JP6883365B1 - Foundation structure for ant prevention - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a basic structure for ant-proofing of a wooden structure exhibiting a high ant-proofing effect without using an insecticide. SOLUTION: A ant-proof foundation structure 100 is a solid foundation structure 30 for a wooden structure including a bottom plate portion 10 and a rising portion 20 extending in a vertical direction from an outer edge portion of the bottom plate portion 10, and a solid foundation structure 30. It has a bottom foamed resin body 40 for ant-proofing embedded below and a side foamed resin body 60 for ant-proofing arranged along the lateral side surface of the rising portion 20, and has a bottom foamed resin body for ant-proofing. Both the resin body 40 and the side foamed resin body 50 include a foamed bead molded body, and a dovetail member 60 having a hard covering portion 62 covering the upper end surface 110 of the side foamed resin body 50 is provided. [Selection diagram] Fig. 1

Description

The present invention relates to a foundation structure for a wooden structure, which can prevent termites from feeding damage.

Termite feeding damage is a serious problem in wooden structures, and various termite prevention techniques have been proposed conventionally.
Generally, a method of injecting a chemical insecticide for ant prevention into wood and killing termites that ate the wood, or a method of directly spraying a chemical insecticide for ant prevention on the ground around the foundation concrete, etc. Has been known for a long time. However, the method of injecting a chemical insecticide into wood is based on the premise that termites eat the wood, so the deterioration of the wood cannot be rectified. In addition, the method of spraying the chemical pesticide directly on the ground may have an adverse effect on the natural environment and the human body.

Therefore, for example, as in Patent Document 1 below, a liquid agent containing polyethylene glycol, water, and a boric acid-based compound is applied to the heat insulating material used in the basic heat insulating method in advance to obtain a foamed resin in which termites are relatively soft. A technique for preventing termites from eating and killing termites that have eaten foamed resin is disclosed.
Further, in Patent Document 2 below, a first liquid containing an isocyanate component for constituting urethane, a polyol component, and a second liquid containing a permethrin solution and a borate aqueous solution are used to prevent urethane foam in the field. A technique for using permethrin as a heat insulating material for a house is disclosed.

As in Patent Documents 1 and 2 described above, it is possible to kill termites before the termites reach the wood by containing the chemical in the foamed resin body instead of the wood and arranging it along the wood part such as the base. is there.

Japanese Unexamined Patent Publication No. 2013-234484 Japanese Unexamined Patent Publication No. 2019-015097

However, the above-mentioned prior art has the following problems. That is, arranging a member containing an insecticide on the foundation of a wooden house may have a harmful effect on the people living there. Boric acid, which is often used as an insecticide, is generally said to be not very toxic to mammals with kidneys, but it is said that boric acid has a high concentration in the process of producing a foamed resin containing boric acid. If acid is accidentally attached to the skin or inhaled into the body, it may have an adverse effect on the human body.

Therefore, it is desired to provide a basic structure for termite prevention, which makes it difficult for termites to reach a wooden part such as the base of a wooden structure and does not use an insecticide.

The present invention has been made in view of the above problems, and specifically, the present invention provides a basic structure for ant-proofing of a wooden structure that exhibits a high ant-proofing effect without using an insecticide. It is a thing.

The anti-termite foundation structure of the present invention is a solid foundation structure for a wooden structure having a bottom plate portion and a rising portion extending in the vertical direction from the outer edge portion of the bottom plate portion, and is embedded below the solid foundation structure. It has a bottom foamed resin body for anti-termite and a side foamed resin body for anti-termite arranged along the lateral side surface of the rising portion, and the bottom foamed resin body for anti-termite and the side portion. Each of the foamed resin bodies includes a foamed bead molded body, and is characterized in that a dovetail member having a hard coating portion covering the upper end surface of the side foamed resin body is provided.

In the ant-proof foundation structure of the present invention, it is possible to prevent termite feeding damage in a wooden structure by using a foamed bead molded body without using an insecticidal agent for the foundation structure or the surrounding ground.

It is schematic cross-sectional view of the foundation structure for ant prevention which concerns on 1st Embodiment of this invention. (A) is a schematic partial cross-sectional view of the dovetail region in the first embodiment, and (B) is a schematic cross-sectional view showing a different aspect of the dovetail region. (A) to (C) are schematic cross-sectional views showing different aspects of the dovetail region. (A) is a perspective view of a water permeable member used in the first embodiment of the present invention, and (B) is a perspective view of a modified example of a foamed resin body used in the water permeable member. It is the schematic sectional drawing of the foundation structure for ant prevention which concerns on the 2nd Embodiment of this invention.

