JPH0411042Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a double wall for dry areas that improves livability by keeping basements in a low-humidity state.

[Conventional technology]

In recent years, land prices in urban areas have skyrocketed, and buildings are becoming taller, and basements are also increasing in number of floors and increasing their floor space. Since the outside of the reinforced concrete walls (hereinafter referred to as RC) that form the above-mentioned basement are in direct contact with the soil, the temperature of the inside of the RC is approximately the same as that of the soil throughout the year. Therefore, if the indoor temperature is significantly higher than the RC inner surface, the indoor air will come into contact with the cold RC inner surface and drop below the dew point.
Condensation forms on the inside of the RC.

Conventionally, in order to avoid this, as shown in Figure 12, a concrete block (hereinafter referred to as
The inner wall 5 is formed by piling up moisture-permeable materials such as 4 (referred to as CB). In this state, no dew condensation occurs on the surface 5a of the inner wall 5 on the indoor 3 side, but the moisture in the room 3 passes through the inner wall 5 and condenses on the RC2 surface. Normally, this condensed water is led to and discharged into a water channel 6 provided at the bottom between the RC inner surface and the inner wall 5. This waterway 6 is also used when water leaks from the soil 1 side of RC2.

[Problem that the invention attempts to solve]

However, in order to build up the inner wall 5 by stacking the CB4, it is necessary to fill the joints with mortar, and if the stacking exceeds a certain height, a reinforced concrete girder 7 is provided in the middle to form the RC2. Connections must be reinforced, which requires manual labor in a humid and harsh environment. In addition, the thickness of CB4 is over 10 cm, and the joint mortar falls on the back.
Since it enters the waterway and the flow becomes poor, the inner wall 5 is connected to the waterway 6.
It had to be built at a predetermined distance 8 from the base, which had the disadvantage of reducing the usable floor space of the basement.

The present inventors searched for an alternative to the above CB4, and found that generally cement molded boards do not absorb or release water and undergo large expansion and contraction in dimensions, making them unsuitable for high-humidity locations such as basements, but they are suitable for autoclave curing. We focused on the fact that the cement molded plates produced by this method have dense crystals, have high moisture permeability, low water permeability and water absorption, and little dimensional change, and can yield plate-shaped molded products with high strength and relatively thin thickness. .

In order to attach the autoclave-cured cement-based plate-shaped molded bodies on the two RC surfaces at intervals, as shown in FIG. An underground column 12 is protruded according to the dimensions of By attaching it, a strong inner wall 5 is formed. Above back support base material 1
3 is usually attached to RC2 and inner wall board 11 with adhesive 15.
are glued to opposite sides of the

However, if the temperature of the RC2 side is lower than the temperature of the room 3, if the heat conduction of the back support base material is good,
This constitutes a cold bridge and causes dew condensation on the inner wall plate 11 surface. In order to avoid this, by using a synthetic resin foam as the back support base material 13, it is possible to prevent cold bridges and to have a function as a base material. The spacing between the underground pillars 12, 12 is narrow, and the number of underground pillars increases, which not only increases costs, but also causes the disadvantage that they tend to form a cold bridge.

In view of the above circumstances, the present invention allows the spacing of the underground columns 12 to be formed without being restricted by the dimensions of the inner wall board 11,
The purpose of this invention is to provide a double wall for a dry area that can be freely formed at an interval from two RC surfaces.

[Means for solving problems]

This invention was made to achieve the above-mentioned purpose, and its gist is that on the surface of the wall forming the basement,
In a double wall for a dry area with inner walls provided at intervals, the back side of the plate-shaped molded body of an autoclave-cured cement material forming the inner wall is attached to a plate-shaped column with one edge attached to the wall surface. The base material is supported by the other edge of the base material supporting the back of the basement, and the vertical joints of the plate-shaped moldings are attached to the wall surface along a line perpendicular to the basement floor surface and protrude. , a plurality of support bolts each having two nuts screwed together at the tips are provided, and a column-shaped base member is directly or indirectly fixed using the respective nuts of these support bolts. Double walled for dry area with support.

[Effect]

The double wall for dry areas of this invention is easy to install because the moisture-permeable inner wall board is supported and fixed at a predetermined interval from the RC surface by the back support base material and the joint support base material. There are very few cold bridges and no condensation occurs on the inner wall surface.

〔Example〕

1 to 3 show an embodiment of a double wall for a dry area according to the present invention, in which FIG. 1 is a cross section, and FIGS. 2 and 3 are a back support base material 13, This is a longitudinal cross-sectional view of the joint support base material 15, and the same parts as in FIGS. 12 and 13 are given the same reference numerals, and their explanation will be omitted.

