JP5120592B2 - Seismic wall structure - Google Patents

Description

  The present invention relates to a seismic wall structure that is installed, for example, in a construction surface of a column beam frame of a building.

Conventionally, in the seismic reinforcement of existing buildings, as a method of installing seismic elements in the structure of a column beam frame, methods such as installing a reinforced concrete seismic wall or installing a framed steel brace are generally used. It was. In these construction methods, for example, the frame material for providing the steel brace and the column beam frame are joined by anchor bars, so the construction procedure becomes complicated, and the construction period becomes long. There were many occurrences. Further, since the material to be reinforced is a heavy steel frame, it is difficult to carry in and construct, and the weight of the building after the reinforcement is greatly increased.
Therefore, as a method of dealing with these problems, a method of constructing a seismic wall by placing concrete or FRP blocks on the surface of a column beam frame of an existing building without constructing anchor bars ( For example, see Patent Documents 1 and 2).
In such a block seismic wall, the joint between adjacent blocks and the joint between the block seismic wall and the building frame located on the outer periphery thereof are fixed with an adhesive or the like.
JP 2005-248651 A Japanese Patent Application Laid-Open No. 11-071907

However, normally, the block shear wall cannot be constructed unless it is smaller than the dimensions of the construction surface. There is a case where a gap having a thickness is generated, and it is necessary to cope by closing the gap. As a method of constructing this gap, filling is performed by filling a filler such as non-shrink mortar or epoxy resin. However, when this gap size is increased, filling work takes time and work time is increased. It was.
In addition, when the gap size is increased, a connection region by the filler is increased, and there is a problem that it is difficult to ensure strength and rigidity in this portion.

  The present invention has been made in view of the above-described problems, and the present invention provides a seismic wall structure that can reduce the labor required for installation, and can reliably ensure strength and rigidity. For the purpose.

In order to achieve the above object, the earthquake-resistant wall structure according to the present invention is a earthquake-resistant wall structure for constructing a earthquake-resistant wall in a building frame, and is formed of a plurality of blocks, and has an outer peripheral portion fixed to the frame and horizontally. And a block seismic wall having joint blocks that are connected to each other across the gap, and the joint blocks are connected to each other by connecting the joint blocks to each other. The joining block is characterized in that the overall thickness dimension is smaller than the thickness dimension of the block to which the joining board is not fixed .
In the present invention, in the gap portion formed in the block earthquake-resistant wall, the joining blocks facing the gap portion are connected and joined together by the joining plate, and the outer peripheral portion of the block earthquake-resistant wall is fixed to the cabinet, so that the frame and the block earthquake-resistant wall are fixed. The wall can be integrated. At this time, since the block earthquake-resistant wall composed of a plurality of blocks acts as the earthquake-resistant wall, it is possible to construct a earthquake-resistant wall structure that can exhibit high shear rigidity and proof stress. And by changing the size of the joining plate, it can be installed corresponding to the size of the gap, so that the housing and the block earthquake resistant wall can be reliably joined regardless of the size of the gap. it can.
In addition, in the joining block, the outer surface of the joining plate and the side surface of the block earthquake-resistant wall are approximately fixed by fixing the joining plate to a location where the thickness dimension is smaller than the thickness dimension of the block to which the joining plate is not fixed. It can be installed so as to be on the same plane.

In the earthquake-resistant wall structure according to the present invention, it is preferable that the joining plate and the joining block are fixed by an adhesive means.
In this invention, construction can be simplified by using an adhesive etc. as an adhesive means.

Moreover, in the earthquake-resistant wall structure according to the present invention, it is preferable that the joining plate is arranged so as to sandwich the joining block from both side surfaces.
In this invention, a more reliable joining structure is realizable by pinching with a pair of joining board from the both sides | surfaces side of the joining blocks which face a clearance gap part.

According to the earthquake-resistant wall structure of the present invention, the entire gap between the block earthquake-resistant wall and the building frame is not filled with a filler or the like as in the prior art, and the joining blocks facing the gap portion are joined with the joining plate. The block seismic wall and the frame can be integrated by simplified construction such as connecting and joining. For this reason, it is possible to reduce the labor for installation and shorten the construction period.
Moreover, in this earthquake-resistant wall structure, by changing the size of the joint plate, it can be installed corresponding to the size of the gap formed in the block earthquake-resistant wall. The block seismic wall can be reliably integrated, and strength and rigidity can be secured.

Hereinafter, a first embodiment of a seismic wall structure according to the present invention will be described with reference to FIGS. 1 to 3.
1A and 1B are diagrams showing a seismic wall structure according to a first embodiment of the present invention, in which FIG. 1A is an elevational view, FIG. 1B is a cross-sectional view taken along line AA shown in FIG. FIG. 3 is an enlarged perspective view showing a gap adjusting portion of the block earthquake resistant wall, and FIG. 3 is a view taken along the line BB of the gap adjusting portion in FIG.

