JP2000160755A - Roof structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive roof structure such that when a ceiling plenum is used as an attic space living room, a sufficient attic living space can be secured and utilized as a comfortable attic space living room by securing heat insulation, and that when it is not used as an attic space living room, the storage of a building unit immediately therebelow is not varied so as to pose no structural problems. SOLUTION: This roof structure is for use with a unitized building 14 where a plurality of roof panels are placed with a predetermined gradient. The beam end 22a of each roof panel is bolted by means of a structural joint member to the roof beam of a building unit 11 immediately therebelow and the gable end 22b of each roof panel is bolted by means of a structural joint member to a gable wall panel 20 at the upper beam of a gable small wall 20, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roof structure having a cabin behind the ceiling of a unit building.

[0002]

2. Description of the Related Art Hitherto, as one means for strengthening a living room in a unit building, a roof structure having a cabin behind the ceiling using a ceiling is known. A roof structure having such a hut back room is formed by attaching a heat insulating material and boards to the interior side of a roof unit or a roof panel using a roof base material reinforced with rafters on a base plate. In addition, a girder truss was interposed between the building unit directly below and the roof unit or roof panel to maintain strength.

In recent years, as shown in FIG.
A sandwich panel 4 sandwiched by surface materials 2 and 3 (plywood particle board, OSB, etc.) attached to the entire surface of both sides of a rigid urethane foam or expanded polystyrene foam via an adhesive has been proposed,
It has been proposed that the sandwich panel 4 be used as an outer wall panel or a roof panel of a unit building (see, for example, JP-A-7-76878).

According to this publication, for example, as shown in FIG. 17, a unit building 10 is disclosed. In this unit building 10, a plurality of living room building units 11.
At the top of the is joined horizontally and vertically,
A plurality of roof units (sandwich panels 4) 13 are arranged on the upper part of the living room building units 11 at a predetermined inclination, and are constructed by mounting a plurality of roof units 14. I have. As shown in FIG. 18, the outer edge of the floor panel 17 is arranged so as to abut against the inner surface of the wall panel 16, attached by nailing or bonding, and the roof panel 16 is attached to the upper edge 16 a of the wall panel 16. The lower part of the panel 13 is placed and attached with nails or an adhesive, etc., to form a shed-back storage (shed-back living room) 18.

[0005]

However, in the conventional roof structure, a part where the girder truss is present cannot be used as a cabin backroom, so that a large space cannot be used. Also, if there is strong solar radiation from the roof,
Simply attaching the heat insulating material from the inside did not provide sufficient heat insulation, and the comfort was insufficient as compared with the other living rooms 11.

Further, in the example of the hut back room 18 using the sandwich panel 4 shown in FIGS. 17 and 18, although the heat insulating property is improved, since the sandwich panel is expensive, the building without the hut back room is provided. The roof was over quality.

Accordingly, the present invention provides a roof structure that can be used as a comfortable cabin backroom by securing sufficient cabin backroom space and securing heat insulation when the back of the ceiling is used as a cabin backroom. It is an object of the present invention to provide an inexpensive roof structure that can be provided without changing the accommodation of a building unit immediately below when not used as a hut back room, without any problem in strength.

[0008]

According to an aspect of the present invention, there is provided a roof structure of a unit building in which a plurality of roof panels are arranged with a predetermined slope. The girder end of the roof panel is bolted to the girder roof beam of the building unit immediately below by a structural joint material, and the roof panel butt end is bolted to the pier wall panel by a structural joint material. It is a characteristic roof structure.

According to the first aspect of the present invention, the girder roof beam and the end of the girder of the roof panel are bolted to each other by a structural joint material, and the girder wall and the roof panel girder wall are provided. Since the ends are joined by bolts using a structural joint material, the joining between the structural body and the roof panel can be made stronger than in the case of using an adhesive or nailing.
In the roof structure according to this, since the horizontal force is dispersed to the roof panel and transmitted to the structural vehicle, it is easy to impart resistance.

