JP4095481B2 - Building structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a building structure, and more particularly to a technique for improving earthquake resistance.
[0002]
[Prior art]
Conventionally, in buildings, struts are provided in the bearing walls so that they do not collapse due to pressure such as earthquakes and strong winds. This striation is a diagonal material that fixes one side between adjacent columns to the top of the column and the other side diagonally to a base (or a structural material such as a beam or beam) that supports the base of the adjacent column. It may be used not only in the form of a plow. Moreover, when the thickness of the wall cannot be used, the reinforcing bars and wires may be used in tension instead of the struts.
[0003]
By the way, although such a structure has sufficient strength against strong winds, earthquakes are not limited to vertical vibrations or horizontal vibrations but are accompanied by complex vibrations. To cause collapse.
[0004]
[Problems to be solved by the invention]
The problem to be solved by the present invention is to solve these conventional problems and to provide a low-cost building structure that can withstand not only horizontal and vertical vibrations but also composite vibrations.
[0005]
[Means for Solving the Problems]
The configuration of the present invention that solves this problem is as follows.
1) A plurality of bars made of slant steel having an inclination angle in the range of 40 to 50 ° and an outer diameter in the range of 2.6 to 10.0 mm are mutually spaced apart by an interval of 40 to 200 mm. Crossed into a net- like shape , and the crossing points are firmly fixed by welding to form a planar reinforcing member, and the edge of the reinforcing member is framed in the opening surrounded by the skeletal member constituting the wooden frame building fixed to a plane parallel to the plane of the wall material in the member, architectural structure that to enhance the earthquake resistance
It is in.
[0006]
[Action]
According to the present invention, a plurality of slanted steel bars and small diameter bars having an outer diameter in the range of 2.6 to 10.0 mm are crossed with each other at a predetermined interval, and the crossed points are firmly fixed by welding. By using a planar reinforcing member instead of struts, it is possible to withstand not only horizontal and vertical vibrations but also composite vibrations. Held over.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Bars constituting the reinforcing member of the present invention uses made of steel, steel bar for reinforced concrete is generally used. In addition to round steel bars, there are other types of steel bars such as deformed steel bars with nodes and ribs, and those having an outer diameter in the range of 2.6 to 10.0 mm are selected according to the required strength.
[0008]
The plurality of bars are crossed at an angle of 40 to 50 ° (desirably 45 °) with respect to the horizontal with an interval of 40 to 200 mm, and the crossed portions are crossed by means such as spot welding. It adheres firmly.
[0009]
Face this reinforcing member to the rectangular opening surrounded by the building frame (beams, foundations, pillars, etc.) by means such as bifurcated nails, screws, bolts (welding, etc. if the frame is a metal), etc. Attach to the shape.
[0010]
【Example】
Embodiments of the present invention will be specifically described below with reference to the drawings. The embodiment shown in FIGS. 1 to 9 is an example in which the present invention is applied to a load-bearing wall of a wooden frame. FIG. 1 is an explanatory diagram of the building structure of the embodiment, FIG. 2 is an enlarged explanatory view showing a mounting portion of the reinforcing member of the embodiment, FIG. 3 is a perspective view of the reinforcing member of the embodiment, and FIG. FIG. 5 and FIG. 6 are explanatory diagrams illustrating the construction of the comparative example, FIG. 7 is an explanatory diagram illustrating the study of the proof stress of the example, and FIGS. 8 and 9 are explanatory diagrams illustrating the study of the proof stress of the comparative example. In the figure, 1 is a cloth foundation, 2 is a base, 3 is a column, 4 is a beam, 5 is a reinforcing member, 5a is a bar, 5b is a welded part, 5c is a frame material, 5d is a double nail, and 7 is a streak , 8 are hardware, and 9 is a structural plywood.
[0011]
