JPH07102825A - Arrangement construction for wall - Google Patents

Abstract

PURPOSE:To dispense with increase of the groove faces of beams and absorb horizontal force such as earthquake by alternately providing earthquake resisting walls in a plurality of openings provided by frames, and providing outer force absorbing mechanisms between frames and earthquake resisting walls. CONSTITUTION:A first earthquake resisting wall 16 occcupying a part of the opening 24 of a frame 12 and interposing an outer force absorbing mechanism, and a second earthquake resisting wall 18 occupying the whole opening 24 are alternately arranged. When earthquake force and the like are applied on them, pillars 20 of respective frames are tilted. At this time, relative displacement in the horizontal direction is generated between the wall 16 and an upper beam 22. One part 26 of reinforcements between a plurality of the beams 22 and the walls 16 is plastically deformed by the relative displacement, and a part of earthquake energy input to a building 10 is consumed in this plastic deformation, so as to reduce the horizontal vibration of the building. On the other hand, the wall 18 together with the beam 22 constituting a frame bear the weight of a floor, beams, and the like. The walls 16, 18 are mixedly provided on each floor of the building so as to prevent deformation of a specific floor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wall arrangement structure.

[0002]

2. Description of the Related Art Conventionally, there has been proposed a wall arrangement structure for preventing resonance with a seismic wave in the horizontal direction of a building and thereby reducing the shaking of the building in the horizontal direction (Japanese Patent Publication No. 51-30383). And the actual Kaihei 4-48365
issue). In the wall arrangement structure, a seismic wall occupying a part of each opening is arranged in a plurality of openings defined by a frame including columns and beams, and relative displacement occurs between the frame and the seismic wall. An external force absorbing mechanism for absorbing the external force to be applied is provided. The external force absorbing mechanism is made of metal fittings embedded in the frame and the earthquake-resistant wall and extending a gap between them (Japanese Patent Publication No. 51-30383).
It is composed of a plate extending from the frame and a plate extending from the earthquake-resistant wall, which are connected to each other, and a pair of viscoelastic bodies embedded in the earthquake-resistant wall and holding a part of the plate extending from the earthquake-resistant wall (actual flat 4-48365).
issue).

[0003]

According to the conventional wall arrangement structure, when the seismic force acts on the building, the horizontal deformation of the building is caused by the plastic deformation of the metal fitting or the deformation of the viscoelastic body. Part of the directional seismic force is absorbed. However, in the conventional wall arrangement structure, since a gap is provided between the frame and the earthquake-resistant wall, the earthquake-resistant wall does not function as a supporting structure for the floor, beam, etc. The beam (large beam) that constitutes the frame is solely responsible. Therefore, it is necessary to set the girder to have a large cross section that can withstand an excessive load. An object of the present invention is to provide an arrangement structure of walls that can absorb an external force at the time of an earthquake and does not need to increase the cross section of a beam that constitutes a frame.

[0004]

In a wall arrangement structure according to the present invention, a frame defining a plurality of openings in the vertical direction, and a frame alternately arranged and fixed in the plurality of openings of the frame, A first seismic wall that occupies a part of the opening and a second seismic wall that occupies the entire opening, and for absorbing an external force that causes relative displacement between the frame and the first seismic wall And an external force absorbing mechanism. Further, when the plurality of frames are arranged at intervals in the horizontal direction, the first seismic wall is provided in the odd-numbered openings of some of the plurality of frames and the even-numbered openings of the remaining frames. The second seismic wall is placed in the remaining opening. The first earthquake-resistant wall is made of a reinforced concrete wall body, and the external force absorbing mechanism is a part of a reinforcing bar which is embedded in the first earthquake-resistant wall and extends from the first earthquake-resistant wall to the tip thereof. Consists of a part of the rebar embedded in the frame. Alternatively, the external force absorbing mechanism includes a plate extending from the frame and a plate extending from the first earthquake-resistant wall, which are connected to each other,
The pair of viscoelastic bodies is embedded in the first earthquake-resistant wall and holds a part of a plate extending from the first earthquake-resistant wall.

