JPS5838812Y2 - Load-bearing wall structure - Google Patents

Description

[Detailed explanation of the idea] This invention relates to the structure of load-bearing walls.

The structure of a conventional load-bearing wall is shown in FIGS. 1 to 3.

That is, in the structure of the load-bearing wall shown in FIGS. 1 and 2, bolt holes 5 are provided in the leg plate 4 to which the column members (square pipes) 1, diagonal members 2, and cross members 3, which are the framework of the load-bearing wall body, are welded. on the other hand,
A bolt hole 5' is provided in an inverted T-shaped base 7 attached to a foundation 6, a connecting bolt 8 is passed through both bolt holes 5, 5', a spring washer 9 is interposed, and the bolt hole 5' is tightened with a nut 10.

7a is an anchor bolt.

In this way, this load-bearing wall fixes the leg plate 4 to the base 7 by the shear stress of the bolts 8.

However, when a horizontal force acts on a load-bearing wall, the column material 1
As a result of the axial force generated, the joint surface 4a between the leg plate 4 and the base 7 slips by the clearance of the bolt holes 5, 5', which has the drawback of increasing the amount of horizontal deformation of the load-bearing wall.

In addition, in order to eliminate this drawback, the structure of the load-bearing wall shown in FIG. The amount of horizontal deformation is suppressed by regulating the sliding of the legs of the column 1 during compression, but conversely, eccentric compressive force acts on the column 1 due to the action of the flange 7b, causing an out-of-plane bending moment. This has the drawback of inducing early buckling of the column material 1 and lowering the wall strength.

Therefore, the aim of this invention is to provide a construction of a load-bearing wall that is free from such drawbacks.

An embodiment of this invention is shown in FIGS. 4 to 7.

That is, the structure of this load-bearing wall is such that a flat auxiliary plate 12 is faced to the joint surface 4a of the leg plate 4, and the remaining three side surfaces a to C, excluding the lower end 13, are three-way welded to form an inverted T-shape. When the leg plate 4 is faced to the vertical wall plate of the upper stand 7 and the bolt 8 is fastened, the lower end surface 13 and the upper end surface of the vertical wall plate are in contact with each other.

In this case, first weld the auxiliary plate 12 to the leg plate 4, then insert the leg plate 4 into the notch 14 formed in the column 11 and weld it so that the auxiliary plate 12 comes out from the lower end of the column 11. .

Other parts are the same as those in FIGS. 1 and 2.

Now, when a horizontal force acts on the column material 11 of this load-bearing wall,
The deformation force of the leg plate 4 due to the compressive force generated in the column 11 is transferred from the column 11 through the leg plate 4 to the auxiliary plate 12.
Since the transmission is smoothly transmitted from
and the base 7 are deformed integrally.

In addition, the pillar material 1 due to the collision between the auxiliary plate 12 and the base 7
Since there is almost no eccentric effect on the column 11 outside the structural plane, there is no risk of buckling of the column 11.

On the other hand, since the auxiliary plate 12 is simply welded to the leg plate 4, the cost increase is small.

Furthermore, since three-way welding is performed on three side surfaces of the plate 12 except for the lower end surface 13, there is no problem in contact between the lower end surface 13 and the upper end surface of the vertical wall plate of the base 7.

As mentioned above, the structure of the load-bearing wall of this invention is that the leg plate is provided with an auxiliary plate, and the lower end surface of the auxiliary plate is in contact with the upper end surface of the vertical flat plate part of the foundation, thereby fixing the leg plate and the foundation. This has the effect of improving the resistance to horizontal forces acting on the wall and suppressing increases in the amount of horizontal displacement of the columns.

[Brief explanation of the drawing]

Figure 1 is a side view of a conventional load-bearing wall structure, Figure 2 is a front view thereof, Figure 3 is a side view of another conventional load-bearing wall structure, and Figure 4 is a side view of a conventional load-bearing wall structure.
The figure is a side view of the structure of a load-bearing wall in one embodiment of the invention, FIG. 5 is a front view thereof, FIG. 6 is a perspective view thereof, and FIG. 7 is a detailed front view of FIG. 5. 1.11...Column material (framework of load-bearing wall body), 4.
... Leg plate, 7 ... Base, 8 ...
... Bolt, 12 ... Auxiliary plate, 13.
...Lower end surface.

Claims (1)

[Scope of utility model registration request] An auxiliary plate is welded onto the leg plate that is vertically attached to the lower end of the cylindrical column of the load-bearing wall so as to be located at the axis of the cylindrical column, and the lower end surface of the auxiliary plate is attached to the cylindrical column. The leg plate of the column is suspended from the lower end of the column, and the leg plate of the column is fixed to the vertical flat plate of the base, and the lower end surface of the auxiliary plate is brought into contact with the upper end of the vertical flat plate of the base. The structure of the load-bearing wall.