JP7101154B2 - Skip floor support structure and construction method - Google Patents

Description

The present invention relates to a support structure for a skip floor and a construction method.

Conventionally, there is a so-called skip-floor type building in which the height of some floors (floor beams and floor supports that support the floor) is different from the height of the floor that is the standard of the floor in the building. For example, in a steel-framed building, a skip floor can be easily installed by attaching a floor beam or a floor support to an arbitrary height in a steel column (see, for example, Patent Documents 1 and 2).

Japanese Unexamined Patent Publication No. 2012-007291 JP-A-2015-127503

However, in the case of a building based on a wooden frame, the floor frame constituting the skip floor must be fixed to the wall consisting of the frame such as columns. Therefore, it is necessary to prepare beams and columns that match the height of the skip floor at the place where the floor framework that constitutes the skip floor is fixed, and it is difficult to adopt structural plywood and braces that form the bearing wall. , It may not be possible to build a bearing wall. In addition, if the bearing wall cannot be partially constructed, the bearing wall will be constructed at another location, which causes design restrictions, and it is necessary to perform structural calculation in consideration of the skip floor. Therefore, it took time and effort at the design stage.

The present invention has been made in view of the above circumstances, and an object thereof is to allow the skip floor and the bearing wall to coexist and to easily perform structural calculation of a building.

The invention according to claim 1, for example, as shown in FIGS. 1 to 10, is intermediate in the vertical direction among a plurality of columns 20, 21 and 22 constituting the structural frame of the building 1 constructed by the wooden frame construction method. It is a support structure of the skip floor 15 provided at the position, and is
A face material 26 is attached to at least the surface of the plurality of pillars 20, 21 and 22 on the side where the skip floor 15 is provided.
The skip floor 15 is
Floor base plywood 34 and
Floor receiving portions 32, 33 provided along the face material 26 and supporting the end portions of the floor base plywood 34, and
A plurality of floor beams 30 which are fixed to the plurality of columns 20, 21 and 22 and support the floor base plywood 34, and are provided.
The floor receiving portions 32 and 33 are
The first floor receiving portion 32 arranged on the surface of the face material 26 opposite to the skip floor 15 and fixed to the structural frame,
A second floor receiving portion that is arranged on the surface of the facing material 26 on the side of the skip floor 15 and is fixed to the facing material 26 and the first floor receiving portion 32 to receive the end portion of the floor base plywood 34. 33 and
The second floor receiving portion 33 and the floor beam 30 are arranged side by side, and the upper surface of the second floor receiving portion 33 and the upper surface of the floor beam 30 are set to the same height. It is a feature.

According to the invention of claim 1, the floor receiving portions 32 and 33 are the first floor receiving portion 32 arranged on the surface of the face material 26 opposite to the skip floor 15 and fixed to the structural frame. The second floor receiving portion 33, which is arranged on the surface of the facing material 26 on the side of the skip floor 15 and is fixed to the facing material 26 and the first floor receiving portion 32 and receives the end portion of the floor base plywood 34. Therefore, the second floor receiving portion 33 is incorporated into the structural frame via the facing material 26 and the first floor receiving portion 32 without cutting the face material 26 at the position where the second floor receiving portion 33 is arranged. Can be in a state.
When, for example, a structural plywood is used as the face material 26, the structural skeleton to which the face material 26 is attached can be sufficiently functioned as bearing walls 11, 12, 13. Further, the floor base plywood 34 constituting the skip floor 15 can be reliably supported. Therefore, the skip floor 15 and the bearing walls 11, 12, and 13 can coexist, and the structural calculation of the building 1 can be easily performed.

The invention according to claim 2 has the support structure of the skip floor 15 according to claim 1, as shown in FIGS. 1 to 10, for example.
The face material 26 is a structural plywood 26.
The structural plywood 26 is attached to at least the surface of the plurality of columns 20, 21 and 22 on the side where the skip floor 15 is provided to form bearing walls 11, 12 and 13.
The skip floor 15 is characterized in that it is provided between a plurality of bearing walls 11, 12, 13 surrounding the skip floor 15.

