JP3234278B2 - Protection structure at the rising part of the waterproof layer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for protecting a waterproof layer of a building, and more particularly to a structure for protecting a rising portion of a waterproof layer for protecting a rising portion.

[0002]

2. Description of the Related Art In general, a waterproof layer is formed on the rooftop of a building by asphalt or the like, and a pressing concrete is cast on the upper surface of the waterproof layer in order to protect the waterproof layer from direct sunlight and wind and rain. is there. The end of the waterproof layer rises along a body such as a parapet, and the rising portion is protected by a curtain plate such as a flexible board. Further, the upper end of the rising portion is fixed to a jaw-shaped recess provided in a body such as a parapet by a holding metal fitting and is sealed by a sealing material.

[0003]

However, in the above-mentioned conventional structure, effective protection cannot be expected unless the jaw-shaped concave portion is largely recessed. In other words, if a large overhang is formed on a parapet or the like and the end of the waterproof layer is not positioned on the lower surface of the overhang, rainwater may infiltrate between the end of the waterproof layer and the frame by spraying rainwater or the like. It is easy to cause leakage and corrosion. In addition, in order to form a large overhang, a skilled technique is required for producing a temporary frame and placing concrete. If the overhanging portion is angular, the corner is easily damaged and chamfering is extremely complicated. Further, when the sealing material is deteriorated due to aging, it loses watertightness, soaks in water from a gap with the frame, and reaches the waterproof layer.
Conventionally, closed-cell polyethylene foam generally used as a backup material has no water absorption.
The present invention has been proposed in view of the above, and an object of the present invention is to provide a protection structure for a rising portion of a waterproof layer which is easy to construct without requiring skill and has excellent weather resistance.

[0004]

In order to achieve the above-mentioned object, the present invention provides a protection structure for a rising portion of a waterproof layer in which an upper end portion of a waterproof layer is located in a recess provided in an elevation of a building frame. In the presser foot for bringing the upper end portion of the waterproof layer into close contact with the vertical surface of the skeleton, there are an upright portion for pressing the upper end portion of the waterproof layer, and a bottom surface extending at a substantially right angle from near the lower edge of the vertical portion. Part and an upright portion rising from the bottom portion, a through hole is opened in the bottom portion outside the upright portion, and the presser foot is fixed to a building frame by fastening means, and a waterproof layer is formed. The upper end portion was sandwiched by the presser, a water-permeable backup material was interposed on the front side of the upright portion, and the space between the frame and the presser was sealed with a sealing material.

[0005]

The back-up material having continuous open cells in the vertical direction allows drainage of rainwater that has penetrated in the downward direction, thereby preventing water from entering the inside of the waterproof layer.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiment. FIG. 1 is a longitudinal sectional view around the upper end of a waterproof layer rising portion, and FIG. 2 is a longitudinal sectional view around the lower end of a waterproof layer rising portion. .

The protection structure for the rising portion of the waterproof layer according to the present invention comprises a presser 2 for pressing down the end of the waterproof layer 1 and a sealing for sealing between the presser 2 and the building frame 3 of the building. A material 4 and a backup material 5 interposed between the sealing material 4 and the presser foot 2 are provided.

The presser foot 2 is, for example, a fixed length of about 2000 mm made of, for example, aluminum or the like, and is disposed at the upper end of the rising portion of the waterproof layer 1 in the lateral direction. The presser foot 2 has an upright portion 6 for pressing the upper end portion 1a of the waterproof layer 1, a bottom portion 7 extending from the vicinity of the lower edge of the upright portion 6 at a substantially right angle, and an intermediate portion between the bottom portion 7 and the lower portion. And at least an upright portion 8 rising from the vicinity.

Further, the bottom portion 7 outside the upright portion 8 is provided.
, A first through hole 9a is opened, and a second through hole 9b is opened in the bottom surface portion 7 between the upright portion 8 and the upright surface portion 6. These through holes 9a and 9b have a diameter of, for example, about 3 mm, and are formed at intervals of about 200 mm along the longitudinal direction.

Further, in the illustrated embodiment, the water avoiding plate 10 extends obliquely downward from the lower edge of the upright portion 6 so as to be located below the first through-hole 9a and the second through-hole 9b. At the lower end of the water avoidance plate 10, a water piece 11 is extended downward.

The presser foot 2 shown in FIG.
The draining part 12 extends downward from the tip of the
Cover part 1 that is gently downwardly sloped downward from the lower end of 2
3 is extended, and two receiving plate portions 14a and 14b are hung from the cover portion 13 so as to face each other. These receiving plate portions 14a and 14b form an upper receiving portion 14 of a curtain plate 15 described later, and the outer receiving plate portion 14a located outside is slightly longer than the inner receiving plate portion 14b located inside.

