JP2009046801A - Building basic insulation structure and construction method - Google Patents

Abstract

The present invention provides a structure that suitably surrounds the foundation of a building that surrounds the ground surface directly under the building body and has a rising portion that supports the building body.
A structure in which a foundation 2 of a building 1 is insulated. On the ground surface in the foundation 2, an ant moisture-proof sheet 3 having ant moisture-proof performance is laid with the extra length portion 3 a on the inner peripheral surface of the rising portion 2 a of the foundation 2 without gaps. A plate-like heat insulating material 4 is fixedly installed on the inner peripheral surface of the rising portion 2a of 2 with the extra length portion 3a of the ant-proof moisture-proof sheet 3 sandwiched therebetween.
[Selection] Figure 1

Description

  The present invention relates to a structure and a method for insulating a foundation of a building that surrounds a ground surface directly under the building body and has a rising portion that supports the building body.

  Conventionally, in order to insulate the lower part of a building, floor insulation in which a heat insulating material is installed on the back surface of the floor board has been common.

On the other hand, as disclosed in Patent Document 1, for example, a structure that insulates the foundation of a building on the assumption that an underfloor heater is installed is known.
JP 2003-279058 A

  In the foundation thermal insulation structure disclosed in Patent Document 1, a solid foundation in which the ground surface directly under the building main body, which is becoming mainstream in recent years, is entirely covered with concrete is used. On the other hand, in existing buildings in particular, a foundation (a foundation in which the ground surface is left in the foundation) that surrounds the ground surface immediately below the building body and has a rising portion that supports the building body is often used.

  However, a structure and a construction method for suitably insulating such a foundation are not heard.

  Then, this invention aims at providing the structure and construction method which heat-insulate suitably the foundation of the building (especially existing building) which surrounds the ground surface just under a building main body, and has a standing part which supports this building main body. It is said.

  In order to achieve the above-mentioned object, the basic thermal insulation structure of a building of the present invention surrounds the ground surface directly under the building main body and insulates the foundation of the building having a rising portion that supports the building main body. A sheet having at least one of ant-proof performance, moisture-proof performance, and ant-proof moisture-proof performance on the ground surface in the foundation, with no gap, on the inner peripheral surface of the rising portion of the foundation. , And a heat insulating material is fixedly installed on the inner peripheral surface of the rising portion of the foundation with the extra length of the sheet interposed therebetween.

  Here, in the rising portion of the foundation, a sheet pressing member may be placed on the upper surface of the sheet, and a heat insulating material may be fixedly installed on the upper surface of the sheet pressing member with the extra length portion of the sheet interposed therebetween. .

  Moreover, the underfloor heater may be installed on the said sheet | seat through the noncombustible heat insulation board.

  Furthermore, the basic thermal insulation method for a building according to the present invention is a basic thermal insulation method for a building that insulates the foundation of a building having a rising portion that supports the building body, while enclosing the ground surface directly under the building body, A sheet laying step of laying a sheet having at least one of ant-proof performance, moisture-proof performance, and ant-proof moisture-proof performance on the ground surface in the foundation, with the extra length portion in contact with the inner peripheral surface of the rising portion of the foundation And a heat insulating material fixing and installing step of fixing and installing the heat insulating material by sandwiching the extra length portion of the sheet on the inner peripheral surface of the rising portion of the foundation.

  Here, in the sheet laying step, the sheet pressing member is placed on the upper surface of the sheet, the extra length portion of the sheet is in contact with the inner peripheral surface of the rising portion of the foundation, and the upper surface of the sheet pressing member is You may perform the said heat insulating material fixing installation process after inserting | pinching the surplus length part of the said sheet | seat.

  Further, in the sheet laying step, the sheets may be integrated by laying a plurality of sheets having a predetermined size on the ground surface in the foundation without gaps, and bonding the sheets together with a tape.

  Moreover, even if the underfloor heater installation process which installs an underfloor heater via a non-combustible heat insulation board on the said sheet after the said sheet laying process or the said heat insulating material fixing installation process, or during the said sheet laying process, Good.

