JP4567529B2 - Seismic reinforcement heat insulation repair method - Google Patents

Description

  The present invention relates to a seismic reinforcement heat insulation renovation method for improving the earthquake resistance and heat insulation of a house, and in particular, for a house having a relatively long construction age such as a second-hand house, the earthquake resistance is easily improved and the heat insulation and air tightness are improved. The present invention relates to a seismic reinforcement heat insulation repair method that can be used.

  Traditionally, buildings where the space between the interior and exterior materials of a wooden house has been filled with heat insulating materials such as glass wool and resin foam improve indoor heat insulation performance and provide a comfortable living space. It is widely adopted because it can reduce the energy cost.

  Although there are already many houses filled with heat insulating material, the proper heat insulating performance is often not exhibited. In order to improve the heat insulation of these wooden houses, there is a method to peel off the inner wall when filling the existing house with heat insulation material, but this method requires a major renovation and also removes the interior material. In some cases, renovation is not desired. In that case, for example, a method is used in which a heat insulating material is dropped from the ceiling to the wall between the interior material and the exterior material.

  However, when filling the heat insulating material by the above method, the heat insulating material meanders and is caught in the middle of the wall and cannot be filled efficiently, or the space between the pillars and the space between the interior material and the exterior material In some cases, it is difficult to fill without any gap in the vertical and horizontal directions, and as a result, sufficient heat insulation performance is not obtained.

  In response to the above problem, for example, in Patent Document 1, a synthetic resin sheet is suspended in a wall from an opening such as between an eaves girder and a ceiling plate, and a guide surface is formed along each facing surface of the interior and exterior materials. After the plastic resin bag body is filled with glass wool and the bag body is depressurized with the heat insulating material suspended from the guide surface, the bag body is opened to the atmosphere so that there is no gap in the wall body. It is described that the insulation is filled.

  In addition, even when the wall of the second-hand house to be renovated is already filled with a heat insulating material, for example, there is a gap between the heat insulating material and the interior material such as gypsum board, and this gap If there is a gap that leads to the floor or ceiling, it will be in a state of continuous ventilation (communication state) between the floor and the wall, the back of the ceiling and the wall, etc., and sufficient heat insulation performance cannot be obtained due to so-called leakage Had a problem.

In order to prevent the above-mentioned air leakage, for example, Patent Document 2 discloses that one of the ears along the short side direction of the fibrous heat insulating material is connected to the floor base material from the indoor side of the wall in the lowest floor. After placing them on the floor, fix them by sandwiching them between the floor base material and the floor finishing material. It is described that it is fixed with.
Japanese Patent Publication No.57-25702 JP 2000-336790 A

  However, the construction method described in Patent Document 1 has a problem that it is very time-consuming, and the lower horizontal member portion disposed on the bottom of the wall, that is, on the foundation such as concrete. In many cases, the heat insulating material cannot be filled so that a gap having the communication state (hereinafter referred to as “communication gap”) does not occur. Furthermore, when there is a window in the wall structure, and when the horizontal rail is arranged in the wall structure, it cannot be filled so that a communication gap is not generated in the lower horizontal member part, so that the so-called venting from the bottom of the floor and There was a problem that the heat insulation at the place was not sufficiently performed and the heat insulation in the room was poor.

  In addition, in the method described in Patent Document 2, in the case of a newly built wooden house, it is possible to construct the wall very easily at the time of construction, and a wall having suitable airtightness can be obtained. The interior material, ceiling material, or flooring of the building must be peeled off and then re-installed, resulting in a problem that the refurbishment becomes large.

On the other hand, in a wooden house, wood, wall materials, roof materials, and the like deteriorate with time, so that the heat insulating material may be inferior in durability with time and needs to be repaired. In addition, it is desirable to have a high earthquake resistance structure in order to have higher safety in preparation for the occurrence of a major earthquake.
Therefore, the object of the present invention is to solve the above-mentioned problems of the prior art, and can easily be seismically reinforced, and in addition, can be easily filled with a heat insulating material at the time of the seismic proofing to prevent leakage into the housing room and The object is to provide a seismic reinforcement heat insulation repair method for a wall structure capable of enhancing performance.

