JP5176195B2 - Building facade - Google Patents

Description

  The present invention relates to a building facade capable of adjusting the appearance design of a building and improving seismic performance.

In recent years, facades have been used not only for building exterior designs but also for seismic reinforcement. For example, as shown in Patent Document 1 of the present applicant, a control member additional frame 3 in which a damping member is added to the outer surface of a building is arranged, and the control member additional frame is connected to the structural frame 1 of the building. An outer wall constituted by the louver 8 and the glass surface 10 is constructed with 3 as a support frame. A buckling restraint brace and various dampers are used for the damping member additional frame 3.
JP 2006-21494 A

  In the above-mentioned Patent Document 1, a buckling restrained brace is used as a damping member added frame and its arrangement is formed as an X type, but there are many cases where design is disliked. The X-type is robust but does not look good. Moreover, in the example of this patent document 1, it becomes the structure of the at least 2 layer by which the louver 8 and the glass surface 9 are distribute | arranged to the outer side of the damping member addition frame 3, and also has the problem which protrudes outside the building. .

  Accordingly, the present invention provides a building facade having a seismic reinforcement capability with a new design by improving the appearance design and combining the buckling-restrained brace, which is a damping member, with the function of a louver.

In order to achieve the above object, a building facade according to the present invention has a buckling-restrained brace arranged in series on a surface of a building and a group of buckling-restrained braces connected directly or indirectly to a column or a beam. the group provided with multiple rows in the same direction, as well as distribution of one or more of the plurality of louvers between said buckling restrained brace group in the same direction in addition the seat buckling restrained brace group, the buckling restrained brace And the louver have the same outer shape (Claim 1).

  Thereby, since the buckling-restraining brace group is arranged in series and provided in multiple rows in the same direction, the earthquake resistance can be improved.

In other words, the buckling-restrained brace is resistant not only to compressive load but also to tensile load, and when large inter-layer deformation occurs, the brace core material plastically deforms to absorb energy and shake the building as a structure. Can be reduced. In addition, the buckling-restrained brace group and the louver are in the same direction, and the appearance design appears so that parallel lines flow from one to the other, which represents a very good design. Furthermore, the thickness of the buckling restraint brace and the louver is sufficient, and the thickness is reduced. The buckling restraint brace and the louver preferably have the same outer shape. This provides design uniformity. That is, the cross section may be square or round.

  The buckling-restrained brace group and the louver are provided so as to be inclined with respect to the building (Claim 2). Thereby, control of solar radiation becomes easy. In summer, the inclined installation has a higher heat shielding effect in all directions (east-west and south) than the horizontal installation. In winter, a warming effect is obtained. It is especially seen at 135 degrees southeast (only in the morning) and 45 degrees southwest. In the intermediate period, the heat shielding effect is higher than horizontal installation in all directions. The inclination angle is preferably in the range of 20 degrees to 160 degrees.

  In order to indirectly connect to the column or beam of the building, the buckling-restrained brace group and the louver are attached to the steel pipe after the steel pipe is connected to the column or beam. This facilitates attachment of the buckling restrained brace group and the louver. This is particularly advantageous when used for building reinforcement.

The buckling restrained brace and louver are connected to a bracket provided on a column or a beam or a bracket provided on a steel pipe (claims 5 and 6 ). By attaching outer shells that enclose at least the connection parts at both ends of the buckling restraint brace and the bracket (Claim 7 ), the connection part of the buckling restraint brace and the connection part of the bracket can not be shown . The outer shell may be extended to cover the entire buckling restrained brace group. Thereby, not only appearance can be improved, but also adhesion of dust and dust can be prevented, dirt on the exterior can be prevented, and durability of the joint portion can be improved.

As described above, according to the present invention, since the buckling-restrained braces groups are provided and multiple rows juxtaposed in series, it is possible to improve the seismic performance of the building by buckling-restrained braces. In addition, louvers are arranged between the buckling-restrained brace groups, and the appearance design is expressed such that parallel lines flow from one side to the other, indicating excellent design. Furthermore, the thickness of the facade can be reduced. Note that the required number of buckling-restrained brace groups may be provided, and other than that, a louver may be provided, and the number of buckling-restrained braces can be appropriately used in accordance with the required seismic characteristics as well as weight reduction. .

Further, the buckling restraint brace and the louver have substantially the same outer shape such as a square or round cross section, so that design uniformity can be obtained.

Since the buckling restraint brace and the louver are installed at an inclination with respect to the building, it is possible to control solar radiation. That is, a heat shielding effect is obtained in summer and a heat retaining effect is obtained in winter (claims 2 and 3 ).

  Embodiments of the present invention will be described below with reference to the drawings.

  1 to 4 show a first embodiment of the present invention, in which a surface of a building 2 is covered with a building facade 1. This building 2 has, for example, 10 stories, and a structure composed of columns 4 and beams 15 is made of a steel structure.

  The building facade 1 includes a buckling-restrained brace group 3 'in which buckling-restraining braces 3 are arranged in series, and a louver 4 arranged in parallel therebetween, and the buckling-restraining brace group 3' As shown in FIG. 2 in an enlarged manner, a plurality of buckling-restraining braces 3 are arranged in series, and are visually observed as if they were one member.

  The buckling-restrained brace 3 used here has a known structure in which concrete is arranged around the brace core material so as to withstand the compressive load. The production thereof is, for example, a structure as disclosed in Japanese Patent No. 3663491. Is adopted. An example of this will be described with reference to FIG. 5. On both sides of a brace core material 10 having connecting portions 10 a and 10 b at both ends, a groove steel 12 containing concrete 11 is arranged, and then both groove steels 12 are connected to each other. Manufactured by welding.

