JP2000096758A - Framework structure for hip roof and construction method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a framework structure for hip roof and its construction method which permit accurate and easy assembling of the roof. SOLUTION: A plurality of triangular roof trusses each constituted of a bottom chord member and a top chord member are erected in parallel to each other, a ridge beam is erected between the tops of respective roof trusses, the bottom chord member is supported by eaves girders parallel to the ridge beam, thereby creating a framework construction comprising roof trusses located at the end portions of gable direction, hip rafters, eaves girders, rafters all used for building the hip roof structure. Therefore, a plurality of ceiling joists 30 are erected in parallel between the bottom chord member 22 of the roof truss 21 located at the end portion in gable direction and a eaves girder 12 located at a right angle with the longitudinal direction the ridge, eaves girders 6, 12 arranged in two directions are alternately extended from two eaves corners 14 to the top of the roof truss 21 thereby erecting a hip rafter 31 as a single member, and the hip roof is constructed with the eaves girder 12 arranged at a right angle to the longitudinal direction of the ridge beam 24, and roof rafters installed between the hip rafters 31 and the top portion 27 of the girder roof truss 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a frame structure of a ridge roof and a construction method.

[0002]

2. Description of the Related Art Recently, many buildings with a roof roof have been constructed in recent years because they have a good finish in rain and have an elegant appearance. Conventionally, the frame structure of this ridge roof is as shown in FIGS.

In each figure, an isosceles triangle roof truss 1 composed of a lower chord 2 and an upper chord 3 made of channel steel, respectively.
a is erected in parallel to each other, a purlin 5 is erected between the tops 4 of the roof trusses 1a, and both ends of the lower chord 2 are supported and fixed to an eave girder 6 arranged parallel to the purlin 5.

Further, a roof truss (hereinafter referred to as a girder roof truss) 1 disposed at both ends of the purlin 5 is further composed of a lower chord 7, a horizontal upper chord 8 and left and right diagonal members 10 on the wife side. A plurality of trapezoidal trusses 11 whose height is gradually reduced toward the outside are arranged in parallel with each other, and the lower chord members 7 are supported and fixed to eaves girders 6 parallel to the purlin 5.

The eaves girder 6 is provided with an eaves girder 12 arranged at right angles to the purlin 5, and each eaves girder 6, 12 is supported and fixed to the upper ends of a plurality of pillars 13 for constructing the wall of the building. I have.

From the two eave corners 14 where the two eaves girders 6 and 12 intersect at right angles, the horizontal upper chord member 8 and the two oblique members 10 on the outermost trapezoidal truss 11a of the plurality of trapezoidal trusses 11 are formed. The corner block 15 extends toward the intersection. Also, the horizontal upper chord 8 of the outermost trapezoidal truss 11a
, A truss 1 distributed between a corner block 15 and one eave girder 12
6b is provided. Upper chord 3 of girder roof truss 1
And the horizontal upper chord 8 of the trapezoidal truss 11, the two obliques 10,
The field base plate 17 is fixed to the distribution truss 16b, and a ridge roof is constructed.

[0007]

The conventional frame structure of the ridge roof has a structure in which a plurality of trapezoidal trusses 11 are arranged in parallel, and a horizontal upper chord member 8 of an outermost (lowermost) trapezoidal truss 11a. Distribution truss 16b between one eaves girder 12
Are provided, (A) a large number of three-dimensional intersections shown by A in FIG. 9 occur, (B) the number of joints with each member increases, and (C) many members are required. . Therefore, there is a drawback that the number of construction steps and the cost of members increase. (D) Further, the corner block 15 does not extend from the eave corner 14 to the ridge section 18, and the corner block 15 is cut off as shown by a dotted line 9 in FIG. Since it is not a simplified structure, there are problems such as difficulty in securing accuracy.

[0008] An object of the present invention is to provide a frame structure and a construction method of a ridge roof which have solved the above-mentioned conventional disadvantages.

