JP6674191B2 - Earthquake-resistant wall and method of building earthquake-resistant wall - Google Patents

Description

The present invention is resistant Shinkabe, and a shear wall construction method.

As one of the methods of seismic reinforcement of existing buildings, a seismic wall is constructed with cast-in-place concrete or block pile on the structure surrounded by columns and beams of the existing building to increase the horizontal strength and rigidity of the beam-column structure. There is a way to do that. The method of constructing an earthquake-resistant wall by block stacking has the advantage that an existing building can be used during construction because concrete on-site work is not required.
However, since block stacking is a work of dropping a vertical bar into the insertion hole of the block while dropping it in the structure of the beam-column frame, the workability deteriorates when the stacking height increases. Furthermore, since the upper and lower surfaces of the block formed in a rectangular shape when viewed from the front are formed linearly in the horizontal direction, the upper and lower blocks are displaced only by the frictional force between the upper surface and the lower surface. Cannot receive load.
Patent Literature 1 discloses, for example, a technique for constructing an earthquake-resistant wall by block stacking.

  The block described in Patent Literature 1 is a half-split shape obtained by dividing a rectangular concrete block into two in the thickness direction when viewed from the front, and has a rectangular flat plate portion and a projecting portion protruding from one surface of the flat plate portion. Configuration. Also, in the earthquake-resistant wall of Patent Document 1, the protruding portion side of the block in which the protruding portion is protruded from the flat plate portion is overlapped and laminated from the lateral direction with a vertical streak sandwiched therebetween, and a gap formed on the protruding portion side is formed. The grout material is filled. For this reason, the process of dropping while inserting the vertical streak into the insertion hole of the block becomes unnecessary, and the problem that the workability is reduced when the stacking height of the block is increased is improved.

JP 2003-49545 A

  However, since the earthquake-resistant wall described in Patent Literature 1 has a configuration in which a rectangular block viewed from the front is divided in the thickness direction, when receiving a lateral load such as during an earthquake, the upper and lower blocks are shifted and the lateral load is reduced. The problem of not being able to bear it has not been improved.

  In view of the above facts, an object of the present invention is to provide a block, a shear wall, and a method of constructing a shear wall capable of arranging vertical streaks even in a state where the pile height is high and capable of bearing a lateral load.

The block according to an aspect has a concave portion that forms a through-hole that penetrates up and down in a combined state, and includes an inclined plane in which upper surfaces and lower surfaces serving as stacking surfaces are inclined from both ends toward a center portion, It is characterized in that planes are stacked one on top of the other.

According to the block according to one aspect , the block has an inclined plane in which the upper surface and the lower surface serving as the stacking surface are inclined from both ends toward the center, and when the wall stacked by the block is viewed from the front. , The inclined planes are superimposed one on top of the other and continue in a waveform. Since this waveform is formed on the upper surface and the lower surface of the block, a plurality of waveforms are formed in the vertical direction at intervals of the height of the block. Thereby, the displacement of the upper and lower blocks is suppressed, and the lateral load at the time of an earthquake or the like can be applied to the inclined planes formed on the upper surface and the lower surface as bearings.
In addition, since the block has a concave portion that forms a through hole that penetrates up and down in a state where the block is aligned in the thickness direction, the concave bar is formed to surround the vertical reinforcing bar from the front side and the back side of the wall body. By filling the through holes with grout, a block wall can be constructed. As a result, even if the stacking height increases, the vertical streaks can be arranged, and a decrease in workability can be suppressed.

The first anti-seismic wall according to the first aspect of the present invention is a first anti-seismic wall constructed on a column-beam frame having vertical reinforcing bars and a second anti-seismic wall constructed on the first anti-seismic wall. An earthquake-resistant wall having a wall, wherein the first earthquake-resistant wall is formed on an inclined plane whose upper surface and lower surface serving as a stacking surface are inclined from both ends toward a center , and a lower end and an upper end of the inclined plane. And a first block having a chamfer that is formed by stacking the inclined planes on top of each other, and the second earthquake-resistant wall includes two blocks each having a recess at an end and a center. (1) An upper surface and a lower surface serving as a stacking surface are formed by being opposed to and bonded to each other in an out-of-plane direction of the earthquake-resistant wall, and are formed on an inclined plane inclined from both ends toward a center , and a lower end and an upper end of the inclined plane. heavy second block, the inclined planes vertically with a chamfered, the A first through-hole, which is formed by combining the concave portions of the central portion and penetrates vertically and does not open in an out-of-plane direction of the first earthquake-resistant wall; A second through-hole that is vertically opposed to the first through-hole formed by combining the concave portions of the end portions with the second block facing the in-plane direction of the first earthquake-resistant wall, and is not communicated with the first through-hole. And the reinforcing bar is inserted into the first through hole and the second through hole.

