JP2719076B2 - Building roof and construction method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a building roof and a method for constructing the roof.

[0002]

2. Description of the Related Art For example, on the roof of a wooden house or the like,
As shown in FIGS. 5 and 6, there is a truss-type cabin set. On the roof of this building, eave girder 26, 26 is erected between the upper ends of eaves column 25, and hut beam 27 connecting between these eaves girder 26, 26 is lower chord material. The truss 30 is constituted by a pair of rafters 29 inclined toward the eaves girders 26, 26 as upper chord materials.

That is, conventionally, a pair of shed bundles 31 and a central ridge bundle 32 are erected on the shed beams 27, and these two bundles 31, 3
A truss 30 that supports the load of the roof panel 35 from below is provided by arranging rafters 29 on the upper end of the roof 2 with a roof slope via a purlin 33 and a purlin 34. Reference numeral 36 denotes a diagonal reinforcing material, which is interposed between the upper end of the shed bundle 31 and the lower end of the ridge bundle 32.

[0004]

However, in view of the recent shortage of workers, high cost of construction, etc., a waterproof sheet and a roof tile are attached to the upper surface of the roof panel 35 in advance in a factory or the like to form a unit. After transporting the roof panel 35 to the construction site and hanging it into the hut
Are joined to each other to form a roof surface.

However, conventionally, even when the above-mentioned construction method is adopted, the truss 30 is directly assembled at the site, so that the entire construction of the roof still requires a lot of work on the site. Conventionally, a roof panel 35 having a skeletal member 37 for reinforcement on the lower surface is used for rafters of a truss 30.
Since it is mounted on the roof 29, members along the roof flow direction are arranged to overlap in the same direction, and there is much waste in structure.

The present invention has been made in view of the above circumstances, and provides a roof of a building and a method for constructing the roof, which can further reduce the construction labor and material cost at a construction site.

[0007]

In order to achieve the above object,
The present invention has taken the following technical measures. That is, the invention according to claim 1 comprises a pair of rafters, in which the hut beam 13 connecting the two eaves 12 and 12 is made of lower chord material, and which is inclined from the roof ridge 5 toward the two eaves 12 and 12. A truss 21 is formed by using upper and lower chords of the truss 11, and a roof panel 9 is laid on the rafter 11 of the truss 21. After fixing a core truss 14 having a gate-shaped structure narrower than the length of 13, the eaves girder 11 is pre-installed on the lower surface side of the roof panel 9 with the rafters 11.
The truss 21 is constructed by connecting the upper corner portion of the core truss 12 and the upper corner portion of the core truss 14 and connecting a pair of the rafters 11 at the ridge portion 5 at the ends.

The invention according to claim 2 is characterized in that the two eaves girder 12,1
The hut beam 13 connecting the two is made of lower chord material, and the roof ridge
A pair of rafters inclined from 5 toward the eaves girder 12,12
The truss 21 is constructed with the upper chord material of 11, 11
In the roof of a building in which the roof panel 9 is laid on the rafters 11 of the building, a core truss 14 having a gate-shaped structure narrower than the length of the hut beam 13 is provided in the middle of the hut beam 13 and on the upper surface side. The truss 21 is fixed, and the eaves 1
2 and the upper corner portion of the core truss 14 are connected to each other, and a pair of rafters 11 are connected to the ridge portion 5 at their ends.

[0009]

According to the present invention, the core truss 14 is the truss of the hut 3
It functions as an intermediate member 21 and supports the rafter 11 from below at its upper corner. The rafters 11 are initially integrated with the lower surface side of the roof panel 9, are connected between the core truss 14 and the eaves girder 12 after the roof panel 9 is suspended, and thereafter function as upper chord members of the truss 21 of the hut group 3. I do.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. 1 to 3, reference numeral 1 denotes a building such as a house adopted in the present embodiment. The building 1 has a rectangular shape in plan view, has a eaves column 2 along the eave-side outer periphery, and On the eaves pillar 2, there is a ridge roof 4 via a hut 3.

