JP7300355B2 - Buildings with openings - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a building having openings, and more particularly to a building in which a plurality of openings are linearly arranged adjacent to each other along one outer wall surface.

Conventionally, as a Rahmen structure using a steel frame brace together, there has been proposed a joint structure in which a brace gusset plate is provided so that the central axis of the brace passes through the joint center of the column and the beam (Patent Document 1).

This joint structure has been adopted in many buildings as the "Toda-type RCS construction method (TO-RCS construction method)," which ensures high earthquake resistance performance at low cost.

JP 2010-242390 A

However, in the invention according to Patent Document 1, it is necessary to arrange the braces in a well-balanced manner in consideration of the eccentricity of the entire building.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a building capable of improving the degree of freedom in arranging openings while ensuring high earthquake resistance performance at a low cost.

The present invention has been made to solve at least part of the above problems, and can be implemented as the following aspects or application examples.

[1] One aspect of a building having an opening according to the present invention is
A plurality of openings linearly arranged so as to be adjacent along one outer wall surface of a building, a plurality of first pillars arranged between the adjacent openings, and the openings are arranged. A plurality of second pillars arranged along other outer wall surfaces on the same floor as the first floor, braces arranged between the second pillars, and a third pillar joined to the upper end of the first pillar. including
The first pillar is a flat reinforced concrete pillar having a rectangular cross section and a long side in the direction in which the openings are arranged,
the third pillar has a substantially square cross section,
The first pillar has first main bars arranged at four corners of a cross section and second main bars arranged inside the first main bars,
The second main reinforcing bars are characterized by extending into the interior of the third pillar and arranged at four corners of the cross section of the third pillar .

According to one aspect of the building, while ensuring seismic performance by arranging a flat first pillar on one outer wall surface on which a plurality of openings are arranged, the degree of freedom in arranging the openings on the outer wall surface can be improved. Further, according to one aspect of the building, the other outer wall surface can secure high earthquake resistance performance at low cost by combining the second pillar and the brace. According to one aspect of the building, the flat first column and the substantially square third column are provided with a common main reinforcement, thereby clarifying the stress transmission at the joint portion between the first column and the third column. It is possible to secure the bearing strength.

[2] In one aspect of the building,
A track berth may be provided adjacent to the one outer wall surface provided with the opening.

Usually, a plurality of track berths are often arranged side by side along one outer wall surface. On the other hand, if a brace is used on one outer wall surface, there will be a span in which an opening cannot be provided, resulting in a span that cannot be used as a track berth. On the other hand, according to one aspect of the building, by adopting a flat first column and eliminating the brace structure surface, the span in which the opening and the track berth are not provided can be reduced.

[3] In one aspect of the building,
The first pillar may extend from the first floor to the second floor of the building.

According to one aspect of the building, even in a multi-story building, the rigidity balance of the building can be adjusted by extending the first pillar from the first floor to the second floor.

According to the building according to the present invention, it is possible to improve the degree of freedom in arranging the openings in the outer wall surface while ensuring high earthquake resistance performance at low cost.

It is a 1st-floor beam plan which shows typically the building which concerns on one Embodiment. 1 is a front view of a building according to an embodiment; FIG. It is a front view which shows the joining structure of a 1st column and a 3rd column. FIG. 4 is a cross-sectional view taken along the line AA in FIG. 3;

Preferred embodiments of the present invention will be described in detail below with reference to the drawings. It should be noted that the embodiments described below do not unduly limit the scope of the invention described in the claims. Moreover, not all the configurations described below are essential constituent elements of the present invention.

One aspect of a building according to an embodiment of the present invention is a plurality of openings linearly arranged so as to be adjacent along one outer wall surface of the building and arranged between the adjacent openings. a plurality of first pillars, a plurality of second pillars arranged along other exterior wall surfaces on the same floor as the floor where the opening is arranged, and a brace arranged between the second pillars; , wherein the first pillar is a flat reinforced concrete pillar having a rectangular cross section and a long side in a direction in which the openings are arranged.

1. Building A building 1 according to an embodiment will be described in detail with reference to FIGS. 1 and 2. FIG. FIG. 1 is a first-floor beam plan that schematically shows a building 1 according to one embodiment, and FIG. 2 is a framework diagram of the building 1 according to one embodiment viewed from the front. 1 and 2, a part of the left side of the building 1 viewed from the front is omitted. The openings 3a to 3d in FIG. 1 are shaded areas.

As shown in FIG. 1, the building 1 has a substantially rectangular outer shape in plan view, and has three straight outer wall surfaces 2a to 2c shown and one outer wall surface not shown. The outer shape of the building 1 is not limited to a rectangular shape, and can be designed according to the shape of the land, the use of the building 1, and the like.

