JP2001200602A - Dry earthquake resisting wall coping with composite structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To apply an earthquake resisting wall to a flexible frame having a girder of a steel structure by making the earthquake resisting wall disposed in a plane of structure surrounded with column-beams flexibly behave to the external force and easily adjusting the rigidity and strength, and facilitate handling and fitting to the frame. SOLUTION: Plural dry earthquake resisting walls 3 free from a column 1 are disposed at spaces between upper and lower girders 2, 2, the upper end part of each dry earthquake resisting wall 3 is bound to the girder 2 of the upper floor by a high tension bolt 4 or the like, and the lower end part is fixed to the girder of the lower floor through a connecting member 5. The connecting member 5 is formed by a flat bar, a bolt and the like, the upper end part thereof is buried and fixed in the dry earthquake-resisting wall, the lower end part is fixed to a connecting hardware 6 by a bolt or the like, and the middle part is provided with a free space 7 for free movement, thereby providing such softness and easiness of adjustment to apply the girders to a flexible frame of a steel structure.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mixed-structure dry-type earthquake-resistant wall applicable to a structure such as a generally soft building in which a girder is made of steel members.

[0002]

2. Description of the Related Art In the conventional construction field, when a girder is a steel structure, earthquake-resistant walls are rarely used, and even if it is used, a formwork is installed on site and concrete is cast in place. Often becomes a shear wall. In addition, dry-type shear walls with pre-slits have also been developed for steel structures. It should be noted that the dry type does not mean that concrete is poured on site, but that it is manufactured in advance in a factory or the like, and is attached on site with bolts or the like.

[0003]

However, the conventional in-situ cast-in-place wall is integrally attached to a column or a girder, and has much higher rigidity and strength than a steel frame. It cannot be distributed in a well-balanced manner and is difficult to fit into soft frames made of steel beams.

A conventional dry-type earthquake-resistant wall provided with slits in advance is made of one piece, and covers one construction surface surrounded by columns and beams with one sheet, so that it is large and heavy, and is difficult to handle. . Further, since the rigidity and strength of the dry type earthquake-resistant wall are adjusted by reinforcing the slit and the remaining portion, it is not possible to finely adjust the rigidity and strength.

[0005] As described above, the conventional earthquake-resistant wall does not have the flexibility and the ease of adjustment that the girder can adapt to the soft frame of the steel structure. Limited to things. The present invention has been made to solve such a conventional problem, and an object of the present invention is to make it possible for a shear-resistant wall to behave softly against an external force, and to easily adjust its rigidity and strength. It is an object of the present invention to provide a dry-type earthquake-resistant wall for a mixed structure, in which the earthquake-resistant wall can be applied to a steel frame having a soft girder structure, and which can be easily handled and mounted on the frame.

[0006]

As shown in FIG. 1, a dry-type earthquake-resistant wall compatible with a mixed structure according to the present invention is provided with a dry-type earthquake-resistant wall that is not connected to a pillar between upper and lower beams. One end of the portion is fastened to the beam, and the other end is fixed to the beam via a connecting member (claim 1). Here, the mixed structure means a structure using a steel structure for the beam and a reinforced concrete structure or a steel reinforced concrete structure for the column. Usually, the dry type earthquake-resistant wall is provided between the upper and lower girders. Further, as shown in FIG. 1, it is preferable that the upper end of the dry type earthquake-resistant wall is fixed to a large beam on the upper floor with a high tension bolt or the like, and the lower end is fixed to a large beam on the lower floor with a connecting member.

One dry-type earthquake-resistant wall may be provided on one construction surface surrounded by left and right columns and upper and lower girders.
As shown in (2), it is preferable to arrange a plurality of sheets between the columns without connecting them to each other (claim 2). In the present invention, a dry-type earthquake-resistant wall is not made by pouring concrete on site, but is manufactured in advance in a factory or the like and attached with bolts or the like on site.

