JPH03119243A - Roof truss construction - Google Patents

Abstract

PURPOSE:To make it possible to increase the strength of a roof truss by arranging ascending girders along a descending ridge extending to eaves corners in both sides of a main ridge section, and providing strut members connecting the ascending girders and girder members located downward of them. CONSTITUTION:Ascending girders 12 intersecting with the ends of a ridge board along the ridge board 11 along a main ridge section A and a descending ridge section B and joining with the ridge board/ascending girders joining metal fittings 2 are provided. After that, a main building 13 having the same inclination as that of an inclined roof and joining by making use of ascending girders and main building joining metal fittings 3 between the ascending girders 12 is provided. Ascending beams 14 joining by making use of the ascending girders/ ascending beams joining metal fitting 4 and strut members 5 reinforcing around the connection under the ascending girders 12 are provided. In addition, a principal rafter member 15 and roof panel fixed metal fittings 6 on the surface of the ascending girders 12 are provided along the inclined roof from the ridge board 11. According to the constitution, load acting on the inclined roof can be transferred to beam members.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention can streamline the connection between a climbing beam and a small climbing beam that extends perpendicularly to one eaves edge, and can improve the strength of the connection. Regarding roof frame structure.

[Conventional technology]

H! ! xiI! l panel,
Prefabricated houses, which are formed by arranging panel bodies such as wall panels, are often used, and such houses have a main ridge that forms the ridgeline of the roof, and a wall extending from the end of the main ridge on both sides. A hip-shaped roof with a pair of descending ridges extending in a V-shape at the corners of the eaves is sometimes adopted. It takes M again
The roof assembly of m includes, for example, a ridgepole along the main ridge, a climbing beam along the descending ridge, a small climbing beam that is perpendicular to the eaves and connected to the climbing beam, and a main building that connects the climbing beams horizontally. It is formed using frame materials.

[Problem to be solved by the invention]

In order to increase the productivity, strength, and quality of building a house with such a roof assembly, it is necessary to improve the workability, strength, and quality of the roof construction.

On the other hand, a climbing beam usually consists of a long body that connects the end of the main ridge and the corner of the eaves.

Conventionally, the small climbing beams extending perpendicularly from the eaves were welded directly to the climbing beams, and no bundles were provided to support the joints. However, this directly affected the climbing and reduced the strength of the M-type string.

In the present invention, the load acting on the climbing beam can be transmitted downward by placing the bundle material near the connection between the climbing beam and the climbing small beam.
The aim is to provide a roof assembly structure that improves roof assembly strength and helps stabilize quality.

[Means to solve the problem]

The present invention provides a climbing beam that extends from the end of the main ridge section to the eaves corners on both sides of the main ridge section along a descending ridge section, and the lower end of the climbing beam extends to the eaves and is perpendicular to the eaves corner. A roof assembly structure in which the upper ends of the climbing beams are connected, and bundles are arranged near the connection part to connect the lower surface of the climbing beams with horizontal beams below the climbing beams and perpendicular to the eaves. be.

[Effect]

By providing a bundle material that connects the climbing beam and the beam material located below it near the connection between the climbing beam and the small climbing beam, the load acting on the sloped roof extending toward the picture side of the climbing beam can be bundled. It can be transmitted to the beams through the materials, improving the strength of the roof assembly.

〔Example〕

An embodiment of the present invention will be described below based on the drawings.

FIG. 1 shows an example of a roof assembly in which the roof assembly structure of the present invention is adopted, with each member simplified, and FIG. 2 is a partially enlarged plan view. , by attaching the roof panel P as shown in Figure 3,
It has a main ridge part A, and two lower ridge parts B, B extending from the end of the main ridge part A to the eave corner parts C on both sides of the main ridge part A,
A sloping roof R1 is sandwiched between the descending ridge portions B and B, and a pitched roof R2, which faces the descending ridge portion B and is connected to the main ridge portion A, forms a groin-like roof. are doing.

In addition, in the case shown in FIG. 3, the roof panels P are triangular roof panels P1 and Pl located on both sides of the sloping roof R1.
and a trapezoidal roof panel P2, R2 which is separated at the end of the main ridge part A on the inner side thereof, and a triangular, trapezoidal roof panel P3 which is located on the sloped roof R2 and whose side end faces match the roof panels P1 and R2. , R4 and a rectangular roof panel P5 extending from the main ridge A. Rain covers 10A are attached to the main ridge part A and the lower ridge part B, and an eaves cover 108 surrounds the eaves.

