JP2012241341A - Building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a unit-type building including earthen floor space that allows improvement in thermal insulation performance of the earthen floor space.SOLUTION: A building 10 comprises: a plurality of building units spaced apart from each other; and a floor unit 30 disposed between these building units. The floor unit 30 has four sides formed by floor unit girders 33 coupled to each other. At the position where the floor unit 30 is installed, earthen floor space 19 is provided. The earthen floor space 19 is surrounded by a floor unit girder 33 and a floor unit beam 34a included in the floor unit 30, and is provided with an earthen floor surface 53 formed below the top surface of each of floor beams 33 and 34a. An outer wall portion 47 partitioning the earthen floor space 19 from the outdoors is provided with an inner wall panel 71 having an inner wall surface material 72 and a wall thermal insulation material 73. The wall thermal insulation material 73 extends to the level below the top surface of the floor unit girder 33 on the earthen floor space 19 side with respect to the girder 33, and covers a portion of the girder 33 that is located above the earthen floor surface 53.

Description

  The present invention relates to a building.

  As a building such as a house, a unit type building constructed by connecting a plurality of building units is known (for example, see Patent Document 1). The building unit is formed in a substantially rectangular parallelepiped shape as a whole, and includes four columns arranged at the four corners, and four ceiling beams and floor beams that connect the upper and lower ends of each column. It is constructed by attaching a wall, ceiling, floor or the like to the frame.

  Attached to such a unit type building, equipment such as a hot water supply device and a hot water storage tank for storing hot water boiled by the hot water supply device may be installed. Such equipment is generally installed adjacent to a building outdoors. However, in cold districts, when equipment is installed outdoors, problems such as reduced performance (decreased performance) may occur. For example, when a hot water storage tank is installed outdoors, problems such as a rapid decrease in hot water temperature or excessive energy required to maintain the hot water temperature at a desired temperature may occur. Therefore, in cold districts, equipment may be installed in a building, specifically in a building unit, to avoid such a problem.

  Here, when installing the equipment in the building unit, it is conceivable to install the equipment in the dirt space formed in the building unit. The floor space is usually set below the floor height of a living space such as a living room. Specifically, on the floor of a building unit, a plurality of floor beams are bridged between a pair of opposing floor beams, and the floor material of the living room space is placed on the floor beams and the floor beams. Although it becomes the structure supported, the floor surface of soil space will be formed below the upper surface of those floor beams and floor beams. Therefore, for example, the soil space is considered to be formed in a state in which a part (lower part) enters the inside surrounded by the floor large beam and the floor small beam.

JP-A-6-42052

  By the way, with the above-described configuration, there is a concern that the large floor beams and the small floor beams surrounding the soil space become a thermal bridge, and the heat in the soil space leaks to the outside of the soil space. For example, when the dirt space is provided separated from the outside by the outer wall part of the building unit, the floor beam provided at the lower part of the outer wall part is arranged at the boundary part between the dirt space and the outdoors. It is assumed that the floor girder becomes a thermal bridge and the heat in the dirt space leaks to the outside. Therefore, with the above configuration, it is considered difficult to ensure the heat insulation performance of the dirt space, and even if a hot water storage tank is installed in the dirt space, especially in cold regions, it seems difficult to avoid a decrease in the hot water temperature. It is.

  This invention is made | formed in view of the said situation, and it aims at providing the building which can aim at the improvement of the heat insulation performance of a dirt space in a unit type building provided with a dirt space. .

  In order to solve the above-described problem, the building of the first invention includes a unit structure having a floor portion in which a large floor beam is connected to four sides, and is constructed by connecting a plurality of the unit structures, It is a unit type building having an interstitial space as an indoor space, and the interstice space is surrounded by a plurality of interstitial floor beams that the floor of the unit structure has, and the interstices that are the floor surface The surface is formed below the upper surface of the soil-enclosed floor beam, and covers the upper part of the soil-enclosed floor beam from the soil space side above the soil-floor floor surface, or the soil-enclosed floor beam A floor-beam heat insulating material is provided along the soil-enclosed floor beam so as to cover the entire vertical height of the soil-enclosed floor beam from the side opposite to the inter-space between the soil.

  According to the present invention, the floor beam heat insulating material is provided along the dirt fenced floor beam surrounding the dirt space. This floor beam heat insulating material is provided so as to cover the part above the soil floor surface of the soil fence floor beam from the soil space side, or between the soil with the entire height of the soil fence floor beam sandwiched between the floor beams. It is provided so as to cover from a space opposite to the space (hereinafter referred to as a space outside the soil). Therefore, it is possible to suppress the heat in the soil space from leaking into the space outside the soil as the soil fence floor beam becomes a thermal bridge. Thereby, the heat insulation performance of the dirt space can be improved. Here, examples of the outer space include an outdoor space and an under-floor space of an indoor space (adjacent space) provided adjacent to the soil space.

  In addition, it is desirable to provide a floor beam heat insulating material for each of the plurality of soil-enclosed floor beams that surround the soil space. If it does so, since it can suppress that each soil floor floor beam becomes a thermal bridge, the heat insulation effect of soil space can be improved notably.

  In the building of the second invention, in the first invention, the dirt space is partitioned from the outside by an outer wall portion, and the large floor beam is provided as a dirt-enclosed floor beam along the outer wall portion, and the outer wall portion is An inner wall panel having an inner wall surface material and a wall heat insulating material provided on the back side thereof is provided on the soil space side, and the inner wall surface material and the wall heat insulating material are on the soil space side of the floor beam. A portion extending below the upper surface of the floor girder and overlapping with the floor girder in the height direction in the wall heat insulating material is the floor beam heat insulating material.

  In a configuration where the dirt space is separated from the outside by the outer wall, the floor girder installed along the outer wall is arranged as a dirt-enclosed floor beam between the outdoors and the dirt space. It is considered that the heat in the soil space leaks to the outdoor side, and the heat insulation performance of the soil space is greatly reduced. In particular, in the case of cold districts, there is a concern that the heat insulation performance of the interstitial space is significantly reduced. In this regard, in the present invention, an inner wall panel is provided on the side of the dirt space in the outer wall portion, and the wall heat insulating material possessed by the inner wall panel extends below the upper surface of the floor girder on the side of the dirt space from the floor girder. The floor beam heat insulating material covers the floor beam from the dirt space side. Therefore, it is possible to suppress the leakage of the heat in the dirt space to the outdoors by the large beam on the floor serving as a thermal bridge. In addition, since the floor beam is covered with a part of the wall insulation, the floor beam and the outer wall can be continuously covered with the wall insulation on the soil space side of the floor beam, and as a result, the floor beam It is possible to prevent the heat in the soil space from leaking out of the floor girder such as the boundary between the outer wall and the outer wall. Therefore, in this case, the heat insulation performance of the dirt space can be enhanced.

  In addition, if the outer wall has a structure that has an in-wall heat insulating material provided in parallel with the wall heat insulating material, a double heat insulating structure of the inner heat insulating material and the wall heat insulating material is constructed in the outer wall portion. Since it can do, the heat insulation performance of an outer wall part can be improved.

  A building of a third invention is the first or second invention, wherein the indoor space is a space adjacent to the soil that is provided adjacent to the space between the soil, and a floor surface is formed at a position higher than the floor surface of the soil. The interstitial floor beams are disposed along a boundary portion between the underfloor space and the interstitial space of the adjacent space between the soils, and the floor beam heat insulating material is provided along the interstitial floor beams. It is characterized by that.

