Water-proof structure

Abstract

To realize a new water-proof structure that can prevent water from entering the interior of a building from the bottom end of an insulating panel.SOLUTION: In a water-proof structure (10), an insulating panel (40) protrudes further toward the exterior of the building than a foundation (1), and a sealing material (11) is provided in a space (S) between a lower end (40a) of the insulating panel (40) and at least one of the foundation (1) and a base (2).SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a water ingress prevention structure. [Background technology]

[0002] In recent years, the effects of global warming have led to an increase in the number and size of typhoons, and the scale of damage caused by heavy rain and strong winds has also shown a tendency to become more severe and increase. In some cases, concentrated heavy rain has led to the collapse of levees, causing flooding in urban areas. In order to prevent such damage from flooding, flood-proof structures for buildings have been developed.

[0003] For example, the water ingress prevention structure disclosed in Patent Document 1 includes a plurality of insulating facing materials arranged on the outdoor side of a plurality of columns or between the columns, a plurality of waterproof sheets, an outdoor elastic adhesive sealant, and a base water drain. The waterproof sheets are attached to the outdoor surface of the insulating facing material. The outdoor elastic adhesive sealant is applied to the outdoor side of the joint between adjacent waterproof sheets and to the area on the lower edge side of the waterproof sheets, and the lower area is also applied to the top edge of the foundation. The base water drain covers the lower area of ​​the outdoor elastic adhesive sealant on the top edge of the foundation. With the above configuration, the water ingress prevention structure disclosed in Patent Document 1 suppresses water ingress from the lower end side of the insulating facing material such as the exterior wall insulation material against flooding around the building due to inland water flooding or the like. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2023-41143 A Summary of the Invention [Problem to be solved by the invention]

[0005] In general, in a building's exterior wall insulation structure, the lower end of the insulation face material is disposed protruding from the foundation toward the exterior side of the building, so that there is no foundation on the lower end side of the insulation face material. On the other hand, the insulation structure of the building disclosed in Patent Document 1 has a foundation on the lower end side of the insulation face material, which is different from the insulation structure of the general building described above. Therefore, the water ingress prevention structure of Patent Document 1 cannot be applied to the insulation structure of a general building.

[0006] For this reason, in contrast to the above-mentioned typical building insulation structures, there is a demand for a new water-proof structure and a method for manufacturing a water-proof structure that can prevent water from entering the interior of a building from the lower end side of the insulation panel.

[0007] Therefore, one aspect of the present invention aims to realize a new water-proof structure and a manufacturing method for a water-proof structure that can prevent water from entering the interior of a building from the lower end side of an insulating panel. [Means for solving the problem]

[0008] In order to solve the above problems, one aspect of the present invention is as follows.

[0009] [1] A water-resistant structure comprising a foundation for a building, a base fixed onto the foundation, frame members fixed onto the base and constituting the walls of the building, and an insulating panel arranged on the outdoor side of the frame members, wherein the insulating panel protrudes further toward the outdoor side of the building than the foundation, and a sealant is provided in the space between the lower end of the insulating panel and at least one of the foundation and the base.

[0010] [2] The water-proof structure of [1], wherein the sealant is a dried coating of a sealing resin composition or an airtight tape.

[0011] [3] A water-proof structure as defined in [1] or [2], provided with an airtight member that provides airtightness between the foundation and the base.

[0012] [4] A water-proof structure according to any one of [1] to [3], wherein the sealing material is provided so as to cover the boundary portion between the foundation and the base.

[0013] [5] A water-proof structure according to any one of [1] to [4], wherein, in the vertical direction, the lower end of the insulating panel is positioned at approximately the same position as the boundary between the foundation and the base, and the sealant is arranged so as to be in contact with both the lower end of the insulating panel and the outdoor side of the foundation.

