JP6433777B2 - Basic airtight structure of building and basic airtight construction method - Google Patents

Description

  The present invention relates to a basic airtight structure of a building and a basic airtight construction method.

  The following Patent Document 1 discloses a basic heat insulating structure. Specifically, the packing is sandwiched between the foundation of the building and the foundation (floor beam), and between the foundation and the wall surface material (outer wall). Thereby, an airtight line is formed on the foundation.

JP 2003-247282 A

  However, in the basic heat insulating structure disclosed in Patent Document 1, there is no suggestion about the airtight structure in the column (outer column) portion arranged outside the building, and the airtightness between the building and the foundation is not suggested. There is a possibility that a so-called airtight line for ensuring the above is interrupted at the column portion.

  In view of the above problems, an object of the present invention is to obtain a basic airtight structure of a building and a basic airtight construction method in which an airtight line is not interrupted in an outer column of the building.

The basic airtight structure of the building according to the first aspect includes a floor girder arranged with a gap on the foundation, and arranged on the outer periphery of the building and erected on the foundation via a base plate and inside the building The outer pillar with which the floor girder is coupled to the side face of the building , and the side face of the outer pillar that is compressed between the floor girder and the foundation and has a substantially constant width in plan view, on the base plate of the outer pillar And an airtight material disposed along the line .

The basic airtight structure of the building according to the second aspect is the basic airtight structure of the building according to the first aspect, wherein the airtight material is provided opposite to the base plate and the outer column and the floor beam are used as the foundation. It is disposed between the fastening member to be fixed and the base plate.

The basic airtight structure of the building according to the third aspect is the basic airtight structure of the building according to the second aspect, wherein the airtight material is provided in the gap between the foundation and the floor beam. It is arranged by detouring.

The basic airtight structure of the building according to the fourth aspect is the basic airtight structure of the building according to the first to third aspects, in which the airtight material is disposed along the floor beams.

A basic airtight structure of a building according to a fifth aspect is the basic airtight structure of a building according to any one of the first to fourth aspects, wherein the airtight material is continuously disposed over the outer periphery of the building. ing.

The basic airtight structure of the building according to the sixth aspect is the basic airtight structure of the building according to any one of the first to fifth aspects, wherein a heat insulating material is provided in the gap between the floor beam and the foundation. The airtight material is disposed outside the building from the heat insulating material.

A foundation airtight construction method for a building according to a seventh aspect includes a floor girder arranged with a gap on the foundation, and arranged on the outer periphery of the building and standing on the foundation and coupled to the floor girder. And an airtight material that is sandwiched between the outer beam and the foundation and between the outer column and the foundation and disposed through the inside of the outer column in plan view. A first assembling step for applying the airtight material on the foundation in advance, a second assembling step for temporarily fixing the airtight material in an inclined state toward the inside of the building, and the outer column and the floor beam. And a third assembly step of constructing the building to be constructed on the foundation.

According to the 1st aspect, the airtight material is arrange | positioned through the building inner side of an outer pillar. Thereby, an airtight material can be compressed by the floor girder couple | bonded with the side surface inside the building of an outer pillar. In other words, when an airtight material is disposed outside the outer pillar building, the floor beams are not coupled to the side surface of the outer pillar outside the building, so the airtight material cannot be compressed and airtightness cannot be ensured. . On the other hand, in this aspect, since the hermetic material can be compressed as described above by providing the hermetic material inside the outer column, the hermeticity can be ensured even at the location where the outer column is provided. An airtight material is disposed along the side surface of the base plate (also referred to as a setting plate). That is, since the base plate serves as a guide and positioning when the airtight material is disposed, the airtight material can be disposed with high accuracy and workability when the airtight material is disposed can be improved. Thereby, workability can be improved.

According to the second aspect, the airtight member is disposed between the fastening member and the base plate. That is, it is possible to suppress the variation in the arrangement position of the airtight material by the installer by passing the airtight material between the fastening member and the base plate arranged at a predetermined position. Thereby, since the airtight material is reliably disposed at the set position, stable airtight performance can be obtained.

According to the third aspect, the hermetic material is disposed around the fastening member and the spacer, so that the airtight material can be disposed without interruption by the fastening member and the spacer. Thereby, it is possible to prevent the airtight line from being interrupted in the floor beam of the building.