  When the floor surface of the interstitial space is formed at a position lower than the floor surface of the interstitial adjacent space adjacent to the interstitial space, the interstitial enclosure floor beam is along the boundary between the interstitial space and the underfloor space of the interstitial space. It will be arranged. In such a configuration, it is assumed that the soil-enclosed floor beam to which the heat in the soil space is heated becomes a thermal bridge and leaks into the under-floor space, but in the present invention, the floor-beam heat insulating material is provided along the soil-enclosed floor beam. ing. Therefore, it is possible to suppress the heat of the dirt space from leaking into the underfloor space.

  The building of the fourth invention is the building of the third invention, wherein the floor beam heat insulating material covers the underfloor floor beam provided at the boundary between the underfloor space and the soil space from the underfloor space side. The floor portion of the space adjacent to the soil is provided with an underfloor heat insulating material, and the floor beam heat insulating material is provided continuously with the underfloor heat insulating material.

  According to the present invention, the floor beam heat insulating material is provided so as to cover the soil surrounding floor beam provided at the boundary between the soil space and the under floor space of the adjacent space from the under floor space side, and the floor beam heat insulating material is It is provided continuously with the underfloor heat insulating material provided on the floor of the adjacent space. Thereby, the continuous heat insulation line is formed by the floor beam heat insulating material and the underfloor heat insulating material, and the heat leakage from the adjacent portion between the soil surrounding floor beam and the floor portion of the space adjacent to the soil can be suppressed. Thereby, the heat insulation performance of the dirt space can be improved.

  The building of a fifth invention is the building of the third invention, wherein the floor beam heat insulating material covers the soil-enclosed floor beam provided at a boundary portion between the underfloor space and the soil space from the soil space side. It is characterized by being.

  According to the present invention, since the floor beam heat insulating material is provided so as to cover from the soil space side to the soil surrounding floor beam provided along the boundary between the soil space and the underfloor space of the soil adjacent space, It is possible to suppress the heat of the dirt space from being transmitted to the dirt enclosure floor beam itself. Therefore, in addition to being able to prevent the heat of the soil space from leaking to the underfloor space of the space adjacent to the soil via the soil-enclosed floor beam, the heat of the soil space is connected to the floor beam via the soil-enclosed floor beam. It is possible to suppress leaking to the outside from the part away from the soil space transmitted to the floor beams and pillars. Thereby, the further improvement can be aimed at about the heat insulation performance of soil space.

  The building of the sixth invention is any one of the third to fifth inventions, wherein any one of the plurality of unit structures is provided with the soil space and the soil adjacent space. A plurality of floors supporting a floor material forming a floor of the adjacent soil space between a pair of opposing floor beams in a portion corresponding to the adjacent soil space in the floor portion of the unit structure. A small beam is bridged, and the floor beam is provided as the soil-enclosed floor beam along the boundary between the under-floor space of the adjacent space between the soil and the space between the soil below the floor material. The floor beam heat insulating material is provided along the floor beam.

  By the way, when a soil space is provided in a part of the unit structure, a soil space and a soil adjacent space are provided in the unit structure. In this case, for example, in the floor portion of the unit structure, a plurality of floor beams are bridged between a pair of opposed floor beams, and the soil adjacent to the floor beams. It is conceivable to install a floor material that forms the floor of the space. Then, the floor beams are arranged along the boundary between the underfloor space and the soil space in the adjacent space below the floor material, and the floor beam becomes a thermal bridge and heat in the soil space. May leak into the space under the floor in the space adjacent to the soil. In this respect, in the present invention, since the floor beam heat insulating material is provided for the floor beam, it is possible to suppress the floor beam from becoming a thermal bridge even in such a configuration.

  The building of a seventh invention is the building of any one of the first to sixth inventions, wherein the interstice space is partitioned from the outside by an outer wall part, and the floor girder along the outer wall part is the earthen-enclosed floor beam The floor beam is provided so as to cover the floor beam from the side of the soil space, a foundation is provided below the floor beam, and the space side of the foundation at the rising portion of the foundation The side wall of the floor is provided with a foundation thermal insulation side by side with the floor beam thermal insulation material, and in the interior of the soil below the floor surface of the soil, the thermal insulation is continuous with the foundation thermal insulation material. A floor insulation is provided.

  According to the present invention, the foundation is installed below the floor beam provided along the boundary between the soil space and the outdoors, and the foundation heat insulating material is provided on the side surface of the foundation space at the rising portion of the foundation. ing. Therefore, it is possible to suppress the heat of the dirt space from leaking outside through the foundation. In addition, since the foundation heat insulating material is provided side by side with the floor beam heat insulating material, a continuous heat insulation line is formed by each of these heat insulating materials, and as a result, from the adjacent part of the foundation and the floor beam heat insulating material. Heat leakage is suppressed. Moreover, since the interstitial floor heat insulating material is provided inside the interstices below the interstitial floor, it is possible to suppress the heat in the interstitial space from leaking outside through the interstitial floor. In addition, since the interstitial floor insulation is installed so that the foundation insulation and the insulation are continuous, a continuous insulation line is formed by the interstitial floor insulation and the foundation insulation, and as a result, the interstitial floor and the foundation are adjacent to each other. Heat leakage from the part is suppressed. Therefore, from the above, the heat insulation performance of the dirt space can be further enhanced.

  A building according to an eighth invention is the building according to any one of the first to seventh inventions, wherein the unit structure includes a plurality of building units in which pillars and beams are connected in a rectangular parallelepiped shape and separated from each other, and the respective buildings. A floor unit that is provided between the units and that constitutes the floor portion, and the soil space is surrounded by the plurality of soil-enclosed floor beams of the floor unit.

  In a unit-type building, a building unit in which floor materials, outer wall materials and the like are assembled on a frame made of beams and columns is manufactured in advance at a manufacturing factory, and then transported to a construction site and installed. For this reason, when installing equipment in a dirt space in a building unit in a cold district or the like, it is virtually impossible to install the equipment in the building unit after installing the building unit. Therefore, for example, first, a floor is formed on the ground, and equipment is installed on the floor, and then the building unit is placed at a predetermined installation location while passing the equipment through the open area surrounded by each floor. It will be installed. However, in this case, it is necessary to carefully move the building unit so that the dirt-enclosing floor beam does not hit the equipment, which is not preferable in terms of workability. In this regard, in the present invention, a plurality of building units are separated from each other, a floor unit is provided between the separated building units (intermediate space), and a soil space is formed in an installation portion of the floor unit. In this case, even after the building unit and the floor unit are installed, since the outer wall material and the inner wall material are not installed above the floor unit, the equipment can be installed on the dirt floor formed in the installation part of the floor unit. . Therefore, it is possible to improve the workability when installing the equipment in the dirt space. In addition, after installing an installation apparatus on a floor between floors, the building part (intermediate structure part) between each building unit is constructed by spanning an outer wall material, a ceiling material, etc. between each building unit placed apart.

  A building of a ninth invention is characterized in that, in any one of the first to eighth inventions, equipment is installed in the soil space.

  According to the present invention, since the equipment is installed in the dirt space where the heat insulation performance is improved, it is possible to suppress a decrease in the capacity of the equipment even in a cold region. As the equipment, for example, a hot water storage tank for storing hot water, a heat pump type heating device, or the like can be considered. When a hot water storage tank is installed in the soil space, a decrease in hot water temperature of the hot water storage tank can be suppressed, and when a heat pump type heating device is installed, a decrease in heating capacity can be suppressed.