[0014] [6] A method for manufacturing a water-proof structure for an insulating structure comprising a foundation of a building, a base fixed on the foundation, frame members fixed on the base and constituting the walls of the building, and an insulating panel arranged on the outdoor side of the frame members, the insulating panel being arranged protruding further toward the outdoor side of the building than the foundation, the method including a sealing step of providing a sealant in the space between the lower end of the insulating panel and at least one of the foundation and the base. Effect of the Invention

[0015] According to one aspect of the present invention, it is possible to prevent water from entering the interior of a building from the lower end side of the insulating panel. [Brief description of the drawings]

[0016] [Figure 1] 1 is a perspective view showing a schematic configuration of a water inundation prevention structure for a building according to a first embodiment of the present invention. [Diagram 2] 1 is a cross-sectional view showing a schematic configuration of a water inundation prevention structure for a building according to a first embodiment of the present invention. [Diagram 3] FIG. 6 is a cross-sectional view showing a schematic configuration of a water inundation prevention structure for a building according to a second embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] The embodiments of the present invention will be described below, but the present invention is not limited thereto. The present invention is not limited to each of the configurations described below, and various modifications are possible within the scope of the claims. In addition, embodiments obtained by combining the technical means disclosed in different embodiments are also included in the technical scope of the present invention. Furthermore, new technical features can be formed by combining the technical means disclosed in each embodiment. All academic documents and patent documents described in this specification are adopted as references in this specification. Furthermore, unless otherwise specified in this specification, "A to B" representing a numerical range means "A or more (including A and larger than A) and B or less (including B and smaller than B)". Furthermore, each drawing is shown for easy understanding when referred to in conjunction with the following description, and is not necessarily drawn to a certain scale.

[0018] [Embodiment 1] (Flood prevention structure 10) Fig. 1 is a perspective view showing a schematic configuration of a water ingress prevention structure 10 for a building according to the present embodiment. Fig. 2 is a cross-sectional view showing a schematic configuration of the water ingress prevention structure 10 according to the present embodiment. Fig. 2 is a cross-sectional view taken along line II in Fig. 1.

[0019] As shown in Figures 1 and 2, the water-proof structure 10 comprises a building foundation 1, a base 2, a plurality of pillars 3 and studs 3A, a plurality of insulating surface materials 40, a structural surface material 5, an airtight tape 60, a moisture-permeable waterproof sheet 7, furring strips 8, an airtight gasket 9 (airtight member), and a sealing material 11.

[0020] The base 2 is made of wood fixed on the foundation 1. The pillars 3 and studs 3A are framework members that constitute the walls of the building, and are fixed on the base 2. The pillars 3 and studs 3A are fixed on the base 2 at a predetermined interval. The structural surface material 5 is fixed to the exterior side of the pillars 3 and studs 3A by fastening members such as nails and screws. The structural surface material 5 is provided between the pillars 3 and studs 3A. The structural surface material 5 allows the wall structure of the building to be a surface material load-bearing wall. Note that the wall structure to which the water ingress prevention structure 10 can be applied is not limited to a surface material load-bearing wall provided with the structural surface material 5. For example, the water ingress prevention structure 10 can also be applied to a load-bearing wall in which a brace is provided between the pillars 3 and studs 3A.

[0021] The airtight packing 9 is a member that provides airtightness between the foundation 1 and the foundation 2. As shown in FIG. 2, the airtight packing 9 is interposed between the foundation 1 and the foundation 2. The airtight packing 9 prevents outside air from entering the building through the boundary part B between the foundation 1 and the foundation 2. The airtight packing 9 can also prevent water from entering the building through the boundary part B. As the airtight packing 9, a conventionally known one can be used. The airtight member is not limited to the airtight packing 9 as long as it can provide airtightness between the foundation 1 and the foundation 2. In this way, the water infiltration prevention structure 10 is preferably applied to a foundation insulation structure, particularly an intra-foundation insulation structure, rather than a floor insulation structure, since the airtight packing 9 provides airtightness between the foundation 1 and the foundation 2.