The spacing between the base pillars 12, 12 may be set as necessary for forming the basement without being restricted by the dimensions of the inner wall board 11, but in order to avoid the trouble of cutting the inner wall board 11, the interval may be Inner wall board 11
It is preferable that the length is an integral multiple of 2 or more.

To form the inner wall 5 by attaching the inner wall plate 11 to the surface of the RC 2, one edge of the back support base material 13 is adhesively fixed to the RC surface of the inner wall plate 11 at the back position using an adhesive 15. Also, along a line perpendicular to the floor surface 16 of the RC2 surface corresponding to the joint portion of the inner wall plates 11, 11, the base of the support bolt 17 is connected at a predetermined interval to the RC2 surface. Fix it vertically. Two nuts 17a, 1 are attached to the tips of these support bolts 17, respectively.
7a, and these nuts 17a.
By fixing the columnar base member 18, a joint support base member 19 is formed.

Next, one end of the inner wall board 11 is attached to the underground pillar 12.
The joints 20 of the inner wall panels 11 are attached to the base material 1 supporting the joints with screws.
It is fastened to the base member 18 of 9. At this time, the inner wall plate 1
1 and the other end of the back support base material 13 are bonded together with an adhesive 15. In this way, the inner wall plates 11 are sequentially attached to form the inner wall 5.

The joint support base material 19 includes support bolts 17
and the nut 1 screwed onto the tip of this bolt 17.
7a, the supporting bolt 17 of the nut 17a is
By adjusting the position relative to the base member 1
The position of the joint portion 20 of the inner wall plate 11 of No. 8 can be freely moved. Further, when the back support base material 13 is made of synthetic resin foam, it is lightweight, easy to mold, and has good heat insulation properties, so it can be suitably used. Furthermore, inner wall board 1
1 may be a plate made of a cement material cured in an autoclave, but as shown in FIG. 21
It is preferable to use it because it is lightweight and has sufficient strength.

Further, in the above explanation, the inner wall was attached using the underground pillar 12, but the back support base material 13,
The inner wall can be easily formed using only the joint support base material 19 without depending on the underground pillar 12.

Figures 5 to 11 show the joint support base material 1.
9, which shows various shapes of the base member 18 fixed by the nut at the end of the support bolt 17. That is, FIG. 5 shows a columnar base member 18 having a U-shaped cross section and bent opposite ends, using two plates 22, 22 held by a nut 17a, to form the above-mentioned bent portion. 2
Fig. 6 shows a column-shaped support member 18a with a U-shaped cross section, and a column-shaped fastening member with a U-shaped cross section and dimensions such that both sides of the support member 18a come into contact with each other. 18b are joined together on both sides and fastened with bolts 24 to form a base member 18, which is fixed to the support bolt 17 by drilling a hole in the back of the support member 18a. FIG. 7 shows an L-shaped cross section. A hole is drilled in one surface of the columnar support member 18a and fixed to the support bolt 17, and one side of the columnar fastening member 18b having a U-shaped cross section and the other surface of the support member are connected with the bolt 24. Fig. 8 shows a case in which a fastening member 18b having an L-shaped columnar cross section is used instead of the U-shaped fastening member in Fig. 7, and Fig. 9 shows , one side of a base member 18 having a U-shaped cross section is secured to a support bolt 17. 10 shows a base member 18 in which a heat insulating material 25 such as rubber is provided on the surface that contacts the inner wall plate 11, and FIG. 11 shows a base member 18 with a nut 17a attached to the support bolt 17.
8, they are locked through a washer 26 and a heat insulating material 25 such as rubber, both of which further reduce cold bridges.

The above-mentioned joint support base material is selected and used depending on each situation.

[Effect of idea]

As mentioned above, the double wall for dry areas according to the present invention uses moisture-permeable inner wall plates cured in an autoclave, so there is no condensation on the surface of the inner wall plates. Since it is formed by attaching it to the back support base material and joint support base material provided on the wall surface to be formed, on-site construction is easy and, for example, the construction period can be shortened to half that of the CB construction method. In addition, since it does not rely on underground pillars and does not use joint mortar, it is possible to increase the usable area of the basement without interfering with the flow of the waterway even if the inner wall is built close to the waterway. It has its advantages.

