JP2021055385A - Strut waterproof structure - Google Patents

Abstract

To provide a strut waterproof structure which can perform waterproof construction in the peripheral part of the strut members without necessity of any special skills.SOLUTION: This strut waterproof structure waterproofs the peripheral part of the strut member 82 protruding from an opening 81 formed in an outdoor flat ground part 80. This strut waterproof structure includes a flat-field waterproofing accessory 1 having a flat-side sheet part 1a located on the upper surface of the flat-field part 80 around the strut member 82 and a strut-side sheet part 1b covering the lower surface of the strut member 82, a secondary waterproof tape part 3 that seals the boundary between the strut side sheet portion 1b and the surface of the strut member 82 as a secondary waterproof part, an upper waterproof accessory 2 covered so that the upper side is located on the surface of the secondary waterproof tape part 3 and a primary waterproof tape part 5 that seals the boundary between the upper side of the upper waterproof accessory 2 and the surface of the strut member 82 as a primary waterproof part.SELECTED DRAWING: Figure 1

Description

The present invention relates to a strut waterproof structure that waterproofs a peripheral portion of a strut member projecting from an opening formed in an outdoor flat ground portion.

Patent Document 1 discloses a waterproof structure of a column base portion. In the waterproof structure of the column base, a sealing agent is applied to the upper surface of the column base, and a strip-shaped mounting sheet whose surface is at least made of a synthetic resin such as polyvinyl chloride is applied on the sealing agent. A waterproof member made of the same type of synthetic resin as the synthetic resin on the surface of this mounting sheet is attached by pasting it so that both ends overlap, and driving a fastener into at least the part where both ends of the mounting sheet overlap. It is a waterproof structure in which the upper end edge and the upper end edge of the mounting sheet are welded and mounted so as to be substantially aligned with each other, and the upper end edge portion of the mounting sheet and the waterproof member is caulked.

Japanese Unexamined Patent Publication No. 10-212794

However, in the above-mentioned conventional technique, the attachment work by the above-mentioned welding is required, and skill is required for waterproofing the column base portion.

In view of the above circumstances, it is an object of the present invention to provide a strut waterproof structure capable of waterproofing the peripheral portion of the strut member without requiring special skill.

The strut waterproof structure of the present invention is a strut waterproof structure that waterproofs the peripheral portion of the strut member protruding from the opening formed in the outdoor flat ground portion in order to solve the above problems.
A flat-field-side waterproofing accessory having a flat-field side sheet portion located on the upper surface of the flat-field portion around the strut member and a strut-side sheet portion covering the lower surface of the strut member,
A secondary waterproof portion that seals the boundary between the strut-side sheet portion and the surface of the strut member,
The upper waterproofing accessory covered so that the upper side is located on the surface of the secondary waterproofing part,
A primary waterproof portion that seals the boundary between the upper side of the upper waterproof accessory and the surface of the support column member,
It is characterized by having.

With the above configuration, the boundary between the upper side of the upper waterproof accessory and the surface of the strut member is sealed as the primary waterproof portion, and the strut-side sheet portion of the flat-field side waterproof accessory and the strut member The boundary with the surface is sealed as a secondary waterproof part. Since the standard members of the upper waterproofing accessory and the flat ground side waterproofing accessory are used for each of the primary waterproofing and the secondary waterproofing, waterproofing of the peripheral portion of the support column member can be easily and accurately performed. That is, the peripheral portion of the support column member can be waterproofed without requiring any special skill.

An overlapping portion that overlaps with the outer surface side of the support column side sheet portion may be formed on the lower side of the upper side of the upper waterproof accessory. According to this, rainwater from above can flow not on the outer surface of the support column side sheet portion but on the outer surface of the upper waterproofing accessory.

The overlapping portion of the upper waterproofing accessory and the upper side may be formed in a stepped manner. According to this, for example, in arranging the holding metal fitting described later, the stepped portion can be used for positioning the holding metal fitting.

An elastic waterproof portion may be provided between the secondary waterproof portion located on the outer surface side of the support column side sheet portion and the overlapping portion of the upper waterproof accessory. According to this, it is possible to suppress the intrusion of rainwater from the gap between the secondary waterproof portion and the upper waterproof accessory.

