JP3681629B2 - Bearing wall gusset plate and its mounting structure - Google Patents

Description

[0001]
[Industrial application fields]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a load-bearing wall gusset plate and a mounting structure thereof, and more particularly, to a load-bearing wall gusset plate and a mounting structure thereof that are attached to a corner of a load-bearing wall in order to attach a brace in a building such as a steel house. .
[0002]
[Prior art]
A conventional gusset plate 1 of this type shown in FIG. 8 is formed of a rectangular steel plate and is attached to four corners 3 of a load-bearing wall 2 of a building such as a steel house. Specifically, it was fixed to the outer surface of the pillar 4 and the frame 5 by a drilling tapping screw (hereinafter simply referred to as “screw”) 6. In this way, a pair of braces 7 hung on the four fixed gusset plates 1 were fixed with screws 6.
[0003]
[Problems to be solved by the invention]
However, in this prior art, since the gusset plate 1 is attached to the outer surfaces of the pillars 4 and the frame 5 and the brace 7 is attached to the gusset plate 1, the thickness is formed by the gusset plate 1, the screw 6 and the brace 7. It was. That is, when these members overlap, the local part of the load-bearing wall 2 (column 4 and frame 5) has protruded. For this reason, when wall boards, such as a structural plywood and a gypsum board, are attached to the outer surface of the load bearing wall 2, there existed a problem that an unevenness | corrugation and a curvature will generate | occur | produce in a wall board, and also a crack would generate | occur | produce.
[0004]
In order to avoid this, the adjustment plate is inserted between the wall plate and each member so as to eliminate the step due to the protrusion. However, since the step is large, it is necessary to insert a large number of adjustment plates at appropriate positions. was there. That is, the mounting of the wall plate was troublesome.
[0005]
Therefore, a main object of the present invention is to provide a load-bearing wall gusset plate and a mounting structure thereof capable of reducing the protrusion generated at the local portion of the load-bearing wall as much as possible.
[0006]
[Means for Solving the Problems]
The first invention is a gusset plate bearing walls of attached to the corners and made of steel sheet having a thickness comparable to the structural member constituting the steel house bearing wall to mount the breath in steel house, Form a notch at the location corresponding to the joint between the column of the bearing wall and the frame where the end of the column is inserted perpendicularly to the inner surface, and the lateral end on the side where the notch of the gusset plate is formed on the outer surface of the column A gusset plate of a load bearing wall in which a step is formed in the gusset plate by abutting and inserting a longitudinal end portion into the inner surface of the frame .
[0007]
A second invention is a mounting structure for a load-bearing wall gusset plate using the load-bearing wall gusset plate according to the first invention, wherein the lateral end of the gusset plate on the side where the notch is formed is provided with a column. It is a mounting structure for a gusset plate of a load bearing wall, which is fixed to an outer surface and has a longitudinal end on the side where a notch of the gusset plate is formed fixed to an inner surface of a frame.
[0008]
[Action]
A cutout is formed in the gusset plate of the present invention. This gusset plate is attached to the corner of the load-bearing wall of the steel house, and a pair of brace braces attached to the gusset plate. Specifically, the lateral end on the side where the notch of the gusset plate is formed is brought into contact with the outer surface of the column, and the longitudinal end on the side where the notch is formed is inserted into the inner surface of the frame. Then, for example, by a drilling tapping screw, the lateral end is fixed (fixed) to the outer surface of the column, and the vertical end is fixed to the inner surface of the frame. In such an attachment structure, a step is formed on the gusset plate. That is, a part of the front surface of the gusset plate is in contact with the inner surface of the frame, a part of the rear surface of the gusset plate is in contact with the outer surface of the column, and the inner surface of the frame and the outer surface of the column are provided on the same plane. Therefore, the gusset plate is deformed by its own thickness, and a step is formed. For example, when the breath is formed of a steel plate having the same thickness as the gusset plate, the thickness of the breath can be absorbed by the step.
[0009]
In addition, when the locking portion is provided continuously from the edge of the lateral end portion, when the gusset plate is attached, the locking portion is locked to the outer surface of the column for easy positioning. be able to. That is, the gusset plate can be easily attached.
[0010]
【The invention's effect】
According to this invention, since the thickness of the bracelet can be absorbed, the protrusion generated on the outer surface of the bearing wall can be reduced as much as possible. Therefore, it is possible to prevent the wall plate attached to the outer surface of the load bearing wall from being uneven and bent, and to prevent the wall plate from cracking. In addition, since the number of adjustment plates can be reduced, it is relatively easy to attach the wall plate.
[0011]
The above object, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.
[0012]
【Example】
Referring to FIG. 1, a gusset plate 10 of a load bearing wall according to this embodiment is attached to a corner 14 of a load bearing wall 12 provided in a steel house, for example, and a brace 16 is attached to the gusset plate 10. In this embodiment, the bearing wall 12 includes a pillar 18, an upper frame 20, a lower frame 22, and a stud 24.