[Brief explanation of the drawing]

1 to 3 show an embodiment of a double wall for a dry area according to the present invention, FIG. 1 is a cross-sectional plan view, and FIG. Figure 3 is a longitudinal sectional view taken along the - line arrow in Figure 1;
Figure 4 is a perspective view of the hollow inner wall plate, Figures 5 to 1
Figure 1 is a cross-sectional plan view showing various examples of joint support base materials, Figure 12 is a diagram showing an example of a conventional double wall for dry areas, and Figure 13 is a double wall using autoclave-cured inner wall plates. However, this is a diagram showing an example in which there are many cold bridges. 1...Soil, 2...Wall forming a basement (RC), 3...Indoor, 4...Concrete block (CB), 5...Inner wall, 5a...Indoor surface, 6
... Waterway, 11 ... Autoclave-cured plate-shaped molded body (inner wall board), 12 ... Underground column, 13 ... Back support base material, 14 ... Fastener, 15 ... Adhesive,
16... Floor surface, 17... Support bolt, 17a...
Nut, 18... Base member, 18a... Support member, 18b... Fastening member, 19... Joint support base material, 20... Joint part, 21... Hollow inner wall board,
22... Plate body, 23... Bent portion, 24... Bolt, 25... Insulating material, 26... Washer.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In a double wall for a dry area in which inner walls are provided at intervals on the surface of a wall forming a basement, an autoclave-cured cement-based material plate forming the inner wall. The back side of the shaped molded body is supported by the other edge of a plate-shaped columnar back support base material whose one edge is attached to the wall surface, and the vertical joints of the plate shaped molded bodies are attached to the wall surface. , a plurality of support bolts are provided whose bases are attached and protrude along a line perpendicular to the basement floor surface, and two nuts are screwed together at the tips, and each nut of these support bolts is used to A double wall for a dry area, characterized in that it is supported directly or indirectly by a joint support base material to which a columnar base member is fixed. (2) An autoclave-cured plate-shaped molded body of a cementitious material is an autoclave-cured hollow plate formed by extrusion molding of a cementitious material and has a large number of parallel penetrations in the extrusion direction. Claim 1 for utility model registration, which is a molded article
Double wall for dry areas as described in section. (3) The double wall for a dry area according to claim 1 or 2, wherein the back support base material is a plastic foam back support base material. (4) The base member is integrated along the support member directly or indirectly supported by two nuts, and the vertical joint portion of the plate-shaped molded body is locked. A double wall for a dry area according to any one of claims 1, 2, and 3 of the utility model registration claim, which is a base member constituted by a fastening member. (5) The above-mentioned columnar body in which the base member has a U-shaped cross section and both ends are bent to face each other between two plates held by two nuts and with a hole punched approximately in the center. Scope of utility model registration claims No. 1, 2, which is a base member with a bent part clamped and fastened
Double wall for dry area according to any of item 3. (6) The base member has a pillar-shaped support member with a U-shaped cross section that is punched in the back and is clamped and fixed by two nuts of a support bolt, and has dimensions such that both sides of the base member abut on both sides of the support member. The double wall for a dry area according to claim 4, which is a base member in which both sides of columnar fastening members having a U-shaped cross section are overlapped and bolted together. (7) The base member has a pillar-shaped support member with an L-shaped cross section that is perforated on one side and is clamped and fixed by two nuts of a support bolt, and a columnar support member with a cross section that is L-shaped on the other side of the support member. overlap and abut one side of both sides of the U-shaped columnar fastening member,
The double wall for a dry area according to claim 4 of the utility model registration claim, which is a bolted base member. (8) The base member has a pillar-shaped support member with an L-shaped cross section that is perforated on one side and is clamped and fixed by two nuts of the support bolt, and a columnar support member with a cross section that is L-shaped on the other side of the support member. The double wall for a dry area according to claim 4, which is a base member in which one side of an L-shaped columnar fastening member is overlapped and abutted, and is bolted. (9) Any of Claims 1, 2, or 3 of the Utility Model Registration Claim, in which the base member is a base member that has a U-shaped cross section, has a hole drilled on one side, and is held by two nuts of a support bolt. Double walls for dry areas as described in. (10) Scope of Utility Model Registration Claims No. 1, 2, 3, 4, 5, where the base member is a base member with a heat insulating material layer provided on the surface that abuts the back of the joined part of the plate-shaped molded body.
The double wall for dry areas according to any one of items 6, 7, 8, and 9. (11) Utility model registration claims Nos. 1, 2, 3, 4, 5, 6, 7, and 8, in which the two nuts of the support bolt are nuts that clamp the base member through the washer and the insulation layer, respectively. , 9 or 10. Double wall for dry area.