JP6491306B1 - Water blocking plate, water blocking structure using water blocking plate, and water blocking method using water blocking plate - Google Patents

Abstract

[PROBLEMS] To provide a water blocking board which can be easily disposed at a connection part of a concrete structure, a water blocking structure using a water blocking board, and a water blocking method using a water blocking board. With the goal.
SOLUTION: The water blocking board of the present invention is provided at a junction J extending between two concrete layers C1 and C2, and is used to prevent water from advancing through the junction J. The water plate 1 is characterized by including a reinforcing layer 2 formed in a lattice shape and having a plurality of through holes 21 and an adhesive layer 3 covering the reinforcing layer 2. In the water blocking structure of the present invention, a first concrete layer C1, a second concrete layer C2 to be connected to the first concrete layer C1, a first concrete layer C1, and a second concrete layer C2 are provided. And the water blocking plate 1 disposed so as to intersect the junction J extending therebetween.
[Selected figure] Figure 1

Description

  The present invention relates to a water blocking plate, a water blocking structure using the water blocking plate, and a water blocking method using the water blocking plate.

  In order to suppress the progress of water from the outside to the inside of the concrete structure conventionally through the joint portion formed between two concrete layers of the concrete structure, for example, the water stop disclosed in Patent Document 1 A plate 100 (see FIG. 5) is used. The water blocking plate 100 includes a reinforcing layer formed of metal such as zinc and an adhesive layer formed of non-vulcanized butyl rubber and the like. After the water blocking board is held by reinforcing bars, two concrete layers are placed around it and embedded in the joint between the two concrete layers.

  As shown in FIG. 5, the water blocking plate 100 is provided with an insertion hole 101 at a predetermined interval, and is reinforced at an interval by a binding wire 110 such as a numbered line inserted in the insertion hole 101. Attached to the rebar 120 for Since the water blocking plate 100 includes a reinforcing layer formed of metal or the like, it is difficult to form the insertion hole 101 at the construction site of the concrete structure, and the insertion hole 101 is formed in advance in the manufacturing plant of the water blocking plate 100. Ru.

JP-A-59-96349

  However, the insertion holes 101 formed in advance are not necessarily located at positions adjacent to the reinforcing bars 120 because the distance between the laid reinforcing bars 120 differs depending on the construction site. Therefore, as shown in FIG. 5, it is difficult to attach the water blocking plate 100 to the reinforcing bar 120 by the binding wire 110 because some of the insertion holes 101 are at a distance from the reinforcing bar 120. It is difficult to arrange the water blocking plate 100 at the junction.

  The present invention has been made in view of the above problems, and a water blocking board that can be easily disposed at a junction of a concrete structure, a water blocking structure using the water blocking board, and a water blocking using the water blocking board The purpose is to provide a construction method.

  The water blocking board of the present invention is a water blocking board provided at a junction extending between two concrete layers and used to suppress the progress of water through the junction, the grid having a grid shape. And a reinforcing layer having a plurality of through holes, and an adhesive layer covering the reinforcing layer.

  Moreover, it is preferable that the unevenness | corrugation along the grating | lattice of the said reinforcement layer is formed in the said adhesion layer.

  Further, the reinforcing layer includes a plurality of first rod-shaped members extending in a first direction, and a plurality of second rod-shaped members extending in a second direction intersecting the first direction, and the plurality of reinforcing layers Preferably, a first rod-like member is disposed on the plurality of second rod-like members.

  The water blocking structure of the present invention extends between a first concrete layer, a second concrete layer to be hammered into the first concrete layer, and the first concrete layer and the second concrete layer. And the water blocking plate disposed to cross the junction.

  The water blocking method according to the present invention is a water blocking method using the above-mentioned water blocking plate, which comprises the steps of laying a plurality of reinforcing bars at intervals and adjacent to each of the laid plurality of reinforcing bars, A step of providing an insertion hole in the water blocking plate along a through hole of the reinforcement layer of the water blocking plate, binding the tie wire inserted into the insertion hole to each of the plurality of reinforcing bars, and Attaching a second concrete layer to the reinforcing bar adjacent to the first concrete layer, placing the first concrete layer to the vicinity of the middle region of the water blocking plate, and And b) joining the second concrete layer to the first concrete layer.

