JPS6143498B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a waterproof joint structure between an outer wall and a foundation of a semi-basement, and provides waterproofing treatment to the joint between the outer wall and the foundation in an extremely easy-to-implement form. The present invention provides a waterproof joint structure between the outer wall of a semi-basement and the foundation, which is especially suitable for forming a semi-basement using units.

That is, the waterproof joint structure between the outer wall and the foundation of a semi-basement according to the present invention is a waterproof joint structure between the outer wall body and the fabric foundation that constitute the outer wall of the semi-basement where the ceiling surface is located above the ground, and the above-mentioned outer wall At least the outer surface and lower end surface of the body buried underground, and at least the outer surface and upper end surface of the cloth foundation are waterproofed, and the outer wall body has a regular gasket interposed on the cloth foundation, and the outside of the regular gasket. It is installed with a joint formed on one side, and the joint is filled with a sealing material such as expanded polyurethane foam.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

Figure 1 shows a vertical cross-sectional view of the side of a semi-basement where the ceiling surface is located above the ground level GL.
Four steel columns 12, 12, 12, 12 are erected at the corners of the floor panel 11 on which the number 0 is arranged, and as shown in FIG. A waterproof unit 1 for configuring a semi-basement, which is formed by fixing outer wall bodies 14, 14, such as precast concrete panels or lightweight foamed concrete panels, through coupling fittings (not shown), respectively, is installed in a root cutting excavation part. A plurality of hanging jigs 50 are installed adjacent to each other on 4, and the root cutting excavation portion is then backfilled.

In the waterproof joint structure between the outer wall and the foundation of the semi-basement of the present invention, at least the underground outer surface and lower end surface of the outer wall bodies 14, 14, and at least the outer surface and upper end surface of the cloth foundation 4 are The outer wall bodies 14, 14 are installed on the cloth foundation 4 with a regular gasket 60 and a joint 6 outside the regular gasket 60. The portion is filled with a sealing material 61 such as expanded polyurethane foam.

To explain the embodiment in more detail, the above outer wall body 1
The waterproofing treatment of 4 and 14 is performed by applying a waterproof sheet 30 over the lower end surfaces of the outer walls 14, 14, the above-mentioned underground buried external surface, and the unstructured external surface above it by a certain width on the upper part of the above-mentioned non-underground external surface. After attaching the waterproof sheet, leaving the unattached portion 32, and abutting the water cut-off fitting 33 to the upper edge of the waterproof sheet and fixing the water cut-off fitting 33 to the outer wall bodies 14, 14 with the screws 34, the waterproof sheet is attached. A protective mortar 31 such as resin mortar is applied to a part of the underground outer surface of the sheet 30 and to a part of the non-underground outer surface. When fixing the drain fitting 33, a horizontal groove 1 is formed in a part of the non-underground external surface of the outer walls 14, 14 over the non-underground external surface.
5 is formed in advance, and the upper edge of the waterproof sheet 30 is positioned in the groove 15, and a part of the water cut-off fitting 33 is fitted and fixed in the groove 15 to completely cover the upper edge of the waterproof sheet 30. Preferably fixed. Note that the above-mentioned waterproofing treatment is usually performed before installing the unit. The waterproofing treatment may also be carried out by impregnating the lower part of the outer wall surface, the lower end surface, and the lower part of the inner wall surface with a waterproofing agent. For example, in this case, a waterproof sheet may not be attached to the lower end surface of the outer wall bodies 14, 14. I can do it.

Further, the cloth foundation 4 is waterproofed by attaching a waterproof sheet 40 to at least its upper end surface and outer surface. Of course, this does not prevent the waterproofing of the inner surface of the cloth foundation 4;
In fact, as shown in FIG. 3, a moisture-proof sheet 41 made of a polyethylene sheet is pasted over the inner surface of the cloth foundation 4 and the lower part of the concrete floor portion 51 (not shown).

