JP4965987B2 - Construction method of heat insulation structure in building - Google Patents

Description

The present invention relates to a method for the construction of the thermal insulation structure in the building.

  In recent years, in order to improve the comfort and energy efficiency of the house, high thermal insulation has been required. And in order to realize high thermal insulation, instead of the floor thermal insulation method for constructing a thermal insulation material on the floor, the adoption of a basic thermal insulation method for constructing a thermal insulation material made of foamable resin or the like on the foundation has been activated (for example, Patent Document 1). In order to increase the heat insulation effect by adopting this foundation heat insulation method, it is necessary to consider that the floor beam existing between the foundation heat insulating material and the wall heat insulating material does not become a heat bridge.

By the way, when building a house, it is necessary to consider measures against white ants. White ants have darkness as their range of action. Also, white ants can easily break through the foamed resin that forms the basic heat insulating material. Therefore, when the heat insulating material is disposed on the outdoor side of the foundation as in the house described in Patent Document 1, ant roads are formed in the basic heat insulating material, and white ants may invade into the underfloor space. However, Patent Document 1 does not disclose any countermeasures against white ants.
JP 2004-76353 A

The present invention has been made in view of the above problems, it is an object to provide a method of constructing the insulation structure that prevails building to improve the thermal insulation. The present invention is an object to provide a method of constructing the insulation structure that prevails buildings to suppress the occurrence of Arigai.

  Hereinafter, means and the like effective for solving the above-described problems will be described while showing functions and effects as necessary.

  The present invention relates to a lower structure provided along a wall partitioning the inside and outside of a building, a floor beam arranged along the upper surface in a state having a predetermined gap from the upper surface of the lower structure, and an upper side of the floor beam It is the heat insulation structure in the building provided with the wall body arrange | positioned as a wall part and the wall body in which the wall heat insulating material was arrange | positioned. The floor beam heat insulating material is made of a fiber material and covers the upper and lower portions of the floor beam on the indoor side, and the lower end portion of the floor beam heat insulating material is disposed in the gap between the upper surface of the lower structure and the floor beam. It is characterized by that. Here, the lower structure means a foundation for a floor beam on the first floor, and a building structure (underfloor structure) on the first floor for a floor beam on the second floor.

  In this invention, the floor beam heat insulating material which covers the lower part from the upper part in the indoor side of the floor beam is also provided in the floor beam part. For this reason, it is suppressed that a floor beam part becomes a heat bridge and the heat insulation of a building deteriorates. Therefore, it is possible to improve the heat insulation of the building and improve comfort and energy efficiency.

  Moreover, it is desirable to arrange | position a lower structure heat insulating material in the inner side surface of a lower structure, and to arrange | position in the state which the lower end part of the floor beam heat insulating material contacted the lower structure heat insulating material. In this case, since the lower end part of the floor beam heat insulating material and the lower structure heat insulating material are brought into contact with each other to form a continuous heat insulating line, the heat insulating property of this portion can be further improved. More specifically, it becomes possible to form a substantially continuous heat insulation line by three heat insulating materials (wall heat insulating material, floor beam heat insulating material, and lower structure heat insulating material), and the heat insulating property of the building is improved.

  The lower structure heat insulating material is disposed inside the lower structure. Therefore, when the present invention is applied to the floor beam of the first floor portion, the foundation heat insulating material is disposed inside the foundation. As a result, it is possible to reduce the risk of white ants entering from the outside.

  Here, it is preferable that the floor beam heat insulating material is formed by covering a fiber material with an airtight material, and an airtight line extending from the upper surface of the lower structure to the upper portion of the floor beam is formed by the airtight material. According to this, since the heat-insulating and air-tight line is formed at a position covering the floor beam, it is possible to further improve the comfort and energy efficiency of the building. In particular, in the present invention, since the fiber material is covered with an airtight material to form the floor beam heat insulating material, the heat insulating line and the airtight line can be formed in one step of arranging the floor beam heat insulating material. In addition, the total work time for forming the airtight line can be reduced.

  In the construction method of the heat insulating structure in the building of the present invention, the upper end portion of the floor beam heat insulating material arranged on the indoor side of the floor beam is attached to the upper portion of the floor beam or a member thereabove, and the lower end portion of the floor beam heat insulating material is attached. The lower end of the floor beam insulation is moved by holding the insulation material installation jig, one end of which protrudes to the outdoor side of the floor beam, and moving the insulation material installation jig from the outdoor side of the building to the outdoor side. It is characterized by being drawn into the gap between the upper surface of the lower structure and the floor beam.