It is preferable that a plurality of connecting members are disposed at intervals in the beam longitudinal direction with respect to one dry-type earthquake-resistant wall. For example, as shown in FIGS. Using a rod or the like, one end is embedded and fixed in the end of the dry-type earthquake-resistant wall, and the other end is fixed to a beam fitting (such as a gusset plate) with a high-tensile bolt or the like. A space is provided between the dry seismic walls (claim 3).
The space is a free space in which the connecting member can freely move (deform), and can be formed by providing a gap between the dry-type earthquake-resistant wall and the floor. It is preferable to form a free space having a height h by providing the above.

The connecting member is not limited to the flat bar type or the bolt type described above, and as shown in FIG. 4, the connecting member is composed of two connecting bars (reinforcing bars, etc.), and one connecting bar is used. The lower end is buried in the lower end of the dry-type earthquake-resistant wall on the lower floor, and the other connecting rod is buried in the lower end of the dry-type earthquake-resistant wall on the upper floor. (A sleeve joint, etc.), and a space may be provided between the dry-type earthquake-resistant wall on the upper floor and the connecting rod (claim 4).

In the above configuration, the horizontal force generated by the earthquake is partly borne by the dry-type shear wall, and the stress of the columns and beams as the frame is reduced. Since the dry-type earthquake-resistant wall of the present invention has one end fixed to the beam and the other end fixed by a connecting member having a high degree of freedom, the rigidity and strength of the dry-type earthquake-resistant wall are determined by the connecting member, A soft earthquake-resistant wall that can follow a soft frame is created. Furthermore, since the dry-type earthquake-resistant wall is divided into a plurality of pieces, it individually resists an external force, so that it behaves softer than a single-section earthquake-resistant wall and is easily adapted to a soft frame. In addition, the flat bars and bolts of the connecting members are designed to receive the axial force and the shear force due to the horizontal force acting on the entire earthquake-resistant wall and to withstand the rigidity stress. The rigidity and strength of the dry-type shear wall can be easily adjusted by the diameter and size and the length that is free due to the free space. Further, by dividing the dry-type earthquake-resistant wall into a plurality of pieces, handling and attachment to the frame become easy.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on an embodiment shown in the drawings. FIG. 1 shows an example of an arrangement of a dry-type earthquake-resistant wall according to the present invention. FIG. 2 shows a first embodiment of a dry-type earthquake-resistant wall according to the present invention, in which a connecting member is an example of a flat bar type. FIG. 3 shows a dry-type earthquake-resistant wall according to a second embodiment of the present invention, in which a connecting member is a bolt type. FIG.
Is a third embodiment of the dry-type earthquake-resistant wall of the present invention, and is an example in which a connecting member is a two-piece rebar rod type.

In FIG. 1, a dry-type earthquake-resistant wall for a mixed structure according to the present invention has a construction surface surrounded by two columns 1, 1 made of steel or RC and upper and lower steel girders 2, 2. The dry-type earthquake-resistant walls 3 divided into three to five pieces in the longitudinal direction of the beam are arranged independently of each other, and the upper end of each of the dry-type earthquake-resistant walls 3 is fastened to the upper beam 2 with high-tensile bolts 4. The lower end of the earthquake-resistant wall 3 is fixed to the lower girder 2 via a connecting member 5 and a connection fitting 6 which can be freely moved.

A gap is formed between the column 1 and the dry-type earthquake-resistant wall 3 and between the dry-type earthquake-resistant walls 3 and 3 so that they are not connected to each other, and the dry-type earthquake-resistant wall 3 and the floor 8 (or the girder 2) are not connected to each other. A gap is also formed between them so that each dry-type earthquake-resistant wall 3 can individually resist external force. Also, the upper part of the connecting member 5 is embedded and fixed in the lower end of the dry-type earthquake-resistant wall 3, and the lower part of the connecting member 5 is fixed to a connecting fitting 6 fixed on the lower girder 3 with bolts or the like. A space 7 having a height h is provided between the section and the dry-type earthquake-resistant wall 3 so that the connecting member 5 can move (deform) in the free space 7. The plurality of connecting members 5 and the like are provided at a predetermined interval in the beam longitudinal direction with respect to one dry-type earthquake-resistant wall 3.

