JP7299797B2 - modular building - Google Patents

Description

The present invention relates to unit-type buildings.

Conventionally, a unit building is known as one type of building. A unit-type building is constructed by combining a plurality of building units each having a rectangular parallelepiped shape. A building unit has a frame formed by columns, ceiling girders, and floor girders, and is formed by attaching wall panels, ceiling panels, and the like to the frame.

In a unit-type building, a roof is provided above a building body, and the roof is constructed by arranging a plurality of roof panels side by side. Such a roof may employ a support structure in which each roof panel is supported by a plurality of bundles erected on the building body (see Patent Document 1, for example). In such a support structure, the bundles are erected on the frame of the building unit, for example on the ceiling girders, and the bundles are placed below (beneath) the boundaries of adjacent roof panels. Adjacent roof panels are commonly supported by the bundle. In this case, each roof panel can be supported while suppressing an increase in the number of bundles.

JP 2011-080329 A

By the way, in the above-described support structure for roof panels using bundles, if there is no building unit frame (for example, a ceiling girder) below the boundary between adjacent roof panels, a bundle below the boundary between adjacent roof panels is used. cannot be installed. Therefore, in this case, the adjacent roof panels cannot be commonly supported by the bundle. In other words, in the roof panel support structure described above, there may be a case where adjacent roof panels cannot be commonly supported by a bundle due to restrictions imposed by the arrangement of building units.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and its main object is to provide a unit-type building capable of supporting each roof panel without being restricted by the arrangement of building units. .

In order to solve the above-mentioned problems, a unit-type building of the first invention includes a building body constructed by combining a plurality of building units each including a frame body formed by columns and beams in a frame shape; A unit-type building comprising a roof portion provided above a main body, wherein the roof portion is configured by a plurality of roof panels arranged side by side, and is erected on the frame, A plurality of bundles arranged below the boundaries of the adjacent roof panels and commonly supporting the adjacent roof panels; support beams extending across the boundary to provide common support for the adjacent roof panels.

According to the invention, a support beam is provided spanning between adjacent bundles, the support beam extending across the boundaries of adjacent roof panels. Adjacent roof panels are commonly supported by the supporting beams. In this case, even if there is no building unit frame (for example, ceiling girders or columns) below the boundary between adjacent roof panels, the adjacent roof panels can be supported by the support beams. Therefore, each roof panel can be supported without being restricted by the layout of the building units.

Here, for example, when the frame of the building unit does not exist below the boundary between the adjacent roof panels, a small beam is bridged between the ceiling girders of the frame, so that the small beam is placed between the adjacent roof panels. It is conceivable to place it under the boundary. Then, it is conceivable to install a bundle at a position below the border of the adjacent roof panels on the small beam, and to commonly support the adjacent roof panels with the bundle. With such a support arrangement it is also possible to support the roof panel without being constrained by the layout of the building units.

However, since such a structure is a structure in which the roof panel is supported by the bundles, it is likely to be restricted by the bundles when using the attic space. On the other hand, in the configuration of the present invention described above, since the support beams support the adjacent roof panels, the number of bundles can be reduced accordingly, and the constraints of the bundles in the attic space can be reduced. can be done. Therefore, it is possible to obtain the above-described effect that each roof panel can be supported regardless of the arrangement of the building units while ensuring a wide attic space.

In addition, by connecting adjacent bundles with support beams, it is possible to impart resistance to horizontal force (sideways force) generated on the roof during earthquakes, strong winds, and the like. For this reason, the strength of the roof can be preferably ensured compared to a structure in which each roof panel is supported only by a bundle.

A unit-type building according to a second invention is characterized in that, in the first invention, the support beams are bridged between the upper ends of the adjacent bundles and extend along the roof panels as a whole. characterized by being formed

According to the present invention, since the entire support beam is arranged along the roof panel, it is possible to prevent the support beam from becoming an obstacle in the attic space. As a result, when using the space in the attic, it is possible to secure a larger space.