According to the fourth aspect, by arranging the airtight material along the floor girder, the airtight material can be arranged using the position corresponding to the floor girder or the floor girder on the foundation as a guide. It is possible to arrange the material with high accuracy and improve workability when arranging the airtight material. Thereby, the workability can be further improved.

According to the 5th aspect, an airtight material is continuously arrange | positioned over the outer periphery of a building, and can ensure an airtight line without interrupting over the perimeter of a building. Thereby, airtight performance is securable in the perimeter of a building.

According to the sixth aspect, since the heat insulating material is provided between the floor beam and the foundation, heat conduction between the inside and the outside of the building is suppressed, and the heat insulating property of the building can be improved. . In addition, since an airtight material is disposed outside the building from the heat insulating material, the airtight material becomes a waterproofing member so that rainwater and the like can be prevented from entering the heat insulating material. Therefore, generation | occurrence | production of the mold of a heat insulating material can be suppressed. Thereby, the performance fall of a heat insulating material can be suppressed.

According to the seventh aspect, when a building including an outer column and a floor girder is installed on the foundation, the building suspended by a crane or the like is lowered down along the vertical direction and installed on the foundation. The Therefore, by temporarily fixing the airtight material in an inclined state to the inside of the building in advance, it is possible to prevent the airtight material from interfering with the movement trajectory of the building when it is installed on the foundation. The airtight material can be prevented from being crushed between the outer pillar and the foundation. Thereby, it can arrange | position, without damaging an airtight material.

  As described above, the basic airtight structure of the building and the basic airtight construction method according to the present invention have an excellent effect that the airtight line can be prevented from being interrupted in the outer column of the building.

It is a plane sectional view showing the basic airtight structure of the building concerning one embodiment. It is an expanded sectional view which shows the state cut | disconnected along the AA line in FIG. (A) is an enlarged plan view which shows the Z section in FIG. 1, (B) is an expanded sectional view which shows the state cut | disconnected along the BB line in (A). (A) is an enlarged plan view which shows the Y section in FIG. 1, (B) is an expanded sectional view which shows the state cut | disconnected along CC line in (A). It is an enlarged plan view which shows the X section in FIG. (A) is an enlarged plan view showing a beam spacer portion and its periphery in a building having a basic airtight structure of a building according to an embodiment, and (B) is cut along a line DD in (A). It is an expanded sectional view showing a state. (A) is an enlarged plan view showing a floor large beam and a floor beam in a building having a basic airtight structure of the building according to one embodiment and its periphery, and (B) is along the line EE in (A). It is an expanded sectional view which shows the state cut | disconnected, (C) is an expanded sectional view which shows the state cut | disconnected along the FF line in (B). (A) is a schematic perspective view which shows the initial assembly state of the principal part of the basic airtight structure of the building which concerns on one Embodiment, (B) is a schematic perspective view which shows the state which attached the airtight material with respect to (A). (C) is a schematic perspective view showing a state where an airtight material is inclined and temporarily fixed with respect to (B).

  Hereinafter, an embodiment of a basic airtight structure of a building according to the present invention will be described with reference to FIGS.

  As shown in FIG. 1, a building 12 is provided on the foundation 10. As an example of this building 12, a unit building is adopted in the present embodiment, and two building units 14 and one half unit 16 having a half dimension in the short direction of the building unit 14 are connected. Is made up of.

  Although not shown, the building unit 14 has a rectangular parallelepiped shape, and outer pillars 18 (18A, 18B, 18C, 18D) are arranged at the four corners of the building unit 14. The outer column 18 is made of square steel having a square cylindrical shape in plan view. The upper ends of the outer pillars 18 of the building unit 14 are connected by four ceiling beams (not shown), and the lower ends of the outer columns 18 are connected by four floor beams 20. In addition, the ceiling beam and the floor beam 20 are formed of grooved steel having a U-shaped cross section when cut along the height direction of the building 12 (see FIG. 2).

