JP7091825B2 - Construction method of waterproof structure and waterproof structure - Google Patents

Description

The present invention relates to a waterproof structure of a building and a method of constructing the waterproof structure.

As an outer wall of a building, for example, an outer wall formed by arranging a plurality of wall members made of extruded cement plates vertically and horizontally in the in-plane direction is known, and a frame is provided at a portion where a part of the wall member is cut off. It is known to arrange sashes and provide windows. In the wall member made of extruded cement plate, the outer plate portion and the inner plate portion, which are arranged at intervals in the indoor and outdoor directions, are connected and integrated in the indoor and outdoor directions at a plurality of places. A plurality of hollow portions are formed between the portion and the inner plate portion. Then, in a portion where the wall members are adjacent to each other, a seal member is interposed between the outer plate portions of the adjacent wall members to form a primary water blocking surface, and the seal member is formed between the inner plate portions of the adjacent wall members. Is intervened to form a secondary water stop surface. Further, around the sash, a sealing member is interposed between the end surface of the outer plate portion and the frame body constituting the sash to form a primary water stop surface, and a secondary water stop surface is formed on the indoor side of the primary water stop surface. ing.

In the conventional waterproof structure, the width of the frame in the indoor and outdoor directions is narrow, and the frame does not exist at the position facing the inner plate of the wall member, or there are obstacles such as pieces for fixing the frame. do. Therefore, the sealing material cannot be interposed between the frame body and the inner plate portion. Therefore, there is a problem that the secondary water stop surface at the portion where the wall member is adjacent and the secondary water stop surface around the sash cannot be linearly connected to form. Further, since the secondary water blocking surface around the conventional sash must be provided at a position facing the hollow portion of the wall member, the portion facing the frame body of the hollow portion is filled in order to intervene the sealing member. There is a need. For this reason, there is a problem that the work is complicated and it is difficult to obtain sufficient water stopping performance.
The present invention has been made in view of such circumstances, and an object of the present invention is to provide a water-stopping structure and a method for constructing a water-stopping structure having higher water-stopping performance.

In order to achieve such an object, the waterproof structure of the present invention is used.
A wall member in which an outer plate portion and an inner plate portion facing each other at intervals in the indoor and outdoor directions, and a plurality of connecting portions connecting the outer plate portion and the inner plate portion are integrated.
A frame body provided adjacent to the wall member in the in-plane direction and provided with an outer peripheral portion facing the outer plate portion and the end surface of the inner plate portion.
Have,
A sealing material is interposed between the outer plate portion and the outer peripheral portion to form a primary water blocking surface.
A sealing material is interposed between the inner plate portion and the outer peripheral portion to form a secondary water blocking surface.
The sealing material forming the primary water blocking surface and the sealing material forming the secondary water blocking surface are each provided with a backup member inside in the thickness direction of the wall member.
The two backup members arranged in the thickness direction are water-stopping structures characterized in that they are separated from each other .

According to such a water blocking structure, a primary water blocking surface is formed between the end surface of the outer plate portion of the wall member and the outer peripheral portion of the frame body, and between the end surface of the inner plate portion and the outer peripheral portion of the frame body. Since the secondary water stop surface is formed, it is possible to more reliably stop water between the wall member and the frame body. That is, around the frame body, a primary water stop surface is formed along the end surface of the outer plate portion of the wall member, and a secondary water stop surface is formed along the end surface of the inner plate portion. Therefore, the primary water stop surface along the end surface of the outer plate portion of the wall member arranged around the frame body and the primary water stop surface around the frame body are formed at the same position in the thickness direction of the wall member. Also, the secondary water stop surface along the end surface of the inner plate portion of the wall member arranged around the frame body and the secondary water stop surface around the frame body are the same in the thickness direction of the wall member. It is possible to form at the position of. Therefore, since the primary water stop surface and the secondary water stop surface can be continuously provided between the adjacent wall member and the frame as the whole wall, it is possible to provide a water stop structure having higher water stop performance. Is possible.

Further , according to such a water stop structure, even if the primary water stop surface on the outdoor side is damaged and water enters between the primary water stop surface and the secondary water stop surface, it is provided inside the primary water stop surface and the secondary water stop surface. It is possible to smoothly flow water between two backup members arranged in the thickness direction of the wall member.

In such a water-stopping structure, the frame has a rectangular shape, and the wall members are provided on four sides surrounding the frame, and the width of the frame in the indoor and outdoor directions is the thickness of the wall member. It is characterized by being wider than.

According to such a waterproof structure, the width of the frame in the indoor and outdoor directions is wider than the width of the wall members provided on the four sides surrounding the rectangular frame in the indoor and outdoor directions, so that the outside of the wall member Both the plate portion and the inner plate portion can be arranged so as to face the outer peripheral portion of the frame body. Therefore, since the sealing material can be reliably provided between the outer peripheral portion of the frame body and the outer plate portion and the inner plate portion, it is possible to provide higher water stopping property.