According to the invention of claim 2, since the skip floor 15 is provided between the plurality of bearing walls 11, 12, 13 surrounding the skip floor 15, the plurality of bearing walls 11, 12, 13 are provided. Will be supported reliably and stably.

The invention according to claim 3 has the support structure of the skip floor 15 according to claim 1 or 2, as shown in FIGS. 6 and 7, for example.
A brace 25 is provided between the plurality of pillars 20, 21 and 22, and a brace 25 is provided.
The first floor receiving portion 32 is characterized in that it is bridged and fixed between the plurality of pillars 20, 21, 22, or between the pillars 20, 21, 22, and the brace 25.

According to the invention of claim 3, since the brace 25 is provided between the plurality of columns 20, 21 and 22, the brace 25 is included in the structural skeleton of the building 1. Therefore, the structural skeleton provided with the brace 25 can function as the bearing walls 11, 12, 13.
Further, since the first floor receiving portion 32 is bridged and fixed between a plurality of columns 20, 21, 22, or between the columns 20, 21, 22, and the brace 25, the bearing capacity provided with the brace 25 is provided. Even if the walls 11, 12, and 13 can coexist with the skip floor 15, the structural calculation of the building 1 can be easily performed.

The invention according to claim 4 has, for example, as shown in FIG. 9, in the support structure of the skip floor 15 according to any one of claims 1 to 3.
The second floor receiving portion 33 is adhered to the surface of the face material 26 on the side of the skip floor 15, and is screwed to the face material 26 and the first floor receiving portion 32. ..

According to the invention of claim 4, the second floor receiving portion 33 is adhered to the surface of the face material 26 on the skip floor 15 side, and is screwed to the face material 26 and the first floor receiving portion 32. Therefore, the second floor receiving portion 33 can improve the integrity with the face material 26 and can reliably transmit the load of the skip floor 15 to the structural frame.

The invention according to claim 5 is the support structure of the skip floor 15 according to any one of claims 1 to 4, as shown in FIGS. 7 and 8, for example.
The face material 26 is characterized in that a notch 26a is formed in the face member 26 so as to be in contact with the outer peripheral surface of the end portion fixed to the plurality of columns 20, 21 and 22 in the plurality of floor beams 30. do.

According to the invention according to claim 5, the face material 26 is formed with a notch 26a that fits in contact with the outer peripheral surface of the end portion fixed to the plurality of columns 20, 21, 22 in the plurality of floor beams 30. Therefore, the face member 26 can be attached to the plurality of columns 20, 21 and 22 in a state where the plurality of floor beams 30 are securely fixed to the plurality of columns 20, 21 and 22. As a result, the skip floor 15 and the bearing walls 11, 12, and 13 can coexist.

The invention according to claim 6 is a wooden frame construction method in which the skip floor 15 in the support structure of the skip floor 15 according to any one of claims 1 to 5, as shown in FIGS. 4 to 10, for example. It is a construction method of a skip floor 15 formed at an intermediate position in the vertical direction among a plurality of pillars 20, 21 and 22 constituting the structural frame of the building 1 constructed by the above.
A step of fixing the plurality of floor beams 30 to the plurality of columns 20, 21, 22 and
The step of fixing the first floor receiving portion 32 to the structural frame, and
A step of attaching the face material 26 to at least the surface of the plurality of pillars 20, 21 and 22 on the side where the skip floor 15 is provided.
A step of arranging the second floor receiving portion 33 on the surface of the facing material 26 on the side of the skip floor 15 and fixing the second floor receiving portion 33 to the facing material 26 and the first floor receiving portion 32.
It is characterized by having a step of placing and attaching the floor base plywood 34 on the floor beam 30 and the second floor receiving portion 33.