The perspective view which shows the outline | summary of a building. The perspective view which shows the structure of a building unit. (A) is a top view which shows the floor plan of a 1st floor part, (b) is a top view which shows the housing structure of the 1st floor part of a building main body. The perspective view which shows the structure of a floor unit. The longitudinal cross-sectional view which shows the structure between dirt spaces and its periphery. The longitudinal cross-section which shows the structure of the boundary part periphery between the soil space and the under floor space of the space adjacent to the soil. Explanatory drawing for demonstrating the construction procedure of a building. The longitudinal cross-sectional view which shows the structure between dirt spaces in other embodiment, and its periphery. The longitudinal cross-sectional view which shows the structure between dirt spaces in other embodiment, and its periphery.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing an outline of a building.

  As shown in FIG. 1, the building 10 includes a building body 12 disposed on a foundation 11 and a roof 13 disposed above the building body 12. The building body 12 is a two-story building, and is constructed by connecting a plurality of building units 20 to each other. In the present embodiment, as the structure of the building main body 12, a plurality of building units 20 are separated from each other, and an intermediate structure having a configuration different from that of the building units 20 is constructed between the separated building units 20. The unit separation method is adopted. In FIG. 1, the building parts X1 and X2 are unit structure parts formed by connecting a plurality of building units 20 to each other, and the building part X3 is provided in an intermediate space between the unit structure parts X1 and X2. Intermediate structure portion. In the illustrated configuration, the building unit 20 is separated by one unit in the short direction (wife direction), so that the intermediate structure portion X3 is on the short side (wife surface side) of the building unit 20. The width is substantially the same as the width of.

  The building unit 20 is not installed in the intermediate structure portion X3, and the intermediate structure portion X3 is opposed to each other with the intermediate structure portion X3 interposed therebetween, using the building units 20 of the unit structure portions X1 and X2. The building unit 20 is constructed by bridging various building materials. More specifically, an intermediate ceiling beam is provided between the two building units 20 that are separated from each other, with an intermediate ceiling beam 22 (see FIG. 2) being bridged and supported by the intermediate ceiling beam. External wall panels are installed. In the first floor part, the floor unit is fixed in a state of being placed on the foundation 11 (the contents will be described later), and in the second floor part, the floor unit is fixed in a state of being placed on an intermediate ceiling beam. Has been.

  FIG. 2 is a perspective view showing the configuration of the building unit 20. As shown in FIG. 2, the building unit 20 includes four columns 21 disposed at the four corners thereof, and four ceiling beams 22 and floor beams 23 that connect the upper end portion and the lower end portion of each column 21, respectively. And. A rectangular frame (frame) is formed by the pillars 21, the ceiling beams 22 and the floor beams 23. The column 21 is made of a square tube-shaped square steel. Moreover, the ceiling beam 22 and the floor beam 23 are made of channel steel having a U-shaped cross section, and are installed so that the openings thereof face each other.

  A plurality of small ceiling beams 25 are bridged between the large ceiling beams 22 on the long sides of the building unit 20 at predetermined intervals. Similarly, a plurality of floor beams 26 are bridged between the large floor beams 23 on the long sides of the building unit 20 at predetermined intervals. The ceiling beam 25 and the floor beam 26 are provided at the same interval and at positions corresponding to the upper and lower sides, respectively. For example, the ceiling beam 25 is made of lip groove steel, and the floor beam 26 is made of square steel. The ceiling member 27 is supported by the ceiling beam 25 and the floor member 28 is supported by the floor beam 26.

  Next, the configuration of the first floor portion of the building 10 will be described with reference to FIG. 3A is a plan view showing a floor plan of the first floor portion, and FIG. 3B is a plan view showing a frame configuration of the first floor portion of the building main body 12.

  As shown in FIG. 3 (a), in the first floor portion of the building 10, the unit structure X1 is provided with a front door 14, a toilet 15, and a bathroom 16, and the unit structure X2 is provided with a Japanese-style room 17 to provide a unit structure. A living room 18 is provided across the part X2 and the intermediate structure part X3. In addition, a space 19 is provided in the intermediate structure portion X 3, and a hot water storage tank 29 is provided in the space 19. Hot water is supplied to the hot water storage tank 29 from hot water supply equipment such as a heat pump unit (not shown), and the hot water is stored in the hot water storage tank 29. Here, the hot water storage tank 29 corresponds to equipment.

  As shown in FIG. 3 (b), a floor unit 30 is provided on the first floor portion of the building body 12 between two building units 20 that are separated from each other. The floor unit 30 is formed in a rectangular shape, and the size (vertical and horizontal dimensions) in plan view is substantially the same as the size in plan view of the building unit 20. The floor unit 30 and the building unit 20 are provided side by side in the short direction.

  FIG. 4 is a perspective view showing the configuration of the floor unit 30. As shown in FIG. 4, the floor unit 30 includes four column-less joints 32 disposed at the four corners thereof, and four floor unit large beams 33 respectively connecting the pillar-less joints 32. A rectangular frame body is formed by the pillar-less joint 32 and the floor unit girder 33. The floor unit girder 33 is made of the same grooved steel as the floor girder 23, and is installed so that the openings thereof face each other. As described above, the living room 18 and the dirt space 19 are provided on the first floor portion of the intermediate structure part X3 where the floor unit 30 is installed. A plurality of floor unit small beams 34 are bridged at predetermined intervals between the floor unit large beams 33 of FIG. The floor unit beam 34 is made of the same square steel as the floor beam 26, and is installed at the same pitch as the floor beam 26, for example. And on each floor unit beam 34, the floor material 36 which consists of particle boards is installed.

  On the other hand, in the floor unit 30, the floor unit beam 34 is not bridged between the floor unit large beams 33 on the long sides facing each other at the portion corresponding to the soil space 19, and therefore the floor material 36 is also installed. Not. Accordingly, an opening 45 is formed in a portion corresponding to the dirt space 19 in the floor unit 30, and the opening 45 is surrounded by three floor unit large beams 33 and one floor unit small beam 34. It is formed as an inner region. The floor beams 33 and 34 surrounding the opening 45 correspond to a soil-enclosed floor beam surrounding the space 19 as will be described later.

  The column-less joint 32 includes two joint plates 37 for joining two floor unit large beams 33 and a base plate 38 provided at the bottom thereof. The ends of the two joint plates 37 are joined to each other at a right angle, and the tops thereof are arranged facing the unit inside.

  Next, the interstitial space 19 and the surrounding configuration will be described with reference to FIG. FIG. 5 is a longitudinal sectional view showing the structure of the interstitial space 19 and its surroundings, and is a cross section taken along the line AA in FIG.

  As shown in FIG. 5, a base heat insulating material 41 is provided on the side surface of the rising portion 11 a of the base 11. The basic heat insulating material 41 is made of polyethylene foam. On the rising portion 11a of the foundation 11, a floor unit large beam 33 (specifically, a floor unit large beam 33 on the short side) of the floor unit 30 is provided along the foundation 11, and a groove portion (specifically, a floor unit large beam 33 in detail). In the floor unit large beam 33, an in-beam heat insulating material 42 made of glass wool is disposed so as to fill the groove portion (inside space surrounded by the upper and lower flange portions and the web portion). Between the foundation 11 (rising part 11a) and the floor unit large beam 33, a foundation heat insulating material 43 made of glass wool is provided so as to extend along the foundation 11. The heat insulating material 43 on the foundation is sandwiched between the foundation 11 and the floor unit large beam 33 in a compressed state, thereby preventing outside air from entering and exiting the dirt space 19 between the foundation 11 and the floor unit large beam 33. doing.

