JP6148093B2 - Building floor structure - Google Patents

Description

  The present invention relates to a floor structure of a building.

  In a building such as a house, a plurality of joists are provided side by side, and a floor portion may be formed by installing a floor surface material on the joists. For example, in a steel house, a joist is provided in a state where it is stretched over a foundation that is disposed oppositely, and the joist supports the floor material from below (see, for example, Patent Document 1). In this configuration, the joists are placed on the foundation, and the positioning of the joists in the vertical direction is performed by the upper surface of the foundation.

JP-A-9-287231

  However, in the configuration where adjacent joists are connected to each other, and only one of these joists is placed on the building structure such as the foundation, the non-mounted joists that are not placed on the building structure, When fixing to the mounting joist that is placed on the building structure, it is necessary to suspend the non-supporting joist with a heavy machine such as a crane and align it with the joisting joist.

  Here, if the height dimension is the same between the mounted joist and the non-supported joist, when aligning the non-supported joist with the mounted joist in the vertical direction, both the upper and lower surfaces of the non-supported joists are It is easy to make the upper and lower surfaces flush with each other even when the operator visually recognizes the boundary between the loaded joist and the non-joist joist from either the upper side or the lower side. However, when the height dimension is different between the loaded joist and the non-shoulder joist, a step is formed on at least one of the upper and lower sides of the boundary between the joist joists and the non-joist joists. Difficulty in the operation of positioning the non-placed joist with respect to the joisting joists.

  The present invention has been made in view of the above circumstances, and in the floor structure of a building, when the step portion of the floor portion is formed using the difference in height position of the joists connected to each other, The main purpose is to set the height dimension appropriately.

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

  A floor structure of a building according to a first aspect of the present invention is a building floor structure in which a floor material is installed on a plurality of joists provided side by side, and the two joists have two adjacent floors. A first joist to which one floor material is fixed and a second joist to which the other floor material is fixed are included, and the second joist is fixed to the first joist. The first joist has a height dimension smaller than that of the first joist, and the second joist is supported from below when the second joist is attached to the first joist on the floor of the building. Positioning means for positioning the second joist in the vertical direction with respect to the joist is provided.

  According to the first invention, when the floor portion of the building is constructed at the construction site, the relative height position of the second joist relative to the first joist is set by the positioning means. Work to fix to joist can be facilitated. For example, in a configuration in which the first joist is placed on a building structure such as a foundation, a structural wall, or a pillar, while the second joist is not placed on the building structure, the second joist is positioned by positioning means. By performing an easy operation of supporting, the second joist can be installed at a desired height position.

  In addition, since the second joist is supported by the positioning means, it is necessary to suspend and support the second joist with a heavy machine such as a crane when fixing the second joist to the first joist, or a dedicated tool. It is not necessary to temporarily fix the second joist with respect to the first joist. Therefore, the work burden at the time of temporarily fixing the second joist to the first joist can be reduced.

  As described above, when the difference in height between the first joist and the second joist is used to form a stepped portion of the floor such as the boundary between the dressing room and the bathroom, or the boundary between the entrance and the hallway. The height of the step can be suitably set.

  According to a second invention, in the first invention, a floor panel formed by having a floor frame in which a plurality of joists are combined and the floor material is installed on the floor frame is arranged side by side. A plurality of floor panels are provided. The floor panels include a first floor panel having a first floor frame including the first joists and a second floor panel having a second floor frame including the second joists. The positioning means has a fixed portion fixed to the first floor panel side and a placement portion on which the second joists are placed.

  In buildings where floor panels are formed including multiple joists, the floor can be industrialized, but it is necessary to install floor panels that are larger and heavier than joists at the construction site. There is a concern that the work burden at the construction site will increase compared to the case where each is installed individually.

  On the other hand, according to the second invention, by performing an easy operation of placing the second joist of the floor panel on the placing portion of the positioning means, the second joist of the first joist in the vertical direction. Since positioning can be performed, the work burden can be effectively reduced when installing a floor panel that is larger and heavier than a joist alone at a construction site. Moreover, in the positioning means, since the fixing portion that determines the height position of the second joist is fixed to the first floor panel side, the relative height position of the second floor panel with respect to the first floor panel, that is, the first It is possible to easily set the relative height position of the second joist relative to the first joist.

  According to a third aspect, in the second aspect, in the first floor panel, a first floor material is installed on the first floor frame, and in the second floor panel, the second floor panel is the second floor panel. A second floor material is installed on the floor frame, and the second floor material has the upper surface of the second floor material by placing the second joist on the mounting portion. It is arrange | positioned in the position lower than the upper surface of the said 1st floor covering.

  According to the third invention, since the second floor panel has the second floor surface material, when the building equipment such as a bathroom unit is installed on the second floor panel, the building equipment is second. It can be properly fixed to the floor panel. And the relative height position of the building equipment with respect to the 1st floor material can be set appropriately using the fact that the 2nd floor material is arranged at a lower height position than the first floor material. . For example, when a bathroom unit is installed on the second floor panel as building equipment and the floor of the dressing room is formed by the first floor panel, the first floor material and the second floor material are at the same height position. Compared with the structure arrange | positioned, since the level | step difference of the floor surface of a dressing room and the floor surface of a bathroom unit becomes small, when entering / exiting a bathroom from a dressing room, the physical burden for straddling a level | step difference can be reduced.

  According to a fourth aspect, in the second or third aspect, the first joist and the second joist extend along a boundary portion between the first floor panel and the second floor panel, and each side surface. They are fixed to each other in a stacked state.

  According to the fourth invention, the first floor panel and the second floor panel can be firmly connected by fixing the first joist and the second joist. For this reason, even if only one of the first floor panel and the second floor panel is mounted on a building structure such as a structural wall, the other floor panel is preferably supported by one floor panel. Can do.

