JP2014114659A - Drainage structure of building, and building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drainage structure of a building that can prevent water from entering into between a cutoff accessory and a joint tape through a corner part of a bent part even when the cutoff accessory is provided with the bent part, and the building.SOLUTION: A cutoff member 50 is arranged between an upper floor-side outer wall panel 30A and a lower floor-side outer wall panel 30B. The cutoff member 50 is formed by joining a cutoff accessory 52 and a cutoff accessory 54 together with a joint tape 56. Fin parts 58, 60 project from both side parts of the joint tape 56 respectively, and while the joint tape 56 is stuck on the cutoff accessories 52, 54, a top 58A of the fin part 58 is stuck on a corner part 62A of a bent part 62 of the cutoff accessory 52 and a top 60A of the fin part 60 is stuck on a corner part 64A of a bent part 64 of the cutoff accessory 54. Namely, the corner parts 62A, 64A are blocked and no water enters into between the cutoff member 50 and joint tape 56.

Description

  The present invention relates to a building drainage structure and a building.

  Patent Document 1 discloses a technique related to a waterproof device for a concrete joint portion. Specifically, this waterproof device is composed of a support material polymerized on a long synthetic resin tape and a nonwoven fabric waterproof tape formed wider than the support material. For this reason, intrusion of water into the concrete joint is prevented by flatly closing the upper surface of the concrete joint with a nonwoven fabric waterproof tape while the support material is pushed into the concrete joint. is there.

Japanese Utility Model Publication No. 4-8610

  However, in this prior art, in order to block the upper surface of the concrete joint part flatly, when a bent part is provided on the upper surface of the concrete joint part, there is a gap between the concrete joint part and the nonwoven fabric waterproof tape. May be provided. In this case, water may enter the concrete joint through the gap.

  In consideration of the above facts, the present invention may prevent water from entering between the water-stopping agent and the joint tape through the corners of the bent portion even if the water-stopping portion is provided with a bent portion. The purpose is to obtain a building drainage structure and building that can.

  The building drainage structure according to the first aspect of the present invention is disposed at the lower end portion of the outer wall panel so as to straddle the water-stopping member provided with a bent portion and the bent portion of the water-stopping member. A long joint tape to be attached; and a blocking portion that projects outward from a side portion of the joint tape and closes a corner portion of the bent portion.

  In the building drainage structure according to the first aspect of the present invention, the water-stopping member disposed at the lower end portion of the outer wall panel includes a bent portion. A long joint tape is attached to the water-stopping material so as to straddle the bent portion, but a closed portion protrudes outward from the side portion of the joint tape. It is designed to block the part.

  When a joint tape is applied to a water-stopping function, the joint tape is applied to the surface of the water-stopping function along the shape of the water-stopping function, but a bent portion is provided on the water-stopping function. The joint tape is stuck so as to straddle the bent portion. For this reason, generally, a gap is provided between the corner of the bent portion and the joint tape. However, in the present invention, the closed portion protruding from the side portion of the joint tape closes the corner portion of the bent portion, so that the gap is closed by the closed portion.

  The building drainage structure according to a second aspect of the present invention is the building drainage structure according to the first aspect, wherein the closed portion has a top portion facing a corner portion of the bent portion and is formed in a triangular shape. Part.

  In the building drainage structure according to the second aspect of the present invention, the closing portion is a fin portion formed in a triangular shape, and the fin portion includes a top portion facing the corner portion of the bent portion. The top is stuck to the corner of the bent part of the water-stopping agent.

  A building drainage structure according to a third aspect of the present invention is the building drainage structure according to the first or second aspect, wherein the blocking portions are provided at least on both sides of the joint tape.

  In the drainage structure for a building according to the present invention as set forth in claim 3, the blocking portion is provided at least on both sides of the joint tape so that when the two water-stopping features are connected by the joint tape, Each of the bent portions can be closed by the closing portion.

  A building drainage structure according to a fourth aspect of the present invention is the building drainage structure according to the third aspect, wherein a plurality of the water stop features are provided, and the water stop features are connected by the joint tape. ing.

