JP4521950B2 - Column structure and column construction method - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a pillar structure of a building and a pillar construction method.
[0002]
[Prior art]
The strength required for the pillars of buildings built in snowy areas is higher than when it is built in non-snowy areas. Therefore, a building designed for an area that is not a snowy area cannot be applied to a snowy area as it is, and the thickness of the pillar is increased, the cross-sectional diameter of the pillar is increased, or both are performed. It corresponds by that.
[0003]
[Problems to be solved by the invention]
By the way, there are building structures that attach external wall panels and horizontal members (beams, etc.) to pillars. If the above conventional countermeasures are implemented in such building structures, the column sizes will be different. It may be necessary to shift the mounting position or change the mounting method (changing the contact details). Moreover, not only is it necessary to provide pillars for snowy areas and those for other areas, but there is a complaint that production efficiency will be reduced because the number of parts will increase due to changes in details.
[0004]
In view of the above circumstances, the present invention provides a column structure and a column that can suppress the increase in the number of components as much as possible without increasing the detail of engagement with the outer wall panel and the horizontal member in increasing the proof stress of the column. The purpose is to provide a construction method.
[0005]
[Means for Solving the Problems]
In order to solve the above-described problem, the column structure of the present invention is provided for attaching the outer wall panel to a main column provided with a mounting portion for the outer wall panel, and adjacent to the main column on the base on which the main column is built. It has a reinforcing column built so as not to be buffered, and the main column and the reinforcing column are connected to each other.
[0006]
If it is said structure, the proof stress as the whole column structure will exceed the proof strength of the main pillar itself, and can be applied to the building where high column proof strength is requested | required. And because the main column itself is not required to be changed just because a high column strength is required, it can be used in common, so there is no need to change the details with the outer wall panel. In addition, an increase in the number of parts can be suppressed as much as possible.
[0007]
The height of the reinforcing column is preferably set below the position where the horizontal member is attached to the main column. With such a configuration, it is possible to eliminate the need to change the engagement details with the horizontal member. Further, at least the main column of the main column and the reinforcing column may be a steel pipe column. If the steel pipe pillar has a square cross section, the reinforcing pillars face each other on the flat surface of the square cross section and both can be easily joined.
[0008]
Further, the column construction method of the present invention is a column construction method for responding to a demand for increasing the yield strength required for the pillar, and requires a yield strength exceeding the yield strength of the main pillar provided with the mounting portion of the outer wall panel. In this case, one kind of reinforcing pillar adjacent to the main pillar on the base on which the main pillar is to be built and two or more kinds having different reinforcing forces from each other is selected so as not to buffer the mounting of the outer wall panel. It is characterized by building a reinforced column and connecting the main column and the reinforced column.
[0009]
If it is said structure, the proof stress as the whole column structure will exceed the proof strength of the main pillar itself, and can be applied to the building where high column proof strength is requested | required. And because the main column itself is not required to be changed just because a high column strength is required, it can be used in common, so there is no need to change the details with the outer wall panel. In addition, an increase in the number of parts can be suppressed as much as possible. In addition, when building a reinforcement column by selecting from two or more types having different reinforcement strengths, it is possible to cope with cases where the required column strength exceeds the strength of the main column and the degree of increase differs. it can.
[0010]
Two or more types of reinforcing columns having different reinforcing forces may have different cross-sectional sizes. Here, two or more types of reinforcing columns having different reinforcing forces may be made to have the same cross-sectional size and different thicknesses, but this makes it easy to distinguish the two types of reinforcing columns on the appearance. Not. If it is the said structure, it will become easy to distinguish two types of reinforcement pillars on an external appearance, and the attachment mistake of a reinforcement pillar can be prevented.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 3. 1 is a cross-sectional view showing a column structure, FIG. 2 is a cross-sectional view of the column structure showing a case where the outer wall panel is different from FIG. 1, and FIG. 3 is a side view showing the column structure.
