JPH11172819A - Wall column structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To widen an opening part by a method wherein a shape steel having upper and lower ends anchored at upper and lower beams are embedded in a wall column arranged at the-side edge of the opening part formed in the wall surface of a building, and arrangement is effected such that the direction of the strong axis of the shape steel is pointed to a vibration resisting direction for an earthquake. SOLUTION: An H-shape steel 22 serving as a shape steel having upper and lower end parts anchored at upper and lower beams is embedded in a wall column 14 arranged at the side edge of an opening part, and arrangement is effected such that the direction of the strong axis of the H-shape steel points to the strong axis of the H-shape steel 22. The H-steels 22 are arranged at equal intervals along the direction of the wall surface of the wall column 14, and a vertical bars 24 are vertically arranged on the surface side of the wall column 14 with the wall column 14 nipped. Further, since horizontal bars 31 are arranged at the outside and concrete 26 is placed. Thus, the H-steel 22 is embedded in the wall column 14 the wall column 14 is brought into a wall type structure, strength is eminently improved, the increase of a bearing and ductility is achieved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wall column structure provided on a side edge of a wall opening of a building.

[0002]

2. Description of the Related Art In a multistory RC building such as an apartment,
In general, a large window or veranda is provided on the wall centering on the south side, so that daylight from the window is increased and the veranda is moved in and out. The window is provided in an opening formed in a wall surface, and a side edge of the opening serves as a wall pillar to support a load on an upper floor. It is desirable that the opening be large and the window be as wide as possible.

[0003]

However, in such a conventional wall-post structure, the above-mentioned wall-posts have the same shape as a building.
Due to the C-structure, if the opening is to be enlarged, the wall post is inevitably narrow, and the supporting load per unit area of the wall post is increased. For this reason,
If the opening is enlarged and the wall column is narrowed, the wall column is likely to be sheared and destroyed by a large vibration input such as a large earthquake. Therefore, it is necessary to prevent the wall columns from becoming too narrow in order to secure necessary strength in an emergency such as an earthquake or a strong wind. For this reason, there is a problem that a large opening cannot be obtained, and a large window cannot be provided.

Accordingly, the present invention has been made in view of such a conventional problem, and has a wall-type structure in which a steel frame material is inserted to increase the rigidity of the wall column, thereby making it possible to increase the wall opening. It is intended to provide a pillar structure.

[0005]

In order to achieve the above object, a wall column structure of the present invention will be described in each claim.

A first aspect of the present invention is a wall post provided at a side edge of an opening formed in a wall surface of a building, wherein a mold steel for fixing upper and lower ends to upper and lower beams is embedded in the wall post, and The steel molds are arranged with the strong axis direction facing the vibration-proof direction such as an earthquake.

According to a second aspect of the present invention, the upper and lower ends of the section steels corresponding to each other on the upper and lower floors are overlapped and joined to each other at a beam portion.

The operation of the present invention having the above structure will be described below for each claim.

According to the wall column structure of the present invention, the wall column has a shear strength which is remarkably improved by burying a mold steel having upper and lower ends fixed to the upper and lower beams inside the wall column. Of high yield strength and high toughness,
By arranging the shape steel with its strong axis direction directed toward the anti-vibration direction such as an earthquake, the seismic resistance of the wall column can be further improved. Therefore, the wall pillar provided on the side edge of the opening in the wall surface can be formed to be narrower, and the opening in the wall surface can be widened accordingly.

In the wall column structure of the present invention, the upper and lower end portions of the above-mentioned sectional steels corresponding to each other on the upper and lower floors are overlapped with each other at the beam portion, so that the respective sectional steels need to be joined by bolting or welding. Therefore, the workability can be improved and the construction period can be shortened.

[0011]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. 1 to 4 show an embodiment of the wall pillar structure of the present invention. FIG. 1 is a sectional view of a part of a building using wall pillars as viewed from the indoor side, and FIG. 2 is a cross sectional view of the wall pillars. 3 is a longitudinal sectional view showing the relationship between the upper and lower floors of the wall column, FIG.
FIG. 4 is a characteristic diagram showing a relationship between an input load and a displacement of a wall column in comparison with a related art.