[0022] The insulating face material 40 is disposed on the outdoor side of the structural face material 5. The insulating face material 40 is disposed on the outdoor side of the columns 3 and studs 3A. The structural face material 5 is interposed between the columns 3 and studs 3A and the insulating face material 40. Here, "the insulating face material 40 is disposed" means that the insulating face material 40 is allocated to the area outside the columns 3 and studs 3A on the outdoor side of the columns 3 and studs 3A. It does not matter whether the insulating face material 40 is in contact with the outdoor side of the columns 3 and studs 3A. Therefore, in other words, it can be said that the insulating face material 40 is disposed on the outside of the columns 3 and studs 3A, between the columns 3 and studs 3A, in a state of contacting or not contacting the outdoor side of the columns 3 and studs 3A. For example, when the water ingress prevention structure 10 is applied to a load-bearing wall in which diagonal braces are arranged between the pillars 3 and studs 3A, the insulating panel 40 is positioned on the outside of the pillars 3 and studs 3A, spanning between the pillars 3 and studs 3A, in contact with the outdoor side of the pillars 3 and studs 3A.

[0023] The heat insulating surface material 40 includes a receiving material 41 and a heat insulating material 42. The receiving material 41 is a long rod-shaped member, and is made of, for example, wood. The receiving material 41 is fixed to the outside of the base 2 with fastening members such as nails and screws. The heat insulating material 42 is arranged on the receiving material 41. In the configuration shown in FIG. 1 and FIG. 2, the heat insulating materials 42 are stacked in the vertical direction. From the viewpoint of moisture resistance, workability, and the like, the heat insulating material 42 is preferably, for example, a plate-shaped thermoplastic foamed resin. Examples of the thermoplastic foamed resin constituting the heat insulating material 42 include polystyrene-based foamed resin and polyethylene-based foamed resin. In addition, there is no particular restriction on the manufacturing method of the heat insulating material 42, and examples thereof include an extrusion foaming method and a foaming method in a mold. Note that the heat insulating surface material 40 may be configured without including the receiving material 41.

[0024] The moisture-permeable waterproof sheet 7 is applied to the outdoor surface of the heat-insulating facing material 40. The airtight tape 60 includes a first airtight tape 61 attached to the joints between the heat-insulating materials 42, and a second airtight tape 62 attached to the joints between the receiving material 41 and the heat-insulating material 42. By providing the airtight tape 60 in this manner, it is possible to prevent water from entering the room from between the heat-insulating facing material 40 and the moisture-permeable waterproof sheet 7. In addition, the first airtight tape 61 can prevent water from entering the room from the joints between the heat-insulating materials 42. Furthermore, the second airtight tape 62 can prevent water from entering the room from the joints between the receiving material 41 and the heat-insulating material 42. Note that the first airtight tape 61 and the second airtight tape 62 may have a size sufficient to prevent water from entering the room as described above, but are preferably wide, about 100 mm in width. In addition, the airtight tape may be attached to the joints of the moisture-permeable waterproof sheet 7. There is no problem if the moisture-permeable waterproof sheet 7 is not applied.

[0025] The furring strips 8 are disposed on the outdoor side of the moisture-permeable waterproof sheet 7. Each furring strip 8 is fixed to the support 41 and the base 2 by a furring strip fastening material 8a, and to the pillar 3 and the stud 3A by a furring strip fastening material 8b. The furring strip fastening material 8a penetrates the moisture-permeable waterproof sheet 7, the second airtight tape 62, and the support 41 to reach the base 2. The furring strip fastening material 8b penetrates the moisture-permeable waterproof sheet 7 and the heat-insulating material 42 to reach the pillar 3 and the stud 3A. In the vertical direction, the lower end of the furring strip 8 is located at approximately the same position as the lower end of the heat-insulating face material 40 (the lower end of the support 41). When the moisture-permeable waterproof sheet is not installed, the furring strips 8 are fixed to the pillar 3 and the stud 3A without the moisture-permeable waterproof sheet 7 interposed therebetween.

