JP2014118776A - Steel plate earthquake-resisting wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance a stiffening effect of a lattice member and improve beauty of a wall.SOLUTION: In a steel plate earthquake-resisting wall, an earthquake-resisting wall W is configured by arranging an oblique lattice-shaped lattice member 4 along a wall surface, in a frame K comprising a column 1 and a beam 2. The lattice member 4 is configured by providing a plurality of oblique materials 4A in a crossing state. The oblique materials 4A are stiffened by fixing a steel plate 5 along the wall surface to at least crossing parts of the oblique materials 4A. A wall part, which is not provided with the steel plate 5, is configured as a window part M freely enabling seeing-through in a wall thickness direction.

Description

  The present invention relates to a steel plate seismic wall in which a seismic wall is configured by arranging diagonal lattice members along a wall surface on a frame composed of columns and beams.

  Conventionally, as this type of steel plate earthquake resistant wall, as a lattice member, a metal strip is provided in an oblique lattice shape with the width direction along the wall thickness direction, and in the lattice space surrounded by the metal strip, on the outer periphery There was one in which a glass block was fitted in a state where the buffer elastic body was positioned, and the displacement in the thickness direction of the metal strip was suppressed on the outer peripheral surface of the glass block to prevent buckling ( For example, see Patent Document 1).

JP 2006-257654 A (FIGS. 1 and 2)

According to the conventional steel plate earthquake-resistant wall described above, the metal strip is suppressed in the thickness direction by the glass block, but between the metal strip and the glass block, the impact on the glass block is reduced. Since the buffer elastic body is interposed between the two, the thickness deformation of the buffer elastic body cannot be avoided. Therefore, when a compressive axial force acts on the metal strip due to an external force due to an earthquake or the like, the metal strip will bend in the buckling direction, and stiffening to prevent the lattice members from buckling. Further improvement in the effect is desired.
Furthermore, since the lattice space surrounded by the metal strip is blocked by the glass block, it is filled with the metal strip and the glass block as a wall, and light can pass therethrough, but there is little change. There is a possibility that the appearance of a closed wall surface is lost and the aesthetics are impaired.

  Accordingly, an object of the present invention is to provide a steel plate earthquake resistant wall that solves the above-described problems, enhances the stiffening effect of the lattice member, and improves the aesthetic appearance as a wall.

  A first characteristic configuration of the present invention is a steel plate earthquake-resistant wall in which an oblique lattice-like lattice member is disposed along a wall surface on a frame composed of columns and beams, and the earthquake-resistant wall is formed. The member is configured by providing a plurality of diagonal members in an intersecting state, and a steel plate is fixed along a wall surface at least at an intersecting portion of the diagonal members to stiffen the diagonal member. The wall portion that is not provided with is provided as a window portion that is transparent in the wall thickness direction.

According to the first characteristic configuration of the present invention, a lattice member is configured by providing a plurality of diagonal members in an intersecting state, and a steel plate is fixed along a wall surface at least at an intersecting portion of the diagonal members. The rigidity of the diagonal member to which the steel plate is fixed can be improved.
Therefore, if the steel plate is provided over the entire length of the diagonal member including the intersecting portion, the rigidity of the entire diagonal member can be improved.
In addition, even if only the vicinity of the crossing portion (fulcrum portion) of the diagonal member is stiffened with a steel plate, the buckling length of the non-stiffening portion located between the fulcrum portions of the diagonal member is reduced. It becomes difficult to buckle even in the part, and the buckling strength of the diagonal member as a whole is improved.
As a result, the stiffening effect of the lattice member can be enhanced, and the seismic performance as a steel plate seismic wall can be improved.

  Moreover, since the wall portion not provided with the steel plate is configured as a window portion that can be seen through in the thickness direction of the wall, it is possible to secure a line of sight through the earthquake resistant wall and transmit light. By effectively arranging the steel plates, it is possible to finish the wall with a changed appearance, and to improve the aesthetics of the wall.

  That is, according to the first characteristic configuration of the present invention, the steel plate seismic wall having excellent seismic performance and aesthetics, which can enhance the stiffening effect of the lattice member and improve the aesthetics as a wall. Can be formed.

  According to a second characteristic configuration of the present invention, the seismic unit composed of the steel plate and the diagonal member of a set unit is arranged side by side along the wall surface, and the diagonal members of adjacent seismic units are connected to each other, There is a seismic wall.

According to the 2nd characteristic structure of this invention, when forming a steel plate earthquake-resistant wall, an operation | work can be implemented by making an earthquake-resistant unit into a component minimum unit. Therefore, if the seismic unit is formed so as to have a size and a weight that are easy to handle, for example, it is possible to carry it in on-site by hand and assemble it.
As a result, for example, in an existing building, it can be applied to seismic retrofit carried out while continuing its use, and the scope of application can be expanded.

  According to a third characteristic configuration of the present invention, the diagonal member includes a non-fixed portion to which the steel plate is not fixed.