  The half unit 16 has substantially the same configuration as the building unit 14. That is, although not shown, it has a rectangular parallelepiped shape, and outer pillars 22 (22A, 22B, 22C, 22D) are arranged at the four corners of the half unit 16. The outer pillar 22 has the same size and configuration as the outer pillar 18. That is, it is formed of square steel having a square cylindrical shape in plan view. In addition, the upper end portions of the outer columns 22 of the half unit 16 are connected by four ceiling beams (not shown), and the lower ends of the outer columns 22 are connected by four floor beams 24. Further, the ceiling beam and the floor beam 24 are formed of channel steel whose cross-sectional shape when cut along the height direction of the building 12 is U-shaped like the floor beam 20 of the building unit 14.

  In the building units 14, one floor large beam 20 along the short direction is adjacently connected. In addition, the building unit 14 and the half unit 16 include one of the two large building units 14 along the longitudinal direction of the building unit 14 and one of the floors along the longitudinal direction of the half unit 16. The girder 24 is connected adjacently. Thereby, the building 12 is formed in a substantially L shape in plan view. Moreover, the outer pillars 18 and 22 are arrange | positioned at the outer periphery of the building 12 by the structure mentioned above.

  The building 12 as described above is fixed on the foundation 10. As shown in FIG. 2, the foundation 10 is a reinforced concrete cloth foundation, and includes a footing portion 28 embedded in the floor foundation 26 and a rising portion 30 extending upward. It is configured. An inner heat insulating material 32 is provided on the building-side inner surface of the rising portion 30. The upper end surface 34 of the inner heat insulating material 32 is set to be substantially flush with the upper end surface 38 of the rising portion 30, that is, the upper end surface 38 of the foundation 10.

  As shown in FIG. 1, the foundation 10 is continuously provided along the entire circumference of the building 12, and the inner space surrounded by the foundation 10 is an underfloor space 40. This underfloor space 40 communicates with the outside of the building through a ventilation hole (not shown) formed in the rising portion 30.

(Outside corner configuration)
As shown in FIGS. 3A and 3B, the outer column 22 of the half unit 16 is the upper surface of the base plate 42 fixed to the upper end surface 38 of the foundation 10 (the upper end surface 38 of the rising portion 30). It is fixed to. That is, the outer column 22 of the half unit 16 (the outer column 18 of the building unit 14) is placed on the upper end surface 38 of the foundation 10 via the base plate 42. Note that the outer shape of the base plate 42 provided at the protruding corner is set to be substantially the same as the outer shape of the outer column 22 (18) or slightly larger than the outer shape.

  As shown in FIG. 3B, a beam backing metal 52 and an ear plate 54 are respectively attached to the lower ends of the side surfaces 50 of the outer pillar 22 (18) inside the building. The cross section along the vertical direction of the building is formed in a substantially inverted L shape, and the beam backing metal 52 protrudes substantially perpendicularly to the side surface 50 of the outer column 22 (18). The floor girder 24 (20) is placed at a predetermined position by bringing the inner surface of the floor girder 24 into contact with the outer surface of the beam backing metal 52.

  The ear plate 54 is formed in a substantially rectangular plate shape in a plan view, and protrudes substantially perpendicularly to the side surface 50 from below the beam backing metal 52 on the side surface 50 of the outer column 22 (18). . An anchor hole 56 penetrating in the thickness direction is formed in the ear plate 54, and the lower wall portion 60 on the lower side of the building of the floor beam 24 (20) that is in contact with the upper side surface of the ear plate 54. In addition, a through hole 58 is formed coaxially with the anchor hole 56.

  A clip nut 62 that sandwiches the ear plate 54 and the lower wall portion 60 is attached to the ear plate 54 and the lower wall portion 60 of the floor beam 24 (20). The clip nut 62 has a nut 64 as a fastening member on the upper side surface of the building, and is attached so that the nut 64 is positioned coaxially with the anchor hole 56 and the through hole 58. Then, the anchor bolt 66 as a fastening member is inserted from the lower side of the building into the anchor hole 56, the through hole 58 and the nut 64 and fastened to fasten the floor beam 24 (20) to the outer column 22 (18). ing. The anchor bolt 66 is integrally formed with an anchor portion 68 extending downward from the building, and this anchor portion 68 is inserted into an anchor hole (not shown) formed in the upper end surface 38 of the foundation 10 in advance. By doing so, the outer column 22 (18) and the floor girder 24 (20) are fixed to the foundation 10. Since the outer column 22 (18) is mounted on the upper end surface 38 of the foundation 10 via the base plate 42 as described above, the base plate 42 is interposed between the floor beam 24 (20) and the upper end surface 38. A gap 70 equivalent to the plate thickness is formed. The gap 70 is provided with a base heat insulating material 72 as a heat insulating material as shown in FIG. The heat insulating material 72 on the foundation is disposed on the inner side of the building from the airtight material 74 described later.