  According to the present invention, it is possible to provide a water blocking board which can be easily disposed in a connection portion of a concrete structure, a water blocking structure using the water blocking board, and a water blocking method using the water blocking board. it can.

It is a perspective view which shows the water stop structure which concerns on one Embodiment of this invention. It is a surface view of a water stop board concerning one embodiment of the present invention. It is a reverse view of the water stop board of FIG. 2A. It is the IIa-IIa sectional view taken on the line of FIG. 2A. It is the IIb-IIb sectional view taken on the line of FIG. 2A. It is a surface view of the reinforcement layer of the water stop board of FIG. 2A. It is the IIIa-IIIa sectional view taken on the line of FIG. 3A. It is the IIIb-IIIb sectional view taken on the line of FIG. 3A. It is a figure which shows the state in which the water stop board of FIG. 2A was attached to the reinforcement. It is a figure which shows the state in which the conventional water stop board was attached to the reinforcement.

  Hereinafter, with reference to the drawings, a water blocking plate according to an embodiment of the present invention, a water blocking structure using the water blocking plate, and a water blocking method using the water blocking plate will be described. However, the embodiments described below are merely examples, and the water blocking plate, the water blocking structure, and the water blocking method of the present invention are not limited to the following embodiments.

  The water blocking plate 1 of the present embodiment is provided at the joining portion J extending between two concrete layers C1 and C2 as shown in FIG. 1 and suppresses the progress of water through the joining portion J. Used for Below, although the water stop board 1 is demonstrated taking the water stop structure W using the water stop board 1 of this embodiment as an example, the water stop board 1 of this invention is limited to the following example. However, it can also be used in other applications where it is necessary to suppress the progression of water through the junction J.

  As shown in FIG. 1, the water blocking structure W of the present embodiment includes a first concrete layer C1, a second concrete layer C2 to be connected to the first concrete layer C1, and a first concrete layer C1. And the second concrete layer C2 are provided with a water blocking plate 1 disposed so as to cross the junction J extending. The water blocking structure W is applied to the concrete structure to suppress the entry of water from the outside to the inside of the concrete structure through the joint portion J. The concrete structure to which the water blocking structure W is applied is not particularly limited as long as it is a concrete structure in which the joint portion J is formed between two concrete layers C1 and C2, for example, an underground structure Objects, retaining walls, piers, abutments, buildings, etc. are illustrated.

  In the water blocking structure W, in the present embodiment, the first concrete layer C1 is a water blocking plate in a state in which the water blocking plate 1 is held so as to intersect with the extending direction of the junction J formed later. After the first concrete layer C1 is hardened, the second concrete layer C2 is formed by being placed on the first concrete layer C1 and being connected. In the present embodiment, as shown in FIG. 1, the water blocking structure W further includes a plurality of reinforcing bars R which are laid apart from each other to reinforce the first and second concrete layers C1 and C2. Have. The water blocking plate 1 is attached to and held by the reinforcing rebar R via the binding wire B before the first and second concrete layers C1, C2 are placed. However, the water blocking plate 1 only needs to be held so as to be disposed in the joining portion J, and may be held by a member other than the reinforcing bar R.

  The first and second concrete layers C1 and C2 are not particularly limited, and are formed of, for example, a known concrete material. The first and second concrete layers C1, C2 are arranged adjacent to each other such that a joint J is formed between each other. In the present embodiment, since the first and second concrete layers C1 and C2 are cast at a time interval from each other, junctions J are formed between each other. However, if the first and second concrete layers C1 and C2 are provided adjacent to each other so that the joint J is formed between each other, the constituent material and the method of placing are particularly limited. There is no.

  Reinforcing bars R are members to be laid for reinforcing the first and second concrete layers C1 and C2. The intervals and the number of the reinforcing bars R are appropriately set in accordance with the strength required for the first and second concrete layers C1 and C2. The reinforcing bars R are not particularly limited as long as they have strength to reinforce the first and second concrete layers C1 and C2, and, for example, known reinforcing bars are used.

  The binding line B is a member for binding the water blocking plate 1 to the reinforcing bar R and holding it. The binding line B is not particularly limited as long as the water blocking plate 1 can be held by the reinforcing bar R even if the water blocking plate 1 receives a force by the concrete flow at the time of placing the concrete layers C1 and C2. For example, known numbers can be used.

