JPS6149075A - Earthquake-proof wall - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a shear wall that is particularly useful when incorporated into tall buildings with irregular plan plans.

[Conventional technology]

Due to restrictions such as daylighting, high-rise residential buildings located in very steep areas are now required to have irregularly shaped floor plans without an axis of symmetry, as shown in FIG. 7. In such an irregularly shaped plan, the rigidity of the frame has a directionality, so this directionality must be carefully considered before adopting earthquake-resistant walls.

However, when trying to adjust the rigidity of a conventional XY-direction (orthogonal) earthquake-resistant wall by considering directionality, the following problems occur. That is, X.

When the rigidity and yield strength in the Y direction are increased, the rigidity and yield strength in the U and Y directions also increase at the same time. Therefore, it would be unreasonable to want to adjust the stiffness only in a certain arbitrary direction.

[Problem that the invention seeks to solve]

As mentioned above, in the past, there was no earthquake-resistant wall that could rationally and easily adjust the rigidity in each direction, and therefore it was difficult to realize various irregular plan plans.

An object of the present invention is to provide a 11-proof wall that can rationally and easily adjust the stiffness fA in any direction.

[Means for solving problems]

As shown in the figure, the II-resistant wall of the present invention is constructed by connecting one vertical wall 1 and 2 to form a horizontal section rli[, shaped wall 3, and this L-shaped wall 3. are arranged at intervals so that the corners 4 face each other, and these assembled walls 3
, 3 are connected by a vertical connecting wall 5.

In this case, in the illustrated example, the connecting wall 5 is on the extension of the bisector l of the angle α formed by the vertical walls 1 and 2 of each set of walls 3, but depending on the direction of rigidity adjustment, the connecting wall 5 is The orientation may be changed as appropriate.

[Effect]

In the earthquake-resistant wall of the present invention, when an external force is applied in the X direction shown in FIG. 7, the projected length of the vertical wall 1.1 and the connecting wall 5 in the When an external force is applied, the projected length of the vertical wall 2゜2 and the connecting wall 5 in the Y direction will receive that external force, and if an external force in the Y direction is applied, the connecting wall 5 and the vertical The projected length of walls 1 and 2 in the Y direction will not receive the external force, and if an external force in the U direction is applied, the projected length of vertical walls 1 and 2 in the U direction will not receive that external force. stop. In this way, the building has elements that can absorb and stop external forces in almost all directions, so by adjusting the various wall materials, thickness, length, etc. by 1%11, sufficient rigidity can be achieved against external forces in all directions. Can be reasonably secured.

For example, in the case of a V-direction-oriented type that increases the rigidity in the Y-direction, the connecting wall 5 may be made thicker as shown in Figure 2 (a), but in such a case, the X and Y directions will be slightly affected. This makes it possible to rationally adjust the rigidity of the object while producing sound in the U direction. Figure 2(b).

(0) shows examples of the X-direction-oriented type and the U-direction-oriented type, respectively; the former makes the vertical wall 1 thicker, and the latter makes the vertical walls 1 and 2 thicker.

〔Example〕

FIG. 3 is a plan view of an embodiment in which the present invention is applied to a high-rise residential building having an M1-L-shaped earthquake-resistant wall plan. In the building of this embodiment, the pillars 6 are aligned in each side direction of the L-shape, that is, in the X direction and the Y direction, and a beam 7 is connected to each column 6, forming a frame (hereinafter referred to as a frame) as a structure. is configured. A seismic wall M is built into a part of the corner of the building.

That is, this earthquake-resistant wall M is a vertical wall 1 that constitutes a set of walls 3.
. And this shear wall M, both sets A3.3
are integrally incorporated into the frame so as to be symmetrical along the direction of each beam 7 of frames A and B forming the left wing of the building and the cloth wiper.

Next, it will be explained how advantageous the building of this example is compared to the case where the shear wall M is not included.

Here, we will discuss the results of a study taking as an example the case where a horizontal external force acts in the X direction in FIG. 3 as indicated by the arrow P.

When we investigated the vertical displacement of nodes on the bed surface, we obtained the results shown in Figures 1 and 5. Figure 1 shows the case without a shear wall; Figure S shows the case with a shear wall M;
In the figure, the one-dot chain line is the theoretical neutral axis for keeping the floor flat (the theoretical neutral axis when the floor is a completely flat rigid body), and the dotted line is the actually obtained neutral axis.

As can be seen from these figures, in a building without a shear wall M, the neutral axis is far away from the axis proposed by the floor planarization theory. It can also be seen that the integrity of frame C and frame D is extremely small.

On the other hand, when the resistance wall M is included, the neutral axis is close to the axis proposed by the floor plane maintenance theory, so in fact, the integrity of frames C and D increases, and the difference in vertical deformation of each node It can be seen that it has become smaller.

FIGS. 6(&) to (e) show examples of plan plans of other buildings to which the iIl-resistant walls of the present invention are applied. In all of these four buildings, the shear wall M is placed at a part of the corner of the building. 4.In one aspect of this plan, the integrity of the frames C and D is small, but the inclusion of the earthquake-resistant wall M is intended to improve the integrity.

〔Effect of the invention〕

As explained above, the earthquake-resistant wall of the present invention is constructed by connecting two L-shaped dog-shaped walls with a connecting wall so that the walls can absorb forces in various directions through mutual action. wall materials,
Rigidity in any direction can be adjusted by adjusting thickness, length, etc.
I4 adjustment can be done easily.

Therefore, by applying the present invention to buildings having various irregular plan plans, which have been considered difficult to realize in the past, extremely rational designs can be made, and the present invention can be easily realized.

[Brief explanation of drawings]

Figure 1 is a perspective view of the '111-resistant wall of the present invention, Figure 2 (&)
. (b) and to) show an example of rigidity adjustment in the shear wall of the present invention, Fig. 3 is a plan view showing an example of a building to which the shear wall of the present invention is applied, and Figs. 9 and S show earthquake resistance This is a vertical displacement diagram of nine-story floor nodes obtained by comparing the presence and absence of walls,
Fig. 9 is a diagram of a case without a shear wall, Fig. 5 is a diagram of a case with a W-proof wall, and Figs. FIG. 7 is a diagram for explaining the prior art. M... Earthquake-resistant wall of the present invention, 1.2... Vertical wall, 3... Cape wall, 4... Corner, 5...
...Connecting wall. Ward

Claims (1)

[Claims] Two vertical walls are connected to form a wall with an L-shaped horizontal cross section, and two L-shaped walls are arranged at intervals such that their corners face each other, and the corners of these walls are A seismic wall characterized by connecting sections with vertical connecting walls.