That is, the wall column structure of the present embodiment is applied to a RC multi-story building as in the case of the related art, and is particularly applied to a residential building such as an apartment. Such a residential multi-story building usually has a corridor as a passage on the north and west sides, and a veranda on the south and east sides. As shown in FIG. 1, an opening 12 is formed in the wall surface 10 that communicates with the veranda, and the opening 12 serves as a window, and a glass door is attached. Lighting is planned. Therefore, it is desirable that the opening 12 be as large as possible to provide sufficient light.

The wall 12 is formed with the openings 12 so that the space between the openings 12 becomes a wall pillar 14.
The wall pillars 14 support a building load acting on the wall surface 10 and a vibration load due to an earthquake, wind, or the like.
Further, on the room R side of the wall pillar 14, a door border wall 16 for partitioning the room from an adjacent room is formed as an RC structure orthogonal to the wall surface 10. The wall surface 10 and the door wall 16 are arranged along a beam 18 and are supported by a beam 18 under the floor.
And the beam 18 of the ceiling.

In this embodiment, the upper and lower ends of the upper and lower beams 18 are provided inside the wall pillars 14 provided at the side edges of the opening 10.
H-shaped steel 22 as a mold steel to be fixed to
The H-shaped steel 22 is configured by arranging the strong axis direction in a vibration-proof direction (in-plane direction) such as an earthquake. As is generally known, the H-shaped steel 22 is a steel material formed into an H-shaped cross section by connecting the center portions of the opposed surfaces of the flanges on both sides with a web, and is generally marketed as another type of standardized product. In the H-beam 22, the width direction of the web is the strong axis direction, and the thickness direction of the web is the weak axis direction.

A plurality (four in the present embodiment) of the H-shaped steels 22 are arranged at regular intervals along the wall direction of the wall column 14 and sandwich the wall column 14. On the front and back sides of the wall pillar 14, a number of vertical streaks 24 are passed in the vertical direction, and a horizontal streak 31 is passed outside thereof. Then, the outside of the vertical streaks 24 and the horizontal streaks 31 is covered with a mold (not shown), and a concrete 26 is cast therein.
The H-shaped steel 22 and the vertical bars 24 are embedded therein.

The upper and lower ends of the H-shaped steel 22 are embedded and fixed in the upper and lower beams 18 as shown in FIG. At this time,
The H-shaped steels 22 corresponding to each other on the upper and lower floors are configured such that their respective ends are overlapped in the beam 18 to form a lap joint 28.

According to the wall column structure of the present embodiment, the H-shaped steel 22 whose upper and lower ends are fixed to the upper and lower beams 18 is embedded in the wall column structure of the present embodiment. The H-shaped steel 22 has a structure that can significantly improve strength and achieve high strength and high toughness, and the strong axis direction of the H-shaped steel 22 is arranged in a vibration-proof direction such as an earthquake (in-plane direction). The seismic strength of the wall columns 14 can be significantly improved.

That is, FIG. 4 is a characteristic diagram showing the strength of a wall column in a load-displacement relationship.
Conventional characteristics B are shown by broken lines. P1 in the figure
, P2 are the ultimate points at which the wall column 14 is damaged. In addition, in FIG. 1, the crack C is the wall column 1 due to the shearing force before the maximum load.
4 enters a diagonal shape from the corner.

Therefore, as can be understood from the above characteristic diagram, in the present embodiment, the maximum load is increased on the wall column 14 by incorporating the H-shaped steel 22, thereby achieving a high proof stress and a maximum displacement. , Thereby achieving high toughness.

Therefore, the strength and toughness of the wall column 14 are improved, so that the wall column 14 can be formed to be narrower.
Opening 12 can be widened. For this reason, it is possible to take sufficient light by taking a larger window portion, and it is possible to further improve the livability of the room R.

In this embodiment, the upper and lower ends of the H-shaped steels 22 corresponding to each other on the upper and lower floors are overlapped with each other at the beam 18 so that the fixing strength of the upper and lower ends of each H-shaped steel 22 is reduced. Since it can be secured by a simple structure, the workability can be improved and the construction period can be shortened. Furthermore, the use of a die steel which is a commercially available product such as the above-mentioned H-shaped steel 22 can significantly reduce the cost.