  An airtight material 74 is provided in a gap 70 formed between the floor beam 24 and the upper end surface 38 of the foundation 10. The airtight material 74 is formed in a rectangular parallelepiped shape made of EPDM as an example, and as shown in FIG. 3A, a first airtight material 75 provided mainly along the floor beam 24 (20), And a second airtight member 77 provided mainly along the outer column 22 (18). The 1st airtight material 75 is arrange | positioned between the building outer side in the lower wall part 60 of the floor beam 24 (20), and the upper end surface 38 of the foundation 10 along the longitudinal direction of the floor beam 24 (20) ( (See FIG. 3B).

  The 2nd airtight material 77 is comprised by the L-shaped part 76 arrange | positioned inside the building of the outer pillar 22 (18), and the linear part 78 arrange | positioned so that the 1st airtight material 75 may be followed. ing. Specifically, the L-shaped portion 76 extends along the side surface 84 on the inside of the building in the base plate 42 and passes between the anchor bolt 66 and the nut 64 and the side surface 84 and is formed in a substantially L shape in plan view. Further, both end portions 80 in the longitudinal direction of the L-shaped portion 76 are integrally coupled to the linear portion 78 on the outside of the building from the anchor bolt 66. In other words, the second airtight member 77 is bent along the longitudinal direction of one of the floor beams 24 (20) and bent toward the anchor bolt 66 side, that is, the inside of the building at a position in contact with the side surface 50 of the base plate 42. Then, the anchor bolt 66 and the nut 64 are passed between the side surface 84 and disposed along the side surface 84 in a substantially L shape in plan view, and the other floor large beam 24 is positioned with the position of the other anchor bolt 66 as a mark. It is formed so as to be bent along the longitudinal direction of (20).

  The first airtight material 75 and the second airtight material 77 are connected by a joint portion 82. In the joint portion 82, the end portion of the first airtight member 75 is bent toward the inside of the building in a so-called crank shape in a plan view. And it arrange | positions so that the edge part of the 2nd airtight material 77 may overlap with the building outer side of the edge part of the 1st airtight material 75 by planar view. That is, the end portion of the first airtight material 75 and the end portion of the second airtight material 77 are disposed so as to wrap. Thus, the airtight material 74 is continuously disposed on the upper end surface 38 of the foundation 10.

  In the present embodiment, the gap 70 has a dimension along the building vertical direction of 13 mm, and the airtight member 74 has a dimension along the building vertical direction of 25 mm. Therefore, the hermetic material 74 is disposed in the gap 70 in a compressed state. Note that the L-shaped portion 76 of the second airtight member 77 includes a portion A disposed in a lower range of the floor beam 24 along the short direction of the floor beam 24, and a portion other than the lower side of the floor beam 24. It is divided into a portion (corner portion having an L-shaped cross section) B arranged in the range. Of these, the portion B is not compressed by the floor girder 24 and thus cannot ensure airtightness. However, since the portion A is compressed, the L-shaped portion 76 is pressed against the side surface 84 of the base plate 42 by deformation due to compression. It becomes possible to ensure airtightness at the corners.

  As described above, the protruding corner portion of the Z portion in FIG. 1 has been described, but not only the Z portion but also other protruding corner portions have the same configuration as the above configuration.

(Flat joint configuration)
As shown in FIGS. 4A and 4B, the outer pillar 18 (22) of the building unit 14 is fixed to the upper surface of the base plate 44 fixed to the upper end surface 38 of the foundation 10. That is, the outer column 18 (22) of the building unit 14 is placed on the upper end surface 38 of the foundation 10 via the base plate 44. The base plate 44 provided in the flat joint is set so that one outer pillar 18 (22) and the other outer pillar 18 (22) adjacent thereto can be placed. The outer shape of the two outer pillars 18 (22) is substantially the same in plan view so as to have a size obtained by adding a gap between one outer pillar 18 (22) and the other outer pillar 18 (22). It is set to a rectangular shape.