A unit-type building according to a third invention is characterized in that, in the first or second invention, a first support beam and a second support beam extending in directions different from each other in plan view are provided as the support beams. do.

According to the present invention, since the first support beam and the second support beam are provided to extend in mutually different directions in a plan view, even if a horizontal force in any direction is applied to the roof during an earthquake or the like, A resistance force can be applied to the horizontal force. Therefore, the strength of the roof can be secured more favorably.

A unit-type building according to a fourth invention is characterized in that, in the third invention, the first support beam and the second support beam are connected to the same bundle.

According to the present invention, since the first support beams and the second support beams extending in mutually different directions in plan view are connected to the same bundle, each of the support beams and the plurality of bundles are integrated with each other. A three-dimensional structure can be obtained. Therefore, it becomes possible to suitably increase the strength of the roof.

A unit-type building according to a fifth invention is characterized in that, in any one of the first to fourth inventions, the support beams are connected to the plurality of bundles.

According to the present invention, since the support beams are connected to the plurality (all) of the bundles erected on the building body, the number of bundles can be greatly reduced. Therefore, it is possible to greatly reduce the restrictions imposed by the bundles in the attic space, and as a result, it is possible to secure a wider attic space.

The perspective view which shows the outline of a unit-type building. The perspective view which shows a building unit. The top view which shows the whole roof part. The top view which shows a roof panel. FIG. 4 is a cross-sectional view along the line AA of FIG. 3; The perspective view which shows typically the arrangement configuration of a bundle|flux and a support beam. The top view which shows the whole roof part in other embodiment. The perspective view which shows typically the arrangement|positioning structure of the bundle|flux and the support beam in other embodiment.

An embodiment embodying the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an outline of a unit-type building, and FIG. 2 is a perspective view showing a building unit that constitutes the unit-type building.

As shown in FIG. 1, a building 10 (unit building) such as a house includes a building body 12 provided on a foundation 11 and a roof portion 13 provided above the building body 12 . The building body 12 is a two-storied building and is constructed by combining a plurality of rectangular parallelepiped building units 20 . These building units 20 are manufactured in advance at a manufacturing factory and then transported to the construction site by truck or the like.

As shown in FIG. 2, the building unit 20 includes four pillars 21 arranged at its four corners, and four ceiling girders 22 and four floor girders 23 connecting the upper end and lower end of each pillar 21, respectively. and In the building unit 20 , the pillars 21 , the ceiling girders 22 and the floor girders 23 form a rectangular parallelepiped frame 24 . The pillar 21 is made of rectangular steel in the shape of a square cylinder. The ceiling girders 22 and the floor girders 23 are made of channel steel with a U-shaped cross section, and are arranged so that the grooves are directed inward in the horizontal direction. The ceiling girders 22 and the floor girders 23 each correspond to "beams".

A plurality of ceiling girders 25 are bridged between the opposing ceiling girders 22 . A ceiling surface material (not shown) is supported by these ceiling beams 25 . A plurality of small floor beams 26 are bridged between the facing floor girders 23 . A floor material (not shown) is supported by these floor beams 26 .

Next, the configuration of the roof portion 13 will be described with reference to FIG. 3 . FIG. 3 is a plan view showing the entire roof portion 13. As shown in FIG. In FIG. 3, for convenience, each building unit 20 constituting the building body 12 is indicated by a chain double-dashed line.

As shown in FIG. 3, the roof portion 13 is a hipped roof and has a rectangular shape in plan view. The roof portion 13 has a ridge 31 extending horizontally at its top and corner ridges 32 extending from both ends of the ridge 31 toward corners 33 of the roof portion 13 . The roof portion 13 has four (four sides) inclined roof portions 35 partitioned by the main ridge 31 and the corner ridge 32 . These inclined roof portions 35 include a pair of inclined roof portions 35A having a trapezoidal shape on the flat side (long side) of the roof portion 13 and a triangular shape on the gable side (short side) of the roof portion 13. A pair of sloped roof sections 35B are also included. Each of these inclined roof portions 35 (35A, 35B) is formed so as to incline downward toward the edge of the eaves 37. As shown in FIG.