  The above object is achieved by the present invention described below. That is, the present invention provides a wall base structure composed of upper and lower horizontal members and pillars erected between them, an interior material affixed on the indoor side of the base structure, and a chamber of the structure A seismic reinforcement heat insulation renovation method for a wall structure of a wooden house consisting of an exterior material stuck on the outside, wherein the upper and / or lower part of the exterior material is horizontally cut out only by a predetermined width and appears by the excision In the area partitioned by the interior material and exterior material, the lower horizontal material and / or the upper horizontal material in the floor and the wall and / or the ceiling, the back of the shed, the floor / ceiling space, etc. After filling with a heat insulating material so as not to form a communication gap with each other, a horizontally long reinforcing plate is pasted so as to cover the heat insulating material. Provide construction methods.

  In the above construction method, if a heat insulating material is already filled in the region defined by the outer covering material and the inner covering material, a new heat insulating material is further added to the side surface of the existing heat insulating material that appears by cutting out the outer covering material. , The heat insulating material in the cut portion of the exterior material is densified, and ventilation in the upper and lower horizontal member portions can be blocked.

  The heat-insulating material to be newly filled with the above effect is a fiber-based heat insulating material, and is a fiber-based heat insulating material enclosed in an outer bag having at least a resin film as one layer and deaerated and compressed, and the heat-insulating material It is preferable that the heat insulating material recovers the thickness of the heat insulating material by allowing air to flow into the outer bag of the heat insulating material after filling. Moreover, it is preferable that the thickness when this heat insulating material flows in an exterior bag and the thickness of a heat insulating material is restored is 120-160 mm.

  ADVANTAGE OF THE INVENTION According to this invention, in the case of renovation of the outer wall of a wooden house, the heat insulation of an outer wall can be improved and the earthquake resistance of an outer wall can be improved simultaneously.

  Next, the present invention will be described more specifically with reference to the drawings showing the best mode for carrying out the invention. FIG. 1 is a partially cutaway perspective view schematically showing the structure of an outer wall to which the repair method of the present invention is applied. The outer wall structure shown in FIG. 1 is an example and does not limit the present invention. The outer wall of a wooden house is usually composed of a foundation structure 100, an interior material 1, and an exterior material 2. The foundation structure 100 includes a wooden lower horizontal member 4 fixed on a foundation 3 such as concrete by anchor bolts (not shown), an upper horizontal member 5 that supports a roof structure (not shown), and the lower horizontal members described above. It is comprised from the pillar 6 standingly arranged between the base material 4 and the upper horizontal material 5. FIG. Note that the lower horizontal member and the upper horizontal member in the present invention represent a base and a beam, respectively. For example, an assembly structure (frame structure) or a trunk corresponding to a base or a beam in each level of a building It includes various members such as a difference and is fixed at a right angle between the column and the column and can substantially fix the column base or the column head.

  The interior material 1 pasted on the indoor side in an example of the basic structure is usually composed of a fire-resistant material such as gypsum board and a decorative board or wallpaper applied on the surface thereof. Moreover, the exterior material 2 is comprised as follows. First, a plurality of plate-like bodies (wood slides) 7 made of a material such as cedar and having a length of 75 × width of 1820 × thickness of about 12 mm are fixed to the pillars 6 and 8 with a gap of about 30 mm (openwork). Forms a wooded surface. Further, an asphalt felt 9 is stretched on the wooden surface, and a metal lath 10 is stretched on the outer surface. Furthermore, mortar is sprayed or applied on the outer surface of the metal lath 10 to form a mortar base 11. Furthermore, a finishing material for mortar base such as various coating materials and various boards is provided thereon as necessary.

  The region defined by the interior material 1 and the exterior material 2 of the foundation structure is often filled with a heat insulating material 12 made of foamed resin such as polyurethane foam or glass wool, but is filled with the heat insulating material. In some cases, it remains a spatial domain. In order to improve the earthquake resistance of the outer wall of such a wooden house, a bracing not shown is usually provided. However, various earthquake-resistant improvement methods have been proposed for second-hand wooden houses because of the recognition that the possibility of large earthquakes has increased in recent years.