The present invention relates to a presser foot 2 having the above-described structure.
Is fixed to the building frame 3 by fastening means, and the waterproof layer 1
Is clamped by the presser fitting 2. The fixing means is, for example, burying anchor members 16 at appropriate intervals in advance, for example, at intervals of 500 mm in the frame 3 such as a parapet, and fixing the anchor members 16 to the anchor members 16 at a height of, for example, about 6 mm. A screw 17 is screwed through a hole (not shown). In addition, a screw through hole 18 of, for example, about 11 mm is formed in the upright portion 8 at a position corresponding to the fixing hole, and the work is performed through the screw through hole 18.

An upper end portion 1a of the waterproof layer 1 is formed by the presser foot 2.
When sandwiching the waterproof layer 1, a gap of about 5 mm is provided between the upper end portion 1a of the waterproof layer 1 and the upper surface of the concave portion 19 provided in the frame 3, and the gap is filled with the coating material 20 and the presser foot 2, the coating material 20 is also applied between the upright portion 6 of the waterproof layer 1 and the upper end portion 1a of the waterproof layer 1 to the extent that it rises slightly, and the presser foot 2 is fixed to bring the coaching material 20 into close contact with the presser foot 2. Prevent rainwater from entering the top of the presser foot 2.

When the fixing of the presser foot 2 is completed, the upright portion 8
Is provided with a water-permeable backup material 5 on the front side. The backup material 5 is made of, for example, a polyethylene foam having open cells in the vertical direction, and allows water absorption and drainage from upper and lower end surfaces, but does not allow water absorption and drainage from the side surfaces. In order to provide such a backup material 5, an adhesive is applied to one surface of the backup material 5, adhered to the upright portion 8, and the upper end surface is brought into contact with the upper surface 19 a of the concave portion 19 provided in the frame 3. . Note that a space may be formed between the lower end surface of the backup material 5 and the bottom surface 7.

The material of the foam used for the backup material 5 as described above is such that the sealing material 4 is filled on the front side of the backup material 5 to form the frame 3 and the presser foot 2.
A polyethylene foam excellent in water resistance was assumed because the direct contact with the outside air and the sunlight was cut off by performing a sealing treatment with the resin and blocking direct sunlight. For example, when a urethane foam is used, it is excellent in weather resistance, but has some disadvantages in terms of water resistance as compared with polyethylene foam.

According to the protection structure of the rising portion of the waterproof layer 1 configured as described above, even if rainwater enters from between the sealing material 4 and the frame 3, the backup material 5 has open cells. As a result, this rainwater falls through open cells by gravity. And the first one established on the bottom part 7
Drained through the through hole 9a. Furthermore, even if the rainwater penetrates deeply beyond the upright portion 8, since the space between the upright portion 8 and the upright portion 6 is a space, the rainwater flows down to the bottom portion 7 and the second through hole 9b Drained from In addition, in the winter season, water that has entered the backup material 5 may freeze and thaw, but since the backup material 5 is formed of a foam, there is no fear of deterioration due to expansion force during freezing.

The rainwater drained from the first through-hole 9a and the second through-hole 9b falls downward. In the illustrated embodiment, however, the rainwater is drained below the two through-holes 9a and 9b. Since the plate 10 extends, the plate 10 falls onto the upper surface of the lower pressing concrete 21 or the cushion material 22 described later without hanging on the waterproof layer 1.

In the illustrated embodiment, the waterproof layer 1
A curtain plate 15 is provided on the front side of the rising portion of the panel. The curtain plate 15 is a plate material such as a flexible board or a cement plate, and prevents direct sunlight, dust and rainwater from being sprayed, and prevents the waterproof layer 1 from being deteriorated or peeled.

The upper surface of the curtain plate 15 is held by an upper receiving portion 14 comprising two receiving plate portions 14a and 14b extending from the presser foot 2 as described above. It is supported by a skirt member 23 fixed to a holding concrete 21 cast on the portion. In addition, a water gradient is appropriately provided on the top end surface of the holding concrete 21,
The cushion material 22 is interposed between the waterproof layer 1 and the waterproof layer 1.

The skirt member 23 is a fixed-size member made of aluminum or the like as the presser foot 2, and has a substantially L-shaped cross section. That is, a vertical vertical plate portion 24,
A horizontal plate portion 25 extending in the horizontal direction from near the lower edge of the vertical plate portion 24; and a narrow upper edge extending to the opposite side to the horizontal plate portion 25 on the upper edge of the vertical plate portion 24. A rib 26 is provided. On the front edge of the horizontal plate portion 25, a downward draining rib 27 is provided.