[0012]
1 (a) and 1 (b), the main column 1 is made of a thin-walled square steel tube column having a rectangular cross section, and the long side direction is arranged to be orthogonal to the surface of the outer wall panel 2A. Nuts 3 are fixed to the surfaces (both side surfaces) of the main column 1 in the long side direction by welding or the like. The outer wall panel 2A is mainly composed of, for example, a calcium silicate plate, and a panel frame 4 is attached to the back surface thereof. A through-hole is formed in the vertical frame (which has a substantially L-shaped cross section) 4A in the panel frame 4 at a position corresponding to the nut 3, and the bolt 5 is screwed into the nut 3 through the through-hole. Thus, the outer wall panel 2 </ b> A is fixed to the main pillar 1. Adjacent end surfaces of the two outer wall panels 2A and 2A are positioned at a predetermined distance from the approximate center of the surface (front surface) that faces the short side of the main pillar 1 and faces the outer wall panel 2A. The adjacent end faces form a gap without being in close contact with each other, and the gap is filled with the silicone resin 6. Further, in the portion corresponding to the gap between the front surface of the main pillar 1 and the back surface of the outer wall panel 2 and filled with the silicone resin 6, foamed polyethylene is provided in the vertical direction as a backup material 7, and Secondary waterproofing material 8 is provided on both sides of the backup material 7 in the same vertical direction so as to sandwich the backup material 7.
[0013]
A reinforcing column 9 is built on the rear side of the main column 1. A reinforcing column 9A shown in FIG. 1 (a) is a thin-walled square steel tube column having a square cross section with the same length as the short side of the main column 1, and a reinforcing column 9B shown in FIG. It consists of a thin-walled square steel tube column with a square section longer than the side length. The reinforcing column 9B has a higher reinforcing force than the reinforcing column 9A. Plate members 10, 11 and 15 are interposed between the main column 1 and the reinforcing column 9, and these are fixed to each other by welding the columns 1 and 9. The plate material 15 provided at the lowermost end and the plate material 11 provided at the uppermost side are gusset plates and are wider than the columns.
[0014]
2 (a) and 2 (b), the main pillar 1 is the same as the main pillar shown in FIG. 1, and is used in common even if the outer wall panels are different. The outer wall panel 2B is mainly composed of, for example, an extruded cement board, and a panel frame 4 'is attached to the back surface thereof. A through-hole is formed in a position corresponding to the nut 3 in the vertical frame (which has a substantially L-shaped cross section) 4A in the panel frame 4 ', and the bolt 5 is screwed into the nut 3 through the through-hole. As a result, the outer wall panel 2 </ b> B is fixed to the main pillar 1. Adjacent end faces of the two outer wall panels 2B and 2B are positioned at a predetermined distance from a substantially center of a surface (front surface) that is a short side direction of the main pillar 1 and faces the outer wall panel 2B. This adjacent end face forms a gap without being in close contact, and the silicone resin 6 is filled in a portion of the gap on the outdoor side. In addition, a backup material 7 is provided in the vertical direction between the non-filled portion of the silicone resin 6 and the front surface of the main column 1 in the gap, and the front surface of the main column 1 and the outer wall panel 2B of the backup material 7 are further provided. The secondary waterproof material 8 is provided in the both sides so that the part located between the back surfaces of this may be pinched | interposed.
[0015]
A reinforcing column 9 is built on the rear side of the main column 1. The reinforcing column 9A shown in FIG. 2 (a) is the same as the reinforcing column 9A shown in FIG. 1 (a), and the reinforcing column 9B shown in FIG. 2 (b) is the same as the reinforcing column 9B shown in FIG. 1 (b). It is. Plate members 10, 11 and 15 are interposed between the main column 1 and the reinforcing column 9, and these are fixed to each other by welding the columns 1 and 9. The plate material 15 provided at the lowermost end and the plate material 11 provided at the uppermost side are gusset plates and are wider than the columns.
[0016]
The interconnection between the main pillar 1 and the reinforcing pillar 9 may be performed at a factory or at a construction site. Here, which one of the reinforcing column 9A and the reinforcing column 9B is selected as the reinforcing column 9 depends on the difference in the proof stress required for the column of the building using the column structure. Reinforcing columns 9A and 9B are prepared in the factory, and either one is selected based on the design specifications, and the selected reinforcing column 9 and main column 1 are connected. That is, by preparing two types of reinforcing columns 9A and 9B, it is possible to cope with a case where the required column strength exceeds the strength of the main column and the degree of increase differs. Of course, depending on the strength required for the pillar of the building, the reinforcing pillar 9 may not be connected.