Further, a wall member in which an outer plate portion and an inner plate portion facing each other in the indoor and outdoor directions at intervals and a plurality of connecting portions connecting the outer plate portion and the inner plate portion are integrated.
A frame body provided adjacent to the wall member in the in-plane direction and provided with an outer peripheral portion facing the outer plate portion and the end surface of the inner plate portion.
Have,
A sealing material is interposed between the outer plate portion and the outer peripheral portion to form a primary water blocking surface.
A sealing material is interposed between the inner plate portion and the outer peripheral portion to form a secondary water blocking surface.
The frame has a rectangular shape, and the wall members are provided on all four sides surrounding the frame.
The width of the frame in the indoor and outdoor directions is wider than the thickness of the wall member.
Among the wall members provided on the four sides of the frame, the mounting member on which the wall member located on the frame is mounted and the mounting member.
A draining member that is interposed between the above-mentioned mounting member and the mounting wall member mounted on the mounting member and guides water that has entered the indoor side of the previously described mounting member to the outdoor side.
Have,
The draining member has a draining facing portion facing the adjacent wall member on the indoor side of the adjacent wall member horizontally adjacent to the previously described wall member mounted at a distance from the adjacent wall member.
It is a water blocking structure characterized in that a sealing material is interposed between the adjacent wall member and the draining facing portion.

According to such a water blocking structure, the draining member provided between the mounting wall member and the mounting member faces the adjacent wall member horizontally adjacent to the mounting wall member on the indoor side. Since it has a portion, it is possible to more reliably interpose the sealing material between the draining facing portion and the adjacent wall member.

In addition, it is the construction method of the above-mentioned waterproof structure.
A draining member mounting step in which the draining member is placed on the above-mentioned mounting member by facing the draining facing portion and the adjacent wall member at a distance.
A sealing material filling step for filling a sealing material between the draining facing portion and the adjacent wall member,
The mounting wall member mounting step for mounting the above-mentioned mounting wall member on the draining member, and
It is a construction method of a waterproof structure characterized by having.

According to the construction method of such a water blocking structure, since the draining member has the draining facing portion, the draining member is simply placed on the mounting member, and the draining facing portion is separated from the adjacent wall member. It is possible to face each other. Further, in the draining member mounted on the mounting member, the draining facing portion and the adjacent wall member face each other at a distance, so that the sealing material can be more reliably provided between the draining facing portion and the adjacent wall member. It is possible to fill. Therefore, it is possible to easily and surely stop the water between the draining facing portion and the adjacent wall member.

According to the present invention, it is possible to provide a water-stopping structure and a method for constructing a water-stopping structure having higher water-stopping performance.

It is an external view which shows an example of the outer wall to which the waterproof structure which concerns on this embodiment is applied. FIG. 3 is a cross-sectional view taken along the line AA in FIG. It is sectional drawing of BB in FIG. It is a perspective view which shows the draining member. FIG. 3 is a cross-sectional view taken along the line CC in FIG. It is a figure explaining the part where the extruded cement board arranged on the frame body is placed. It is a figure which shows providing the construction method of the water-stopping structure which stops water around the draining member. FIG. 7A is a perspective view of FIG. 7A as viewed from below. FIG. 7 (b) is a perspective view seen from below.

Hereinafter, the waterproof structure of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the outer wall provided with the waterproof structure of the present embodiment is, for example, an outer wall in which extruded cement plates 1 as a plurality of wall members are arranged vertically and horizontally in the in-plane direction. A sash 2 is provided in a part thereof.

In the following description, when the building is viewed from the outside, the vertical direction is shown as the vertical direction, the left-right direction is shown as the left-right direction, and the depth direction, which is the wall thickness direction, is shown as the indoor / outdoor direction. Whether it is each part of the building or each member that composes the building as a single unit, the direction is in the vertical direction, the horizontal direction, and the indoor / outdoor direction when the building is built. Is specified and explained.

As shown in FIG. 2, the extruded cement plate 1 constituting the outer wall includes an outer plate portion 10 and an inner plate portion 11 facing each other at intervals in the indoor and outdoor directions, and an outer plate portion 10 and an inner plate portion 11. A plurality of connecting portions 12 for connecting the above are integrally formed. The connecting portion 12 is provided along the extrusion direction, and a hollow portion 1a is formed between the connecting portions 12 adjacent to each other. In the extruded cement plate 1 of the present embodiment, the extrusion direction is directed in the vertical direction, and the hollow portion 1a penetrates in the vertical direction.