The present invention does not use chemical pesticides or the like for the foundation structure or the surrounding ground, but uses a foamed bead molded body to construct a repellent environment in which termites do not easily approach the entire foundation, thereby preventing termites in wooden structures. Is the purpose.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In all drawings, similar components are designated by the same reference numerals, and duplicate description will be omitted as appropriate.
The various components of the present invention do not have to be individually independent, and a plurality of components are formed as one member, and one component is formed of a plurality of members. It is allowed that one component is a part of another component, that a part of one component overlaps with a part of another component, and so on. In the illustrated embodiment of the present invention, for the sake of easy understanding, there are cases where a specific member is shown relatively large or small as a whole, but in each case, the dimensional ratio of each configuration of the present invention is shown. It is not limited.

<First Embodiment>
Hereinafter, the anti-termite basic structure 100 according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 4.
FIG. 1 is a schematic cross-sectional view showing the ant-proof foundation structure 100 according to the first embodiment of the present invention. FIG. 2A is a schematic partial cross-sectional view showing the dovetail region 150 in the rising upper region of the anti-termite foundation structure 100, and FIG. 2B is a schematic partial cross-sectional view showing the dovetail region 150 of a different aspect. Is. 3 (A) to 3 (C) are schematic partial cross-sectional views showing different aspects of the dovetail region 150. FIG. 4A is a perspective view of the water permeable member 70 provided in the ant-proof foundation structure 100, and FIG. 4B is a perspective view of a modified example of the water permeable foam resin body 72 used for the water permeable member 70. is there.
In the following description, the terms outside and inside may be used as appropriate for the present invention, but this indicates a direction at an arbitrary point, and specifically, the inside of a building constructed on a foundation structure. The side is the inside and the outdoor side is the outside.

First, an outline of the ant-proof foundation structure 100 of the present embodiment will be described.
As shown in FIG. 1, the ant-proof foundation structure 100 includes a solid foundation structure 30 for a wooden structure including a bottom plate portion 10 and a rising portion 20 extending in the vertical direction from the outer edge portion of the bottom plate portion 10, and a solid foundation structure. An anti-termite foamed resin body 40 (hereinafter, also simply referred to as a bottom foamed resin body 40) embedded below 30 and a side foamed resin for anti-termite arrangement arranged along the lateral side surface of the rising portion 20. It has a body 50 (hereinafter, also simply referred to as a side foamed resin body 50).
As the bottom foamed resin body 40 and the side foamed resin body 50, a foamed resin body configured to include a foamed bead molded body is used. The upper end surface of the side foamed resin body 50 is covered with a dovetail member 60 having a hard covering portion 62.

The termite-proof foundation structure 100 having the above-described configuration uses members such as a bottom foamed resin body 40 and a side foamed resin body 50 including a foamed bead molded body without using a chemical pesticide or the like, and termites are formed on the entire foundation. Build a repellent environment that is difficult to approach. As a result, the ant-proof foundation structure 100 can safely protect the human body from ants.

The effects of the present invention will be described in more detail below.
In the present invention, when a foamed bead molded product and a non-foamed bead molded product molded by another foam molding method such as extrusion molding are embedded in the ground under a wooden structure, the foamed bead molded product is used. I found that white ants tended to stay away from the building. Even if the constituent resins of the foamed bead molded product and the non-foamed bead molded product are the same, there is a similar tendency.
Although the reason for this finding is not clear, the present inventor presents that the foamed bead molded body vibrates slightly when absorbing the vibration, which does not create a repellent environment for termites. I guess. For example, the polystyrene-based resin foamed bead molded product has a stronger tendency to absorb ambient vibrations and to vibrate weakly than the polystyrene-based resin foamed product formed by extrusion molding or injection molding. In the wooden structure and the ground on which the wooden structure is built, the vibration generated in the surrounding roads and factories always propagates through the ground and is generated by the activities of the residents of the wooden building. It is said that daily vibration is generated in the range of about 40 dB to 60 dB. Therefore, when the foamed bead molded body is placed along the foundation structure of the wooden structure or around the foundation structure, the foamed bead molded body constantly vibrates weakly due to the above-mentioned ground vibration and daily vibration, and the weak vibration repels white ants. It is presumed that the environment can be constructed.

That is, the termite-proof foundation structure 100 is a foamed resin body (bottom foamed resin body 40) including a foamed bead molded body directly or indirectly along the lower side of the solid foundation structure 30 and the rising portion 20 of the solid foundation structure 30. By arranging the side foamed resin body 50), a repellent environment for termites is constructed around the solid foundation structure 30 instead of killing insects using a chemical as in the prior art, thereby creating a wooden structure (not shown). It is intended to prevent termites in buildings.
As the foamed resin body used in the anti-termite basic structure 100, one in which no chemical is injected is used. Therefore, although the foamed bead molded product contained in the side foamed resin body 50 vibrates slightly, the possibility that the side foamed resin body 50 is eaten by termites is not zero. However, in the anti-termite foundation structure 100, since the bottom foamed resin body 40 is arranged below the solid foundation structure 30, an environment in which termites are unlikely to approach the vicinity of the solid foundation structure 30 is constructed in the ground. Further, since the side foamed resin body 50 itself vibrates slightly, termites do not like to approach it. Therefore, in the anti-termite basic structure 100, termites are significantly suppressed from climbing on the side foamed resin body 50. In addition, even if termites try to break through the side foamed resin body 50 arranged in the rising portion 20 and move to the base 82 side, the upper end surface of the side foamed resin body 50 has a hard covering portion 62. Since the ant return member 60 to be provided is arranged, the structure is such that termites cannot invade the wooden structure further above.