As shown in FIGS. 3 and 4, the reinforcing member 5 of the present embodiment has a plurality of bars 5 a made of hot-rolled steel bars having an outer diameter of 3.2 mm and an allowable stress of 1600 kg / cm ² at 45 ° with respect to the horizontal. Crossing is performed at an interval of 50 mm at an inclination angle, and the crossing portions of each bar 5a are spot-welded and firmly fixed, and a frame member 5c having the same diameter as that of the bar 5a is fixed to the outer peripheral edge by spot welding. The length is 1820 mm and the length is 2872.5 mm. The frame member 5c may not be used depending on the part to be attached.
[0012]
The reinforcing member 5 is attached to the building frame during the wooden work. As shown in FIG. 1, a mortar-processed base 2 of 105 × 105 mm is installed on the fabric foundation 1, and a pillar 3 made of 105 × 105 × 2850 mm cedar is inserted into the mortar of the base 2 to stand. The beam 4 made of 105 × 180 mm rice pine is horizontally mounted between the upper ends of the pillars 3 and the reinforcement is formed in the rectangular opening surrounded by the base 2, the pillars 3 and the beams 4 as shown in FIG. The member 5 is attached to the wall surface with the bifurcated nail 5d. The bifurcated nail 5d is driven in the vertical direction in FIG. 2, but it may be driven in the horizontal direction depending on the location.
[0013]
As a comparative example, instead of the reinforcing member 5 as shown in FIG. 5, a strut 7 made of cedar wood (Class B structural material grade 3 H12 construction 1452) having a permissible stress of 183.5 kg / cm ² is regularly used. Are attached diagonally in one direction. Further, as shown in FIG. 6, a structural plywood 9 having a size of 910 × 1820 × 12 mm and an allowable stress of 184 kg / cm ² is attached to a rectangular opening in a wall shape.
[0014]
Here, it examined about how much it can endure a seismic force (horizontal load) about a present Example and a comparative example (refer FIGS. 7-9). As is clear from this result, when the reinforcing member 5 of the present example was used, it showed an extremely excellent proof stress of about 9.04 times compared to the strut 7. Moreover, since the reinforcing member 5 has no directionality unlike the striations 7, the reinforcing member 5 has sufficient strength against compound loads from all directions such as horizontal and vertical loads caused by earthquakes, and is extremely excellent in earthquake resistance. Further, the reinforcing member 5 showed an excellent yield strength of 1.89 times as compared with the structural plywood 9. The specific gravity of the structural plywood 9 was 6.64 to 7.84 kg / m ^2, whereas the reinforcing member 5 of the present example was 2.52 kg / m ² , which was lightweight.
[0017]
【The invention's effect】
As described above, according to the present invention, a proof stress that can withstand not only horizontal and vertical vibrations but also composite vibrations is provided, and a strong structure is maintained for a long time regardless of the pressure applied from any direction. be able to.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a building structure of an example.
FIG. 2 is an enlarged explanatory view showing attachment of a reinforcing member according to an embodiment.
FIG. 3 is a perspective view of a reinforcing member according to an embodiment.
FIG. 4 is an enlarged explanatory view of a reinforcing member according to an embodiment.
FIG. 5 is an explanatory diagram of a building structure of a comparative example.
FIG. 6 is an explanatory diagram of a building structure of a comparative example.
FIG. 7 is an explanatory diagram showing examination of the proof stress of an example.
FIG. 8 is an explanatory diagram showing a study of yield strength of a comparative example.
FIG. 9 is an explanatory diagram showing a study of yield strength of a comparative example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cloth foundation 2 Base 3 Pillar 4 Beam 5 Reinforcement member 5a Bar material 5b Welded part 5c Frame material 5d Two-way nail 7 Stitch 8 Hardware 9 Plywood for structure

Claims (1)

A plurality of bars made of slanted steel having an inclination angle in the range of 40 to 50 ° and having an outer diameter in the range of 2.6 to 10.0 mm are crossed with each other at intervals of 40 to 200 mm. It is made into a net shape , and the crossing points are firmly fixed by welding to form a planar reinforcing member, and the edge of the reinforcing member is attached to the opening portion surrounded by the skeleton member constituting the wooden frame building in the skeleton member fixed to a plane parallel to the plane of the wall material, building structure which is to enhance the earthquake resistance.

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