  As a simple method among the above-mentioned seismic improvement methods, the exterior material 2 on the lower horizontal member side and / or the upper horizontal material side of the wall structure is removed as shown in FIG. As shown, a method of sticking a horizontally long reinforcing surface material 13 and causing the horizontally long reinforcing surface material 13 to function as a brace is conceivable. In carrying out the above construction method, the present inventor has a wall structure in which a region partitioned by the interior material 1 and the exterior material 2 is filled with a heat insulating material as shown in FIG. The heat insulating material and the heat insulating material immediately above the lower horizontal member 4 are deformed over time. In the upper horizontal member 5 part, between the back of the ceiling and the inside of the wall, in the lower horizontal member 4 part, It was recognized that there were communication gaps between the wall and the inside of the wall, and the heat insulation performance was deteriorated by ventilation through these communication gaps.

  The present invention is based on the above knowledge, and in summary, in the above-mentioned seismic improvement method, the heat insulation performance of the outer wall is improved at the same time. The seismic reinforcement heat insulation refurbishment method of the present invention includes an upper part (for example, under the beam) and / or a lower part (for example, on the base) of the exterior material constituting the outer wall of the wooden house described with reference to FIG. As shown in FIG. 2, only a predetermined width (x) is cut horizontally. At this time, the width (x) of the exterior material 2 to be cut is preferably about 200 to 300 mm. If the width (x) is less than 200 mm, the effect of improving the earthquake resistance is insufficient, and the replacement work of the heat insulating material becomes difficult. If the width (x) exceeds 300 mm, the above problem does not occur but it is uneconomical. Moreover, in order to obtain the seismic reinforcement effect, it is desirable that the length (y) to be cut is the same as the length of the outer wall to be repaired.

  When the exterior material 2 is removed as described above, the heat insulating material 12 is filled in a region partitioned by the interior material 1 and the exterior material 2 according to the situation at the time of construction of the house (1) and the region There is a case of a space (2) (not shown) (a case where a heat insulating material is not used in a house).

  In the case of the above (1), when the old heat insulating material 12 is a heat insulating material having high elasticity such as glass wool, the new heat insulating material 14 having elasticity is removed without removing the old heat insulating material 12. By pressing and filling the old heat insulating material 12 (surface), the density of the existing heat insulating material filled in the lower part of the upper horizontal member 5 and the upper part of the lower horizontal member 4 is improved, and the heat insulating performance of the outer wall is improved. Improve. Such a construction method is easy by using a novel heat insulating material to be described later.

  In the case of the above (1), it is possible to remove the old heat insulating material 12 shown in FIG. 2 and fill it with a new heat insulating material 14 instead as shown in FIG. The material can be made dense and is preferably used. Further, in the case of (2), the heat insulating material 14 may be newly filled in the entire region defined by the interior material 1 and the exterior material 2. As the new heat insulating material 14 used as described above, the heat insulating material 14 can be easily filled in the region where the exterior material 2 has not been removed by using a heat insulating material improved technically as described later. Of course, the heat insulating material 14 may be filled only in the region where the exterior material 2 is removed.

  Although the new heat insulating material 14 used above is not particularly limited, it is preferably a fiber heat insulating material, which is a fiber heat insulating material enclosed in an outer bag having at least a resin film as one layer and deaerated and compressed. . Since such a heat insulating material has a small volume at the time of filling, the heat insulating material can be filled even if the place for filling is small, and can be filled on the old heat insulating material 12, and after the filling, the heat insulating material can be filled. By introducing air into the outer packaging bag 14 to restore the thickness of the heat insulating material 14, the performance as the original heat insulating material is exhibited, and structural materials such as the lower horizontal member 4, the column 6, and the intermediate column 8 The space can be hermetically sealed to improve the heat insulation performance. It is preferable that such a heat insulating material 14 has a thickness of 120 to 160 mm when air is introduced into the outer bag and the thickness of the heat insulating material is restored.

  In addition, the position where the heat insulating material is filled is the upper and lower horizontal members in the region partitioned by the interior material and the exterior material that appear by the excision, and the ventilation is continuously performed between the floor and the wall, the ceiling and the wall, etc. It is not particularly limited as long as it is filled with a heat insulating material so that a gap (communication gap) is not generated, and there may be a gap between the lower horizontal material and / or the upper horizontal material and the heat insulating material. When floor joists are placed on the horizontal member (base), the lower horizontal member and / or the upper horizontal member are filled with the heat insulating material in close contact with the joist etc. It is preferable to prevent leakage in the residential room and improve heat insulation performance.