Next, the configuration of the ant-proof foundation structure 100 of the present embodiment will be described in detail.
Solid foundation structure for wooden structures 30:
The present invention is a basic structure for preventing termites from feeding damage to wooden structures. Therefore, the anti-termite foundation structure 100 has a foundation structure of a wooden structure, and more specifically, a solid foundation structure 30 is provided as the foundation structure. The solid foundation structure 30 is a solid foundation structure generally known as a foundation structure of a wooden structure such as a wooden house, and includes a bottom plate portion 10 and a rising portion 20. Usually, the bottom plate portion 10 and the rising portion 20 are made of reinforced concrete, thereby supporting a wooden structure.
The bottom plate portion 10 is a thick plate-shaped pressure plate formed on at least one surface directly below the building in the solid foundation structure 30. On the other hand, the rising portion 20 is a vertical portion made of reinforced concrete extending upward and / or downward from the outer edge portion of the solid foundation structure 30 (bottom plate portion 10). As shown in FIG. 1, the rising portion 20 may extend upward from the outer edge of the bottom plate portion 10, but is not limited thereto. For example, in the case of a so-called inverted solid foundation structure, a vertical portion extending upward and / or downward from the outer edge of the bottom plate portion is included as a rising portion in the present invention. An example of an embodiment of the present invention using an inverted solid foundation will be described later as a second embodiment.

Bottom foam resin body 40:
The bottom foamed resin body 40 is embedded below the solid foundation structure 30 described above. As shown in FIG. 1, the bottom foamed resin body 40 faces the lower surface of the bottom plate portion 10. The bottom foamed resin body 40 may be in direct contact with the lower surface of the bottom plate portion 40, or between the bottom plate portion 10 and the bottom foamed resin body 40 within the range in which vibration from the wooden structure is propagated. Any structure may be provided and may be indirectly in contact with the lower surface of the bottom plate portion 10. FIG. 1 shows a mode in which a concrete plate 91 and a reinforcing portion 92 are provided as the above-mentioned arbitrary structure, and the bottom foamed resin body 40 and the lower surface of the bottom plate portion 10 are indirectly in contact with each other.
The concrete plate 91 is a concrete portion formed on the upper surface side of the bottom foamed resin body 40, thereby stabilizing the installation of the bottom foamed resin body 40. Further, the reinforcing portion 92 is a beam portion extending downward from the bottom plate portion 10 of the solid foundation structure 30, and by providing this, it is possible to lower the fulcrum of the shaking of the wooden structure (not shown), and in the event of an earthquake or the like. The shaking of wooden structures can be suppressed to a small extent. The concrete plate 91 and the reinforcing portion 92 may both be substantially composed of concrete alone, or one or both of them may be composed of reinforced concrete. In the present embodiment, the concrete plate 91 and the reinforcing portion 92 both illustrate an aspect in which the concrete plate 91 and the reinforcing portion 92 are substantially composed of only concrete.
As described above, in the present embodiment, the bottom plate portion 10 and the bottom foamed resin body 40 are in direct or indirect contact with each other without passing through the ground. Therefore, the living vibration and the ground vibration generated in the wooden structure (not shown) are propagated to the bottom foamed resin body 40 through the bottom plate portion 10 of the solid foundation structure 30, and the vibration is absorbed by the bottom foamed resin body 40. At the same time, it is presumed that the bottom foamed resin body 40 itself vibrates slightly, which prevents termites from approaching the solid foundation structure 30.

From the viewpoint of constructing a repellent environment in which termites do not approach the solid foundation structure 30 by arranging the bottom foamed resin body 40, the bottom foamed resin body 40 is positioned to directly or indirectly cover substantially the entire lower surface of the bottom plate portion 10. It is preferable to be arranged. As shown in FIG. 1, when there is a concavo-convex structure such as a reinforcing portion 92 below the bottom plate portion 10, the bottom foamed resin body 40a is arranged below the bottom plate portion 10 and below the arbitrary concavo-convex structure. It is preferable to arrange the bottom foamed resin body 40b in the bottom.

The thickness of the bottom foamed resin body 40 is not particularly limited and may be appropriately determined depending on the scale of the wooden structure, etc., but when applied to a wooden structure of about 2 to 3 stories, for example, termites From the viewpoint of repellent and good absorption of vibration, the thickness is preferably 5 cm or more, more preferably 10 cm or more, further preferably 20 cm or more, and particularly preferably 25 cm or more. .. From the viewpoint of balancing the anti-termite effect and the cost, the thickness is preferably 80 cm or less, more preferably 65 cm or less, further preferably 50 cm or less, and 45 cm or less. Is particularly preferred.

