JPH07259179A - Support structure of balcony - Google Patents

Abstract

PURPOSE:To prevent the occurrence of the twist of a girder of a building body supporting a balcony without exerting a shearing bending moment on the girder of a building body. CONSTITUTION:In the support structure of a balcony 30 protruding externally from a building body 20, a balcony support beam 32 crossing an outer wall 21 of the building body 20 approximately at right angles is built as a balcony unit 31. The balcony support beam 32 is extended from a body 33 of the balcony unit to the interior of the building body 20. The intermediate of the balcony support beam 32 is placed on a large beam 22 of the building body 20 near an outer wall 21 and an extension end 34 of the balcony support beam 32 is securedly placed on a different large beam 32 arranged at the large beam 22 at a distance therefrom.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a balcony support structure, and more particularly to a balcony support structure suitable as a means for externally attaching a balcony protruding from a building to the main body of a building such as a steel-framed housing complex.

[0002]

2. Description of the Related Art As shown in FIG. 9, when a balcony 1 is provided so as to project outside a dwelling unit 2, for example, in a reinforced concrete building, as shown in FIG. 10, a floor slab 3 of the balcony 1 and a floor of the dwelling unit 2 are provided. In many cases, the slab 4 and the dwelling beam 5 are integrally formed of concrete. In the case of a reinforced concrete building, the balcony 1 is often formed integrally with the dwelling unit 2 side in this way due to the fact that concrete is cast on site, but in the case of a steel-framed unit building, the balcony is not included. The above construction method is not used because it is manufactured as a unit and assembled to the unit on the dwelling unit side locally. A unit building is a building system in which one building is divided into several units in advance and factory-produced, and these are constructed / assembled at a construction site. First, a building unit (room unit) that constitutes a room part of the building Are installed on the foundation and connected to each other, and then the balcony unit is connected next to the building unit.

[0003] Conventionally, for example, as a supporting structure of a balcony in a steel-framed building, one disclosed in Japanese Patent Publication No. 5-44493 is known. In this structure, as shown in FIG. 11, floor beams 11 of the balcony 10 are connected to the beams 7 and columns 8 on the dwelling unit side by using brackets 9 and the like, whereby the balcony 10 is cantilevered.

[0004]

However, since the conventional supporting structure supports the balcony 10 in a cantilever manner, when the balcony 10 is heavy, an excessive shear bending moment acts on the beam 7 on the dwelling unit side, which causes the beam 7 to move. Twisting (rolling) may occur. Therefore, it has been necessary to take measures such as providing sufficient reinforcement against twisting or significantly increasing the strength of the beam 7 on the dwelling unit side. In addition, there is a problem in that the degree of freedom in the design plan is reduced due to restrictions on the installation position and size of the balcony due to the relationship against excessive torsional force.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a balcony support structure capable of reducing the load on the building body, particularly on the beams.

[0006]

In order to solve the above-mentioned problems, the invention according to claim 1 is a balcony support structure projecting to the outside of a building body, wherein the balcony support is substantially orthogonal to the outer wall of the building body. A beam is provided on the balcony, the balcony support beam is extended from the balcony to the inside of the building body, and the middle portion of the balcony support beam is placed on the girder of the building body close to the outer wall, and the balcony support is provided. The extended end of the beam is supported by the structural material of the building body. In the present invention, the balcony is a concept including an outer corridor externally attached to the building body.

The invention as set forth in claim 2 is characterized in that the building body is composed of a building unit, and the balcony is composed of a balcony unit having a balcony support beam. In the present invention, the balcony unit is a concept including an outer corridor unit externally attached to the building body. Further, the invention according to claim 3 is characterized in that the extended end of the balcony support beam is fixed to another beam of the building body which is arranged at a distance from the large beam of the building body adjacent to the outer wall. Furthermore, the invention according to claim 4 is characterized in that the load of the floor slab of the building body is applied downward to the extended end of the balcony support beam.

[0008]

According to the first aspect of the present invention, since the middle portion of the balcony supporting beam is placed on the girder of the building main body, a downward load acts on the girder, but no shear bending moment acts on the girder.

According to the second aspect of the present invention, the building unit and the balcony can be manufactured separately and then connected locally. At that time, since the balcony support beam is previously integrated with the balcony unit, if the balcony support beam is placed on the girder of the assembled building unit, the assembling is completed.