  In the drainage structure for a building according to the present invention as set forth in claim 4, a plurality of water-stopping features are provided, and the water-stopping features are connected to each other by a joint tape, so that the bent portion of the water-stopping feature is covered by a blocking portion. Each can be closed.

  The building drainage structure according to the present invention described in claim 5 is the building drainage structure according to claim 4, wherein the water-stopping feature is formed of resin, and the water-stopping features are provided with a gap between them. And connected by the joint tape.

  In the drainage structure for a building according to the present invention as set forth in claim 5, the water stop function is formed of resin. For this reason, the water-stopping product has a larger linear expansion coefficient than that formed of metal and may expand due to heat, but by providing a gap between the water-stopping features, the dimensional change due to thermal expansion can be reduced. Absorbed.

  The building which concerns on this invention of Claim 6 is an upper wall side outer wall panel located in the upper floor side in the outer wall panel of any one of Claims 1-5, and the lower floor side in the said outer wall panel The lower floor side outer wall panel located in the upper floor side outer wall panel and the lower floor side outer wall panel are arranged on a horizontal joint formed between the lower floor side outer wall panel and the lower floor side outer wall panel, A water-stopping member to which the described joint member is attached.

  In the building which concerns on this invention of Claim 6, a water stop is carried out to the horizontal joint formed between the upper wall side outer wall panel located in the upper floor side in the outer wall panel, and the lower floor side outer wall panel located in the lower floor side. An accessory is arranged. A joint tape is affixed to the water-stopping member, and the water-stopping portion is formed by a blocking portion formed on the joint tape and covers the corners of the bent portion. That is, the flooding path to the corner of the bent portion is blocked by the blocking portion.

  As described above, the building drainage structure according to the first aspect of the present invention is configured such that, even if the bent portion is provided in the water stop function, the corner portion of the bent portion is blocked by the blocking portion. It has an excellent effect that water can be prevented from entering between the water-stopping member and the joint tape through the corner.

  The drainage structure for a building according to the second aspect of the present invention has an excellent effect that it is possible to block a flooding path to the corner of the bent portion with a simple configuration.

  The drainage structure of a building according to the present invention described in claim 3 is excellent in that it can block a water infiltration path to the corner of the bent portion in a plurality of water-stopping members, and can secure waterproof performance. It has the effect.

  The drainage structure for a building according to the present invention described in claim 4 has an excellent effect of being able to block the inundation paths at the corners of the bent portions between the water-stopping members.

  The drainage structure for a building according to the present invention according to claim 5 has an excellent effect that weight reduction and cost reduction can be achieved as compared with the case where the water stop function is made of metal.

  The building according to the present invention described in claim 6 has the excellent effect that the maintenance cost of the building can be reduced and the economic burden on the user can be reduced by ensuring the waterproof performance of the building. Have.

It is a disassembled perspective view which shows the water-stopping member and outer wall panel which comprise the drainage structure of the building which concerns on this Embodiment. It is a typical section perspective view showing an important section of a water stop part which constitutes a drainage structure of a building concerning this embodiment. (A) is the front view seen from the front and diagonally upward in FIG. 2, (B) is sectional drawing which shows the state cut | disconnected along the 3 (B) -3 (B) line of (A). . (A) is a front view corresponding to FIG. 3 (A) which shows a comparative example, (B) is sectional drawing which shows the state cut | disconnected along the 4 (B) -4 (B) line of (A). is there.

  The building drainage structure according to the present embodiment will be described below with reference to the drawings.

(Structure of water stop member)
First, the structure of the water stop member which comprises the drainage structure of the building which concerns on this embodiment is demonstrated.
As shown in FIG. 1, for example, an extruded cement board (ECP) is used for the outer wall panel 30 of the building 10, and the outer wall panel 30 is divided for each level. The outer wall panel 30 includes an outer wall portion 32 that is disposed on the outdoor 17 side and forms a design surface, and an inner wall portion 34 that is disposed in parallel to the outer wall portion 32. A plurality of connecting portions 36 that vertically connect the outer wall portion 32 and the inner wall portion 34 are provided between the inner wall portion 34 and the inner wall portion 34 at a predetermined pitch.