As shown in FIGS. 1 (a) and 1 (b), the earthquake-resistant wall structure 1 according to the first embodiment is obtained by fixing a block earthquake-resistant wall 20 to a column beam frame 10 constituting an existing building frame. .
The column beam frame 10 is formed of horizontal beams 11A and 11B such as upper and lower reinforced concrete structures, and columns 12A and 12B such as reinforced concrete structures erected on the left and right sides. A space (structure surface 2) is provided. The block earthquake-resistant wall 20 is disposed in the structural surface 2 of the column beam frame 10.

  The earthquake-resistant wall structure 1 is formed of a plurality of blocks 21, 21,... To fix the outer peripheral portions 20 a, 20 b, 20 c, 20 d to the column beam frame 10 and to form a horizontal gap portion S 1 (gap portion) in the horizontal direction. The first and second blocks are attached to the side surfaces of the block earthquake-resistant wall 20 and the blocks (first and second joining blocks 21A and 22A described later) facing the horizontal gap S1 side by an adhesive 23 (adhesive means). It consists of a pair of joining board 30 (code | symbol 30A, 30B shown in FIG.1 (b)) which connects 2nd joining blocks 21A and 22A. As the joining plate 30, for example, a fiber reinforced plastic such as CFRP or GFRP, a steel plate, or the like can be used that has a performance equal to or higher than that of the block in terms of strength and rigidity.

  As shown in FIGS. 1A and 1B, each of the blocks 21 forming the block seismic wall 20 is, for example, a box type (in the first embodiment, it is solid and may be hollow, for example). A rectangular parallelepiped shape, for example, FRP, fiber reinforced concrete, or the like made of a material capable of exhibiting proof stress is employed. Adjacent blocks 21 and 21 are bonded and integrated by an adhesive 23. As the adhesive 23, an organic or inorganic adhesive can be used.

The block seismic wall 20 includes a block 21 arranged at the uppermost stage on the construction surface 2 (this is referred to as a first joint block 21A) and a block 21 immediately below (second stage from the top) (this is the first one). The shape is divided between the two joint blocks 22A), and the divided portion is the horizontal gap S1. Here, the block earthquake-resistant wall 20 below the horizontal gap portion S <b> 1 is defined as a lower block wall 22.
That is, the first joining block 21A is fixed to the upper beam 11A, the right column 12A, and the left column 12B by the adhesive 23. On the other hand, the lower block wall 22 is fixed to the lower beam 11B, the right column 12A, and the left column 12B by an adhesive 23.

Here, a portion where the first joining block 21A and the second joining block 22A are connected and joined to each other by the joining plate 30 is defined as a gap adjusting portion R1.
As shown in FIGS. 2 and 3, each of the pair of joining plates 30A and 30B has a flat plate shape made of a material such as a steel plate, and sandwiches each of the first joining block 21A and the second joining block 22A from both side surfaces. It is arranged like that. As described above, the joining plates 30A and 30B are fixed to the side surfaces 21a and 22a of the first and second joining blocks 21A and 22A by the adhesive 23. Thereby, force is transmitted to both the first and second joining blocks 21A and 22A arranged in the gap adjusting portion R1.
And the magnitude | size of each joining plate 30A, 30B is made into the external shape which overlaps with the predetermined range on the side surface of the 1st and 2nd joining blocks 21A, 22A, and is arbitrarily set according to the magnitude | size of the horizontal clearance part S1. be able to. That is, by changing the size of the bonding plate 30 (in the first embodiment, the vertical dimension of the bonding plate 30), it corresponds to the size of the horizontal gap S1 (length in the vertical direction). Therefore, the column beam frame 10 and the block earthquake resistant wall 20 can be joined regardless of the size of the horizontal gap portion S1.

As shown in FIG. 1, in the seismic wall structure 1 configured as described above, the block seismic wall 20 integrally fixed to the column beam frame 10 acts as the seismic wall, so that high shear rigidity and proof stress are exhibited. can do.
In the present embodiment, the block seismic wall 20 can be integrated with the column beam frame 10 by the adhesive 23 without using the anchor bars, so that noise and vibration generated during the construction of the anchor bars as in the prior art. In addition, construction without generation of dust can be realized.

Next, the construction procedure of the earthquake resistant wall structure 1 by 1st embodiment is demonstrated based on drawing.
As shown in FIGS. 1 (a) and 1 (b), first, the surface treatment of the concrete surface of the column beam frame 10 is performed within the structure surface 2 by, for example, sanding. After that, a plurality of blocks 21, 21,... Are stacked in order from below in the composition surface 2, and a lower block wall 22 positioned below the horizontal gap portion S <b> 1 is installed. Thereafter, the first joining block 21A is fixed to the lower surface 11a of the upper beam 11A with an adhesive 23. At this time, a horizontal gap S1 is formed between the first and second joining blocks 21A and 22A. Thereafter, as shown in FIGS. 2 and 3, the joining plates 30 </ b> A and 30 </ b> B are fixed to the first and second joining blocks 21 </ b> A and 22 </ b> A with an adhesive 23 to construct the block earthquake resistant wall 20. By such a procedure, the column beam frame 10 and the block seismic wall 20 can be integrated.

