JPH0813650A - Connecting structure of earthquake-resisting wall - Google Patents

Abstract

PURPOSE:To conduct the manufacture of an earthquake-resisting wall and the connection operation of the earthquake-resisting wall and a beam and the beam and a column easily. CONSTITUTION:Beams 3, 4 consisting of two steel materials 3A, 3B, 4A, 4B are held at the upper end sections 7a, 8A and lower end sections 7b, 8B of connecting plates 7 and brace plates 8 incorporated into the PC wall body 6 of an earthquake-resisting wall 5. The steel materials of the beams 3, 4 and the upper end sections and lower end sections of the connecting plates 7 and the brace plates 8 are joined by bolts, and the upper end and lower end of the wall body 6 are formed along the beams 3, 4. Connecting plates 1A, 2A protruded from columns 1, 2 are inserted between the two steel materials of the beams 3, 4 and the connecting plates 1A, 2A and the two steel materials are connected by bolts and Joined in the beams 3, 4 and the columns 1, 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seismic wall disposed between columns and beams of a building, and more particularly to a seismic wall joint structure for facilitating the connection of the seismic wall to the columns and beams.

[0002]

2. Description of the Related Art Generally, an earthquake-resistant wall arranged between columns and beams of a building is intended to improve the earthquake resistance of the building due to its high rigidity.
The explanation will be as follows based on. That is, the earthquake-resistant wall 50 has a wall body 60 made of precast concrete, and a steel plate 70 is embedded in the wall body 60. Further, notches 61 are formed at the upper and lower ends of the wall body 60, and the upper and lower ends of the steel plate 70 project into the notches 61. The upper and lower ends of the steel plate 70 are attached to the upper and lower beams 3 by high-strength bolts and welding.
0 and 40, and the beams 30 and 40 are connected to the pillar 1
It is joined to 10, 120 by high strength bolts and welding.

The notch 61 is formed in the wall 60 in order to prevent a gap between the seismic wall 50 and the beams 30, 40 from occurring in the portion other than the joint between the steel plate 70 and the beams 30, 40. Therefore, not only the joining of the upper and lower ends of the steel plate 70 to the beams 30 and 40 and the joining of the beams 30 and 40 to the columns 110 and 120 by high-strength bolts, but also welding and joining are high. This is because a sufficient joining force cannot be obtained only by joining with force bolts.

[0004]

However, the conventional earthquake-resistant wall has a problem that the wall has a notch, so that the shape is complicated and the manufacturing thereof is complicated. In addition, since welding is performed, the joining strength is likely to vary, which makes the joining operation difficult. The present invention
In view of the above circumstances, an object of the present invention is to provide a structure for joining earthquake-resistant walls, which facilitates the production of the earthquake-resistant walls and the joining work between the earthquake-resistant walls and the beams and the beams and columns.

[0005]

A joint structure for earthquake-resistant walls according to claim 1 has an earthquake-resistant wall, wherein the earthquake-resistant wall is a wall body made of precast concrete, and the inside of the wall body extends along the wall surface thereof. The upper and lower ends are provided with steel plates protruding from the upper and lower ends of the wall body, and the upper and lower ends of the steel plate of the earthquake-resistant wall are beams made of two steel materials, respectively. Is clamped, the two steel members of the beam and the upper end and the lower end of the steel plate sandwiched between the two steel members are bolted, so that the upper end and the lower end of the wall body are along the beam. It is characterized by being formed. The joint structure of the earthquake-resistant wall according to claim 2 is the joint structure of the earthquake-resistant wall according to claim 1, wherein a pillar is provided at an end portion of the beam, and the pillar faces the end portion of the beam. The pillar and the beam, the joint plate of the pillar is inserted between the two steel members of the beam, and the joint plate and the two steel members are bolted to each other. It is characterized by being joined to.