[0026] Here, in the water-ingress prevention structure 10 according to this embodiment, the insulating face material 40 protrudes further toward the outdoor side of the building than the foundation 1. As shown in FIG. 2, the outdoor side of the insulating face material 40 is located further outdoors than the outdoor side surface 1a of the foundation 1. Therefore, in the water-ingress prevention structure 10, a space S is formed between the lower end portion 40a of the insulating face material 40 and the outdoor side surface 1a of the foundation 1. In the water-ingress prevention structure 10, the sealing material 11 is provided in the space S between the lower end portion 40a of the insulating face material 40 and the foundation 1.

[0027] As shown in Fig. 2, the lower end 40a of the insulating face material 40 is disposed at approximately the same position as the boundary portion B between the foundation 1 and the base 2 in the vertical direction. The sealant 11 is provided so as to be in contact with both the lower end 40a of the insulating face material 40 and the outdoor side surface 1a of the foundation 1. The sealant 11 is in contact with the outdoor side surface 1a of the foundation 1 and the lower end 40a of the insulating face material 40. Furthermore, the sealant 11 is provided so as to fill in the corner formed by the outdoor side surface 1a of the foundation 1, a part of the lower end of the structural face material 5, and the lower end 40a of the insulating face material 40.

[0028] In this way, the sealing material 11 is provided in the space S between the lower end 40a of the heat insulating surface material 40 and the foundation 1, thereby preventing water from entering the building from the lower end 40a side of the heat insulating surface material 40. The sealing material 11 is intended to be a material specified in JIS A 5758 as "a material that is filled in the joints and gaps of a structure to provide functions such as waterproofing and airtightness." Furthermore, the sealing material 11 also includes so-called "caulking materials" in the category of this embodiment. The caulking material is, for example, an oil-based caulking agent specified in JIS A 5751 (now abolished), "a paste-like sealing material manufactured by mixing a vehicle (natural resin, synthetic resin, alkyd resin, etc.) and a mineral filler (calcium carbonate, etc.)." Examples of the sealing material 11 used in the water-proof structure 10 include a coated and dried product of a sealing resin composition such as a silicone resin, a silylated acrylate resin, a modified silicone resin, a polysulfide resin, a polyurethane resin, or an acrylic resin.

[0029] Furthermore, the sealant 11 is not limited to the form of the coated and dried product of the sealing resin composition described above, and may be in any form that allows it to be provided in the space S. For example, the sealant 11 may be in the form of an airtight tape.

[0030] In addition, in the water ingress prevention structure 10, the height position of the lower end 40a of the heat insulating face material 40 from the ground level is not particularly limited as long as the sealing material 11 can prevent water ingress. The lower end 40a is preferably located at a height of 1.5 m or less from the ground level, and more preferably at a height of 1.0 m or less from the ground level. In general, when a building is inundated with water and the water depth exceeds 1.5 m from the ground level, the building floats. Therefore, in order to prevent the building from floating when inundated, the lower end 40a is preferably located at a height of 1.5 m or less from the ground level. The inventors of the present application have confirmed that the water ingress prevention structure 10 prevents water from inundating the building for 24 hours when the water depth is 1.0 m from the ground level.

[0031] In the water ingress prevention structure 10 shown in Figs. 1 and 2, the sealant 11 is provided in the space S between the lower end 40a of the heat insulating face material 40 and the foundation 1. However, the water ingress prevention structure according to this embodiment is not limited to the configuration shown in Figs. 1 and 2. Explained with reference to Figs. 1 and 2, in the water ingress prevention structure according to this embodiment, the sealant 11 may be provided in the space S between the lower end 40a of the heat insulating face material 40 and at least one of the foundation 1 and the base 2. That is, the space S in which the sealant 11 is provided is (1) the space between the lower end 40a and the base 1, (2) the space between the lower end 40a and the base 2, or (3) the space between the lower end 40a and the foundation 1 and the base 2. In which of the spaces (1) to (3) the sealant 11 is provided can be appropriately set according to the positional relationship between the lower end 40a of the heat insulating face material 40 and the foundation 1 and the base 2 in the wall structure to which the water ingress prevention structure is applied. When the space S in which the sealant 11 is provided is the space of (2) or (3), a structural surface material 5 may be disposed in addition to the sealant 11 in the space. In this case, the sealant 11 (a) contacts the lower end portion 40a and the structural surface material 5 and fills in the corners between the lower end portion 40a and the structural surface material 5, or (b) contacts the lower end portion 40a and the foundation 1 and the structural surface material 5 and fills in the corners between the lower end portion 40a and the structural surface material 5.