In the invention described in claim 2, the roof panel is joined on the vertical line of the girder roof beam of the building unit immediately below, so that the joint is installed on the girder roof beam. The roof structure according to claim 1, wherein the support can be disposed.

According to the second aspect of the present invention, since a support can be provided at the joint of the roof panel, the support is provided at the joint. Thereby, it is possible to have sufficiently strong resistance even when an external force in the direction of the wife is applied. As a result, if the ceiling is used as a flat ceiling that does not need to be used as a living room behind the hut, it is possible to use an inexpensive roof panel without using expensive high-insulation high-strength sandwich panels. can do.

According to a third aspect of the present invention, in the roof structure according to the first aspect, the roof panel is a high-insulation high-strength sandwich panel in which both surfaces of a core filler are sandwiched between surface materials. is there.

According to the third aspect of the present invention, the roof panel is a high-insulation high-strength sandwich panel having sufficient strength to transmit the horizontal force of the roof. Insulation properties can be ensured, and sufficient strength can be obtained even when an external force is applied in the direction of the wife even when the application is performed without providing the support. As a result, it is possible to secure a sufficient space in the cabin back room when using the back of the ceiling as a cabin back room, and to obtain a roof structure that can be used as a comfortable cabin back room because heat insulation can be secured.

In such a roof structure, a high heat-insulating high-strength sandwich panel is disposed only in the upper part of a living room so that a girder roof beam or a masonry wall and a structural joint material can be bolted to each other. This is achieved by not placing high insulation and high strength sandwich panels on the roof panels.

[0015]

First Embodiment A first embodiment of the present invention will be described below with reference to the drawings, taking a unit building by a unit construction method as an example.

FIG. 1 is a diagram showing a main part of a unit building showing an embodiment of the present invention. The same or equivalent parts as those of the conventional unit building will be described with the same reference numerals.

First, a description will be given of the structure of the unit building 10. In this unit building 10, a plurality of roof units 14 are joined to the upper part of a plurality of living room units 11 (a building unit formed substantially in a box shape from columns and beams). Roof part 1 inclined by the slope
9 are formed. The roof unit 14 has a pair of small wife walls 20 (or small wall panels) that are vertically assembled on the short side surface (wife surface) with the long side of the wood edge being assembled. The rafters 21 on the top 20 are indicated by dotted lines.
(21a, 21b) are fixed. In the drawings, a steel frame as a structure forming each unit is partially omitted. The wife small wall 20 and the living room unit 11 are bolted at a point indicated by a double arrow A, and the wife small wall 20 is bolted between girders (not shown).

As shown in FIG. 2, roof panels 13a, 13b,... Are placed on top of the roof units 14, respectively, and the roof panels 13 are connected to each other by nailing with a joint plate (not shown). (Double arrow E in FIG. 1). In FIG. 2, each dashed line B is
The position of a steel frame (not shown) as a structural vehicle such as a girder roof beam is shown. The three living room units 11 and the three roof units 14 are separated by a dashed-dotted line B in the vertical direction and firmly connected by bolts or the like. Are linked.

Each roof panel 13 is formed by joining a plurality of sandwich panels 4. For example, the roof panel 13a is a sandwich panel 4 having a width of 715.5 mm.
a and 4b are joined. The roof panel 13b is a sandwich panel 4c having a width of 1018 mm and a width of 900 m.
m sandwich panels 4d and 4e are joined together, and an eaves panel 4f having a width of 663.5 mm forming an eaves portion is joined. The eave panel 4f is not filled with the core filler 1. Similarly, the keraba portion is not filled with the core filler 1, but details thereof will be described later.

The basic structure of the sandwich panel 4 is as follows.
A heat insulating material such as a rigid urethane foam or a foamed polystyrene foam is used as a filling core material 1, and surface materials 2 and 3 made of OSB (oriented strand board) having a thickness of 11 mm are adhered to the entire surface of both surfaces thereof via an adhesive. This is a sandwiched configuration (see FIG. 16). In this example, a wooden girder or frame member 5 is incorporated at the joint of each sandwich panel 4. Exterior surface material 2
Is used as it is as a field board.