[0013]
As shown in FIG. 2, the column 18 is composed of a double stud in which two studs (lip channel steel) 18a and 18b are joined to each other on the back surface of the web, and as shown in FIG. It arrange | positions at the both ends (left-right end) in (horizontal direction).
[0014]
In FIG. 2, only the lower end portion of the column 18 and a part of the lower frame 22 are shown for easy understanding, but the upper end portion of the column 18 is configured similarly to the lower end portion.
[0015]
The upper frame 20 and the lower frame 22 are made of tracks (grooved steel) and are arranged at both ends (upper and lower ends) of the bearing wall 12 in the vertical direction (longitudinal direction). As can be seen from FIG. 2, the inner surfaces (grooves) of the upper frame 20 and the lower frame 22 are formed to have a width that can accommodate the upper and lower ends of the column 18, and columns are formed at the left and right ends of the upper frame 20 and the lower frame 22. The upper and lower ends of 18 are respectively inserted. Then, the flange 26 of the column 18 and the flanges 28 of the upper frame 20 and the lower frame 22 are fixed (fixed) with a drilling tapping screw (hereinafter simply referred to as “screw”) 30.
[0016]
Returning to FIG. 1, the inter-column 24 is composed of one stud, and is arranged at approximately the center of the two columns 18. Similarly to the column 18, the upper and lower end portions of the intermediate column 24 are also inserted into the approximate centers of the upper frame 20 and the lower frame 22, and are fixed by screws 30.
[0017]
The gusset plate 10 has a thickness of about 0.8 to 1.6 mm, as in the case of the structural members such as the columns 18 such as the lip channel steel and the channel steel constituting the steel house, the upper frame 20 and the lower frame 22. It consists of a steel plate having As shown in FIG. 3, one corner of the gusset plate 10 is cut to form, for example, a rectangular (in this embodiment, rectangular) cutout 32. The lateral width A of the notch 32 is set to be approximately the same as or slightly larger than the width of the pillar 18 (the width of the two flanges 26), and the longitudinal width B of the notch 32 is the height of the upper frame 20 and the lower frame 22. It is set to be approximately the same as or slightly larger than the width (width of the flange 28). The gusset plate 10 is attached to the corner 14 of the load bearing wall 12 as described above. Specifically, as can be clearly understood from FIG. 2, the lateral end (lateral end) 34 on the side where the notch 32 is formed is brought into contact with the outer surface of the flange 26 of the column 18 and fixed with a screw 30. Is done. Further, a vertical end (vertical end) 36 on the side where the notch 32 is formed is brought into contact with the inner surface of the flange 28 of the lower frame 22 (or the upper frame 20), and is fixed by the screw 30.
[0018]
Returning to FIG. 1, a pair of braces 16 made of a strip-shaped steel plate are attached to the gusset plate 10 attached to the corner 14 of the bearing wall 12. Specifically, the brace 16 is disposed so as to connect the gusset plates 10 located diagonally to the load-bearing wall 12, that is, disposed on the hook, and the end of the brace 16 is screwed 30 with the outer surface of the gusset plate 10. Fixed to.
[0019]
When attaching the gusset plate 10 to the corner 14 of the load bearing wall 12, for example, the lateral end 34 is set so that the notch 32 is positioned at the joint between the column 18 and the upper frame 20 (or the lower frame 22). While arrange | positioning at the outer surface side of the pillar 18, the vertical direction edge part 36 is inserted in the groove | channel of the upper frame 20 (or lower frame 22). Next, positioning is performed so that the end edge of the lateral end portion 34 and the outer surface of the column 18 (the lip 38 of the outer stud 18a) substantially coincide with each other in the attached state. Subsequently, the lateral end 34 is brought into contact with the outer surface of the column 18 and the screw 30 is driven into a predetermined position from the outer surface side. Then, the vertical end portion 36 is brought into contact with the inner surface of the flange 28 of the upper frame 20 (or the lower frame 22), and the screw 30 is driven into a predetermined position from the outer surface side.
[0020]
In this way, when the gusset plate 10 is attached to the corner 14 of the load bearing wall 12, the outer surface of the column 18 on the side to which the gusset plate 10 is attached and the upper frame 20 (or the lower frame 22 on the side to which the gusset plate 10 is attached). ) Is provided on the same plane, the vertical end portion 36 has an upper frame 20 (or a lower frame 22) with respect to the horizontal end portion 34 fixed to the outer surface of the column 18. ) Is slightly curved (deformed) on the inner surface side of the flange 28.
[0021]
That is, in such an attachment structure of the gusset plate 10, a step is formed on the gusset plate 10, as can be seen from FIG. Specifically, a part of the back surface 40 of the gusset plate 10 is in contact with the outer surface of the column 18 and a part of the surface 42 of the gusset plate 10 is in contact with the inner surface of the upper frame 20 or the lower frame 22 (flange 28). Therefore, a step corresponding to the thickness of the gusset plate 10 is formed on the gusset plate 10.
[0022]