  The water blocking plate 1 is provided at the joining portion J extending between the two concrete layers C1 and C2, and suppresses the progress of water through the joining portion J. In the present embodiment, the water blocking plate 1 is formed in a substantially plate shape as a whole as shown in FIG. 1, and the two concrete layers C1 are formed such that the plate surfaces intersect in the extending direction of the joining portion J. , Embedded in C2. However, the water blocking plate 1 only needs to be capable of suppressing the progress of water through the joining portion J, and the shape and the arrangement thereof are not particularly limited.

  The water blocking plate 1 is provided with a reinforcing layer 2 and an adhesive layer 3 covering the reinforcing layer 2 as shown in FIGS. 1, 2C and 2D. Although the water blocking plate 1 is not shown, a known release paper may be provided on the surface of the adhesive layer 3 before being embedded in the two concrete layers C1 and C2.

  The reinforcing layer 2 supports the adhesive layer 3 and imparts rigidity to the water blocking plate 1. In the reinforcing layer 2, when the first and second concrete layers C1 and C2 are cast after the water blocking plate 1 is held in advance by the plurality of reinforcing bars R, the water blocking plate 1 is deformed by the concrete flow Restrain The reinforcing layer 2 is formed in a lattice shape and has a plurality of through holes 21 as shown in FIGS. 3A to 3C. By forming the reinforcing layer 2 in a lattice shape and having the plurality of through holes 21, the insertion holes 11 (see FIG. 4) can be easily provided in the necessary place of the water blocking plate 1 or in the vicinity thereof. Therefore, as shown in FIG. 4, the water blocking plate 1 can easily provide the insertion holes 11 at positions adjacent to each of the plurality of reinforcing bars R, for example, even at a construction site. Since the binding wire B to be inserted into the insertion hole 11 can be easily bound to the reinforcing rod R by the insertion hole 11 being adjacent to the reinforcing rod R, the water blocking plate 1 can be easily attached to the reinforcing rod R, Thereby, the water blocking plate 1 can be easily disposed at the junction J. Furthermore, the reinforcing layer 2 is formed in a lattice shape, and by having a plurality of through holes 21, processing such as cutting and bending is easier than in the case where the reinforcing plate 2 is formed in a solid plate shape. Can be easily deformed into a shape suitable for

  In the present embodiment, as shown in FIGS. 3A to 3C, the reinforcing layer 2 intersects the plurality of first rod-like members 22 extending in the first direction D1 and the first direction D1 (the illustrated example And a plurality of second rod-like members 23 extending in the second direction D2 orthogonal to each other. By arranging the plurality of first and second rod-like members 22 and 23 in a lattice, the reinforcing layer 2 is formed in a lattice and penetrating between the first and second rod-like members 22 and 23, respectively. Holes 21 are formed. In the present embodiment, the plurality of first and second rod-like members 22 and 23 are arranged at equal intervals to one another, and the through holes 21 having a substantially square outline are formed. However, as long as the plurality of first and second rod-like members 22 and 23 are arranged in a lattice, the plurality of first and second rod-like members 22 and 23 may not be limited to the present embodiment. The first and second directions D1 and D2 may not be linear but curved. Further, in the present embodiment, the plurality of first rod-shaped members 22 are disposed on the plurality of second rod-shaped members 23. That is, the plurality of first rod-like members 22 are disposed on one side of the plurality of second rod-like members 23 in the third direction D3 orthogonal to the first and second directions D1 and D2. Therefore, the third direction of the first rod-like member 22 with respect to the second rod-like member 23 on one surface side (left side in FIG. 3B) of the reinforcing layer 2 on which the first rod-like member 22 is disposed. At the other surface side (lower side in FIG. 3C) of the reinforcing layer 2 on which the second rod-like member 23 is disposed, a step is generated by the height of D3 with respect to the first rod-like member 22. There is a level difference by the height of the third direction D3 of the bar-like member 23 of FIG. Thereby, as will be described in detail later, when the reinforcing layer 2 is covered with the adhesive layer 3, the unevenness of the adhesive layer 3 becomes large (the height difference between the concave portion 31 and the convex portion 32 becomes large, see FIGS. 2C and 2D). ). However, the plurality of first and second rod-like members 22 and 23 may be disposed in a lattice, and may be disposed at the same height (on the same plane) in the third direction D3.