  That is, the outer wall panel 30 has a plurality of hollow portions 38 extending along the height direction at a predetermined pitch. The hollow portion 38 includes a hollow portion 38A of an outer wall panel on the upper floor side (hereinafter referred to as “upper floor side outer wall panel”) 30A and an outer wall panel on the lower floor side (hereinafter referred to as “lower floor side outer wall panel”) 30B. The hollow portions 38B are arranged so as to communicate with each other continuously in the building height direction. Further, in the lower floor side outer wall panel 30 </ b> B, a slit 36 </ b> A that connects the adjacent hollow portions 38 </ b> B is formed in parallel with the outer wall portion 32 on the outer wall portion 32 side in the connecting portion 36.

  On the other hand, a horizontal joint 40 is provided between the upper floor side outer wall panel 30A and the lower floor side outer wall panel 30B. In the outer wall panel 30 on the same floor, the vertical wall between the left and right outer wall panels 30 is provided. A joint (not shown) is provided. These joints 42 are each filled with an indefinite shape seal (not shown) in order to ensure the waterproof performance of the building 10. However, when a so-called seal breakage occurs in these joints 42, rainwater may enter the indoor 15 side through the joints 42.

  For this reason, the water stop member 50 is arrange | positioned between the upper floor side outer wall panel 30A and the lower floor side outer wall panel 30B. The water stop member 50 is made of resin, and includes a water stop member 52 and a water stop member 54 whose cross-sectional shape cut along the vertical direction forms a crank shape.

  The water stop member 52 includes a standing wall portion 52A provided so as to face the back surface (inner wall portion 34) of the upper floor side outer wall panel 30A. From the lower end portion of the standing wall portion 52A, a horizontal portion 52B that can face the lower end surface 31 of the upper floor side outer wall panel 30A extends in a substantially horizontal direction. In addition, it is preferable that the horizontal part 52B is an inclined surface that is slightly inclined downward as it is separated from the standing wall part 52A. In addition, an insertion piece 52C that is bent downward and is inserted into the hollow portion 38 and the slit 36A of the lower floor side outer wall panel 30B is provided at the tip of the horizontal portion 52B.

  Further, the water stop member 54 includes a standing wall portion 54 </ b> A provided so as to face the back surface (inner wall portion 34) of the upper floor side outer wall panel 30 </ b> A, similarly to the water stop member 52. From the lower end portion of the standing wall portion 54A, a horizontal portion 54B that can face the lower end surface 31 of the upper floor side outer wall panel 30A extends substantially in the horizontal direction. The horizontal portion 54B is preferably an inclined surface that is slightly inclined downward as it is separated from the standing wall portion 54A. Further, an insertion piece 54C that is bent downward and is inserted into the hollow portion 38 and the slit 36A of the lower floor side outer wall panel 30B is provided at the tip of the horizontal portion 54B.

  Here, the water-stopping member 52 and the water-stopping member 54 are joined by the joint tape 56 with a gap t provided. From both side portions of the joint tape 56, fin portions 58 and 60 as projecting portions having a triangular shape in front view project. The top portion 58A of the fin portion 58 is formed at a position opposite to the corner portion 62A of the bent portion 62 formed by the standing wall portion 52A and the horizontal portion 52B in the water-stopping member 52, and the top portion 60A of the fin portion 60 is stopped. It is formed at a position facing the corner 64 </ b> A of the bent portion 64 formed by the standing wall portion 54 </ b> A and the horizontal portion 54 </ b> B.

  For this reason, in a state where the joint tape 56 is adhered to the water-stopping member 52 and the water-stopping member 54, the top portion 58 </ b> A of the fin portion 58 formed on the joint tape 56 is the bent portion 62 of the water-stopping member 52. The top portion 60 </ b> A of the fin portion 60 is attached to the corner portion 64 </ b> A of the bent portion 64 of the water stop accessory 54.