  Furthermore, when the upper surface of the foundation is covered with a floor and an existing heat insulating material is disposed on the lower surface of the floor, an existing heat insulating material removing step of removing the existing heat insulating material is provided.

  The basic heat insulation structure and construction method of the building of the present invention configured as described above is excellent in workability, can be implemented economically with a short construction period, surrounds the ground surface directly under the building body, and supports the building body. It is possible to suitably insulate a foundation (a foundation in which a ground surface is left in the foundation) of a building having a part (particularly an existing building).

  When the sheet pressing member is used, the extra length portion of the sheet can be in a state of being in contact with the rising portion of the foundation in advance by the weight of the sheet pressing member. Therefore, it is easy to fix and install the heat insulating material on the rising portion of the foundation with the extra length portion of the sheet interposed therebetween.

  Further, when the underfloor heater is installed through the non-combustible heat insulating board, the underfloor heating system can be easily realized without causing the non-combustible heat insulating board to deteriorate the lower sheet of the underfloor heater with heat.

  Hereinafter, the best mode for realizing the basic thermal insulation structure and construction method of a building of the present invention will be described based on Example 1 and Example 2 shown in the drawings.

  First, a basic thermal insulation structure for a building of Example 1 will be described.

  As shown in FIG. 1, the basic heat insulating structure of the building of Example 1 surrounds the ground surface directly under the building main body 1 </ b> A, and insulates the foundation 2 of the building 1 having the rising portion 2 a that supports the building main body 1 </ b> A. It is a structure to do. An ant-proof moisture-proof sheet 3 having ant-proof moisture-proof performance as a sheet is formed on the ground surface in the foundation 2 with a plate-like sheet pressing member 5 as a weight on the inner peripheral surface of the rising portion 2 a of the foundation 2. The surplus length portion 3a is laid in contact with each other, and the surplus length portion 3a of the ant-proof moistureproof sheet 3 is sandwiched between the upper surface of the sheet pressing member 5 on the inner peripheral surface of the rising portion 2a of the foundation 2, and a plate-shaped heat insulating material Reference numeral 4 denotes a fixed installation.

  This building 1 is an existing building.

  The foundation 2 has a cross-sectional structure including a footing portion 2b in the ground and a rising portion 2a protruding from the ground, and is composed of an outer peripheral foundation 2A that surrounds the ground surface on the bottom surface of the building 1 and a middle foundation 2B that connects the center portion thereof. (See FIG. 4).

  As this ant-proof moisture-proof sheet 3, for example, a commercially available product such as Aridan (registered trademark) manufactured by Fukubi Chemical Industry Co., Ltd. is preferably used.

  The plate-like sheet pressing member 5 is made of concrete, and when the heat insulating material 4 is installed on the inner peripheral surface of the rising portion 2a of the foundation 2, the extra length portion 3a of the ant moistureproof sheet 3 is used as the heat insulating material. The extra length portion 3 a of the ant-proof moisture-proof sheet 3 functions as a weight for interfacing with the inner peripheral surface of the rising portion 2 a of the foundation 2 so as to be easily sandwiched in the lower portion of 4. Therefore, as this plate-shaped sheet pressing member 5, for example, a thin member having a thickness of about 20 mm may be used. However, the plate-like sheet pressing member 5 is not limited to a concrete one, as long as it functions as a weight.

  The plate-like heat insulating material 4 is made of extruded polystyrene foam used as a normal heat insulating material, and the extra length portion 3a of the ant-proof moisture-proof sheet 3 is provided on the inner peripheral surface of the rising portion 2a of the foundation 2. It is sandwiched between the lower parts and fixed and installed with an adhesive and concrete screws 15 (see FIG. 2). However, since this plate-shaped heat insulating material 4 should just exhibit the heat insulation performance required, it is not limited to the thing made from an extrusion method polystyrene foam.