Further, in the invention according to claim 3, since the extended end of the balcony support beam is fixed to another beam of the building main body,
Support is stable. Furthermore, in the invention according to claim 4, since the load of the floor slab is applied downward to the extension end of the balcony support beam, the upward force acting on the extension end is offset.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. First Embodiment FIG. 1 is a side sectional view showing a balcony support structure according to a first embodiment of the present invention, and FIG. 2 is a principle view of the balcony support structure. In the figure, reference numeral 20 indicates a building body such as an apartment house in which a plurality of dwelling units are assembled into one building, and reference numeral 30 indicates a balcony which is an external body of the building body 20. In this balcony support structure, a balcony support beam 32 that is substantially orthogonal to the outer wall 21 of the building body 20 is provided in advance in the balcony unit 31, and the balcony support beam 32 is moved from the body portion 33 of the balcony unit 31 to the inside of the building body 20. And the middle portion of the balcony support beam 32 is mounted and fixed on the girder 22 of the building body 20 adjacent to the outer wall 21, and the extension end 34 of the balcony support beam 32 is placed inside the building body 20. It is placed on the upper surface of another girder (structural material) 23 and is fixed by bolts or the like. In this case, the girders 22 and 23 are arranged at a predetermined interval. Then, the floor slab 24 on the upper floor is placed and fixed on the balcony support beam 32 extending inside the building body 20. Here, balcony unit 31
A balcony slab 35, a handrail 36, a furring strip, an eaves ceiling, a beam (all of which are not shown), etc. are attached in advance.

In this support structure, the balcony support beam 32
Since the middle part of the beam is pin-fixed on the girder 22 of the building body 20 so that only the force in the weight direction acts, the balcony support beam 21 is simply supported by the girders 21 and 22 as shown in FIG. To be done. Therefore, the balcony support beam 3
The girder 22 that supports the middle part of 2 and the balcony support beam 3
The shear bending moment does not act on the girder 23 supporting the extended end 34 of the second girder 2, and the girders 22 and 23 are not twisted. Further, since the extended end 34 of the balcony support beam 32 is fixed to the large beam 23, the support is stable even before the floor slab 24 on the upper floor is placed, and the workability after the installation of the balcony unit 31 is improved.

FIG. 3 shows the relationship between the building body 20 and the balcony unit 31, FIG. 4 shows the structure of the balcony unit, and FIG. 5 shows the balcony unit 31 with the girder 2.
2 and 23 are shown mounted. As shown in FIG. 3, the building body 20 is configured by sequentially assembling a building unit 40 configured in a rectangular parallelepiped shape in a vertical direction, a horizontal direction, and a height direction, and each building unit 40 is configured by a steel frame. Has a skeleton. That is, the building unit 40
Is a column 41 at the four corners, lower beams 42 and 43 connecting the lower ends of the columns 41, and an upper girder 44 connecting the upper ends of the columns 41.
And an upper beam 45 and other members (not shown here). Here, two girders 44
Among them, the girder near the outer wall corresponds to the girder 22 in FIG. 1, and the girder at the back corresponds to the girder 23 in FIG. On the other hand, as shown in FIG. 4, the balcony unit 31 is configured by protruding the balcony support beam 32 from the main body portion 33 by a predetermined length, and united with the balcony slab 34, the handrail 35 and the like assembled. Has been done. It should be noted that one end of the balcony support beam 32 is included in the main body portion 33 of the balcony unit as shown by the dotted line.

When assembling this balcony unit 31 to the main body of the building, the balcony unit 31 is hung at the stage where the building unit 40 on the lower floor is assembled in advance (see FIG. 3), and as shown in FIG. The middle part of the balcony support beam 32 is placed on the large beam 22 (44) near the outer wall of the building unit 40, and the extended end 34 of the balcony support beam 32 is placed on the large beam 23 (44) on the back side, respectively. Secure with bolts. Next, when the assembling of the balcony unit 31 is completed, the building unit 40 on the upper floor is placed and connected, and this is sequentially repeated to complete the building body.

Second Embodiment Next, a second embodiment of the present invention will be described. When the middle part of the balcony support beam 32 is placed on the girder 22 near the outer wall and the extension end 34 is placed on the girder 23 on the back side as in the first embodiment, the main body part 33 of the balcony unit is Due to the weight, the extended end 34 has a girder 2 closer to the outer wall.
An upward force acts on the fulcrum 2 (of course, the weight of the extension end 34 side of the balcony support beam 32 acts downward, but this downward force is equal to the weight of the main body portion 33 side of the balcony unit). It's small enough in comparison, so it's not considered here). Therefore, the extension end 34
Must support with a downward force.