  In a fifth invention, in any one of the second to fourth inventions, the fixing portion is disposed at a position lower than the first joist.

  According to the fifth aspect, since the fixing portion of the positioning means is disposed at a position lower than the first joist, the fixing portion does not enter between the first joist and the second joist. Thereby, it can avoid that the relative position of the 2nd floor panel with respect to the 1st floor panel shift | deviates by the part which the fixing | fixed part is pinched in the arrangement direction of a 1st floor panel and a 2nd floor panel.

  In a sixth invention, in any one of the second to fifth inventions, the first floor panel and the second floor panel are provided between an upper floor and a lower floor adjacent to each other in the vertical direction, The first joist is installed on a lower floor wall portion that is a partition wall of the lower floor portion, and the fixing portion is disposed on the second joist side with respect to the lower floor wall portion.

  According to the sixth invention, since the fixing portion of the positioning means is disposed on the second joist side with respect to the lower floor wall portion, the fixing portion enters between the lower floor wall portion and the first joist. do not become. Thereby, in the up-down direction, it can avoid that the relative position of the 1st joist with respect to a lower floor wall part shift | deviates only by the part which the fixing | fixed part is pinched.

  In 7th invention, in 6th invention, the said fixing | fixed part is being fixed to the side surface of the said lower floor wall part.

  According to the seventh invention, the fixing part of the positioning means does not enter between the first joist and the second joist in the horizontal direction and enters between the lower floor wall part and the first joist in the vertical direction. It will not be in a state. Therefore, it can suppress that the installation position of a 2nd floor panel (2nd joist) shifts | deviates by presence of a fixed part on both a horizontal direction and an up-down direction on the basis of a lower floor wall part.

  In an eighth aspect based on the seventh aspect, an upper floor wall portion that is a partition wall of the upper floor portion and extends in parallel with the lower floor wall portion is disposed on the first joist. The second joists are arranged at positions that are not lined up and down with either the lower floor wall section or the upper floor wall section.

  When the first joist and the second joist have different height dimensions, a step is formed at the boundary of the joists, so the first joist and the second joist are between the lower floor wall and the upper floor wall. When the boundary part is arranged, both the first joist and the second joist can be fixed to the lower floor wall part, or the upper floor wall part can be placed on both the first joist and the second joist. It becomes difficult.

  On the other hand, according to the eighth invention, the boundary between the first joist and the second joist is not arranged between the lower floor wall and the upper floor wall. It becomes easy to fix the 1 joist and place the upper floor wall part on the first joist. Moreover, even in this case, since the positioning means is provided, the second joist can be arranged at an appropriate position with respect to the first joist.

  In a ninth invention, in any one of the second to eighth inventions, a bathroom unit is installed on the second floor panel, and the first floor panel can enter and exit the bathroom unit. It forms the floor of a simple dressing room.

  According to the ninth invention, since the bathroom unit is installed on the second floor panel and the floor of the dressing room is formed by the first floor panel, for example, the first floor material and the second floor material Compared with the configuration in which are arranged at the same height, the level difference between the floor surface of the dressing room and the floor surface of the bathroom unit is reduced. Therefore, it is possible to reduce the physical burden for straddling the steps when entering and leaving the bathroom from the dressing room.

Diagram showing building structure Longitudinal section around the boundary between bathroom and dressing room Longitudinal section around the boundary between the dressing room floor panel and bathroom floor panel The figure which shows the installation procedure of the bathroom floor panel Longitudinal sectional view around the boundary between another dressing room floor panel and bathroom floor panel Longitudinal sectional view around the boundary between another dressing room floor panel and bathroom floor panel

  Hereinafter, an embodiment embodying the present invention will be described with reference to the drawings. In this embodiment, the floor structure of the present invention is embodied in a two-story steel house constructed by a framed wall construction method. 1 is a diagram showing the structure of the building 10, FIG. 2 is a longitudinal sectional view around the boundary between the bathroom 15 and the dressing room 16, and FIG. 3 is a longitudinal section around the boundary between the dressing room floor panel 42A and the bathroom floor panel 42B. FIG. In FIG. 1, (a) shows a plan view of the second floor portion 12 of the building 10, (b) shows a sectional view taken along the line AA of (a), and (b) shows the unit bus 48. Is omitted. 2A is a sectional view taken along line BB in FIG. 1A, and FIG. 2B is a conventional diagram.

  As shown in FIGS. 1 (a) and 1 (b), a building 10 such as a house has a first floor portion 11 as a lower floor portion and a second floor portion 12 as an upper floor portion adjacent to the lower floor portion in the vertical direction. Have. The second floor portion 12 includes a bathroom 15, a dressing room 16 disposed next to the bathroom 15, and a corridor 17 disposed on the opposite side of the bathroom 15 across the dressing room 16. The bathroom 15 is partitioned by an outer wall 21 and an inner wall 22 of the building 10.

  The inner wall 22 is a partition wall that partitions the indoor space into a plurality of portions in each of the first floor portion 11 and the second floor portion 12. The inner wall 22 has a bathroom side wall 31 a that partitions the bathroom 15 and the dressing room 16 in the second floor portion 12, and a hallway side wall 31 b that partitions the dressing room 16 and the hallway 17. The bathroom side wall part 31a and the corridor side wall part 31b are opposed to each other with the dressing room 16 interposed therebetween, and the bathroom side wall part 31a is provided with a bathroom entrance 23 that allows entry and exit from the dressing room 16 to the bathroom 15. The corridor side wall 31b is provided with a corridor doorway 24 that allows entry into and exit from the dressing room 16 into the corridor 17.