According to the third characteristic configuration of the present invention, since the non-fixed portion to which the steel plate is not fixed is provided in the diagonal member, the non-fixed portion is stretched by the diagonal member alone without being constrained by the steel plate. Can be tolerated.
Therefore, the non-fixed part can be set as a place where plastic elongation is easy to deform against the tensile axial force acting on the diagonal member, and the seismic performance of the wall can be adjusted freely by selecting the physical properties and dimensioning of this non-fixed part. Can be done.
As a result, it is possible to adjust the seismic performance that can be expected in the seismic wall, and it is possible to improve design freedom.

Front view showing the installation situation of earthquake-resistant wall Front view of the main part showing the installation situation of the seismic wall III-III arrow view shown in FIG. Detailed front view showing the installation status of seismic units Seismic unit perspective view The front view which shows the installation situation of the earthquake-resistant wall of another embodiment The front view which shows the installation situation of the earthquake-resistant wall of another embodiment The perspective view of the seismic unit of another embodiment

  Embodiments of the present invention will be described below with reference to the drawings.

  1 and 2 show an embodiment of a steel plate earthquake resistant wall of the present invention (hereinafter simply referred to as an earthquake resistant wall W). The earthquake resistant wall W is a frame K composed of a reinforced concrete column 1 and a beam 2. It is provided in the inscribed state. Note that the frame K is not necessarily limited to a reinforced concrete structure, and may be a steel structure, a steel reinforced concrete structure, or a combination thereof.

In the present embodiment, the seismic wall W has a lattice-like lattice member 4 formed on the inner circumferential surface of the pillar 1 and the beam 2 constituting the frame K and formed on the wall surface 3 of the diagonal lattice. And a plurality of steel plates 5 are integrally provided on the lattice member 4 in a state in which the wall surface has a checkered pattern.
In addition, about the pattern formed in a wall surface with the steel plate 5, the above-mentioned checkered pattern is only an example, It can be set as various patterns by changing the shape of the steel plate 5, a dimension, and arrangement | positioning.

  Moreover, the concrete formation method of the earthquake-resistant wall W in the said embodiment forms the metal-made earthquake-resistant unit Y of the predetermined unit divided | segmented into the vertical direction and the horizontal direction of the wall beforehand, respectively, and these earthquake-resistant units Y are formed. A series of seismic walls W are formed by connecting them while being placed in the frame K.

  As shown in FIG. 5, the earthquake-resistant unit Y is configured by providing a rectangular steel plate 5 and a pair of diagonal members 4 </ b> A made of a metal strip integrated by welding in a crossed state on the back surface of the steel plate 5. is there.

The diagonal member 4 </ b> A is arranged such that its longitudinal direction is along the diagonal line of the steel plate 5, and its width direction is along the thickness direction of the steel plate 5, and the side edges are fixed to the steel plate 5 by welding.
Further, the length of the diagonal member 4A is set to be the same as (or substantially the same as) the length of the diagonal line of the steel plate 5, but the fixing position is about 1 / long along the diagonal line of the steel plate 5. It is set at a position shifted by about 4. Accordingly, as shown in FIG. 5, the pair of diagonal members 4A is fixed in a state in which about 1/4 of the entire length of the diagonal member 4A protrudes outward from the corner of the steel plate 5 along the diagonal line of the steel plate 5. Yes.
That is, the steel plate 5 and the diagonal material 4A are fixed only within a range of about 3/4 of the length of the diagonal material 4A, and are not fixed within a range of about 1/4. The portion of the diagonal material 4A that is not fixed to the steel plate 5 (about ¼ of the total length) is referred to as a non-fixed portion 4b.

Bolt holes h for connection with another seismic unit Y arranged adjacent to each other are formed at both ends of the diagonal member 4A.
As shown in FIG. 3 and FIG. 4, the connection plate 6 is arranged on both the front and back sides of both diagonal members 4 </ b> A and is fastened with bolts and nuts 7, as shown in FIGS. 3 and 4. Are connected together.
Incidentally, since the diagonal member 4A is shifted along the diagonal line of the steel plate 5, the thick portion where the connecting plate 6 is installed is hidden on the back surface of the steel plate 5, so that it is difficult to impair the aesthetics from the front side.

In this embodiment, the seismic units Y are arranged side by side so as to be two layers on the front and back of the seismic wall W, and the seismic units Y of both layers are connected together by a common connecting plate 6 extending over both layers. ing.
As described above, since the seismic wall W is divided into a plurality of thickness directions, the weight and bulk of the seismic unit Y itself as a setting unit are reduced and the handling is improved. Although it can be carried out efficiently, as the completed seismic wall W, the two layers of seismic units Y on the front and back sides are arranged, so that a sufficient amount of steel can be secured and the seismic performance can be improved.

  Further, for the orientation in the wall thickness direction of the earthquake-resistant unit Y, the steel plate 5 is located on the outer surface of the wall surface of the earthquake-resistant wall W, and the lattice member 4 is located on the inner side between both the steel plates 5. The lattice member 4 can be prevented from being exposed to the wall surface, and the aesthetics of the wall surface can be kept good.