Each sloped roof section 35 is composed of a plurality of roof panels 40 arranged side by side. In each inclined roof portion 35, a plurality of roof panels 40 are arranged in the direction in which the eaves 37 extend. The plurality of roof panels 40 includes a plurality of types of roof panels 40 having different shapes. For example, it includes a triangular (specifically right triangle) roof panel 40, a square (rectangular) roof panel 40, a trapezoidal roof panel 40, and the like.

FIG. 4 is a plan view showing the configuration of the roof panel 40. As shown in FIG. The configuration of the roof panel 40 will be described below with reference to FIG. Although FIG. 4 shows the roof panel 40 having a rectangular shape, the basic configuration of the roof panel 40 is the same regardless of the shape of the roof panel 40. ), the structure of the roof panel 40 will be described.

As shown in FIG. 4 , the roof panel 40 has a sheathing board 41 and a foundation frame 42 provided on the underside of the sheathing board 41 . The sheathing board 41 is made of particle board, and its shape is determined according to the shape of the roof panel 40 . The sheathing board 41 is fixed to the base frame 42 with screws or the like.

The base frame 42 is formed by assembling metal or wooden frame materials into a frame shape. The base frame 42 has a plurality of peripheral edge frame members 43 extending along the peripheral edge of the sheathing board 41 as frame members. The outer frame of the base frame 42 is formed by these peripheral frame members 43 . In addition, the base frame 42 further has a connecting frame member 44 that connects the peripheral edge frame members 43 together as a frame member. However, the connecting frame member 44 may be defective.

Roof panels 40 are supported by bundles 45 provided on building body 12 . The structure for supporting the roof panel 40 by the bundle 45 will be described below with reference to FIG. 5 in addition to FIG. FIG. 5 is a cross-sectional view taken along line AA of FIG. In addition, in FIG. 5, illustration of the inclined roof part 35B is abbreviate|omitted for convenience.

As shown in FIGS. 3 and 5, bundles 45 are provided at a plurality of locations on the building body 12 . Each bundle 45 is arranged on the central side of the building body 12 in plan view. Each bundle 45 supports the roof panel 40 from below, and in the supported state, the roof panel 40 is inclined downward toward the outer peripheral side of the building body 12 . A short bracket 48 is provided on the outer peripheral portion of the building body 12 . The roof panel 40 is supported by brackets 48 on the outer peripheral side of the building body 12 .

Each bundle 45 is arranged on the building body 12 in a unit adjacent portion where adjacent building units 20 (specifically, building units 20 on the second floor) are adjacent. The bundle 45 is made of square steel pipes extending in the vertical direction, and bundle legs 46 are fixed to the lower ends thereof. The bundle leg portion 46 is made of a flat metal plate and fixed to the lower end portion of the bundle 45 by welding. The bundle legs 46 are arranged to straddle the frames 24 of the adjacent building units 20, more specifically, the ceiling girders 22, and are fixed to the ceiling girders 22 by bolts or the like in the arranged state. As a result, the bundle 45 is erected on each ceiling girder 22 via the bundle leg portion 46 .

A plurality of bundles 45 (specifically, three bundles) are arranged on both sides of the main ridge 31 in plan view. On both sides of the main ridge 31, a plurality of bundles 45 are arranged side by side at predetermined intervals in the direction in which the main ridge 31 extends (in other words, the long side direction of the roof portion 13 in plan view). In the following description, the bundles 45 arranged on one side of the main ridge 31 are called bundles 45A, and the bundles 45 arranged on the other side are called bundles 45B.