According to the invention described in claim 1, on a first shear wall built with the first block, the second shear walls constructed in the second block is constructed.
Here, the first block has a through hole vertically penetrating therein, and has an inclined plane in which the upper surface and the lower surface serving as a stacking surface are inclined from both ends toward the center, and the first hole is formed as a hole. Not split to separate in the axial direction. For this reason, the vertical reinforcing bars can be inserted into the through holes and dropped, and the inclined planes can be stacked one on top of the other.
Thereby, it is not necessary to form a through hole by combining the blocks, and it is possible to easily construct a conventional structure up to the middle position in the height direction of the earthquake-resistant wall.

On the other hand, the second block has a concave portion that forms a through hole that penetrates vertically in the fitted state, and has an inclined plane in which the upper surface and the lower surface serving as a stacking surface are inclined from both ends toward the center, It is divided into a front block and a back block. For this reason, even if the wall is located at or above the middle position in the height direction of the earthquake-resistant wall, the wall can be moved laterally from the front side and the back side, and can be laminated while surrounding the vertical reinforcing bar with the concave portion.
As a result, even if the stacking height is increased, the vertical streaks can be arranged, and a decrease in workability can be suppressed.

The method for constructing a seismic wall according to the second aspect of the present invention is a method for constructing a first earthquake-resistant wall on a beam-column structure provided with reinforcing bars in a vertical direction, and a second earthquake-resistant wall on the first earthquake-resistant wall. A method for constructing an earthquake-resistant wall , comprising: an inclined plane in which an upper surface and a lower surface serving as stacked surfaces are inclined from both ends toward a central portion ; and a chamfer formed at a lower end and an upper end of the inclined plane. Stacking the first block on top of the inclined planes up and down, constructing a first earthquake-resistant wall up to the middle level in the height direction on the construction surface of the beam-column structure, and forming recesses at the ends and the center. an inclined plane of two blocks is opposed to out-of-plane direction of the first shear wall is formed by bonding a stacked area to become upper and lower surfaces is inclined from both ends toward the center with the lower end of the inclined plane A second block having a portion and a chamfer formed at an upper end portion , Constructing a second earthquake-resistant wall on the first earthquake-resistant wall by stacking the inclined planes one on top of the other, wherein the second block is formed by combining the recesses in the central part. A first through hole that penetrates and does not open in an out-of-plane direction of the first earthquake-resistant wall, and a concave portion at the end portion where the second block faces the in-plane direction of the first earthquake-resistant wall. A second through-hole formed vertically through and not communicating with the first through-hole, and the rebar is inserted into the first through-hole and the second through-hole.

According to the second aspect of the present invention, in the step of constructing the first earthquake-resistant wall, the first block is stacked on the structural surface of the beam-column structure with the inclined planes being vertically overlapped.
Here, the first block has a through-hole penetrating vertically therein, and the upper surface and the lower surface serving as a stacking surface are provided with inclined planes inclined from both ends toward the center, and the through-hole is formed as a hole axis. Not split to separate in the direction. The first earthquake-resistant wall is constructed by a drop-down method up to the middle level (about half) of the entire height of the earthquake-resistant wall.