Furthermore, when installing the waterproofed unit 1 on the waterproofed cloth foundation 4, the standard gasket 60 is provided between the lower end surface of each of the outer walls 14, 14 and the upper end surface of the cloth foundation 4. The size of the joint is such that it forms a joint 6 on the outside and seals between the lower end surface of the outer walls 14, 14 and the upper end surface of the cloth foundation 4. preferable. The load of the unit 1 is mainly supported by a hard elastic body 52 between the steel frame 10 and the cloth foundation 4 and an anchor bolt (not shown) passing through the hard elastic body 52.

Further, the sealing material 61 may be filled after the unit 1 is installed, using the standard gasket 60 as a back-up material, preferably on the outer surface of the underground waterproof sheet 30 and the outside of the waterproof sheet 40, as shown in FIG. It is better to add a waterproof sheet 62 between the surface and the surface. In addition, in Fig. 2, 63,6
3 is a caulking material that seals the upper and lower edges of the waterproof sheet 62.

In addition, in the drawing, 80 is a protective material such as a polypropylene hollow sheet, which is placed over the entire underground outer surface of the outer walls 14, 14 and the outer surface of the cloth foundation 4 before backfilling the root cut excavation part. This improves the waterproofing effect of semi-basement rooms. In addition, the protective material 80 is
As shown in FIG. 1, it is preferable to arrange the upper edge of the protective mortar 31 on the surface of the outer wall body 14 so as to coincide with the lower edge of the protective mortar 31, and after the arrangement is completed, there is a gap between that surface and the surface of the protective mortar 31. It is a good idea to apply waterproof sealing tape to the

Further, 81 is a normal mortar that is applied with a brush or the like to the outer surface of the protective mortar 31 immediately before the completion of backfilling of the root cut excavation part, and is used to give the appearance of a cloth foundation to the outer surface of a semi-basement that is not buried underground. be. Note that the normal mortar 81 is used as a base material for the protective mortar 31.
, and because the waterproof sheet 30 to which the protective mortar 31 is applied is firmly fixed to the outer wall 14 by the water-cutting fitting 33 and adhesive, and furthermore, the water-cutting fitting 33 can be used as a ruler. It can be applied extremely easily and accurately, and there is no risk of peeling.

Further, 35 is a sealing material, 53 is a heat insulating material in the floor panel 11, and 54 is a water collection pipe.

Furthermore, in the present invention, a wooden panel can be used as the outer wall body 14 in addition to the one in the embodiment, and in this case as well, it can be waterproofly bonded to the cloth foundation 4. However, in this case, the upper edge of the waterproof sheet 30 is often fixed with an adhesive tape without using the water cut-off fitting 33.

As described above, the waterproof joint structure between the outer wall of a semi-basement and the foundation of the present invention has the effect that waterproofing can be performed between the outer wall and the foundation in a form that is extremely easy to construct. As a result, the structure of the present invention is ideal for forming a semi-basement with a unit.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional view of the side part of a semi-basement containing an embodiment of the present invention, Fig. 2 is an enlarged longitudinal cross-sectional view of an embodiment of the present invention, and Fig. 3 shows the installation mode of a unit for constructing a semi-basement. FIG. 4...Fabric foundation, 6...Joint portion, 14...Outer wall body, 60...Standard gasket, 61...Sealing material.

Claims (1)

[Scope of Claims] 1. A waterproof joint structure between an outer wall constituting the outer wall of a semi-basement whose ceiling surface is located above the ground and a cloth foundation, comprising at least an underground outer surface and a lower end surface of the outer wall, At least the outer surface and upper end surface of the cloth foundation are waterproofed, and the outer wall is installed on the cloth foundation with a regular gasket interposed therein and a joint formed outside the regular gasket. , and the above-mentioned joints are filled with a sealing material such as polyurethane foam to provide a waterproof joint structure between the exterior wall of the semi-basement and the foundation. 2. A waterproof joint structure between an outer wall and a foundation of a semi-basement according to claim 1, wherein the waterproofing treatment is performed by adhering a waterproof sheet to the outer wall. 3. The outer wall and foundation of the semi-basement according to claim 1, wherein a waterproof sheet is additionally pasted on the outside of the sealing material between the outer surface of the buried underground and the outer surface of the cloth foundation. Waterproof joint structure with.