right side to pull the second connection auxiliary unit 20 toward the first connection auxiliary unit 10 side, and the pair of upper and lower The guide members 42 , 42 are inserted into the pair of upper and lower guide pipes 41 , 41 . At this time, a heater 50 (hot plate 51) is inserted from behind into the gap between the planned connection position 1b on the left edge of the vertical water stop plate 1 and the right end portion 2b of the horizontal water stop plate 2 to The heater 50 (hot plate 51) is sandwiched between the planned connection position 1b on the left edge of the plate 1 and the right end portion 2b of the horizontal water stop plate 2.

The heater 50 is generally known as a waterstop heater, a waterstop welder, a waterstop welder, or the like. It comprises a handle (not shown) attached to and grippable by an operator, and an electric wire (not shown) for supplying electric power to the heating wire.

Next, while the heater 50 (heat plate 51) is sandwiched between the planned connection position 1b on the left edge of the vertical water stop plate 1 and the right end portion 2b of the horizontal water stop plate 2, the left edge of the vertical water stop plate 1 is The planned connection position 1b and the right end portion 2b of the horizontal water stop plate 2 are heated by the heater 50 (hot plate 51) and melted.

After this melting, as shown in FIG. 10(d), the heater 50 (hot plate 51) is placed between the planned connection position 1b on the left edge of the vertical water stop plate 1 and the right end portion 2b of the horizontal water stop plate 2. At the same time, the pull clamp 31 is further tilted to the right side to further draw the second connection auxiliary unit 20 toward the first connection auxiliary unit 10 side. The right end portion 2b of the water plate 2 is welded together. At the time of drawing, the guide portion 40 (the guide pipe 41 and the guide member 42) guides the right end portion 2b of the horizontal water stop plate 2 to the planned connection position 1b on the left edge of the vertical water stop plate 1. FIG.

In this manner, the right end portion 2b of the horizontal water stop plate 2 and the planned connection position 1b on the left edge of the vertical water stop plate 1 can be connected.

Here, in FIG. 10(d), the planned connection position 1b on the left edge of the vertical water stop plate 1 and the right end portion 2b of the horizontal water stop plate 2 adjacent on the right side thereof are connected, and the vertical water stop plate 1 and the horizontal water stop plate 2 are connected in a T-shape.

Next, the second connection auxiliary unit 20 and the rod 32 are removed from the state shown in FIG. 10(d). Then, while the second connection auxiliary unit 20 is turned upside down and left to right, as shown in FIG. The second connection auxiliary unit 20 is attached to the horizontal water stop plate 2 so that the portion 2a is adjacent. 9(a) to 10(d), the left end portion 2a of the horizontal water stop plate 2 and the vertical The planned connection position 1a on the right edge of the water stop plate 1 can be connected.

Here, FIG. 11(f) shows the planned connection positions 1a and 1b on the left and right side edges of one vertical water stop plate 1, and the right end portion 2b and the left end portion 2a of the horizontal water stop plate 2 adjacent on both left and right sides. are connected, and the vertical water stop plate 1 and the horizontal water stop plate 2 are connected in a cross shape.

According to the present embodiment, the waterstop connection aid 7 is attached to the planned connection positions 1a and 1b of the vertical waterstop 1 (first waterstop) extending in the first direction (for example, the vertical direction). It is used when connecting the ends 2a and 2b of the horizontal water stop plate 2 (second water stop plate) extending in the second direction (for example, horizontal direction) that intersects the first direction. The water stop plate connection aid 7 includes a first connection support unit 10 attached to the vertical water stop plate 1, a second connection support unit 20 attached to the horizontal water stop plate 2, and the first connection support unit 10. and a second connection auxiliary unit 20, and a pulling mechanism 30 for pulling the second connection auxiliary unit 20 toward the first connection auxiliary unit 10 side. Therefore, for example, while drawing the horizontal water stop plate 2 to the vertical water stop plate 1 side using the drawing mechanism 30, the planned connection positions 1a and 1b of the vertical water stop plate 1 and the end portions 2a and 2b of the horizontal water stop plate 2 are adjusted. A heater 50 (hot plate 51) is sandwiched between and heats and melts the planned connection positions 1a and 1b of the vertical water stop plate 1 and the end portions 2a and 2b of the horizontal water stop plate 2 with the heater 50. Later, the heater 50 is removed and the drawing mechanism 30 is used to further draw the horizontal water stop plate 2 toward the vertical water stop plate 1 side. The ends 2a, 2b can be welded together. Therefore, the water stop plate connection aid 7 can be used when welding the vertical water stop plate 1 and the horizontal water stop plate 2 extending in directions intersecting each other.

Further, according to the present embodiment, the water stop plate connection aid 7 is drawn toward the vertical water stop plate 1 by the drawing mechanism 30 pulling the second connection support unit 20 toward the first connection support unit 10 side. A guide part 40 capable of guiding the ends 2a, 2b of the horizontal water stop plate 2 to the planned connection positions 1a, 1b of the vertical water stop plate 1 is further provided. As a result, the ends 2a and 2b of the horizontal water stop plate 2 can be connected to the planned connection positions 1a and 1b of the vertical water stop plate 1 with high accuracy.

Further, according to this embodiment, the second connection auxiliary unit 20 can be supported by the horizontal water stop plate 2 . Therefore, there is no need to separately prepare an object for supporting the second connection auxiliary unit 20, and the configuration can be simplified.