According to the invention of claim 6, the floor receiving portions 32 and 33 are the first floor receiving portion 32 arranged on the surface of the face material 26 opposite to the skip floor 15 and fixed to the structural frame. The second floor receiving portion 33, which is arranged on the surface of the facing material 26 on the side of the skip floor 15 and is fixed to the facing material 26 and the first floor receiving portion 32 and receives the end portion of the floor base plywood 34. Therefore, the second floor receiving portion 33 is incorporated into the structural frame via the facing material 26 and the first floor receiving portion 32 without cutting the face material 26 at the position where the second floor receiving portion 33 is arranged. Can be in a state.
When, for example, a structural plywood is used as the face material 26, the structural skeleton to which the face material 26 is attached can be sufficiently functioned as bearing walls 11, 12, 13. Further, the floor base plywood 34 constituting the skip floor 15 can be reliably supported. Therefore, the skip floor 15 and the bearing walls 11, 12, and 13 can coexist, and the structural calculation of the building 1 can be easily performed.

According to the present invention, the skip floor and the bearing wall can coexist, and the structural calculation can be easily performed.

It is a vertical sectional view which shows the outline of a building. It is an enlarged sectional view which shows the vicinity of a garage and a storage room when the building of FIG. 1 is seen from the front. It is an enlarged view of the part A circled in FIG. It is a perspective view for demonstrating the construction method of a skip floor. It is a perspective view for demonstrating the construction method of a skip floor. It is a perspective view for demonstrating the construction method of a skip floor. It is a perspective view for demonstrating the construction method of a skip floor. It is a perspective view for demonstrating the construction method of a skip floor. It is a perspective view for demonstrating the construction method of a skip floor. It is a perspective view for demonstrating the construction method of a skip floor.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, although the embodiments described below are provided with various technically preferable limitations for carrying out the present invention, the technical scope of the present invention is not limited to the following embodiments and illustrated examples. do not have.

In FIG. 1, reference numeral 1 indicates a building. This building 1 is a three-story wooden house constructed by the wooden frame construction method (conventional construction method). The roof is a flat roof, but it may be a gable roof or other sloped roof.
A built-in type garage 2 (also referred to as a built-in garage or an inner garage) is provided on the outside of the first floor of the building 1. At the back of the garage 2, an external storage portion 2a that can be accessed from the garage 2 is provided.
Further, above the outdoor side end of the garage 2, a balcony 3 is provided which is set at a height from the second floor (floor 2F of the second floor) of the building 1 to the eaves and can be accessed from the second floor. The lower surface of the floor portion of the balcony 3 is located above the ceiling 2c of the garage 2.

FIG. 2 is an enlarged cross-sectional view showing the vicinity of the garage 2 when the building 1 shown in FIG. 1 is viewed from the front side. The garage 2 has a floor surface GF set lower than the floor 1F of the first floor in the building 1, and the ceiling height is higher than, for example, when the height of the floor surface GF is made the same as the floor 1F of the first floor. It has become. Therefore, it is easy to park the vehicle in the garage 2, and it is easy for people to pass and get on and off in the garage 2.
Further, as shown in FIG. 1, an opening 2b is formed in a wall (first wall 11 described later) located on the left side in the front view of the garage 2.

The garage 2 has an entrance / exit (not shown), from which you can enter the inside of the building 1. Inside the building 1, there is a staircase with stairs leading from the first floor to the third floor. The entrance and the entrance hall 4 are provided between the entrance and the staircase (see FIG. 2). The wall on the garage 2 side of the entrance hall 4 is provided with an entrance / exit (not shown) that allows the entrance hall 4 to be exchanged between the entrance hall 4 and the storage room 5 provided directly above the garage 2.

On the first floor inside the building 1, a washroom and a bathroom 6 are provided in addition to the entrance and the entrance hall 4. The entrance / exit (not shown) to the storage room 5 in the present embodiment is provided on the wall on the entrance hall 4 side (third wall 13 described later) as described above, but on the washroom side. It may be provided on a wall (second wall 12 described later).
Further, on the second floor of the building 1, a living room 7 and a kitchen 8 used as a living / dining room are provided. Access to the balcony 3 can be performed from the living room 7.
Further, on the third floor of the building 1, a room 9 used for a bedroom, a children's room, or the like is provided.