The arrangement intervals of the bundles 45A and the arrangement intervals of the bundles 45B are both the same. Therefore, each bundle 45A and each bundle 45B have the same positional relationship in the long side direction of the roof portion 13 . In addition, each bundle 45A is set at a position closer to the main ridge 31 than each bundle 45B in the short side direction of the roof portion 13 . Therefore, each bundle 45A is larger in height (vertical length) than each bundle 45B. The long-side direction of the roof portion 13 is the long-side direction of the roof portion 13 in plan view, and the short-side direction of the roof portion 13 is the short-side direction of the roof portion 13 in plan view. This also applies to the following description.

Each bundle 45 (45A, 45B) is arranged below (directly below) the boundary between the adjacent roof panels 40. As shown in FIG. Each bundle 45 commonly supports its adjacent roof panels 40 at its upper end. Specifically, at the boundary between adjacent roof panels 40, the peripheral frame members 43 of the base frames 42 of the respective roof panels 40 are arranged adjacent to each other. A peripheral edge frame member 43 of each roof panel 40 is placed on the upper end surface of the bundle 45 and fixed to the bundle 45 with screws or the like in the mounted state.

Here, in the building 10 described above, there is a portion below the boundary between the adjacent roof panels 40 where the ceiling girders 22 (and thus the frame 24) do not exist. In this case, since the bundle 45 cannot be installed under the boundary portion of the adjacent roof panels 40, the adjacent roof panels 40 cannot be commonly supported by the bundle 45.例文帳に追加Therefore, in this embodiment, a characteristic support structure is adopted so that the adjacent roof panels 40 can be commonly supported even in such a case. The support configuration will be described below. 6 is a perspective view schematically showing the arrangement configuration of the bundle 45 and the support beams 51 and 52. As shown in FIG.

As shown in FIGS. 3, 5 and 6, support beams 51 and 52 are provided across adjacent bundles 45 . The support beams 51 and 52 are made of a long steel material, for example, channel steel having a U-shaped cross section. The support beams 51 and 52 are arranged with their grooves directed downward, and both ends thereof are fixed to the respective bundles 45 by bolts or the like. In this case, the support beams 51 and 52 are provided in a state in which the adjacent bundles 45 are connected.

A plurality of support beams 51 and 52 are arranged, and four support beams 51 and 52 are arranged in this embodiment. In this case, each bundle 45 is connected to at least one of the plurality of support beams 51 and 52 . In addition, in FIG. 3, the support beams 51 and 52 are indicated by dot hatching for the sake of convenience.

Each support beam 51 , 52 extends across adjacent roof panels 40 . In other words, each of the support beams 51 and 52 extends across the boundaries of the adjacent roof panels 40 . The support beams 51 and 52 commonly support the adjacent roof panels 40 at the boundary between the adjacent roof panels 40 . In FIG. 3, the support points where the roof panels 40 are supported by the support beams 51 and 52 are indicated by black circles (this point also applies to FIG. 7, which will be described later). In addition, in the present embodiment, the support points of the support beams 51 and 52 are set substantially at the center of the support beams 51 and 52 in the longitudinal direction.

Specifically, at the boundary between adjacent roof panels 40, the peripheral frame members 43 of the base frames 42 of the respective roof panels 40 are arranged adjacent to each other. The peripheral frame members 43 of the roof panels 40 are placed on the upper surfaces of the support beams 51 and 52, and fixed to the support beams 51 and 52 with screws or the like. In this manner, the adjacent roof panels 40 are supported and fixed by the support beams 51 and 52 at the boundaries between the adjacent roof panels 40 .

The support beams 51 and 52 include a support beam 51 extending in the short side direction of the roof portion 13 and a support beam 52 extending in the long side direction of the roof portion 13 . The support beams 51 and the support beams 52 extend in directions orthogonal to each other in plan view. The support beam 51 corresponds to the first support beam, and the support beam 52 corresponds to the second support beam.