  By using the heat insulating material disposing jig, it is possible to perform the operation of disposing the lower end portion of the floor beam heat insulating material between the upper surface of the lower structure and the floor beam from the outdoor side. This allows floor beam insulation to be placed between the upper surface of the lower structure and the floor beam without having to work in a narrow underfloor space even after the floor material has been placed on the floor beam. It becomes possible to do. For this reason, the operation | work which arrange | positions a floor beam heat insulating material to the indoor side of a floor beam can be performed easily and efficiently, and the safety | security of an operation | work improves. Moreover, since it is easy to arrange | position a floor beam heat insulating material in the indoor side of a floor beam before and after arrangement | positioning of a floor material, the freedom degree of construction order increases.

  Moreover, since the floor beam heat insulating material is made of a fiber material, it has flexibility. Therefore, it becomes possible to draw in the gap between the upper surface of the lower structure and the floor beam while deforming the floor beam heat insulating material held at one end of the heat insulating material arranging jig, and the arrangement work becomes easy. .

  The construction method for a heat insulating structure in a building according to the present invention is formed by connecting a plurality of building units in which a rectangular parallelepiped skeleton is formed by columns, floor beams, and ceiling beams, and floor materials, wall bodies, and the like are attached to the skeleton. It can be applied to unit buildings. When applied to a unit type building, the upper end of the floor beam insulation disposed on the indoor side of the floor beam is attached to the upper part of the floor beam or a member above it, and the lower end of the floor beam insulation is Is held by a heat insulating material disposing jig projecting to the outdoor side of the floor beam, and the building unit in a state where the heat insulating material disposing jig is temporarily fixed to the lower part of the floor beam is installed on the lower structure. After that, the temporary fixing of the insulation material placement jig to the lower part of the floor beam is released, and the lower end part of the floor beam insulation material is moved to the lower part by moving the insulation material installation jig from the outdoor side of the building to the outdoor side. It draws in the clearance gap between the upper surface of a structure, and the said floor beam.

  In the case of a unit type building, in many cases, a floor board is already attached to the floor beam at the stage of manufacturing the building unit. Therefore, if work is to be performed on the indoor side of the lower structure after the building unit is placed on the lower structure, work in the underfloor space is required. In this regard, by using the heat insulating material disposing jig, it is possible to perform the operation of disposing the lower end portion of the floor beam heat insulating material between the upper surface of the lower structure and the floor beam from the outdoor side. As a result, the floor beam heat insulating material can be disposed on the indoor side of the floor beam without working in a narrow underfloor space. For this reason, the operation of arranging the floor beam heat insulating material between the upper surface of the lower structure and the floor beam can be performed easily and efficiently, and the safety of the operation is improved.

  Further, the building unit is installed on the lower structure in a state in which the heat insulating material arranging jig is temporarily fixed to the lower part of the floor beam. Thereby, at the time of installation of a building unit, it can suppress that a heat insulating material arrangement | positioning jig | tool moves contrary to an operator's intention. As a result, when the building unit is installed on the lower structure, it is possible to prevent the heat insulator placement jig and the floor beam heat insulator from moving and obstructing the work.

  Temporary fixing of the heat insulating material disposing jig to the lower part of the floor beam can be performed by providing a clip portion on the heat insulating material disposing jig and engaging the clip portion with the floor beam. By using the means of engagement at the clip portion, the temporarily fixed state is released only when the heat insulating material disposing jig is moved in a specific direction, so that the temporarily fixed state of both can be stabilized. In addition, when the floor beam is made of steel, the magnet is fixed to the heat insulating material disposing jig, and the heat insulating material disposing jig is temporarily fixed to the lower part of the floor beam by the magnetic force of the magnet. May be. Thereby, it becomes possible to temporarily fix the heat insulating material arranging jig to the floor beam with a simple configuration.

  It is desirable to provide an adhesive portion on the heat insulating material arranging jig and hold the lower end portion of the floor beam heat insulating material with the adhesive portion. Thereby, it becomes possible to hold | maintain the lower end part of a floor-beam heat insulating material with a heat insulating material arrangement | positioning jig by simple structure. In addition, since the floor beam heat insulating material is held by the adhesive portion, the heat insulating material distribution jig is moved in a direction in which the lower end portion of the floor beam heat insulating material and the heat insulating material distribution jig are separated from each other. The holding state of the floor beam insulation by the jig can be easily solved. Thereby, after arrange | positioning the lower end part of a floor beam heat insulating material between the upper surface of a lower structure, and a floor beam, it becomes easy to isolate | separate a heat insulating material installation jig | tool from a building structure. In addition, as a specific structure of an adhesion part, a double-sided tape can be stuck to a heat insulating material arrangement jig.

  The floor beam heat insulating material can be formed in a long shape extending along the floor beam, and in that case, the floor beam is formed by a plurality of heat insulating material arranging jigs arranged at predetermined intervals in the longitudinal direction. It is desirable to retain insulation. Thereby, it becomes possible to arrange | position the lower end part of a floor-beam heat insulating material in the clearance gap between the upper surface of a lower structure, and a floor beam over the whole elongate direction.