Subsequently, the structure of the storage chamber 5 in the present embodiment will be described in more detail.
As shown in FIGS. 1 and 2, the storage room 5 is a space surrounded by a plurality of walls 11 to 14, a skip floor 15, and a ceiling 16.
The ceiling height of the storage chamber 5 can be appropriately changed in the range of 0.8 to 1.4 meters. The ceiling height of 0.8 m to 1.4 m is a height range for ensuring a minimum height at which a person can enter the storage room 5 and manage to work. Further, by minimizing the ceiling height in this way, the height range is such that the influence of the decrease in sunshine on the adjacent building due to the height of the building 1 can be minimized.
In the present embodiment, the room located directly above the garage 2 is a storage room 5 having a low ceiling height, but the room is not limited to this, and is set to a normal ceiling height like other rooms. It may be a room.

The plurality of walls 11 to 14 are the first wall 11, the second wall 12, the third wall 13 set at the height from the garage 2 located below the storage room 5 to the second floor, and the end portion of the skip floor 15. It is equipped with a fourth wall 14 set at a height from to the second floor. These plurality of walls 11 to 14 are made into bearing walls by incorporating a brace 25 and a structural plywood 26, which will be described later.
The first wall 11 is a wall located on the left side of the garage 2 in the front view, the second wall 12 is a wall located on the back side of the garage 2 in the front view, and the third wall 13 is the wall located on the back side of the garage 2 in the front view. It is a wall located on the right side of the garage 2.
The fourth wall 14 is a wall located in the foreground of the garage 2 in the front view, and is provided integrally with the balcony 3.

The skip floor 15 is a floor provided at a position half a floor higher than the floor 1F of the first floor in the building 1, and is provided between a plurality of walls 11 to 13 surrounding the skip floor 15 and a plurality of walls 11. It is arranged at an intermediate position in the height direction of about 13.
The intermediate position here refers to a position having a certain range excluding the upper end portion and the lower end portion in the vertical direction (height direction), and is the center of the dimensions in the vertical direction (height direction). It does not only refer to the position of. As a result, the ceiling height of the storage chamber 5 can be appropriately changed in the range of 0.8 to 1.4 meters.

The ceiling 16 is provided above the skip floor 15 at intervals. Further, in the present embodiment, the floor beams constituting the floor 2F on the second floor project into the storage chamber 5 as a beam type. The ceiling 16 in the present embodiment is configured by attaching a ceiling plate constituting the ceiling 16 to the lower surface side (including the above beam type) of the floor 2F on the second floor.

As described above, the building 1 is constructed by the wooden frame construction method. Therefore, the plurality of walls 11 to 14 have a plurality of columns 20, 21 (, 22) as a frame member and a plurality of horizontal members 23, 24 as a frame member as a structural frame. The bearing wall is composed of the brace 25 incorporated in the frame and the structural plywood 26 (that is, the face material) attached to at least one side of the frame (see FIGS. 4 to 10).
In this embodiment, the structural plywood 26 is used for constructing the bearing wall, but the present invention is not limited to this, and other face materials such as gypsum board may be used.

The pillars 20 are located at the four corners of the skip floor 15, and the pillars 21 are arranged between the pillars 20 at the four corners at intervals from the pillars 20 at the four corners. The pillars 22 are studs and are arranged at intervals between the pillars 20 and 21 and between the pillars 21 and 21.
The horizontal member 23 is a foundation, which is arranged on the foundation of the building 1, and a plurality of pillars 20, 21, 22 are erected on the upper surface of the horizontal member 23 which is the base. The horizontal member 24 is a beam, and connects the upper ends of the plurality of columns 20, 21, 22 to each other. The horizontal member 24, which is a beam, is bridged and fixed between the side surfaces of the upper end portions of the pillars 20 at the four corners, and is placed on the upper end surfaces of the other pillars 21 and 22.

Further, the plurality of walls 11 to 14 are provided with two layers of reinforced gypsum boards 27 having excellent fire resistance. Further, the heat insulating material 28 is filled between the plurality of pillars 20, 21 and 22. A wall finishing material such as wallpaper is provided on the surface of the reinforced gypsum board 27 on the indoor side, and a furring strip or a moisture-permeable waterproof sheet is provided on the surface of the reinforced gypsum board 27 on the outdoor side (garage 2 side). The outer wall material 29 is provided.