The building 1 includes a plurality of openings 3a-3d, a plurality of first columns 10, a plurality of second columns 20, and braces 50. As shown in FIG.

The plurality of openings 3a to 3d are linearly arranged along one outer wall surface 2a of the building 1 so as to be adjacent to each other. The outer wall surface 2a is an outer wall surface on the front side of the building 1, for example. The openings 3a-3d may be provided with openable and closable shutters (not shown). By opening the shutters, the interior and exterior of the building 1 communicate with each other through the openings 3a to 3d.

The building 1 is, for example, a distribution center, and a truck berth 5 is provided adjacent to the outer wall surface 2a on the front side. The truck berth 5 is a space for trucks within the facility to load and unload cargo between the trucks and the distribution center. The building 1 is not limited to a distribution center, but may be, for example, a warehouse or a factory that requires continuous openings 3a to 3d.

A truck that has entered the truck berth 5 can contact one of the openings 3a to 3d of the outer wall surface 2a to load and unload cargo. The building 1 has continuous openings 3a to 3d with the first pillar 10 interposed therebetween, so that the site in front of the outer wall surface 2a can be efficiently used as a track burst 5.

A plurality of first pillars 10 are arranged between adjacent openings 3a to 3d. The first pillar 10 is a flat reinforced concrete pillar having a rectangular cross section and a long side 11 in the direction in which the openings 3a to 3d are arranged. The direction in which the openings 3a to 3d are arranged is the direction along the outer wall surface 2a. Therefore, the width dimension of the cross section of the first pillar 10 is larger than the thickness dimension. Assuming that the thickness dimension of the first column 10 is 1, the width dimension is preferably 1.6 to 2.0.

No braces are arranged between adjacent openings 3a to 3d along the outer wall surface 2a. If a plurality of openings 3a to 3d are provided on the outer wall surface 2a without simply providing braces, the rigidity of the outer wall surface 2a is reduced. The rigidity of the wall surface 2a is improved, and it is possible to withstand horizontal earthquake shaking (flat torsion of the building 1) along the outer wall surface 2a. Moreover, since there is no brace between the openings 3a to 3d, the span in which the openings 3a to 3d and the track berth 5 are not provided in the outer wall surface 2a can be reduced. By arranging the flat first pillar 10 without using braces in this way, it is possible to improve the degree of freedom in arranging the openings 3a to 3d while ensuring the seismic resistance of the outer wall surface 2a.

A plurality of second pillars 20 are arranged along other outer wall surfaces 2b and 2c on the same floor as the floor (first floor in this embodiment) where the openings 3a to 3d are arranged. The second pillar 20 is made of reinforced concrete with a substantially square cross section. The second pillar 20 may have the same cross-sectional thickness dimension as the first pillar 10 and a smaller width dimension than the first pillar 10 .

On the ground floor, braces 50 are placed between the second columns 20 . The braces 50 are obliquely attached between the second pillars 20 adjacent to each other to improve seismic performance. As a material for the brace 50, a known brace material such as a steel frame or a circular steel pipe can be used. In the building 1, four braces 50 are attached to the outer wall surface 2b of the first floor, and three braces 50 are attached to a part of the outer wall surface 2c of the first floor. The outer wall surfaces 2b and 2c of the building 1 are the second pillars 20
and the brace 50, as disclosed in Patent Document 1, it is possible to ensure high earthquake resistance performance at low cost. In addition, the building 1 may further have a plurality of braces 50 arranged on the inner wall other than the outer wall.

A steel beam 61 is installed between the first column 10 and the adjacent first column 10 in the direction along the outer wall surface 2a, and the first column 10 and the adjacent second column 20 in the direction along the outer wall surface 2b. A steel beam 62 is installed between them. The steel beams 61 are also installed between the second pillars 20 and the adjacent second pillars 20 in the direction along the outer wall surface 2b. The steel beams 62 are also installed between the second pillars 20 and the adjacent second pillars 20 in the direction along the outer wall surface 2c.

As shown in FIG. 2, the building 1 has a first pillar 10 and a second pillar 20 erected on a plurality of foundations 6, respectively. The building 1 has multiple floors, for example, four floors from the first floor to the fourth floor, and the first pillar 10 can extend from the first floor to the second floor of the building 1 . Even if the building 1 has multiple floors, the rigidity balance of the building 1 can be adjusted by extending the first pillar 10 from the first floor to the second floor.

The building 1 may have a plurality of third pillars 30 joined to the upper ends of the first pillars 10 on the third floor. The third pillar 30 has a substantially square cross section. The width dimension of the third pillar 30 in the direction in which the openings 3 a to 3 d are arranged is smaller than the width dimension of the first pillar 10 . Also, the thickness dimension of the third pillar 30 may be the same as the thickness dimension of the first pillar 10 .