Furthermore, as shown in FIG. 4, taking the rectangular roof panel P5 as an example, the roof panel P is attached to a surrounding frame pb to which frame materials Pa...
A roofing material Pa is mounted through the frame material Pa, and a face door material Pf with a cross-sectional shape is attached to the frame material Pa located at the edge of the eaves. The frame material Pa is made of channel steel with an upper flange Pa2 at the upper end of the web Pal and a lower flange Pa3 at the lower end thereof projecting inward, and the WIl panel P has a removable lifting fitting Pg. After the roof assembly is constructed, it is lifted up by a crane or the like and placed on the roof assembly to form the roof of the house. In addition, triangular shape,
The trapezoidal roof panels P1 to P4 each include a triangular and trapezoidal surrounding frame pb.

The Wm group shown in Figure 1□ is the ridgepole 11 along the main ridge part A
, a climbing beam 12.12 whose upper end intersects with the end of the seed tree 11 and is joined using the purlin-to-beam joining fittings 2 along the descending ridge portion B, and the sloped layer flR1.
The slope is the same as that of the climbing beam 12.
The main building 13 is joined using the purlin joining fittings 3.3, and above the main building 13, from the climbing beam 12 to the inclined layer 1.
The climbing beam 14 according to the present invention, which is arranged orthogonally to the eaves along 1R2 and is joined using the climbing beam/climbing beam joining fitting 4, and the vicinity of its connection part are reinforced with the lower surface of the climbing beam 12. The bundle material 5 according to the present invention and the sloped roof R from the purlin 11
Gassho lumber 15 arranged perpendicularly to the eaves along 2;
A bundle-shaped supporting material 14A that supports the lower end of the climbing beam 14 is arranged in the 11 sets of matayas, while a roof panel fixing fitting 6 for receiving the side end surface of the roof panel P is installed on the upper surface of the climbing beam 12.
···- are provided, and the roof assembly is mounted on the main body frame.

The main frame includes corner pillars 16A, 16A erected at the eaves corner portion C, inner pillars i6B, 16B arranged between them and along the eaves of the sloped layer flR1, and sloped layer m
A middle pillar 16C (generally referred to as pillar r6) is provided along the eaves of R2. In addition, between the pillars 16A, 16B, and 16B, there are inner and outer nose bases M17A, 17B, and 17B that connect their upper ends.
Pillar 16A.

Nose purlins 17c and 17C (generally referred to as nose purlins 17) connecting between 16C and 16C are respectively bridged. Also pillar 16B, 1
6B and 16C have beams 18A and 18 perpendicular to each eaves.
A, 18B protrude, and the nose purlin 17C is provided with another beam member 1 located below the climbing beam 14, orthogonal to the nose purlin M17C, and intersecting with the beam members 18A, 18A.
8C is placed.

Further, on the main body frame, there are pillar panel holders 7.7 located at the upper ends of the inner pillars 16B and 16B to receive the roof panel P.
are arranged, and the lower end of the climbing beam 12 is fixed using the joining fittings 8A, 8A at the upper end of the pillars 16A and 16A at the corner, and the lower end of the gassho material 15 is fixed by the joining fitting 8B at the upper end of the pillar 16C. do.

Furthermore, panel support fittings 9 for supporting the roof panel P are provided on the nose purlins 17A, 17C.

Said purlin 11. The climbing beams 12, the main building 13, the climbing beams 14, the gassho materials 15, the nose purlins 17, and the beam materials 18 are all made of channel steel with an upper flange b1 and a lower flange C provided above and below the web a. In the example, the column 16 is also formed using channel steel. Note that the nose purlin 17 facing the groove of the pillar 16 is fixed using a joint plate 16a extending from the groove, and the nose purlin 17 faces the flanges b and c of the pillar 16 (the upper surface of the nose purlin 17 is fixed by using the joining fittings 8A and 8f3). Attach the bottom surface to the L-shaped fitting 16b...
Fixed by...

Further, the ridgepole 11 is a ridgepole 11 that is interrupted by the gassho material 15.
A, IIB, and each ridgepole 11AS11B is fixed horizontally along the main ridge part A by a joint plate 15a extending integrally from the joining part of the gassho material 15.