A hem portion that extends diagonally downward is formed on the lower side of the upper waterproof accessory, and the hem portion may come into contact with or approach the inner surface of the decorative cover member that covers the support column member. According to this, the rainwater that comes in by blowing up the wind from the lower side of the decorative cover member can be turned off at the hem portion.

A notch may be formed in the hem. According to this, even if rainwater enters the upper side of the hem portion, the rainwater can flow downward from the notch portion.

A holding metal fitting may be provided so that a portion of the primary waterproof portion located on the upper side of the upper waterproof accessory is pressed against the upper side of the upper waterproof accessory. According to this, it is possible to suppress the formation of a gap between the upper side of the upper waterproofing accessory and the primary waterproofing portion by the pressure welding, and the upper part of the upper waterproofing accessory can be pressed. It can be pressed against the surface of the secondary waterproof portion or the support column member.

According to the present invention, the boundary between the upper side of the upper waterproofing accessory and the surface of the strut member is sealed as a primary waterproofing portion, and the strut-side sheet portion of the flat-field side waterproofing accessory and the surface of the strut member are surfaced. The boundary with is sealed as a secondary waterproof part. Since two standard members, the flat-field side waterproofing accessory and the upper waterproofing accessory, are used for each of the primary waterproofing and the secondary waterproofing, waterproofing of the peripheral portion of the support column member is easy and accurate. It has the effect of being able to do it.

It is the schematic vertical sectional view which showed the support column waterproof structure of embodiment. It is explanatory drawing which showed the construction process of the support | support waterproof structure of FIG. It is explanatory drawing which showed the construction process of the support | support waterproof structure of FIG. It is explanatory drawing which showed the construction process of the support | support waterproof structure of FIG. It is explanatory drawing which showed the construction process of the support | support waterproof structure of FIG.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
The support column waterproof structure of this embodiment is applied to, for example, a support column member that supports a handrail arranged on a peripheral edge such as a rooftop. As shown in FIG. 1, this strut waterproof structure waterproofs the peripheral portion of the strut member 82 protruding from the opening 81 formed in the outdoor flat ground portion 80. The support column member 82 is made of a plate material having a rectangular cross section, and a lower flange portion (not shown) is erected and supported on a beam of a building by using bolts or the like. Further, the flat ground portion 80 is configured to include a plywood, a gradient plate, a waterproof base layer, and the like. Further, this support column waterproof structure is provided at a position lower than the fixing portion 82a for fixing the handrail.

In the prop waterproof structure, a flat-side waterproof accessory 1 made of a weather-resistant sheet material is used. The flat-field waterproofing accessory 1 includes a substantially quadrangular flat-field side sheet portion 1a located on the upper surface of the flat-field portion 80 around the strut member 82 and a strut-side sheet portion 1b that covers the lower surface of the strut member 82. Have. The strut-side sheet portion 1b is formed in a flat square tubular shape that matches the rectangular cross section of the strut member 82.

At the boundary between the support column side sheet portion 1b and the surface of the support column member 82 (hereinafter referred to as a secondary waterproof boundary), a secondary waterproof tape portion (secondary waterproof portion) is provided so as to seal the secondary waterproof boundary. ) 3 is provided. The secondary waterproof tape portion 3 is made of, for example, a butyl tape coated with an adhesive, and can be obtained by an operator wrapping and attaching the butyl tape. The top end (secondary waterproof boundary top end) of the support column side sheet portion 1b is set at a position higher than the overflow pipe (not shown). Further, the upper portion of the support column side sheet portion 1b is adhered to the surface of the support column member 82 with an adhesive.

Further, this support column waterproof structure includes an upper waterproof accessory 2. The upper waterproof accessory 2 is, for example, a molded product using ethylene propylene diene rubber (EPDM).

The upper waterproof accessory 2 is covered with the support member 82 so that the upper cylinder portion 21, which is a portion on the upper side thereof, is located on the surface of the secondary waterproof tape portion 3 on the support member 82. .. The upper tubular portion 21 is formed in a flat square tubular shape that matches the rectangular cross section of the column member 82. Further, on the lower side of the upper cylinder portion 21, a square tubular central cylinder portion (overlapping portion) 22 located on the peripheral side of the upper portion of the support column side seat portion 1b is located. Further, the central tubular portion (overlapping portion) 22 of the upper waterproof accessory 2 and the upper tubular portion 21 are formed in a stepped shape.