The present invention is based on a novel idea, and the following points are pointed out as points of improvement in the building roof. By making the corners continuous from the eaves corner to the ridge, accuracy is ensured, the number of junctions and junctions is reduced, and the number of members is reduced. If it becomes necessary to support the corner block at the middle part in terms of strength, a corner block truss is assembled or a trapezoidal truss is arranged below the corner block so that the corner block is not cut. By assembling the ceiling joist first and using this ceiling joist as a scaffold, it is possible to assemble a hut above the ceiling. The ceiling joist also serves as the lower chord of the truss.

[0010]

SUMMARY OF THE INVENTION Based on the above-mentioned points of improvement, the present invention has the following configuration. The frame structure of the building roof according to the present invention is composed of a lower chord material and an upper chord material.
A plurality of square roof trusses are erected in parallel with each other, a ridge is erected between the tops of each roof truss, the lower chord is supported on an eave girder parallel to the ridge, and a girder roof truss located at the end in the wife direction. A corner structure, an eaves girder, and a rafter erected on these, a frame structure in which a ridge is constructed, the lower chord of the girder roof truss located at the end in the wife direction, and at right angles to the longitudinal direction of the purlin A plurality of ceiling joists are erected in parallel between the eaves girder and the eaves girder arranged in the two directions. From each of two eaves corners, the eaves girder extends to the top of the girder roof truss and is a single-piece corner block. And a rafter is erected between the eave girder, a corner block, and the top of the girder roof truss, which are arranged at right angles to the purlin longitudinal direction. In the present invention, a trapezoidal truss is disposed in parallel with the girder roof truss, the lower chord is supported by an eave girder arranged in parallel with the purlin, and the horizontal upper chord of the trapezoidal truss supports the corner block, The end of the ceiling joist may be supported by the lower chord of the trapezoidal truss instead of being supported by the lower chord of the girder roof truss. Further, in the present invention, a corner chord truss is constructed by erection of a corner chord lower chord between the corner chord, the eaves corner, and a lower chord center part of a girder roof truss. According to the present invention, a plurality of triangular roof trusses composed of a lower chord material and an upper chord material are erected in parallel with each other, a purlin is erected between the tops of the roof trusses, and the lower chord is mounted on an eave girder parallel to the purlin. A girder roof truss which is supported and is located at the end in the wife direction, comprising a girder roof truss, a corner block, an eaves girder, and a rafter erected therewith, the girder roof being located at the end in the wife direction. The lower chord of the truss is supported by the eaves girder parallel to the purlin, and then the lower chord of the girder roof truss,
A plurality of ceiling joists are laid in parallel between the longitudinal direction of the purlin and an eave girder located at a right angle, and then from each of the two eave corners where the eave girder arranged in the two directions intersect, the girder roof truss is It extends to the top and installs a one-piece corner block, and then a rafter is installed between the eaves girder arranged at right angles to the purlin longitudinal direction, the corner block, and the top of the girder roof truss. And In addition, the construction method of the ridge roof according to another invention is as follows.
Plural triangular roof trusses composed of lower and upper chords are erected in parallel, and a purlin is erected between the tops of each roof truss.
A method of supporting a lower chord material on an eave girder parallel to the purlin, and constructing a ridge with a girder roof truss located at the end in the wife direction, a corner bar, an eaves girder, and a rafter erected on these, ,
Girder roof truss located at the end in the wife direction, and
The lower chord of the trapezoidal truss arranged in parallel with this is supported by the eaves girder parallel to the purlin, and then a plurality of eaves girder between the lower chord of the trapezoidal truss and the eaves girder perpendicular to the longitudinal direction of the purlin. The ceiling joists are erected in parallel, and then extend from the two eave corners where the eaves girder arranged in the two directions intersect to the top of the girder roof truss to install a single member corner, and the corner The truss is supported by the trapezoidal truss, and then, a rafter is erected between the eaves girder, a corner block, and the top of the girder roof truss, which are arranged at right angles to the longitudinal direction of the purlin.

[0011] According to the present invention, a continuous single-piece corner piece is extended and erected between the top of the girder roof truss at the end of the girder roof and the corner of the eaves. Since the top of the girder roof truss and the eaves girder are integrated, accuracy is ensured, and the conventional trapezoidal truss is reduced accordingly, thereby reducing the intersection and the joints of each member. Also, the number of members is reduced.