One of the left and right ends of the extruded cement plate 1 is provided with a side surface protrusion 1b that projects outward in the in-plane direction, and the other has a side surface recess 1c that is recessed inward in the in-plane direction. Nothing. More specifically, in the left end portion of the extruded cement plate 1, the end portion of the outer plate portion 10 and the end portion of the inner plate portion 11 are connected by the connecting portion 12, and the thickness direction of the connecting portion 12 The side surface protruding portion 1b is provided so as to be positioned at the center of the above. Therefore, the left end surface 10a of the outer plate portion 10 forms a part of the side surface on the outdoor side of the side protrusion 1b of the extruded cement plate 1, and the left end surface 11a of the inner plate portion 11 is the extruded cement. It forms a part of the side surface on the indoor side of the side surface protruding portion 1b of the plate 1.

The right end of the extruded cement plate 1 is formed so that the outer plate portion 10 and the inner plate portion 11 project to the right side of the connecting portion 12 located on the far right side, and the outer plate portion 10 overhangs. A side recess 1c is formed by the inner plate portion 11 and the connecting portion 12 located on the far right.

On the wall of the building of the present embodiment, extruded cement plates 1 having substantially the same height as the floor height are arranged side by side in the vertical direction and the horizontal direction. The side surface protrusion 1b of the extruded cement plate 1 located on the right side of the two extruded cement plates 1 adjacent to the left and right is arranged so as to be inserted into the side surface recess 1c of the extruded cement plate 1 located on the left side. Has been done.

As shown in FIG. 2, between the vertically and horizontally adjacent extruded cement plates 1, a sealing made of an amorphous material is provided between the end faces 10a of the outer plate portions 10 facing each other of the adjacent extruded cement plates 1. A joint forming the primary water blocking surface S1 is formed with the material 8a interposed therebetween. A gasket 9 made of a soft resin molded into a predetermined shape is interposed between the end faces 11a of the inner plate portions 11 facing each other of the adjacent extruded cement plates 1 to form a secondary water blocking surface S2.

The sealing material 8a forming the primary water blocking surface S1 is provided inside the extruded cement plate 1 and is filled on the outdoor side of the backup member 20 made of a synthetic resin sponge or the like. The backup member 20 is held by the side surface recesses 1c at the left and right ends of the extruded cement plate 1 and the side surface protrusions 1b that enter the side surface recesses 1c.

As shown in FIG. 1, the wall of the building of the present embodiment is provided with a sash 2 for a FIX window by cutting off an intermediate portion in the vertical direction of two extruded cement plates 1 adjacent to each other in the left-right direction. There is. The sash 2 for a FIX window has, for example, a glass 2a and a frame body 2b for accommodating a peripheral end portion of the glass 2a. The frame body 2b is formed by joining extruded members made of synthetic resin. If the frame made of synthetic resin is formed in the same shape as the frame made of aluminum, the rigidity will be low. Therefore, in the case of the frame made of synthetic resin, for example, a hollow portion along the extrusion direction is formed to increase the rigidity. Has been done. Therefore, the frame made of synthetic resin is formed to have a wider width in the indoor and outdoor directions than the frame made of aluminum. Here, the sash provided on the wall is not limited to the sash for the FIX window.

The frame body 2b is framed in a rectangular shape, and the outer peripheral portion 2c forms a flat outer peripheral surface 2d. As shown in FIGS. 3 and 5, when the frame body 2b is arranged surrounded by the extruded cement plate 1, the edge portion on the outdoor side of the outer peripheral portion 2c is located on the outdoor side of the outer plate portion 10. It protrudes, and the edge portion on the indoor side of the outer peripheral portion 2c protrudes toward the indoor side from the inner plate portion 11. That is, the width W of the frame body 2b of the sash 2 in the indoor and outdoor directions is formed wider than the thickness t of the extruded cement plate 1. Therefore, the outer peripheral surface 2d of the frame body 2b faces the outer plate portions 10 and the end surfaces 10a and 11a of the adjacent extruded cement plate 1 on the entire circumference of the frame body 2b at a distance from each other. ing. Further, in the extruded cement plate 1 adjacent to the frame body 2b in the left-right direction, the side surface protruding portion 1b protruding toward the frame body 2b is cut off at a portion facing the outer peripheral surface 2d of the frame body 2b. There is. Here, even if the outer peripheral surface 2d of the frame body 2b is not flat, it may have a portion facing the end surfaces 10a and 11a of the outer plate portion 10 and the inner plate portion 11.

A support angle member 4 connected to the building frame is provided in the vicinity of the joint between the extruded cement plate 1 located on the frame 2b and the frame 2b, and is provided on the frame 2b. As shown in FIG. 3, the extruded cement plate 1 located is configured so that the fixing member 5 fixed to the lower end side does not fall down by engaging with the support angle member 4.