Further, a hem portion 23 having a substantially quadrangular pyramid shape is formed on the lower side of the central tubular portion 22. The hem portion 23 extends diagonally downward on the lower edge side of the upper waterproof accessory 2, and comes into contact with or approaches the inner surface of the decorative cover member 83 that covers the support column member 82.

In the hem portion 23, notches 23a are formed in each corner side portion by cutting and expanding the four corner side portions in the substantially quadrangular pyramid trapezoidal shape to a length of about 20 mm (see FIG. 5). ).

Between the secondary waterproof tape portion 3 located on the outer surface side of the support column side sheet portion 1b and the central tubular portion (overlapping portion) 22 of the upper waterproof accessory 2, for example, elastic water blocking made of a foam material. The part 4 is provided.

Then, the primary waterproof boundary is sealed at the boundary between the upper portion of the upper tubular portion 21 of the upper waterproof accessory 2 and the surface of the support column member 82 (hereinafter referred to as the primary waterproof boundary), and the above 2 A primary waterproof tape portion (primary waterproof portion) 5 located as a layer outside the secondary waterproof tape portion 3 is provided. The primary waterproof tape portion 5 is made of, for example, a butyl tape coated with an adhesive, and can be obtained by an operator wrapping and attaching the butyl tape.

On the outside of the primary waterproof tape portion 5, a holding metal fitting 6 that fits inside the decorative cover member 83 is provided. The presser foot 6 has the primary waterproof tape portion 5 pressed against the upper tubular portion 21 above the upper waterproof accessory 2. The holding metal fitting 6 is a metal fitting including a fastening portion 63 located on the short side side of the upper cylinder portion 21 via a step portion 62 (see FIG. 5) from a holding portion 61 located on the long side side of the upper cylinder portion 21. The pair of metal fittings are inverted from each other, and the ends of the fastening portion 63 and the holding portion 61 are brought close to each other so that the holding portion 61 sandwiches the long side of the upper cylinder portion 21. The thickness of the presser foot 6 is prevented from becoming as thick as possible at the presser portion 61. The fastening portion 63 is provided with, for example, bolts and nuts.

With the above configuration, the boundary between the upper cylinder portion 21 on the upper side of the upper waterproof accessory 2 and the surface of the support column member 82 is sealed as the primary waterproof portion, and the flat ground side waterproof accessory 1 is described above. The boundary between the support column side sheet portion 1b and the surface of the support column member 82 is sealed as a secondary waterproof portion. Since the standard members of the upper waterproofing accessory 2 and the flat ground side waterproofing accessory 1 are used for each of the primary waterproofing and the secondary waterproofing, waterproofing of the peripheral portion of the support column member 82 is easy and accurate. Can be done.

When the central tubular portion (overlapping portion) 22 that overlaps the outer surface side of the support column side sheet portion 1b is formed on the upper waterproof accessory 2, rainwater from above is not discharged from the outer surface of the support column side sheet portion 1b. It can be flushed on the outer surface of the upper waterproof accessory 2.

When the elastic waterproof portion 4 is provided between the secondary waterproof tape portion 3 located on the outer surface side of the support column side sheet portion 1b and the central cylinder portion (overlapping portion) 22 of the upper waterproof accessory, the secondary waterproof portion 4 is provided. It is possible to suppress the intrusion of rainwater from the gap between the waterproof tape portion 3 and the upper waterproof accessory 2.

When the hem portion 23 that expands outward and downward is formed on the lower side of the upper waterproof accessory 2, and the hem portion 23 comes into contact with or approaches the inner surface of the decorative cover member 83 that covers the support column member 82, the makeup The rainwater that comes in from the lower side of the cover member 83 due to the wind blowing up can be repelled by the hem portion 23.

When the notch 23a is formed in the hem 23, even if rainwater enters the upper side of the hem 23, the rainwater can flow downward from the notch 23a.

When the presser fitting 6 for pressing the portion of the primary waterproof tape portion 5 located on the upper cylinder portion 21 side with the upper cylinder portion 21 is provided, the upper side of the upper waterproof accessory 2 and the above 1 are provided by the pressure welding. It is possible to suppress the formation of a gap with the secondary waterproof tape portion 5, and the upper tubular portion 21 of the upper waterproof accessory 2 is pressed against the surface of the secondary waterproof tape portion 3 and the support column member 82. be able to.