  As shown in FIG. 4B, the adjacent outer pillars 18 are fixed to the foundation 10 through the base plate 44 with the same configuration as the above-described protruding corner. An airtight material 74 is provided in the gap 70 formed between the floor girder 20 (24) and the upper end surface 38 of the foundation 10. As shown in FIG. 4A, the airtight material 74 includes a first airtight material 75 provided along the floor beam 20 (22) and a third airtight material provided along the outer column 18 (22). 79.

  The third airtight member 79 passes along the inner side of the building of the outer column 18 (22), that is, the side 84 of the base plate 44 inside the building and passes between the anchor bolt 66 and the nut 64 and the side 88, and is substantially U in plan view. It is formed in a letter shape. Further, both end portions 86 in the longitudinal direction of the third hermetic material 79 are integrally coupled to the first hermetic material 75 outside the building from the anchor bolt 66. In other words, the first airtight material 75 is bent along the longitudinal direction of one of the large floor beams 20 (24) and bent toward the anchor bolt 66 side, that is, the inside of the building at a position in contact with the side surface 88 of the base plate 44. And it arrange | positions in the substantially U shape by planar view along the side surface 88, and it is formed so that it may be bent so that the position of the other anchor bolt 66 may follow the longitudinal direction of the other floor large beam 20. .

  In addition, since the third airtight member 79 is compressed at a portion disposed in the lower range of the floor beam 20 along the short direction of the floor beam 20, this portion is deformed by compression and the base plate 44 is deformed. By being pressed against the side surface 88, it becomes possible to ensure airtightness at the flat joint.

  The Y joint in FIG. 1 has been described above, but not only this Y part but also other flat joints have the same configuration as the above configuration.

(Contains corners)
As shown in FIG. 5, the outer column 18 of the building unit 14 and the outer column 22 of the half unit 16 are fixed to the upper surface of the building of the three base plates 46 fixed to the upper end surface 38 of the foundation 10. That is, the outer column 18 of the building unit 14 and the outer column 22 of the half unit 16 are placed on the upper end surface 38 of the foundation 10 via the base plate 46. Note that the base plate 46 provided at the corner is set so that the outer pillars 18 and 22 can be placed thereon, respectively, and therefore is substantially the same as or slightly larger than the outer shape of the outer pillars 18 and 22. Thus, the outer shape is set to a substantially square shape.

  The two outer pillars 18 and the outer pillars 22 are fixed to the foundation 10 through the base plate 46 with the same configuration as the above-described corners. In addition, an airtight material 74 is provided in the gap 70 in the same manner as the protruding corner portion. The airtight material 74 includes a first airtight material 75 provided along the floor beam 20 and a fourth airtight material 81 provided along the two outer pillars 18 and the outer pillar 22.

  The fourth airtight member 81 passes along the inside 89 of the outer column 18 and the outer column 22, that is, along the side 89 on the inside of the base plate 46 and between the anchor bolt 66 and the side 89, and is substantially in plan view. It is formed in a C shape. Further, both end portions 90 in the longitudinal direction of the fourth hermetic member 81 are integrally coupled to the first hermetic member 75 outside the building from the anchor bolt 66. In other words, the first airtight member 75 is bent along the longitudinal direction of one of the floor beams 20 (22) and bent toward the anchor bolt 66 side, that is, the inside of the building at a position in contact with the side surface 89 of the base plate 46. And it arrange | positions along the side surface 89 by substantially C shape by planar view, and it forms so that the position of the other anchor bolt 66 may be bent along the longitudinal direction of the other floor large beam 20 (22). Has been.

  In addition, the fourth airtight member 81 is compressed in the portion disposed in the lower range of the floor beam 20 along the short direction of the floor beams 20 and 22. By being pressed against the side surface 89 of 46, it becomes possible to ensure the airtightness in the corner.

(Beam spacer configuration)
As shown in FIGS. 6A and 6B, a gap 70 formed between the floor girder 20 (24) and the upper end surface 38 of the foundation 10 has a beam as a spacer for supporting the floor girder 20. A spacer 92 is provided at a predetermined position. The beam spacer 92 is formed in a substantially square shape in plan view, and is disposed outside the building in the lower wall portion 60 of the floor beam 20.

  In addition, an airtight material 74 is provided in the gap 70. The airtight material 74 includes a first airtight material 75 provided along the floor large beam 20 (24) and a fifth airtight material 83 provided along the beam spacer 92.