The ridge roof 4 has one large ridge 5 and a corner ridge 6 branching from both ends thereof, and is divided into a pair of trapezoidal roof surfaces 7 and a triangular roof surface 8, respectively.
As shown in FIG. 3, each of the roof surfaces 7, 8 is constituted by appropriately arranging square, trapezoidal and triangular roof panels 9. Each roof panel 9 has a rafter 11 along the roof flow direction integrally fixed to a lower surface of a base plate 10.
On the upper surface of 10, a roof tile is previously tiled at a factory or the like via a waterproof sheet.

The hut group 3 includes an eaves girder 12 erected between the upper ends of the eaves pillars 2, five shed beams 13 connecting the eaves girder 12 in the short side direction of the building 1, and It has a core truss 14 to which each is fixed. This core truss 14
It has a portal structure narrower than the length of 13. That is, the core truss 14 is formed by connecting the bundle pillars 16 to both ends of the upper beam 15 shorter than the hut beam 13, has the middle pillar 17 on the lower surface at the center of the upper beam 15, and has the upper end of the middle pillar 17 and the bundle pillar 16. The lower ends are reinforced with diagonal members 18. The core truss 14 is pre-assembled in a factory or the like, and after being transported to a construction site, is suspended on the shed beam 13 by a crane or the like.

Reference numeral 19 denotes a main house which is disposed in the same direction as the eaves girder 12 to support an intermediate portion of the roof panel 9. In the present embodiment, the main house is provided between the upper corners of each core truss 14 in this embodiment. The connection is made at 19. The purlin 19 may be attached after fixing each core truss 14 on the hut beam 13,
The core trusses 14 may be connected at the purlin 19 and then suspended at once by a crane.

The rafter 11 integrated with the lower surface of the roof panel 9 has a right-angled triangular fitting concave portion 20 at substantially the center of the lower surface and the eaves side. The cross section corners of the purlin 19 and the eaves girder 12 are fitted into the joint recess 20 and the rafters 11 are fixed to the purlin 19 and the eaves girder 12 by connecting metal fittings (not shown), thereby being attached to the hut group 3. Also rafters 11
The ridge end face of the ridge is cut in a tapered shape, and a pair of roof panels 9, 9 arranged on both sides of the large ridge 5 are joined by joining the ridge end faces of the rafters 11 to each other. Are joined.

Therefore, the rafter 9 in this case is a triangular truss 21 having the hut beam 13 as the lower chord material and the main building 5 as the apex.
This truss 21 also acts as a top chord
After hanging 9 on hut 3
11 is fixed to the purlin 19 and the eaves girder 12, and the end of the rafter 11 on the ridge side is connected. Next, the construction procedure of the building roof according to the above configuration will be described.

First, as shown in FIG. 1 (a), a portal-type core truss 14 is suspended on a hut beam 13 by a crane or the like, and is fixed to the center of the upper surface of the hut beam 13. Next, as shown in FIG. 1 (b), a roof panel 9 having a roof tile on the upper surface is hung on the core truss 14 by a crane or the like, and the rafters 11 are joined to a main house 19 and an eave girder at the upper corner of the core truss 14. Then, the roof panel 9 is fixed so as to bridge between the core truss 14 and the eaves girder 12. At this time, the end faces of the rafters 11 of the both roof panels 9 arranged on both sides of the large building 5 are butted against each other.

Then, the rafters 11 butted against each other
After connecting the ridge side of the building with the fixing bracket (not shown),
The ridge wrapper may be constructed along the junction 9, that is, along the main building 5. The roof panels 9 joined to each other with the corner building 6 as a boundary are also connected to the core truss 14 in the same manner as described above. As described above, according to the present embodiment, the core truss 14 is adopted as an intermediate member of the truss 21 of the hut set 3, and the rafter 11 fixed to the roof panel 9 is attached to the core truss 14, so that the hut set 3 Since the truss 21 is configured, the truss 21 can be assembled together with the installation work of the roof panel 9, and the labor for assembling the hut assembly 3 at the site can be reduced.

