JP7044470B2 - building - Google Patents

Description

The present invention relates to a building.

Conventionally, a building having an overhanging portion such as an eave that overhangs toward the outside of the outer peripheral wall of the building has been known. This type of building is described in Patent Document 1. Patent Document 1 discloses a structure in which an eave is attached to an outer wall portion of a building at a portion where a stairwell-like space is provided on the indoor side along the outer periphery of the building. Further, Patent Document 1 discloses a retaining beam erected from a trunk difference toward a stairwell-like space in order to secure the proof stress of the building frame against the torque received from the eaves.

Japanese Unexamined Patent Publication No. 2000-87492

The retaining beam described in Patent Document 1 extends in the horizontal direction from the trunk difference. As described in Patent Document 1, depending on the floor plan of the building, the horizontal beam can be concealed inside a wall or the like, but the beam itself or its beam type is exposed in the indoor space. There is a risk that the indoor space will be narrowed by the girders.

An object of the present invention is to provide a building having a structure in which it is difficult to narrow the indoor space by the retaining beam even if the retaining beam is provided.

The building as the first aspect of the present invention includes a sloped roof, a girder beam that supports the sloped roof at the underwater end of the sloped roof, and the girder that is supported by the girder beam in a plan view. It is provided with a cantilevered overhang from the beam to the outside of the building and a girder erected from the girder to the inside of the building in a plan view. It is characterized by extending along the line.

As one embodiment of the present invention, the overhanging portion includes a carry-out portion fixed to the girder beam, and the retaining beam is located at a position substantially equal to the carry-out portion in the extending direction of the girder beam. Is preferable.

As one embodiment of the present invention, an interior finishing layer along the sloping slope of the sloping roof is provided on the ceiling surface of the indoor space located vertically below the sloping roof on the top floor. Is preferable.

As one embodiment of the present invention, the retaining beam is erected between the girder beam and the purlin beam.

As one embodiment of the present invention, the retaining beam extends at an angle with respect to the extending direction of the girder beam in a plan view.

As one embodiment of the present invention, it is preferable that the retaining beam has an angle of more than 0 degrees and 45 degrees or less with respect to the extending direction of the girder beam in a plan view.

According to the present invention, it is possible to provide a building having a structure in which it is difficult to narrow the indoor space by the retaining beam even if the retaining beam is provided.

It is a top view of the building as one Embodiment in this invention. It is sectional drawing which enlarges and shows the vicinity of a roof among the cross sections along the line I-I of FIG. It is sectional drawing which enlarges and shows the vicinity of a roof among the cross sections along the line II-II of FIG. It is a figure which shows a part of the beams in the vicinity of the overhanging part shown in FIG. 2 in the beam-down view of the hut assembly of the building shown in FIG. It is a figure which shows a part of the beams in the vicinity of the overhanging part shown in FIG. 3 in the beam-down view of the hut assembly of the building shown in FIG.

Hereinafter, embodiments of the building according to the present invention will be described with reference to FIGS. 1 to 5. The same reference numerals are given to common members / parts in each figure.

FIG. 1 is a top view of a building 1 as an embodiment of the building according to the present invention. FIG. 2 is an enlarged cross-sectional view showing the vicinity of the roof among the cross sections along the I-I line of FIG. FIG. 3 is an enlarged cross-sectional view showing the vicinity of the roof in the cross section along the line II-II of FIG.

First, the outline of the building 1 will be described. Building 1 is, for example, a two-story industrialized house having a steel-framed frame, having a reinforced concrete foundation and a frame frame composed of frame members such as columns and beams, and is fixed to the foundation. It is composed of the superstructure 2 and the superstructure 2. The frame members constituting the frame frame are standardized in advance, and are manufactured in advance at the factory and then carried to the construction site for assembly.

The foundation is located below the superstructure 2 and supports the superstructure 2. Specifically, the foundation is a cloth foundation having a T-shaped cross section, and includes a footing portion and a rising portion as a foundation beam. In addition, at the top of the rising part of the foundation, a column base fixing part for fixing the column base of the column of the frame frame is provided by the exposed type fixed column base method, and when fixing the column base, The anchor bolt used protrudes upward from the top of the rising portion in the vertical direction.