The support angle member 4 has two plate portions 4a and 4b having an L-shaped cross section, that is, a first plate portion 4a having a horizontal surface and fixed to a beam, and an outdoor side of the first plate portion 4a. It has a second plate portion 4b extending from the edge to form a vertical surface.

The fixing member 5 fixed to the lower end side of the extruded cement plate 1 is a plate-shaped member bent so as to have a step. The fixing member 5 is fixed to the lower end side of the indoor side surface of the extruded cement plate 1 and is held so as not to fall by engaging with the second plate portion 4b of the support angle member 4.

Further, the extruded cement plate 1 located on the frame body 2b is mounted on the mounting angle member 6 as a mounting member whose lower end is fixed to the support angle member 4 via the draining member 7. There is. Like the support angle member 4, the mounting angle member 6 also has two plate portions 6a and 6b having an L-shaped cross section, and is in contact with the outdoor side of the second plate portion 4b of the support angle member 4. It has a vertical plate portion 6a that is contacted and joined, and a horizontal plate portion 6b that extends horizontally from the lower end of the vertical plate portion 6a toward the outdoor side.

The extruded cement plate 1 located on the frame 2b is placed on the horizontal plate portion 6b via the draining member 7. Here, the extruded cement plate 1 located on the frame body 2b and mounted on the mounting angle member 6 via the draining member 7 corresponds to the mounting wall member, and in the following description, it corresponds to the mounting wall member. It is also referred to as a mounted extrusion-molded cement plate 100. In the present embodiment, the mounted extruded cement plate 100, the extruded cement plate 1 adjacent to the left and right, and the extruded cement plate 1 adjacent to the left and right of the frame 2b are the same extruded cement plate 1 and are adjacent to each other. Corresponds to a wall member.

In the following description, the mounted extruded cement plate 100 and the extruded cement plate 1 adjacent to the left and right sides of the frame 2b are also referred to as adjacent extruded cement plates 101. In the present embodiment, as shown in FIG. 1, an example in which the number of the mounted extruded cement plates 100 located on the frame 2b is two will be described, but the number of the mounted extruded cement plates is 1. It may be three or more.

As shown in FIGS. 3 and 4, the drainer member 7 is connected to the vertical facing portion 7a and the vertical facing portion 7a, which is connected to the vertical facing portion 6a and is in contact with the outdoor side surface of the vertical plate portion 6a, and is connected to the upper surface of the horizontal plate portion 6b. It has a laterally facing portion 7b that is in contact with the laterally facing portion 7b, and a hanging plate portion 7c that is provided so as to hang downward from the outdoor side edge of the laterally facing portion 7b. The vertically facing portion 7a has a draining facing portion 7d extending in the left-right direction longer than the horizontally facing portion 7b. Further, the hanging plate portion 7c is located on the outdoor side of the horizontal plate portion 6b in a state where the lower end of the upper extruded cement plate 1 is placed on the lateral facing portion 7b placed on the horizontal plate portion 6b. Is located in. In the present embodiment, an example in which the draining member 7 is composed of one member is described, but the present invention is not limited to this. For example, the draining member has two or more members, and a connecting portion thereof. May be configured to be water-stopped by butyl tape or the like.

As shown in FIG. 3, a support angle member 4 connected to the building frame is also provided in the vicinity of the joint portion between the extruded cement plate 1 located below the frame body 2b and the frame body 2b. .. The support angle member 4 provided near the lower end of the frame 2b is provided with the vertical direction reversed from that of the support angle member 4 provided near the upper end of the frame 2b. Therefore, in the two support angle members 4 provided near the upper end and the lower end of the frame body 2b, the first plate portions 4a face each other with a space above and below each other.

In the support angle member 4 located near the upper end of the frame body 2b, the second plate portion 4b extends upward from the outdoor side edge of the first plate portion 4a, and the support angle member 4 is located near the lower end of the frame body 2b. In the member 4, the second plate portion 4b extends downward from the outdoor side edge of the first plate portion 4a. Between the two facing first plate portions 4a of the two support angle members 4 provided near the upper and lower ends of the frame body 2b, the support angle member 4 is provided at the left-right end portion in the longitudinal direction in the vertical direction. It is installed alongside. As shown in FIG. 5, in the support angle members 4 provided along the vertical direction, the first plate portions 4a face each other with a space between the left and right sides.

The support angle member 4 located near the left end of the frame 2b has a second plate portion 4b extending to the left from the outdoor side edge of the first plate portion 4a, and the support angle member 4 located near the right end has a support angle member 4. The second plate portion 4b extends to the right side from the outdoor side edge of the first plate portion 4a. The four support angle members 4 are joined in a rectangular shape, and the frame body 2b is arranged inside the first plate portion 4a of the four support angle members 4 joined in a rectangular shape.