The support beams 51 are arranged on both sides of the main ridge 31 in plan view. Each of these support beams 51 (hereinafter referred to as 51A and 51B) is bridged between the adjacent bundles 45A and 45B. In this case, the support beams 51A, 51B span between the upper ends of the respective bundles 45A, 45B. Each of the support beams 51A and 51B extends across the boundary between the adjacent sloped roof portions 35A and 35B, that is, across the corner ridge 32. As shown in FIG. In this case, the support beams 51A, 51B extend across the roof panels 40 of the adjacent sloped roof portions 35A, 35B across the corner ridge 32, in other words, the boundary portions of the adjacent roof panels 40. extends across the

The support beams 51A and 51B have a horizontal portion 51a extending horizontally along the lower surface of the roof panel 40 of the inclined roof portion 35B and inclined from the horizontal portion 51a along the lower surface of the roof panel 40 of the inclined roof portion 35A. and an extending inclined portion 51b. The horizontal portion 51a extends entirely along the lower surface of the roof panel 40 of the sloped roof portion 35B. The inclined portion 51b extends along the lower surface of the roof panel 40 of the inclined roof portion 35A. As a result, the support beams 51A and 51B are arranged along the lower surface of the roof panel 40 as a whole.

The horizontal portion 51a and the inclined portion 51b are each made of a long material (steel material). Support beams 51A and 51B are formed by joining the horizontal portion 51a and the inclined portion 51b to each other by welding. In this case, the support beams 51A and 51B have a bent shape between the horizontal portion 51a and the inclined portion 51b, and the bent portion is the bent portion 51c. Note that the support beams 51A and 51B are not necessarily formed as described above, and may be formed by, for example, bending one elongated material (steel material).

The bent portions 51c of the support beams 51A and 51B are located below (directly below) the corner ridge 32. As shown in FIG. In other words, the bent portions 51c of the support beams 51A and 51B are located below the boundaries of the roof panels 40 adjacent to each other with the corner ridge 32 interposed therebetween. The support beams 51A and 51B commonly support the roof panels 40 at their bent portions 51c.

The support beams 52 are arranged on both sides of the main ridge 31 in plan view. One support beam 52A of these support beams 52 is bridged between adjacent bundles 45A, and the other support beam 52B is bridged between adjacent bundles 45B. The support beam 52A spans between the upper ends of the bundles 45A, and the support beam 52B spans between the upper ends of the bundles 45B.

Each support beam 52A, 52B extends across adjacent roof panels 40 of the sloped roof section 35A. In other words, each support beam 52A, 52B extends across the boundary of each adjacent roof panel 40. As shown in FIG. Each support beam 52A, 52B extends horizontally along the lower surface of the roof panel 40 and has a straight shape. Specifically, each support beam 52A, 52B extends along the bottom surface of the roof panel 40 in its entirety. In this case, each of the support beams 52A, 52B extends in a direction perpendicular to the inclination direction of the inclined roof portion 35A. The support beams 52A and 52B commonly support the adjacent roof panels 40 at their boundaries.

The support beams 52A and 52B are opposed to each other and are arranged to form a U-shape in plan view together with the support beam 51A. Each support beam 52A, 51A is connected together to the bundle 45A located at the boundary of each support beam 52A, 51A. Further, the support beams 52B and 51A are connected together to the bundle 45B positioned at the boundary between the support beams 52B and 51A. In this case, the three support beams 51A, 52A, 52B and the four bundles 45A, 45B are integrated with each other to construct a three-dimensional structure (framework) that is U-shaped in plan view.

According to the configuration of the present embodiment described in detail above, the following excellent effects are obtained.

Support beams 51 and 52 are provided across adjacent bundles 45 , and the support beams 51 and 52 extend across the boundary between adjacent roof panels 40 . Adjacent roof panels 40 are commonly supported by the support beams 51 and 52 . In this case, even if the frame 24 (specifically, the ceiling girders 22 and the columns 21) of the building unit 20 does not exist below the boundary between the adjacent roof panels 40, the adjacent roof panels 40 are supported by the support beams 51. , 52. Therefore, each roof panel 40 can be supported without being restricted by the arrangement of the building units 20 .