  Further, the floor beam 10 made of C-shaped steel is filled with fine fiber glass wool 11 in the concave portion, thereby further improving the heat insulation in the foundation 2.

  Furthermore, although illustration is omitted, for example, when there is a gap between the floor beam 10 and the edge of the floor board 6, this gap is closed with an airtight material such as urethane foam to further improve the heat insulation in the foundation 2. It may be improved.

  In addition, since the building 1 is an existing building, when the existing heat insulating material is arrange | positioned between the floor beam 7 and the floor joist 8 of the lower surface of the floor board 6, you may leave as it is.

  Next, the basic thermal insulation method for a building of Example 1 will be described with reference to FIGS. FIG. 3 is a flowchart of the basic thermal insulation method for this building.

  The basic thermal insulation construction method of the building of Example 1 is a construction method for implementing the basic thermal insulation structure of Example 1 described above.

  First, when the existing moisture-proof sheet is laid, it is removed (step A1).

  Subsequently, a commercially available ant-proof moisture-proof sheet 3, a plate-shaped sheet pressing member 5, a plate-shaped heat insulating material 4 and other necessary members and tools wound in a roll shape with a constant width from the basic inspection port 9 are placed in the foundation 2. (Step A2). In addition, as the plate-shaped heat insulating material 4, in consideration of carry-in property and workability, a material having an appropriate length obtained by equally dividing each side in plan view of the inner peripheral surface of the rising portion 2 a of the foundation 2 is used. ing. In this Example 1, the wife side uses the heat insulating material 4 of the length divided into two, the girder side uses the heat insulating material 4 of the length divided into six, and in the part adjacent to the lower part of the bathtub, A heat insulating material 4 having a length obtained by further dividing the heat insulating material 4 on the girder side into two equal parts is used, and a total of three types of heat insulating materials 4 are used.

  Subsequently, as shown in FIGS. 2 and 4, the ant-proof moisture-proof sheet 3 wound in a roll shape on the ground surface in the foundation 2 is set to the length of each side of the outer foundation 2 </ b> A of the foundation 2 and the length of the middle foundation 2 </ b> B. The cut sheet is laid after placing the plate-like sheet pressing member 5 as a weight so that the extra length portion 3a is in contact with the inner peripheral surface of the rising portion 2a of the foundation 2 (step A3).

  And the extra length part 3a of the ant-proof moisture-proof sheet 3 is inserted into the inner peripheral surface of the rising part 2a of the foundation 2, and the plate-like heat insulating materials 4,. (Step A4).

  Subsequently, as shown in FIG. 5, the ant moisture-proof sheet 3 wound in a roll shape without gaps on the ground surface in the remaining foundation 2 where the ant-proof moisture-proof sheet 3 is not laid is cut to an appropriate length. (Step A5).

  Subsequently, as shown in FIG. 7, a plurality of ant-proof moisture-proof sheets 3,... Cut and laid are pasted with an ant-proof moisture-proof tape 16 made of the same material as the ant-proof moisture-proof sheet 3. (Step A6).

  Finally, as shown in FIG. 6, the heat insulating material 4 is also installed and finished in the basic inspection port 9 (step A7).

  In addition, if the outside of the basic inspection port 9 is closed with a metal plate or the like, it looks good.

  The basic thermal insulation structure and construction method of the building of Example 1 configured in this way is excellent in workability, can be implemented economically with a short construction period, surrounds the ground surface directly under the building main body 1A, and The foundation 2 of the building 1 having the rising portion 2a to be supported can be suitably insulated.

  Further, in the first embodiment, since the sheet pressing member 5 is used, the extra length portion 3a of the ant moisture-proof sheet 3 is in contact with the rising portion 2a of the foundation 2 in advance by the weight of the sheet pressing member 5 in advance. can do. Therefore, it is easy to fix and install the heat insulating material 4 on the rising portion 2 a of the foundation 2 with the extra length portion 3 a of the ant moisture-proof sheet 3 interposed therebetween.

  Next, the basic thermal insulation structure for a building of Example 2 will be described.