The skip floor 15 is composed of a plurality of floor beams 30 as a framework member, a plurality of floor plywood receiving materials 31, a plurality of first floor receiving portions 32, a plurality of second floor receiving portions 33, and structural plywood. It is configured to include a plurality of floor base plywood 34 (see FIGS. 4 to 10).
The plurality of floor plywood receiving materials 31 are timber that is bridged and fixed between the plurality of floor beams 30 and between the floor beam 30 on the rearmost side and the two central pillars 21 on the second wall 12. be. The floor plywood receiving material 31 is arranged orthogonal to the plurality of floor beams 30, and forms a floor grid frame together with the plurality of floor beams 30.

The first floor receiving portion 32 is a piece of wood that is bridged and fixed between the plurality of pillars 20, 21, 22, and between the plurality of pillars 20, 21, 22, and the brace 25.
Further, the second floor receiving portion 33 is wood set to have the same vertical dimension and the same thickness dimension as the first floor receiving portion 32, and is a floor grid together with a plurality of floor beams 30 and a plurality of floor plywood receiving materials 31. It forms a frame (see FIG. 9). The length dimension of the plurality of second floor receiving portions 33 varies depending on the position where they are provided, but it is assumed that the length dimension is appropriately set so that the outer periphery of the floor grid frame can be formed without a gap.
The upper surfaces of the plurality of floor beams 30 constituting the floor grid frame, the upper surfaces of the plurality of floor plywood receiving materials 31, and the upper surfaces of the plurality of second floor receiving portions 33 are flush with each other.

Further, the skip floor 15 is provided with two layers of reinforced gypsum boards 35 having excellent fire resistance. A plywood 36 is mounted on the reinforced gypsum board 35, and a floor material 37 is provided on the plywood 36 with the plywood 36 as a base. Further, the heat insulating material 38 is filled between the plurality of floor beams 30.

The lower surface side of the skip floor 15 is the ceiling 2c of the garage 2. In the ceiling 2c, a double-layered reinforced gypsum board 41 is attached to the lower surface of a field edge 40 fixed to a floor beam 30, and a furring strip 42 is attached to the lower surface of the reinforced gypsum board 41. On the other hand, the eaves ceiling material 43 is attached.

As shown in FIGS. 2 and 3, the skip floor 15 is provided in a state in which the structural plywood 26 in the plurality of walls 11 to 13 configured as bearing walls is not interrupted.
Since the fourth wall 14 of the plurality of walls 11 to 14 has a height from the end of the skip floor 15 to the second floor as described above, the structural plywood 26 constituting the fourth wall 14 is Uninterrupted by the skip floor 15.

Next, a structure and a construction procedure for attaching the skip floor 15 to the plurality of walls 11 to 13 will be described. In the following, with reference to FIGS. 4 to 10, the entrance / exit to the storage chamber 5, the opening such as the opening 2b, and the fourth wall 14 will be described without illustration. Further, it is assumed that FIGS. 4 to 10 are in chronological order when the skip floor 15 is constructed.

As shown in FIG. 4, the structural frame provided with the skip floor 15 in the building 1 includes a plurality of columns 20, 21, 22, and a plurality of horizontal members 23, 24.
When the skip floor 15 is provided for such a structural frame, as shown in FIG. 5, first, a plurality of floor beams 30 are provided, a plurality of columns 20 and 21 constituting the first wall 11, and a third wall. It is bridged and fixed between a plurality of pillars 20 and 21 constituting the 13. More specifically, one floor beam 30 is laid between the two pillars 20 located on the most outdoor side (front side) of the pillars 20 at the four corners, and the central two constituting the first wall 11 is formed. A floor beam 30 is bridged between the pillar 21 of the book and the two pillars 21 in the center constituting the third wall 13, respectively.

Subsequently, as shown in FIG. 6, between the plurality of floor beams 30 and between the floor beam 30 on the rearmost side and the two central pillars 21 on the second wall 12, together with the plurality of floor beams 30. The floor plywood receiving material 31 for supporting the floor base plywood 34 is laid and fixed.
The floor plywood receiving material 31 is arranged in a direction orthogonal to a plurality of floor beams 30 in a plan view, and is provided so as to be bridged as described above to provide a framework for supporting the floor base plywood 34. It can be formed.

