JP2908763B2 - Shaped steel and building exterior structures - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shape steel constituting a frame to be constructed, such as a roof of a building, and an exterior structure of the building using the shape steel.

[0002]

2. Description of the Related Art Conventionally, a frame to be constructed, such as a roof,
A purlin material such as a C-shaped steel is arranged as the outermost part of the skeleton on a skeleton reference surface made of a beam material such as an H-shaped steel. Specifically, a plurality of beam members are arranged at an appropriate interval in an inclined shape (for example, an inclination angle θ), and a rectangular purlin member 200 is generally orthogonal to the beam member 1 as shown in FIG. It is arranged as follows.

[0003]

The purlin material 200 comprises:
The lower flange 201 is attached to the upper surface 1a of the inclined beam 1 via a bracket or by welding or the like. However, since the lower flange 201 is attached to the inclined beam 1, a web that rises at a right angle from the lower flange 201 is attached. The portion 202 is perpendicular to the mounting level (the upper surface 1a of the beam 1), that is, inclined with respect to the ground level (ground plane) L. On the other hand, the roof load applied to the purlin material 200 acts on the ground level L substantially vertically. Therefore, as shown in FIG. 4B, the load W applied to the purlin 200 acts in a direction that does not coincide with the extending direction of the web portion 202 of the purlin 200, and the load W and the reaction forces RA and RB cause the web portion 2 to move.
Bending action occurs in an arbitrary section of 02, and bending moment becomes a problem. To increase the resistance moment, the section thickness of the purlin material is increased or the shape itself is increased to improve the cross-sectional performance and the purlin material deforms and falls. It was necessary to take measures against such things as However, measures to improve the cross-sectional performance cause problems such as an increase in cost and an increase in the weight of the purlin itself.
This problem increases the cost of the whole building.

Accordingly, the present invention provides a shaped steel which is practically free from a bending moment and which can obtain a desired cross-sectional performance with a reduced amount of material used as compared with the prior art. It is another object of the present invention to provide an exterior structure of a building using such a shaped steel.

[0005]

Means for Solving the Problems In order to solve the above problems, the inventor of the present invention has proposed a method in which the bending load and the reactive force constituting the bending moment are substantially bent when the respective directions of action overlap substantially linearly. Focusing on the fact that a moment does not act, as described in claim 1, in the section steel which is disposed substantially parallel to the ridge on the inclined frame reference plane and forms the frame , The steel is characterized by comprising a vertical piece substantially vertical to the ground plane and upper and lower horizontal pieces substantially parallel to the skeleton reference plane. Here, the skeleton reference surface refers to a surface of a beam material, RC, or the like, and refers to a surface on which a shaped steel is attached.

According to such a shaped steel, the vertical piece of the shaped steel is substantially vertical with respect to the ground plane regardless of the angle at which the frame reference plane is inclined. The respective directions of action of the reaction force overlap substantially on a straight line, and virtually no bending moment acts. Therefore, when this section steel is used as a purlin material, it can efficiently support the substantially vertical roof load acting on the section steel, reducing the risk of deformation and collapse of the section steel when the maximum load is applied. I can do it. This makes it possible to obtain a desired cross-sectional performance while suppressing the amount of material used as compared with the related art, leading to a reduction in the weight of the shaped steel and a reduction in cost.

In addition, as a construction of an exterior structure of a building using such a shaped steel, as described in claim 2, the shaped steel constituting the skeleton is substantially parallel to the ridge with respect to the inclined skeleton reference plane. In the exterior structure of the building to be attached, the shaped steel is composed of a vertical piece substantially vertical to the ground plane and upper and lower horizontal pieces substantially parallel to the skeleton reference plane, and the lower horizontal piece of the shaped steel is Attach it on the reference frame of the building, and build the exterior of the building on the upper horizontal piece.

[0008] Here, the exterior surface refers to a configuration arranged above the upper horizontal piece of the section steel, and is, for example, a roof material laid with a field material or the like interposed therebetween, a roof material laid directly, or the like.

According to such a shaped steel, since the bending moment does not act substantially as described above, it is possible to efficiently support the load on the exterior surface in a substantially vertical direction acting on the shaped steel as a purlin material, The risk of deformation or collapse of the section steel when the maximum load is applied is reduced. In addition, even if the vertical piece of the shaped steel is substantially vertical to the ground plane, the upper and lower horizontal pieces are substantially parallel to the skeleton reference plane, so the exterior surface is substantially parallel to the skeleton reference plane. Can be built in parallel. That is, by using a shaped steel capable of obtaining a desired cross-sectional performance while suppressing the amount of material used compared to the conventional method, it is possible to reduce the weight of the shaped steel and to reduce the cost, and consequently the cost of the exterior structure of the building. Leads to suppression.

[0010]

1 and 2, an embodiment of a section steel according to the present invention will be described. FIG. 1 is a skeleton side view showing a state in which a section steel according to an embodiment is fixed to a skeleton reference plane, and FIGS. 2A to 2D are front views of a section steel according to another embodiment.

As shown in FIG. 1, a section steel 2 according to the embodiment
Is attached to the beam 1 that is inclined at a predetermined inclination angle θ and whose surface becomes the frame reference surface 1A in an intersecting manner and becomes a purlin material. A vertical piece 21 substantially parallel to the vertical line V, and upper and lower horizontal pieces 22 and 23 substantially parallel to the beam 1.

According to such a configuration, the vertical piece against the load W acting on the section steel 2 substantially vertically downward and the reaction forces RA and RB acting substantially vertically upward (see FIG. 4 (b)). Since the distance from the arbitrary point 21 to the line of action of each force is lost, the bending moment does not actually act.