  On the indoor side of the rising portion 11a of the foundation 11, a floor portion of the dirt space 19 (hereinafter referred to as a dirt floor portion 50) is provided. The surrounding floor 50 is surrounded by the rising portion 11a of the foundation 11 and the block wall portion 51. Specifically, the rising portion 11a of the foundation 11 is provided on one side of the surrounding floor 50, and Is provided with a block wall 51. The block wall portion 51 is configured by providing concrete blocks 52 stacked in two steps side by side along the periphery of the floor 50 on the ground surface 55 (see also FIG. 6). The height of the upper surface of the block wall portion 51 is substantially the same as the height of the top edge of the foundation 11 (the rising portion 11a).

  The dirt floor portion 50 is formed by embedding soil on the ground surface 55 in the inner region surrounded by the rising portion 11 a of the foundation 11 and the block wall portion 51, and on the embankment portion 56. It is equipped with cast concrete 57. The floor surface of the soil space 19 (hereinafter referred to as the soil floor surface 53) is formed by the upper surface of the soil concrete 57. The dirt floor surface 53 is located below the upper surface of the floor unit large beam 33, and specifically, is located at substantially the same height as the lower surface of the floor unit large beam 33. A hot water storage tank 29 is installed on the soil concrete 57.

  An outer wall panel 61 is fixed to the floor unit large beam 33. The outer wall panel 61 includes an outer wall surface material 62 that forms an outdoor surface, and an outer wall frame 63 that is fixed to the back surface side (indoor side). The outer wall surface material 62 is made of an exterior material such as a ceramic siding. The outer wall frame 63 is formed by connecting a plurality of frame materials made of lightweight steel frames having a U-shaped cross section in a rectangular frame shape. The lower frame member 63a of the outer wall frame 63 is fixed to the outdoor side surface of the floor unit girder 33 (its web portion) with bolts or the like. Moreover, although not appearing on the drawing, between the building units 20 separated from each other, an intermediate ceiling beam made of the same channel steel as the floor unit large beam 33 is located vertically above the floor unit large beam 33. The upper frame material of the outer wall frame 63 is fixed to the intermediate ceiling beam with bolts or the like. Thereby, the outer wall panel 61 is fixed with respect to the building 10.

  An intermediate panel 65 is fixed on the indoor side of the outer wall panel 61 (on the dirt space 19 side). The intermediate panel 65 includes a base surface material 66 made of gypsum board, a wall frame 67 fixed to the back surface side (outdoor side), and an in-wall heat insulating material 68 made of glass wool disposed in the frame of the wall frame 67. And. The lower ground material 66 is disposed on the dirt space 19 side of the floor unit large beam 33, and a lower portion thereof extends downward to the lower end height of the large beam 33. Thereby, the floor unit large beam 33 is covered and hidden from the dirt space 19 side by the base surface material 66. The wall frame 67 is configured by connecting a plurality of frame materials made of wooden squares into a rectangular frame shape. The wall frame 67 is fixed to the indoor side surface of the outer wall frame 63 with screws or the like, whereby the intermediate panel 65 is fixed to the outer wall panel 61. In the installed state of the intermediate panel 65, the in-wall heat insulating material 68 is disposed between the outer wall surface material 62 and the base surface material 66 above the floor unit large beam 33.

  Here, at least a part of the floor unit girder 33, specifically, almost the entire vertical height thereof, is located above the dirt floor surface 53, and is arranged at the boundary between the dirt space 19 and the outdoors. . Therefore, there is a concern that the floor unit girder 33 becomes a thermal bridge and the heat of the dirt space 19 leaks outside. Therefore, as a countermeasure, an inner wall panel 71 is fixed to the indoor side of the intermediate panel 65 (on the dirt space 19 side). The inner wall panel 71 includes an inner wall surface material 72 made of gypsum board and a wall heat insulating material 73 fixed to the back surface side thereof. The inner wall surface material 72 has substantially the same size (vertical and horizontal dimensions) as the lower ground material 66 of the intermediate panel 65. The wall heat insulating material 73 is made of glass wool and is formed in a plate shape having substantially the same size (vertical and horizontal dimensions) as the inner wall surface material 72. The wall heat insulating material 73 is fixed to the back surface of the inner wall surface material 72 with an adhesive or the like. The inner wall panel 71 is installed in a state in which the wall heat insulating material 73 is superimposed on the indoor side surface of the base surface material 66 (the plate surface on the side of the dirt space 19), and the inner wall material 72 is installed in the wall frame 67 in the installed state. It is fixed with screws. In this case, the wall heat insulating material 73 is provided in a state of being sandwiched between the base surface materials 66 and 72.

  In the installed state of the inner wall panel 71, the lower end portion of the inner wall panel 71 and the lower end portion of the wall heat insulating material 73 are in contact with the dirt floor surface 53 of the dirt concrete 57. In this case, the inner wall panel 71 and thus the wall heat insulating material 73 are provided continuously over the height range from the dirt floor 53 to the upper surface of the floor unit girder 33 on the indoor side (the space 19 side) of the floor unit girder 33. ing. That is, the wall heat insulating material 73 is provided with an overlapping portion that overlaps the entire height direction of the floor unit large beam 33, and the overlapping portion constitutes the floor beam heat insulating material. Thereby, it is suppressed that the floor unit large beam 33 becomes a thermal bridge and the heat of the dirt space 19 leaks to the outdoors. In addition, since the inner wall panel 71 is installed, a double heat insulating structure of the wall heat insulating material 68 and the wall heat insulating material 73 is realized in the outer wall portion 47 that divides the dirt space 19 and the outdoors. The heat insulation performance of the space 19 is enhanced. The outer wall portion 47 includes an outer wall panel 61, an intermediate panel 65, and an inner wall panel 71.

  Of each floor unit beam 34 of the floor unit 30, a floor joist 81 is provided along the beam 34a on the upper surface of the floor unit beam 34a facing the floor unit beam 33 with the space 19 between them. A floor material 36 is laid on the floor joists 81. A floor panel 82 made of gypsum board is provided on the side surface of the floor unit beam 34a on the side of the floor space 19 side. The dirt panel 82 is fixed to the same side surface of the floor unit beam 34a with screws or the like.

  An underfloor heat insulating material 78 is provided on the lower surface side of the floor material 36, and a small beam heat insulating material 77 as a floor beam heat insulating material is provided on the side surface of the floor unit beam 34a. Both the underfloor heat insulating material 78 and the small beam heat insulating material 77 are made of polystyrene foam. The small beam heat insulating material 77 is provided on the side surface of the floor unit small beam 34a opposite to the space 19 side, that is, the side surface of the living room 18 on the underfloor space 79 side, and is elongated along the small beam 34a. It extends to. The beam height insulating material 77 has a vertical height that is longer than the vertical height of the floor unit beam 34a, and covers the entire vertical height of the floor unit beam 34a from the underfloor space 79 side. Further, the upper end portion of the small beam heat insulating material 77 is in contact with the underfloor heat insulating material 78, and a continuous heat insulating line is formed by the underfloor heat insulating material 78 and the small beam heat insulating material 77.