  Hereinafter, one embodiment which materialized the heat insulation structure in the building of the present invention is described based on a drawing. In this embodiment, it is embodied in a two-story unit type building constructed by a steel frame ramen unit method, and an outline of the unit type building 10 is shown in FIG. The unit type building 10 includes a building main body 11 formed by combining a plurality of building units 20 and a roof 12 disposed above the building main body 11.

  FIG. 2 is a perspective view showing the structure of the skeleton in the building unit 20. FIG. 3 is a cross-sectional view from the wall body to the foundation in the first floor portion of the unit type building 10. In FIG. 3, the right side of the page is the outdoor side of the building, and the left side is the indoor side of the building. As shown in FIG. 2, in the building unit 20, columns 21 are arranged at the four corners, and the lower end and upper end of each column 21 are connected by four floor beams 22 and ceiling beams 23, respectively. A rectangular parallelepiped skeleton (frame) is formed by the pillars 21, the floor beams 22, and the ceiling beams 23. The column 21 is made of a square tubular steel material, and the floor beam 22 and the ceiling beam 23 are made of a long steel material having a U-shaped cross section. The floor beam 22 and the ceiling beam 23 are arranged with the opening side of the U-shaped cross section facing the inner side in the horizontal direction of the building unit 20. In addition, the floor beam 22 is fixed slightly above the lower end of each column 21, and when the building unit 20 is installed on the foundation 31, it is between the upper surface of the foundation 31 and the lower surface portion 22 a of the floor beam 22. A predetermined gap is formed on the surface (see FIG. 3).

  A plurality of floor beams 25 are bridged at predetermined intervals between the floor beams 22 on the long sides of the building unit 20 facing each other. Similarly, a plurality of ceiling beams 26 are bridged at predetermined intervals between the opposed ceiling beams 23 of the long side portion of the building unit 20. A joist is arranged on the floor beam 22 in the extending direction of the floor beam 22, and the floor base plate 33 is supported by the joist and the floor beam 25. Further, the ceiling base material is supported by the ceiling beam 26.

  The details of the building unit 20 will be further described with reference to FIG. As described above, the joist 32 is disposed on the floor beam 22, and the floor base plate 33 is laid on the joist 32 and the floor beam 25. An inner wall base 39 is disposed at the edge of the floor base plate 33. The inner wall base 39 includes an inner wall frame 34 formed in a frame shape and an inner wall base plate 35 fixed to the indoor side of the inner wall frame 34. In the frame of the inner wall frame 34, a wall heat insulating material 36 is disposed along the plate surface of the inner wall base plate 35. The wall heat insulating material 36 is obtained by filling a fiber heat insulating material 38 such as glass wool in a moisture-proof air-tight bag 37 in which a polyethylene film having moisture-proof air-tightness is formed in a bag shape. Note that a large number of small holes (not shown) are provided on the outdoor side surface of the moisture-proof and air-tight bag 37 for allowing the moisture of the fiber-based heat insulating material 38 to escape from the moisture-proof and air-tight bag 37. This ensures indoor airtightness on the surface on the inner wall base plate 35 side of the moisture-proof and airtight bag 37 and also prevents moisture of the fiber-based heat insulating material 38 on the outdoor side surface of the moistureproof and airtight bag 37. It is possible to escape to the outside.

  An outer wall 41 is disposed on the side surface of the floor beam 22 on the outdoor side. The outer wall 41 includes an outer wall frame 42 formed in a frame shape and an outer wall panel 43 fixed to the outdoor side of the outer wall frame 42. Then, the outer wall frame 42 is screwed to the columns 21, floor beams 22, ceiling beams 23, and intermediate columns (not shown) disposed between the floor beams 22 and the ceiling beams 23, so that the outer wall 41 is formed. It is fixed to the skeleton of the building unit 20. A wall body 40 is constituted by the inner wall base 39 and the outer wall 41 described above.

  The building unit 20 configured as described above is placed on a foundation 31 made of reinforced concrete. And the building unit 20 is being fixed to the foundation 31 by fixing the lower end part of the four pillars 21 to the anchor bolt (not shown) protruding from the foundation 31. FIG.

  In the unit type building 10 of the present embodiment, a basic heat insulation method is employed. A base heat insulating material 44 made of a foamed resin material such as foamed polyethylene is disposed on the side surface of the base 31 on the indoor side. The floor beam 22 is provided with a long floor beam heat insulating material 45 so as to cover the indoor side of the floor beam 22. The floor beam heat insulating material 45 is also formed by filling a moisture-proof airtight bag 46 with a fiber heat insulating material 47 such as glass wool.