When the central tubular portion (overlapping portion) 22 of the upper waterproof accessory 2 and the upper tubular portion 21 are formed in a stepped shape, in the arrangement of the holding metal fitting 6, the stepped portion is formed. It can be used for positioning the presser foot 6.

Next, a method of constructing the above-mentioned prop waterproof structure will be described. As shown in FIG. 2, the support member 82 projecting from the opening 81 formed in the outdoor flat ground portion 80 is covered with the flat ground side waterproofing accessory 1 from above. At this time, a secondary waterproof boundary is formed at the boundary between the support column side sheet portion 1b and the surface of the support column member 82. Therefore, as shown in FIG. 3, the secondary waterproof tape portion is formed so as to close the secondary waterproof boundary. 3 is wound around the support column member 82. Next, the elastic waterproof portion 4 is attached to the outside of the portion of the secondary waterproof tape portion 3 located on the outer surface side of the support column side sheet portion 1b.

Then, as shown in FIG. 4, the upper waterproof accessory 2 is fitted from above the support column member 82. At this time, since a primary waterproof boundary is formed at the boundary between the upper portion of the upper tubular portion 21 of the upper waterproof accessory 2 and the surface of the support column member 82, the primary waterproof boundary is sealed so as to seal the primary waterproof boundary. The waterproof tape portion 5 is wound around the support column member 82. Next, as shown in FIG. 5, a holding metal fitting 6 is arranged on the outside of the primary waterproof tape portion 5 located on the upper tubular portion 21 of the upper waterproofing accessory 2, and the holding metal fitting 6 causes the above 1 Next, the waterproof tape portion 5 is pressed against the upper cylinder portion 21.

After that, the work of attaching the decorative cover member 8 and attaching the handrail is performed.

Although the embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited to those of the illustrated embodiments. Various modifications and modifications can be made to the illustrated embodiment within the same range as the present invention or within the same range.

1: Flat-field side waterproof accessory 1a: Flat-field side sheet part 1b: Strut-side sheet part 2: Upper waterproof accessory 3: Secondary waterproof tape part (secondary waterproof part)
4: Elastic water stop part 5: Primary waterproof tape part (primary waterproof part)
6: Presser hardware 21: Upper cylinder (upper side)
22: Central cylinder (overlapping part)
23: Hem portion 23a: Notch portion 61: Pressing portion 62: Step portion 63: Fastening portion 80: Flat area 81: Opening 82: Strut member 82a: Fixing portion 83: Decorative cover member

Claims (7)

It is a strut waterproof structure that waterproofs the peripheral part of the strut member protruding from the opening formed in the outdoor flat area.
A flat-field-side waterproofing accessory having a flat-field side sheet portion located on the upper surface of the flat-field portion around the strut member and a strut-side sheet portion covering the lower surface of the strut member,
A secondary waterproof portion that seals the boundary between the strut-side sheet portion and the surface of the strut member,
An upper waterproof accessory covered so that the upper side is located on the surface of the secondary waterproof tape portion, and
A primary waterproof portion that seals the boundary between the upper side of the upper waterproof accessory and the surface of the support column member,
A prop waterproof structure characterized by being equipped with. The strut waterproof structure according to claim 1, wherein an overlapping portion overlapping the outer surface side of the strut side sheet portion is formed on the lower side of the upper side of the upper waterproof accessory. The strut waterproof structure according to claim 2, wherein the overlapping portion of the upper waterproof accessory and the upper side are formed in a stepped manner. In the column waterproof structure according to claim 2 or 3, an elastic waterproof portion is provided between the secondary waterproof portion located on the outer surface side of the column side sheet portion and the overlapping portion of the upper waterproof accessory. Prop waterproof structure characterized by being provided. In the support column waterproof structure according to any one of claims 1 to 4, a hem portion extending diagonally downward is formed on the lower side of the upper waterproof accessory, and a makeup covering the support column member is formed. A strut waterproof structure characterized in that the hem is in contact with or close to the inner surface of the cover member. The strut waterproof structure according to claim 5, wherein a notch is formed in the hem portion. In the support column waterproof structure according to any one of claims 1 to 6, the portion of the primary waterproof portion located on the upper side of the upper waterproof accessory is placed on the upper side of the upper waterproof accessory. A strut waterproof structure characterized by being equipped with a presser foot to be pressed.

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