FIG. 5 is a cross-sectional view of a wall column corresponding to FIG. 2 showing another embodiment. The same components as those in the above embodiment are denoted by the same reference numerals, and redundant description will be omitted.

That is, in this embodiment, the channel steel 3 is used as the model steel.
0 is used. The channel steel 30 is a steel material having a U-shaped cross section, which is also generally marketed as another type of standardized product. In this embodiment as well, a plurality (five in this embodiment) of the channel steels 30 are arranged at equal intervals along the wall surface of the wall column 14, and further vertically sandwiched between the channel steels 30. Streak 2
4 and the horizontal streaks 31 are arranged, and the channel steel 30 and the vertical streaks 24 and the horizontal streaks 31 are buried in the concrete 26 to be constructed as the wall pillar 14 having the RC structure. Further, the channel steel 30 is arranged in an in-plane direction along the wall column 14 in which the strong axis direction is the vibration-proof direction, and furthermore, the channel-shaped steel 30 has a U-shaped open side adjacent thereto and is opposite to each other. It is arranged to be oriented.

Therefore, even in this embodiment, the channel steel 3
Since 0 is provided, high strength and high toughness of the wall column 14 are achieved, and the strong axis direction of the channel steel 30 is arranged in the vibration-proof direction, so that the seismic strength of the wall column 14 can be increased. The wall pillars 14 can be made narrower, and thus the opening 12 can be made wider to increase the window area. Of course, even in this embodiment, the workability can be improved and the construction period can be shortened by lap jointing the upper and lower ends of the channel steel 30 arranged on the upper and lower floors.

In each of the embodiments described above, H is used as the shape steel.
Although the case where the mold steel 22 or the channel steel 30 is used has been disclosed,
Of course, the present invention can be achieved by using a mold steel other than the H type and the groove type.

[0026]

As described above, in the wall column structure according to the first aspect of the present invention, since the mold steel whose upper and lower ends are fixed to the upper and lower beams is buried inside the wall column. The wall column has a wall-type structure, and its strength is remarkably improved. It is possible to achieve high strength and toughness of the wall column, and the strong axis direction of the steel column is set to the direction of vibration resistance such as earthquake (in-plane direction). Since they are arranged facing, the seismic resistance of the wall columns can be significantly improved. Therefore, the wall pillar provided on the side edge of the opening of the wall can be formed to be narrower, so that the opening of the wall can be widened accordingly, and the window provided in this opening can be extended. And the livability can be further improved.

In the wall column structure according to the second aspect of the present invention, since the upper and lower ends of the above-mentioned steel bars corresponding to each other on the upper and lower floors are overlapped with each other at the beam portions, the respective steel bars are formed. The fixing strength at the upper and lower ends can be secured,
The workability can be improved and the construction period can be shortened. Therefore, there is an excellent effect that the opening can be made wider and the window area can be further increased.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a part of a building using wall columns according to an embodiment of the present invention, as viewed from the indoor side.

FIG. 2 is a cross-sectional view of a wall column showing one embodiment of the present invention.

FIG. 3 is a longitudinal sectional view showing a relationship between upper and lower floors of a wall column showing one embodiment of the present invention.

FIG. 4 is a characteristic diagram showing a relationship between an input load and a displacement of a wall column according to an embodiment of the present invention, as compared with a related art.

FIG. 5 is a cross-sectional view of a wall column corresponding to FIG. 2, showing another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Wall surface 12 Opening 14 Wall pillar 18 Beam 22 H-shaped steel (Shaped steel) 28 Lap joint 30 Groove shaped steel (Shaped steel)

Claims (2)

[Claims] 1. A wall column provided on a side edge of an opening formed in a wall surface of a building, wherein a mold steel for fixing upper and lower ends to upper and lower beams is embedded inside the wall column. The wall column structure, characterized by the strong axis direction of the wall facing the direction of anti-vibration such as earthquake. 2. A wall column structure wherein upper and lower ends of the above-mentioned steel bars corresponding to each other on upper and lower floors are overlapped with each other at a beam portion.