[0017]
FIG. 3 is a side view showing the column structure. The lower end of the main column 1 and the lower end of the reinforcing column 9 are joined to the base plate 12 by welding or the like. This joining is preferably performed at the factory, but this does not exclude performing at the construction site. Further, the lowermost plate member 15 among the plate members is also joined to the base plate 12 by welding or the like. The base plate 12 is disposed on the foundation 13. One end side of a steel pipe truss beam 14 which is a horizontal member is joined to the upper part of the main column 1. The steel pipe truss beam 14 is composed of an upper chord steel pipe 14a, a lower chord steel pipe 14b, and diagonal members (lattices) 14c which are arranged and fixed obliquely between these steel pipes. The height of the reinforcing column 9 is set lower than the position where the steel pipe truss beam 14 is attached to the main column 1 (lower than the lower chord steel pipe 14b).
[0018]
As described above, since the reinforcing column 9 is connected to the main column 1, the proof strength of the entire column structure exceeds the proof strength of the main column 1 itself, and can be applied to buildings that require high column strength. And since the main pillar 1 itself is used in the case where a different column strength is required, it is not a division that needs to be changed just because a high column strength is required, so the outer wall panel 2A (2B) is used. )), And the increase in the number of parts can be suppressed as much as possible. Further, by setting the height of the reinforcing column 9 below the position where the truss beam 14 is attached to the main column 1, it is possible to eliminate the need to change the engagement detail with the truss beam 14. Although the example which employ | adopted the square steel pipe column as the main pillar 1 was shown, it is not restricted to this, A round steel pipe may be sufficient. However, if a square steel pipe column is used, there is an advantage that it is possible to easily join the reinforcing columns 9 facing each other on the flat surface. Further, although the reinforcing column 9A and the reinforcing column 9B have the same thickness and different cross-sectional sizes, the present invention is not limited to this. For example, the wall thickness may be varied with the same cross-sectional size. However, this makes it difficult to distinguish the two types of reinforcing pillars in appearance. According to this embodiment in which the thickness is made the same and the cross-sectional sizes are made different, it is easy to distinguish the two types of reinforcing columns on the appearance, and it is possible to prevent an error in attaching the reinforcing columns.
[0019]
【The invention's effect】
As described above, according to the column structure and the column construction method of the present invention, there is an effect that an increase in the number of components can be suppressed as much as possible without changing the details of engagement with the outer wall panel and the horizontal member. .
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a column structure according to an embodiment of the present invention. FIG. 1 (a) shows a case where a reinforcing column 9A is used, and FIG. 1 (b) shows a case where a reinforcing column 9B is used. Show.
FIG. 2 is a cross-sectional view showing a column structure according to an embodiment of the present invention (the outer wall panel is different from FIG. 1). FIG. 2 (a) shows a case where a reinforcing column 9A is used, and FIG. ) Shows a case where the reinforcing column 9B is used.
FIG. 3 is a side view of a column structure according to an embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Main pillar 2,2A, 2B Outer wall panel 9,9A, 9B Reinforcement pillar 10 Plate material 12 Base plate 13 Foundation 14 Steel pipe truss beam

Claims (5)

A main column provided with a mounting portion for the outer wall panel, and a reinforcing column which is built on the base on which the main column is built, adjacent to the main column and not buffered for mounting the outer wall panel. A pillar structure characterized by connecting a pillar and a reinforcing pillar. 2. The column structure according to claim 1, wherein the height of the reinforcing column is set below a position where the horizontal member is attached to the main column. The column structure according to claim 1 or 2, wherein at least the main column is a steel pipe column among the main column and the reinforcing column. This is a pillar construction method for responding to the demand for increasing the strength required for the pillar, and this main pillar is built when it is necessary to exceed the strength of the main pillar provided with the mounting part of the outer wall panel. On the base, one type of reinforcing column that is adjacent to the main column and not buffered for the mounting of the outer wall panel, or a reinforcing column selected from two or more types that have different reinforcing forces, is constructed. A pillar construction method characterized by connecting a reinforcing pillar. 5. The column construction method according to claim 4, wherein two or more types of reinforcement columns having different reinforcement forces have different cross-sectional sizes.

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