The section steel 2 is made in the form of a so-called C-section steel, but may be a channel-shaped section steel 2A as shown in FIG. 2 (a), or as shown in FIG. 2 (b). , Z-shaped steel bars 2B, and the upper and lower horizontal pieces 22, 23 may be provided in different directions symmetrically with respect to points. Also, as shown in FIG.
It may be a shaped steel 2C or, as shown in FIG. 2 (d), a shaped steel 2D obtained by joining vertical pieces 21 and 21 of the shaped steel 2 by welding or the like. When these shaped steel members 2A to 2D are attached to the beam member 1 arranged in an inclined manner,
It is composed of a vertical piece 21 substantially parallel to the vertical line V and upper and lower horizontal pieces 22 and 23 substantially parallel to the beam 1, and can provide the same operation and effect as the shaped steel 2.

The beam 1 is arranged at right angles to the ridge of the skeleton and at a predetermined inclination angle θ, and is made of an I-beam or an H-beam. The section steel 2 is fixed to the beam 1 at a substantially right angle via a bracket or by welding. However, the section 2 may be arranged so as to cross the beam 1. The crossing angle is not limited to a right angle. Further, in this embodiment, the skeleton reference surface is made of a beam material. However, the shape steel 2 and the like may be provided with the surface of RC or the like as the skeleton reference surface.

Next, an embodiment of a building exterior structure using the shaped steel 2 of the present invention will be described with reference to FIG. In the embodiment of the exterior structure of the building, the shape of the steel member 2 is set such that the surface of the beam 1 which is inclined at a predetermined inclination angle θ is used as a frame reference plane.
Are mounted at substantially right angles, the lower horizontal piece 23 of the shaped steel 2 is mounted on the upper surface 1 a of the beam 1, and the exterior face 3 of the building is constructed on the upper horizontal piece 22.

The exterior surface 3 is constructed by laying a base plate 4 on the upper horizontal piece 22 of the shaped steel 2 via a fixture (not shown) or the like, laying a felt 5 thereon, and a plurality of hats. .. Are laid at predetermined intervals in the same direction as the beam 1. To these rafters 6, 6 ...
··· fixed, and after laying back-up materials 8, 8 ··· via these suspenders 7, 7 · · · I have.

In such an exterior structure, the shape steel 2
The use of shaped steel, which can achieve the desired cross-sectional performance by reducing the amount of material used compared to the conventional technology, makes it possible to reduce the weight of the shaped steel and reduce the cost, and in turn, The cost of the exterior structure can be reduced.

Although the skeleton reference surface is also made of a beam material in this embodiment, the shape steel 2 or the like may be provided with the surface of RC or the like as the skeleton reference surface. The exterior surface 3
As a configuration, a roof material may be directly laid on the upper horizontal piece 22 of the section steel 2, and other known roof configurations are included.

[0019]

According to the shape steel according to the first aspect of the invention, the vertical piece of the shape steel is substantially vertical with respect to the ground plane regardless of the angle at which the frame reference plane is inclined. The respective directions of action of the roof load and the reaction force constituting the bending moment overlap substantially on a straight line, and the bending moment does not actually act. Therefore, the roof load acting on the section steel in a substantially vertical direction can be efficiently supported, and the risk of deformation and collapse of the section steel when the maximum load is applied is reduced. This makes it possible to obtain a desired cross-sectional performance while suppressing the amount of material used as compared with the related art, leading to a reduction in the weight of the shaped steel and a reduction in cost.

According to the exterior structure of a building according to the second aspect, the shaped steel is composed of a vertical piece substantially vertical to the ground plane and upper and lower horizontal pieces substantially parallel to the frame reference plane. Since the lower cross piece of steel is mounted on the reference frame of the skeleton, and the exterior face of the building is constructed on the upper cross piece, the exterior structure can be constituted by a shaped steel that does not substantially act on bending moment. Therefore, the load on the outer surface in the substantially vertical direction acting on the section steel can be efficiently supported, and the possibility of deformation, fall, etc. of the section steel when the maximum load is applied is reduced. This can reduce the amount of material used to achieve the desired cross-sectional performance compared to the conventional method, leading to a reduction in the weight of the shaped steel and a reduction in cost, and thus to a reduction in the cost of the exterior structure of the building. Connect.

[Brief description of the drawings]

FIG. 1 is a side view of a skeleton showing a state in which a shaped steel according to an embodiment is fixed to a beam member,

FIGS. 2A to 2D are front views of a section steel according to another embodiment,

FIG. 3 is a perspective view of an exterior structure of the building according to the embodiment;

4A is a front view of a conventional section steel fixed to a beam, and FIG. 4B is an operation view thereof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Beam material 1A Frame reference plane 2, 2A, 2B, 2C, 2D Shaped steel 21 Vertical piece 22 Upper horizontal piece 23 Lower horizontal piece 3 Exterior surface 4 Field plate 5 Felt 6 Rafter 7 Hanger 8 Backup material 9 Side roofing roof L Ground plane V Vertical line

Claims (2)

(57) [Claims] 1. A shaped steel which is disposed substantially in parallel with a ridge on an inclined frame reference plane and forms a frame , wherein the shaped steel is a vertical piece substantially perpendicular to a ground plane. And the upper and lower horizontal pieces that are substantially parallel to the frame reference plane. 2. The skeleton is formed with respect to an inclined skeleton reference plane .
In the exterior structure of a building in which a shaped steel is attached substantially parallel to a ridge, the shaped steel is composed of a vertical piece substantially perpendicular to the ground plane and upper and lower horizontal pieces substantially parallel to the frame reference plane. An exterior structure for a building, wherein the lower cross piece of the shaped steel is mounted on a reference frame of a skeleton, and an exterior surface of the building is constructed on the upper cross piece.