The lower surface of the bottom foamed resin body 40 may be in direct contact with the ground, but in the ant-proof foundation structure 100 of the present embodiment, a waterproof treatment layer 90 is provided on the lower surface of the bottom foamed resin body 40. .. The waterproofing layer 90 is a layer for improving drainage on the lower surface side of the solid foundation structure 30, and its configuration is not particularly limited. For example, as shown in FIG. 1, the civil engineering sheet 88 and the crushed stone are sequentially arranged from the lower side. An example is a laminated structure composed of a layer 87, a sand layer 86, and the like. In the present embodiment, the civil engineering sheet 88 is laid from below the solid foundation structure 30 to the vicinity of the ground surface (GL).

Side foamed resin body 50:
In the anti-termite basic structure 100, the side foamed resin body 50 is arranged along the lateral side surface of the rising portion 20. As shown in FIG. 2 (A), the upper end surface 110 of the side foamed resin body 50 is adjusted to a height substantially flush with the upper end surface 120 of the rising portion 20, or FIGS. 3 (A) to 3 (A). As shown in C), it is preferable that they are located close to each other. Although the term "neighborhood" here does not indicate a strict distance, it is preferable to adjust the height difference between the above-mentioned surfaces so as to be in a range of approximately 0 cm or more and 15 cm or less.

In the present embodiment, the side foamed resin body 50 is arranged from the lateral side surface of the bottom plate portion 10 to the outer lateral side surface of the rising portion 20, the lower end portion is embedded in the ground, and the upper end portion is on the ground. Exists in.
Further, in the present embodiment, as shown in FIG. 1, the side foamed resin body 50 is arranged in direct contact with the lateral side surface of the rising portion 20. As a result, the living vibration of the wooden structure (not shown) is satisfactorily propagated to the side foamed resin body 50 via the solid foundation structure 30. However, the present invention is not limited to this, and the side surface and the side foamed resin body of the rising portion 20 can propagate the vibration of the wooden structure (not shown) to the side foamed resin body 50 via the rising portion 20. Any member may be arranged between the 50 and the 50.

Further, in the present embodiment, the lower end of the side foamed resin body 50 is in contact with the upper surface of the bottom foamed resin body 40. Such a mode in which the lower end of the side foamed resin body 50 and the bottom foamed resin body 40 are in direct contact with each other is preferable in that a repellent environment for termites is formed without gaps. However, the present invention does not prohibit that there is a gap between the lower end of the side foamed resin body 50 and the bottom foamed resin body 40. This is because the termites that have invaded the solid foundation structure 30 side through the gap cannot further invade the inside due to the solid foundation structure 30. Further, any other member may be interposed between the lower end of the side foamed resin body 50 and the bottom foamed resin body 40.

It is preferable that the side foamed resin body 50 is arranged on substantially the entire surface with respect to the outer lateral side surface of the rising portion 20 at least on the ground. By laying the side foamed resin body 50 on the lateral side surface, a sufficient environment for repelling termites is constructed even on the ground, whereby the termites climb the outer surface of the termite-proof foundation structure 100 and become a wooden structure. It can be satisfactorily prevented from reaching.

The thickness of the side foamed resin body 50 is not particularly limited, but from the viewpoint of constructing a repellent environment against termites by the weak vibration of the side foamed resin body 50 itself, the thickness is preferably 2 cm or more. It is more preferably 5 cm or more, and from the viewpoint of balancing the termite-proof effect and cost, it is preferably 30 cm or less, more preferably 20 cm or less, and further preferably 15 cm or less. preferable.

The bottom foamed resin body 40 and the side foamed resin body 50 described above both include a foamed bead molded product. Here, the term "containing the foamed bead molded body" refers to an embodiment in which the bottom foamed resin body 40 and the side foamed resin body 50 are foamed resin bodies substantially consisting of only the foamed bead molded body and the foamed bead molded body, respectively. It means that it contains a composite resin formed by laminating bead molded products to be foamed. From the viewpoint of exerting a more excellent anti-termite effect, it is preferable that the bottom foamed resin body 40 and the side foamed resin body 50 are each foamed resin body substantially composed of only the foamed bead molded body.
The foamed bead molded product is obtained by filling a mold with foamable resin beads that have been appropriately pre-foamed, heating the resin beads with steam or the like in the mold to foam them, and fusing them to each other. It is a foam molded product formed in a desired shape along the inner surface of the mold. The foamed bead molded product has good vibration absorption performance while maintaining an appropriate strength.