  Below the floor unit beam 34a, a block wall 51 is provided along the beam 34a. The block wall portion 51 is a block wall portion 51 that is disposed so as to face the foundation 11 with the dirt floor portion 50 interposed therebetween, and hereinafter, the block wall portion 51 is denoted by a. Between the block wall 51a and the floor unit beam 34a (and between the block wall 51a and the beam insulation 77), a block heat insulating material 76 made of glass wool extends along the wall 51a. Is provided. The on-block heat insulating material 76 is sandwiched between the block wall portion 51a and the floor unit beam 34a (and the small beam heat insulating material 77) in a compressed state. This prevents the air in the dirt space 19 from entering and leaving the underfloor space 79 of the living room 18 between the block wall portion 51a and the floor unit beam 34a.

  A block heat insulating material 75 is provided on the side surface of the block wall portion 51a, specifically, on the side surface of the wall portion 51a on the underfloor space 79 side. The block heat insulating material 75 is formed of polyethylene foam, and is formed in a long and plate shape along the block wall portion 51a. The block heat insulating material 75 has a vertical height that is substantially the same as the vertical height of the block wall portion 51 a, and an upper end portion of the block heat insulating material 75 is in contact with the block heat insulating material 76. In this case, the block heat insulating material 75 and the small beam heat insulating material 77 are continuous via the block heat insulating material 76, and a continuous heat insulating line is formed by each of the heat insulating materials 75 to 76.

  FIG. 6 is a vertical cross-sectional view showing a configuration around the boundary between the dirt space 19 and the underfloor space of the dirt adjacent space adjacent thereto. FIG. 6 shows a configuration of a boundary portion between the dirt space 19 and the underfloor space of the Japanese-style room 17. FIG. 6 is a cross-sectional view taken along line BB in FIG.

  As shown in FIG. 6, floor joists 86 are provided on the upper surfaces of the adjacent floor unit 30 and the adjacent floor unit beam 33 and the floor beam 23 in the building unit 20 (of the unit structure portion X2). On the floor joists 86, a floor surface material 28 and a floor connecting surface material 87 are provided, and each of the floor surface materials 28 and 87 is made of particle board. An underfloor heat insulating material 89 is provided on the lower surface side of each floor surface material 28, 87, and a large beam heat insulating material 90 as a floor beam heat insulating material is provided on the side surface of the floor unit large beam 33 (specifically, its web portion). Yes. Both the underfloor heat insulating material 89 and the large beam heat insulating material 90 are made of polystyrene foam.

  The large beam heat insulating material 90 is provided on the side surface of the floor unit large beam 33 opposite to the space 19 (in other words, the side surface on the under-floor space 92 side of the Japanese room 17), and is formed in a long shape along the floor unit large beam 33. ing. The large beam heat insulating material 90 has substantially the same vertical height as the vertical height of the floor unit large beam 33 and covers the entire vertical height of the large beam 33 from the underfloor space 92 side. Thereby, it is suppressed that the floor unit large beam 33 becomes a thermal bridge and the heat of the dirt space 19 leaks to the underfloor space 92 side. The upper end portion of the large beam heat insulating material 90 is in contact with the underfloor heat insulating material 89, and a continuous heat insulation line is formed by the large beam heat insulating material 90 and the underfloor heat insulating material 89.

  Below the floor unit large beam 33, a block wall portion 51 is provided along the large beam 33. The block wall portion 51 is a block wall portion 51 extending in a direction orthogonal to the foundation 11, and hereinafter, the block wall portion 51 is denoted by b. Between the block wall 51b and the floor unit large beam 33, an on-block heat insulating material 94 made of glass wool is provided. The on-block heat insulating material 94 is sandwiched between the block wall portion 51b and the floor unit large beam 33 in a compressed state. As a result, the air in the dirt space 19 is prevented from entering and leaving the under-floor space 92 of the Japanese-style room 17 through the space between the block wall portion 51 b and the floor unit large beam 33.

  A block heat insulating material 95 is provided on the side surface of the block wall portion 51b, specifically, on the side surface of the wall portion 51b on the underfloor space 92 side. The block heat insulating material 95 is formed of polyethylene foam, and is formed in a long and plate shape along the block wall portion 51b. The block heat insulating material 95 has a vertical height that is substantially the same as the vertical height of the block wall portion 51 b, and an upper end portion of the block heat insulating material 95 is in contact with the block heat insulating material 94. In this case, the block heat insulating material 95 and the large beam heat insulating material 90 are continuous via the block heat insulating material 94, and a continuous heat insulating line is formed by each of the heat insulating materials 90, 94, 95.

  In addition, a partition wall 97 that partitions the dirt space 19 and the Japanese-style room 17 is installed on the floor connecting face material 87. The partition wall 97 includes a pair of opposing wall surface materials 98, of which the wall surface material 98 a on the dirt space 19 side is disposed in contact with the end portion of the floor connecting surface material 87, and below the same surface material 87. Specifically, it extends to the dirt floor 53. Thereby, the floor unit large beam 33 is in a state of being covered and hidden from the dirt space 19 side by the wall surface material 98a.

  In addition, although illustration is abbreviate | omitted, the structure similar to the adjacent part of the building unit 20 and the floor unit 30 of the unit structure part X2 mentioned above also about the adjacent part of the building unit 20 and the floor unit 30 on the unit structure part X1 side It has become. That is, in the adjacent portion on the unit structure portion X 1 side, the large beam heat insulating material 90 is provided on the side surface of the floor unit large beam 33, and between the block wall 51 b below the other floor unit large beam 33 and the large beam 33. A block heat insulating material 94 is provided, and a block heat insulating material 95 is provided on a side surface of the block wall portion 91b. The large beam heat insulating material 90 and the block heat insulating material 95 are continuous via the block heat insulating material 94, and the heat insulating materials 90, 94, 95 form a continuous heat insulating line.

  Next, the work content when constructing the building 10 of this embodiment is demonstrated based on FIG. FIG. 7 is an explanatory diagram for explaining a construction procedure of the building 10. Here, the construction procedure around the dirt space 19 will be mainly described.

  In the construction of the building 10, first, as shown in FIG. 7A, the foundation 11 is placed and a concrete block 52 is installed to construct a block wall portion 51. Then, the embankment portion 56 is formed by depositing soil in the inner region surrounded by the block wall portion 51 and the foundation 11, and the soil concrete 57 is placed on the embankment portion 56. Thereafter, the block heat insulating materials 75 and 95 are provided on the side surfaces of the block wall portion 51, the foundation heat insulating material 43 is installed on the foundation 11, and the block heat insulating materials 76 and 94 are installed on the block wall portion 51.

  Next, as shown in FIG. 7B, the building unit 20 and the floor unit 30 constituting the first floor portion are installed on the foundation 11. At this time, the opening 45 of the floor unit 30 is installed according to the soil concrete 57.

  Next, as shown in FIG. 7C, the hot water storage tank 29 is installed on the soil concrete 57. This installation is performed, for example, by carrying the hot water storage tank 29 over the floor unit girder 33 of the floor unit 30 to the soil concrete 57.

  Next, as shown in FIG. 7D, the outer wall panel 61 is installed between the building units 20 that are separated from each other, and the intermediate panel 65 and the inner wall panel 71 are installed. Thereby, the construction of the outer wall portion 47 on the dirt space 19 side is completed. Thereafter, the construction of the first floor portion in the intermediate structure portion X3 is completed by bridging other building materials (such as the outer wall portion on the side of the living room 18) between the building units 20 placed apart.

  Thereafter, the building unit 20 of the second floor part is installed on the building unit 20 of the first floor part, and the floor unit is installed between the building units 20 of the second floor part, so that the construction of the series of buildings 10 is performed. The work is finished.