As shown in FIGS. 3 and 5, in the frame body 2b arranged inside the four support angle members 4, the outer peripheral surface 2d of the frame body 2b and the first plate portion 4a face each other, and the frame body 2b The frame body 2b is fixed by the frame body connecting member 21 that connects between the outer peripheral surface 2d and the first plate portion 4a.

Sealing materials 8a and 8b made of an amorphous material are interposed between the outer peripheral portion 2c of the frame body 2b and the extruded cement plates 1 facing each other on the four sides of the frame body 2b. More specifically, the extruded cement plate 1 is located between the outer peripheral surface 2d of the four circumferences of the frame body 2b and the end surface 10a of the outer plate portion 10 of the extruded cement plate 1 located on the four sides of the frame body 2b. A backup member 20 is provided on the back side in the thickness direction of the back-up member 20, and the sealing material 8a is filled on the outdoor side of the backup member 20 to form a primary water stop surface S1. The primary water blocking surface S1 is a portion where the sealing material 8a filled in the outer wall where the extruded cement plates 1 are adjacent to each other and the end surface 10a of the frame body 2b and the outer plate portion 10 of the extruded cement plate 1 are adjacent to each other. The sealing material 8a filled in is continuously provided without a break.

Extrusion molding is performed between the lower outer peripheral surface 2d and the left and right outer peripheral surfaces 2d of the frame body 2b and the end surface 11a of the inner plate portion 11 of the extruded cement plate 1 located under the frame body 2b and on the left and right sides. A backup member 20 is provided on the inner side of the cement plate 1 in the thickness direction, and the sealing material 8b is filled on the indoor side of the backup member 20 to form a secondary water blocking surface S2. A sealing material 8b interposed between the left and right outer peripheral surfaces 2d of the frame body 2b and the end surface 11a of the inner plate portion 11 of the adjacent extruded cement plate 101 located on the left and right sides of the frame body 2b, and the sealing material 8b. Positioned vertically, the gasket 9 interposed between the inner plate portions 11 of the placed extruded cement plate 100 and the adjacent extruded cement plate 101 is provided continuously without a break. Further, the sealing material 8b interposed between the left and right outer peripheral surfaces 2d of the frame body 2b and the end surface 11a of the inner plate portion 11 of the adjacent extruded cement plate 101 located on the left and right sides of the frame body 2b is the frame body 2b. It is also provided seamlessly and continuously with the sealing material 8b interposed between the end surface 11a of the inner plate portion 11 of the extruded cement plate 1 located below.

On the left and right outer peripheral surfaces 2d of the frame 2b, a sealing material 8a forming a primary water blocking surface S1 formed between the left and right adjacent extruded cement plates 101 and the end surface 10a of the outer plate portion 10, and the adjacent extruded cement. A sealing material 8b forming a secondary water blocking surface S2 formed between the end surface 11a of the inner plate portion 11 of the plate 101 is provided along the vertical direction. The backup member 20 provided on the indoor side of the sealing material 8a forming the primary water blocking surface S1 on the left and right outer peripheral surfaces 2d of the frame body 2b, and the backup provided on the outdoor side of the sealing material 8b forming the secondary water blocking surface S2. The members 20 are spaced apart from each other in the indoor and outdoor directions, and a gap R is formed between the backup members 20.

The thickness of the extruded cement plate 1 is also between the upper outer peripheral surface 2d of the frame 2b and the lower surface of the horizontal plate portion 6b in the mounting angle member 6 that is inserted between the mounted extruded cement plate 100. A backup member 20 is provided on the back side in the direction, and the sealing material 8b is filled on the indoor side of the backup member 20 to form a secondary water stop surface S2. The sealing material 8b interposed between the lower surface of the horizontal plate portion 6b and the upper surface of the frame body 2b is provided at the same position as the end surface 11a of the inner plate portion 11 of the mounted extruded cement plate 100 in the indoor / outdoor direction. Has been done.

Further, in the mounting extrusion-molded cement plate 100 mounted on the mounting angle member 6 located on the frame body 2b via the draining member 7, the vertical facing portion 7a of the draining member 7 and the indoor side surface thereof are aligned with each other. Face to face. Further, as shown in FIG. 6, the draining facing portions 7d provided on both sides in the horizontal direction in the vertically facing portions 7a of the draining member 7 are adjacent extrusion-molded cement plates adjacent to the left and right of the placed extrusion-molded cement plate 100. It faces the indoor side surface of 101. The sealing material 8c is also filled between the draining facing portion 7d and the indoor side surface of the adjacent extruded cement plate 101. Further, the sealing material 8d is also filled between the side end surface 6c of the mounting angle member 6 on which the draining member 7 is placed and the end surface 11a of the inner plate portion 11. Then, the sealing material 8c between the draining facing portion 7d and the indoor side surface of the adjacent extruded cement plate 101, and the sealing material 8d between the side end surface 6c of the mounting angle member 6 and the end surface 11a of the inner plate portion 11. , And the gasket 9 interposed between the adjacent extruded cement plates 101 located on the left and right on the frame body 2b are continuously provided without a break.