[0005]

According to the present invention, with respect to a plurality of vertical wall bodies, the first seismic wall that occupies a part of the opening of the frame and the external force absorbing mechanism intervenes, and the opening of the frame. Since the second seismic wall which occupies the whole is arranged alternately, when the seismic force acts, the seismic energy is absorbed through the external force absorbing mechanism provided for the first seismic wall, and the building accompanying the earthquake Can reduce the roll of the. On the other hand, the second earthquake-resistant wall cooperates with the beams forming the frame to bear the weight of the floor, beam, and the like. Therefore, it is possible to avoid an increase in the cross-sectional area of the beam, which is required when the beam alone bears the weight of the floor, beam, and the like. In addition, the first earthquake-resistant wall is arranged in each of the odd-numbered openings of some of the plurality of frames horizontally spaced from each other and the even-numbered openings of the remaining frames, and , By arranging the second earthquake-resistant wall in the other remaining openings, the first and second earthquake-resistant walls can be mixed on each floor of the building, and when the seismic force acts,
It is possible to prevent deformation from being concentrated on a specific floor and prevent large deformation from occurring. As the external force absorbing mechanism, a plastic deformation type or a viscoelastic body utilizing type can be selectively used in consideration of the structure of the building.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to FIGS. 1 and 2, a wall layout structure applied to a building 10, such as a reinforced concrete apartment house, comprises a plurality of frames 12 and 14 horizontally spaced from each other. A plurality of first earthquake-resistant walls 16 and a plurality of second earthquake-resistant walls 18 supported by each frame 12, 14.
Including and

Each frame 12, 14 includes a pair of columns 20.
And a plurality of beams (girders) 22 that are arranged at intervals in the vertical direction and are connected to the pair of columns 20.
Each beam 22 defines each floor of the building 10. A pair of pillars 20
The plurality of beams 22 define a plurality of rectangular openings 24 in the vertical direction.

The first seismic wall 16 is arranged in the odd-numbered or odd-numbered openings 24 of the frame 12 and the even-numbered or even-numbered openings 24 of the frame 14 counted from below. The second earthquake-resistant wall 18 is arranged in each of the remaining openings 24 of each frame. Therefore, the first
The second seismic walls 16 and 18 are alternately arranged in the vertical direction in the plurality of openings 24 of each frame.

The odd-numbered openings and the even-numbered openings are counted from either the lower side or the upper side of each frame. Hereinafter, for convenience, the frame 12 in which the first earthquake-resistant wall 16 is arranged in the odd-numbered openings is referred to as a first frame, and the frame 14 in which the first earthquake-resistant wall 16 is arranged in the even-numbered openings. Is referred to as a second frame.

The first and second frames 12, 14 are
Although they can be arranged so as to be randomly mixed in the horizontal direction (the left-right direction in the drawing), they are preferably arranged regularly. In the illustrated example, the second frames 14 are arranged with one first frame 12 in between, that is, they are arranged alternately with the first frames 12 (FIG. 1). Instead of this example, for example, the second frame 14 is provided with the two first frames 12 (FIG. 2), or the second frame 14 is provided with the three first frames 12 (FIG. 3), Can be placed.

Referring to FIG. 4, in this example, two arrangement structures substantially similar to the example shown in FIG. 1 are arranged in parallel. Both arrangements are interconnected via a common post 20 between them. Each arrangement structure in this example is different from the arrangement structure in the example shown in FIG. 1 in that the first frame 12 is arranged at both ends in the left-right direction in the drawing.

Further, referring to FIG. 5, a plurality of first frames 12 spaced apart from each other and a plurality of second frames 14 spaced apart from each other are arranged in parallel to form first and second frames. The frames 12 and 14 are connected to each other via a common column 20. Therefore, in this example, the first frame 12 and the second frame 14 are alternately arranged in the vertical direction (horizontal direction) in the drawing.

Further referring to FIG. 6, in this example,
One arrangement structure similar to the example shown in FIG. 1 and one shown in FIG.
The two layout structures are arranged in parallel. Both arrangements are interconnected via a common post 20 between them. Therefore, in the arrangement structure in this example, the first frames 12 and the second frames 14 are alternately arranged not only in the horizontal direction in the drawing but also in the vertical direction in the drawing.

The first seismic wall 16 is a rectangular flat plate smaller than the size of the opening 24 and occupies a part of the opening 24. In the illustrated example, both side edges and the upper edge of the first earthquake-resistant wall 16 are spaced from the columns 20 and the upper beam 22, respectively, and the lower edge of the first earthquake-resistant wall 16 is at the lower side. It is fixed to the beam 22.