  Moreover, the inner wall 22 has a bathroom-side lower wall portion 32a provided below the bathroom side wall portion 31a and a hallway-side lower wall portion 32b provided below the hallway side wall portion 31b in the first floor portion 11. ing. The first floor portion 11 has a first chamber 33 disposed below the bathroom 15, a second chamber 34 disposed below the dressing room 16, and a third chamber 35 disposed below the hallway 17. The bathroom-side lower wall portion 32a partitions the first chamber 33 and the second chamber 34, and the hallway-side lower wall portion 32b partitions the second chamber 34 and the third chamber 35. The bathroom-side lower wall portion 32a and the hallway-side lower wall portion 32b face each other with the second chamber 34 interposed therebetween. In the direction in which the bathroom side wall portion 31a and the hallway side wall portion 31b are arranged, the bathroom side wall portion 31a and the bathroom side lower wall portion 32a are arranged so as to overlap each other, and the hallway side wall portion 31b and the hallway side lower wall are arranged. The part 32b is arranged at a position overlapping with each other.

  The outer wall 21 has a first floor outer wall portion 37 disposed on the first floor portion 11 and a second floor outer wall portion 38 disposed on the second floor portion 12. The first-floor outer wall portion 37 faces the bathroom-side lower wall portion 32a across the first chamber 33 in the first-floor portion 11, and the second-floor outer wall portion 38 faces the bathroom side wall portion 31a across the bathroom 15 in the second-floor portion 12. Opposite to.

  Between the first floor portion 11 and the second floor portion 12, a second floor portion 40 that forms the floor surface of the second floor portion 12 is provided. A ceiling surface material 41 that forms the ceiling surface of the first floor portion 11 is provided below the second floor portion 40. The ceiling surface material 41 is formed of a plaster board or the like, and is supported by being suspended by the second-floor floor portion 40. In this case, the ceiling member 41 is installed in any of the first chamber 33, the second chamber 34, and the third chamber 35.

  The second floor 40 has a plurality of floor panels 42 arranged side by side. The floor panel 42 includes a floor frame 43 as a floor base and a floor surface material 44 installed on the floor frame 43. The floor material 44 is formed to include a lower ground material such as particle board or plywood and a finished surface material such as a flooring material stacked on the ground surface material, and is a rectangular plate material.

  The floor frame 43 has a plurality of joists 45 and 46, and these joists 45 and 46 are combined to form a rectangular frame. The outer joists 45 of the joists 45 and 46 extend along the peripheral edge of the floor surface material 44, and a plurality of outer joists 45 are combined so as to form an outline of the floor frame 43. The plurality of outer joists 45 include side joists and end joists that extend in directions orthogonal to each other, and a pair of side joists and end joists are provided. The inner joists 46 are arranged inside the outer joists 45 and are spanned between a pair of end joists among the plural outer joists 45.

  Both the outer joists 45 and the inner joists 46 are made of channel steel. The inner joist 46 has two channel steels arranged in parallel to each other, and these channel steels are fixed with the outer surfaces of the respective webs being overlapped. In the inner joist 46, the groove portions of the respective grooved steels are arranged with the respective grooved steels facing the respective groove portions on the opposite side. On the other hand, the outer joists 45 are formed of one channel steel, and the groove portions are arranged facing the inner joists 46 side. In addition, in one floor panel 42, the height dimensions of the inner joists 46 and the outer joists 45 are the same.

  In the plurality of floor panels 42, a dressing room floor panel 42 </ b> A that forms the floor portion of the dressing room 16 in the second floor 40, a bathroom floor panel 42 </ b> B that forms the floor portion of the bathroom 15, and a floor portion of the hallway 17 are formed. And a corridor floor panel 42C. The dressing room floor panel 42A and the bathroom floor panel 42B are arranged at adjacent positions, and are connected to each other at the boundary between the panels 42A and 42B. The corridor floor panel 42C is disposed on the opposite side of the bathroom floor panel 42B with the dressing room floor panel 42A interposed therebetween, and is connected to the dressing room floor panel 42A.

The dressing room floor panel 42A has a dressing room floor frame 43A and a dressing room floor material 44A, and the bathroom floor panel 42B has a bathroom floor frame 43B and a bathroom floor material 44B.
In this case, the changing room floor panel 42A corresponds to the first floor panel, the changing room floor frame 43A corresponds to the first floor frame, and the changing room floor material 44A corresponds to the first floor material. The bathroom floor panel 42B corresponds to the second floor panel, the bathroom floor frame 43B corresponds to the second floor frame, and the bathroom floor material 44B corresponds to the second floor material.

  A unit bath 48 as a building facility is installed in the bathroom 15. The unit bath 48 is a bathroom unit in which a bathroom floor pan 49, a bathtub, a bathroom wall, and a bathroom ceiling are integrated, and is installed on the bathroom floor panel 42B. Here, in the unit bath 48, a drain pipe, a leg portion for supporting the bathroom floor pan 49, and the like are provided below the bathroom floor pan 49, and thereby the unit bath 48 serving as a floor surface of the bathroom 15. The floor surface (the upper surface of the bathroom floor pan 49) is disposed at a position spaced apart from the bathroom floor panel 42B by a predetermined dimension. In this case, the floor surface of the unit bath 48 is arranged at a position higher than the floor surface of the dressing room 16, and a step between the floor surfaces occurs at the boundary between the bathroom 15 and the dressing room 16.

  For example, as in the conventional configuration shown in FIG. 2B, the height dimension H1 of the dressing room floor panel 42A is the same as the height dimension H1 of the bathroom floor panel 42B, and the upper surfaces of the floor panels 42A and 42B are the same. In the configuration in which the height positions are the same, the distance between the floor surface of the unit bath 48 and the bathroom floor panel 42B is the height dimension of the step between the floor surfaces at the boundary between the bathroom 15 and the dressing room 16 as it is. become.