  As shown in FIG. 8, the basic heat insulation structure of the building of Example 2 surrounds the ground surface directly under the building main body 1A, and insulates the foundation 2 of the building 1 having the rising portion 2a that supports the building main body 1A. It is a structure to do. An ant-proof moisture-proof sheet 3 having ant-proof moisture-proof performance as a sheet is formed on the ground surface in the foundation 2 with a plate-like sheet pressing member 5 as a weight on the inner peripheral surface of the rising portion 2 a of the foundation 2. The surplus length portion 3a is laid in an interview, and the plate-shaped heat insulating material is further sandwiched between the inner peripheral surface of the rising portion 2a of the foundation 2 and the upper surface of the sheet pressing member 5 with the surplus length portion 3a of the ant-proof moisture-proof sheet 3 4 is fixedly installed, and an underfloor heater 13 is installed on the ant-proof moisture-proof sheet 3 via a non-combustible heat insulating board 12.

  That is, it differs from Example 1 that the underfloor heater 13 is installed on the ant-proof moisture-proof sheet 3 via the non-combustible heat insulating board 12. Since other configurations are the same as those of the first embodiment, the corresponding components are denoted by the same reference numerals and description thereof is omitted.

  This building 1 is also an existing building.

  This incombustible heat insulating board 12 is an ALC board (lightweight cellular concrete board) and does not deteriorate the ant-proof moisture-proof sheet 3 under the underfloor heater 13 with heat. However, the incombustible heat insulating board 12 only needs to have both incombustibility to the heat of the underfloor heater 13 and heat insulation that does not deteriorate the ant-proof moistureproof sheet 3 under the underfloor heater 13 with heat. It is not limited to.

  The underfloor heater 13 includes a heat equalizing plate 13a on the upper surface, and has a function of transferring heat as evenly as possible to the entire surface of the floor plate 6.

  Furthermore, when there is a gap in the existing floor board 6, a new floor board 14 is overlaid on the floor board 6 so that heat is evenly transmitted onto the floor board 14.

  In addition, since the building 1 is an existing building, when an existing heat insulating material is disposed between the floor beam 7 on the lower surface of the floor board 6 and the floor joists 8, unlike the first embodiment, the underfloor heater 13 The existing heat insulating material is removed in order to transfer the heat to the floor board 6.

  Next, the basic thermal insulation method for a building of Example 2 will be described with reference to FIGS. 4 and 10 to 12 of Example 1. FIG. FIG. 9 is a flowchart of the basic thermal insulation method for this building.

  The foundation thermal insulation construction method of the building of Example 2 is a construction method for implementing the basic thermal insulation structure of Example 2 described above.

  First, if the existing moisture-proof sheet is laid, remove it. The case where the existing heat insulating material is disposed on the lower surface of the floor board 6 is also removed (step B1).

  Subsequently, a commercially available ant-proof moisture-proof sheet 3, a plate-shaped sheet pressing member 5, a plate-shaped heat insulating material 4 and other necessary members and tools wound in a roll shape with a constant width from the basic inspection port 9 are placed in the foundation 2. (Step B2). In addition, as the plate-shaped heat insulating material 4, in consideration of carry-in property and workability, a material having an appropriate length obtained by equally dividing each side in plan view of the inner peripheral surface of the rising portion 2 a of the foundation 2 is used. ing. Also in this Example 2, as in Example 1, the wife side uses the heat insulating material 4 having a length divided into two, and the girder side uses the heat insulating material 4 having a length divided into six, and the bathtub In the part adjacent to the lower part, the heat insulating material 4 having a length obtained by further dividing the heat insulating material 4 on the girder side into two equal parts is used, and the heat insulating materials 4 having three kinds of lengths are used in total.

  Subsequently, as shown in FIGS. 2 and 4, the ant-proof moisture-proof sheet 3 wound in a roll shape on the ground surface in the foundation 2 is set to the length of each side of the outer foundation 2 </ b> A of the foundation 2 and the length of the middle foundation 2 </ b> B. The cut sheet is laid after placing the plate-like sheet pressing member 5 as a weight so that the extra length portion 3a is in contact with the inner peripheral surface of the rising portion 2a of the foundation 2 (step B3).