The roof panel 13b has an eaves side edge 2
At 2a, it is joined to the structural joint material 23a (double arrow C in FIG. 1). The details of the joining structure of the eaves side edge 22a are shown in FIG. In this figure, reference numeral 24 denotes a wall constituting the outer wall of the living room unit 11. The wall body 24 has an outer wall material attached outside the studs attached between the floor beam and the ceiling beam, an inner wall material such as a gypsum board attached inside, and a heat insulating material such as glass wool sandwiched therebetween. , But the details are omitted.

A girder roof beam 25a constituting the frame structure of the living room unit 11 is disposed above and inside the wall 24. The girder roof beam 25a has a thickness 38 with the bolt 26.
The wooden structural joint material 23 (23a) of mm is fixed. A hurricane tie 27 made of metal is fixed to the structural joint material 23a.
The edge frame 5e of the sandwich panel 4e and the eaves portion 28
Rafter 21a is fixed.

The surface material 2 extends from the sandwich panel 4e to the eaves portion 28 and is integrally formed as a base plate, while the eaves ceiling material 28a is separately formed of a noncombustible synthetic material. Also, the surface material 3 on the back side of the hut
A gypsum board 34 having a thickness of 12.5 mm is fixed only to the back of the hut by an adhesive, nailing, or the like.

On the other hand, the end 22b on the wife side of the roof panel 13
(Or the side edge of the roof unit 14) is joined to the end wall 20 (double arrow D in FIG. 1), the details of which are shown in FIG. In this figure, the end frame 5 of the sandwich panel 4
b and the girder bar 5c of the roof panel 13 are 38 mm thick wooden.
Is fixed to the structural joint material 23b by nailing or the like.
9 are connected to each other by bolts 30, and the keraba portion 31 is fixed. The surface material 2 extends from the sandwich panel 4 to the keraba portion 31 and is integrally formed as a field plate. On the other hand, the Kebara eave ceiling material 31a is formed of a nonflammable synthetic material.

Next, the operation of the first embodiment will be described.

According to the unit building 10 constructed as described above, as shown in FIG. 5, the force F1 applied to the roof in the vertical direction is partially transmitted to the small wife wall 20 via the structural joint and the living room unit 11 And the remainder is directly transmitted to the living room unit 11.

As shown in FIG. 6, a force F2 applied to the roof in the horizontal direction (girder direction) is transmitted by an in-plane shearing force of the roof panel 13, and a part of the force F2 is transmitted through the structural joint.
0 to the living room unit 11 or
A part is transmitted directly to the living room unit 11 via the structural joint.

Further, as shown in FIG. 7, a force F3 applied in the horizontal direction in the direction of the roof's wife is transmitted by shearing in the plane of the roof panel 13 and transmitted to the living room unit 11 via the structural joint. Here, this roof panel 13
Is a high-insulation, high-strength sandwich panel that has sufficient strength to transmit the horizontal force of the roof, so that even if it is installed without a girder truss, it is sufficient even if external force in the direction of the wife is applied Can have strong resistance. Thereby, when using the underside of the ceiling as a living room behind a cabin, a wide space straddling the three roof units can be used, and a sufficient space behind the cabin can be secured. In addition, since the roof panel 13 has high heat insulating property, the heat insulating property of the cabin back room is ensured, and a roof structure that can be used as a comfortable cabin back room is obtained.

[0029]

[Embodiment 2] Hereinafter, a specific embodiment 2 of the present invention will be described with reference to the drawings, taking a unit building by a unit construction method as an example. Note that the same or equivalent parts as those of the first embodiment will be described with the same reference numerals.