  Thus, the water stop member 50 in a state where the water stop member 52 and the water stop member 54 are joined by the joint tape 56 is a horizontal joint between the upper floor side outer wall panel 30A and the lower floor side outer wall panel 30B. 40 is disposed at a portion corresponding to 40. And although not shown in figure, the horizontal joint backer is arrange | positioned in the part corresponding to the said horizontal joint 40, and the fixed seal | sticker is filled by the outdoor 17 side of the said horizontal joint backer.

(Operation and effect of water-stopping member)
Next, the action and effect of the water stop member constituting the drainage structure of the building according to the present embodiment will be described.

  As shown in FIG. 1, the upper floor side outer wall panel 30 </ b> A and the lower floor side outer wall panel 30 </ b> B that constitute a part of the outer wall 11 and are arranged vertically are provided with a hollow portion 38 </ b> A and a hollow portion 38 </ b> B along the vertical direction. , And the hollow portion 38A and the hollow portion 38B communicate with each other. And the water stop member 50 is provided in the back of the horizontal joint 40 provided between the upper floor side outer wall panel 30A and the lower floor side outer wall panel 30B.

  For this reason, it is assumed that the water flowing in the hollow portion 38 of the upper floor side outer wall panel 30 </ b> A or the water entering the vertical joint (not shown) and the horizontal joint 40 reaches the water stop member 50 due to the intrusion of rainwater or the like. Then, the water that has reached the water stop member 50 travels horizontally on the horizontal portions 52B and 54B of the water stop members 52 and 54 constituting the water stop member 50, and through the insertion pieces 52C and 54C to the lower floor. It is discharged into the hollow portion 38B of the side outer wall panel 30B and finally discharged out of the building 10. That is, by providing the water stop member 50 between the upper floor side outer wall panel 30A and the lower floor side outer wall panel 30B, a drainage path in the building 10 can be secured.

  Here, in this embodiment, as shown in FIGS. 2 and 3A, fin portions 58 and 60 protrude from both side portions of the joint tape 56, respectively. 2 and 3A schematically show the main part of the water stop member 50, and the insertion pieces 52C and 54C are not shown.

  As shown in FIG. 2 and FIG. 3A, the top of the fin portion 58 formed on the joint tape 56 in a state where the joint tape 56 is adhered to the water-stopping member 52 and the water-stopping member 54. 58 </ b> A is attached to the corner 62 </ b> A of the bent portion 62 in the water stop function 52. Further, the top portion 60 </ b> A of the fin portion 60 is attached to the corner portion 64 </ b> A of the bent portion 64 of the water stop function 54.

  When the joint tape 56 is attached to the water stop member 50, the joint tape 56 is attached to the surface of the water stop member 50 along the shape of the water stop member 50. As shown in FIG. When the bent part 102 is provided in the water-stopping member 100, the joint tape 104 is stuck so as to straddle the bent part 102. Therefore, a gap (so-called pinhole) 106 is provided between the corner 102 </ b> A of the bent portion 102 and the joint tape 104. For this reason, water permeates between the water-stopping member 100 and the joint tape 104 through the gap 106.

  However, in the present embodiment, as shown in FIG. 2, the fin portions 58 and 60 provided on both sides of the joint tape 56 block the corner portions 62A and 64A of the bent portions 62 and 64, respectively. As shown in A) and (B), the gap 61 (see FIG. 3A) is closed. Therefore, even if the water-stopping members 52 and 54 are provided with the bent portions 62 and 64 in the water-stopping member 50, the water-stopping member 50 and the joint tape 56 through the corner portions 62 </ b> A and 64 </ b> A of the bent portions 62 and 64, respectively. Water can be prevented from entering between.

  Further, as shown in FIG. 2, triangular fin portions 58 and 60 are protruded from both sides of the joint tape 56, respectively, and the top portions 58 </ b> A and 60 </ b> A of the fin portions 58 and 60 are formed at the corners of the water stop accessory 52. By sticking to 62A and the corner part 64A of the water-stopping member 54, it is possible to block the water immersion paths to the corners 62A and 64A in the plurality of water-stopping parts 52 and 54, respectively, with a simple configuration.