  The fifth hermetic member 83 is formed in a substantially U shape in plan view along the side surface 94 of the beam spacer 92. Further, both end portions 96 in the longitudinal direction of the fifth airtight member 83 are integrally coupled to the first airtight member 75. In other words, the first airtight member 75 disposed along the longitudinal direction of the floor beam 20 (24) is bent toward the inside of the building at a position where it abuts against the side surface 94 of the beam spacer 92. And it arrange | positions in the substantially U shape by planar view along the side surface 94, and is bent again along the longitudinal direction of the floor large beam 20 (24). That is, the hermetic material 74 is disposed around the beam spacer 92.

  Further, the entire fifth airtight member 83 is compressed by the floor girder 20. Therefore, the fifth hermetic member 83 is pressed against the side surface 94 of the beam spacer 92 by deformation due to compression, so that the airtightness in the beam spacer portion can be improved.

(Construction of beam)
As shown in FIGS. 7A and 7B, the small beam 100 is attached to the large floor beam 20 (24) via the small beam bracket 98. The small beams 100 are formed in a rectangular tube shape with the short direction of the building unit 14 and the half unit 16 as the long direction, and a plurality of the small beams 100 are provided at predetermined intervals along the long direction of the building unit 14 and the half unit 16. ing.

  The cross beam bracket 98 has a substantially U-shaped cross section, and is attached to the floor girder 20 (24) so as to be accommodated in the cross section of the floor girder 20 (24) in the vertical direction of the building. The small beam 100 is fixed to the floor large beam 20 by connecting the side surface 102 of the small beam bracket 98 and the side surface 104 of the small beam 100 respectively. An anchor hole 106 penetrating in the thickness direction is formed between one side surface 102 and the other side surface 102 of the small beam bracket 98 in the lower wall portion 60 of the floor girder 20 (24). The anchor bolt 66 is inserted into the anchor hole 106 and fastened to the nut 108, and the anchor portion 68 of the anchor bolt 66 is inserted into an anchor hole (not shown) provided in the foundation 10. It is fixed.

  In addition, an airtight material 74 is provided in the gap 70. As shown in FIG. 7C, the airtight material 74 is formed along the longitudinal direction of the floor beam 20 (24) and the building outer side portion of the lower wall portion 60 of the floor beam 20 (24) and the upper end surface 38 of the foundation 10. It is arranged between. That is, the airtight material 74 is disposed at a position avoiding the anchor bolt 66. In the above description, the airtight member 74 has been described so as to avoid the anchor bolt 66 at the position where the small beam bracket 98 is provided. However, the present invention is not limited to this, and the position where the small beam bracket 98 is not provided. As with the anchor bolts 66 provided, the airtight material 74 is disposed avoiding this.

  With the above configuration, the airtight member 74 is continuously disposed along the base plates 42, 44, 46 and the floor beams 20, 24 in the building 12 without interruption.

  As shown in FIGS. 3B and 7C, outer wall panels 110 constituting a part of the building unit 14 and the half unit 16 are attached to the outer peripheries of the building unit 14 and the half unit 16, respectively. . The outer wall panel 110 includes, as an example, an outer wall frame 112 formed of lightweight channel steel and an outer wall material 114 joined to the outside of the building of the outer wall frame 112. The outer wall frame 112 is used as a vertical wall of the floor beam 20. The outer wall panel 110 is provided on the outer side of the building of the outer pillars 18 and 22 and the floor beams 20 and 24 by being coupled to the building outer surface of the part 61.

  Next, with reference to FIG. 8, a method for arranging the above-described airtight member 74 will be described taking the protruding corner as an example.

  As shown in FIG. 8A, the base plate 42 is placed on the upper end surface 38 of the foundation 10 before the building unit 14 and the half unit 16 are installed. Then, after removing dirt, moisture, and the like from the upper end surface 38 of the foundation 10, an airtight material 74 is attached to a predetermined position on the upper end surface 38 of the foundation 10 as shown in FIG. 8B. Specifically, along the position corresponding to the floor beams 20 and 24 of the building unit 14 and the half unit 16 to be placed on the foundation 10 in a later process, the base plate 42 is attached along the side surface 84 inside the building. wear. A double-sided tape is provided in advance on the surface of the airtight member 74 that contacts the upper end surface 38 of the foundation 10. As a result, the airtight member 74 can be prevented from moving or overturning when the building unit 14 and the half unit 16 are placed. This process corresponds to the “first assembly process” described in claim 8.