The base resin constituting the foamed bead molded product is not particularly limited, and examples thereof include polystyrene-based resin, polypropylene-based resin, and polyethylene-based resin. These have appropriate flexibility and strength, and are excellent in vibration absorption. Generally, polystyrene-based resins, polypropylene-based resins, and polyethylene-based resins are said to be softer than polycarbonate-based resin foams and are more susceptible to termite feeding damage. However, in the present invention, the foamed bead molded body is used, and the bottom foamed resin body 40 is arranged below the solid foundation structure 30, so that an environment for repelling termites is constructed in the ground. It is possible to use a soft resin for termite prevention. Further, in general, polystyrene-based resins are superior to polycarbonate-based resins from the viewpoint of long-term creep characteristics. In the present invention, in particular, the bottom foamed resin body 40 is preferably made of a polystyrene-based resin whose shape is not easily deformed for a long period of time because a load of a wooden structure (not shown) is applied via the solid foundation structure 30. It can be said that.

Among the foamed resin bodies described above, a foamed resin body containing a polystyrene resin as the base resin is preferable from the viewpoint of good balance of vibration absorption, generation of weak shaking of the resin body itself, appropriate strength, etc., and has a mass of 80 mass. A foamed resin body in which% or more is made of a polystyrene-based resin is more preferable, and a foamed resin body in which substantially 100% by mass of the polystyrene-based resin is substantially preferable. The base resin referred to here refers to a resin contained in an amount of 50% by mass or more in the resin material contained in the foamed bead molded product.
The polystyrene-based resin includes a polystyrene resin or a copolymer of polystyrene such as a polystyrene-polyethylene copolymer and another resin.

The bottom foamed resin body 40 and the side foamed resin body 50 may have the same resin composition or different resin compositions, and one of the base resin of the bottom foamed resin body 40 and the side foamed resin body 50. The base resin of the above is preferably a polystyrene-based resin, more preferably the base resin of the bottom foamed resin body 40 and the side foamed resin body 50 is a polystyrene-based resin, and the bottom foamed resin body 40 and the side. It is more preferable that all of the partially foamed resin bodies 50 are substantially composed of a polystyrene-based resin.
It is most preferable that both the bottom foamed resin body 40 and the side foamed resin body 50 are composed of a foamed bead molded body in which the base resin is substantially 100% by mass of the polystyrene-based resin.
Regardless of the type of base resin, it is preferable that the bottom foamed resin body 40 and the side foamed resin body 50 are not biodegradable foamed resin bodies or cellulose-containing foamed resin bodies. In other words, as the foamed resin body used as the bottom foamed resin body 40 and the side foamed resin body 50, a foamed resin body that is substantially free of termite food components and plant and microbial nutrients is preferably selected. Will be done. This is because termites may be attracted to termites if they contain components that feed on them, and if they contain nutrients from plants or microorganisms, they may eventually cause the growth of mold and the like.

The bottom foamed resin body 40 and the side foamed resin body 50 can each be composed of one foamed resin body, but since the range of arrangement is wide, a plurality of foamed resin blocks are prepared, and these are combined to form the bottom foam. The resin body 40 and the side foamed resin body 50 may be formed.

In the ant-proof foundation structure 100 of the present embodiment, the bottom plate portion 10 and the ground are separated by a bottom foamed resin body 40 and a side foamed resin body 50. According to such an aspect, the environment for repelling termites in the ground can be made more sufficient, which is preferable.

Ant return member 60:
Next, the dovetail member 60 will be described. The dovetail member 60 is provided in the dovetail region 150 shown in FIG. The dovetail region 150 refers to an region near the upper end of the side foamed resin body 50 where the dovetail member 60 is arranged.
As shown in FIG. 2A, the dovetail member 60 is a member having a hard covering portion 62 that covers the upper end surface 110 of the side foamed resin body 50. The dovetail member 60 in the present embodiment is a flat plate member having an I-shaped cross section and is composed of only the covering portion 62.
By covering the upper end surface 110 of the side foamed resin body 50 with the covering portion 62, even if the termites break through the side foamed resin body 50 and reach the vicinity of the upper end surface 110, it can be seen. It is possible to prevent termites from moving upward and reaching a wooden member such as the base 82. From this point of view, it is preferable that the covering portion 62 covers substantially the entire upper end surface 110 of the side foamed resin body 50.

The dovetail member 60 is made of a hard member. Hard means that it is hard enough not to be eaten by termites, and examples of the hard member include, but are not limited to, a metal member and a hard resin member to be foamed.

In the present embodiment, as shown in FIG. 2A, the upper end surface 110 of the side foamed resin body 50 and the upper end surface 120 of the rising portion 20 are configured to be substantially flush with each other. The entire upper end surface 110 of the side foamed resin body 50 is covered, and a part thereof is arranged over a part of the upper end surface 120 of the rising portion 20. As a result, the installation posture of the ant return member 60 is stabilized, and it is possible to more sufficiently prevent the termites that have climbed through the side foamed resin body 50 from moving to the base 82 side.
In the present embodiment, the covering portion 62 is partially placed on the upper end surface 120 of the rising portion 20, and the base 82 is arranged in the other region. The present invention is not limited to this, for example, on the upper end surface 120 of the rising portion 20, the covering portion 62 is placed on an area area at least corresponding to the bottom surface of the base 82, and the base 82 is placed on the covering portion 62. Includes the mode of installation.