In the first embodiment shown in FIG. 2, a flat bar 10 is used as a connecting member, and a gusset plate 11 is used as a connection fitting. The portion of the girder 2 to which the connecting member / connector is attached is reinforced with a stiffener 2a, and a gusset plate 11 is erected on the upper surface of the upper flange of this girder parallel to the longitudinal direction of the beam and fixed by fillet welding or the like. ing.

The flat bar 10 has an upper wide plate portion 10a and a lower narrow plate portion 1 parallel to the beam longitudinal direction.
0b, the upper wide plate portion 10a is buried and fixed in the dry-type earthquake-resistant wall 3, and the connecting plate portion 10c attached to the lower end of the narrow plate portion 10b by welding or the like is attached to the gusset plate 11 and the high tension bolt 12 It is fixed with.
The enlarged lower end of the narrow plate portion 10b may be directly bolted to the gusset plate 11. In addition, the bolt holes 13 of the high tension bolts 12 in the flat bar 10 or the gusset plate 11 are loose holes so as to absorb errors in the installation of the dry-type earthquake-resistant wall 3.

The free space 7 at the lower end of the dry-type earthquake-resistant wall 3 is
It is formed by embedding a sheath tube (sheath tube) 14 or the like at the time of manufacturing the dry type earthquake-resistant wall 3 so that the narrow width plate portion 10b does not adhere to concrete. Due to the gap under the sheath tube 14 and the dry type earthquake-resistant wall 3, the narrow plate portion 1 is placed on the floor 8.
Thus, a free space 7 having a height h is formed so that Ob can freely deform.

Reinforcing bars 3a are double-laid in the dry-type earthquake-resistant wall 3, and a flat bar 10 is buried between the reinforcing bars 3a, 3a for a predetermined length, and buried and fixed with a sufficient fixing force. Further, a flange portion 3 b projecting in the thickness direction of the wall is provided at an upper portion of the dry type earthquake-resistant wall 3, and the flange portion 3 b is fastened to a lower flange of the large beam 2 by a high tension bolt 4.

At the time of construction, a dry-type earthquake-resistant wall 3 in which a flat bar 10 is previously buried and mounted at a lower portion is inserted between the upper and lower girders 2 and 2 from the lateral direction, and the upper end is attached to the upper girder 2 by a high tension bolt 4. Then, the lower end of the flat bar 10 may be fixed to the gusset plate 11 with the high tension bolts 12. After that, the floor 8 is cast, and the floor 8 and the dry type
The flexible heat insulating material 15 and the like are disposed in the gaps between them.

Next, in the second embodiment shown in FIG. 3, a bar 20 such as a bolt member or a reinforcing bar and a connecting plate 21 are used as connecting members. The upper part of the bar 20 is embedded and fixed in the lower end of the dry-type earthquake-resistant wall 3, the connecting plate 21 is attached to the lower part of the bar 20 and fixed by fillet welding or the like, and the connecting plate 21 is attached to the gusset plate 22. And is fixed with a high tension bolt 12. This gusset plate 22
A pair is arranged at intervals in the longitudinal direction of the beam, and the bar 20 can be positioned therebetween. The intermediate portion of the bar 20 can be freely deformed in the free space 7 having the height h.
Other configurations are the same as the flat bar type of FIG.

Next, in a third embodiment shown in FIG. 4, a W-beam 30 made of a pair of channel steels is used for a girder, and bar members 31 and 32 such as rebar rods divided into two for a connecting member and a sleeve joint. 33 are used. On both sides at the upper end of the dry type earthquake-resistant wall 3, the channel steel 30a of the W beam 30 is arranged back to back and fixed with the penetrating bolts and nuts 34, and the lower end of the lower bar 31 is attached to the dry floor of the lower floor. It is embedded and fixed in the upper end of the wall 3, and the upper part of the bar 31 projects upward by a predetermined length.