  In contrast, in the present embodiment, as shown in FIG. 2A, the height dimension (thickness dimension) H2 of the bathroom floor panel 42B is made smaller than the height dimension H1 of the dressing room floor panel 42A ( H1> H2), the upper surface of the bathroom floor panel 42B is disposed at a position lower than the upper surface of the dressing room floor panel 42A. In this case, the level | step difference between floor surfaces produced in the boundary part of the bathroom 15 and the dressing room 16 is small by the part of the height position difference (value of H1-H2) of the bathroom floor panel 42B and the dressing room floor panel 42A. It has become. For this reason, when entering / exiting the bathroom 15 from the dressing room 16, the physical burden for straddling a level | step difference can be reduced.

  The difference in height between the dressing room floor panel 42A and the bathroom floor panel 42B is defined by the height of each floor frame 43 of the floor panels 42A and 42B. In this case, the dressing room floor panel 42A and the bathroom floor panel 42B are arranged at the same height on the lower surfaces (the lower ends of the joists 45, 46), and the height dimensions of the joists 45, 46 of the bathroom floor panel 42B. Is smaller than the height dimensions of the joists 45 and 46 of the dressing room floor panel 42 </ b> A, and a difference in the height dimension forms a step at the boundary between the bathroom 15 and the dressing room 16.

  Returning to the description of FIG. 1B, the dressing room floor panel 42 </ b> A and the bathroom floor panel 42 </ b> B are supported by the outer wall 21 and the inner wall 22. Here, not only the outer wall 21 is a structural wall such as a load bearing wall, but the wall portions 31a, 31b, 32a, and 32b of the inner wall 22 are also structural walls, particularly below the first floor portion 11. The walls 32a and 32b are support walls that support the second floor 40 from below. Incidentally, the bathroom side wall 31a and the corridor side wall 31b of the second floor portion 12 are support walls that support the ceiling and roof of the second floor portion 12 from below. In this case, the bathroom side wall portion 31a corresponds to the upper floor wall portion, and the bathroom side lower wall portion 32a corresponds to the lower floor wall portion.

  The outer wall 21 and the inner wall 22 are each formed by combining a plurality of wall panels 51. The wall panel 51 includes a wall frame 52 as a wall base and a wall surface material 53 attached to the wall frame 52. In the outer wall 21 and the inner wall 22, a wall surface material 53 that forms an indoor surface is formed of an interior material such as a gypsum board, and a wall surface material 53 that forms an outdoor surface is formed of an exterior material such as a siding board. . In the wall panel 51, wall surface materials 53 are arranged on both sides of the wall frame 52 in the wall thickness direction. However, in the second-floor outer wall portion 38 and the bathroom side wall portion 31a arranged with the bathroom 15 in between, the wall frame 52 is provided. The wall surface material 53 is not arranged on the bathroom 15 side (unit bath 48 side).

  The wall frame 52 has a runner 55 extending in the wall width direction and a stud 56 extending in the wall height direction, and a plurality of these runners 55 and studs 56 are combined to form a rectangular frame. Is formed. Both the runner 55 and the stud 56 are formed of channel steel, and the runner 55 and the stud 56 extending along the peripheral edge of the wall panel 51 are arranged with the respective groove portions facing the inside of the wall frame 52. Has been. The plurality of runners 55 of the wall frame 52 include an upper runner 55a that connects the upper ends of the pair of studs 56 and a lower runner 55b that connects the lower ends of the pair of studs 56. The lower runner 55b is installed with its groove facing upward.

  In the building 10, horizontal beams 58 are provided on the second floor 40. The floor beams 58 are arranged side by side on the respective floor panels 42, and are installed between the wall panel 51 of the second-floor outer wall portion 38 and the wall panel 51 of the first-floor outer wall portion 37. A wall surface material 53 constituting an exterior material is attached to the outdoor side surface of the floor beam 58, and the wall surface material 53 forms an outer wall surface between the upper and lower wall panels 51. The floor beam 58 is formed of channel steel in the same manner as the joists 45 and 46, and has the same height as the joists 45 and 46 of the dressing room floor panel 42A. The floor beam 58 has two channel steels arranged in parallel to each other, and these channel steels are fixed in a state where the respective groove portions face each other. The thickness dimension of the floor beam 58 is the same as the thickness dimension of the wall panel 51 of the outer wall 21.

  The dressing room floor panel 42A is installed on the bathroom-side lower wall portion 32a and the hallway-side lower wall portion 32b, and is stretched over the lower wall portions 32a and 32b. In the dressing room floor panel 42A, the end portion on the bathroom 15 side is placed on the bathroom-side lower wall portion 32a, and the end portion on the corridor 17 side is placed on the corridor-side lower wall portion 32b. . In this case, the outer joists 45 of the dressing room floor panel 42A are placed on the upper runners 55a of the lower wall portions 32a and 32b.

  Between the dressing room 16 and the hallway 17, the end of the hallway floor panel 42 </ b> C is placed on the hallway side lower wall portion 32 b in addition to the end of the dressing room floor panel 42 </ b> A. The boundary part of 42C is arrange | positioned above the corridor side lower wall part 32b. The hallway side wall 31b disposed above the hallway side lower wall 32b is installed on the boundary between the dressing room floor panel 42A and the hallway floor panel 42C. Here, the corridor floor panel 42C has the same height as the dressing room floor panel 42A, and the upper surfaces of the floor panels 42A and 42C form a continuous surface. For this reason, it is possible to install the corridor side wall 31b in a state of straddling the boundary between the floor panels 42A and 42C.