As described above, in the earthquake-resistant wall structure according to the first embodiment, the entire gap between the block earthquake-resistant wall and the column beam frame is not filled with the filler or the like in the conventional manner, and the gap adjustment portion R1 is horizontal. The block seismic wall 20 and the column beam frame 10 are integrated by a simplified construction in which the first and second joining blocks 21A and 22A facing the gap S1 are joined and joined by the joining plates 30A and 30B. be able to. For this reason, it is possible to reduce the labor for installation and shorten the construction period.
Moreover, in this earthquake-resistant wall structure 1, since it can install according to the magnitude | size of the horizontal gap part S1 formed in the block earthquake-resistant wall 20 by changing the magnitude | size of the joining plate 30, of this horizontal gap part S1. Regardless of the size, the column beam frame 10 and the block earthquake-resistant wall 20 can be reliably integrated, and strength and rigidity can be ensured.

Next, the second and third embodiments and modifications of the present invention will be described with reference to FIGS. 4 to 7, but the same or similar members and parts as those of the first embodiment described above are included. A description is omitted using the same reference numerals, and a configuration different from the first embodiment will be described.
FIG. 4 is an elevation view showing a seismic wall structure according to the second embodiment.
As shown in FIG. 4, in the earthquake-resistant wall structure 1 according to the second embodiment, horizontal gap portions S <b> 2 and S <b> 3 are formed at different positions in the vertical direction (height direction) on the block earthquake-resistant wall 20. Similarly to the first embodiment, the gap adjustment portions corresponding to the portions corresponding to the horizontal gap portions S2 and S3 are denoted by reference signs R2 and R3, respectively. More specifically, in the gap adjustment portion R2, a horizontal gap portion S2 is provided between the second and third stage joining blocks 22A and 24A from the top, and in the gap adjustment portion R3, the third and fourth steps from the top. A horizontal gap S3 is provided between the joint blocks 24A and 25A. In the gap adjustment portions R2 and R3, the joining plates 31 and 32 are provided, respectively.
As described above, in the second embodiment, the pillars are simplified by joining the joining blocks facing the horizontal gap portions S2 and S3 by the joining plates 31 and 32 in the gap adjusting portions R2 and R3. Since the block earthquake-resistant wall 20 can be integrally constructed corresponding to the gap portions S2 and S3 formed in the beam frame 10, work work during installation can be reduced as in the first embodiment.

Next, FIG. 5 is an elevation view showing a seismic wall structure according to the third embodiment.
As shown in FIG. 5, in the earthquake-resistant wall structure 1 according to the third embodiment, a horizontal gap portion S <b> 4 is formed in the horizontal direction in the block earthquake-resistant wall 20, and a vertical gap portion S <b> 5 is formed in the vertical direction. And the clearance gap adjustment part equivalent to the location corresponding to each clearance gap part S4, S5 is made into code | symbol R4, R5. Bonding plates 33 and 34 are provided in the gap adjustment portions R4 and R5, respectively. In addition, one junction plate 33 (34) is arrange | positioned in the location where both the junction plates 33 and 34 cross | intersect, and the outer surface of both the junction plates 33 and 34 is flush. That is, in the third embodiment, the joining plate 34 of the vertical gap adjusting portion R5 is continuously arranged from the uppermost block to the lowermost block, and the joining plate 33 of the horizontal gap adjusting portion R4. Are arranged in a state of being separated on the left and right with the joining plate 34 interposed therebetween.
Even in the third embodiment, by the simplified construction of joining the joining blocks facing each of the gaps S4 and S5 by the joining plates 33 and 34 as in the first and second embodiments, Since the column beam frame 10 and the block earthquake resistant wall 20 can be constructed integrally, the same effects as those of the first and second embodiments can be obtained.

Next, FIG. 6 is a diagram illustrating a seismic wall structure according to a first modification of the first embodiment, in which (a) is a diagram corresponding to FIG. 2, and (b) is a diagram corresponding to FIG. . FIG. 7 is a diagram showing a seismic wall structure according to a second modification of the first embodiment, in which (a) is a diagram corresponding to FIG. 2, and (b) is a diagram corresponding to FIG. .
As shown in FIGS. 6A and 6B, in the first modification, the thickness dimensions of the first and second joining blocks 21A and 22A of the gap adjusting portion R1 are set to the block 21 (joining of the other general parts). It is made smaller than the thickness dimension of the block) in which the plates 30A and 30B are not fixed. A structure in which the outer side surfaces 30a, 30a of the pair of joining plates 30A, 30B are substantially flush with the side surfaces 21a, 21a of the block 21 of the general part, that is, both side surfaces of the block earthquake resistant wall 20 are substantially flat. It has become.