Also, by supporting the adjacent roof panels 40 with the support beams 51 and 52, the number of bundles 45 can be reduced accordingly. In this case, when using the attic space between the roof portion 13 and the building body 12 as a storage space or the like, the restrictions due to the bundles 45 can be reduced. Therefore, the above effects can be obtained while securing a large attic space.

In addition, since the adjacent bundles 45 are connected by the support beams 51 and 52, resistance can be imparted to the horizontal force (sideways force) generated in the roof portion 13 during an earthquake or strong wind. As a result, the strength of the roof can be preferably ensured compared to a structure in which each roof panel 40 is supported only by the bundles 45 .

Since the entire support beams 51 and 52 are arranged along the roof panel 40, it is possible to prevent the support beams 51 and 52 from becoming an obstacle in the attic space. As a result, when using the space in the attic, it is possible to secure a larger space.

Since a plurality of support beams 51 and 52 are provided that extend in directions different from each other in a plan view, even if a horizontal force is applied to the roof portion 13 in any direction during an earthquake or the like, the horizontal force can be resisted. power can be given. Therefore, the strength of the roof can be secured more favorably.

Since the support beams 51 and 52 extending in different directions in plan view are connected to the same bundle 45, a three-dimensional structure is obtained in which the support beams 51 and 52 and the plurality of bundles 45 are integrated with each other. be able to. Therefore, it becomes possible to suitably increase the strength of the roof.

Since the support beams 51 and 52 are connected to the plurality (all) of the bundles 45 erected on the building body 12, the number of the bundles 45 can be greatly reduced. Therefore, the restrictions imposed by the bundle 45 in the attic space can be greatly reduced, and as a result, a wider attic space can be secured.

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

(1) In the above embodiment, the roof structure of the present invention is applied to the hipped roof portion 13, but the roof structure of the present invention may be applied to other roofs such as gable roofs and flat roofs. . Also, the roof structure of the present invention may be applied to a composite roof formed by combining a plurality of roof shapes. A specific example in that case is shown in FIGS. 7 and 8. FIG. 7 is a plan view showing the entire roof portion, and FIG. 8 is a schematic diagram showing the bundle and the support beams.

In a building 60 shown in FIGS. 7 and 8, a roof portion 62 has a plurality of hipped roof portions 63a and 63b having a hipped roof shape, and each hipped portion 63a and 63b is It is formed by being combined so as to form an L shape. In the hipped portions 63a, 63b, the large ridges 64a, 64b extend in directions orthogonal to each other in plan view. Each hipped portion 63a, 63b is configured by a plurality of roof panels 65 arranged side by side. A bundle 67 is arranged below the boundary between the adjacent roof panels 65, and the adjacent roof panels 65 are commonly supported by the bundle 67. As shown in FIG.

Support beams 68 and 69 span between adjacent bundles 67 . Support beams 68 and 69 are provided to connect the upper ends of adjacent bundles 67 . The support beams 68, 69 extend across the boundary between adjacent roof panels 65 and commonly support the adjacent roof panels 65 at the boundary. As a result, even when the frame 24 of the building unit 20 does not exist below the boundary between the adjacent roof panels 65, the roof panels 65 can be supported in common.

As the support beams 68 and 69, a support beam 68 (corresponding to a first support beam) extending in the same direction as the large ridge 64a of the hip portion 63a and the same direction as the large ridge 64b of the hip portion 63b are provided. and a support beam 69 (corresponding to a second support beam) extending to the In this case, even if a horizontal force occurs in any direction on the roof portion 62 during an earthquake or the like, it is possible to provide resistance to the horizontal force. Therefore, the above-described effects can be obtained while suitably ensuring the strength of the roof portion 62 .