  The total length of the buckling restrained brace 3 is about 1.4 times the height between the floors of the building when the inclination is 45 degrees. The buckling restraint brace 3 described so far has been attached to the beam for each level of the building, but it goes without saying that one level may be skipped and connected every two levels.

The above-described buckling restrained brace 3 is housed in a concave portion 16 of a beam 15 which is a building structure, and is connected to a bracket 18 projecting from a steel pipe 17 connected thereto, and connecting portions 10a and 10b at both ends thereof are bolted. It is combined with. An outer shell 19 is provided to prevent the connection portions 10a and 10b and the bracket 18 from being visually observed. The outer shell 19 may extend along the longitudinal direction so as to cover the entire buckling restrained brace group 3 ′. By doing so, it becomes convenient for unifying the shape, color and the like with the louver 4 described below, and it prevents dust and dust from adhering, prevents dirt on the exterior, and contributes to improving the durability of the joint.

  The louvers 4 are arranged side by side along the buckling-restrained brace group 3 ′ and are made of resin or the like, and the cross section has the same shape and the same color as the buckling-restrained brace 3, so as to have uniformity. Then, at a proper position of the louver 4, the steel pipe 17 is bolted to a bracket 18 projecting. The louvers 4 are provided in a row between the buckling-restrained brace groups 3 '. However, a plurality of rows may be used.

The buckling restrained brace group 3 'and the louver 4 are inclinedly attached to the building, and preferably 45 degrees or 135 degrees. As a result of the verification at two inclination angles, in the summer, the inclination installation has a higher heat shielding effect in all directions than the horizontal louver. In winter, the thermal insulation effect was obtained especially at 135 degrees southeast (in the morning) and 45 degrees southwest. Furthermore, in the intermediate period, the heat shielding effect is higher than the horizontal louver in all directions. However, when the inclination is 45 degrees, the heat shielding effect cannot be expected so much on the southwest and west sides. In other directions, a heat shielding effect was obtained.

  In the first embodiment, the steel pipe 17 attached to the beam 15 is fixed, and the buckling restrained brace group 3 ′ and the louver 4 are attached to the bracket 18 projecting on the web surface. A bracket may be provided in advance on the beam and attached thereto, or a bracket may be provided in advance on the column and attached thereto.

  When the building is subjected to earthquake-proof reinforcement using the facade 1, in FIG. 2 and FIG. 3, the steel pipe 17 is passed in the horizontal direction to form a reinforcing beam. However, in both FIGS. 6 and 7, the steel pipe 20 is passed through in the vertical direction to form a reinforcing column. In this case, in FIG. 6, a bracket 18 is provided on the beam 15, and the connection portions 10 a and 10 b of the buckling restrained brace 3 are bolted to the bracket 18. In contrast, in FIG. 7, a bracket 18 is provided on the steel pipe 20, and the connection portions 10 a and 10 b of the buckling restrained brace 3 are bolted to the bracket 18.

It is the front view which showed the Example of this invention and arranged the building facade on the surface of the building. It is a partial enlarged view same as the above. It is a longitudinal cross-sectional view of the state of FIG. It is an expansion perspective view of the state where the buckling restraint brace group and the louver were connected to the steel pipe. It is a disassembled perspective view of a buckling restraint brace. FIG. 5 is a partially enlarged view of a column-through type in which a steel pipe of another embodiment is passed through in a vertical direction to reinforce a column, and a buckling-restrained brace group and a louver are connected to the beam. FIG. 5 is a partially enlarged view of a column-through type in which a steel pipe of another embodiment is passed in a vertical direction to reinforce a column, and a buckling-restrained brace group and a louver are connected to the steel pipe.

DESCRIPTION OF SYMBOLS 1 Building facade 2 Building 3 Buckling restraint brace 3 'Buckling restraint brace group 4 Louvers 10a and 10B Connection part 11 Concrete 12 Channel steel 14 Column 15 Beam 16 Recess 17 Steel pipe
18 Bracket 19 Outer shell 20 Steel pipe

Claims (7)

On the surface of the building, a series of buckling-restrained braces connected directly or indirectly to a column or beam are arranged in series, and the buckling-restrained braces are arranged in multiple rows in the same direction.
While distributing the one or more plurality of louvers between said buckling restrained brace group in the same direction in addition the seat Buckling restrained brace group, and the louver and the buckling restraint braces, the shape of the outline Building facade characterized by having the same shape .   The building facade according to claim 1, wherein the buckling-restrained brace group and the louver are inclined with respect to the building.   The building facade according to claim 2, wherein the inclination angle is in the range of 20 to 160 degrees.   The indirect connection to the column or beam is characterized in that a steel pipe is connected to a column or beam of a building and a buckling restrained brace group and a louver are attached to the steel pipe. Or the facade for buildings of 3 description.   The building facade according to claim 1, wherein the buckling restrained brace and the louver are connected to a bracket provided on the column or beam. The building facade according to claim 1 or 4 , wherein the buckling-restraining brace and the louver are connected to a bracket provided on a steel pipe provided on a column or beam of the building. Claim 5 or 6, wherein the building for facades, characterized in that attaching the outer shell such that the both ends of the connection portion of the buckling restraint braces and the bracket are at least enveloped.

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