Further, according to the present embodiment, the water stop plate connection method is such that the first water stop plate 1 (first water stop plate) extending in the first direction (for example, the vertical direction) is connected at the planned connection positions 1a and 1b. This is a method of connecting ends 2a and 2b of a horizontal water stop plate 2 (second water stop plate) extending in a second direction (for example, horizontal direction) that intersects the first direction. In this waterstop connecting method, a heater 50 (hot plate 51) inserted between the planned connection positions 1a and 1b of the vertical waterstop 1 and the ends 2a and 2b of the horizontal waterstop 2 is used to connect the vertical waterstop. The planned connection positions 1a and 1b of the water plate 1 and the ends 2a and 2b of the horizontal water stop plate 2 are heated, and the heated planned connection positions 1a and 1b of the vertical water stop plate 1 and the horizontal water stop plate 2 are heated. By removing the heater 50 from between the end portions 2a and 2b and drawing the horizontal water stop plate 2 toward the vertical water stop plate 1 side, the planned connection positions 1a and 1b of the vertical water stop plate 1 and the horizontal water stop plate 2 are welded to each other. By using this water stop plate connecting method, the vertical water stop plate 1 and the horizontal water stop plate 2 extending in directions intersecting each other can be connected by welding.

In this embodiment, the water stop plate connection aid 7 is used when connecting the vertical water stop plate 1 and the horizontal water stop plate 2 by welding. It is also possible to use the water stop plate connection aid 7 when connecting the water plate 2 by adhering it with an adhesive or the like.

In this embodiment, after the right end portion 2b of the horizontal water stop plate 2 and the planned connection position 1b on the left edge of the vertical water stop plate 1 are connected, the left end portion 2a of the horizontal water stop plate 2 and the vertical water stop plate 1 are connected. is connected to the planned connection position 1a on the right edge of the line, but it goes without saying that the order of these connections may be reversed. That is, after the left end portion 2a of the horizontal water stop plate 2 and the planned connection position 1a on the right side edge of the vertical water stop plate 1 are connected, the right end portion 2b of the horizontal water stop plate 2 and the left side edge of the vertical water stop plate 1 are connected. may be connected to the planned connection position 1b. Alternatively, using a plurality of waterstop connection aids 7, the connection between the left end 2a of the horizontal waterstop 2 and the planned connection position 1a of the right edge of the vertical waterstop 1, and the right end of the horizontal waterstop 2 The connection between the portion 2b and the planned connection position 1b on the left edge of the vertical water stop plate 1 may be performed in parallel (in other words, at the same time).

The water stop plate connection aid 7 in this embodiment is used when connecting the vertical water stop plate 1 and the horizontal water stop plate 2 in a T shape (see FIG. 10 (d)) or in a cross shape (see FIG. 11 (f)). The T-shaped connecting portion and the cross-shaped connecting portion can be welded by melting the entire cross section, and the strength (quality) of the welded portion can be reliably secured.

By using the water stop plate connection aid 7 in this embodiment, even a non-skilled engineer can easily connect the vertical water stop plate 1 and the horizontal water stop plate 2 in a T shape or in a cross shape. You can

In the present embodiment, a concrete dam body will be described as an example of a concrete structure to which the waterstop connecting aid and waterstop connecting method according to the present invention are applied. It is not limited to the body, and may be, for example, a retaining wall.

The illustrated embodiments are merely illustrative of the present invention, and the present invention includes various improvements and modifications made by those skilled in the art within the scope of the claims in addition to those directly indicated by the described embodiments. It goes without saying that it is inclusive.

1 Vertical waterstop 1a, 1b Connection planned position 2 Horizontal waterstop 2a Left end 2b Right end 3 Upper surface of lift 4 Base 7 Waterstop connection auxiliary tool DESCRIPTION OF SYMBOLS 10... 1st connection auxiliary unit, 11... Plate-shaped member, 12... Gripping device, 12a... Front side member, 12b... Rear side member, 12c... Arm member, 12d... Lock mechanism, 12e... Operation lever, 12f... Protrusion, Reference Signs List 13 Pull clamp mounting plate 14 Bracket 15 Tubular member 20 Second connection auxiliary unit 21 Gripping device 21a Front member 21b Rear member 21c Arm member 21d Lock mechanism , 21e... operation lever, 21f... projection, 30... pulling mechanism, 31... pull clamp, 31a... grip, 31b... rod attachment part, 32... rod, 33... hook part, 40... guide part, 41... guide pipe, 42 ... Guide member 42a ... Base end portion 42b ... Tip portion 50 ... Heater 51 ... Hot plate

Claims (5)

Used when connecting an end of a second water stop plate extending in a second direction that intersects with the first direction to a connection planned position of a first water stop plate extending in the first direction A water stop plate connection aid,
a first connection auxiliary unit attached to the first water stop plate;
a second connection auxiliary unit attached to the second water stop plate;
a drawing mechanism provided to straddle the first connection auxiliary unit and the second connection auxiliary unit to draw the second connection auxiliary unit toward the first connection auxiliary unit;
A waterstop connection aid. further comprising a guide part capable of guiding an end portion of the second water stop plate drawn toward the first water stop plate by the drawing by the pulling mechanism to a planned connection position of the first water stop plate; The water stop plate connection aid according to claim 1. The waterstop connection aid according to claim 1 or 2, wherein said second connection auxiliary unit can be supported by said second waterstop. The waterstop connection aid according to any one of claims 1 to 3, wherein the first direction includes a vertical direction and the second direction includes a horizontal direction. A method of connecting an end portion of a second water stop plate extending in a second direction intersecting the first direction to a connection planned position of a first water stop plate extending in the first direction. hand,
A heater inserted between the planned connection position of the first water stop plate and the end of the second water stop plate causes the planned connection position of the first water stop plate and the second water stop plate to be connected. heating the edges of the plate and
The heater is removed from between the connection planned position of the heated first water stop and the end of the second water stop, and the second water stop is moved to the first water stop. The planned connection position of the first water stop plate and the end of the second water stop plate are welded to each other by drawing them toward the plate side.
Waterstop connection method.

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