  As long as the first and second rod-like members 22 and 23 forming the reinforcing layer 2 are formed in a rod-like shape, the cross-sectional shape is not particularly limited, and may have any cross-sectional shape . In the present embodiment, the first rod-like member 22 is formed in a substantially cylindrical shape having a substantially circular cross section as shown in FIG. 3B, and the second rod-like member 23 has a cross section as shown in FIG. 3C. Is formed in a substantially square columnar shape. Since the rod-like member is formed in a substantially cylindrical shape (FIG. 2C), it can be roughly formed into a substantially square prism so that FIG. 2C and FIG. 2D showing a state in which the reinforcing layer 2 is covered with the adhesive layer 3 can be compared well. As compared to the case where the adhesive layer 3 is formed (FIG. 2D), the adhesive layer 3 is easily curved along the outer edge of the rod-like member, so that the unevenness formed on the adhesive layer 3 becomes larger.

  There are no particular limitations on the diameter and the distance between the first and second rod-like members 22 and 23 forming the reinforcing layer 2, and the strength required for the reinforcing layer 2 and the size of the necessary through holes, etc. It can be set as appropriate. For example, the diameter of the substantially circular cross section of the first rod-like member 22 is preferably 1.0 to 3.0 mm, more preferably 1.4 to 2.6 mm, and still more preferably 1.8 to 2.2 mm. 1.0 to 3.0 mm is preferable, as for one side of the substantially square cross section of the 2nd rod-shaped member 23, 1.4 to 2.6 mm is more preferable, and 1.8 to 2.2 mm is still more preferable. Moreover, as for the grain size of the reinforcement layer 2 formed in a grid | lattice form, it is preferable that it is 5-20 mm x 5-20 mm, It is more preferable that it is 7-16 mm x 7-16 mm, 9-12 mm x 9-12 mm Even more preferably,

  The reinforcing layer 2 is not particularly limited as long as it has a rigidity that can suppress the deformation of the water blocking plate 1 due to the flow of concrete, and for example, a resin such as high density polyethylene or polyvinyl chloride (PVC) And metals such as zinc and iron. Among them, high density polyethylene can be suitably adopted from the viewpoint of weight reduction and processability.

  The adhesive layer 3 adheres to the two concrete layers C1 and C2 to suppress the flow of water through the joining portion J. The adhesive layer 3 covers the reinforcing layer 2 including the through holes 21 (see FIG. 3A) of the reinforcing layer 2 as shown in FIGS. 2A to 2D. The adhesive layer 3 is disposed at the joining portion J between the two concrete layers C1 and C2 together with the reinforcing layer 2 to adhere to the two concrete layers C1 and C2 so that water flows through the joining portion J Restrain In the present embodiment, the adhesive layer 3 is formed in a film shape having a substantially uniform film thickness, and is attached to both surfaces of the reinforcing layer 2. The adhesive layer 3 covers the entire surface of the reinforcing layer 2 in the present embodiment, but it is sufficient that the adhesive layer 3 can cover at least the portion of the reinforcing layer 2 corresponding to the position of the joining portion J. Only one side may be coated, or only a part corresponding to the position of the joint J may be coated. Moreover, as long as the adhesion layer 3 can coat the reinforcement layer 2, the film thickness may not be uniform.

  In the present embodiment, as shown in FIGS. 2A to 2D, in the adhesive layer 3, asperities along the lattice of the reinforcing layer 2 are formed. By forming unevenness on the surface of the adhesive layer 3, the surface area is increased and the adhesive force with the concrete layers C 1 and C 2 is improved as compared with the case where the adhesive layer 3 is formed flat. Thereby, the adhesion layer 3 can further suppress the progress of water through the joining portion J.

  In the present embodiment, as described above, the plurality of first rod-shaped members 22 of the reinforcing layer 2 are disposed on the plurality of second rod-shaped members 23 (see FIGS. 3A to 3C). As a result, the adhesive layer 3 is more uneven as compared to the case where the first and second rod-like members 22 and 23 are arranged at the same height (on the same plane) in the third direction D3. It becomes larger (the height difference between the concave portion 31 and the convex portion 32 becomes larger, see FIGS. 2C and 2D). Since the surface area of the adhesive layer 3 is further increased by making the unevenness of the adhesive layer 3 larger, the adhesive force between the adhesive layer 3 and the concrete layers C1 and C2 is further improved, and the water passing through the joint J Progress can be further suppressed.