In addition to the function of distributing and transmitting the vertical load from the framework frame of the superstructure 2 to the ground, the foundation has various members constituting the outer peripheral wall of the superstructure 2 and the floor of the superstructure 2. It also has a function of directly or indirectly supporting various members constituting the portion, various members constituting the hut assembly 10 of the superstructure 2 and the sloped roof 20.

The frame frame of the superstructure 2 is composed of a plurality of columns, a plurality of beams, and the like. Exterior materials and the like constituting the outer peripheral wall are arranged on the outer peripheral portion of the frame frame. Further, floor plate members and the like constituting the floor portion of each floor are arranged at the interlayer portion of the frame frame. Further, a hut 10 and a sloped roof 20 are arranged on the upper part of the frame frame.

The outer peripheral wall of the building 1 includes at least exterior materials, heat insulating materials, and interior materials. As the exterior material, a panel of lightweight aerated concrete (hereinafter referred to as "ALC"; "ALC" is an abbreviation for "autoclaved light weight concrete") can be used, but as the exterior material, for example, fire resistance. It is also possible to use metal-based or ceramic-based siding, extruded cement boards, wood panel materials, etc. The outer layer of the outer peripheral wall can be formed by connecting a plurality of exterior materials.

Further, the heat insulating material is plate-shaped and can be formed of, for example, a foamed resin-based material such as phenol foam, polystyrene foam, urethane foam, etc., and is connected along the inner surface of the outer layer formed by the above-mentioned exterior material. By doing so, it is possible to form a heat insulating layer on the outer peripheral wall.

Further, as the interior material, for example, gypsum board can be used, and the inner layer of the outer peripheral wall can be formed by connecting to the inside of the heat insulating layer.

The floor of each floor of the building 1 includes a floorboard member. The floor plate member is erected between the beams of the frame frame and is directly or indirectly supported by the beams. The floor board member can be composed of, for example, an ALC panel, but another member such as a folded plate, an extruded cement board, or a wood panel material may be used. Examples of the above-mentioned wood panel material include laminated lumber in which the fiber directions of the laminated boards are parallel, and orthogonal laminated boards (CLT (Cross Laminated Timber)) in which the laminated boards are alternately laminated so that the fiber directions are orthogonal to each other. )) And so on. In addition to the floor plate member, the floor portion is laminated on, for example, a ceiling interior material constituting the ceiling surface of the lower floor indoor space, which is directly or indirectly attached to the floor plate member, or a floor support material. It may include floor interior materials such as flooring that constitutes the floor surface of the indoor space on the upper floor.

Hereinafter, the hut 10 of the building 1 and the sloped roof 20 supported by the hut 10 will be described in detail. As shown in FIGS. 1 to 3, in the sloped roof 20 of the present embodiment, a plurality of (four in the present embodiment) sloped roof surfaces are adjacent to each other via the corner ridge 31 to form a large ridge 32 as a top. It is a hipped roof.

Specifically, the hut assembly 10 of the present embodiment includes a girder beam 11 located on the outer peripheral portion and extending in the horizontal direction, a hut beam 12 extending in the horizontal direction on the indoor side of the girder beam 11, and the hut beam 12. A bundle member 13 erected vertically upward from the hut beam 12, and a main beam 14 supported by the bundle member 13 and extending horizontally in parallel with the girder beam 11 located on the underwater side. , The ridge beam 15 which is supported by the bundle member 13 and is located vertically downward with respect to the large ridge 32, and extends from the water upper side to the water lower side of the sloped roof surface, and the girder beam 11 and the main building beam 14 A hanging beam member 16 supported by the ridge beam 15 and a retaining beam 17 are provided.