Moreover, in this embodiment, the core truss 14 is pre-assembled in a factory or the like, and it is only necessary to fix the core truss 14 on the hut beam 13 at the site. Also, since the rafters 11 of the roof panel 9 directly function as the upper chord of the truss 21 of the hut 3
There is no waste in the members, and it is possible to reduce the material cost.

The present invention is not limited to the above embodiment. For example, as shown in FIG. 4, a ridge receiving member 22 is provided upright in the center of a core truss 14, and a ridge rafter 11 is provided at an upper end of the ridge receiving member 22. By mounting the side end, the roof panel 9 can be more firmly fixed. In addition, the present invention is not limited to the building roof 4,
Of course, it can also be used for gable roofs and square roofs.

[0020]

As described above, according to the present invention,
The truss 21 of the hut group 3 was constructed by connecting the rafters 11 previously assembled to the roof panel 9 to the core truss 4 and the eaves girder 12, so that the assembly work of the hut group 3 was reduced, and In addition to the fact that the time required for construction work on site can be greatly reduced, the rafters 11 provided on the roof panel 9 function as the upper chord of the truss 21 as they are, so that the material cost can be reduced as compared with the conventional case.

[Brief description of the drawings]

FIG. 1 is a front view showing a procedure for assembling a roof of a building.

FIG. 2 is a perspective view of a roof of a building.

FIG. 3 is a plan view of the same.

FIG. 4 is a front view of a roof of a building showing another embodiment.

FIG. 5 is a front view of a roof of a conventional building.

FIG. 6 is a perspective view of the same assembly.

[Explanation of symbols]

 3 Hut group 5 Main building (Wing section) 9 Roof panel 11 Rafter 12 eaves girder 13 Hut beam 14 Core truss 21 Truss

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Motoaki Furuno 2-47, Shikitsuhigashi, Namiwa-ku, Osaka-shi, Osaka Prefecture Inside Kubota Corporation (72) Inventor Takashi Nakamura Shikitsu-higashi, Namiwa-ku, Osaka-shi, Osaka 1-chome 2-47 Kubota Corporation (56) References JP-A-63-66347 (JP, A) JP-A-63-268856 (JP, A)

Claims (2)

(57) [Claims] (1) A hut beam (13) connecting between the eaves girder (12) (12)
With the lower chord, and the roof girder (5)
A pair of rafters (11) and (11) inclined toward (12) constitutes a truss (21) using upper chords, and a roof panel (9) is laid on the rafters (11) of the truss (21). On the roof of the building, the hut beam (13) is located in the middle of the hut beam (13) and on the top side.
After fixing the core truss (14) having a gate-shaped structure narrower than the length of the eaves (12) and the core truss (12) with the rafters (11) pre-installed on the lower side of the roof panel (9). 14) The truss (21) is constructed by connecting the upper corners of the truss (11) by connecting a pair of the rafters (11) at the ridge (5) at the ends thereof. Construction method. 2. A hut beam (13) connecting between the two eaves (12) (12)
With the lower chord, and the roof girder (5)
A pair of rafters (11) and (11) inclined toward (12) constitutes a truss (21) using upper chords, and a roof panel (9) is laid on the rafters (11) of the truss (21). On the roof of the building, the hut beam (13) is located in the middle of the hut beam (13) and on the top side.
A core truss (14) having a portal structure narrower than the length of the truss is fixed, and the truss (21) is
The eaves girder with the rafter (11) pre-installed on the underside of (9)
(12) and the upper corner portion of the core truss (14), and a pair of rafters (11) are connected to the ridge portion (5) at the ends thereof. roof.