  Thereby, the waterproof performance in the building 10 can be ensured as shown in FIG. Therefore, the maintenance cost of the building 10 can be reduced, and the user's economic burden can be reduced.

  On the other hand, the water-stopping member 52 and the water-stopping member 54 are joined by a joint tape 56 with a gap t provided. Since the water-stopping members 52 and 54 are formed of resin, the water-stopping members 52 and 54 may have a linear expansion coefficient larger than that of the case where the water-stopping members 52 and 54 are formed of metal and may expand due to heat.

  For this reason, the dimensional change due to thermal expansion is absorbed by providing the gap t between the water stop members 52 and 54. In other words, by taking measures in consideration of the dimensional change of the water-stopping features 52, 54, the water-stopping features 52, 54 can be formed of resin, and the water-stopping features 52, 54 are made of metal. The weight can be reduced and the cost can be reduced as compared with the case of being formed. Needless to say, the water-stopping members 52 and 54 may be formed of a metal or a rubber elastic body, respectively. The joint tape 56 may be made of a rubber elastic body, resin (plastic), non-woven fabric, or aluminum. However, other materials may be used, and an adhesive is provided on one side of the joint tape 56. Yes.

(Other embodiments)
In this embodiment, the water-stopping members 52 and 54 are configured to include the standing wall portions 52A and 54A, the horizontal portions 52B and 54B, and the insertion pieces 52C and 54C, respectively, and between the standing wall portion 52A and the horizontal portion 52B. Although the corner 62A is provided and the corner 64A is provided between the standing wall 54A and the horizontal part 54B, it is not limited to this shape.

  For example, in the water-stopping members 52 and 54, although not illustrated, a shape in which a plurality of standing wall portions and horizontal portions are provided and a plurality of corner portions are provided may be employed. In this case, a plurality of fins are provided on the side portions of the joint tape in accordance with the corners.

  Moreover, since the fin parts 58 and 60 formed in the joint tape 56 should just be able to block the bending parts 62 and 64 formed in the water-stopping parts 52 and 54, respectively, the water-stopping parts 52 and 54 concerned. May not have substantially the same shape.

  As mentioned above, although one embodiment of the present invention was described, the present invention is not limited to such an embodiment, and one embodiment and various modifications may be used in combination as appropriate, and the gist of the present invention will be described. Of course, various embodiments can be implemented without departing from the scope.

10 building 11 outer wall 30 outer wall panel 30A Upper floor side outer wall panel (outer wall panel)
30B Lower floor side outer wall panel (outer wall panel)
40 Horizontal joint 50 Water-stop member (water-stopper)
52 Water-stopping material 54 Water-stopping material 56 Joint tape 58 Fin part (blocking part)
58A Top 60 Fin (Occlusion)
60A Top 62 Bent 62A Corner 64 Bent 64A Corner

Claims (6)

A water-stopping member provided at the lower end of the outer wall panel and provided with a bent portion;
A long joint tape that is stuck so as to straddle the bent portion of the water-stopper;
A closing part that projects outward from the side of the joint tape and closes a corner of the bent part;
Building drainage structure.   The building drainage structure according to claim 1, wherein the closed portion is a fin portion having a top portion facing a corner portion of the bent portion and formed in a triangular shape.   The building drainage structure according to claim 1 or 2, wherein the blocking portion is provided at least on both sides of the joint tape.   The drainage structure for a building according to claim 3, wherein a plurality of the water-stopping features are provided, and the water-stopping features are connected by the joint tape.   The drainage structure of a building according to claim 4, wherein the water-stopper is formed of a resin, and the water-stopper is connected by the joint tape in a state where a gap is provided. In the outer wall panel according to any one of claims 1 to 5, an upper wall side outer wall panel located on the upper floor side,
A lower floor side outer wall panel located on the lower floor side in the outer wall panel;
The joint member according to any one of claims 1 to 5, wherein the joint member is attached to a horizontal joint formed between the upper wall side outer wall panel and the lower floor side outer wall panel. With water
Having a building.

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