Further, the pillars 22 which are studs are arranged at intervals between the pillars 20 and 21 and between the pillars 21 and 21.
It should be noted that, on the side surfaces of the two pillars 20 located on the back side of the four corner pillars 20 facing the inner side of the plurality of walls 11, 12, 13, a reinforcing material 20a having the same size as the pillar 22 which is a stud is integrated. It is provided for the purpose.

Further, between the two pillars 20 at the four corners constituting the second wall 12 and the pillars 21 adjacent to each other at intervals of the two pillars 20 at the four corners, two pillars intersecting each other in an X shape. Each of the braces 25 is provided.
The two braces 25 that intersect each other in an X-shape are partially notched in the central portion in the length direction and intersect with the pillar 22 that is a stud.

Subsequently, as shown in FIG. 7, a plurality of first floor receiving portions 32 are bridged between the plurality of pillars 20, 21, 22, and between the plurality of pillars 20, 21, 22, and the brace 25. It is fixed.
The end portion of the first floor receiving portion 32 on the length direction side becomes a vertical surface depending on the side surface of the columns 20, 21, 22 in contact with the first floor receiving portion 32, or an inclined surface depending on the side surface of the brace 25 in contact with the first floor receiving portion 32. It is formed like this.
Further, the plurality of first floor receiving portions 32 are arranged so that the height position of the upper surface is the same as the height position of the upper surface of the plurality of second floor receiving portions 33 provided in the subsequent process.
Further, the surface of the plurality of first floor receiving portions 32 on the skip floor 15 side is flush with the surface of the plurality of pillars 20, 21 and 22 on the skip floor 15 side.

Subsequently, as shown in FIG. 8, a plurality of structural plywood 26s are arranged side by side and attached to the surface of the plurality of columns 20, 21, 22 on the skip floor 15 side. The plurality of structural plywoods 26 are attached so as to overlap the upper and lower horizontal members 23 and 24. As a result, the first wall 11, the second wall 12, and the third wall 13 surrounding the skip floor 15 function as bearing walls.
Further, the structural plywood 26 is formed with a notch 26a that fits in contact with the outer peripheral surface of the end portion fixed to the plurality of columns 20, 21, 22 in the plurality of floor beams 30 and the plurality of floor plywood receiving materials 31. Has been done.

Subsequently, as shown in FIG. 9, a plurality of second floor receiving portions 33 are arranged on the surface of the structural plywood 26 on the side of the skip floor 15, and between the plurality of floor beams 30 and a plurality of floor plywood receivers. It is provided between the timbers 31 and.
Further, in the inside corner portion composed of the first wall 11 and the second wall 12, and the inside corner portion composed of the second wall 12 and the third wall 13, the two second floor receiving portions 33 are respectively viewed in plan view L. It is in a state of being assembled in a character shape. That is, it is assumed that the plurality of second floor receiving portions 33 are also provided between the floor beams 30 and the floor plywood receiving material 31 which are adjacent to each other and are arranged in the orthogonal direction via the above-mentioned inside corners. ..
Further, a second floor receiving portion 33 is also provided on the surface of the floor beam 30 located on the frontmost side of the plurality of floor beams 30 on the skip floor 15 side. Also in the corner portion composed of the floor beam 30 and the structural plywood 26 on the most front side, the two second floor receiving portions 33 are provided in a state of being assembled in an L shape in a plan view.

As shown in FIG. 3, the plurality of second floor receiving portions 33 are adhered to the surface of the structural plywood 26 on the skip floor 15 side by the adhesive 33a, and are attached to the structural plywood 26 and the first floor receiving portion 33. On the other hand, it is fixed (fastened with screws) by screws 33b.
Then, the plurality of second floor receiving portions 33 form a floor grid frame together with the plurality of floor beams 30 and the plurality of floor plywood receiving materials 31 as described above.

Subsequently, as shown in FIG. 10, a plurality of floor base plywood 34s are mounted on the upper surface of the floor grid frame.
The floor base plywood 34 is arranged so that the end surface of the floor base plywood 34 on the structural plywood 26 side is in contact with the surface of the structural plywood 26.