The girder beam 11 is supported by the frame frame of the superstructure 2, and supports the sloped roof 20 at the underwater end of the sloped roof 20. Further, the girder beam 11 of the present embodiment is located at a position other than the position of the down-roofed girder beam 11a at the position of the down-roofed portion 40 of the building 1 and the position of the down-roofed portion 40, and the height position of the upper end surface is the same. A plurality of main girder beams 11b arranged in such a manner are provided. That is, the height positions of the down-roofed girder beam 11a and the main girder beam 11b in the vertical direction are different. The hut beam 12 of the present embodiment is axially assembled so that the heights of the main girder beam 11b and the upper end surface are aligned with each other. The main girder beam 11b shown in FIG. 2 does not support the sloped roof 20 at the underwater end of the sloped roof 20 in the cross-sectional view of FIG. However, the main girder beam 11b shown in FIG. 2 supports the sloped roof 20 at the underwater end of the sloped roof 20 in the cross-sectional view of FIG. Therefore, the same reference numerals are used in FIGS. 2 and 3.

The purlin beams 14 are arranged at regular distances from the girder beam 11 toward the ridge beam 15, that is, from the girder beam 11 toward the water side in a plan view. The lower end of the bundle member 13 is supported by the shed beam 12. Each of the bundle members 13 supports the purlin beam 14 or the ridge beam 15 at the upper end thereof.

It is possible to omit some of the components of the hut assembly 10 shown in FIGS. 2 and 3. For example, the ridge 15 shown in FIGS. 2 and 3 and the bundle member 13 supporting the ridge 15 may be omitted. Further, the purlin beam 14 located vertically below the second sloped roof surface 22 shown in FIGS. 2 and 3 and the bundle member 13 supporting the purlin beam 14 can also be omitted.

The sloped roof 20 of the present embodiment has a base member (field plate in the present embodiment) mounted on the hut 10, a waterproof member laid on the base member, and an external space installed on the waterproof member. It is equipped with a roofing material that forms a sloped roof surface that is exposed to the roof. In FIGS. 2 and 3, for convenience of explanation, the base member, the waterproof member, and the roofing material are drawn as one without distinction.

For example, plywood can be used as the base member of the sloped roof 20. The base member is fastened to the rafter member 16 spanning the girder beam 11, purlin beam 14, and ridge beam 15 with a fastening member such as a screw. As the waterproof member of the sloped roof 20, a sheet-shaped member such as a sheet-shaped asphalt roofing can be used. The waterproof member is fastened to the base member by a fastening member such as a screw. Further, as the roofing material of the sloped roof 20, cement-based roofing materials such as clay tiles and artificial slate, natural slate, metal roofing material and the like can be used, and a plurality of roofing materials are laid on the waterproof member. .. The plurality of roofing materials may be configured so that adjacent roofing materials can be engaged with each other to position each other, and the roofing materials are fastened to the base member or the member of the hut 10 by a fastening member such as a screw. May be configured.

As shown in FIGS. 1 to 3, the sloped roof 20 of the present embodiment forms four sloped roof surfaces by the roofing material. These four sloped roof surfaces are adjacent to each other via the corner ridge 31. Specifically, the four sloped roof surfaces are composed of a first sloped roof surface 21, a second sloped roof surface 22, a third sloped roof surface 23, and a fourth sloped roof surface 24. Here, each "sloping roof surface" means a flat roof surface having a substantially uniform inclination angle (angle larger than 0 degrees) with respect to the horizontal direction.

As shown in FIGS. 1 to 3, the first sloped roof surface 21 has the gentlest slope and the smallest slope angle among the four sloped roof surfaces.

The second sloped roof surface 22 is adjacent to the first sloped roof surface 21 via the large ridge 32 without being adjacent to each other via the corner ridge 31. In other words, in the sloped roof 20 of the present embodiment, the main building 32 is formed by the ridge lines where the first sloped roof surface 21 and the second sloped roof surface 22 intersect each other in the vertical direction. The slope of the second sloped roof surface 22 is steeper than the slope of the first sloped roof surface 21.

The third sloped roof surface 23 is adjacent to the first sloped roof surface 21 and the second sloped roof surface 22 via the corner ridge 31. Further, the end of the third sloped roof surface 23 on the water side is continuous with one end of the main building 32 in the extending direction.