Subsequently, in the step of constructing the second earthquake-resistant wall, the second block is stacked on the first earthquake-resistant wall with the inclined planes being vertically overlapped.
Here, the second block has a concave portion that forms a through-hole that penetrates up and down in a fitted state, and an upper surface and a lower surface serving as a stacking surface include an inclined plane that is inclined from both ends toward the center, It is divided into a front block and a back block. The second earthquake-resistant wall is constructed by laminating a vertical streak from the horizontal direction from the middle level or higher to the uppermost level of the earthquake-resistant wall.
Thereby, since the upper surface and the lower surface which are the stacked surfaces of the first and second earthquake-resistant walls are constructed by the first block and the second block having the inclined planes inclined from both ends toward the center, Through the upper and lower surfaces, the first block and the second block can bear a lateral load as bearing.
In addition, since the second seismic wall is constructed by laminating from the horizontal direction by the second block divided in the thickness direction, vertical streaks can be arranged even in a state where the pile height is high, and workability is also improved. Can be suppressed.
The earthquake-resistant wall according to one aspect is a earthquake-resistant wall including a wall and a block wall constructed by stacking half blocks on one side surface of the wall, wherein the half blocks are stacked. An upper surface and a lower surface, which are planes, include inclined planes inclined from both ends toward the center, and a concave portion formed at an end and a center of the surface facing the wall, and the block wall includes A first through-hole formed by a recess at the center and the wall, and a half-block formed by the recess at the end and the wall with the half-block facing the in-plane direction of the wall; A second through-hole penetrating up and down, and a reinforcing wall is formed by inserting a reinforcing bar into the first through-hole and the second through-hole.

  Since the present invention has the above configuration, it is possible to suppress a decrease in workability even in a state where the pile height is high, and to provide a block, a shear wall, and a method of constructing a shear wall capable of bearing a lateral load via the upper surface and the lower surface. Can be provided.

(A) is a perspective view showing a basic configuration of a block according to the first embodiment of the present invention, (B) is one block before joining (A), and (C) is the other block. It is a front view showing the basic composition of the earthquake-resistant wall concerning a 2nd embodiment of the present invention. (A) is a perspective view of a block for constructing a first earthquake-resistant wall according to the second embodiment of the present invention, and (B) is a block diagram of a block used at left and right ends of the first and second earthquake-resistant walls. It is a perspective view. (A), (B) is a perspective view for explaining the construction procedure of the second earthquake-resistant wall according to the second embodiment of the present invention. (A), (B) is a perspective view for explaining the construction procedure of the second earthquake-resistant wall according to the second embodiment of the present invention. It is a front view which shows typically transmission of the compressive force between the blocks in the earthquake-resistant wall which concerns on 2nd Embodiment of this invention. It is a perspective view showing the construction stage of the earthquake-resistant wall concerning a 3rd embodiment of the present invention.

(1st Embodiment)
The block 10 according to the first embodiment of the present invention will be described with reference to FIGS. Here, FIG. 1A is a perspective view of the block 10, and FIGS. 1B and 1C are perspective views of the blocks 12 </ b> A and 12 </ b> B before (A) is joined at the joining surface 28.

The block 10 shown in FIG. 1A moves the joint surface 28A of the block 12A shown in FIG. 1B and the joint surface 28B of the block 12B shown in FIG. 1C in the Y-axis direction (lateral direction). This is a configuration in which they are brought into contact, overlapped, and joined with an adhesive.
In the center of the block 10, an insertion hole (through hole) 14 penetrating vertically is formed. The insertion hole 14 is a through hole through which a vertical reinforcing bar (not shown) is inserted, and is formed by a concave portion 16A of the block 12A and a concave portion 16B of the block 12B.

  The upper surface 18 serving as the stacking surface of the block 10 is formed by the upper surface 18A of the block 12A and the upper surface 18B of the block 12B, and the lower surface 20 is formed by the lower surface 20A of the block 12A and the lower surface 20B of the block 12B. The upper surface 18 and the lower surface 20 are inclined planes inclined from both ends 10R, 10L toward the center. For this reason, the block 10 is stacked with the inclined planes stacked one on top of the other.

According to this configuration, the block 10 has the upper surface 18 and the lower surface 20 serving as the stacking surfaces provided with the inclined planes inclined from both ends 10R and 10L toward the center, and will be described in a second embodiment described later. As a result, when the wall constructed by the block 10 is viewed from the front, the inclined planes are vertically overlapped and continuous in a waveform. Since this waveform is formed on the upper surface 18 and the lower surface 20 of the block 10, a plurality of the waveforms are formed in the vertical direction at intervals of the height of the block 10.
Thereby, a lateral load at the time of an earthquake or the like can be directly borne by the block 10 as bearing pressure via the inclined planes formed on the upper surface 18 and the lower surface 20.