  In the adhesive layer 3, the plurality of first rod-shaped members 22 of the reinforcing layer 2 are disposed on the plurality of second rod-shaped members 23, whereby the first rod-shaped members 22 of the reinforcing layer 2 are disposed. On one surface side, as shown in FIG. 2A, asperities are formed along the first rod-shaped member 22 extending in the first direction D1. In addition, on the other side of the reinforcing layer 2 on which the second rod-like member 23 is disposed, the adhesive layer 3 extends along the second rod-like member 23 extending in the second direction D2, as shown in FIG. 2B. Unevenness is formed. Thus, by forming the unevenness extending in one direction on the front and back surfaces of the water blocking board 1, the air between the adhesive layers 3 and 3 on the front and back surfaces is easily released, and the adhesive layers 3 and 3 on the front and back surfaces Accumulation of air is suppressed. In addition, as described above, in the present embodiment, the adhesive layers 3 and 3 on the front and back surfaces of the water blocking plate 1 are formed with asperities extending in directions intersecting with each other. Here, when the adhesive layer 3 has irregularities extending in one direction, the direction in which the irregularities of the adhesive layer 3 extend is greater than the direction in which the irregularities of the adhesive layer 3 extend on the adhesive surface of the adhesive layer 3 and the concrete layers C1 and C2. The direction intersecting the direction has a large opposing force to the shear stress received. In the present embodiment, since the extending direction of the unevenness of the adhesive layers 3 and 3 intersects on the front and back surfaces of the water blocking plate 1, it is possible to counter the shear stress in the direction crossing on the front and back surfaces of the water blocking plate 1 The adhesion between the adhesive layer 3 and the concrete layers C1 and C2 can be improved.

  As the adhesive layer 3 is shown by FIG. 2C and FIG. 2D, the 1st rod-shaped member 22 of the reinforcement layer 2 is formed in a substantially cylindrical shape, and the 2nd rod-shaped member 23 is formed in a substantially square pole shape. The one side (left side in FIG. 2C) on which the first rod-like member 22 is provided is formed more than the other side (lower side in FIG. 2D) on which the second rod-like member 23 is provided. There are large irregularities. Thus, by making the cross-sectional shapes of the first rod-like member 22 and the second rod-like member 23 of the reinforcing layer 2 different, the sizes of the unevenness of the adhesive layer 3 on the front and back of the water blocking plate 1 are made different. be able to. For example, as shown in FIG. 1, a substantially cylindrical first rod-like member 22 is provided, and one surface side (the left side in FIG. 1) of the water blocking plate 1 in which the unevenness of the adhesive layer 3 is relatively large. The adhesive force between the adhesive layer 3 and the concrete layers C1 and C2 on the water entering side by arranging the water on the side (left side in FIG. 1) where water enters from the outside through the joining portion J Can be further improved, and the progress of water through the joining portion J can be more effectively suppressed.

  The material which comprises the adhesion layer 3 has the adhesiveness which adheres with concrete. The material having adhesiveness is not particularly limited, and non-vulcanized butyl rubber and the like are suitably used. Moreover, the adhesion layer 3 should just be able to coat the reinforcement layer 2 including the through-hole 21 of the reinforcement layer 2, and the thickness in particular is not limited, but the water blocking plate 1 is a concrete layer C1, It is preferable to have pressure resistance that suppresses formation of a hole in the vicinity of the joining portion J when being embedded in C2. For example, the thickness of the adhesive layer 3 is preferably 0.4 mm or more, more preferably 0.6 mm or more, and still more preferably 0.8 mm or more.

  Below, the water stop construction method using the water stop board of this embodiment is demonstrated. However, the water stopping method of the present invention is not limited to the following description.

  The water stop method of this embodiment is a water stop method using the water stop plate 1 described above. The water stop method is used to suppress the progression of water through the junction J between the two concrete layers C1, C2.

  The water stop method includes the steps of laying a plurality of reinforcing bars R at intervals, as shown in FIGS. 1 and 4. The reinforcing bars R are laid to reinforce the concrete layers C1, C2 to be cast later. The interval and the number of reinforcing bars R to be laid are not particularly limited, and are appropriately set according to the required strength of the concrete layers C1 and C2.