Like the third sloped roof surface 23, the fourth sloped roof surface 24 is adjacent to the first sloped roof surface 21 and the second sloped roof surface 22 via the corner ridge 31. Further, the fourth sloped roof surface 24 is not adjacent to the third sloped roof surface 23 via the corner ridge 31. Further, the upper end portion of the fourth sloped roof surface 24 is continuous with the other end portion of the main building 32 in the extending direction.

The slope of the third slope roof surface 23 and the slope of the fourth slope roof surface 24 of the present embodiment are equal to the slope of the second slope roof surface 22.

As described above, the sloped roof 20 of the present embodiment has an eccentric hip roof structure in which the position of the large ridge 32 is eccentric.

Hereinafter, further details of the building 1 will be described. FIG. 4 is a diagram showing a part of the beams in the vicinity of the overhanging portion 60 shown in FIG. 2 in the beam plan of the hut assembly 10. Further, FIG. 5 is a diagram showing a part of the beams in the vicinity of the overhanging portion 60 shown in FIG. 3 in the beam plan of the hut assembly 10.

As shown in FIGS. 1 to 5, the building 1 is supported by the girder beam 11 of the hut assembly 10, and includes a cantilevered overhanging portion 60 from the girder beam 11 to the outside of the building in a plan view. .. The overhanging portion 60 of the present embodiment is fixed to the girder beam 11 with a fastening member such as a bolt, and has a carry-out portion 61 protruding from the girder beam 11 to the outside of the building and a supported portion 62 supported by the carry-out portion 61. And have. More specifically, the overhanging portion 60 of the present embodiment includes a plurality of arm members as a carry-out portion 61 and a planar member as a supported portion 62 supported by the arm members so as to cover the plurality of arm members. It is an eaves equipped with. In addition, in FIGS. 4 and 5, for convenience of explanation, the take-out portion 61 and the supported portion 62 of the overhanging portion 60 are shown.

Here, the hut assembly 10 of the building 1 is provided with a retaining beam 17 erected from the girder beam 11 supporting the overhanging portion 60 to the inside of the building in a plan view. By providing such a retaining beam 17, the strength of the girder beam 11 that supports the overhanging portion 60 is reinforced, and the torsional deformation of the girder beam 11 due to the weight of the overhanging portion 60 and the hanging deformation of the overhanging portion 60 are suppressed. be able to.

Further, as shown in FIGS. 2 and 3, the retaining beam 17 extends along the inclined slope of the first sloped roof surface 21 of the sloped roof 20. Therefore, the retaining beam 17 is less likely to be exposed to the indoor space 50 on the uppermost floor (second floor in the present embodiment) located vertically below the first sloped roof surface 21. It is preferable that the slope of the sloped roof 20 and the slope of the retaining beam 17 are at substantially the same angle. The inclination angle (elevation angle) is preferably set in the range of 5 degrees to 85 degrees, and particularly preferably set in the range of 15 degrees to 25 degrees.

Here, the underwater end of the retaining beam 17 shown in FIGS. 4 and 5 is fixed to the girder beam 11 by a fastening member such as a bolt. More specifically, the underwater end of the retaining beam 17 shown in FIG. 4 is fixed to the down-roofed girder beam 11a by a fastening member such as a bolt. Further, the lower end of the retaining beam 17 shown in FIG. 5 is fixed to the main girder beam 11b by a fastening member such as a bolt.

Further, the water upper end portion of the retaining beam 17 shown in FIG. 4 is fixed to the main girder beam 11b by a fastening member such as a bolt. On the other hand, the water upper end of the retaining beam 17 shown in FIG. 5 is fixed to the purlin beam 14 by a fastening member such as a bolt.

That is, the retaining beam 17 shown in FIG. 4 is erected between the girders 11, and more specifically, between the girders 11a and the main girders 11b. On the other hand, the retaining beam 17 shown in FIG. 5 is erected between the girder beam 11 and the purlin beam 14.