The first seismic wall 16 is provided with a plurality of connecting members 26 extending in the vertical direction through the remaining portion of the opening 24, in the illustrated example, the gap between the upper beam 22 and the first seismic wall 16. It is connected to the frame or the upper beam 22. In the wall-type rigid frame structure, it is connected to a beam in the wall. The plurality of connecting members 26 form an external force absorbing mechanism for absorbing an external force that causes a relative displacement between the frame and the first seismic wall 16.

The illustrated first earthquake-resistant wall 16 is made of a reinforced concrete wall. As shown in FIGS. 7 and 8, the plurality of connecting members 26 are a part of a reinforcing bar embedded in the wall body and protruding upward from the upper edge portion of the wall body. An upper end of a part of the reinforcing bar extends into the concrete forming the beam 22 and is fixed thereto. Each connecting member 26 may be, for example, a steel plate instead of the illustrated example. The piece is fixed to the beam and the first earthquake-resistant wall by bolts, for example.

In the example shown in FIG. 9, the first earthquake-resistant wall 16 is connected to each of the columns 20 of the frame at its side edges as well as its upper edge. The plurality of connecting members 28 that connect the first earthquake-resistant wall 16 to the pillar 20 are each formed of a plurality of reinforcing bars that are embedded in the first earthquake-resistant wall 16 made of reinforced concrete and project laterally from the respective side edges thereof. The connecting member 28 constitutes the external force absorbing mechanism together with the connecting member 26, and, like the connecting member 26, can be made of a steel plate.

The second earthquake-resistant wall 18 is formed of a rectangular flat plate having substantially the same size as the opening 24, occupies the entire area of the opening 24, and its upper and lower edges and both side edges are both beams 22 (or the beam and the floor). It is fixed to both columns 20.

The columns 20, the beams 22, the floor and the earthquake-resistant wall 1
6, 18 can be assembled as those made of precast concrete, or can be temporarily molded by cast-in-place concrete. Alternatively, the columns 20, the beams 22, and the floor may be molded by cast-in-place concrete, and the seismic walls 16 and 18 made of precast concrete may be arranged during the molding. Alternatively, after the columns 20, beams 22 and the floor made of precast concrete are further arranged, the earthquake resistant walls 16 and 18 can be formed by cast-in-place concrete.

FIG. 10 shows a first seismic wall 16 made of precast concrete to which an external force absorbing mechanism of another example is applied. The external force absorbing mechanism of this example includes a pair of plate-shaped viscoelastic bodies 30 embedded in parallel with the wall surface of the first seismic wall at two locations above the first seismic wall 16, respectively, It includes a steel plate 32 that is held and fixed to both viscoelastic bodies 30 and extends upward from the first earthquake-resistant wall 16, and a steel plate 34 that extends downward from the frame or upper beam 22. The plates 32 and 34 are butted against each other, and are connected to each other via a pair of plates 36 that are in contact with the plates 32 and 34 and a plurality of bolt and nut assemblies 38 that penetrate the plates.

It is desirable that the pair of viscoelastic bodies 30 be embedded in the first seismic wall 16 via the housing 40 having an open upper end. The pair of viscoelastic bodies 30 are fixed to the housing 40. The viscoelastic body 30 is made of, for example, superplastic rubber, high damping rubber, silicone rubber, rubber asphalt, or the like.

The first earthquake-resistant wall 16 is fixed to the lower beam 22 at two lower portions thereof. More specifically, a pair of plates 42 embedded in the first seismic wall 16 and extending downward from the first seismic wall, and a pair of plates 42 embedded in the lower beam and extending upward from the beam and abutting both plates 42. A pair of plates 44 and these plates 42, 4
The first earthquake-proof wall 16 is fixed to the lower beam 22 via a pair of plates 46 contacting the plate 4 and a bolt / nut assembly 48 penetrating the plates 42 to 46.

In the illustrated example, the upper plate 36 and the lower plate 42 of the first earthquake-resistant wall 16 are provided in the first earthquake-resistant wall 16, and a pair of notches which are released at the upper edge thereof. 50 and a pair of notches 52 that open to the lower edge thereof. The external force absorbing mechanism can be applied to the lower portion of the first earthquake-resistant wall 16 instead of the illustrated example, and the first earthquake-resistant wall 16 can be fixed to the upper beam 22.