The outer side surface of the side foamed resin body 50 is not prohibited from being exposed to the outside air, but as shown in FIG. 2A, protection that covers the outer side surface and protects the side foamed resin body 50. It is preferable that the layer 80 is provided. The protective layer 80 can be made of a member such as mortar, but is not limited thereto. The protective layer 80 can be made of, for example, a member harder than the side foamed resin body 50.

In the present embodiment, the protective layer 80 is provided, and the upper end surface of the protective layer 80 is arranged so as to be substantially flush with the upper end surface 110 of the side foamed resin body 50, and the covering portion 62 is protected. It also covers the upper end surface of layer 80.
As confirmed from FIG. 2A, in the side view, the outer edge portion of the covering portion 62 is once placed on the upper end surface 120 of the rising portion 20, and the other outer edge portion is placed on the protective layer 80, so that the side portion It is preferable that the upper end surface 110 of the foamed resin body 50 is completely covered, and the covering portion 62 is more sufficiently installed by straddling the covering portion 62 on a member having a strength higher than that of the side foamed resin body 50. Can be stabilized.

Nothing may be arranged on the upper surface of the covering portion 62, or an arbitrary member 84 can be arranged as shown in FIG. 2 (A). Examples of the optional member 84 include, but are not limited to, a heat insulating material.

The dovetail member 60 is not limited to the above-described embodiment.
For example, as shown in FIGS. 2 (B), 3 (A), and (B), the dovetail member 60 is upward and / or downward from the outer edge portion of the covering portion 62 and the covering portion 62 on the building side (not shown). An extending wall portion 64 may be provided.
For example, as shown in FIGS. 2B and 3B, the dovetail member 60 may be configured to have an L-shaped cross section including a wall portion 64 extending upward from the outer edge portion of the covering portion 62. .. By providing the wall portion 64 and arranging it along the side surface of the base 82, termites are better prevented from invading the base 82 side.

Further, as another aspect of the dovetail member 60, as shown in FIG. 3A, a cross section including a covering portion 62 and a wall portion 64 extending upward and downward from the outer edge portion of the covering portion 62 on the building side (not shown). It may be configured in a T shape. Further, although not shown, the dovetail member 60 may be configured to have an inverted L-shaped cross section including a covering portion 62 and a wall portion 64 extending downward from the outer edge portion of the covering portion 62 on the building side (not shown). .. The L-shape and the inverted L-shape referred to here are those in which the wall portion 64 is installed in a direction in which the wall portion 64 extends upward in the posture when the dovetail member 60 is installed on the anti-termite foundation structure 100. It is called an L-shape, and the one installed in the direction in which the wall portion 64 extends downward is called an inverted L-shape.

When the dovetail member 60 provided with the wall portion 64 shown in FIGS. 2 (B), 3 (A), and (B) is used, the dovetail member 60 improves the adhesion with the surrounding constituent members. Therefore, it is preferable that the base 82 or the like is fixed to the base 82 or the like with a fastener 130 such as a bolt via the wall portion 64.

By the way, the covering portion 62 in the present embodiment is arranged in a state of being tightly sandwiched between the side foamed resin body 50 arranged on the lower surface side and the arbitrary member 84 arranged on the upper surface side. If rainwater or the like infiltrates from the interface of these structures, the humidity inside the anti-termite basic structure 100 may increase. Since termites prefer a high humidity environment, it is desirable to keep the humidity inside the foundation structure and around the foundation low from the viewpoint of termite prevention. Therefore, for example, as shown in FIG. 2B, it is preferable to provide a draining member 160 that inclines downward from the outer surface of the arbitrary member 84 located on the upper surface side of the covering portion 62 of the dovetail member 60. The draining member 160 is, for example, a plate-shaped body and is appropriately bent at a predetermined position. The draining member 160 is configured so that the height of the lower end is located below the height of the covering portion 62, whereby the outer end portion of the covering portion 62 is covered with the draining member 160, and rainwater or the like is directly applied. By making it difficult to touch the outer end portion, it is possible to prevent rainwater from entering.
In FIG. 2B, the draining member 160 is attached by sandwiching the upper end thereof between the head of the fastener 130, which is a bottle, and the optional member 84, but the installation mode of the draining member 160 is limited to this. Not done.

Water permeable member 70:
Termites prefer a moderately humid environment. Therefore, in order to more appropriately construct a termite repellent environment and prevent termites from forming nests around the solid foundation structure 30, it is preferable to keep the humidity of the ground in the vicinity of the solid foundation structure 30 low.
From this point of view, in the present embodiment, the water permeable member 70 is arranged along the side surface of the bottom foamed resin body 40 and / or the side foamed resin body 50 in the ground. FIG. 1 shows an example in which the water permeable member 70 is arranged on the side surface of the bottom foamed resin body 40a, the side surface of the side foamed resin body 50 in the region embedded in the ground, and the side surface and the upper surface of the bottom foamed resin body 40b.