On the other hand, a sheath pipe 14, a sleeve joint 33, and an upper bar 32 are buried in the lower end of the upper floor dry-type earthquake-resistant wall 3 at a position corresponding to the lower bar 31 in order from the bottom. I have. The lower bar 31 is inserted into the sleeve joint 33 into which the lower end of the upper bar 32 is inserted, and the grout 35 is inserted between the sleeve joint 33 and the bars 31, 32.
, The upper and lower bars 31 and 32 are connected and fixed to be integrated. A rubber packing 36 is disposed between the sleeve joint 33 and the sheath tube 14 to prevent the grout material 35 from flowing out. Other configurations are the same as those of the flat bar type / bolt type shown in FIGS.

FIG. 4 (a) shows an example in which the lower end of the dry-type earthquake-resistant wall 3 is located on the floor 8, and like the flat bar type / bolt type, the lower bar is placed on the floor 8. A free space 7 with a height h is formed so that the free space 31 can be freely deformed.
FIG. 4B shows an example in which the dry-type earthquake-resistant wall 3 is buried in the floor 8, and a free space 7 having a height h is formed on a girder (W beam) 30.

At the time of construction, a lower bar 31 projects from the upper end of the dry-type earthquake-resistant wall 3 on the lower floor.
The upper wall of the dry-type earthquake-resistant wall 3 may be hung from above so that is inserted into the sleeve joint 33, and then a large beam (W-beam) 30 may be attached to the upper part of each dry-type earthquake-resistant wall 3.

FIGS. 5 to 8 show examples of comparison between the pure ramen structure and the structure with a dry-type earthquake-resistant wall of the present invention. FIGS. 5 and 6 show an office building, and FIGS. 7 and 8 show a shopping building. Is the case. As shown in FIGS. 6 and 8, a part of the horizontal force P (for example, 100 tons for one construction surface) caused by the earthquake is applied to the dry-type shear wall 3, so that the main frame (the concrete column 1 and the steel The cross section of the frame made of the large beam 2 made of steel can be reduced, and the cost can be reduced.

Further, according to the present invention, the dry type earthquake-resistant wall 3 has the upper end fixed to the upper beam 2 with the high tension bolt 4 and the lower end with the flat bar 10, the bar 20 or the bar 31 having a high degree of freedom.・ Since it is fixed at 32, it is possible to provide a dry-type earthquake-resistant wall that behaves softly against external force, and further divides the dry-type earthquake-resistant wall 3 into a plurality of pieces to individually resist against external force. It behaves more softly than a single-plane shear wall. In addition, the rigidity and strength of the dry-type earthquake-resistant wall can be easily adjusted by the diameter and size of the flat bar 10 and the like and the length that is free due to the space 7. It can be applied. Furthermore, since the dry-type earthquake-resistant wall 3 is divided into a plurality of sheets, the weight is lighter than that of a single earthquake-resistant wall of one structure.
There are advantages such as easy handling and mounting on the frame.

[0026]

Since the present invention has the above-described configuration, the following effects can be obtained. (1) Since one end of the dry-type earthquake-resistant wall is fixed to the beam and the other end is fixed by a connecting member having a high degree of freedom, the dry-type earthquake-resistant wall can behave softly against external forces, Furthermore, since the dry-type earthquake-resistant wall 3 is divided into a plurality of pieces, it individually acts against external force, so that it behaves more softly than one piece of one-faced earthquake-resistant wall. The rigidity and strength of the dry-type shear wall can be easily adjusted by the length of the free-form shear wall, so that the shear wall can be applied to a steel frame having a soft steel beam.

(2) In a generally soft building in which a girder is made of steel, it is possible to reduce stress on columns and beams of a main frame and reduce costs. (3) Dividing the dry-type earthquake-resistant wall into multiple pieces facilitates handling and installation on the frame.

[Brief description of the drawings]

FIG. 1 is a front view showing an example of arrangement of a dry-type earthquake-resistant wall of the present invention.