  On the other hand, between the bathroom 15 and the dressing room 16, only the dressing room floor panel 42A is placed on the bathroom side lower wall portion 32a, and the end of the bathroom floor panel 42B is not placed. Here, as described above, since a step between the upper surfaces is formed at the boundary between the bathroom floor panel 42B and the dressing room floor panel 42A, the bathroom side wall 31a is defined as the boundary between the floor panels 42A and 42B. If installed so as to straddle, a separation part is formed between the lower end surface of the bathroom side wall part 31a and the upper surface of the bathroom floor panel 42B, and there is a concern that the fixing strength of the bathroom side wall part 31a with respect to the second floor part 40 may be reduced. Is done. On the other hand, in the configuration in which the bathroom side wall portion 31a and the bathroom side lower wall portion 32a overlap vertically, the bathroom floor panel 42B is not placed on the bathroom side lower wall portion 32a, so that the bathroom side wall portion 31a It becomes possible to place the entire lower end surface on the upper surface of the dressing room floor panel 42 </ b> A, whereby the fixing strength of the bathroom side wall 31 a with respect to the second floor 40 can be suitably secured.

  The bathroom floor panel 42 </ b> B is provided between the dressing room floor panel 42 </ b> A and the outer wall 21, and is stretched between the dressing room floor panel 42 </ b> A and the outer wall 21. The bathroom floor panel 42B is fixed to the floor beam 58 in a state where the end surface on the outdoor side is superimposed on the indoor side surface of the floor beam 58, and the end surface on the dressing room 16 side is superimposed on the end surface of the dressing room floor panel 42A. In this state, it is fixed to the dressing room floor panel 42A.

  As shown in FIGS. 1B and 3, the bathroom floor panel 42 </ b> B and the dressing room floor panel 42 </ b> A are fixed to each other with outer joists 45. Here, among the outer joists 45 that are fixed to each other, those that the undressing room floor panel 42A has are referred to as first joists 45A, and those that the bathroom floor panel 42B has are referred to as second joists 45B. The first joists 45A and the second joists 45B are fixed in a state where the outer surfaces of the respective webs are overlapped. In this case, the lower surface of the first joist 45A and the lower surface of the second joist 45B are arranged at the same height, and these lower surfaces form the same plane.

  The bathroom floor panel 42 </ b> B has a third joist 45 </ b> C fixed to the floor beam 58. The third joist 45C is one of the outer joists 45 of the bathroom floor frame 43B, and the third joist 45C is attached to the floor beam 58 in a state where the outer side surface of the web is overlapped with the indoor side surface of the floor beam 58. It is fixed. In this case, the lower surface of the third joist 45C and the lower surface of the floor beam 58 are arranged at the same height, and these lower surfaces form the same plane.

  In addition, at the boundary between the dressing room floor panel 42A and the hallway floor panel 42C, the outer joists 45 of the floor panels 42A and 42C are the same as the first joists 45A and the second joists 45B being fixed to each other. Are fixed to each other.

  In this embodiment, the bathroom floor panel 42B is not placed on either the bathroom side lower wall portion 32a or the first floor outer wall portion 37, but is placed on the brackets 61 and 62 that support the bathroom floor panel 42B from below. It has been. The brackets 61 and 62 have a fixed portion 64 fixed to the building structure and a placement portion 65 on which the bathroom floor panel 42B is placed. The fixed portion 64 and the placement portion 65 are plate portions extending in directions orthogonal to each other, and the brackets 61 and 62 are formed of angle steel having an L-shaped cross section.

  Of the brackets 61 and 62, the first bracket 61 supports the end of the bathroom floor panel 42B on the dressing room 16 side from below, and the second bracket 62 is the end of the bathroom floor panel 42B on the outdoor side. Is supported from below. The 1st bracket 61 is attached to the bathroom side lower wall part 32a as a building structure. In the first bracket 61, the fixing portion 64 is fixed to the side surface of the bathroom 15 of the bathroom side lower wall portion 32a, and the placement portion 65 extends in the horizontal direction toward the bathroom 15 side.

  The fixing portion 64 is fixed to the wall frame 52 of the bathroom side lower wall portion 32a. At the upper end portion of the bathroom-side lower wall portion 32a, the fixing portion 64 is overlapped with the flange of the upper runner 55a in a state of entering between the wall frame 52 and the wall surface material 53. In this case, a fixing tool such as a screw is driven into the upper runner 55 a via the wall surface material 53 and the fixing portion 64.

  The upper surface of the mounting portion 65 is disposed at the same height as the upper surface of the upper runner 55a (the upper end surface of the bathroom-side lower wall portion 32a). For this reason, the bathroom floor panel 42B is simply placed on the placing portion 65, and the lower surface of the bathroom floor panel 42B is aligned with the lower surface of the dressing room floor panel 42A.

  A second joist 45B of the bathroom floor panel 42B is placed on the placing portion 65, and the placing portion 65 is fixed to the second joist 45B by a fixing tool such as a screw. In this case, the relative displacement of the bathroom floor frame 43B with respect to the placement part 65 is restricted by the fixture, and therefore, generation of a rubbing sound between the placement part 65 and the bathroom floor frame 43B can be prevented.

  The second bracket 62 is attached to the first floor outer wall portion 37 as a building structure. In the second bracket 62, the fixing portion 64 is fixed to the side surface (indoor side surface) of the bathroom 15 of the first floor outer wall portion 37, and the placing portion 65 extends in the horizontal direction toward the bathroom 15 side. The fixed portion 64 is fixed to the wall frame 52 of the first floor outer wall portion 37. Further, a third joist 45C of the bathroom floor panel 42B is placed on the placing portion 65, and the placing portion 65 is fixed to the third joist 45C.