  As mentioned above, according to the structure of this embodiment explained in full detail, the following outstanding effects are acquired.

  The floor of the dirt space 19 is surrounded by surrounding the dirt space 19 with a plurality of dirt surrounding floor beams (specifically, three floor unit beams 33 and one floor unit beam 34a) of the floor unit 30. The soil floor 53 which is a surface was formed below the upper surface of the soil surrounding floor beam. And the floor-beam heat insulating material was provided along the soil-enclosure floor beam so that the upper side part from the inter-soil space 19 side in the soil-enclosed floor beam may be covered. In this case, it is possible to suppress the heat of the dirt space 19 from leaking to the outside of the dirt space 19 as the dirt-enclosed floor beam becomes a thermal bridge. Thereby, the heat insulation performance of the dirt space 19 can be improved.

  The interstitial space 19 is provided so as to be separated from the outside by the outer wall part 47, and an inner wall panel 71 having an inner wall surface material 72 and a wall heat insulating material 73 provided on the back side is provided on the outer wall part 47 on the interstitial space 19 side. Provided. Then, the inner wall surface material 72 and the wall heat insulating material 73 are extended below the upper surface of the floor unit large beam 33 on the dirt space 19 side from the floor unit large beam 33, and The part overlapping in the vertical direction was used as the floor beam insulation. In this case, it is possible to suppress the leakage of the heat of the dirt space 19 to the outdoors by the floor unit large beam 33 serving as a thermal bridge. Further, since the floor unit large beam 33 is covered from the dirt space 19 side by using a part of the wall heat insulating material 73, the floor unit large beam 33 and the outer wall portion 47 are connected to the wall heat insulating material on the dirt space 19 side of the floor unit large beam 33. 73, and as a result, it is possible to prevent the heat of the dirt space 19 from leaking from the boundary portion between the floor unit large beam 33 and the outer wall portion 47 to the outside. Therefore, in this case, the heat insulation performance of the dirt space 19 can be enhanced. Especially in cold districts, the outdoor floor unit girder 33 may become a thermal bridge and the heat insulation performance may be greatly reduced. Therefore, it is considered that the effect obtained by applying the above configuration is great.

  Further, since the outer wall portion 47 is provided with an in-wall heat insulating material 68 on the outdoor side of the wall heat insulating material 73, a double heat insulating structure is constructed by the inner wall heat insulating material 68 and the wall heat insulating material 73 in the outer wall portion 47. it can. Thereby, the heat insulation performance of the outer wall part 47 can be improved greatly.

  The living room 18 and the Japanese-style room 17 in which the floor surface is formed at a position higher than the dirt floor surface 53 are provided adjacent to the dirt space 19. Then, a small beam heat insulating material 77 (floor heat insulating material) is provided on the side surface of the floor unit beam 34a disposed at the boundary between the under floor space 79 of the living room 18 and the dirt space 19, and an under floor space 92 of the Japanese room 17 is provided. A large beam heat insulating material 90 (floor beam heat insulating material) was provided on the side surface of the floor unit large beam 33 disposed at the boundary with the soil space 19. In this case, the floor unit small beam 34a and the floor unit large beam 33 serve as a thermal bridge, and the heat of the dirt space 19 can be prevented from leaking into the underfloor space 79 of the living room 18 and the underfloor space 92 of the Japanese room 17.

  The small beam heat insulating material 77 was provided so as to cover the floor unit small beam 34 a from the under floor space 79 side of the living room 18, and the small beam heat insulating material 77 was made continuous with the under floor heat insulating material 78 provided on the floor portion of the living room 18. In this case, a continuous heat insulation line is formed by the small beam heat insulating material 77 and the underfloor heat insulating material 78, and heat leakage from an adjacent portion between the floor unit small beam 34a and the floor portion of the living room 18 can be suppressed. Further, the large beam heat insulating material 90 was provided so as to cover the floor unit large beam 33 from the under floor space 92 side of the Japanese-style room 17, and the large beam heat insulating material 90 was made continuous with the under-floor heat insulating material 89 provided on the floor portion of the Japanese-style room 17. In this case, a continuous heat insulation line is formed by the large beam heat insulating material 90 and the underfloor heat insulating material 89, and heat leakage from the adjacent portion between the floor unit large beam 33 and the floor portion of the Japanese-style room 17 can be suppressed. Thereby, the heat insulation performance of the space 19 can be improved.

  By the way, when providing the dirt space 19 in a part of the floor unit 30, the dirt space 19 and the dirt adjacent space (in the present embodiment, the living room 18) are provided in the floor unit 30, respectively. In this case, for example, in the floor unit 30 corresponding to the living room 18, a plurality of floor unit beam beams 34 are bridged between a pair of opposed floor unit beam beams 33, and the living room is placed on the plurality of floor unit beam beams 34. It is conceivable to install a floor material 36 that forms 18 floors. Then, the floor unit beam 34a is disposed along the boundary between the underfloor space 79 of the living room 18 and the soil space 19 below the floor material 36, and the floor unit beam 34a is connected to the thermal bridge. It is conceivable that the heat in the dirt space 19 leaks into the underfloor space 79 of the living room 18. In this regard, in the present invention, since the beam-insulating material 77 is provided for the floor unit beam 34a, it is possible to suppress the floor unit beam 34a from becoming a thermal bridge even in such a configuration.

  Also, a floor beam heat insulating material (specifically, a wall heat insulating material 73) is provided for each of the plurality of soil surrounding floor beams (three floor unit large beams 33 and one floor unit small beam 34a) surrounding the space 19. A small beam heat insulating material 77 and a large beam heat insulating material 90) are provided, so that it is possible to suppress each of the soil surrounding floor beams from being a thermal bridge, and as a result, the heat insulating effect of the soil space 19 can be remarkably enhanced. .

  By the way, when installing the hot water storage tank 29 in the dirt space in the building unit 20, for example, first, an earth floor is formed on the ground surface, the hot water storage tank 29 is installed on the dirt floor, and then the building unit 20 is installed. Is considered to be installed while passing the hot water storage tank 29 in the opening area surrounded by the soil-enclosed floor beams. However, in this case, it is necessary to carefully move the building unit 20 so that the dirt-enclosing floor beam does not hit the hot water storage tank 29, which is not preferable in terms of workability. Therefore, in the present embodiment, the unit structure includes a plurality of separated building units 20 and a floor unit 30 that is provided between each building unit 20 and forms a floor portion. The periphery is formed by being surrounded by a plurality of dirt-enclosing floor beams of the floor unit 30. In this case, even after the building unit 20 and the floor unit 30 are installed, since the outer wall material and the inner wall material are not installed above the floor unit 30, they are formed in the installation portion (intermediate structure portion X3) of the floor unit 30. The hot water storage tank 29 can be installed on the dirt floor 50 to be made. Thereby, when installing the hot water storage tank 29 in the dirt space 19, improvement of work workability | operativity can be aimed at.

  Since the hot water storage tank 29 is installed in the dirt space 19, a decrease in the hot water temperature of the hot water storage tank 29 can be suppressed even in a cold region. In addition, by installing the hot water storage tank 29 in the interstitial space 19 in which the floor surface (the interstitial floor surface 53) is set below the floor surface of the living room 18, the hot water storage tank 29 having a relatively large height is installed in the building 10. Even if it is installed, it can alleviate the feeling of pressure.

  The present invention is not limited to the above embodiment, and may be implemented as follows, for example.