FIG. 2 shows a first embodiment of the dry type earthquake-resistant wall of the present invention (the connecting member is a flat bar type), wherein (a) is a partial cross-sectional front view, (b) is a longitudinal cross-sectional view, and (c). 3A is a partially enlarged front view of FIG. 3A, and FIG. 3D is a partially enlarged cross-sectional view of FIG.

3A and 3B show a dry-type earthquake-resistant wall according to a second embodiment of the present invention (the connecting member is a bolt type), wherein FIG. 3A is a longitudinal sectional view, FIG. 3B is a partial sectional front view, and FIG. (A) is a partial enlarged sectional view, (d) is a partial enlarged front view of (b).

FIGS. 4A and 4B are longitudinal sectional views showing a dry-type earthquake-resistant wall according to a third embodiment of the present invention (a connecting member is divided into two parts), wherein FIG. 4A shows an example in which the lower end of the earthquake-resistant wall is on the floor, and FIG. The figure shows an example in which the lower end of a shear wall is buried in the floor.

5A is a plan view and FIG. 5B is a front view showing an example in which a dry-type earthquake-resistant wall is applied to an office building.

6 is a cross-sectional view and a graph comparing the cross section of members and the horizontal force load in the office building of FIG. 5 between the pure ramen structure and the structure with the dry-type earthquake-resistant wall.

7A is a plan view and FIG. 7B is a front view showing an example in which a dry-type earthquake-resistant wall is applied to a shopping building.

8 is a cross-sectional view and a graph comparing the cross section of members and the horizontal force load in the shopping building of FIG. 7 between a pure ramen structure and a structure with a dry-type earthquake-resistant wall.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Column 2 ... Girder 3 ... Dry type earthquake-resistant wall 3a ... Reinforcing bar 4 ... High tension bolt 5 ... Connection member 6 ... Connection metal 7 ... Free space 8 ... Floor 10 ... Flat bar (connection member) ) 10a wide plate portion 10b narrow plate portion 10c connecting plate portion 11 gusset plate (connection fitting) 12 high tension bolt 13 bolt hole 14 sheath tube 20 rod member (connecting member) 21 ... connecting plate (connecting member) 22 ... gusset plate (connecting bracket) 30 ... W beam (large beam) 30 a ... channel steel 31 ... lower bar (connecting member) 32 ... upper bar (Connecting member) 33 Sleeve coupling (Connecting member) 34 Through bolts and nuts 35 Grout material 36 Rubber packing

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme Court II (Reference) E04H 9/02 321 E04H 9/02 321B (72) Inventor Yukimasa Ogihara 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Inventor Akio Tomita 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Inventor Shigeo Watanabe 2-191-1, Tobita-Shi, Chofu-shi, Tokyo Kashima (72) Inventor Koichi Suzuki 2-19-1, Tobita-Shi, Chofu-shi, Tokyo MA11 MA12 MA13

Claims (4)

[Claims] 1. A dry-type earthquake-resistant wall not connected to a pillar is provided between upper and lower beams, one end of upper and lower ends of the dry-type earthquake-resistant wall is fastened to the beam, and the other end is connected via a connecting member. A mixed-type dry-type earthquake-resistant wall characterized by being fixed to a beam. 2. The dry-type earthquake-resistant wall according to claim 1, wherein a plurality of dry-type earthquake-resistant walls are provided between the columns without being connected to each other. 3. The connecting member has one end buried and fixed in the end of the dry-type earthquake-resistant wall, and the other end fixed to a beam fitting.
The dry-type earthquake-resistant wall according to claim 1 or 2, wherein a space is provided between an intermediate portion of the connecting member and the dry-type earthquake-resistant wall. 4. The connecting member is composed of two connecting rods,
One connecting rod is buried in the lower end of the dry-type earthquake-resistant wall on the lower floor, and the other end is buried in the lower end of the dry-type earthquake-resistant wall on the upper floor. The dry-type earthquake-resistant wall according to claim 1 or 2, wherein the portions are joined by a joint member, and a space is provided between the dry-type earthquake-resistant wall on the upper floor and the connecting bar.