The building 1 further comprises a brace 50 between the first pillars 10 on the second floor and a brace 50 between the third pillars 30 on the third floor. By providing the braces 50 on the second and third floors, it is possible to match the seismic performance of the second and third floors on the outer wall surface 2a.

The building 1 may have a plurality of fourth pillars 40 on the fourth floor that are joined to the upper ends of the third pillars 30 and extend upward. The fourth pillar 40 may be a steel frame, such as H-beam steel.

2. Joint Portion The structure of the joint portion 31 between the first column 10 and the second column 20 will be described with reference to FIGS. 3 and 4. FIG. 3 is a front view showing the joint structure between the first column 10 and the third column 30, and FIG. 4 is a cross-sectional view taken along line AA in FIG. In FIG. 3, the outlines of the 3rd floor slab and the 3rd pillar 30 are indicated by a dashed line. In FIG. 4, the outer shape of the third pillar 30 is indicated by a dashed line.

As shown in FIGS. 3 and 4, the joint portion 31 is a portion where the first column 10 and the second column 20 are joined, and a portion where the first column 10 and the steel beams 61 and 62 are joined.

The first column 10 is made of reinforced concrete, and has a plurality of first main reinforcing bars 13 arranged at the four corners of the cross section and a plurality of second main reinforcing bars 33 arranged inside the first main reinforcing bars 13. The first main reinforcement 13 and the second main reinforcement 33 are arranged to extend vertically along the first pillar 10 . The first column 10 includes a plurality of ties 14 around the first main reinforcement 13 and the second main reinforcement 33 .

The second main reinforcing bars 33 extend from the upper end of the first column 10 to the inside of the third column 30 and are arranged at the four corners of the cross section of the third column 30 .

In the building 1, the flat first column 10 and the substantially square third column 30 are provided with a common second main reinforcing bar 33, so that stress transmission at the joint 31 between the first column 10 and the third column 30 is reduced. It can be clarified and the bearing strength can be ensured.

The steel beam 61 joins and intersects with the steel beam 62 near the upper end of the first column 10 . steel beams 61,
62 can use a known beam steel material, for example, H-section steel. The surroundings of the steel beams 61 and 62 are surrounded by a closing plate 63, and a band plate 64 is wound around the lower surfaces of the steel beams 61 and 62. - 特許庁Note that the band plate 64 may not necessarily be provided.

The first main reinforcement 13 extends upward beyond the steel beams 61 and 62 and is fixed at its upper end to a mouth-shaped plate 65 having an opening in the center and placed above the steel beams 61 and 62 with nuts. The second main reinforcement 33 penetrates the mouth-shaped plate 65 .

The joint portion 31 is formed by placing concrete inside the formwork for the first and third columns 10 and 30 (not shown), the formwork for the third floor slab (not shown), the closing plate 63 and the band plate 64. By doing so, the first column 10, the third column 30, and the steel beams 61, 62 are integrally constructed.

The present invention is not limited to the above-described embodiments, and various modifications are possible. For example, the present invention includes configurations that are substantially the same as the configurations described in the embodiments (for example, configurations that have the same function, method, and result, or configurations that have the same purpose and effect). Moreover, the present invention includes configurations in which non-essential portions of the configurations described in the embodiments are replaced. In addition, the present invention includes a configuration that achieves the same effects or achieves the same purpose as the configurations described in the embodiments. In addition, the present invention includes configurations obtained by adding known techniques to the configurations described in the embodiments.

DESCRIPTION OF SYMBOLS 1... Building, 2a-2c... Outer wall surface, 3a-3d... Opening, 5... Track berth, 6... Foundation, 10... First pillar, 11... Long side, 12... Short side, 13... First main reinforcement, 14... Tie bar 20... Second column 30... Third column 31... Joint part 33... Second main reinforcing bar 40... Fourth column 50... Brace 61, 62... Steel beam 63... Closing plate, 64... Band plate, 65... Mouth plate

Claims (3)

A plurality of openings linearly arranged so as to be adjacent along one outer wall surface of a building, a plurality of first pillars arranged between the adjacent openings, and the openings are arranged. A plurality of second pillars arranged along other outer wall surfaces on the same floor as the first floor, braces arranged between the second pillars, and a third pillar joined to the upper end of the first pillar. including
The first pillar is a flat reinforced concrete pillar having a rectangular cross section and a long side in the direction in which the openings are arranged,
the third pillar has a substantially square cross section,
The first pillar has first main bars arranged at four corners of a cross section and second main bars arranged inside the first main bars,
The building having an opening, wherein the second main reinforcement extends to the inside of the third pillar and is arranged at four corners of the cross section of the third pillar . In claim 1,
A building having an opening, characterized in that a track berth is provided adjacent to the one outer wall surface provided with the opening. In claim 1 or 2,
A building having an opening, wherein the first pillar extends from the first floor to the second floor of the building.

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