  As shown in FIG. 8C, the airtight material 74 at the site along the side surface 84 of the base plate 42 is temporarily fixed with the curing tape 116 in a state of being inclined toward the inside of the building. Specifically, one end portion of the curing tape 116 is affixed to the upper surface of the building of the airtight material 74, and the other end portion is affixed to the upper end surface 38 of the foundation 10 while being pulled inside the building. As a result, the airtight material 74 is held in a state in which the surface contacting the upper end surface 38 is fixed to the upper end surface 38 by the double-sided tape and the building upper surface is deformed so as to fall down to the inside of the building. This process corresponds to a “second assembly process” described in claim 8.

  Thereafter, the building unit 14 and the half unit 16 transported from the factory to the site and lifted by a crane or the like are placed on the foundation 10 so that the outer pillars 18 and 22 are positioned on the base plate 42. At this time, since the airtight member 74 is tilted to the inside of the building and temporarily fixed, it is away from the movement trajectory of the building unit 14 and the half unit 16 that are lowered downward along the vertical direction. When the 14 and the half unit 16 are placed on the foundation 10, the airtight material 74 can be prevented from being crushed by being sandwiched between the base plate 42 and the outer pillars 18 and 22. The airtight member 74 is compressed by the large floor beams 20 and 24 of the building unit 14 and the half unit 16 placed thereon, so that the inclined airtight member 74 is deformed so as to be pressed against the side surface 84 of the base plate 42. That is, since it deform | transforms so that the clearance gap formed by the upper end surface 38 of the foundation 10, the floor beams 20 and 24, and the side surface 84 of the baseplate 42 may be filled, it becomes possible to ensure airtightness.

  The method for arranging the airtight material 74 has been described above by taking the protruding corner portion as an example, but the airtight material 74 is also arranged in the same process at the flat joint portion, the entering corner portion, the beam spacer portion, and the like.

  Next, the operation and effect of this embodiment will be described.

  As shown in FIG. 1, according to the present invention, an airtight material 74 is disposed through the inside of the building of the outer pillars 18 and 22. Thereby, the airtight material 74 can be compressed by the floor beams 20, 24 coupled to the side surfaces 50 of the outer pillars 18, 22 inside the building. That is, when the airtight material 74 is disposed outside the building of the outer pillars 18 and 22, the floor beams 20 and 24 are not coupled to the side surfaces of the outer pillars 18 and 22 outside the building, so the airtight material 74 is compressed. It is not possible to ensure airtightness. On the other hand, in this embodiment, since the airtight material 74 can be compressed as described above by providing the airtight material 74 inside the outer columns 18 and 22, the airtight material 74 can be compressed even at the location where the outer columns 18 and 22 are provided. Sex can be secured. Thereby, an airtight line can be prevented from being interrupted in the outer column 18 of the building 12.

  An airtight member 74 is disposed along the side surfaces 84, 88, 89 of the base plates 42, 44, 46. That is, since the base plates 42, 44, and 46 serve as a guide and positioning when the airtight material 74 is disposed, the airtight material 74 can be disposed with high accuracy and workability when the airtight material 74 is disposed is improved. Can do. Thereby, workability can be improved.

  Further, an airtight member 74 is disposed between the anchor bolt 66 and the nut 64 and the base plates 42, 44, 46. That is, by passing the airtight material 74 between the anchor bolt 66 and the nut 64 arranged at a predetermined position and the base plates 42, 44, 46, it is possible to suppress variations in the arrangement position of the airtight material 74 by the installer. it can. Thereby, since the airtight material 74 is reliably arrange | positioned in the set position, the stable airtight performance can be obtained.

  Furthermore, the hermetic material 74 is disposed around the anchor bolt 66, the nut 64, and the beam spacer 92 so that the hermetic material 74 is disposed without interruption by the anchor bolt 66, the nut 64, and the beam spacer 92. Can do. Thereby, it is possible to prevent the airtight line from being interrupted in the floor beams 20 and 24 of the building.