  The vertical dimension of the floor beam heat insulating material 45 is set to a length sufficient to cover the floor beam 22. Moreover, the dimension of the horizontal direction (longitudinal direction) is set to about 2 m, and the floor beams 22 are continuously covered in the horizontal direction by arranging a plurality of floor beam heat insulating materials 45 arranged in the horizontal direction. . The upper end portion of the floor beam heat insulating material 45 is bonded to the upper portion of the floor beam 22, and the lower end portion is sandwiched between the upper surface of the foundation 31 and the lower surface portion 22 a of the floor beam 22. In this state, the floor beam heat insulating material 45 is in contact with the upper end of the base heat insulating material 44, and the base heat insulating material 44 and the floor beam heat insulating material 45 form a continuous heat insulating line. The upper end of the floor beam heat insulating material 45 is in contact with the lower surface of the floor base plate 33, and forms a substantially continuous heat insulating line with the wall heat insulating material 36 disposed on the indoor side in the wall body 40. The upper end portion of the floor beam heat insulating material 45 may be bonded to a corner portion of the floor base plate 33 and the joist 32 or an indoor side surface of the joist 32.

  In addition, a large number of small holes (illustrated) for letting moisture of the fiber-based heat insulating material 47 escape outside the moisture-proof and air-tight bag 46 are provided on the indoor side surface of the moisture-proof and air-tight bag 46 that is not in contact with the foundation 31 and the floor base plate 33. Abbreviation) is provided. Thus, an airtight line extending from the upper surface of the foundation 31 to the lower surface of the floor foundation plate 33 is formed by the contact surface of the moistureproof and airtight bag 46 with the foundation 31 and the floor foundation plate 33 and the surface of the moistureproof and airtight bag 46 on the outdoor side. In addition, the moisture of the fiber-based heat insulating material 47 can be released to the outside of the moisture-proof and air-tight bag 46 from a hole provided in the moisture-proof and air-tight bag 46.

  Next, the construction method of the heat insulation structure in this embodiment is demonstrated using Fig.4 (a)-(c). First, the building unit 20 is formed. That is, the joists 32, the floor beam 25 and the ceiling beam 26 are arranged on a rectangular frame (frame) formed by the pillar 21, the floor beam 22 and the ceiling beam 23. Then, the floor base plate 33, the inner wall base 39, and the outer wall 41 are disposed, and the wall heat insulating material 36 is disposed in the wall body 40.

  Next, the upper end portion of the floor beam heat insulating material 45 is bonded to the upper portion of the floor beam 22. Further, the lower end portion of the floor beam heat insulating material 45 is held at the tip of the heat insulating material arranging jig 51, and the heat insulating material arranging jig 51 is temporarily fixed to the lower portion of the floor beam 22 (see FIG. 4A). . As described above, the floor beam heat insulating material 45 has an elongated shape, and the floor beam heat insulating material 45 is held by the heat insulating material disposing jig 51 in the center and both ends in the longitudinal direction of the floor beam heat insulating material 45. In That is, in this embodiment, since the length of the floor beam heat insulating material 45 in the longitudinal direction is about 2 m, it is held at a total of three locations at intervals of about 1 m.

  FIG. 5 is a perspective view showing the heat insulating material arranging jig 51. The heat insulating material arranging jig 51 is formed in a long shape with a metal plate material, and is formed to have a length of about 20 cm in this embodiment. A double-sided tape 54 for holding the floor beam heat insulating material 45 is attached to the upper surface of one end of the heat insulating material arranging jig 51. This double-sided tape 54 has a relatively weak adhesive strength. Then, by moving the heat insulating material disposing jig 51 in a direction to separate the lower end portion of the floor beam heat insulating material 45 from the heat insulating material disposing jig 51, the floor beam heat insulating material 45 by the heat insulating material disposing jig 51 is moved. The holding state is easily released. At the other end of the heat insulating material arranging jig 51, a pulling portion 55 is formed by folding back an end portion and projecting in an arc shape on the upper surface side. The protruding height of the puller portion 55 upward is higher than the gap height between the upper surface of the foundation 31 and the lower surface portion 22a of the floor beam 22. In addition, a clip portion 53 is formed at substantially the center of the heat insulating material arranging jig 51.

  The clip portion 53 is formed by curving a portion bent upward at an end portion of a U-shaped cut put in a plate material forming the heat insulating material arranging jig 51. The clip portion 53 can be elastically deformed in the opening direction (the direction away from the upper surface of the heat insulating material arranging jig 51), and is configured so that the urging force acts in the closing direction. The end portion 58 of the curved portion 57 extends in an angular direction away from the upper surface of the heat insulating material disposing jig 51, and the object to be sandwiched can be easily inserted into the clip portion 53 from the end portion 58 side. Further, the height of the clip portion 53 in a natural state (a state in which the clipped portion 53 is not sandwiched) is lower than the gap height between the upper surface of the foundation 31 and the lower surface portion 22a of the floor beam 22. .