  In addition, about the 2nd bracket 62, the fixing structure of the fixing | fixed part 64 with respect to the wall frame 52 of the 1st-floor outer wall part 37, and the fixing structure of the mounting part 65 with respect to the 3rd joist 45C of the bathroom floor panel 42B are bathroom side lower wall parts. The fixing structure of the fixing portion of the first bracket 61 with respect to 32a and the fixing structure of the mounting portion 65 of the first bracket 61 with respect to the second joist 45B of the bathroom floor panel 42B are the same.

  Next, the construction procedure of the bathroom floor part of the second floor 40 will be described with reference to FIG. FIG. 4 is a diagram showing an installation procedure of the bathroom floor panel 42B. In addition, in FIG. 4, illustration of the wall surface material 53 is abbreviate | omitted.

  First, as shown in FIG. 4A, in a state where the outer wall 21 and the bathroom side lower wall part 32a are constructed, a dressing room floor panel 42A manufactured at the factory is placed on the bathroom side lower wall part 32a, The dressing room floor panel 42A is fixed to the bathroom side lower wall portion 32a using a fixing tool such as the above.

  Thereafter, as shown in FIG. 4B, the first bracket 61 is attached to the bathroom side lower wall portion 32 a and the second bracket 62 is attached to the first floor outer wall portion 37 of the outer wall 21. Here, a fixing tool such as a screw is passed through the fixing portion 64 of the first bracket 61 and driven into the upper runner 55a of the bathroom-side lower wall portion 32a, and another fixing tool is passed through the fixing portion 64 of the second bracket 62. Then, it is driven into the upper runner 55a of the first floor outer wall portion 37.

  Then, as shown in FIG. 4 (c), the bathroom floor panel 42B manufactured in the factory is placed (temporarily placed) on the first bracket 61 and the second bracket 62, and the bathroom floor panel 42B is placed on the dressing room floor. The panel 42A and the floor beam 58 are fixed. Here, a fixing tool such as a screw is driven through the second joist 45B into the first joist 45A, and another fixing tool is driven through the third joist 45C into the floor beam 58. Here, before the bathroom floor panel 42B is fixed, the bathroom floor panel 42B is placed on the brackets 61 and 62 to perform both alignment and position maintenance. For the purpose of holding the position, there is no need to suspend the bathroom floor panel 42B with a heavy machine such as a crane.

  Moreover, the brackets 61 and 62 are fixed to the bathroom floor panel 42B. Here, a fixing tool such as a screw is passed through the mounting portion 65 of the first bracket 61 and driven into the second joist 45B of the bathroom floor panel 42B, and another mounting tool is mounted on the mounting portion 65 of the second bracket 62. Penetration and driving into the third joist 45C of the bathroom floor panel 42B.

  After fixing the bathroom floor panel 42B, the wall panel 51 is erected on the dressing room floor panel 42A to form the bathroom side wall 31a, and the unit bath 48 is installed on the bathroom floor panel 42B.

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

  Since the height position of the second joist 45B of the bathroom floor panel 42B relative to the first joist 45A of the dressing room floor panel 42A is set by the first bracket 61 on which the second joist 45B is placed, the first joist 45A The second joist 45B can be fixed easily. Moreover, since the second joist 45B is supported by the first bracket 61, when the second joist 45B is fixed to the first joist 45A, it is necessary to suspend and support the second joist 45B by a heavy machine such as a crane. It is not necessary to temporarily fix the second joist 45B to the first joist 45A using a dedicated tool. Therefore, it is possible to reduce the work burden when temporarily fixing the second joists 45B to the first joists 45A.

  As described above, when the step portion of the floor surface is formed at the boundary between the dressing room 16 and the bathroom 15 using the difference in height position between the first joist 45A and the second joist 45B, the height of the step is increased. The thickness dimension can be suitably set.

  After the installation of the dressing room floor panel 42A, the second joist 45B of the bathroom floor panel 42B is easily placed on the mounting portion 65 of the first bracket 61, so that the height of the second joist 45B relative to the first joist 45A is increased. You can set the position. For this reason, compared with the second joist 45B alone, when installing a bathroom floor panel 42B having a large extension dimension extending in a direction away from the first joist 45A at the construction site, the work load is effectively reduced. it can. Moreover, since the first bracket 61 on which the second joist 45B is mounted is fixed to the first joist 45A side, it is possible to increase the work accuracy when setting the height position of the second joist 45B with respect to the first joist 45A. it can.

  Since the bathroom floor panel 42B has the bathroom floor material 44B, the operation of installing the unit bath 48 on the bathroom floor panel 42B can be facilitated. Moreover, since the bathroom floor panel 42B can be installed at a position lower than the dressing room floor panel 42A according to the level difference between the first joist 45A and the second joist 45B, the floor surface of the dressing room 16 and the floor surface of the unit bath 48 Can be reduced.

  Since the first joists 45A and the second joists 45B are fixed on the outer surfaces of the respective webs, the fixing strength of the bathroom floor panel 42B with respect to the dressing room floor panel 42A can be increased. For this reason, even if the bathroom floor panel 42B is not placed on the bathroom side lower wall portion 32a, the bathroom floor panel 42B can be installed in an appropriate state.

  Since the fixing portion 64 of the first bracket 61 is disposed at a position lower than the first joist 45A, the fixing portion 64 does not enter between the first joist 45A and the second joist 45B. Therefore, in the direction in which the bathroom 15 and the dressing room 16 are arranged, it can be avoided that the position of the bathroom floor panel 42B with respect to the dressing room floor panel 42A is shifted to the bathroom 15 side by the amount that the fixing portion 64 is sandwiched. For example, when the fixing portion 64 is present side by side on the first joist 45A, when the bathroom floor panel 42B is installed after the installation of the dressing room floor panel 42A and the floor beam 58 (outer wall 21), the dressing room floor panel 42A. There is a concern that the installation space of the bathroom floor panel 42B is reduced by the thickness dimension of the fixing portion 64 between the floor beam 58 and the floor beam 58, and the bathroom floor panel 42B does not enter the installation space. Is disposed at a position shifted vertically from the first joist 45A.