After that, as described above, the inside of the skip floor 15 and the inside of the walls 11, 12, and 13 are filled with the heat insulating materials 28 and 38, and the upper surface and the lower surface of the skip floor 15 and the surfaces of the plurality of walls 11 to 13 are covered. Finishing work is performed by attaching reinforced gypsum boards 27, 35, 41, wall finishing material, floor surface material 37, and eaves ceiling material 43.
The skip floor 15 is constructed as described above, and the skip floor 15 is supported at an intermediate position in the vertical direction among the plurality of columns 20, 21 and 22 constituting the structural frame of the building 1.

According to the present embodiment, the floor receiving portions 32 and 33 are arranged on the surface of the structural plywood 26 opposite to the skip floor 15 and are fixed to the structural frame with the first floor receiving portion 32 and the structure. A second floor receiving portion 33 which is arranged on the surface of the plywood 26 on the side of the skip floor 15 and is fixed to the structural plywood 26 and the first floor receiving portion 32 and receives the end portion of the floor base plywood 34. Therefore, the second floor receiving portion 33 is attached to the structural frame via the structural plywood 26 and the first floor receiving portion 32 without cutting the structural plywood 26 at the position where the second floor receiving portion 33 is arranged. It can be in a built-in state.
As a result, the bearing walls 11, 12, and 13 configured by attaching the structural plywood 26 to the structural frame can be fully functioned. Further, the floor base plywood 34 constituting the skip floor 15 can be reliably supported together with the plurality of floor beams 30. Therefore, the skip floor 15 and the bearing walls 11, 12, and 13 can coexist, and the structural calculation of the building 1 can be easily performed. In short, when the skip floor 15 is provided, the structural plywood 26 constituting the bearing walls 11, 12, 13 is not divided at the position of the skip floor 15, so that the skip floor 15 is used as the skip floor 15. It may be provided at an intermediate position in the vertical direction among the plurality of columns 20, 21 and 22, and the structural calculation may be performed as usual as a bearing wall.

Further, since the skip floor 15 is provided between the plurality of bearing walls 11, 12, 13 surrounding the skip floor 15, it is reliably and stably supported by the plurality of bearing walls 11, 12, 13. It will be.

Further, since the brace 25 is provided between the plurality of columns 20, 21 and 22, the bearing walls 11, 12 and 13 to which the structural plywood 26 is attached are further configured to include the brace 25. Therefore, the load-bearing walls 11, 12, and 13 can further improve the function as the load-bearing wall.
Further, since the first floor receiving portion 32 is bridged and fixed between a plurality of columns 20, 21, 22, or between the columns 20, 21, 22, and the brace 25, the bearing capacity provided with the brace 25 is provided. Even if the walls 11, 12, and 13 can coexist with the skip floor 15, the structural calculation of the building 1 can be easily performed.

Further, since the second floor receiving portion 33 is adhered to the surface of the structural plywood 26 on the skip floor 15 side and is screwed to the structural plywood 26 and the first floor receiving portion 32, the second floor receiving portion 33 is fastened to the structural plywood 26 and the first floor receiving portion 32. The portion 33 can improve the integrity with the structural plywood 26 and can reliably transmit the load of the skip floor 15 to the structural skeleton.

Further, since the structural plywood 26 is formed with notches 26a that are in contact with the outer peripheral surface of the end portions fixed to the plurality of columns 20, 21, 22 in the plurality of floor beams 30, a plurality of floors are formed. The structural plywood 26 can be attached to the plurality of columns 20, 21 and 22 in a state where the beam 30 is securely fixed to the plurality of columns 20, 21 and 22. As a result, the skip floor 15 and the bearing walls 11, 12, and 13 can coexist.