  The heat insulating material arranging jig 51 is temporarily fixed by sandwiching the lower surface portion 22a of the floor beam 22 having a U-shaped cross section with the clip portion 53 from the opening side. In this state, one end (the double-sided tape 54 side) of the heat insulating material placement jig 51 is located on the indoor side of the floor beam 22, and the other end (the pulling portion 55 side) is on the outdoor side of the floor beam 22. positioned. The building unit 20 is manufactured in the above state in a factory. And in the construction site of a building, as shown to Fig.4 (a), the building unit 20 of the said state is installed in the foundation 31 from upper direction.

  Next, the temporary fixing of the heat insulating material disposing jig 51 to the lower surface portion 22a of the floor beam 22 is released, and the heat insulating material disposing jig 51 is moved from the outdoor side to the outdoor side. Is pulled into the gap between the upper surface of the foundation 31 and the lower surface portion 22 a of the floor beam 22. That is, the handle part 55 of the heat insulator placement jig 51 is held from the outdoor side, and is moved indoors (in the direction of arrow (1) in FIG. 4B). And the engagement of the clip part 53 and the lower surface part 22a of the floor beam 22 is released, and the temporarily fixed state of both is released. After releasing the engagement between the clip portion 53 and the floor beam 22, the heat insulating material placement jig 51 is illustrated so as to pass the gap between the upper surface of the foundation 31 and the lower surface portion 22 a of the floor beam 22 through the clip portion 53. 4 (b) is moved in the direction of the arrow (2), and one end of the heat insulating material arranging jig 51 is drawn into the gap between the upper surface of the foundation 31 and the lower surface portion 22a of the floor beam 22. As a result, the lower end portion of the floor beam heat insulating material 45 is drawn into the gap between the upper surface of the foundation 31 and the lower surface portion 22a of the floor beam 22. Then, the heat insulating material placement jig 51 is further moved from this state in the direction of the arrow (2) in FIG. The holding state of the material 45 is released.

  As a result, as shown in FIG. 4C, the upper end portion of the floor beam heat insulating material 45 is fixed to the upper portion of the floor beam 22, and the lower end portion is disposed between the upper surface of the foundation 31 and the floor beam 22. The floor beam heat insulating material 45 covers the indoor side of the floor beam 22. Moreover, in the said state, the floor beam heat insulating material 45 is contacting the upper part of the foundation heat insulating material 44, and the foundation heat insulating material 44 and the floor beam heat insulating material 45 will be arrange | positioned continuously.

  According to the embodiment described above in detail, the following excellent effects can be obtained.

  In the present embodiment, the floor beam heat insulating material 45 is disposed so as to cover the indoor side of the floor beam 22 disposed along the upper surface of the foundation 31. For this reason, a heat insulating material will also be arrange | positioned also in the part of the floor beam 22 located between the basic heat insulating material 44 and the wall heat insulating material 36, and the part of the floor beam 22 becomes a heat bridge, and the unit type building 10 is provided. It is suppressed that heat insulation property deteriorates.

  In the present embodiment, the base heat insulating material 44 is disposed on the side surface on the indoor side of the base 31. Therefore, it is possible to reduce the risk that white ants will enter from the outside by forming an ant path in the basic heat insulating material 44.

  In the present embodiment, the base heat insulating material 44 is disposed on the side surface on the indoor side of the base 31, and the wall heat insulating material 36 is also disposed on the indoor side in the wall body 40. Therefore, by arranging the floor beam heat insulating material 45 at a position covering the indoor side of the floor beam 22, it is possible to form a substantially continuous heat insulation line with the three members. As a result, it becomes possible to improve the heat insulation of the unit type building 10, and to improve comfort and energy efficiency.

  In particular, in this embodiment, the upper part of the basic heat insulating material 44 and the lower part of the floor beam heat insulating material 45 are in contact with each other to form a continuous heat insulating line. Thereby, since the continuous heat insulation line can be formed in the part with comparatively large heat conductivity like the reinforced concrete foundation 31 and the steel floor beam 22, it becomes possible to improve the heat insulation of this part.

  In the present embodiment, an airtight line extending from the upper surface of the foundation 31 to the lower surface of the floor base plate 33 is formed. Thereby, both a heat insulation line and an airtight line are formed in the position which covers the floor beam 22, and it becomes possible to improve the comfort and energy efficiency of the unit type building 10 more. In particular, in this embodiment, the airtight line is formed by a moisture-proof and airtight bag 46 filled with a fiber-based heat insulating material 47. For this reason, both a heat insulation line and an airtight line can be formed in one process which arrange | positions the floor beam heat insulating material 45, and the increase in the total operation time which forms a heat insulation line and an airtight line can be suppressed.