Furthermore, the retaining beam 17 of the present embodiment is at a position substantially equal to the carry-out portion 61 of the overhanging portion 60 in the extending direction of the girder beam 11 to which the retaining beam 17 is attached. That is, the joint position between the retaining beam 17 and the girder beam 11 and the joint position between the carry-out portion 61 and the girder beam 11 are substantially equal in the extending direction of the girder beam 11. With such a configuration, the strength of the girder beam 11 that supports the overhanging portion 60 is further reinforced, and the torsional deformation of the girder beam 11 due to the weight of the overhanging portion 60 and the hanging deformation of the overhanging portion 60 are further suppressed. can do.

The overhanging portion 60 of the present embodiment is an eave having an arm member as a carry-out portion 61 and a planar member as a supported portion 62, but is supported by a girder beam 11 in a cantilever shape. However, it is not limited to this configuration. Therefore, for example, the overhanging portion 60 having another configuration such as an awning provided with a film member as a planar member may be used.

Further, as shown in FIGS. 2 and 3, the ceiling surface 50a of the indoor space 50 on the top floor (second floor in this embodiment) located vertically below the first slope roof surface 21 has a first slope. It extends along the slope of the roof surface 21. In other words, the ceiling surface 50a of the indoor space 50 located vertically below the sloped roof 20 on the top floor is provided with an interior finishing layer along the sloped slope of the sloped roof 20. As described above, if the stanchion beam 17 extends along the sloping slope of the sloping roof 20, it is easy to adopt a configuration in which the stanchion beam 17 itself or its beam shape is not exposed to the indoor space 50. Therefore, it becomes easy to realize the ceiling surface 50a having the interior finishing layer along the inclined slope of the inclined roof 20. Then, by setting the ceiling surface 50a having an interior finishing layer along the slope of the slope roof 20, it is possible to realize an indoor space 50 with a feeling of openness.

As shown in FIG. 4, the retaining beam 17 provided in the vicinity of the overhanging portion 60 shown in FIG. 2 extends in a direction substantially orthogonal to the extending direction of the girder beam 11 in a plan view. However, the extending direction of the retaining beam 17 in a plan view is not limited to the direction orthogonal to the extending direction of the girder beam 11 shown in FIG. The retaining beam 17 shown in FIG. 5 is inclined and extends with respect to the extending direction of the girder beam 11 in a plan view. Specifically, it is preferable that the retaining beam 17 shown in FIG. 5 has an angle of more than 0 degrees and 45 degrees or less with respect to the extending direction of the girder beam 11 in a plan view.

The sloped roof 20 of the present embodiment has an eccentric hipped roof structure as described above (see FIG. 1). Therefore, at the positions of the large building 32 and the corner building 31, it is difficult for the horizontal positional relationship between the outdoor side building position (exterior line) and the indoor side building position (interior line) to match. As a result, when trying to extend the stanchion beam 17 in a direction substantially orthogonal to the extending direction of the girder beam 11 in a plan view, the stanchion beam 17 and the interior are compared with the sloped roof of a normal ridge structure. There is a problem that it easily interferes with the line. Therefore, in the case of a sloped roof 20 having an eccentric hipped roof structure, it is easy to use a configuration in which the girder beam 11 is inclined with respect to the extending direction in a plan view, as in the retaining beam 17 shown in FIG. By using such a hipped beam 17, the degree of freedom in installing the hipped beam 17 can be increased.

As shown in FIGS. 2 and 3, the indoor space 50 located vertically below the first sloped roof surface 21 is a stairwell space, and the hut beams 12 and bundles exposed in this stairwell space. The member 13 is not provided. Therefore, a wide atrium space can be secured. On the other hand, the purlin beam 14 located at the upper part of the atrium space extends horizontally at a position below the first sloped roof surface 21 and both ends thereof (the purlin beam indicated by the reference numeral "X" in FIG. 5). (See the end of 14) extends along the slopes of the third sloped roof surface 23 and the fourth sloped roof surface 24. Both ends of the main building beam 14 extending at an inclination are fixed to the girder beam 11 on the underwater side of the third sloped roof surface 23 and the girder beam 11 on the underwater side of the fourth sloped roof surface 24. In this way, by using the purlin beam 14 whose both ends are bent according to the inclination of the adjacent sloped roof surface, a wide atrium space can be created without providing the purlin beam 12 and the bundle member 13 that support the purlin beam 14. At the same time, the weight of the sloped roof 20 added to the purlin beam 14 can be transmitted to the frame structure of the superstructure 2 without going through the hut beam 12 and the bundle member 13.