Further, in the construction method of the skip floor 15, the first floor receiving portion 32 is fixed to the structural frame, and the structural plywood 26 is provided on the side of the plurality of columns 20, 21, 22 at least on the side where the skip floor 15 is provided. It is attached to a surface to form bearing walls 11, 12, and 13, and the second floor receiving portion 33 is arranged on the surface of the structural plywood 26 on the skip floor 15 side, and is attached to the structural plywood 26 and the first floor receiving portion 32. Since it is fixed to the floor, the structural plywood 26 can be interposed between the first floor receiving portion 32 and the second floor receiving portion 33. That is, the second floor receiving portion 33 is incorporated into the structural frame via the structural plywood 26 and the first floor receiving portion 32 without cutting the structural plywood 26 at the position where the second floor receiving portion 33 is arranged. It can be in a state of being.
As a result, the bearing walls 11, 12, and 13 configured by attaching the structural plywood 26 to the structural frame can be fully functioned. Further, the floor base plywood 34 constituting the skip floor 15 can be reliably supported together with the plurality of floor beams 30. Therefore, the skip floor 15 and the bearing walls 11, 12, and 13 can coexist, and the structural calculation of the building 1 can be easily performed.

1 Building 2 Garage 5 Storage room 11 1st wall 12 2nd wall 13 3rd wall 14 4th wall 15 Skip floor 16 Ceiling 20 Pillar 20a Reinforcing material 21 Pillar 22 Inter-pillar 23 Horizontal material 24 Horizontal material 25 Streaks 26 For structure Plywood 26a Notch 30 Floor beam 31 Floor plywood receiving material 32 First floor receiving part 33 Second floor receiving part 33a Screw 34 Floor base plywood

Claims (6)

It is a support structure of the skip floor provided at the intermediate position in the vertical direction among the multiple columns constituting the structural frame of the building constructed by the wooden frame construction method.
A face material is attached to at least the surface of the plurality of pillars on the side where the skip floor is provided.
The skip floor
Floor base plywood and
A floor receiving portion provided along the face material and supporting the end portion of the floor base plywood, and a floor receiving portion.
A plurality of floor beams, which are fixed to the plurality of columns and support the floor base plywood, are provided.
The floor receiving portion is
The first floor receiving portion arranged on the surface of the face material opposite to the skip floor and fixed to the structural frame, and the first floor receiving portion.
It has a second floor receiving portion that is arranged on the surface of the facing material on the skip floor side and is fixed to the facing material and the first floor receiving portion and receives the end portion of the floor base plywood. ,
The skip is characterized in that the second floor receiving portion and the floor beam are arranged side by side, and the upper surface of the second floor receiving portion and the upper surface of the floor beam are set to the same height. Floor support structure. In the skip floor support structure according to claim 1,
The face material is structural plywood and
The structural plywood is attached to at least the surface of the plurality of columns on the side where the skip floor is provided to form a bearing wall.
The skip floor is a support structure for the skip floor, which is provided between a plurality of bearing walls surrounding the skip floor. In the skip floor support structure according to claim 1 or 2.
Brace is provided between the plurality of pillars,
The first floor receiving portion is a support structure for a skip floor, characterized in that the first floor receiving portion is bridged and fixed between the plurality of pillars or between the pillars and the brace. In the support structure of the skip floor according to any one of claims 1 to 3, in the support structure of the skip floor.
The skip floor support structure is characterized in that the second floor receiving portion is adhered to the surface of the face material on the skip floor side and is screwed to the face material and the first floor receiving portion. .. In the skip floor support structure according to any one of claims 1 to 4.
A support structure for a skip floor, wherein the face material is formed with a notch portion that is fitted in contact with an outer peripheral surface of an end portion of the plurality of floor beams fixed to the plurality of pillars. The skip floor in the support structure of the skip floor according to any one of claims 1 to 5 is placed at an intermediate position in the vertical direction among a plurality of columns constituting the structural frame of the building constructed by the wooden frame construction method. It is a construction method of the skip floor to be formed.
The process of fixing the plurality of floor beams to the plurality of columns, and
The step of fixing the first floor receiving portion to the structural frame and
A step of attaching the face material to at least the surface of the plurality of pillars on the side where the skip floor is provided.
A step of arranging the second floor receiving portion on the surface of the facing material on the skip floor side and fixing the second floor receiving portion to the facing material and the first floor receiving portion.
A method for constructing a skip floor , which comprises a step of placing and attaching the floor base plywood on the floor beam and the second floor receiving portion.

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