A plurality (specifically, two) of the support beams 68 are arranged below the hipped portion 63a, and a plurality of (specifically, two) of the support beams 69 are arranged below the hipped portion 63b. Each support beam 68 is arranged in a row in its longitudinal direction. Specifically, below the hip portion 63a, three bundles 67 are arranged side by side in the direction in which the main ridge 64a extends, and a support beam 68 is arranged between adjacent bundles 67 in the three bundles 67. . Each support beam 69 is arranged on both sides of the main ridge 64b in a plan view. These support beams 69 are arranged facing each other.

Each support beam 68 and each support beam 69 both extend horizontally along the lower surface of the roof panel 65 . In this case, it is possible to prevent the support beams 68 and 69 from becoming an obstacle in the attic space, and when using the attic space, it becomes possible to ensure a large space.

(2) In the above embodiment, the support beams 51 extending in the short side direction of the roof portion 13 and the support beams 52 extending in the long side direction of the roof portion 13 are provided. Only one support beam may be provided.

In addition, in the above embodiment, four support beams 51 and 52 are provided, but the number of support beams 51 and 52 is arbitrary, and may be set to two, three, or five or more as required. good. Alternatively, only one support beam may be provided.

(3) The forms of the support beams 51 and 52 are not necessarily limited to those of the above embodiment. For example, in the above embodiment, the support beam 51 is formed to have the horizontal portion 51a and the inclined portion 51b, but the inclined portion 51b of the support beam 51 may be replaced with an L-shaped portion. In this case, the L-shaped portion has a vertical portion extending downward from the horizontal portion 51a and a horizontal portion extending laterally from the lower end of the vertical portion, and the horizontal portion is connected to the bundle 45B.

DESCRIPTION OF SYMBOLS 10... Building 12... Building main body 13... Roof part 20... Building unit 21... Column 22... Ceiling girders as beams 23... Floor girders as beams 24... Frame body 40... Roof panel 45 . . bundle, 51 .. supporting beam as first supporting beam, 52 .. supporting beam as second supporting beam.

Claims (5)

a building body configured by combining a plurality of building units each including a frame formed by columns and beams;
A unit-type building comprising a roof provided above the building body,
The roof portion is a hipped roof having a large ridge and a corner ridge, and has four inclined roof portions partitioned by the large ridge and the corner ridge,
The four sloped roof portions are configured by a plurality of roof panels arranged side by side,
The four sloped roof portions include a pair of trapezoidal first sloped roof portions and a pair of triangular second sloped roof portions,
a plurality of bundles erected on the frame and disposed below the boundaries of the adjacent roof panels to commonly support the adjacent roof panels;
a support beam that spans between the adjacent bundles and extends across the boundaries of the adjacent roof panels to commonly support the adjacent roof panels;
with
A first support beam extending in a direction orthogonal to the main ridge in plan view is provided as the support beam,
The first support beam extends across a boundary between the roof panel of the first sloped roof section and the roof panel of the second sloped roof section, which are adjacent to each other across the corner ridge. Of each roof panel, a horizontal portion extending horizontally along the lower surface of the roof panel of the second sloped roof portion, and an inclined portion of the first sloped roof portion extending inclined along the lower surface of the roof panel. , and a bent portion bent between the horizontal portion and the inclined portion,
The bent portion is located below the corner ridge,
The unit-type building , wherein the first support beam commonly supports the adjacent roof panels at the bend . 2. A support beam according to claim 1, wherein each said support beam spans between upper ends of said adjacent bundles and is formed to extend generally along said roof panel. unit building. 3. The unit building according to claim 1, wherein the supporting beams are second supporting beams extending in a direction different from that of the first supporting beams in plan view. 4. A modular building according to claim 3, wherein said first support beam and said second support beam are connected to the same bundle. 5. The unit-type building according to claim 1, wherein said support beams are connected to said plurality of bundles respectively.

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