Further, the overhanging portion 60 shown in FIG. 4 is supported in a cantilevered manner by the down-roofed girder beam 11a among the girder beams 11, but as in the overhanging portion 60 shown in FIG. 5, the girder beam 11 Of these, the configuration may be such that it is cantileveredly supported by the main girder beam 11b. Further, the width and position of the overhanging portion 60 can be appropriately designed, and are not limited to the width and position shown in FIGS. 4 and 5. Furthermore, the number of retaining beams 17 and their relative installation positions can be appropriately designed according to the width and position of the overhanging portion 60, and are limited to the numbers and relative installation positions shown in FIGS. 4 and 5. It is not something that can be done.

The building according to the present invention is not limited to the specific configuration described in the above-described embodiment, and various modifications can be made as long as it does not deviate from the description of the scope of claims. For example, in the above-described embodiment, an example in which the overhanging portion 60 is attached to the underlayed girder beam 11a and the main girder beam 11b located on the underwater side of the first sloped roof surface 21 is shown, but the overhanging portion is shown. The position where the 60 is attached is not limited to the underwater side of the first sloped roof surface 21, and may be a girder beam 11 located on the underwater side of another sloped roof surface. Further, different overhanging portions 60 may be attached to different girders 11 located on the underwater side of different sloped roof surfaces.

The present invention relates to a building.

1: Building 2: Superstructure 10: Hut assembly 11: Girder beam 11a: Roofed girder beam 11b: Main girder beam 12: Hut beam 13: Bundle member 14: Main building beam 15: Building beam 16: Tarp tree member 17: Reserve beam 20: Slope roof 21: 1st slope roof surface 22: 2nd slope roof surface 23: 3rd slope roof surface 24: 4th slope roof surface 31: Corner building 32: Large building 40: Roofing part 50: Indoor space 50a : Ceiling surface 60: Overhanging part 61: Bringing out part 62: Supported part X: End of main building beam

Claims (6)

The sloped roof of the eccentric hipped roof where the position of the main building is eccentric ,
A girder beam that is supported by the frame frame of the superstructure at the underwater end of the sloped roof and supports the sloped roof,
A cantilevered overhang from the girder to the outside of the building in plan view, supported by the girder.
It is provided with a retaining beam that is erected from the girder beam to the inside of the building in a plan view and is located vertically above the indoor space of the superstructure.
The retaining beam extends along the slope of the sloped roof.
The overhanging portion includes an arm member fixed to the girder beam.
In a cross-sectional view orthogonal to the extending direction of the girder beam, the retaining beam and the arm member extend in different directions .
The sloped roof has a plurality of sloped roof surfaces having different slope angles, and the sloped roof has a plurality of sloped roof surfaces.
The overhanging portion is located on the underwater side of the sloped roof surface having the gentlest slope among the plurality of sloped roof surfaces among the girder beams in a plan view, and is located at a position lower than the other parts of the girder beam. It overhangs from the roofed girder beam to the outside of the building in a cantilever shape.
The retaining beam is a building characterized in that it is erected on the inner side of the building from the down-roofed girder beam in a plan view . The claim is characterized in that the retaining beam is erected on the inner side of the building from a position substantially equal to the position of the girder to which the arm member is fixed in the extending direction of the girder. The building described in 1. 1. The building described in 2. The building according to any one of claims 1 to 3, wherein the girder beam is erected between the girder beam and the purlin beam. The building according to any one of claims 1 to 4, wherein the retaining beam extends at an angle with respect to the extending direction of the girder beam in a plan view. The building according to claim 5, wherein the retaining beam has an angle of more than 0 degrees and 45 degrees or less with respect to the extending direction of the girder beam in a plan view.

Images