In general, the sandwich panel 4 has excellent heat insulating properties due to a rigid urethane foam or a foamed polystyrene foam as a core filler, and therefore has a problem that it is excellent as a base material for a roof but is expensive. Utilizing this panel for a roof unit that does not have a slab would be excessive quality. Although it is possible to manufacture roof units having different specifications between the case where the hut back room is provided and the case where the hut back room is not provided, it is preferable to use a roof unit having the same basic specifications if possible. The roof unit 14 described in the first embodiment allows a roof unit having the same basic specifications to be used for a normal roof panel, as will be apparent from the following second embodiment.

FIG. 8 shows a frame structure of a roof unit 14 'used in the second embodiment of the present invention. In this roof unit 14 ′, instead of the roof unit 14 of the first embodiment shown in FIG. 1, a girder truss 32 is vertically arranged on a long side surface extending between a pair of small wife walls 20. . The girder truss 32 is disposed directly above the frame structure such as the girder roof beam of the building unit 11 and fixed to them with bolts and nuts (not shown), so that the unit building 10 'shown in FIG. Make up.

In the roof unit 14 'in the unit building 10', since a high-insulation high-strength sandwich panel such as the sandwich panel 4 is not used, a large number of rafters 21 are fixed as shown to maintain the strength of the roofing material. ing. As shown in FIG. 10, an OSB board 2 having a thickness of 11 mm as a field board is fixedly connected to the upper portion of the roof 19 via nails 21 by nailing. On the lower surface of the ceiling joist 33, a gypsum board 34 is nailed and fixed, and behind the ceiling, glass wool 35 as a heat insulating material is laid.

The details of the joining structure near the eaves side edge 13a are shown in FIG.
, The hurricane tie 27 is fixed to the rafter 21a, although there is no edge frame 5e. The rest of the configuration is joined exactly the same as the joining structure of FIG. 3 described in the first embodiment.

On the other hand, the joining structure of the end portion 22b of the roof portion 19 (or the side edge of the roof unit 14) does not have the end frame 5b of the sandwich panel 4 as shown in FIG. 5c is directly fixed to the structural joint material 23b by nailing or the like. The rest of the configuration is joined exactly the same as the joining structure of FIG. 4 described in the first embodiment.

Next, the operation of the second embodiment will be described.

The unit building 10 'thus constructed
According to this, as shown in FIG. 13, the force F <b> 1 applied to the roof in the vertical direction is partially transmitted to the small wall 20 directly or via the girder truss 32, and further transmitted to the living room unit 11. A part is transmitted directly to the living room unit 11.

As shown in FIG. 14, a force F2 applied to the roof in the horizontal direction (girder direction) is transmitted by an in-plane shearing force of the roof panel 13 ', and a part of the force F2 is dispersed to the small wall 20 and the living room unit 11, and a part is directly transmitted to the living room unit 11.

As shown in FIG. 15, a part of the force F3 directed in the horizontal direction in the direction of the roof's wife is transmitted to the girder truss 32 and transmitted to the living room unit 11, and a part is directly transmitted to the living room unit 11. Is transmitted.

The roof panel 13 does not use a high-insulation high-strength sandwich panel having sufficient strength to transmit the horizontal force of the roof. In this case, it can have a sufficiently strong resistance.

The joining of the roof unit with each member is substantially the same as that of the first embodiment. Therefore, when the ceiling is not used as a cabin, the basic specifications of the roof unit are substantially the same. A roof structure using inexpensive roof panels can be used without any change.

Although the embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and even if there is a change in design or the like without departing from the gist of the present invention. Included in this invention.

For example, in the above-described embodiment, an example in which the roof unit and the roof panel are separately provided has been described. However, a so-called roof panel method, a unit method, or the like, in which a roof unit to which a roof panel is fixed in advance is used. Etc. can be adopted.

[0043]

As described above, according to the first aspect of the present invention, the girder roof beam and the end of the girder of the roof panel are bolted by the structural joint material, and Since the wall and the end of the roof panel are joined by bolts using a structural joint material, the connection between the structural body and the roof panel can be made stronger than in the case of using an adhesive or nailing. In the roof structure according to this, since the horizontal force is dispersed to the roof panel and transmitted to the structural vehicle, it is easy to impart resistance.