  In the present embodiment, by using the heat insulating material disposing jig 51, the operation of disposing the lower end portion of the floor beam heat insulating material 45 between the upper surface of the foundation 31 and the lower surface portion 22a of the floor beam 22 from the outdoor side. Can be done. Therefore, even when the floor foundation plate 33 is already disposed on the floor beam 22 at the time of placing the floor beam 22 on the foundation 31 as in the unit type building 10, the work in the narrow underfloor space is performed. It is possible to dispose the lower end portion of the floor beam heat insulating material 45 between the foundation 31 and the lower surface portion 22a of the floor beam 22 without performing the above. This makes it possible to easily and efficiently perform the operation of disposing the lower end portion of the floor beam heat insulating material 45 between the foundation 31 and the lower surface portion 22a of the floor beam 22. In addition, work in a narrow underfloor space is not necessary, so work safety is improved.

  In the present embodiment, the lower end portion of the floor beam heat insulating material 45 is held at one end of the heat insulating material disposing jig 51. For this reason, the lower end part of the floor beam heat insulating material 45 can be moved according to the movement by moving the heat insulating material arranging jig 51. As a result, it becomes easy to draw the floor beam heat insulating material 45 between the upper surface of the foundation 31 and the lower surface portion 22a of the floor beam 22 by work from the outdoor side. The floor beam heat insulating material 45 is held by one end of the heat insulating material disposing jig 51 with a double-sided tape 54. For this reason, the floor beam heat insulating material 45 can be held with a simple configuration. Further, by moving the heat insulating material disposing jig 51 in a direction to separate the lower end portion of the floor beam heat insulating material 45 from the heat insulating material disposing jig 51, the floor beam heat insulating material 45 by the heat insulating material disposing jig 51 is moved. The holding state can be easily solved.

  In the present embodiment, the floor beam heat insulating material 45 is held by the heat insulating material arranging jig 51 at the center and both ends of the floor beam heat insulating material 45 in the longitudinal direction. Thereby, it becomes possible to arrange | position the lower end part of the floor beam heat insulating material 45 in the clearance gap between the upper surface of the foundation 31, and the lower surface part 22a of the floor beam 22 over the whole elongate direction. In the present embodiment, a floor heat insulating material 45 in which a moisture insulating airtight bag 46 is filled with a fiber heat insulating material 47 such as glass wool is used. Since the fiber-based heat insulating material 47 is flexible, it is easy to draw the lower end portion of the floor beam heat insulating material 45 between the upper surface of the foundation 31 and the lower surface portion 22a of the floor beam 22 while deforming the floor beam heat insulating material 45. It becomes. Even when there is some variation in the distance between the upper surface of the foundation 31 and the lower surface portion 22a of the floor beam 22, it is easy to draw the lower end portion of the floor beam heat insulating material 45 into the gap.

  The pulling portion 55 formed at the end portion of the heat insulating material arranging jig 51 is formed such that the upward projecting height is larger than the distance between the upper surface of the foundation 31 and the lower surface portion 22 a of the floor beam 22. . For this reason, in the case of the operation | work using the heat insulating material arrangement | positioning jig | tool 51, it can suppress that the whole heat insulating material arrangement | positioning jig | tool 51 enters into an indoor side accidentally from between the foundation 31 and the floor beam 22. FIG. .

  In the above embodiment, the clip portion 53 is provided on the heat insulating material disposing jig 51. And the heat insulating material arrangement | positioning jig | tool 51 of the state which hold | maintained the floor beam heat insulating material 45 at the end was temporarily fixed by pinching the lower surface part 22a of the floor beam 22 with the clip part 53. FIG. Thereby, when the building unit 20 manufactured in the factory is transported to the construction site or when the building unit 20 is installed on the foundation 31, the insulation material placement jig 51 and the floor beam insulation are against the operator's intention. It is possible to prevent the material 45 from moving and obstructing the work. Further, by adopting the configuration of the clip portion 53, the floor of the heat insulating material disposing jig 51 is only moved when the heat insulating material disposing jig 51 is moved in a specific direction (in the above embodiment, the indoor side direction). It becomes possible to release the temporarily fixed state with respect to the beam 22. Thereby, both temporarily fixed states can be stabilized.

  In order to arrange the lower end portion of the floor beam heat insulating material 45 between the upper surface of the foundation 31 and the lower surface portion 22a of the floor beam 22 as in the above embodiment, the lower end portion of the floor beam heat insulating material 45 is previously placed on the floor. It is also conceivable to attach to the lower side surface of the lower surface portion 22a of the beam 22. However, when the lower end portion of the floor beam heat insulating material 45 is attached to the lower surface portion 22a of the floor beam 22 in advance, the lower end portion of the floor beam heat insulating material 45 becomes another member (for example, a track) when the building unit 20 is transported. There is a risk that the moisture-proof and airtight bag 46 of the floor beam heat insulating material 45 may be damaged. In this regard, in the above embodiment, the lower end portion of the floor beam heat insulating material 45 is held on the upper surface of the heat insulating material arranging jig 51. Therefore, the floor beam heat insulating material 45 is prevented from coming into contact with other members until the lower end portion of the floor beam heat insulating material 45 is disposed between the foundation 31 and the floor beam 22 at the construction site. As a result, the moisture-proof and air-tight bag 46 of the floor beam heat insulating material 45 can be prevented from being damaged.