If it becomes necessary to support the corner block at the intermediate portion, a corner truss is assembled, or a trapezoidal truss is provided under the continuous corner block without cutting the corner block to reduce the strength of the corner block. improves.

Further, since a ceiling joist is erected between the lower chord of the girder roof truss or the lower chord of the trapezoidal truss at the end of the wife side and the eaves girder arranged at right angles to the purlin, this ceiling joist is first placed. By assembling and using this as a scaffold, a hut can be assembled at the upper part of the ceiling, and the joist of the ceiling can also serve as the lower chord of the truss.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show the construction order in the first embodiment, and FIGS. 4 and 5 are explanatory diagrams.

In the frame structure of the ridge roof according to the first embodiment, a channel steel made of a thin steel plate is used for each member, and two sets of eaves girders 6 and 12 which are parallel to each other are rectangular. It is assembled. Each eave girder 6, 12 is attached to the upper end of a plurality of pillars 19 (shown in FIG. 4) for attaching the wall surface of the building.

FIGS. 1 to 3 show one of the wives on the ridge roof. That is, in the figure, the girder roof truss 21 located at the end on the end side of the isosceles triangle formed by the lower chord member 22 and the two upper chord members 23 is shown. At the time of actual construction, a plurality of roof trusses are arranged in parallel at predetermined intervals from the girder roof truss 21 to the left in the drawing, and a ridge 24 shown in FIG. The metal fittings 25
And is fixed by a fixing bracket. The girder roof truss 21 is located at the end in the wife direction and mainly bears the roof load.

With respect to the eaves girders 6 and 12 formed in a rectangular shape, both ends of the lower chord material 22 of the girder roof truss 21 are placed and supported on the opposing eaves girder 6, and the fixing fitting 2 is connected via a joint hardware 25.
6 fixed. In the girder roof truss 21, a bundle member 28 is erected between the top 27 and the lower chord material 22,
Further, a plurality of lattice members 29 are provided between the two upper chord members 23 and the lower chord members 22, and the framework thereof is reinforced.

Between the lower chord material 22 of the girder roof truss 21 and one eave girder 12 parallel to the lower chord material 22,
A plurality of ceiling joists 30 are laid in parallel and at regular intervals,
It is fixed with a fixing metal via a joint metal. One end of the ceiling joist 30 is supported and fixed on the upper surface of the eave girder 12, and the other end is at the same height level as the lower chord material 22 of the girder roof truss 21, and the end face is connected to the side surface of the lower chord material 22 via a metal joint. It is fixed by a fixing bracket.

Next, as shown in FIG. 2, the eaves girder 6, arranged in two directions, extends from two eave corners 14 where the eave girder 14 intersects to the top 27 of the girder roof truss 21 to extend into a one-piece corner block 31. Is mounted, and the joint between the top 27 and the eaves corner 14 is fixed with a fixing fitting via a joint metal.

Next, as shown in FIG. 3, a plurality of rafters 16 a are erected between the eaves girder 12 arranged at right angles to the purlin 24, and the corner block 31 and the girder roof truss 21. An inclined frame with a ridge roof is constructed by being fixed by 26.

In the first embodiment, when it is necessary to further improve the strength of the corner block 31, the corner block 31 itself has a truss structure as shown in FIG. That is, the girder roof truss 21 starts from the eave corner 14 where the corner block 31 and the eave girder 6 and 12 intersect.
The lower chord material 32 is erected around the center of the lower chord material 22, and a plurality of lattice materials 2
9 will be built to build a corner truss. In the above, the lower corner chord material 32 is arranged on the upper surface of the ceiling joist 30.

In the first embodiment, the corner block 31 is formed by a single member and is continuous, and the eaves girders 6 and 12 are connected to the top 27 of the girder roof truss 21, so that the accuracy of the descending ridge is ensured. It is easy and eliminates a conventional three-dimensional intersection such as a trapezoidal truss, so that the number of members is reduced and the number of joints is reduced.