Further, as shown in FIGS. 2 and 7 (d), left and right are left and right between the vertically facing portion 7a of the draining member 7 and the inner plate portion 11 of the mounted extrusion-molded cement plate 100 on the draining member 7. A gasket 90 is interposed so as to be continuous with the sealing material 8c interposed between the draining facing portion 7d and the end surface 11a of the inner plate portion 11.

As shown in FIG. 3, on the outer peripheral surface 2d on the frame body 2b, the sealing material 8a forming the primary water blocking surface S1 formed between the outer peripheral surface 2d and the end surface 10a of the outer plate portion 10 of the placed extrusion-molded cement plate 100. And the sealing material 8b forming the secondary water blocking surface S2 formed between the lower surface of the horizontal plate portion 6b in the mounting angle member 6 are provided along the left-right direction. A backup member 20 provided on the indoor side of the sealing material 8a forming the primary water blocking surface S1 on the outer peripheral surface 2d on the frame body 2b, and a backup provided on the outdoor side of the sealing material 8b forming the secondary water blocking surface S2. The members 20 are spaced apart from each other in the indoor and outdoor directions, and a gap R is formed between the backup members 20. The gap R provided on the outer peripheral surface 2d on the frame body 2b and the gap R provided on the left and right outer peripheral surfaces 2d side of the frame body 2b communicate with each other. Further, the hanging plate portion 7c of the draining member 7 is located above the gap R provided on the outer peripheral surface 2d on the frame body 2b.

The water dripping from the hanging plate portion 7c of the draining member 7 travels along the upper outer peripheral surface 2d in the gap R formed between the backup members 20 on the upper outer peripheral surface of the frame body 2b, and is left and right of the frame body 2b. The water that reaches the gap R formed between the backup members 20 on the outer peripheral surface 2d of the above surface and enters between the primary water stop surface S1 and the secondary water stop surface S2 flows down to the lower layer and finally finally. It is discharged outdoors.

In the vertically facing portion 7a of the draining member 7 arranged at the upper part of the frame body 2b, the indoor side surface of the inner plate portion 11 of the adjacent extruded cement plate 101 adjacent to the left and right of the mounted extruded cement plate 100 and the shop. A method of constructing a waterproof structure in which the sealing material 8c is filled between the draining facing portion 7d and the draining facing portion 7d facing each other at intervals in the inner and outer directions will be described.

In a state where adjacent extruded cement plates 101 adjacent to the left and right of the placed extruded cement plate 100 on the draining member 7 arranged on the upper part of the frame 2b are arranged, between the adjacent extruded cement plates 101. , The support angle member 4 and the mounting angle member 6 fixed to the support angle member 4 are located.

First, as shown in FIG. 7A, the draining member 7 is mounted on the mounting angle member 6 (draining member mounting step). At this time, the horizontal facing portion 7b of the draining member 7 is in contact with the horizontal plate portion 6b of the mounting angle member 6, and the vertical facing portion 7a of the draining member 7 is in contact with the vertical plate portion 6a of the mounting angle member 6. As shown in FIG. 8, the drainer facing portion 7d faces the inner plate portion 11 of the adjacent extruded cement plate 101 arranged on the left and right at a distance.

Next, as shown in FIGS. 7 (b) and 9, a sealing material 8c is placed between the draining facing portion 7d of the vertically facing portion 7a and the inner plate portion 11 of the adjacent extruded cement plate 101 facing each other. Fill (sealing material filling step).

The sealing material 8c is filled, for example, from the upper end of the draining facing portion 7d, and is connected and filled from the lower end side of the draining facing portion 7d as shown in FIG. Further, the sealing material 8d is also filled between the side end surface 6c of the mounting angle member 6 and the end surface 11a of the inner plate portion 11 and connected to the gasket 9 attached to the inner plate portion 11.

Next, as shown in FIG. 7 (c), the gasket 90 is attached to the outdoor side of the vertically facing portion 7a of the draining member 7 along the upper end side of the vertically facing portion 7a.
Next, the gasket 9 is attached to the end surface 11a located below the mounting angle member 6 in the inner plate portion 11. Since the gasket 9 attached to the end surface 11a of the inner plate portion 11 is installed on the outdoor side of the gasket 90 attached to the upper end side of the vertically facing portion 7a, the gasket 9 and the gasket 90 finally intersect with each other. Is in close contact.
Finally, as shown in FIG. 7 (d), the embossed extrusion-molded cement plate 100 is placed on the drainer member 7 (mounting wall member mounting step).