  (1) In the above embodiment, the dirt space 19 is formed in the intermediate structure portion X3 of the building 10, that is, the installation site of the floor unit 30, but this is changed and the dirt space in the unit structure portions X1, X2, ie, the building unit 20 19 may be formed. In this case, in the floor portion of the building unit 20, the floor beam 26 is not provided in a portion corresponding to the dirt space 19, and thereby, a plurality of floor beams 23 and floor beams 26 are provided in the portion corresponding to the dirt space 19. An opening is formed as an inner region surrounded by (that is, a plurality of soil-enclosed floor beams). Even in such a configuration, it is possible to improve the heat insulating property of the interstitial space 19 by providing the floor beam heat insulating material to each of the large floor beams 23 and the small floor beams 26 surrounding the interstitial space 19.

  Further, in this configuration, when the hot water storage tank 29 is installed in the dirt space 19, the dirt floor portion 50 is first constructed, and the hot water storage tank 29 is installed on the dirt concrete 57. Then, the building unit 20 is installed at a predetermined installation position while passing the hot water storage tank 29 through the opening. Thereby, the hot water storage tank 29 can be installed in the dirt space 19 in the building unit 20.

  (2) In the above embodiment, the floor beam heat insulating material is configured by using a part of the wall heat insulating material 73 of the inner wall panel 71, but a dedicated floor beam heat insulating material may be provided separately from the wall heat insulating material 73. For example, a floor beam heat insulating material having a vertical height from the soil floor surface 53 to the upper surface of the floor unit large beam 33 is formed, and the floor beam heat insulating material is provided on the floor unit large beam 33 from the soil space 19 side. Also good. In short, the height from the dirt floor surface 53 to the upper surface of the floor unit girder 33 on the side of the dirt space 19 of the floor unit beam 33 only needs to be covered from the dirt space 19 side by the floor beam heat insulating material.

  For example, if the outer wall frame 63 (lower frame member 63a) of the outer wall panel 61 is fixed to the flange portion instead of the web portion side surface of the floor unit large beam 33, the floor beam heat insulating material 33 is provided from the outdoor side. You may provide so that the whole up-and-down height whole area may be covered. Also in this case, it is possible to suppress the leakage of the heat of the soil space 19 to the outdoors by the floor unit large beam 33 serving as a thermal bridge.

  (3) In the above embodiment, the small beam heat insulating material 77 is provided on the side surface of the floor unit small beam 34a of the floor unit 30 on the underfloor space 79 side, but instead of or in addition to this, the small beam heat insulating material 77 is disposed on the floor. You may provide in the side surface by the side of the dirt space 19 in the unit beam 34a. Moreover, in the said embodiment, although the large-beam heat insulating material 90 was provided in the side surface by the side of the underfloor space 92 in the floor unit large beam 33, it replaces with or in addition, the large-beam heat insulating material 90 in the dirt space 19 side in the floor unit large beam 33. May be provided. That is, the small beam heat insulating material 77 and the large beam heat insulating material 90 may be provided so as to cover the floor unit small beam 34a and the floor unit large beam 33 from the dirt space 19 side, respectively. In these cases, it is possible to suppress the heat of the dirt space 19 from being transmitted to the floor unit beam 34a or the floor unit beam 33 itself (hereinafter referred to as the floor unit beam 34a, etc.), so that the heat of the dirt space 19 is the floor unit beam 34a. In addition to leaking into the under-floor space 79 (92) through, etc., the heat of the interstitial space 19 is transmitted to the column-less joint 32 etc. connected thereto via the floor unit beam 34a etc. and leaks out from there. Can be suppressed. Thereby, the further improvement of the heat insulation performance of the dirt space 19 can be aimed at.

  (4) As shown in FIG. 8, the interstitial floor heat insulating material 112 may be installed inside the interstitial floor portion 111 in a state of being in contact with the basic heat insulating material 41 along the interstitial floor surface 53. The dirt floor heat insulating material 112 is made of polyethylene foam. The interstitial floor heat insulating material 112 is formed in a plate shape having substantially the same size as the interstitial floor surface 53 in a plan view, and is disposed in a state of being sandwiched between the embankment portion 56 and the interstitial concrete 57. In this case, it is possible to suppress the heat of the dirt space 19 from leaking to the outdoor side through the dirt floor 50 and the ground. Moreover, the interstitial floor heat insulating material 112 is provided in contact with the basic heat insulating material 41 in the entire range of the end portion on the basic heat insulating material 41 side. In this case, a continuous heat insulation line is formed by the interstitial floor heat insulating material 112 and the base heat insulating material 41, and as a result, heat leakage from the adjacent portion of the base 11 and the interstitial floor portion 50 can be suppressed. Thereby, the heat insulation performance of the space 19 can be improved further.

  (5) The interstitial floor 50 may be heated by forming an interstitial internal space inside the interstitial floor 50 and installing a floor heating device as a heating means in the interstice internal space. An example is shown in FIG. In the soil floor portion 100 shown in FIG. 9, a plurality of spacers 101 are installed on the upper surface of the embankment portion 56, and soil concrete 57 is installed on the spacers 101. Therefore, an intersoil internal space 103 corresponding to the height of the spacer 101 is formed on the lower surface side of the interstitial concrete 57. A hot water pipe 105 is disposed in the inter-soil inner space 103 as a floor heating device (heating means). This hot water pipe 105 is connected to the hot water storage tank 29, and the hot water in the hot water storage tank 29 is supplied to the hot water pipe 105, so that the heat of the hot water in the hot water pipe 105 heats the interstitial internal space 103 and eventually the interstitial concrete 57. It is like that. In this case, the heat insulation performance of the dirt space 19 can be enhanced.

  Moreover, in the said structure, the inner wall space extended up and down may be formed in the outer wall part 114, and you may make it connect the inner wall space with the soil interior space 103. FIG. If it does so, the warm air of the dirt interior space 103 can be guide | induced to the space in a wall, and this can also warm an outer wall part. Specifically, as shown in FIG. 9, the inner wall panel 71 is provided at a predetermined distance from the intermediate panel 65 so that the inner wall panel 71 extends vertically between the inner wall panel 71 and the intermediate panel 65. 107 is formed. In this case, the inner space 107 is formed between the lower ground material 66 of the intermediate panel 65 and the wall heat insulating material 73 of the inner wall panel 71. The interior space 107 communicates with the interstitial interior space 103 through a gap 110 between the interstitial concrete 57 and the rising portion 11a of the foundation 11, so that the warm air in the interstitial interior space 103 flows into the interior wall 107 side. It has become. Thereby, the heat insulation performance of the outer wall part 114 can be enhanced by the warm air flowing into the inner space 107.

  In the second floor portion of the intermediate structure portion X3, a similar wall space is formed in the outer wall portion that is installed above the outer wall portion 114, and the wall space and the above-described wall space 107 are connected to form a wall. You may make it supply the warm air which flowed in the inner space 107 to the wall space of the second-floor part as needed. In this case, the heat insulation performance can be further enhanced for the outer wall portion of the second floor portion.

  Note that the hot water pipe 105 may be installed in the wall space 107 instead of or in addition to installing the hot water pipe 105 as a heating means in the dirt interior space 103. Even if the hot water pipe 105 is installed in either the interstitial internal space 103 or the intra-wall space 107, since the inter-soil internal space 103 and the intra-wall space 107 are continuous, both the spaces 103 and 107 can be warmed.