  The heat insulating material arranging jig 51 is separated from the unit building 10 after the step of disposing the lower end portion of the floor beam heat insulating material 45 between the foundation 31 and the floor beam 22, Must not. For this reason, it is possible to collect | recover the heat insulating material arrangement | positioning jig | tool 51 after the said process, and to reuse when constructing another unit type building 10. FIG.

  In addition, this invention is not limited to the content of description of the said embodiment, For example, you may implement as follows.

  In the above embodiment, the structure and the construction method of covering the indoor side of the floor beam 22 of the first floor portion with the floor beam heat insulating material 45 have been described, but the same structure and construction method are also applied to the floor beam 22 of the second floor portion. it can. That is, the building unit 20 constituting the second floor portion of the unit type building 10 is installed on the building unit 20 constituting the first floor portion. At this time, a predetermined gap is formed between the ceiling beam 23 of the building unit 20 on the first floor and the floor beam 22 of the building unit 20 on the second floor. Therefore, if the floor beam heat insulating material 45 is disposed so as to cover the indoor side of the floor beam 22 in the building unit 20 on the second floor and the lower end portion thereof is disposed in the gap, the floor beam is similar to the above embodiment. It can suppress that 22 becomes a heat bridge. Moreover, the lower end part of the floor beam heat insulating material 45 can also be arrange | positioned in the said clearance gap from the outdoor side by the method similar to the said embodiment. Furthermore, if a heat insulating material similar to the floor beam heat insulating material 45 is provided on the indoor side of the ceiling beam 23 on the first floor, the heat insulating material covering the first floor ceiling beam 23 and the floor covering the second floor floor beam 22 are provided. It becomes possible to place the beam heat insulating material 45 in contact with each other. By doing in this way, it becomes possible to form the continuous heat insulation line and airtight line also in this part.

  In the above-described embodiment, the heat insulating material arranging jig 51 is provided with the clip portion 53, and the heat insulating material arranging jig 51 is temporarily fixed to the lower surface portion 22 a of the floor beam 22 by the clip portion 53. However, the heat insulating material placement jig 51 may be temporarily fixed to the lower surface portion 22 a of the floor beam 22 by means other than the clip portion 53. For example, a magnet may be fixed to the central portion of the upper surface of the heat insulating material disposing jig 51, and the heat insulating material disposing jig 51 may be temporarily fixed to the lower surface portion 22a of the steel floor beam 22 by the magnetic force of the magnet.

  In the above embodiment, the double-sided tape 54 is attached to one end of the heat insulating material arranging jig 51, and the lower end portion of the floor beam heat insulating material 45 is held by the adhesive force of the double-sided tape 54. However, the means for holding the lower end portion of the floor beam heat insulating material 45 is not limited to the double-sided tape, and other means may be used. For example, it is needless to say that other adhesive materials than the double-sided tape 54 can be used. Further, a hook portion may be provided at the tip of the heat insulating material arranging jig 51 and the lower end portion of the floor beam heat insulating material 45 may be engaged with the hook portion and held.

  In the said embodiment, although the heat insulation structure of the floor beam 22 in the unit type building 10 formed by combining several building units 20 was demonstrated, the heat insulation structure of this invention is not restricted to the unit type building 10, It can also be applied to buildings built by construction methods. Even in this case, the step of disposing the lower end portion of the floor beam heat insulating material 45 between the upper surface of the foundation 31 and the lower surface portion 22a of the floor beam 22 can be performed from the outdoor side of the building. As a result, the process of disposing the lower end portion of the floor beam heat insulating material 45 between the upper surface of the foundation 31 and the lower surface portion 22a of the floor beam 22 before and after the floor base plate 33 is disposed on the floor beam 22. Since it can be easily performed, the degree of freedom in the order of construction increases.

The figure which shows the outline | summary of a unit type building. The perspective view which shows the structure of a building unit. Sectional drawing of the vertical direction from the wall body in a building to a foundation. The figure which shows the construction procedure of a floor beam heat insulating material. The perspective view which shows a heat insulating material arrangement | positioning jig.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Unit type building, 20 ... Building unit, 21 ... Column, 22 ... Floor beam, 23 ... Ceiling beam, 25 ... Floor beam, 26 ... Ceiling beam, 31 ... Foundation, 32 ... joist, 33 ... Floor base plate, 34 ... inner wall frame, 35 ... inner wall base plate, 36 ... wall heat insulating material, 37 ... moisture-proof airtight bag, 38 ... fiber heat insulating material, 39 ... inner wall base, 40 ... wall body, 41 ... outer wall, 42 ... outer wall frame, DESCRIPTION OF SYMBOLS 43 ... Outer wall panel, 44 ... Base heat insulating material, 45 ... Floor beam heat insulating material, 46 ... Moisture-proof airtight bag, 47 ... Fiber type heat insulating material, 51 ... Heat insulating material arrangement | positioning jig | tool.