[0032] Furthermore, when the flood prevention structure 10 is applied to a house, it is possible to prevent damage caused by flooding and provide a safe house. Such an effect also contributes to the achievement of, for example, Goal 11 of the Sustainable Development Goals (SDGs) advocated by the United Nations, "Make cities and human settlements inclusive, safe, resilient and sustainable."

[0033] Furthermore, the water intrusion prevention structure 10 according to this embodiment may be provided with a drain. In this case, it is preferable that the drain is provided so as to cover the sealing material 11. As a result, the sealing material 11 is covered by the base drain, so that the sealing material 11 is less susceptible to the effects of ultraviolet rays from the sun and is less likely to deteriorate.

[0034] (Method of manufacturing water ingress prevention structure 10) The manufacturing method of the water-ingress prevention structure 10 according to the present embodiment is a method for manufacturing the structure shown in Fig. 1 and Fig. 2. More specifically, the manufacturing method is a method for manufacturing a water-ingress prevention structure for an insulating structure including a foundation 1 of a building, a base 2 fixed on the foundation 1, a plurality of columns 3 and studs 3A fixed on the base 2, and a plurality of insulating face materials 40 arranged on the outdoor side of the plurality of columns 3 and studs 3A, the insulating face material 40 being arranged protruding from the foundation 1 toward the outdoor side of the building. The manufacturing method includes a sealing step of providing a sealant 11 in a space S between a lower end portion 40a of the insulating face material 40 and at least one of the foundation 1 and the base 2. The manufacturing method of the water-ingress prevention structure 10 can be said to be a construction method of the water-ingress prevention structure 10.

[0035] Thus, according to the manufacturing method of this embodiment, in the sealing process, water can be prevented from entering the interior of the building in a simpler manner by providing sealing material 11 in the space between the lower end 40a of the insulating panel 40 and at least one of the foundation 1 and the base 2.

[0036] In the sealing step, the method of providing the sealant 11 can be a conventionally known method. For example, when the sealant 11 is made of a coating and drying product of a sealing resin composition, the method of providing the sealant 11 can be a method of applying the sealing resin composition to the lower end 40a and at least one of the foundation 1 and the base 2 using a spatula or the like, and drying the applied sealing resin composition. When an airtight tape is used as the sealant 11, the method of attaching the airtight tape to the lower end 40a and at least one of the foundation 1 and the base 2, and then using a conventionally known pressing tool to make the airtight tape adhere to the lower end 40a and at least one of the foundation 1 and the base 2 can be exemplified.

[0037] (Regarding the wall structure of buildings to which the flood prevention structure 10 can be applied) The water-ingress prevention structure 10 shown in Figures 1 and 2 has been applied to a wall structure having pillars 3 and studs 3A as frame members. That is, the water-ingress prevention structure 10 has been applied to a wall structure constructed using a wooden framework construction method. However, the wall structure to which the water-ingress prevention structure 10 can be applied is not limited to a wall structure constructed using a wooden framework construction method, and any conventionally known wall structure can be used, as long as it can realize an insulating structure in which the insulating face material 40 protrudes beyond the foundation 1 toward the outdoors. That is, the frame members that make up the wall structure are not limited to the pillars 3 and studs 3A, and any conventionally known members can be used.