In FIG. 4, the screw 30 is omitted for easy understanding. In FIG. 4, the column 18, the upper frame 20, and the lower frame 22 are described with the left side as the outer surface and the right side as the inner surface, and the gusset plate 10 has the left main surface as the surface 42 and the right side. The main surface is described as the back surface 40. However, when the gusset plate 10 is attached to the lower left and upper right corners 14 of the load bearing wall 12 shown in FIG. 1, the front surface 42 and the rear surface 40 shown in FIG. 4 are reversed. That is, a part of the front surface 42 is brought into contact with the outer surface of the column 18 and a part of the rear surface 40 is brought into contact with the inner surface of the upper frame 20 or the lower frame 22 (flange 28).
[0023]
Therefore, for example, when the thickness of the brace 16 is substantially the same as the thickness of the gut plate 10, the outer surface of the lateral end 34 of the gusset plate 10 and the outer surface of the brace 16 are substantially flush with each other as shown in FIG. Provided on top. That is, the thickness of the brace 16 can be absorbed by such a mounting structure of the gusset plate 10.
[0024]
According to this embodiment, since the thickness of the brace 16 is absorbed by the step formed on the gusset plate 10, the protrusion generated in the local portion of the bearing wall 12 due to the overlapping of each member can be reduced as much as possible. For this reason, as shown in FIG. 4, when a wall plate 44 (such as a structural plywood or a plaster board) is attached to the load bearing wall 12, the wall plate 44 is less likely to be uneven or bent, It is possible to prevent cracks from occurring.
[0025]
In addition, since the number of adjustment plates used to eliminate the step due to protrusion when the wall plate 44 is attached can be reduced, the wall plate can be attached relatively easily. That is, on-site workability is improved.
[0026]
Further, since only the notch 32 is formed in the gusset plate 10, the manufacturing cost is not significantly increased.
[0027]
In the above-described embodiment, the rectangular notch 32 is formed, but the shape of the notch 32 is not limited to this. For example, it may be formed in a triangular shape as shown in FIG. 5 (A), or may be formed in a substantially quarter ellipse shape as shown in FIG. 5 (B). When the cutout 32 is formed in such a shape that the cut surface does not change suddenly, stress concentration due to the cutout 32 can be reduced. That is, it is possible to prevent the gusset plate 10 from being damaged.
[0028]
Further, as shown in FIGS. 6 (A) and 6 (B), a locking portion 46 that continuously rises from the edge of the lateral end portion 34 of the gusset plate 10 toward the column 18 may be formed. Good. In this case, as shown in FIG. 7, when the gusset plate 10 is attached to the corner portion 14 of the load bearing wall 12, the locking portion 46 is locked to the outer side surface of the column 18 so that the positioning is easily performed. be able to. That is, workability can be further improved.
[0029]
However, since the gusset plate 10 is attached with at least one of the upper and lower sides and the right and left sides in different directions depending on the corner 14 to which the gusset plate 10 is attached, the rising direction is different as shown in FIGS. 6 (A) and 6 (B). It is necessary to prepare two types of gusset plates 10 on which the locking portions 46 are formed.
[0030]
In this case, needless to say, the shape of the notch 32 may be changed as appropriate.
[Brief description of the drawings]
FIG. 1 is a front view showing a bearing wall to which an embodiment of the present invention is applied.
FIG. 2 is a perspective view showing a part of a load bearing wall of the embodiment in FIG. 1;
FIG. 3 is a front view showing a gusset plate of FIG. 1 embodiment;
4 is an illustrative view showing a part of a load bearing wall of FIG. 1 embodiment; FIG.
FIG. 5 is a front view showing another example of the gusset plate of the present invention.
FIG. 6 is an illustrative view showing another example of the gusset plate of the present invention.
7 is a perspective view showing a part of a load-bearing wall to which the gusset plate shown in FIG. 6 embodiment is applied. FIG.
FIG. 8 is a front view showing a load bearing wall to which a conventional gusset plate is applied.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Bearing wall gusset plate 12 ... Bearing wall 14 ... Corner 16 ... Breath 18 ... Column 20 ... Upper frame 22 ... Lower frame 30 ... Drilling tapping screw 32 ... Notch 34 ... Lateral end 36 ... Longitudinal end 44 ... Wall plate 46 ... Locking part

Claims (3)

A gusset plate structural member about the same consists of steel plate with a thickness bearing wall constituting the and the steel house attached to the corners of the bearing wall to mount the breath in steel house,
Forming a notch at a location corresponding to a joint portion between the pillar of the load-bearing wall and a frame in which the end of the pillar is inserted perpendicularly to the inner surface ;
The gusset plate has a lateral end on the side where the notch is formed, abutting the outer surface of the column, and a longitudinal end inserted into the inner surface of the frame, thereby forming a step in the gusset plate. Wall gusset plate. The gusset plate of a load bearing wall according to claim 1, further comprising a locking portion that is provided continuously from an edge on the side where the notch is formed and that is locked to an outer surface of the column. A structure for mounting a gusset plate of a load bearing wall using the gusset plate of a load bearing wall according to claim 1 or 2,
The lateral end of the gusset plate on the side where the notch is formed is fixed to the outer surface of the column,
A structure for attaching a gusset plate of a load bearing wall, wherein a longitudinal end portion of the gusset plate on the side where the notch is formed is fixed to an inner surface of the frame.

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