[0006]

According to the joint structure of the earthquake resistant wall according to claim 1, since the upper end and the lower end of the wall body of the earthquake resistant wall are formed along the beam, the shape of the wall body is simple and Beams made of two steel materials are respectively sandwiched between the upper and lower ends of the steel plate of the wall, and the two steel materials and the upper and lower ends of the steel plate are bolted to each other. The bolt joining the steel material and the upper end portion and the lower end portion of the steel plate becomes two-sided shear, and acts to increase the proof stress of the bolt. In the joint structure of the earthquake-resistant wall according to claim 2, the pillar and the beam are joined by inserting the joint plate of the pillar between two steel members of the beam and bolt-joining the joint plate and the two steel members. Therefore, the bolt that joins the two steel members of the beam and the joint plate of the column becomes two-sided shear, and acts to increase the proof stress of the bolt.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing an embodiment of a joint structure for earthquake-resistant walls according to the present invention, in which reference numerals 1 and 2 are adjacent columns of a building. Beams 3 and 4 are erected between the pillars 1 and 2, and the beams 3 and 4 are made of two channel-type steel materials 3A, 3B, 4A, and 4B, respectively, as shown in FIG. The two steel materials 3A, 3B, 4A and 4B have flange portions 3Aa,
The web portions 3Ab, 3Bb, 4Ab, 4Bb are arranged so that 3Ba, 4Aa, and 4Ba face in mutually opposite directions.
Are set back to back. Also, two steel materials 3
A, 3B, 4A, 4B web portions 3Ab, 3Bb, 4A
There is a predetermined gap D1 between b and 4Bb.

Further, as shown in FIG.
The joining plates 1A and 2A projecting toward the ends of the beams 3 and 4 are provided, and the joining plates 1A and 2A of the columns 1 and 2 are as shown in FIG.
As shown in Fig. 2, the two steel materials 3A, 3B, 4A of the beams 3 and 4,
4B web portions 3Ab, 3Bb, 4Ab, 4Bb are inserted in the gap D1. Then, the joining plates 1A, 2A and the web portions 3Ab, 3 of the two steel materials 3A, 3B, 4A, 4B.
Bb, 4Ab and 4Bb are the joining plates 1A and 2A and the web portions 3Ab and 3Bb of the two steel materials 3A, 3B, 4A and 4B.
It is bolted by high-strength bolts 1B and 2B provided so as to penetrate 4Ab and 4Bb.
Beams 3 and 4 are joined to the columns 1 and 2.

Also, as shown in FIG. 1, these pillars 1, 2
An earthquake resistant wall 5 is provided in a plane surrounded by the beams 3 and 4, and the earthquake resistant wall 5 has a wall body 6 made of precast concrete. The wall surface 6a of the wall body 6 is provided parallel to the plane, and the front shape of the wall body 6 is formed in a rectangular shape. Therefore, the upper end 6b and the lower end 6 of the wall body 6 are
c is formed so as to be along the beams 3 and 4 with a slight gap, and the connecting plates 7 and 7 are respectively built up in the vertical direction along the wall surface 6a at both end portions inside the wall body 6. Has been done. The connecting plate 7 is a wall body 6 when an external force acts on the earthquake-resistant wall 5.
Is formed of a band-shaped steel material that is plastically deformed before being sheared and broken, and the upper end portion 7a and the lower end portion 7b of the connecting plate 7 are formed wide. The lower end 7b is
As shown in FIG. 2, it projects downward from the lower end of the wall body 6, and the upper end portion 7a of FIG. 1 also projects above the upper end 6b of the wall body 6 like the lower end portion 7b.

As shown in FIG. 3, the lower end 7b of the connecting plate 7 is inserted into the gap D1 between the web portions 3Ab and 3Bb of the two steel members 3A and 3B, and the lower end 7b of the connecting plate 7 is formed. And the web portions 3Ab and 3Bb of the two steel materials 3A and 3B
Is bolted by a high-strength bolt 7c provided so as to penetrate the lower end portion 7b of the connecting plate 7 and the web portions 3Ab, 3Bb of the two steel materials 3A, 3B, and the connecting plate shown in FIG. Similarly to the lower end portion 7b, the upper end portion 7a of 7 is inserted into the gap D1 between the web portions 4Ab and 4Bb of the two steel members 4A and 4B of the beam 4, and the upper end portion 7a of the connecting plate 7 and the two steel members 4 are also inserted.
The web portions 4Ab and 4Bb of A and 4B are the upper end portion 7a of the connecting plate 7 and the web portions 4Ab and 4B of the two steel materials 4A and 4B.
It is bolted by a high-strength bolt 7c provided so as to penetrate b. Thereby, the upper end portion 7 of the connecting plate 7
The a and the lower end portion 7b are joined to the beams 3 and 4.