  (6) In the above embodiment, the interstitial space 19 is used as an installation space for the hot water storage tank 29 as an equipment device, but may be used as an installation space for other equipment equipment such as a heat pump type water heater. For example, if a heat pump type water heater is installed in the dirt space 19, inconveniences such as a decrease in energy efficiency (COP) due to outside air temperature (low temperature) can be suppressed. Therefore, a favorable driving state can be realized even in a cold region.

  Further, the interstitial space 19 may be used as a workshop such as a Sunday carpenter, or may be used as a space for keeping pets such as dogs and cats. In this case, since the dirt space 19 is a space in which the heat insulating performance is ensured, it is comfortable for workers and pets.

  (7) In the above embodiment, the dirt space 19 is formed in a part of the inner region surrounded by the floor unit beam 33 in plan view, but the dirt space 19 may be formed in the entire inner region. In this case, all of the soil surrounding floor beams surrounding the soil space 19 become the floor unit large beams 33.

  (8) The dirt space 19 of the present invention may be applied to other indoor spaces having a dirt floor, such as a parking space or a front door of a vehicle. For example, when applied to a parking space of a vehicle, the floor unit is composed of three floor unit large beams 33 (for example, two long side floor unit large beams 33 and one short side floor unit large beam 33). It is conceivable to form a U-shape in plan view by connecting via a column-less joint 32 and to form a parking space inside the U-shape. In this case, a garage doorway is formed on the side surface of the parking space where the floor unit beam 33 is not provided, and a shutter device for opening and closing the doorway is provided at the garage doorway. This shutter device employs a built-in heat insulating material to ensure the heat insulating performance of the parking space. And an outer wall part is installed in the side surface on the side facing a shutter apparatus in a parking space, and the inner wall panel 71 is installed in the parking space side in the outer wall part. At this time, the inner wall panel 71 is installed so as to cover the floor unit large beam 33 provided along the outer wall part from the parking space side by a part of the wall heat insulating material 73. Thereby, the heat insulation performance of a parking space is improved.

  Moreover, you may install a storage battery in this parking space. Then, when a vehicle equipped with a battery such as an electric vehicle or a plug-in hybrid is parked in the parking space, the battery can be charged by the storage battery. And since the storage battery is installed in the parking space where the heat insulation performance was improved, it can suppress that the charging capacity of a storage battery falls. Furthermore, the floor height of the vehicle parked in the parking space may be the same as the floor height of the living room adjacent to the parking space. This makes it easier to get on and off the vehicle.

  (9) In the above embodiment, the soil concrete 57 is placed at the construction site, and then the hot water storage tank 29 is installed on the soil concrete 57, but this may be changed. For example, a precast concrete plate may be used as the soil concrete 57, and the hot water storage tank 29 may be assembled in advance to the soil concrete 57 in the manufacturing factory, and transported to the construction site and installed in the assembled state. If it does so, since the operation | work which lays the soil concrete 57 in a construction site, the operation | work which assembles the hot water storage tank 29 on the soil concrete 57, etc. become unnecessary, the reduction of a construction man-hour can be aimed at.

  DESCRIPTION OF SYMBOLS 10 ... Building, 11 ... Foundation, 17 ... Japanese-style room as space adjacent to soil, 18 ... Living as space adjacent to soil, 19 ... Space between soil, 20 ... Building unit as unit structure, 30 ... Floor unit as unit structure 33 ... Floor unit girder as a dirt fence floor beam and floor girder, 34a ... Floor unit girder as a dirt fence floor beam and floor girder, 47 ... Outer wall part, 50 ... Soil floor part, 53 ... Soil floor surface, DESCRIPTION OF SYMBOLS 71 ... Inner wall panel, 72 ... Inner wall surface material, 73 ... Wall heat insulating material, 77 ... Small beam heat insulating material as floor beam heat insulating material, 79 ... Under floor space, 90 ... Large beam heat insulating material as floor beam heat insulating material, 92 ... Under floor space.

Claims (9)

A unit structure having a floor structure in which floor beams are connected to four sides and constructed by connecting a plurality of the unit structures, and a unit-type building having an interstitial space as an indoor space,
The space between the soil is surrounded by a plurality of soil-enclosed floor beams of the floor portion of any one of the plurality of unit structures, so that the soil-floor surface that is the floor surface is surrounded. It is formed below the upper surface of the soil enclosure floor beam,
The upper side of the interstitial floor beam is covered from the side of the interstitial space so as to cover the upper part of the interstitial floor beam above the interstitial floor surface, or from the opposite side of the interstitial space with the interstitial floor beam interposed therebetween A building characterized in that a floor beam heat insulating material is provided along the soil-enclosed floor beam so as to cover the entire height. The soil space is partitioned from the outside by an outer wall portion, and the floor beam is provided as a soil surrounding floor beam along the outer wall portion,
The outer wall portion includes an inner wall panel having an inner wall surface material and a wall heat insulating material provided on the back side thereof on the dirt space side, and the inner wall surface material and the wall heat insulating material are more soiled than the floor beam. It extends below the upper surface of the floor girder on the space side,
The building according to claim 1, wherein a portion of the wall heat insulating material that overlaps with the large floor beam in the height direction is the floor beam heat insulating material. As the indoor space, provided adjacent to the soil space, provided with a soil adjacent space in which a floor surface is formed at a position higher than the soil floor surface,
The soil surrounding floor beam is disposed along the boundary between the underfloor space of the adjacent space between the soil and the soil space, and the floor beam heat insulating material is provided along the soil surrounding floor beam. The building according to claim 1 or 2, characterized in that The floor beam heat insulating material covers the soil surrounding floor beam provided at the boundary between the underfloor space and the soil space from the underfloor space side,
Underfloor heat insulating material is provided in the floor portion of the space adjacent to the soil,
The building according to claim 3, wherein the floor beam heat insulating material is provided continuously to the underfloor heat insulating material.   The building according to claim 3, wherein the floor beam heat insulating material covers the soil surrounding floor beam provided at a boundary portion between the underfloor space and the soil space from the soil space side. The unit structure of any one of the plurality of unit structures is provided with the soil space and the soil adjacent space,
A portion of the floor portion of the unit structure corresponding to the space adjacent to the soil has a plurality of floor small members for supporting a floor material forming the floor of the space adjacent to the soil between a pair of opposed floor beams. There is a beam,
The floor beam is provided as the soil-enclosed floor beam along the boundary between the under-floor space of the adjacent space between the soil and the soil space, which is below the floor material, and the floor beam is along the floor beam. The building according to any one of claims 3 to 5, wherein a floor beam heat insulating material is provided. The soil space is partitioned from the outside by an outer wall portion, and the floor beam is provided as the soil surrounding floor beam along the outer wall portion,
The floor beam heat insulating material is provided so as to cover the floor beam from the soil space side,
A foundation is provided under the floor beam,
On the side of the foundation space side of the foundation rising side, a foundation insulation is provided side by side with the floor beam insulation.
The soil floor insulation material is provided in the interior of the soil below the soil floor surface so that the insulation is continuous with respect to the foundation heat insulation material. The listed building. As the unit structure, a plurality of building units in which pillars and beams are connected in a rectangular parallelepiped shape and separated from each other, and a floor unit that is provided between the building units and constitutes the floor portion are provided.
The building according to any one of claims 1 to 7, wherein the soil space is surrounded by the plurality of soil-enclosed floor beams of the floor unit.   The building according to any one of claims 1 to 8, wherein facility equipment is installed in the dirt space.

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