According to the structure of the wall of the present invention, when the seismic force acts on the building 10, the pillars 20 of each frame are tilted as shown in FIGS. At this time, the first earthquake-resistant wall 16
A relative displacement in the horizontal direction occurs between the upper beam 22 and the upper beam 22. Due to this relative displacement, a part 26 of the plurality of reinforcing bars between the plurality of beams 22 and the first earthquake-resistant wall 16 undergoes plastic deformation, and a part of the seismic energy input to the building 10 undergoes this plastic deformation (Fig. 8 and FIG. 9) or deformation of the viscoelastic body 30 due to movement of the plates 32 and 36 (FIG. 1).
As a result of being spent on 0), a part of the seismic energy is absorbed and rolling of the building 10 is reduced.

In the example shown in FIG. 9, a plurality of connecting members (reinforcing bars) 28 extending from both side edges of the first earthquake-resistant wall 16 are further provided.
However, when the seismic force acts, they undergo tensile and compressive forces and yield and buckle, thereby absorbing the seismic energy.

Further, since the first earthquake-resistant wall 16 is not fixed to the column 20 and has a gap between the column 20 and the column 20, the beam 22 and the floor, beam or the like supported by the beam 22 are substantially formed. Although not supported, the second earthquake-resistant wall 18 is fixed to both columns 20 and the upper and lower beams 22 and thus substantially supports them.
Therefore, when all the earthquake-resistant walls are composed of the first earthquake-resistant wall 16, only the beam 22 bears the weight of the floor, beam, etc., and it becomes necessary to increase the cross section of the beam. For example, the beam 22 cooperates with the second earthquake-resistant wall 18 and bears the weight of the floor, beam, and the like. Therefore, it is not necessary to increase the cross section of the beam 22.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view of a wall arrangement structure.

FIG. 2 is a schematic cross-sectional view of another example of the wall arrangement structure.

FIG. 3 is a schematic cross-sectional view of another example of the wall arrangement structure.

FIG. 4 is a schematic cross-sectional view of another example of the wall arrangement structure.

FIG. 5 is a schematic cross-sectional view of another example of the wall arrangement structure.

FIG. 6 is a schematic cross-sectional view of another example of the wall arrangement structure.

FIG. 7 is an elevation view of the frame and the earthquake-resistant wall supported by the frame.

FIG. 8 is a partial elevational view of the frame and the earthquake-resistant wall before and during the action of the seismic force.

FIG. 9 is a partial elevational view of a frame and other examples of earthquake-resistant walls before and during the action of seismic force.

FIG. 10 is an elevation view of another example of the frame and the first earthquake-resistant wall supported by the frame.

[Explanation of symbols]

 10 Buildings 12,14 First and second frames 16,18 First and second seismic walls 20,22 Columns and beams 24 Openings 26,28 Connecting members 30 Viscoelastic bodies 32,34 Plates

Claims (4)

[Claims] 1. A frame that defines a plurality of openings in the vertical direction, and a first earthquake-resistant wall that is alternately arranged and fixed to the plurality of openings of the frame and occupies a part of the opening, and all of the openings. A structure for arranging walls, which includes a second earthquake-resistant wall that occupies a space, and an external force absorbing mechanism that absorbs an external force that causes relative displacement between the frame and the first earthquake-resistant wall. 2. A plurality of frames which are horizontally spaced apart from each other and define a plurality of openings in the vertical direction, and a plurality of frames which are alternately arranged in the plurality of openings of the frame and fixed to the frame. First occupying part of said opening
And a second seismic wall that occupies the entire opening, and an external force absorbing mechanism that absorbs an external force that causes relative displacement between the frame and the first seismic wall. The first earthquake-resistant wall is arranged in the odd-numbered openings of some of the frames and the even-numbered openings of the remaining frames, and the second earthquake-proof walls are arranged in the remaining openings.
The seismic wall is located, the wall arrangement structure. 3. The first earthquake-resistant wall comprises a reinforced concrete wall body, and the external force absorbing mechanism is embedded in the first earthquake-resistant wall and is a part of a reinforcing bar extending from the first earthquake-resistant wall to the outside thereof. The wall arranging structure according to claim 1 or 2, wherein a tip portion of the reinforcing bar is a part of a reinforcing bar embedded in the frame. 4. The external force absorbing mechanism includes a plate extending from the frame and a plate extending from the first earthquake resistant wall, and a plate embedded in the first earthquake resistant wall and extending from the first earthquake resistant wall, which are connected to each other. The wall arrangement structure according to claim 1 or 2, which comprises a pair of viscoelastic bodies that hold a part of the wall.