Further, after assembling the girder roof truss 21, the ceiling joist 30 is assembled, and then the corner wood 31 and the rafter 1 are assembled.
Since the hut is assembled using 6a or the like, the ceiling joist 30 can be used as a scaffold for the hut assembly, and the construction is simplified.

FIGS. 6 to 8 show a second embodiment. In the second embodiment, in order to improve the strength of the corner block 31, the reinforcement structure is the first structure.
This is different from the corner truss type in the embodiment. In the second embodiment, the trapezoidal truss 33 is arranged below the corner truss 31 extending from the eaves corner 14 to the ridge portion 18 to increase the strength of the corner truss 31. are doing.

As shown, the trapezoidal truss 33 is
4, a horizontal upper chord 35 and two diagonal members 36 in a trapezoidal configuration, and a lower chord 34, horizontal upper chords 35 and 2
A lattice member 37 is provided between two slant members 36.

The trapezoidal truss 33 is erected in parallel with the girder roof truss 21 before the ceiling joist 30 and the corner block 31 are assembled, and, like the girder roof truss 21, both ends of the lower chord material 34 are parallel to the purlin 24. It is supported and fixed to the eaves girder 6. In the second embodiment, one end of the ceiling joist 30 is applied to the lower chord material 34 of the trapezoidal truss 33, and is fixed to the lower chord material 34 by a fixing fitting via a joint hardware.

After assembling the above-mentioned ceiling joist 30, the corner piece 31 of one member is moved from the eave corner 14 to the girder roof truss 21.
Is mounted on the top portion 27. In this case, as shown in FIG. 6, an intermediate portion of the corner block 31 is supported by a horizontal upper chord member 35 of a trapezoidal truss 33, and the fixing bracket 2 is connected to this member via a joint hardware 25.
6 fixed. In the above-mentioned work, the scaffold plate 38 is placed on the ceiling joist 30, and work can be performed thereon. As described above, in the frame structure of the ridge where the corner block 31 is supported by the trapezoidal truss 33, the roof load is received by the girder roof truss 21, the corner block 31, the trapezoidal truss 33, the ceiling joist 30, and the eave girder 6 , 12 to the wall.

[0028]

As described above, according to the present invention,
A continuous single-piece corner piece is extended and erected between the top of the roof truss at the end in the wife direction and the corner of the eave, so the roof truss top and eave girder are connected via this continuous corner piece. Are integrated to ensure the frame accuracy of the wing roof, and accordingly, the conventional trapezoidal truss is reduced, thereby reducing the junction between the overpass and each member and the number of members Therefore, it is possible to reduce construction costs and material costs.

In the case where it becomes necessary to support the corner block at the intermediate portion, the truss of the corner block may be assembled under the continuous corner block without cutting the corner block or the trapezoidal truss may be provided to reduce the strength of the corner block. improves.

Further, since a ceiling joist is erected between the lower chord material of the roof truss or trapezoidal truss at the end of the wife and the eave girder arranged at right angles to the purlin, the ceiling joist is first assembled and this is mounted on a scaffold. By doing so, it is possible to form a shed in the upper part of the ceiling, and the ceiling joist can also serve as the lower chord of the truss.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first construction step of a ridge frame according to a first embodiment.

FIG. 2 is a perspective view showing a second construction step.

FIG. 3 is a perspective view showing a third (final) construction step.

FIG. 4 is an explanatory side view of the garter roof truss according to the first embodiment.

FIG. 5 is a plan view of FIG. 4 and shows a state in which a scaffold is placed on a ceiling joist;

FIG. 6 is a perspective view of a ridge frame according to a second embodiment.

FIG. 7 is a plan view of FIG. 6, showing a state in which a scaffold is placed on a ceiling joist;

FIG. 8 is a side view of a trapezoidal truss.

FIG. 9 is a perspective view showing an example of a conventional ridge roof.