  And the extra length part 3a of the ant-proof moisture-proof sheet 3 is inserted into the inner peripheral surface of the rising part 2a of the foundation 2, and the plate-like heat insulating materials 4,. (Step B4).

  Subsequently, as shown in FIG. 10, a roll is placed at a place where a concentration box 17 for bundling a plurality of incombustible heat insulating boards 12,... And a plurality of underfloor heaters 13,. The ant-proof moisture-proof sheet 3 wound in a shape is cut into an appropriate length and laid (step B5).

  Then, a plurality of non-combustible heat insulating boards 12,... Are carried in from the basic inspection port 9 and placed on the ant-proof moisture-proof sheet 3 laid at the placement location (step B6). In addition, this incombustible heat insulation board 12 uses the thing of the magnitude | size divided into 3 equal parts so that it can carry in from the basic inspection port 9 as a set.

  Subsequently, as shown in FIG. 11, the concentration box 17 and the plurality of underfloor heaters 13,... Are carried from the basic inspection port 9, and the concentration box 17 is laid on the mounting position. 3 and a plurality of underfloor heaters 13,... Are placed on non-combustible heat insulating boards 12,. In addition, the thing of the magnitude | size which can be carried in from the basic inspection port 9 is used for the concentration box 17 and the underfloor heater 13.

  Then, the ant-proof moisture-proof sheet 3 wound in a roll shape without gaps on the ground surface in the remaining foundation 2 where the ant-proof moisture-proof sheet 3 is not laid is cut and laid to an appropriate length (step B8).

  Subsequently, as shown in FIG. 13, a plurality of ant-proof moisture-proof sheets 3,... Cut and laid are pasted with an ant-proof moisture-proof tape 16 made of the same material as the ant-proof moisture-proof sheet 3. (Step B9).

  Finally, as shown in FIG. 12, the heat insulating material 4 is also installed and finished in the basic inspection port 9 (Step B10).

  In addition, if the outside of the basic inspection port 9 is closed with a metal plate or the like, it looks good.

  Also, the wiring diagrams of the plurality of underfloor heaters 13,... Are omitted because they are not directly related to the gist of the present invention.

  In addition to the effects of the first embodiment described above, the basic heat insulation structure and construction method of the building of the second embodiment configured in this way deteriorate the ant-proof moisture-proof sheet 3 at the bottom of the underfloor heater 13 with heat by the non-combustible heat insulating board 12. Without this, an underfloor heating system can be realized easily.

  The best embodiment of the present invention has been described in detail with reference to the drawings, but the specific configuration is not limited to this embodiment and example, and the design does not depart from the gist of the present invention. Such modifications are included in the present invention.

  For example, although the said Example 1, 2 was an Example applied in the existing building as the building 1, of course, it can implement also in a new building.

  Moreover, although the foundation 2 which consists of the outer periphery foundation 2A and the middle foundation B was employ | adopted as a foundation, this foundation surrounds the ground surface just under a building main body, and has a standing part which supports this building main body (the ground in the foundation) However, the present invention is not limited to this.

  Moreover, although workability | operativity falls, it is not necessary to use the sheet pressing member 5. FIG.

  Furthermore, although the ant-proof moisture-proof sheet 3 was used as a sheet laid in the foundation, in the case of a building constructed in a place where it is not necessary to worry about moisture in the foundation, only the ant-proof sheet may be laid. . In the case of a building constructed in a place where there is no damage by white ants, only a moisture-proof sheet may be laid. Furthermore, a double sheet having a lower ant-proof sheet and an upper moisture-proof sheet may be laid.