[0038] For example, the water ingress prevention structure 10 can also be applied to a wall structure using the frame wall construction method (two-by-four construction method). The frame wall construction method is a construction method in which walls and floor slabs are constructed by nailing structural panels or similar materials to a wooden framework. When the water ingress prevention structure 10 is applied to a wall structure using the frame wall construction method, the framework members are the frame members that make up the framework. The framework may be composed of joists and vertical frames, or may be composed of joists and a sill frame and vertical frames that are separate members. The structural panel 5 is then installed on the outdoor side of such a framework.

[0039] [Embodiment 2] Other embodiments of the present invention will be described below. For ease of explanation, the same reference numerals are given to members having the same functions as those described in the above embodiment, and the description thereof will not be repeated.

[0040] 3 is a cross-sectional view showing a schematic configuration of a water ingress prevention structure 10A according to this embodiment. As shown in FIG 3, the water ingress prevention structure 10A according to this embodiment differs from the first embodiment in the arrangement of the sealing material 11.

[0041] In the water-ingress prevention structure 10A, the lower end 40a of the insulating face material 40 is disposed above the boundary portion B between the foundation 1 and the base 2 in the vertical direction. The sealant 11 is provided so as to contact the lower end 40a of the insulating face material 40, the structural face material 5, and the outdoor-facing side surface 1a of the foundation 1. The sealant 11 is also provided so as to fill in the corner between the lower end 40a and the structural face material 5. This makes it possible to prevent water from infiltrating into the building from the lower end 40a side of the insulating face material 40.

[0042] The sealing material 11 is provided so as to cover the boundary portion B between the foundation 1 and the base 2. Therefore, the boundary portion B is sealed from the outside by the sealing material 11. This makes it possible to prevent water from entering the building through the boundary portion B between the foundation 1 and the base 2. Furthermore, as shown in FIG. 3, the boundary portion B is made airtight by the airtight packing 9, so the airtight packing 9 and the sealing material 11 can further prevent water from entering the building through the boundary portion B between the foundation 1 and the base 2.

[0043] The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims. Embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of the present invention. [Explanation of symbols]

[0044] 1 Basics 1a side 2. Foundation 3 Columns (frame members) 3A Studs (framework members) 5 Structural facing material 7. Breathable waterproof sheet 8. Fuselage 9 Airtight packing 10, 10A flood prevention structure 11 Sealing materials 40 Insulating Surface Materials 40a Bottom end 41 Support material 42 Insulation 60 Airtight Tape 61 No. 1 Airtight Tape 62 Second Airtight Tape

Claims

1. The foundations of the building, A base fixed on the foundation; A frame member fixed on the foundation and constituting a wall of a building; a heat insulating surface material disposed on the outdoor side of the frame member, The heat insulating surface material protrudes to the exterior side of the building beyond the foundation, A water-proof structure in which a sealing material is provided in the space between the lower end of the insulating panel and at least one of the foundation and the base.

2. The water ingress prevention structure according to claim 1 , wherein the sealant is a dried coating of a sealing resin composition or an airtight tape.

3. The water ingress prevention structure according to claim 1 or 2, further comprising an airtight member for providing an airtight seal between the foundation and the base.

4. The water ingress prevention structure according to claim 1 or 2, wherein the sealant is provided so as to cover a boundary portion between the foundation and the base.

5. In the vertical direction, the lower end of the heat insulating panel is disposed at approximately the same position as the boundary portion between the foundation and the base, 3. The water ingress prevention structure according to claim 1, wherein the sealant is provided so as to be in contact with both a lower end of the insulating panel and the outdoor side of the foundation.

6. The foundations of the building, A base fixed on the foundation; A frame member fixed on the foundation and constituting a wall of a building; a heat-insulating face material disposed on an outdoor side of the frame member, the heat-insulating face material being disposed protruding from the foundation toward the outdoor side of the building; A method for manufacturing a water-proof structure, comprising a sealing step of providing a sealant in the space between the lower end of the insulating panel and at least one of the foundation and the base.

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