As shown in Fig. 5.6, the climbing beam 12 along the descending ridge portion B has the purlin/beam climbing joint fitting 2 located at the upper end;
The climbing beam/purlin joining fitting 3 located in the middle, the joint plate 12A located at the lower end and connected to the joining fitting 8A, and the connecting fitting 4 located at the mounting position of the climbing beam/climbing small beam joining fitting 4, and at the top. , a mounting plate 12B that connects the lower flanges b and c and is perpendicular to the longitudinal direction of the climbing beam 12 is attached in advance.

The purlin/beam climbing joint fittings 2 are as shown in Figs. 5 to 7 and 10 to 1.
As shown in FIG. 2, it comprises a ridge-climbing fixing piece 21 that is attached to the web a of the ridge beam 12, and a purlin attachment piece 22 that is connected to the ridge-climbing fixing piece 21 and matches the web a of the purlin 11, and The ridgepole attachment piece 22 is attached to the ridgepole 1 with respect to the ridgeline fixing piece 21.
1 and the climbing beam 12 are bent at an angle where the webs a and a intersect.

The purlin-to-beam joining fittings 2 are bolted to opposing sides of the webs a, a of each of the joists 12, 12 by means of the joist fixing pieces 21, respectively.

In addition, during the construction of the 12.12 climbing beams, each climbing beam 12.12
The ridgepole attachment piece 22.22 was installed in advance on the ridgepole 11.
The webs a are sandwiched between the two, and the bolts passing through the holes are used to connect them.

As a result, the upper end of the climbing beam 12 and the end of the purlin 11 are
It can be integrally and firmly joined, and its installation structure can be simplified.

The climbing/purlin joining fittings 3 are as shown in Fig. 2, Fig. 5.61,
As shown in FIGS. 8 and 13, it includes a beam-climbing fixing piece 31 that is fixed in advance to the web a of the girder 12, and a purlin attachment piece 32 that fits the web a of the main building 13.

The beam climbing fixing piece 31 has the beam climbing fixing piece 31 at both ends.
The main building attachment piece 32 is formed by providing overhanging pieces 33 and 34 that are bent at right angles to the main building and by bending the outer end of the lower overhanging piece 34. In addition, overhang piece 3
3.34 has a trapezoidal shape, so that when the beam climbing fixing piece 31 is bolted to the climbing beam 12 to the web a, the purlin attachment piece 32 extends horizontally in the direction of the purlin 13 and also extends at the slope. 71 perpendicular to the plane containing the root R1. As a result, when the web a of the main building 13 is bolted to the main building attachment piece 32, the main building 13 tilts at the same slope as the sloped roof R1. 31, a reinforcing piece 35 is provided to connect the main building attachment piece 32 and the overhanging pieces 33 and 34 at each intermediate height, and a backing plate 12c is attached to the back surface of the web a of the climbing beam 12.

Therefore, by attaching the beam/purlin joining fittings 3 to the climbing beam 12 in advance and then passing the climbing beam 12 over the frame, the purlin 13 can be installed efficiently and with high precision.

In the roof assembly structure of the present invention, the climbing beam 12 and the climbing beam 14 are connected, and a bundle material 5 is provided on the lower surface of the climbing beam 12 and near the connection part, and the climbing beam 12 and the climbing beam 14 are connected to each other. are joined using the climbing beam/climbing beam joining fittings 4.

As shown in FIGS. 2 and 14, the climbing beam/climbing beam connecting fitting 4 is a bent flat plate, and is connected to the climbing beam 1.
4, a climbing beam fixing piece 42 is attached to the mounting plate 12B of the climbing beam 12.

Further, the climbing beam attachment piece 41 pre-attached to the climbing beam 14 allows the climbing beam 14 to be perpendicular to the eaves and above by bolting the climbing beam fixing piece 42 to the mounting plate 12B. The flange b is inclined with respect to the beam climbing identification piece 42 so that the upper surface of the flange b is parallel to the plane including the slope layer mR2, and the climbing beam/climbing beam connecting fitting 4 is connected to the climbing beam mounting piece as described above. 41
The climbing beam 14 is bolted in advance to the climbing beam 14, and therefore, by bolting the beam fixing piece 42 to the mounting plate 12B, the climbing beam 14 can be correctly installed.

Note that the lower end portion of the climbing small beam 14 is supported by the support member 14A on the beam member 18c.

As shown in FIG. 14.15, the bundle material 5 has a support material 52 attached to a bottom plate 51 bolted to the upper surface of the beam material 18C.
A receiving piece 53 is provided to which the lower surface of the climbing beam 12 is bolted.