In the center of the block 10, an insertion hole 14 that penetrates vertically is formed. The insertion hole 14 is formed in a state where the concave portion 16A of the block 12A and the concave portion 16B of the block 12B are aligned. Thereby, the block 12A and the block 12B are moved in the horizontal direction, and the vertical reinforcing bar is surrounded by the insertion holes 14 from the front side and the back side of the wall, and grout is filled in the gaps between the formed insertion holes 14. , Can build a wall. At this time, since the insertion hole 14 is bonded with an adhesive with sufficient strength, the grout filled in the insertion hole 14 does not leak outside.
As a result, the vertical rebar can be easily inserted even if the pile height is high, and a decrease in workability can be suppressed.

In this embodiment, the case where the joining surface 28 of the block 10 is formed at the center of the thickness D of the block 10 has been described. However, the present invention is not limited to this, and one of the blocks 12A and 12B may be formed in a shape thicker than the other.
Also, the case where the joining surfaces 28A, 28B are parallel to the front surfaces 24A, 24B of the blocks 12A, 12B has been described. However, the present invention is not limited to this, and the joining surfaces 28A, 28B may be inclined with the front surfaces 26A, 26B of the blocks 12A, 12B. Thereby, the surface area of the joint surface can be increased.

(2nd Embodiment)
The earthquake-resistant wall 30 according to the second embodiment of the present invention will be described with reference to FIGS.
FIG. 2 is a front view of the earthquake-resistant wall 30, FIGS. 3A and 3B are perspective views of the blocks 36 and 56, and FIGS. 4A to 5B show a construction procedure of the earthquake-resistant wall 30. It is a perspective view. FIG. 6 is a front view schematically showing transmission of the compressive force of the earthquake-resistant wall 30.

  As shown in FIG. 2, the shear wall 30 is surrounded by existing columns 32 of the building to be reinforced and existing lower beams 34D and upper beams 34U passed between adjacent columns 32. Further, it is constructed on the surface of the column-beam frame 22. The earthquake-resistant wall 30 includes a lower earthquake-resistant wall (first earthquake-resistant wall) 38 constructed at a lower portion, and an upper earthquake-resistant wall (second earthquake-resistant wall) 40 constructed above the lower earthquake-resistant wall 38. The lower earthquake-resistant wall 38 is shaded for convenience.

  The lower earthquake-resistant wall 38 is constructed by stacking the blocks 36 shown in FIG. 3A and the blocks 56 shown in FIG. 3B. The block 36 is made of precast concrete, has a vertical streak insertion hole (through hole) 42 penetrating in the up-down direction inside, and the upper surface 44 and the lower surface 46 serving as the stacking surface are located at the center from the both side surfaces 36R and 36L. It has an inclined plane that inclines toward it. The blocks 36 are stacked in such a manner that the inclined planes are vertically overlapped with each other by a drop-in method.

As shown in FIG. 3A, when the block 36 is viewed from the front, the upper surface 44 and the lower surface 46 serving as the stacking surfaces of the block 36 are inclined from both ends toward the center. It has.
In stacking (stacking), the inclined planes of the upper surface 44 and the lower surface 46 are vertically stacked. Thereby, when the lower earthquake-resistant wall 38 is viewed from the front, the inclined planes are vertically overlapped and continuous in a waveform. A plurality of such waveforms are formed in the vertical direction at intervals of the height of the blocks 36 and 56.

The upper surface 44 and the lower surface 46 of the block 36 are linearly inclined from the side surfaces 36R, 36L toward the central portion in a direction in which the central portion becomes narrower. That is, when viewed from the front, the upper surface 44 is inclined downward toward the central portion, and the lower surface 46 is inclined upward toward the central portion, and has the shape of a butterfly with spread wings. For this reason, the blocks 36 are stacked while being shifted from each other by half in the width direction in the horizontal direction.
Although not shown, the upper surface 44 and the lower surface 46 of the block 36 may have a shape linearly inclined from the side surfaces 36R, 36L toward the central portion in a direction in which the central portion becomes thicker.