It is a longitudinal cross-sectional view which shows schematic structure of the heat insulation structure of the building of Example 1. FIG. It is a partial expansion perspective view which shows schematic structure in the internal peripheral surface of the rising part of a foundation. It is a flowchart of the heat insulation construction method of the building of Example 1. It is a perspective view which shows the process of the heat insulation construction method of the building of Example 1. FIG. It is a perspective view which shows the process of the heat insulation construction method of the building of Example 1. FIG. It is a perspective view which shows the process of the heat insulation construction method of the building of Example 1. FIG. It is a partial expansion perspective view which shows the process of the heat insulation construction method of the building of Example 1. FIG. It is a longitudinal cross-sectional view which shows schematic structure of the heat insulation structure of the building of Example 2. FIG. It is a flowchart of the heat insulation construction method of the building of Example 2. It is the perspective view which showed the process of the heat insulation construction method of the building of Example 2. FIG. It is a perspective view which shows the process of the heat insulation construction method of the building of Example 2. FIG. It is a perspective view which shows the process of the heat insulation construction method of the building of Example 2. FIG. It is a partial expansion perspective view which shows the process of the heat insulation construction method of the building of Example 2. FIG.

Explanation of symbols

1A Building body 1 Building 2 Foundation 2a Standing part 3 Ant-proof moisture-proof sheet (sheet)
3a Extra length 4 Insulating material 5 Sheet holding member 12 Non-combustible heat insulating board 13 Underfloor heater 16 Anti-ant moisture barrier tape (tape)

Claims (8)

It is a basic thermal insulation structure for a building that surrounds the ground surface directly under the building main body and insulates the foundation of the building having a rising portion that supports the building main body,
A sheet having at least one of ant-proof performance, moisture-proof performance, and ant-proof moisture-proof performance is laid on the inner peripheral surface of the rising portion of the foundation so that the extra length portion is in contact with the ground surface in the foundation without any gap. A heat insulating structure for a building is characterized in that a heat insulating material is fixedly installed on an inner peripheral surface of a rising portion of the foundation with an extra length portion of the sheet interposed therebetween.   In the rising portion of the foundation, a sheet pressing member is placed on the upper surface of the sheet, and a heat insulating material is fixedly installed on the upper surface of the sheet pressing member with the extra length portion of the sheet interposed therebetween. The basic heat insulation structure for a building according to claim 1.   The building base insulation structure according to claim 1 or 2, wherein an underfloor heater is installed on the sheet via a non-combustible heat insulating board. A basic thermal insulation method for a building that surrounds the ground surface directly under the building body and insulates the foundation of the building having a rising portion that supports the building body,
A sheet laying step of laying a sheet having at least one of ant-proof performance, moisture-proof performance, and ant-proof moisture-proof performance on the ground surface in the foundation, with an extra length portion in contact with the inner peripheral surface of the rising portion of the foundation When,
A heat insulation fixing method for a building comprising a heat insulating material fixing installation step of fixing and installing a heat insulating material on an inner peripheral surface of a rising portion of the foundation with an extra length portion of the sheet interposed therebetween.   In the sheet laying step, a sheet pressing member is placed on the upper surface of the sheet, the extra length portion of the sheet is in contact with the inner peripheral surface of the rising portion of the foundation, and the upper surface of the sheet pressing member 5. The building basic heat insulation construction method according to claim 4, wherein the heat insulating material fixing and installing step is performed after sandwiching an extra length portion.   In the sheet laying step, the sheet is characterized in that a plurality of sheets having a predetermined size are laid on the ground surface in the foundation without gaps, and these sheets are bonded together with tape to be integrated. The building basic heat insulation construction method according to claim 4 or 5.   After the sheet laying step or the heat insulating material fixing and setting step, or during the sheet laying step, performing an underfloor heater setting step of setting an underfloor heater on the sheet via a non-combustible heat insulating board. The building basic insulation method according to any one of claims 4 to 6.   In the case where the upper surface of the foundation is covered with a floor portion and an existing heat insulating material is disposed on the lower surface of the floor portion, an existing heat insulating material removing step of removing the existing heat insulating material is provided. The building basic heat insulation method according to any one of claims 4 to 7.

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