  In addition, as shown in FIG. 4, the water blocking method also includes water blocking along the through holes 21 (see FIG. 3A) of the reinforcing layer 2 of the water blocking plate 1 adjacent to each of the plurality of rebars R laid. The process of providing the penetration hole 11 in the board 1 is included. Since the reinforcing layer 2 is formed in a lattice shape and has a plurality of through holes 21, the insertion holes 11 can be easily provided at a position adjacent to the laid rebar R with respect to the water blocking plate 1. Can.

  In addition, as shown in FIG. 4, the water blocking method also ties the binding wire B inserted into the insertion hole 11 of the water blocking plate 1 to each of the plurality of reinforcing bars R and attaches the water blocking plate 1 to the plurality of reinforcing bars R It contains the process. Since the insertion hole 11 of the water blocking plate 1 is provided at a position adjacent to the reinforcing bar R, the bundling wire B can be easily bound to the reinforcing bar R, and the water blocking plate 1 can be easily attached to the reinforcing bar R.

  In addition, as shown in FIG. 1, the water blocking method also includes the step of placing the first concrete layer C1 to the vicinity of the middle region of the water blocking plate 1 and the second concrete adjacent to the first concrete layer C1. And b) placing the layer C2 and joining the second concrete layer C2 to the first concrete layer C1. After the first concrete layer C1 is cast and the first concrete layer C1 is hardened, the second concrete layer C2 is punched, whereby the first concrete layer C1 and the second concrete layer C2 are formed. A junction J is formed between them. Then, the first concrete layer C1 is driven to the vicinity of the middle region of the water blocking plate 1, and then the second concrete layer C2 is driven, whereby the first and second concrete layers C1 and C2 are formed. The water blocking plate 1 is embedded in the lower part, and the water blocking plate 1 is provided at the junction J. The adhesive layer 3 of the water blocking plate 1 provided in the joining portion J adheres to the first and second concrete layers C1 and C2, thereby suppressing the progress of water through the joining portion J.

DESCRIPTION OF SYMBOLS 1 Water-stop plate 11 Insertion hole 2 Reinforcement layer 21 Through-hole 22 1st rod-like member 23 2nd rod-like member 3 Adhesive layer 31 Recession part 32 Convex part B Binding line C1 1st concrete layer C2 2nd concrete layer D1 2nd 1 direction D 2 2nd direction D 3 3rd direction J joint part R rebar W water stop structure

Claims (4)

A water blocking plate provided at a junction extending between two concrete layers and used to suppress the progress of water through the junction,
The water blocking plate is
A reinforcing layer formed in a lattice shape and having a plurality of through holes;
And an adhesive layer covering the reinforcing layer ,
The reinforcing layer includes: a plurality of first rod-shaped members extending in a first direction; and a plurality of second rod-shaped members extending in a second direction intersecting the first direction.
The plurality of first rod-shaped members are disposed on the plurality of second rod-shaped members,
Water stop plate. The adhesive layer is formed with irregularities along the lattice of the reinforcing layer,
The water blocking board according to claim 1. With the first concrete layer,
A second concrete layer to be hammered into the first concrete layer;
Water stopping structure and a waterstop of claim 1 or 2 wherein is arranged so as to intersect the DaTsugi portion extending between said first concrete layer and the second concrete layer. A water blocking method using a water blocking plate provided at a joint portion extending between two concrete layers and used to suppress the progress of water through the joint portion ,
The water blocking plate is
A reinforcing layer formed in a lattice shape and having a plurality of through holes;
And an adhesive layer covering the reinforcing layer,
Laying a plurality of reinforcing bars at intervals, and
Forming an insertion hole in the water blocking plate along the through hole of the reinforcing layer of the water blocking plate adjacent to each of the laid reinforcing bars;
Bonding the binding wire inserted into the insertion hole to each of the plurality of reinforcing bars, and attaching the water blocking plate to the plurality of reinforcing bars;
Driving the first concrete layer to the vicinity of the middle region of the water blocking plate;
And d) placing a second concrete layer adjacent to the first concrete layer, and passing the second concrete layer to the first concrete layer.

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