Therefore, in this second embodiment, as shown in FIG. 6, the load of the floor slab 24 on the upper floor is applied downward to the extended end 34 of the balcony support beam 32. Specifically, the receiving object 38 is provided on the upper surface of the extension end 34 of the balcony support beam 32, and the floor slab 2 is focused on the receiving object 38.
The floor slab 24 is supported so that the load of 4 acts. FIG. 7 shows the principle, and FIG. 8 shows the relationship with the girders 22 and 23 of the building unit 40. It is to be noted that the extension end 34 may be attached to the nearby girder 23 or the like by the member 39 having low strength.
It does not matter to connect the lightly. By doing so, the upward force acting on the extension end 34 of the balcony support beam 32 and the downward load (self-weight) of the floor slab 24 are offset,
It is not necessary to rely on the large beam 23 on the back side to support the balcony support beam 32, and the balcony 30 can be supported without installing a member for supporting the balcony support beam 32. However, in this case, the downward load (weight of the balcony 30 and weight of the floor slab 24) is entirely applied to the large beam 22 on the outer wall side. However, since the downward load applied to the girder 22 on the outer wall side can be easily supported by providing the stud or the like, there is no problem unlike the case where the column is provided in the room.

The embodiment of the present invention has been described in detail above with reference to the drawings. However, the specific structure is not limited to this embodiment, and there are design changes and the like within the scope not departing from the gist of the present invention. Also included in the present invention. For example, in the above embodiment, the case where the external body is a balcony has been described, but it may be an outer corridor or the like.

[0018]

As described above, according to the invention described in claim 1, since the shear bending moment does not act on the girder of the building body, the girder can be prevented from being twisted.
There is no need for special reinforcement against twisting and increased beam strength. Therefore, there is no restriction on the installation position or size of the balcony, and the flexibility of the design plan is increased.

According to the second aspect of the invention, if the balcony supporting beam of the balcony unit is placed on the girder of the assembled building unit at the site, the assembly is completed, so the field work is easy. Complete. Further, according to the invention of claim 3, since the support is stabilized by fixing the extended end of the balcony support beam to another beam of the building body,
Workability is improved. Furthermore, according to the invention of claim 4, since the upward force acting on the extended end of the balcony support beam can be canceled by the load of the floor slab, it is necessary to provide a member for supporting the extended end. Absent.

[Brief description of drawings]

FIG. 1 is a schematic side sectional view of a support structure for a balcony that is a first embodiment of the present invention.

FIG. 2 is a principle diagram of the embodiment.

FIG. 3 is a perspective view showing a skeleton of the overall configuration of the embodiment.

FIG. 4 is a perspective view of a balcony unit used in the embodiment.

FIG. 5 is a perspective view showing the relationship between the balcony unit and the girder.

FIG. 6 is a side sectional view of a balcony supporting structure according to a second embodiment of the present invention.

FIG. 7 is a principle diagram of the embodiment.

FIG. 8 is a perspective view showing a relationship between a balcony unit and a girder used in the embodiment.

FIG. 9 is an external perspective view of a dwelling unit to which a balcony is attached.

FIG. 10 is a side sectional view showing an example of a conventional balcony support structure.

FIG. 11 is a side view showing another example of a conventional balcony support structure.

[Explanation of symbols]

 20 Building Main Body 21 Exterior Wall 22 Large Girder 23 Large Girder (Structural Material) 24 Floor Slab 30 Balcony 31 Balcony Unit 32 Balcony Supporting Beam 34 Extension End 40 Building Unit 44 Large Girder

Claims (4)

[Claims] 1. A support structure for a balcony provided so as to project outside a building body, wherein a balcony support beam that is substantially orthogonal to an outer wall of the building body is provided on the balcony, and the balcony support beam extends from the balcony to the inside of the building body. Characterized in that the intermediate portion of the balcony support beam is placed on the girder of the building body adjacent to the outer wall, and the extended end of the balcony support beam is supported by the structural material of the building body. Support structure for balcony. 2. The structure for supporting a balcony according to claim 1, wherein the building body is composed of a building unit, and the balcony is composed of a balcony unit having a balcony supporting beam. 3. The extension end of the balcony support beam is fixed to another beam of the building body which is arranged at a distance from a large beam of the building body adjacent to the outer wall. Alternatively, the balcony support structure described in 2. 4. The support structure for a balcony according to claim 1, wherein a load of a floor slab of the building body is applied downward to an extended end of the balcony support beam.