  Further, by arranging the airtight material 74 along the floor large beams 20 and 24, the airtight material 74 is disposed using the positions corresponding to the floor large beams 20 and 24 and the floor large beams 20 and 24 on the foundation 10 as a guide. Therefore, it is possible to arrange the airtight material 74 with high accuracy and improve workability when arranging the airtight material 74. Thereby, the workability can be further improved.

  Furthermore, the airtight material 74 is continuously disposed along the base plates 42, 44, 46 and the floor beams 20, 24, so that the airtight line can be secured without being interrupted over the entire circumference of the building. Thereby, airtight performance can be ensured in the entire periphery of the building 12.

  Furthermore, the heat insulation between the inside and the outside of the building 12 is suppressed and the heat insulating property of the building 12 is improved by providing the heat insulating material 72 on the foundation between the floor beams 20 and 24 and the foundation 10. Can be made. In addition, since the airtight material 74 is disposed outside the foundation heat insulating material 72 outside the building, the airtight material 74 becomes a waterproof member to suppress the intrusion of rainwater or the like into the basic heat insulating material 72. it can. Therefore, generation | occurrence | production of the mold of the heat insulating material 72 on a foundation can be suppressed. Thereby, the performance fall of the heat insulating material 72 on a foundation can be suppressed.

  Moreover, when installing the building 12 comprised including the outer pillars 18 and 22 and the floor beams 20 and 24 on the foundation 10, the building 12 hung with the crane etc. is lowered | hung down along a perpendicular direction, and the foundation 10 is taken. Installed on top. Therefore, by temporarily fixing the airtight material 74 in a state inclined in advance to the inside of the building, it is possible to prevent the airtight material 74 from interfering with the movement path of the building 12 when the building 12 is installed on the foundation 10. The airtight material 74 can be prevented from being crushed between the outer pillars 18 and 22 erected on the base 10 and the foundation 10. Thereby, the airtight material 74 can be disposed without being damaged.

  In the present embodiment, the hermetic material 74 is made of EPDM, but is not limited thereto, and may be made of another material having flexibility.

  The embodiment of the present invention has been described above, but the present invention is not limited to the above, and various modifications other than those described above can be implemented without departing from the spirit of the present invention. Of course.

10 foundation 18 outer column 20 floor beam 22 outer column 24 floor beam 42 base plate 44 base plate 46 base plate 50 side surface 64 nut (fastening member)
66 Anchor bolt (fastening member)
70 Gap 72 Heat insulating material on base (heat insulating material)
74 Airtight material 84 Side surface 88 Side surface 92 Beam spacer (spacer)
94 side

Claims (7)

A floor girder arranged with a gap on the foundation;
An outer column which is arranged on the outer periphery of the building and is erected on the foundation via a base plate, and the floor girder is coupled to the side surface inside the building;
An airtight material that is compressed between the floor beam and the foundation and has a substantially constant width in a plan view, and is disposed along the side surface of the outer column on the base plate inside the building,
The basic airtight structure of buildings. The airtight member is provided to face the base plate and is disposed between the base plate and a fastening member that fixes the outer column and the floor beam to the foundation.
The basic airtight structure of a building according to claim 1 . The airtight material is disposed around the fastening member and spacer provided in the gap between the foundation and the floor beam.
The basic airtight structure of a building according to claim 2 . The airtight material is disposed along the floor beam.
The basic airtight structure of a building according to any one of claims 1 to 3 . The airtight material is continuously arranged over the outer periphery of the building,
The basic airtight structure of a building according to any one of claims 1 to 4 . A heat insulating material is arranged in the gap between the floor beam and the foundation, and the airtight material is arranged outside the building from the heat insulating material,
The building's basic airtight structure according to any one of claims 1 to 5 . A floor girder arranged with a gap on the foundation;
An outer column arranged on the outer periphery of the building and standing on the foundation and coupled to the floor girder,
An airtight material that is sandwiched between the floor beam and the outer pillar and the foundation and is disposed through the inside of the outer pillar in a plan view;
Applied to buildings with
A first assembly step of attaching the airtight material on the foundation in advance, a second assembly step of temporarily fixing the airtight material in an inclined state toward the inside of the building, and the outer pillar and the floor beam are included. A third assembly step of constructing the building on the foundation,
Basic airtight construction method for buildings.

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