Further, four brace plates 8 are built inside the wall body 6, and the four brace plates 8 are provided so as to form a rhombus between the two connecting plates 7, 7. Has been. Each brace plate 8 has one end connected to the center of one of the connecting plates 7, and the other end of the two brace plates 8 out of the four brace plates 8 is located at the center of the upper end of the wall body 6. positioned. The other ends of the remaining two brace plates 8 are located at the center of the lower end of the wall body 6, and the upper gusset plate 8A and the lower gusset plate 8B are provided at the center of the upper end and the center of the lower end of the wall body 6. It is provided. The other end of the brace plate 8 is connected to the upper gusset plate 8A or the lower gusset plate 8B. The upper gusset plate 8A and the lower gusset plate 8B project from the upper and lower ends of the wall body 6.

The lower gusset plate 8B is, as shown in FIG. 4, the two steel members 3A of the beam 3 and the web portion 3A of the steel member 3B.
b, 3Bb are inserted in the gap D1 similarly to the connecting plate 7, and the lower gusset plate 8B and the two steel members 3 are inserted.
The web portions 3Ab and 3Bb of A and 3B are the web portions 3Ab of the lower gusset plate 8B and the two steel materials 3A and 3B,
It is bolted by a high-strength bolt 8C provided so as to penetrate 3Bb. Further, similarly to the lower gusset plate 8B, the upper gusset plate 8A shown in FIG. 1 is also inserted into the gap D1 between the web portions 3Ab and 3Bb of the two steel members 4A and 4B of the beam 4 and the upper gusset plate 8A and the two steel members. The web portions 4Ab and 4Bb of 4A and 4B are bolted by a high-strength bolt 8C provided so as to penetrate the upper gusset plate 8A and the web portions 4Ab and 4Bb of the two steel materials 4A and 4B. Thereby, the brace plate 8 is joined to the beams 3 and 4.

Since the seismic resistant wall 5 and the like have the above-described structure, if the beam 4 is horizontally displaced relative to the beam 3 by an external force such as an earthquake force or a wind force, the seismic resistant wall 5 and the like.
Rotates in the direction of arrow A or B in FIG. 1 around its center. Then, the external force is transmitted to the connecting plates 7 via the braces 8 connected to the beams 4, and as a result, a region in which a compressive force in the longitudinal direction acts on the connecting plates 7 with the central portion as a boundary. And a region where a tensile force in the longitudinal direction acts is generated.

As a result, most of the external force is applied to the connecting plate 7.
It will be handled only by itself. Therefore, within a range in which the connecting plate 7 is not plastically deformed, it is possible to sufficiently secure the proof stress against repeated loads and sufficiently exhibit the seismic resistance effect.

If the external force applied to the building becomes excessive, the area of the connecting plate 7 where the tensile force in the inner longitudinal direction acts before the wall breaks, as described above, yields. Plastically deforms. Therefore, even after the plastic deformation of the connecting plate 7, since the wall body 6 is not damaged, the proof stress is not lost, and the toughness of the connecting plate 7 and the tenacious restoring characteristic can be secured. In particular, even if an excessive compressive force acts on the seismic resistant wall 5, the connecting plate 7 and the brace plate 8 are restrained by the wall body 6, so that excavation in the out-of-plane direction is prevented.

According to the joint structure of the earthquake-resistant wall of this embodiment, the upper end 6b and the lower end 6c of the wall body 6 of the earthquake-resistant wall 5 are the beams 3,
Since it is formed so as to follow 4, the shape of the wall body 6 is simple. Therefore, the earthquake resistant wall 5 can be easily manufactured. Although the front shape of the wall 6 is rectangular in the above embodiment, it is needless to say that it may have any shape as long as the earthquake-resistant wall 5 can be easily manufactured.

Further, the upper end portion 7a of the connecting plate 7 of the earthquake-resistant wall 5,
The upper gusset plate 8A and the lower gusset plate 8B, to which the lower end portion 7b and the brace plate 8 are connected, respectively have a beam 3 made of two steel materials 3A, 3B, 4A, 4B,
4 are sandwiched between the two steel materials 3A, 3B, 4A, 4B
Since the upper end portion 7a, the lower end portion 7b of the connecting plate 7 and the upper gusset plate 8A and the lower gusset plate 8B are joined by bolts, the two steel materials 3A, 3B, 4A, 4
The high-strength bolts 7c and 8C that join B with the upper end portion 7a, the lower end portion 7b of the connecting plate 7, the upper gusset plate 8A, and the lower gusset plate 8B become double-sided shear, and the proof stress of the bolts 7c and 8C can be increased. I can. Therefore, a sufficient joining force can be obtained without welding as in the conventional case. Therefore, since it is not difficult to make the joint strength uniform as in the case of welding, the seismic wall 5 and the beams 3 and 4 can be easily joined.