According to the second aspect of the present invention, since the support can be disposed at the joint of the roof panel, the external force in the direction of the wife can be provided by disposing the support at the joint. Can impart sufficiently strong resistance to the case where is added. As a result, when the ceiling is used as a flat ceiling that does not need to be used as a backstory,
A roof structure using an inexpensive roof panel can be used without using an expensive high-insulation high-strength sandwich panel.

According to the third aspect of the present invention, since the roof panel is a high-insulation high-strength sandwich panel having sufficient strength to transmit the horizontal force of the roof, heat insulation can be ensured. Even if it is constructed without providing a support, it can have sufficiently strong strength even when external force in the direction of the wife is applied. As a result, it is possible to secure a sufficient space in the cabin back room when using the back of the ceiling as a cabin back room, and to obtain a roof structure that can be used as a comfortable cabin back room by securing heat insulation. Effect.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating an appearance of a unit building according to a first embodiment of the present invention.

FIG. 2 is an end view illustrating a joint state of the roof panel 13 according to the first embodiment.

FIG. 3 is an end view illustrating a joint state between a roof panel near an eave and a living room unit according to the first embodiment.

FIG. 4 is an end view for explaining a joining state of the small wife wall and the roof panel according to the first embodiment.

FIG. 5 is a diagram illustrating transmission of force of the unit building according to the first embodiment.

FIG. 6 is a diagram illustrating transmission of force of the unit building according to the first embodiment.

FIG. 7 is a diagram illustrating transmission of force of the unit building according to the first embodiment.

FIG. 8 is a perspective view illustrating an appearance of a roof unit used in Embodiment 2 of the present invention.

FIG. 9 is a perspective view illustrating an appearance of a unit building according to the second embodiment.

FIG. 10 is an end view illustrating a roof structure according to a second embodiment.

FIG. 11 is an end view illustrating a joint state between a roof panel near an eave and a living room unit according to the second embodiment.

FIG. 12 is an end view illustrating a joining state between a small tsum wall and a roof panel according to the second embodiment.

FIG. 13 is a diagram illustrating transmission of a force of a unit building according to the second embodiment.

FIG. 14 is a diagram illustrating transmission of force of a unit building according to the second embodiment.

FIG. 15 is a diagram illustrating transmission of force of a unit building according to the second embodiment.

16 is a schematic diagram illustrating a sandwich panel, FIG. 16 (a) is an exploded perspective view, and FIG. 16 (b) is a perspective view of the sandwich panel.

FIG. 17 is a schematic diagram showing a unit building.

FIG. 18 is a schematic diagram showing a hut back room of the unit building shown in FIG. 17;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Core filler 2, 3 Surface material 4 Sandwich panel (High insulation high-strength sandwich panel) 13 Roof panel 10 Unit building 11 Living room unit 14 Roof unit 20 Wife small wall (Wife wall panel) 21 Rafter 23 Structural joint material 32 Girder truss (Support)

Claims (4)

[Claims] 1. A roof structure in a unit building in which a plurality of roof panels are arranged with a predetermined slope, wherein a girder end of the roof panel is formed by a girder roof beam of a building unit immediately below and a structural joint material. The roof structure, wherein the roof panel end is bolt-joined to the end wall panel by a structural joint material. 2. The roof panel is joined on a vertical line of a girder roof beam of a building unit immediately below, so that a support installed on the girder roof beam can be disposed at the joint. The roof structure according to claim 1, wherein: 3. The roof structure according to claim 1, wherein the roof panel is a high-insulation high-strength sandwich panel in which both surfaces of a core filler are sandwiched between surface materials. 4. The roof structure according to claim 3, wherein the high thermal insulation and high strength sandwich panel uses urethane foam or polystyrene foam as a core filler.