The water-permeable member 70 is composed of a foamed resin body, and includes a water-permeable foamed resin body 72 having a space for water to enter on the side surface or inside.
The water permeable member will be further described with reference to FIG. FIG. 4A is a perspective view showing an example of the water permeable member 70 including the water permeable foam resin body 72, and FIG. 4B is a perspective view showing a different aspect of the water permeable foam resin body 72 used for the water permeable member 70. It is a figure.

The water permeable member 70 shown in FIG. 4A is composed of a water permeable foamed resin body 72 and a sheet-like material 140 covering the foamed resin body 72.
The water-permeable foamed resin body 72 is provided with a plurality of groove portions 142 extending on the surface and holes 144 penetrating in the wall thickness direction, and allows water in the ground to enter these spaces. By providing a space for water in the ground to infiltrate in this way, when the water concentration in the ground temporarily rises, the groove 142 of the water-permeable foamed resin body 72 moves to the hole 144. This can be adjusted so that the humidity of the ground does not become too high. Further, by providing the groove portion 142 extending in the vertical direction, it is possible to promote the downward flow of water in the ground through the groove portion 142 as a flow path.

The water-permeable foamed resin body 72 is covered with a sheet-like material 140 so that the groove portion 142 and the hole portion 144 provided therein are not filled with the surrounding ground. As the sheet constituting the sheet-like material 140, a non-woven fabric, a mesh sheet, or the like which is water-permeable and has an opening to the extent that the earth and sand in the ground does not penetrate is appropriately used.

The water-permeable foamed resin body 72 is not limited to the mode shown in FIG. 4A, as long as a space for water in the ground to enter is formed on the surface or inside. For example, as shown in FIG. 4B, there are through holes 146 on one side surface and the other side surface, and through holes penetrating the inside of the water-permeable foamed resin body 72 from one opening 146 to the other opening 146. 148 may be formed.

As for the foamed resin and the foamed resin body constituting the water-permeable foamed resin body 72 provided on the water-permeable member 70, the description of the foamed resin and the foamed resin body used for the bottom foamed resin body 40 and the side foamed resin body 50 described above is appropriate. Since it is referred to, a detailed explanation is omitted here.

<Second embodiment>
Hereinafter, the second embodiment of the present invention will be described with reference to FIG.
FIG. 5 is a schematic cross-sectional view of an anti-termite foundation structure 200 in which an inverted solid foundation is used as the solid foundation structure 30. With respect to the present invention, the inverted solid foundation broadly includes those generally recognized as an inverted solid foundation in the field of civil engineering. For example, the bottom plate portion 10 constituting the foundation can also function as a floor slab (slab). Includes foundation structure. Further, the inverted solid foundation is generally provided with an underground beam 93 made of reinforced concrete. In the present embodiment, the solid foundation structure 30, which is an inverted solid foundation, is provided with a plurality of underground beams 93 made of reinforced concrete from the lower surface of the bottom plate portion 10 downward, and is provided in the vertical direction from the outer edge of the bottom plate portion 10. A rising portion 20 extending is provided. In FIG. 5, the rising portion 20 extends vertically upward from the outer edge of the bottom plate portion 10, but in a different inverted solid foundation mode, which is not shown, the bottom plate portion 10 is formed at a position higher than the ground surface, and the bottom plate portion 20 is formed. It may be a rising portion 20 formed downward from the outer edge of the 10.

In general, soil filled with residual soil generated when excavating the ground is often placed between the underground beams 93 of the inverted solid foundation. Therefore, the humidity increases below the bottom plate portion 10, and the environment is such that termite nests are likely to be formed. However, in the present invention, the bottom foamed resin body 40 is arranged below the bottom plate portion 10 of the solid foundation structure 30, which is an inverted solid foundation, instead of the soil described above. Therefore, the ants are prevented from accumulating under the reverse solid foundation as in the conventional case.

Further, in the present embodiment, the bottom foamed resin body 40 is arranged along the side surface and the bottom surface of the underground beam 93. As described above, in the present embodiment provided with the inverted solid foundation as the solid foundation structure 30, it is preferable that the bottom foamed resin body 40 is appropriately continuously arranged directly or indirectly on the side surface and the bottom surface of the underground beam 93. As a result, the underground beam 93 is isolated from the ground, and white ants are prevented from approaching the periphery of the underground beam 93.
In the ant-proof foundation structure 200, the ant-returning member 60 and the water-permeable member 70 are the same as those in the first embodiment, and therefore detailed description thereof will be omitted here.