The columns 1 and 2 and the beams 3 and 4 are formed by connecting the joining plates 1A and 2A of the columns 1 and 2 to the two steel members 3A and 3B of the beams 3 and 4,
4A, 4B and the joining plates 1A, 2A and the two steel members 3A, 3B, 4A, 4B are joined by bolt joining, so that the joining plates 1A, 2A of the columns 1, 2 The high-strength bolts 1B and 2B that join the two steel materials 3A, 3B, 4A, and 4B of the beams 3 and 4 become two-sided shear, and the proof stress of the bolts 1B and 2B can be increased. Therefore, it is possible to obtain a sufficient joining force without welding as in the conventional case, so that it is not difficult to make the joining strength uniform as in the case of welding. Thereby, the beams 3 and 4 to which the earthquake-resistant wall 5 is joined and the columns 1 and 2 can be easily joined.

The earthquake-resistant wall 5 in the above embodiment is a wall body 6 made of precast concrete, and is provided inside the wall body 6 along the wall surface 6a, and the upper and lower ends thereof are the upper ends 6b of the wall body 6. And a steel plate protruding from the lower end 6c, any earthquake-resistant wall may be used, and a conventional V-shaped or inverted V-shaped steel plate may be included in the wall body 6 as well. Of course.

[0020]

According to the joint structure of the earthquake resistant wall according to the first aspect of the invention, since the wall body has a simple shape, the earthquake resistant wall can be easily manufactured. In addition, since the bolts that join the two steel materials and the upper and lower ends of the steel plate become two-sided shear,
Since the proof stress of the bolt can be increased, a sufficient joining force can be obtained without welding as in the conventional case. Therefore, since it is not difficult to make the joint strength uniform as in the case of welding, the seismic wall and the beam can be easily joined. According to the joint structure of the earthquake-resistant wall according to claim 2, since the bolt joining the joint plate of the column and the two steel members of the beam has two-sided shear, the proof stress of the bolt can be increased. A sufficient joining force can be obtained without welding. Therefore, since it is not difficult to make the joint strength uniform as in the case of welding, it is possible to easily join the beam and the column to which the earthquake resistant wall is joined.

[Brief description of drawings]

FIG. 1 is a diagram showing an example of a joint structure for earthquake-resistant walls according to the present invention.

FIG. 2 is an enlarged front view showing the connection between the connecting plate and the beam of the earthquake-resistant wall of FIG.

FIG. 3 is an enlarged side view showing a joint between a connecting plate and a beam of the earthquake-resistant wall of FIG.

FIG. 4 is an enlarged front view showing the joint between the brace plate and the beam of the earthquake-resistant wall of FIG. 1.

5 is an enlarged front view showing the connection between the beam and the column in FIG. 1. FIG.

FIG. 6 is an enlarged side view showing the connection between the beam and the column shown in FIG. 1.

FIG. 7 is a diagram showing an example of a conventional seismic wall joint structure.

[Explanation of symbols]

 1 ... Pillar 1A ... Joining plate 2 ... Pillar 2A ... Joining plate 3 ... Beam 3A ... Steel material 3B ... Steel material 4 ... Beam 4A ... Steel material 4B ... Steel material 5 ... Seismic wall 6 ... Wall body 6a ... Wall surface 7 ... Connecting plate (steel plate) 7a ... upper end 7b ... lower end 8 ... brace plate (steel plate) 8A ... upper gusset plate (upper end) 8B ... lower gusset plate (lower end)

Claims (2)

[Claims] 1. A seismic resistant wall, wherein the seismic resistant wall is a wall body made of precast concrete, and the upper and lower ends of the wall body are provided inside the wall body along the wall surface thereof. And a steel plate projected from, the upper end and the lower end of the steel plate of the earthquake-resistant wall, respectively,
A beam made of two steel materials is sandwiched, and two steel materials of the beam and upper and lower ends of a steel plate sandwiched between the two steel materials are bolted to each other, and an upper end and a lower end of the wall body. A structure for joining earthquake-resistant walls, characterized in that the structure is formed along the beam. 2. The seismic wall joint structure according to claim 1, wherein a pillar is provided at an end portion of the beam, and the pillar is a joint plate protruding toward the end portion of the beam. Wherein the pillar and the beam are joined by inserting the joining plate of the pillar between two steel materials of the beam and bolt-joining the joining plate and the two steel materials. Characteristic earthquake-resistant wall joint structure.