  Moreover, as shown to FIG. 7 (a) and (b), in the 2nd modification, in the 1st and 2nd joining blocks 21A and 22A of clearance gap adjustment part R1, it is the range to which joining board 30A, 30B is fixed. Thin portions 21b and 22b having a reduced thickness are formed. That is, steps are formed in the thickness direction on the side surfaces of the joining blocks 21A and 22A. And each outer side surface 30a, 30a of a pair of joining board 30A, 30B is the other side surfaces 21c, 22c (that is, the side part which is not thin part 21b, 22b) and joining board 30A, 30B. The structure is provided so as to be substantially flush with the side surfaces 21a, 21a of the block 21 of the general portion that is not fixed.

The first to third embodiments of the earthquake-resistant wall structure according to the present invention have been described above. However, the present invention is not limited to the first to third embodiments, and does not depart from the gist thereof. The range can be changed as appropriate.
For example, the clearance gap formed in the block earthquake-resistant wall 20 should just be formed in at least one direction of a horizontal direction and a perpendicular direction.
The fixing between the joining plates 30A and 30B and the joining block is not limited to the means using the adhesive 23, and may be a fastening means such as a bolt.
Moreover, the block 21 is not limited to a rectangular parallelepiped shape, and there is no restriction regarding a specific shape, size, and quantity. For example, the block 21 may have a horizontally long shape or a vertically long shape.
Furthermore, the joining plate 30 disposed on one side surface of the block earthquake-resistant wall 20 may be a single plate or may be divided into a plurality of shapes.

And as a structural form of the existing building using the seismic wall structure 1, for example, reinforced concrete structure, steel frame structure, steel reinforced concrete structure, wooden structure, brick structure, stone structure, etc., which can be seismically strengthened by adding or adding seismic walls There is no particular limitation.
In the first and second embodiments, the block earthquake-resistant wall 20 is installed in the structural surface 2 of the column beam frame 10, but the installation position is the first to third examples of the column beam frame 10. It may be in the construction surface 2 as in the form of, or may be arranged along the construction surface 2 outside the construction surface 2.
Further, the adhesive 23 for fixing the blocks 21, 21 to each other, the block 21 and the column beam frame 10, and the joining block and the joining plate 30 is particularly limited as long as it is an adhesive such as an organic adhesive or an inorganic adhesive. It is not a thing.

It is a figure which shows the earthquake-resistant wall structure by 1st embodiment of this invention, Comprising: (a) is the elevation view, (b) is the sectional view on the AA line shown to (a). It is an expansion perspective view which shows the clearance gap adjustment part of a block earthquake-resistant wall. It is a BB arrow directional view of the clearance gap adjustment part of FIG. It is an elevation view which shows the earthquake-resistant wall structure by 2nd embodiment. It is an elevation view which shows the earthquake-resistant wall structure by 3rd embodiment. It is a figure which shows the earthquake-resistant wall structure by the 1st modification of 1st embodiment, Comprising: (a) is a figure corresponding to FIG. 2, (b) is a figure corresponding to FIG. It is a figure which shows the earthquake-resistant wall structure by the 2nd modification of 1st embodiment, Comprising: (a) is a figure corresponding to FIG. 2, (b) is a figure corresponding to FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Earthquake-resistant wall structure 2 Structural surface 10 Column beam frame 11A, 11B Beam 12A, 12B Column 20 Block earthquake-resistant wall 21 Block 21A 1st joint block 22A Second joint block 24A, 25A Joint block 23 Adhesive (adhesion means)
30, 30A, 30B Bonding plate S1, S2, S3, S4 Horizontal gap (gap)
S5 Vertical gap (gap)

Claims (3)

A seismic wall structure that builds a seismic wall in the building frame,
A block formed of a plurality of blocks, having an outer peripheral portion fixed to the housing, and having a gap portion in at least one of a horizontal direction and a vertical direction, and having a joining block connected to each other across the gap portion A seismic wall,
A bonding plate that is fixed to each side surface of the bonding blocks and connects the bonding blocks;
Equipped with a,
The seismic resistant wall structure , wherein the joint block has an overall thickness dimension smaller than a thickness dimension of the block to which the joint plate is not fixed . The earthquake-resistant wall structure according to claim 1, wherein the joining plate and the joining block are fixed by an adhesive means. The earthquake-resistant wall structure according to claim 1 or 2, wherein the joining plate is disposed so as to sandwich the joining block from both side surfaces thereof.

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