Furthermore, the wall portion on which the steel plate 5 is not disposed becomes a window portion M penetrating the front and back of the wall. With this window portion M, the translucency of the wall can be ensured and air can be circulated.
In addition, although the window part M is comprised by the penetration space of the wall front and back in the said embodiment, a translucent board (for example, acrylic board) is provided in this window part M, and it can partition a wall front and back. It may be configured as follows.

The annular frame member 3 is provided with attachment portions 3A for fixing the diagonal members 4A of the corresponding earthquake-resistant unit Y at corresponding portions.
Therefore, the earthquake-resistant wall W integrated with the frame K can be constructed by attaching the earthquake-resistant unit Y group to the attachment portion 3A. That is, the diagonal members 4A of the respective earthquake-resistant units Y are mechanically arranged in series to constitute the lattice member 4, so that an efficient axial load on the lattice member 4 can be promoted.

Furthermore, since the lattice member 4 is stiffened by the fixed steel plate 5, not only the stress load against the tensile axial force but also the buckling can be prevented against the action of the compressive axial force. It can demonstrate high earthquake resistance as a wall.
Furthermore, since the non-fixed portion 4b is formed in the diagonal member 4A, the seismic performance of the entire seismic wall can be adjusted by positively utilizing the plastic deformation of the material in that portion.

According to the seismic wall W of this embodiment, it is possible to obtain seismic performance adjusted in accordance with the design and to improve the aesthetics of the wall.
In addition, by using an earthquake-resistant unit as a component part, it can be constructed in a weight and shape that is easy to handle, and not only when building a new building, but also when forming a earthquake-resistant wall on an existing frame (for example, earthquake-resistant repair) Each component can be easily carried on site and assembled, and the range of applicable building objects can be expanded.

[Another embodiment]
Other embodiments will be described below.

<1> The structure of the frame K is not limited to the reinforced concrete structure described in the previous embodiment. For example, the structure K may be a steel structure, a steel reinforced concrete structure, or a combination thereof. It can be applied to a wide range of building structures.

<2> The seismic wall W is not limited to the one configured using the plurality of seismic units Y described in the previous embodiment, and a single diagonal member 4A and a steel plate 5 are installed in the target frame K, respectively. Then, the earthquake resistant wall W may be constructed.
In the previous embodiment, the example in which the seismic wall W is formed by stacking the pair of the diagonal member 4A and the steel plate 5 in two layers in the wall thickness direction is described. However, the present invention is not limited to this configuration. Instead, for example, it may be a single layer or may be composed of three or more layers.

<3> The diagonal member 4A constituting the lattice member 4 is not limited to the strip described in the previous embodiment, and may be, for example, an H-shaped steel, an I-shaped steel, a grooved steel, an angle steel, a metal cylinder, or the like. It may be configured.

<4> The steel plates 5 are not limited to rectangular shapes dimensioned so as to form a checkered pattern on the wall surface as described in the previous embodiment. For example, as shown in FIG. A rectangular shape having a small dimension that does not intersect may be used. In this example, the diagonal material 4A portion exposed on the wall surface between the steel plate 5 and the steel plate 5 is configured as a non-fixed portion 4b. A wide opening area of the window can be secured, and a square dot pattern more varied than the checkered pattern can be formed, and the design of the wall can be improved.
Moreover, the single-piece | unit shape of the steel plate 5 is not restricted to the rectangular shape demonstrated by previous embodiment, For example, as shown in FIG. 7, the circular shaped steel plate 5 is employ | adopted, other polygons It may be a shape, an elliptical shape, or a shape combining them.

<5> The seismic unit Y is not limited to the one in which the diagonal member 4A is fixed while being shifted along the diagonal line of the steel plate 5 as described in the previous embodiment. For example, as shown in FIG. Both end portions of the material 4 </ b> A may be formed so as to match each corner portion of the steel plate 5. Also in this case, the range covering the entire length of the diagonal member 4A is not limited to being fixed to the steel plate 5, but a non-fixed portion 4b may be provided in part as shown in FIG.

  In addition, as mentioned above, although the code | symbol was written in order to make contrast with drawing convenient, this invention is not limited to the structure of an accompanying drawing by this entry. In addition, it goes without saying that the present invention can be carried out in various modes without departing from the gist of the present invention.

1 pillar 2 beam 4 lattice member 4A diagonal material 4b non-fixed part 5 steel plate M window part K frame W earthquake-resistant wall Y earthquake-resistant unit

Claims (3)

A steel plate seismic wall in which an oblique lattice-like lattice member is arranged along the wall surface to form a seismic wall on a frame composed of columns and beams,
The lattice member is configured by providing a plurality of diagonal members in an intersecting state,
At least at the intersection of the diagonal members, a steel plate is fixed along the wall surface to stiffen the diagonal members,
The wall portion not provided with the steel plate is a steel plate earthquake resistant wall configured as a window portion that is transparent in the wall thickness direction.   The seismic wall is configured by arranging seismic units composed of the steel plate and the diagonal member in a set unit along the wall surface and connecting the diagonal members of adjacent seismic units. Steel plate earthquake-resistant wall as described in 1.   The steel plate earthquake-resistant wall according to claim 1 or 2, wherein the diagonal member includes a non-fixed portion to which the steel plate is not fixed.

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