According to the waterproof structure of the present embodiment, the sealing material 8a filled between the end surface 10a of the outer plate portion 10 of the extruded cement plate 1 and the outer peripheral surface 2d of the frame body 2b forms the primary water blocking surface S1. Since the sealing material 8b filled between the end surface 11a of the inner plate portion 11 and the outer peripheral surface 2d of the frame body 2b forms the secondary water blocking surface S2, water can be stopped more reliably. That is, a primary water stop surface S1 is formed around the frame body 2b along the end surface 10a of the outer plate portion 10 of the extruded cement plate 1, and the secondary water stop surface S2 is formed along the end surface 11a of the inner plate portion 11. It is formed. Therefore, the extruded cement plate has a primary water stop surface S1 along the end surface 10a of the outer plate portion 10 of the extruded cement plate 1 arranged around the frame body 2b and a primary water stop surface S1 around the frame body 2b. It is possible to form the same position in the thickness direction of 1, and the secondary water stop surface S2 along the end surface 11a of the inner plate portion 11 of the extruded cement plate 1 arranged around the frame body 2b. It is possible to form the secondary water blocking surface S2 around the frame 2b at the same position in the thickness direction of the extruded cement plate 1. Therefore, the primary water stop surface S1 and the secondary water stop surface S2 can be continuously provided on the entire wall formed by the extruded cement plate 1 and the sash 2, so that the water stop surface has higher water stoppage performance. It is possible to provide a water structure.

Further, in the thickness direction of the extruded cement plate 1, the backup member 20 provided on the back side of the sealing material 8a forming the primary water blocking surface S1 and the sealing material 8b forming the secondary water stopping surface S2 are provided. Since the backup members 20 are separated from each other and a gap R is formed between the backup members 20, even if the primary water stop surface S1 is damaged, water is formed between the backup members 20 and the secondary water stop surface S2. Is able to smoothly flow water from between the backup members 20 provided inside the primary water stop surface S1 and the secondary water stop surface S2 even if the water enters.

Further, since the width W of the frame body 2b in the indoor / outdoor direction is wider than the thickness t of the extruded cement plate 1 provided on the four sides surrounding the rectangular frame body 2b, the outer plate portion of the extruded cement plate 1 Both the end surface 10a of the 10 and the end surface 11a of the inner plate portion 11 can be arranged so as to face the outer peripheral surface 2d of the frame body 2b. Therefore, since the sealing materials 8a and 8b can be reliably provided between the outer peripheral surface 2d of the frame body 2b and the outer plate portion 10 and the inner plate portion 11, it is possible to provide higher water stopping property.

Further, the outer peripheral surface 2d on the upper side of the frame body 2b is the lower surface of the horizontal plate portion 6b of the mounting angle member 6 interposed between the mounting extrusion molded cement plate 100 on the frame body 2b and the frame body 2b. By filling the outer peripheral surface 2d of the above surface with the sealing material 8b, it is possible to provide high water stopping property on the upper side of the frame body 2b. Further, since the lower surface of the outer peripheral surface 2d of the frame body 2b and the left and right side surfaces directly face the end surface 10a of the outer plate portion 10 and the end surface 11a of the inner plate portion 11, the entire circumference of the frame body 2b It is possible to easily stop the water.

Further, the drainage member 7 provided between the mounting extruded cement plate 100 located on the frame 2b and the mounting angle member 6 on which the mounted extruded cement plate 100 is mounted is mounted. Since the extruded cement plate 100 and the adjacent extruded cement plate 101 adjacent in the horizontal direction and the drainage facing portion 7d facing each other on the indoor side are provided, between the drainage facing portion 7d and the adjacent extruded cement plate 101. It is possible to reliably fill the sealing material 8c. Further, a sealing material 8d is also filled between the side end surface 6c of the mounting angle member 6 on which the draining member 7 is mounted and the end surface 11a of the inner plate portion 11, and the draining facing portion 7d and the adjacent extruded cement plate are also filled. On the sealing material 8c between the indoor side surface of 101, the sealing material 8d between the side end surface 6c of the mounting angle member 6 and the end surface 11a of the inner plate portion 11, and on the frame body 2b. It is possible to form the secondary water stop surface S2 by continuously connecting the gaskets 9 interposed between the adjacent extruded cement plates 101 located on the left and right sides without a break. Therefore, it is possible to provide high water stopping even at the joint portion where the frame body 2b and the mounted extruded cement plate 100 are connected in the vertical direction.