Claims (10)

A lower structure provided along a wall partitioning the inside and outside of the building, a floor beam arranged along the upper surface in a state having a predetermined gap from the upper surface of the lower structure, and the above the floor beam Applied to a building with a wall that is arranged as a wall and in which wall insulation is arranged;
It consists of a fiber-based material, and comprises a floor beam heat insulating material that covers the lower part from the upper part on the indoor side of the floor beam,
A construction method for a heat insulating structure in a building in which a lower end portion of the floor beam heat insulating material is disposed in a gap between an upper surface of the lower structure and the floor beam ,
An upper end portion of the floor beam heat insulating material arranged on the indoor side of the floor beam is attached to an upper portion of the floor beam or a member thereabove, and a lower end portion of the floor beam heat insulating material is connected to the floor beam at one end. Hold it with a heat insulator placement jig that protrudes outward,
By moving the heat insulating material placement jig from the outdoor side of the building to the outdoor side, the lower end portion of the floor beam heat insulating material is drawn into the gap between the upper surface of the lower structure and the floor beam. The construction method of the heat insulation structure in the building. The lower structure heat insulating material is disposed on the inner side surface of the lower structure, and the lower end portion of the floor beam heat insulating material is disposed in contact with the lower structure heat insulating material. The construction method of the heat insulation structure in the building of description. Covering the fibrous material with an airtight material to form the floor beam insulation,
The construction method for a heat insulating structure in a building according to claim 1 or 2, wherein an airtight line extending from an upper surface of the lower structure to an upper portion of the floor beam is formed by the airtight material. A lower structure provided along a wall partitioning the inside and outside of the building, a floor beam arranged along the upper surface in a state having a predetermined gap from the upper surface of the lower structure, and the above the floor beam Applied to a building with a wall that is arranged as a wall and in which wall insulation is arranged;
It consists of a fiber-based material, and comprises a floor beam heat insulating material that covers the lower part from the upper part on the indoor side of the floor beam,
The lower end portion of the floor beam heat insulating material is disposed in the gap between the upper surface of the lower structure and the floor beam,
Pillars, rectangular skeleton is formed by floor beams and ceiling beams, heat insulating structure to the skeleton in flooring, wall or the like building that apply to unitary building made by combining a plurality of building unit attached is The construction method of
An upper end portion of the floor beam heat insulating material arranged on the indoor side of the floor beam is attached to an upper portion of the floor beam or a member thereabove, and a lower end portion of the floor beam heat insulating material is connected to the floor beam at one end. Holding the building unit in a state in which it is held by a heat insulating material disposing jig protruding outward and the heat insulating material disposing jig is temporarily fixed to the lower part of the floor beam,
Then, the temporary fixing of the heat insulating material placement jig to the lower part of the floor beam is released,
By moving the heat insulating material placement jig from the outdoor side of the building to the outdoor side, the lower end portion of the floor beam heat insulating material is drawn into the gap between the upper surface of the lower structure and the floor beam. The construction method of the heat insulation structure in the building. Claim 4 is disposed lower structure thermal insulating material on the inner side surface of the lower structure, characterized in that the lower end of the floor beam heat insulating material is disposed in a state in contact with the lower structure thermal insulator The construction method of the heat insulation structure in the building of description. Covering the fibrous material with an airtight material to form the floor beam insulation,
The construction method for a heat insulating structure in a building according to claim 4 or 5 , wherein an airtight line extending from an upper surface of the lower structure to an upper portion of the floor beam is formed by the airtight material. A clip portion is provided in the heat insulating material disposing jig, and the heat insulating material disposing jig is temporarily fixed to a lower portion of the floor beam by engaging the clip portion with the floor beam. The construction method of the heat insulation structure in the building in any one of 4 thru | or 6 . The floor beam is formed of a steel material, a magnet is fixed to the heat insulating material disposing jig, and the heat insulating material disposing jig is temporarily fixed to a lower portion of the floor beam by a magnetic force of the magnet. The construction method of the heat insulation structure in the building in any one of Claim 4 thru | or 6 . The construction of the heat insulation structure in a building according to any one of claims 1 to 8 , wherein an adhesive portion is provided in the heat insulating material arranging jig, and the lower end portion of the floor beam heat insulating material is held by the adhesive portion. Method. The floor beam heat insulating material has a long shape extending along the floor beam,
The heat insulating structure in a building according to any one of claims 1 to 9 , wherein the floor beam heat insulating material is held by a plurality of heat insulating material arranging jigs arranged at predetermined intervals in the longitudinal direction thereof. Construction method.

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