  Since the fixing portion 64 of the first bracket 61 is disposed on the second joist 45B side with respect to the bathroom-side lower wall portion 32a, the fixing portion 64 enters between the bathroom-side lower wall portion 32a and the first joist 45A. It does not become a state. Therefore, it can avoid that the relative height position of 45 A of 1st joists with respect to the bathroom side lower wall part 32a slip | deviates only by the part which the fixing | fixed part 64 is pinched. For example, when the fixing portion 64 is vertically arranged on the first joist 45A, when the bathroom side wall portion 31a is installed after the installation of the dressing room floor panel 42A and the roof, between the dressing room floor panel 42A and the roof. There is a concern that the installation space of the bathroom side wall portion 31a (wall panel 51) is reduced by the thickness dimension of the fixed portion 64, and the bathroom side wall portion 31a does not enter the installation space, but the fixed portion 64 is the first. This right can be eliminated if it is arranged at a position shifted to the left and right with respect to the joist 45A.

  Since the fixing portion 64 of the first bracket 61 is fixed to the bathroom-side lower wall portion 32a, it is possible to avoid both the fixing portion 64 being arranged side by side and vertically arranged on the first joist 45A.

  Between the bathroom side lower wall part 32a and the bathroom side wall part 31a, the first joist 45A (dressing room floor panel 42A) is provided, and the second joist 45B (bathroom floor panel 42B) is not provided. The first joist 45A can be properly fixed to the lower side wall 32a, and the bathroom side wall 31a can be properly installed on the first joist 45A. In addition, even in this case, the second joist 45B can be placed at an appropriate height with respect to the first joist 45A by placing the second joist 45B on the placing portion 65 of the first bracket 61. .

  Since the first bracket 61 is not sandwiched between the bathroom-side lower wall portion 32a and the dressing room floor panel 42A or between the dressing room floor panel 42A and the bathroom floor panel 42B, the second joist 45B Can be removed from the bathroom side lower wall portion 32a and the bathroom floor panel 42B by releasing the fixation of the first bracket 61 to the bathroom side lower wall portion 32a and the bathroom floor panel 42B. it can. For this reason, it can avoid that the 1st bracket 61 obstructs the attachment of the wall surface material 53 in the bathroom side lower wall part 32a, or the attachment of the ceiling surface material 41. FIG.

  Similarly, since the second bracket 62 is not sandwiched between the first floor outer wall portion 37 and the bathroom floor panel 42B or between the bathroom floor panel 42B and the floor beam 58, the third joist 45C is attached. After fixing to the floor beam 58, the second bracket 62 is released from the first floor outer wall portion 37 and the floor beam 58, and can be detached from the first floor outer wall portion 37 and the floor beam 58. For this reason, it can avoid that the 2nd bracket 62 obstructs the attachment of the wall surface material 53 in the 1st-floor outer wall part 37, or the attachment of the ceiling surface material 41. FIG.

[Other Embodiments]
The present invention is not limited to the description of the above embodiment, and may be implemented as follows, for example.

  (1) In the said embodiment, although the fixing | fixed part 64 of the 1st bracket 61 was being fixed to the bathroom side lower wall part 32a, this fixing | fixed part 64 is being fixed to 45 A of 1st joists of the bathroom floor panel 42B. Also good. For example, as shown to Fig.5 (a), it is set as the structure by which the fixing | fixed part 64 of the 1st bracket 61 was fixed to the outer surface of the web of 1st joist 45A. In this configuration, the fixing portion 64 is inserted between the first joist 45A and the second joist 45B, and the bathroom floor panel 42B moves away from the dressing room floor panel 42A by the thickness dimension of the fixing portion 64. It is arranged at the position. In the fixing portion between the first joist 45A and the second joist 45B, a fixing tool such as a screw penetrating the second joist 45B and the fixing portion 64 is driven into the web of the first joist 45A.

  Moreover, in this structure, the lower surface of the mounting part 65 of the 1st bracket 61 is arrange | positioned in the same height position as the lower surface of 45 A of 1st joists, and, thereby, the lower surface of 2nd joists 45B is the 1st joists 45A. It is arranged at a position higher than the lower surface. In this case, the first bracket 61 does not protrude below the bathroom floor panel 42B, and the first bracket 61 and the wall surface material 53 do not interfere with each other on the bathroom-side lower wall portion 32a. A wall material 53 is also attached to the portion.

  Further, as shown in FIG. 5B, the fixing portion 64 of the first bracket 61 is fixed to the lower surface of the lower flange of the first joist 45A. In this configuration, the fixing portion 64 is in a state of entering between the first joist 45A and the bathroom-side lower wall portion 32a, and the dressing room floor panel 42A has a bathroom-side lower wall corresponding to the thickness dimension of the fixing portion 64. It arrange | positions in the position spaced apart upward from the part 32a. In this case, in a fixing portion between the bathroom side lower wall portion 32a and the dressing room floor panel 42A, a fixing tool such as a screw penetrating the upper runner 55a and the fixing portion 64 from below is driven into the lower flange of the first joist 45A. It is.

  In this configuration, the first bracket 61 straddles the boundary between the first joist 45A and the second joist 45B in the horizontal direction, and both the joists 45A and 45B are placed on the first bracket 61. Yes. In this case, the 1st bracket 61 does not protrude below the upper end surface of bathroom side lower wall part 32a, and the 1st bracket 61 and the 1st bracket 61 may interfere in bathroom side lower wall part 32a. Therefore, the wall surface material 53 is also attached to the upper end portion of the wall frame 52.