  On the other hand, the front surface 48 and the back surface 50 of the block 36 are formed in parallel with each other, and when the lower earthquake-resistant wall 38 is constructed, constitute the front and rear surfaces of the lower earthquake-resistant wall 38. In addition, both side surfaces 36R and 36L of the block 36 are also formed in parallel, and when the lower earthquake-resistant wall 38 is constructed, it comes into contact with a side surface of an adjacent block 36 described later.

A vertical streak insertion hole (through hole) 42 is formed in the center of the block 36. The vertical streak insertion hole 42 is formed in a direction intersecting the upper surface 44 and the lower surface 46, and is not divided so as to be divided in the hole axis direction. This eliminates the necessity of joining the blocks, which is required when the blocks are divided. At the position where the vertical reinforcing bars 52 are arranged, the vertical reinforcing bars 52 are inserted.
In a front view of the lower earthquake-resistant wall 38, semi-cylindrical concave portions 54R and 54L are formed on both side surfaces 36R and 36L of the block 36 serving as vertical joints in a direction intersecting the upper surface 44 and the lower surface 46. The vertical reinforcing bar 52 is inserted into the concave portions 54R and 54L.
Here, the vertical reinforcing bar 52 has a length that is about half the height of the column-beam frame 22, is attached upward to the upper surface of the beam 34D, and the upper end is open.

The block 56 shown in FIG. 3B has a configuration in which the block 36 is divided into two in the vertical direction at the center in the width direction. That is, the upper surface 58 and the lower surface 60 have the same inclination as the upper surface 44 and the lower surface 46 of the block 36 and are half the size in the width direction, and the front surface 62 and the rear surface 64 are formed parallel to each other. It is half the size of the front 48 and back 50. In addition, concave portions 66R, 66L having the same diameter as the block 36 are formed in the side surfaces 56R, 56L.
The block 56 is stacked in a gap corresponding to half blocks at both ends, which occurs when the blocks 36 are stacked while being shifted by half a block in the horizontal direction.

FIG. 2 illustrates a configuration in which the grout 68 is filled in a gap between the lowermost step of the lower earthquake-resistant wall 38 and the upper surface of the lower beam 34D. However, the present invention is not limited to this. For example, a block obtained by cutting the block 36 in the horizontal direction, that is, a block having a flat bottom surface and a slope having a lower central portion than both end portions is disposed on the upper surface. (Not shown).
Thereby, the lowermost step of the lower earthquake-resistant wall 38 can be further stabilized.

  The upper shear wall 40 is constructed by stacking the blocks 10 and 56 on the lower shear wall 38. The block 10 is the block described in the first embodiment. The blocks 12A and 12B are moved in the horizontal direction, and the joining surfaces 28A and 28B are brought into contact with the vertical reinforcing bar 53 sandwiched between the concave portions, and the blocks 10 are bonded together. . Here, the vertical reinforcing bar 53 is attached to the lower surface of the beam 34U downward, and the lower end is joined to the vertical reinforcing bar 52. The vertical reinforcing bar 53 may be divided in the length direction, and the upper end of the vertical reinforcing bar 52 and the lower surface of the beam 34U may be connected while being sequentially joined by the divided vertical reinforcing bar 53.

  Thereby, the vertical bar insertion hole 14 into which the vertical reinforcing bar 53 is inserted is formed. That is, the block 10 is stacked by moving the blocks 12A and 12B in the horizontal direction from the front side and the back side of the earthquake-resistant wall 30 and vertically overlapping the inclined planes. The block 56 is stacked in a gap corresponding to half blocks at both ends, which occurs when the blocks 10 are stacked while being shifted by a half block in the horizontal direction.

  As shown in FIGS. 4A and 4B, the block 10 first surrounds the block 12A divided in the thickness direction from one side of the upper earthquake-resistant wall 40 on one side of the vertical reinforcing bar 53 with the concave portion 16A. , On the lower earthquake-resistant wall 38 from the side. As a result, it is possible to increase the load without depending on the dropping method.