  As described above, when filling the new heat insulating material 14, as shown in FIG. 4, the heat insulating material 14 is inserted into a region wider than the width (x) of the removed outer material 2 in the region from which the outer material 2 has been removed. Therefore, the heat insulation reinforcing effect is further increased. As shown in FIG. 4, a reinforcing face material 13 having the same size and preferably the same thickness as that of the wood shaver 7 is pasted on the area of the removed exterior material 2, and the structure of the original exterior material 2 is formed thereon. Similarly, asphalt felt 9, metal lath 10 and mortar base 11 are constructed, and the entire surface is finished with mortar, or another exterior material is stretched, and the horizontal rail extends over the remaining mortar wall upper surface and exterior material upper surface. Are attached by nailing and the like, and a new exterior material such as a lightweight ceramic siding, vinyl chloride resin siding, tile, or the like is attached to the upper surface thereof to complete the construction method of the present invention.

  In the above description, an example was given in which a mortar wall was formed on a wooded surface with a gap (watermark). However, even when a mortar wall is formed with a plywood as the wall base, the above method is used to improve seismic reinforcement and insulation. Can be constructed. In addition, in the case of an exterior material that has an exterior material attached to the pillar, a body rim is attached to the pillar via the exterior material, and the body rim has been subjected to siding such as ceramics, the seismic reinforcement heat insulation modification should be performed by the above method. Can do. In this case, after removing the siding material and trunk edge and exterior material at the upper and / or lower part of the siding exterior material, that is, the upper and lower surfaces of the wall, applying the above-mentioned heat insulation, pasting the reinforcing surface material, The siding can be attached to the reinforcing face material by attaching a cross rail or the like to the reinforcing face material by nailing or the like.

  As described above, when the earthquake resistance of a wooden used house is simply improved, the heat insulation of the outer wall of the used house can be improved at the same time.

The figure which illustrates a part of mortar outer wall of a wooden house in illustration. The figure which illustrates the construction method of this invention diagrammatically. The figure which illustrates the construction method of this invention diagrammatically. The figure which illustrates the construction method of this invention diagrammatically.

Explanation of symbols

1: Interior material 2: Exterior material 3: Foundation 4: Wooden underlaying material (base or trunk difference)
5: Upper horizontal member (beam or trunk difference)
6: Pillar 7: Wood piling 8: Space pillar 9: Asphalt felt 10: Metal lath 11: Mortar base 12: Heat insulating material 13: Reinforcement surface material 14: New heat insulating material 100: Foundation structure

Claims (4)

A wall base structure composed of a lower horizontal member and an upper horizontal member and a pillar erected between them, an interior material affixed to the indoor side of the basic structure, and an outdoor side of the structure This is a seismic reinforcement heat insulation repair method for a wall structure of a wooden house consisting of an exterior material attached to a wall, and the upper and / or lower portions of the exterior material are horizontally cut out only by a predetermined width and appear by the excision. Within the area defined by the interior material and exterior material, in each part of the lower horizontal material and / or upper horizontal material, under the floor and in the wall and / or in the ceiling, the back of the shed, the floor / ceiling space, etc. after filling the cross heat material as linking gap does not occur respectively between, Retrofit insulation repair of the wall structure of wooden houses, characterized in that affixed to horizontal reinforcing plate so as to cover the heat insulating member Construction method.   The seismic reinforcement heat insulation refurbishment of Claim 1 which fills the side surface of the existing heat insulating material further with a new heat insulating material, when the heat insulating material is already filled in the area | region divided by the said exterior material and the said interior material. Construction method.   The newly-filled heat insulating material is a fiber-based heat insulating material, and is a fiber-based heat insulating material that is sealed in an outer bag having at least a resin film as one layer and is deaerated and compressed, and is filled with the heat insulating material. The seismic reinforcement heat insulating repair method according to claim 1 or 2, wherein the heat insulating material is a heat insulating material whose thickness is restored by allowing air to flow into the outer bag of the heat insulating material.   The earthquake-resistant reinforcing and heat-insulating repair method according to claim 3, wherein the heat insulating material has a thickness of 120 to 160 mm when air is introduced into the exterior bag to restore the thickness of the heat insulating material.

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