Also, since the climbing beam 12 and the beam material 18C form an angle of approximately 45 degrees, the bottom piece 51 and the receiving piece 53 are inclined at the same angle in the plane, and the left and right bundle materials 5.5 are tilted in opposite directions. lean towards.

In this way, the climbing beam 12 and the climbing beam 14 are connected using the climbing beam/climbing beam joining fitting 4, and in the vicinity of the connection part, the climbing beam 12 and the beam material 18C below it are connected. are connected by the bundle material 5. Therefore, climb the small beam” 4
At the same time, the load acting on the beam 12 at the connection part is reduced by reducing the load acting on the beam 18C at the connection part.
It can be transmitted to the yata&I1 strength.

Further, as described above, the roof panel fixing fittings 6 are attached to the upper surface of the climbing beam 12, and the side end surfaces d of the roof panels P forming the two sloped roofs R1 and R2 that intersect on the climbing beam 12 are bolted. There is.

The roof panel fixing fittings 6 include a pair of left and right roof panel fixing fitting pieces 6A and 6B, as shown in detail in Fig. 16.17.
including.

The roof panel fixing metal pieces 6A and 6B are attached to the upper end of the vertical piece 62 rising from the bottom piece 61 bolted to the upper surface of the climbing beam 12 by being bent to match the side end face d of the roof panel P. A panel mounting piece 63 is provided in contact with the end surface d. Moreover, the roof panel fixing metal pieces 6A and 6B are fixed by fixing the bottom piece 61 to the upper flange b and bolting the frame material Pa facing the panel attachment piece 63.
The side end face d of the roof panel P can be efficiently fixed at a predetermined inclination angle. Furthermore, by changing the height of the upright piece 62, the mounting height of the roof panel P can be freely set.

In addition, as shown in FIG. 1, such a roof panel fixing fitting 6 can also be used on the purlin 11, and
The rain cover 1OA is attached between the adjacent roof panels P and P after they are attached.

〔Effect of the invention〕

In this way, the roof assembly structure of the present invention is provided with a bundle material that connects the climbing beam and the beam located below it near the connection point between the climbing beam and the climbing small beam. The load acting on the sloped roof on both sides can be transmitted to the beams through the climbing beams and bundles, improving the strength of the roof assembly and helping to stabilize quality.

[Brief explanation of drawings]

FIG. 1 is a perspective view illustrating a roof assembly to which the structure of the present invention is adopted, FIG. 2 is a plan view showing an embodiment of the present invention, and FIG. 3 is a roof assembly mounted on the roof assembly of FIG. A perspective view schematically showing the arrangement of the roof panels; FIG. 4 is a perspective view showing an example of the roof panel;
Figure 5 is a front view showing the climbing beam, Figure 6 is its plan view, Figure 7
The figure is a 1.1 line arrow view showing the installation condition of the ridgepole and climbing joint fittings, and Figure 8 is the 5th line view showing the installation condition of the climbing beam and purlin connection fittings.
Figure 9 is a cross-sectional view taken along line mm in Figure 5, Figure 10 is a perspective view illustrating the purlin and joist joint fittings, and Figure 11 is the purlin and joist joint fittings. A plan view showing the installation state of the
Fig. 12 is a front view thereof, Fig. 13 is a perspective view illustrating a beam/purlin joint fitting, Fig. 14 is an enlarged front view showing an embodiment of the present invention, and Fig. 15 is an example of a bundle material. FIG. 16 is a perspective view illustrating the roof panel fixing metal, and FIG.
The figure is a sectional view showing the attached state. 4...--Beam climbing/climbing beam joint fittings, 5...-Bundle material, 11...Purlinary pole, 12...--Climbing beam, 14
・-Climbing beam, 41-Climbing beam mounting piece, 42・-・
- Climbing fixed piece, 8 - Main ridge part, B -
Descending part.

Claims (1)

[Claims] 1. A climbing beam is arranged along a descending ridge extending from the end of the main ridge to the corner of the eaves on both sides of the main ridge, and on the ascending beam, a climbing small whose lower end extends to the eaves and is perpendicular to the eaves. A roof assembly structure in which a bundle is arranged to connect the upper ends of the beams and connect the lower surface of the beam in the vicinity of the connecting portion to a horizontal beam below the beam and perpendicular to the eaves.