JP3120246B2 - Body structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a structural body having a roof over a roof for lighting, ventilation, equipment space, and the like.

[0002]

2. Description of the Related Art Conventionally, in a long-span structure such as a steel frame factory, an opening for lighting and ventilation is formed in a part of a roof, and a roof over the opening is installed on the opening. Often. In addition, this rooftop is often used as equipment space.

[0003]

However, at present, the above rooftops are exclusively used for daylighting, ventilation, or equipment space, and there has been no idea of actively using them structurally. . On the other hand, if the span length is 20
In a long span structure having a length of about one meter, the cross section of a roof beam supporting the entire roof is often determined on the basis of a snow load. Therefore, the structure design had to be extremely inefficient.

[0004] In such a case, it is preferable that the roof beams of the long-span structure have an economical cross-section if the over-roof can be utilized positively structurally, so that an efficient structural design can be achieved.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has as its object to provide a frame structure capable of obtaining an economical cross section of a roof beam by actively utilizing a rooftop structurally. With the goal.

[0006]

SUMMARY OF THE INVENTION Accordingly, the present invention relates to a structure in which a roof beam is erected between pillars and a roof is provided on the roof for lighting or ventilation. Inside the roof, a bundling material that is fixed vertically on the column cap , and radially downward from the top of this bundling material
Provided with their tips at the ends of the roof beams respectively
The ends of the roof beams are suspended from the bundle by being connected.
Arranging a plurality of diagonal members for supporting is a solution to the above-mentioned problem.

[0007]

In the structure of the present invention, a part of the vertical load acting on the roof beam is transmitted to and supported by the pillars through the diagonal members and the bundling members arranged inside the roof roof. Can be effectively used structurally, and an economical cross section of the roof beam can be realized.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 shows a framing diagram of a frame structure according to the present invention. As shown in FIG. 1, a pillar 1 on which a roof beam 2 is erected is erected on the ground G. As shown in the roof plan view of FIG. 2, the columns 1 are arranged in such a manner that the span length between the columns 1 and 1 adjacent in the X and Y directions is the same. As shown in FIG. 2, lattice-shaped small beams 3 are bridged between roof beams 2... Arranged on four sides with four columns 1. Further, a roof (not shown) composed of a folded plate, an ALC plate, or the like is mounted on the entire roof beam 2. For example, an opening for lighting is provided along the roof beams 2 along the roof beams 2 extending in the X direction, and the roof is covered on the roof so as to cover the openings. A roof 4 is provided along the roof beam 2 to form a lighting window, a ventilation opening, or to secure a facility space (dotted lines in FIGS. 1 and 2).

Inside the roof 4, a bundle 10 and a diagonal member 11 are arranged near the column cap of each column 1. The former bundle member 10 is arranged on the column cap 1a of each column 1 so as to be fixed vertically. The latter diagonal member 11 is a member for reinforcingly supporting each roof beam 2... Extending in the X direction and the Y direction from the column capital 1 a of the column 1.
It is arranged between the upper end of the side surface of each bundle 10 and the upper surface of the roof beam 2. From these bundles 10, the X direction and the Y direction
One end of each of the diagonal members 11 arranged to extend in the direction is connected to the upper end of the side surface of the bundle 10 and the other end is connected to the middle of the upper surface of the roof beam 2. 1 and 2
As shown in the figure, the above-mentioned diagonal material 11 is inclined from the top of the bundle material 10.
Are provided radially downward so that their tips
Each is connected to the end of the roof beam 2 ...
The ends of the roof beams 2 are bundled with diagonal members 11
It is suspended from 10. Accordingly
, And these bundle members 10 and diagonal members 11 support the roof 4.
Not only function, but also support the entire roof surface
Function as a reinforcement structure to reinforce the roof beam 2
It has something to have.

In the above-described structure, the weight of the roof 4 is transmitted to and supported by the pillar 1 via the bundle 10. In addition, a part of the load (finish load, loaded load, snow load, etc.) acting on the roof beam 2 is transmitted to and supported by the column 1 through the diagonal members 11 and the bundle members 10 that support the roof beam 2 in a reinforcing manner. It has become. Further, wind load and seismic force acting on the roof 4 are transmitted to and supported by the diagonal members 11.

According to this embodiment, the following effects can be obtained.

(1) A bundle 10 and a bundle 10 arranged inside the roof 4
Further, since the end of the roof beam 2 is suspended and supported by the diagonal members 11 and is supported in a reinforcing manner together with the vertical load applied thereto, the roof beam 2 can have an economical cross section. This makes it possible to reduce the weight of the roof beam 2 and to reduce construction costs by reducing the amount of steel frames used.

(2) The weight of the roof 4 can be borne by the pillars 1 via the bundle 10 and the wind load and seismic force acting on the roof 4 can be borne by the diagonal members 11. The cross section of the beam 2 can be made more economical.

(3) Since the roof beam 2 can be made to have an economical cross section, even a long span roof beam which normally requires an assembling beam, for example, a single H-section steel material can be sufficiently used, and The production cost of the steel frame used for the beam 2 and the labor saving of on-site construction can be achieved.

(4) Even if the spans in the X and Y directions are not the same, the diagonal members 11 are
If the roof beams 2 in the direction and in the Y direction have substantially the same cross section, the cross section structure is advantageous for setting the floor height, and an economical structure can be obtained.

FIG. 3 (a) shows a bending moment diagram when a vertical load is applied to the frame structure of the present invention. The bending moment diagram of FIG. 3A is an example in which the span length in both the X direction and the Y direction is 18 meters.
It can be seen that the roof beam has an economical cross section as compared with the conventional case shown in FIG. According to the verification by the present applicants, the amount of steel frame used for the roof beam 2 is 69% of the conventional value.
It was found to be reduced to a degree.

[0018]

As described above, according to the present invention,
A bundle is provided on the capital of the pillar that supports the roof, and the bundle
The edge of the roof beam is made up of multiple diagonals radiating from the top
Because of the structure for suspending and supporting the part, the overtop roof can be effectively used structurally, and a more economical cross section of the roof beam can be obtained. As a result, the body structure can be designed more efficiently.

[Brief description of the drawings]

FIG. 1 is a frame diagram of a frame showing one embodiment of the present invention.

FIG. 2 is a roof plan of the same body.

FIG. 3 is a bending moment diagram of the same body when a vertical load is applied.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 pillar 2 roof beam 4 roof roof 10 bundle material 11 diagonal material.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E04B 1/342 E04B 7/18

Claims (2)

(57) [Claims] In a structure in which a roof beam is erected between pillars and a roof is provided on the roof for daylighting, ventilation, etc., the top of the pillar is provided inside the roof roof. The bundle is vertically fixed on top of the
Are provided radially downward and their tips are
The roof beam is connected to each end of the roof beam.
And a plurality of diagonal members for suspending and supporting the end of the bundle from the bundle material
Body structure characterized by being done . 2. The frame structure according to claim 1, wherein the distance between the columns adjacent in the direction orthogonal to each other has the same span length.