Further, according to the construction method of the water blocking structure of the present embodiment, since the draining member 7 has the draining facing portion 7d, the draining member 7 can be simply placed on the mounting angle member 6 to have the draining facing portion. It is possible to face the 7d with the adjacent extruded cement plate 101 at a distance. Further, in the draining member 7 mounted on the mounting angle member 6, since the draining facing portion 7d and the adjacent extruded cement plate 101 face each other at a distance, the draining facing portion 7d and the adjacent extruded cement are opposed to each other. It is possible to more reliably fill the sealing material 8c between the plate 101 and the plate 101. Further, since the draining member 7 is mounted on the mounting angle member 6, the sealing material 8d is also filled between the side end surface 6c of the mounting angle member 6 and the end surface 11a of the inner plate portion 11 so as to face the draining member. A gasket 9 interposed between the sealing material 8c and the adjacent extruded cement plates 101 located on the left and right on the frame 2b between the portion 7d and the indoor side surface of the adjacent extruded cement plate 101. It is possible to easily form a secondary water stop surface S2 that is seamlessly continuous with and. Therefore, it is possible to easily and more reliably stop water between the draining facing portion 7d and the adjacent extruded cement plate 101.

As described above, the above-described embodiment is for facilitating the understanding of the present invention, and is not for limiting the interpretation of the present invention. It goes without saying that the present invention can be modified and improved without departing from the spirit thereof, and the present invention includes an equivalent thereof.

1 Extruded cement board (wall member), 2b frame, 2c outer peripheral part, 2d outer peripheral surface,
3 beams, 4 support angle members, 6 mounting angle members, 7 drainer members,
7d drainer facing part, 8a sealing material forming the primary water stop surface,
8b Sealant that forms a secondary water blocking surface between the frame and the inner plate,
8c Sealant that forms a secondary water stop surface between the extruded cement plate and the draining facing part,
8d A sealing material that forms a secondary water blocking surface between the side end surface of the mounting angle member 6 and the end surface of the inner plate portion.
10 Outer plate part, 10a Outer plate part end face, 11 Inner plate part, 11a Inner plate part end face,
12 connecting part, 20 backup member,
100 on-board extruded cement board, 101 adjacent extruded cement board,
R void, S1 primary water stop surface, S2 secondary water stop surface,

Claims (4)

A wall member in which an outer plate portion and an inner plate portion facing each other at intervals in the indoor and outdoor directions, and a plurality of connecting portions connecting the outer plate portion and the inner plate portion are integrated.
A frame body provided adjacent to the wall member in the in-plane direction and provided with an outer peripheral portion facing the outer plate portion and the end surface of the inner plate portion.
Have,
A sealing material is interposed between the outer plate portion and the outer peripheral portion to form a primary water blocking surface.
A sealing material is interposed between the inner plate portion and the outer peripheral portion to form a secondary water blocking surface.
The sealing material forming the primary water blocking surface and the sealing material forming the secondary water blocking surface are each provided with a backup member inside in the thickness direction of the wall member.
A waterproof structure characterized in that the two backup members arranged in the thickness direction are separated from each other . The waterproof structure according to claim 1 .
The frame has a rectangular shape, and the wall members are provided on all four sides surrounding the frame.
A waterproof structure characterized in that the width of the frame in the indoor and outdoor directions is wider than the thickness of the wall member. A wall member in which an outer plate portion and an inner plate portion facing each other at intervals in the indoor and outdoor directions, and a plurality of connecting portions connecting the outer plate portion and the inner plate portion are integrated.
A frame body provided adjacent to the wall member in the in-plane direction and provided with an outer peripheral portion facing the outer plate portion and the end surface of the inner plate portion.
Have,
A sealing material is interposed between the outer plate portion and the outer peripheral portion to form a primary water blocking surface.
A sealing material is interposed between the inner plate portion and the outer peripheral portion to form a secondary water blocking surface.
The frame has a rectangular shape, and the wall members are provided on all four sides surrounding the frame.
The width of the frame in the indoor and outdoor directions is wider than the thickness of the wall member.
Among the wall members provided on the four sides of the frame, the mounting member on which the wall member located on the frame is mounted and the mounting member.
A draining member that is interposed between the above-mentioned mounting member and the mounting wall member mounted on the mounting member and guides water that has entered the indoor side of the previously described mounting member to the outdoor side.
Have,
The draining member has a draining facing portion that faces the adjacent wall member on the indoor side of the adjacent wall member that is horizontally adjacent to the previously described mounting wall member at a distance from the adjacent wall member.
A waterproof structure characterized in that a sealing material is interposed between the adjacent wall member and the draining facing portion. The method for constructing a waterproof structure according to claim 3 .
A draining member mounting step in which the draining member is placed on the above-mentioned mounting member by facing the draining facing portion and the adjacent wall member at a distance.
A sealing material filling step for filling a sealing material between the draining facing portion and the adjacent wall member,
The mounting wall member mounting step for mounting the above-mentioned mounting wall member on the draining member, and
A method of constructing a waterproof structure, which is characterized by having.

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