As described above, the conventional reverse solid foundation is required to have further improvement in anti-termite foundation as compared with the non-reverse solid foundation. However, in the case of the anti-termite foundation structure 200 of the present embodiment, even if the reverse solid foundation is adopted. , Can satisfactorily prevent ants.

The above embodiment includes the following technical ideas.
(1) A solid foundation structure for a wooden structure having a bottom plate portion and a rising portion extending in the vertical direction from the outer edge portion of the bottom plate portion.
The bottom foamed resin body for anti-termite embedded under the solid foundation structure,
It has a side foamed resin body for ant prevention arranged along the lateral side surface of the rising portion, and has.
Both the bottom foamed resin body and the side foamed resin body for anti-termite include a foamed bead molded body.
A basic structure for anti-termite, characterized in that a dovetail member having a hard covering portion covering the upper end surface of the side foamed resin body is provided.
(2) The ant-proof basic structure according to (1) above, wherein the ant-returning member has a wall portion extending upward and / or downward from an outer edge portion of the covering portion on the building side.
(3) The upper end surface of the side foamed resin body and the upper end surface of the rising portion are arranged substantially flush with each other.
The ant-proof basic structure according to (1) or (2) above, wherein the covering portion is arranged over the upper end surface of the side foamed resin body and at least a part of the upper end surface of the rising portion.
(4) The anti-termite basic structure according to any one of (1) to (3) above, wherein the base resin of the foamed bead molded product is a polystyrene-based resin.
(5) In the ground
The ant-proof basic structure according to any one of (1) to (4) above, wherein a water permeable member is arranged along the side surface of the bottom foamed resin body and / or the side foamed resin body.
(6) A protective layer is provided on the outer surface of the side foamed resin body.
The upper end surface of the protective layer is arranged substantially flush with the upper end surface of the side foamed resin body.
The basic structure for ant-proof according to any one of (1) to (5) above, wherein the covering portion covers the upper end surface of the protective layer.
(7) The anti-termite according to any one of (1) to (6) above, wherein the bottom plate portion and the ground are separated by the bottom foamed resin body for anti-termite and the side foamed resin body. For basic structure.

10 ... Bottom plate part 20 ... Rising part 30 ... Solid foundation structure 40, 40a, 40b ... Bottom foamed resin body for anti-termite 50 ... Side foamed resin body 60 for anti-termite ····························································································································································.・ ・ ・ Sand layer 87 ・ ・ ・ Crushed stone layer 88 ・ ・ ・ Civil engineering sheet 90 ・ ・ ・ Waterproofing layer 91 ・ ・ ・ Concrete plate 92 ・ ・ ・ Reinforcing part 93 ・ ・ ・ Underground beam 100, 200 ・ ・ ・ Anti-termite Basic structure 110 ・ ・ ・ Upper end surface of side foamed resin body 120 ・ ・ ・ Upper end surface of rising part 130 ・ ・ ・ Fastener 140 ・ ・ ・ Sheet-like material 142 ・ ・ ・ Groove part 144 ・ ・ ・ Hole part 146 ・・ ・ Opening hole 148 ・ ・ ・ Through hole 150 ・ ・ ・ Dovetail area 160 ・ ・ ・ Draining member

Claims (7)

A solid foundation structure for a wooden structure having a bottom plate portion and a rising portion extending in the vertical direction from the outer edge portion of the bottom plate portion.
The bottom foamed resin body for anti-termite embedded under the solid foundation structure,
It has a side foamed resin body for ant prevention arranged along the lateral side surface of the rising portion, and has.
Both the bottom foamed resin body and the side foamed resin body for anti-termite include a foamed bead molded body.
A basic structure for anti-termite, characterized in that a dovetail member having a hard covering portion covering the upper end surface of the side foamed resin body is provided. The ant-proof foundation structure according to claim 1, wherein the ant-returning member has a wall portion extending upward and / or downward from an outer edge portion of the covering portion on the building side. The upper end surface of the side foamed resin body and the upper end surface of the rising portion are arranged substantially flush with each other.
The anti-termite basic structure according to claim 1 or 2, wherein the covering portion is arranged over an upper end surface of the side foamed resin body and at least a part of an upper end surface of the rising portion. The basic structure for anti-termite according to any one of claims 1 to 3, wherein the base resin of the foamed bead molded product is a polystyrene-based resin. In the ground
The ant-proof basic structure according to any one of claims 1 to 4, wherein a water permeable member is arranged along the side surface of the bottom foamed resin body and / or the side foamed resin body. A protective layer is provided on the outer surface of the side foamed resin body.
The upper end surface of the protective layer is arranged substantially flush with the upper end surface of the side foamed resin body.
The basic structure for ant-proof according to any one of claims 1 to 5, wherein the covering portion covers the upper end surface of the protective layer. The basic structure for ant-proofing according to any one of claims 1 to 6, wherein the bottom plate portion and the ground are separated by the bottom foamed resin body for ant-proofing and the side foaming resin body.

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