10A is a plan explanatory view of the ridge in FIG. 9; FIG.
Is a side view of the trapezoidal truss of FIG. (A), (C) is a side view of the distribution truss (rafter) of FIG. (A), and (D) is a side view of the corner block of FIG. (A).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Roof truss 2 Lower chord material 3 Upper chord material 4 Top part 5 Purlin tree 6 eaves 7 Lower chord 8 Horizontal upper chord 10 Diagonal material 11 Trapezoidal truss 12 eaves 13 Pillars 14 eaves corner 15 Corner wood 16a Rafter 16b Distribution truss 17 Field board 18 ridge part 19 pillar 21 girder roof truss 22 lower chord material 23 upper chord material 24 purlin wood 25 joining hardware 26 fixing bracket 27 top part 28 bundle member 29 lattice material 30 ceiling joist 31 corner wood 32 corner wood lower chord material 33 trapezoidal truss 34 lower chord material 35 horizontal upper chord material 36 diagonal material 37 Lattice 38 Scaffold

Claims (5)

[Claims] 1. A plurality of triangular roof trusses composed of a lower chord material and an upper chord material are erected in parallel, a purlin is erected between the tops of the roof trusses, and the lower chord is mounted on an eave girder parallel to the purlin. A girder roof truss that supports and is located at the end in the wife direction, a frame structure in which a ridge is constructed by a corner block, an eaves girder, and a rafter erected therewith, wherein the girder is located at the end in the wife direction. A plurality of ceiling joists are laid in parallel between the lower chord material of the roof truss and the eave girder located at right angles to the purlin longitudinal direction, and the eave girder arranged in the two directions intersects from each of the two eave corners. A girder roof truss structure that extends to the top of the girder roof truss and has a one-piece corner block, and a rafter erected between the eave girder and the corner block at right angles and parallel to the longitudinal direction of the purlin. 2. A trapezoidal truss is arranged in parallel with the girder roof truss, the lower chord is supported by an eave girder arranged in parallel with the purlin, and the corner chord is supported by a horizontal upper chord of the trapezoidal truss. 2. The frame structure of a ridge roof according to claim 1, wherein one end of the ceiling joist is supported by the lower chord of the girder roof truss, instead of being supported by the lower chord of the girder roof truss. 3. The corner truss according to claim 1, wherein a corner chord lower chord is erected between the corner chord, the eave corner, and a lower chord center part of the girder roof truss. Roof frame structure. 4. A plurality of triangular roof trusses composed of a lower chord material and an upper chord material are erected in parallel, a purlin is erected between the tops of the respective roof trusses, and the lower chord is mounted on an eave girder parallel to the purlin. A girder roof truss which is supported and is located at the end in the wife direction, comprising a girder roof truss, a corner block, an eaves girder, and a rafter erected therewith, the girder roof being located at the end in the wife direction. The lower chord of the truss is supported by the eave girder parallel to the purlin, and then a plurality of ceiling joists are parallelized between the lower chord of the girder roof truss and the eave girder located at right angles to the purlin longitudinal direction. Then, from each of the two eave corners where the eaves girder arranged in the two directions intersect, extend to the top of the girder roof truss to install a single-piece corner block, and then the longitudinal direction of the purlin Of the ridge roof where a rafter is erected between How to build. 5. A plurality of triangular roof trusses composed of lower chord materials and upper chord materials are erected in parallel, a purlin is erected between the tops of the respective roof trusses, and the lower chord is parallel to the purlin and the eave girder. A girder roof truss, a corner block, an eaves girder, and a rafter erected on the girder roof truss located at the end in the wife direction, the girder being located in the end in the wife direction. The lower chord of the roof truss and the trapezoidal truss arranged in parallel with the roof truss are supported by the eaves girder arranged in parallel with the purlin, and then the lower chord of the trapezoidal truss and the eaves girder located at right angles to the longitudinal direction of the purlin A plurality of ceiling joists are installed in parallel between
Next, extending from the two eave corners where the eaves girder arranged in the two directions intersect to the top of the girder roof truss, erection of a corner member of one member, and supporting the corner tree with the trapezoidal truss, In addition, a method for constructing a ridge roof in which a rafter is erected between an eave girder perpendicular and parallel to the purlin longitudinal direction and a corner lumber.