The skirt member 23 configured as described above is
For example, a screw 30 is screwed and fixed to an anchor member 29 previously embedded in the holding concrete 21 by a fixing means via a spacer 28 disposed on the upper surface of the holding concrete 21.

When the fixing of the skirt member 23 is completed, the curtain plate 15 is disposed. The arrangement of the curtain plate 15 is also very simple, and the upper edge of the curtain plate 15 is supported by the receiving plate portions 14a, 1
4b, and the lower edge portion may be fixed to the vertical plate portion 24 of the skirt member 23 with a tapping screw 31 or the like. Although a water gradient is formed on the upper surface of the holding concrete 21, the lower end surface of the curtain plate 15 is made horizontal by absorbing the water by the relative vertical movement of the skirt member 23.

The protection structure for the rising portion of the waterproof layer 1 as described above can function sufficiently even if the jaw-shaped recess 19 formed in the frame 3 is shallow, for example, about 20 mm. It is easy to cast concrete, and construction can be performed without skilled skills.

When the concrete is poured, a reinforcing member 32 as shown in FIG. 3 may be embedded. Such a reinforcing member 32 can be made of a synthetic resin such as vinyl chloride, and is fixed to the frame 3 by an appropriately protruding anchor portion 33. When the reinforcing member 32 is used, the amount of rainwater entering the back surface side of the waterproof layer 1 is extremely reduced, and the corners of the recess 19 are not damaged.

Further, the protruding corner of the jaw-shaped recess may be chamfered. However, in this case, the depth is required to be about 30 mm to 40 mm, depending on the size of the chamfer. When the chamfering process is performed in this manner, the corners of the recess are not damaged.

As described above, the present invention has been described with reference to the illustrated embodiments. However, the present invention is not limited to the above-described embodiments, and can be appropriately implemented unless the configuration described in the claims is changed. For example, the backup material may be any material as long as it has water permeability. In addition, it is desirable to have water permeability in the vertical direction, because the infiltrated rainwater is quickly disposed below by gravity.

[0027]

As described above, in summary, the present invention provides a protection structure for a rising portion of a waterproofing layer in which an upper end portion of a waterproofing layer is located in a recess provided in an elevational portion of a building frame. The presser foot that is in close contact with the vertical surface of the skeleton has a vertical surface portion that presses the upper end portion of the waterproof layer, a bottom surface portion that extends at a substantially right angle from near the lower edge of the vertical surface portion, and rises from the bottom surface portion. An upright portion is provided, a through hole is opened in the bottom portion outside the above-mentioned upright portion, the presser foot is fixed to the building frame by fastening means, and the upper end portion of the waterproof layer is sandwiched by the presser foot. In the front side of the standing part, a water-permeable backup material was interposed, and the space between the frame and the presser foot was sealed with a sealing material, so rainwater that had invaded beyond the sealing material, Can be drained down through backup material It is possible to reliably prevent the water from entering the inside of the waterproof layer. In addition, the present invention can be applied to a shallow concave portion of a skeleton that can be easily constructed without requiring skill, so that it is inexpensive, in a short period of time, has excellent weather resistance, and has an effective waterproof layer rising portion. Protection can be provided by simple construction.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view around the upper end of a rising portion of a waterproof layer.

FIG. 2 is a cross-sectional view around the lower end of a rising portion of a waterproof layer.

FIG. 3 is a sectional view of a concave portion of a skeleton provided with a reinforcing member.

[Explanation of Signs] 1 Waterproof layer 2 Presser foot 3 Frame 4 Sealing material 5 Backup material 6 Elevation part 7 Bottom part 8 Standing part 9a, 9b Through hole

Claims (1)

(57) [Claims] 1. A protection structure for a rising portion of a waterproof layer, wherein an upper end portion of a waterproof layer is located in a recess provided in an elevation portion of a building body of a building, wherein the upper end portion of the waterproof layer is brought into close contact with the rising surface of the building body. The presser foot is provided with an upright portion for pressing the upper end portion of the waterproof layer, a bottom portion extending at a substantially right angle from near the lower edge of the upright portion, and an upright portion rising from the bottom portion. A through hole is opened in the bottom portion outside the standing portion, the presser foot is fixed to the building frame by fastening means, and the upper end of the waterproof layer is sandwiched by the presser foot, A protection structure for a rising portion of a waterproof layer, wherein a water-permeable backup material is interposed on the front side and a sealing material is used to seal a gap between a frame and a presser foot.