  In addition, the dressing room floor panel 42A may not be placed on the bathroom-side lower wall portion 32a. For example, as shown to Fig.6 (a), (b), it is set as the structure without the bathroom side lower wall part 32a. The configuration of FIG. 6A is a configuration in which the bathroom side lower wall portion 32a is not provided in the configuration of FIG. 5A, and the configuration of FIG. 6B is a configuration of the bathroom in the configuration of FIG. The side lower wall portion 32a is not provided.

  (2) In the above embodiment, the first joist 45A is included in the dressing room floor panel 42A and the second joist 45B is included in the bathroom floor panel 42B. However, the floor panel includes these joists 45A and 45B. 42 may not be provided in the dressing room 16 and the bathroom 15. For example, in the apartment house, the first floor panel including the first joists 45A is provided in the dwelling unit, and the second floor panel including the second joists 45B is provided in the common passage. In this configuration, the floor surface of the dwelling unit is arranged at a position higher than the floor surface of the common passage, and the difference between the height positions of the first joist 45A and the second joist 45B is used to A step portion between the floor surfaces is formed at the boundary portion.

  (3) In the above-described embodiment, the second-floor floor portion 40 is configured by using a plurality of floor panels 42 obtained by unitizing a plurality of joists 45, 46 and floor surface material 44. However, these joists 45, 46 and floor surfaces are used. The material 44 may not be unitized. For example, after the first joist 45A is installed on the bathroom-side lower wall portion 32a and the second joist 45B is fixed to the first joist 45A, another outer joist 45 or a dressing room floor surface is attached to the first joist 45A. Material 44A may be attached.

  (4) In the above embodiment, the third joists 45C of the bathroom floor panel 42B are arranged side by side on the floor beams 58, but the third joists 45C may be arranged below or above the floor beams 58. . For example, the third joist 45C is configured to enter between the wall panel 51 and the floor beam 58 of the first floor outer wall portion 37. In this configuration, since the third joist 45C can be installed on the first-floor outer wall portion 37, the height position of the third joist 45C can be easily set even if the second bracket 62 is not provided. it can.

  DESCRIPTION OF SYMBOLS 10 ... Building, 15 ... Bathroom, 16 ... Dressing room, 31a ... Bathroom side wall part as upper floor wall part, 32a ... Bathroom side lower wall part as lower floor wall part, 40 ... Second floor floor part, 42 ... Floor panel, 42 ... Floor panel, 42A ... Undressing room floor panel as first floor panel, 42B ... Bathroom floor panel as second floor panel, 43 ... Floor frame, 43A ... Undressing room floor frame as first floor frame, 43B ... Bathroom floor frame as second floor frame, 44 ... floor surface material, 44A ... dressing room floor surface material as first floor surface material, 44B ... bathroom floor surface material as second floor surface material, 45 ... as joist Outer joists, 45A ... first joists, 45B ... second joists, 46 ... inner joists as joists, 48 ... unit baths as bathroom units, 61 ... first brackets as positioning means, 64 ... fixing portions, 65 ... mounted Place.

Claims (9)

A floor structure of a building in which flooring materials are installed on a plurality of joists provided side by side,
The plurality of joists include a first joist in which one of the two floor materials is fixed, and a second joist in which the other floor material is fixed,
The second joists are fixed to the first joists with fasteners provided through the second joists, and has a height dimension smaller than the first joist,
When the second joist is fixed to the first joist on the floor of the building using the fixture, the second joist is supported up and down by supporting the second joist from below. A building floor structure, characterized in that positioning means for positioning in a direction is provided. A plurality of floor panels each having a floor frame in which a plurality of joists are combined and formed by placing the floor material on the floor frame are provided side by side. A first floor panel having a first floor frame including one joist, and a second floor panel having a second floor frame including the second joist,
2. The building floor according to claim 1, wherein the positioning means includes a fixed portion fixed to the first floor panel side and a placement portion on which the second joists are placed. Construction. In the first floor panel, a first floor material is installed on the first floor frame,
In the second floor panel, a second floor material is installed on the second floor frame,
The second floor material is placed at a position where the upper surface of the second floor material is lower than the upper surface of the first floor material by placing the second joist on the mounting portion. The building floor structure according to claim 2, wherein the building floor structure is a thing.   The first joist and the second joist are fixed to each other in a state where they extend along a boundary portion between the first floor panel and the second floor panel and the respective side surfaces are overlapped with each other. The floor structure of a building according to claim 2 or 3, wherein   The building floor structure according to any one of claims 2 to 4, wherein the fixed portion is disposed at a position lower than the first joist. The first floor panel and the second floor panel are provided between an upper floor and a lower floor adjacent to each other in the vertical direction,
The first joist is installed on a lower floor wall portion that is a partition wall of the lower floor portion,
The building floor structure according to any one of claims 2 to 5, wherein the fixed portion is disposed on the second joist side with respect to the lower floor wall portion.   The floor structure of a building according to claim 6, wherein the fixed portion is fixed to a side surface of the lower floor wall portion. On the first joist, an upper floor wall portion that is a partition wall of the upper floor portion and extends in parallel with the lower floor wall portion is installed at a position overlapping the lower floor wall portion in the vertical direction And
The floor structure of a building according to claim 7, wherein the second joists are arranged at positions where neither the lower floor wall portion nor the upper floor wall portion is lined up and down. A bathroom unit is installed on the second floor panel,
The floor structure of a building according to any one of claims 2 to 8, wherein the first floor panel forms a floor surface of a dressing room capable of entering and exiting the bathroom unit.

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