Next, as shown in FIGS. 5A and 5B, the block 12B divided in the thickness direction is opposed to the block 12A from the other side of the upper shear wall 40 (for example, the back side of the upper shear wall 40). Then, it is piled up on the lower shear wall 38 from the lateral direction. Accordingly, even when the upper earthquake-resistant wall 40 is at a height equal to or higher than the intermediate position in the height direction, the vertical reinforcing bars 53 are surrounded by the recesses 16A and 16B from the front side and the rear side of the earthquake-resistant wall (wall body) 30. Can be laminated.
As a result, even when the stacking height is increased, the vertical reinforcing bars 53 can be arranged, and a decrease in workability can be suppressed.

As described above, in the earthquake-resistant wall 30, the upper earthquake-resistant wall 40 constructed by the blocks 10, 56 is constructed on the lower earthquake-resistant wall 38 constructed by the block 36.
The lower earthquake-resistant wall 38 is laminated with blocks 36 and 56. Here, the block 36 is not divided in the thickness direction so as to be separated in the hole axis direction of the vertical streak insertion hole 42. Therefore, it is not necessary to form the vertical streak insertion holes 42 by combining the blocks, and the vertical reinforcing bars 52 can be inserted into the vertical streak insertion holes 42, and the inclined planes can be stacked one on top of the other by the drop-in method.
Thus, up to the middle position in the height direction of the earthquake-resistant wall 30 can be easily constructed as before.

  In addition, the upper seismic wall 40 is laterally stacked on the lower seismic wall 38 with the block 12B divided in the thickness direction facing the block 12A from the other side of the upper seismic wall 40. As a result, it is possible to increase the load without depending on the dropping method. That is, the vertical reinforcing bars 53 can be arranged, and the upper part of the earthquake-resistant wall 30 can be constructed while suppressing a decrease in workability.

Next, a method of constructing the earthquake-resistant wall 30 will be described.
First, as shown in FIG. 2, a lower earthquake-resistant wall 38 is constructed on the column-beam frame 22.
Specifically, the vertical reinforcing bar 52 is attached so as to protrude from the upper surface of the beam 34D. The length of the vertical reinforcing bar 52 is, for example, about half the height of the earthquake-resistant wall 30 (an appropriate length in consideration of workability determined by the height of the earthquake-resistant wall 30).

  Subsequently, the blocks 36 are stacked up to a predetermined height of the vertical reinforcing bar 52 (as a guide, from the first stage to the fifth stage). At this time, the blocks 36 are inserted in the vertical streak insertion hole 42 and the concave portions 54R and 54L, and are stacked in a drop-down manner. A block 56 is stacked on the lateral end of the block 36.

Next, the upper shear wall 40 is constructed on the lower shear wall 38.
Specifically, the vertical reinforcing bar 53 is attached so as to project from the lower surface of the beam 34U. The lower end of the vertical reinforcing bar 53 is joined to the upper end of the vertical reinforcing bar 52 to form a vertical reinforcing bar continuous in the vertical direction. In a state where the vertical reinforcing bars 52 and the vertical reinforcing bars 53 are joined, the block 36 cannot be stacked because the dropping method cannot be adopted.

  Therefore, as shown in FIGS. 4A to 5B, the blocks 10 are stacked. The block 10 divides the blocks 12A and 12B, which are divided into a front side block and a back side block, from the front side and the back side of the earthquake-resistant wall 30 across the vertical reinforcing bar 53 to a height just before reaching the beam 18 in a lateral direction. be able to. The laminated blocks 12A and 12B are adhered with an adhesive so as not to separate again. If a gap corresponding to a half block occurs at the lateral end of the block 10, the block 56 is stacked.

  Finally, the grout 68 fills the gap between the column 32 and the lower earthquake-resistant wall 38 and the upper earthquake-resistant wall 40, the gap between the vertical streak insertion holes 42 of the blocks 36, 56 and 10, the recesses 44R and 44L between the blocks, and the like. (See FIG. 2). Since the block 10 is bonded with an adhesive, the grout 68 does not leak from the vertical streak insertion hole 42. The grout 68 may be filled each time the blocks 36 and 10 are stacked. After the grout 68 is hardened, the earthquake-resistant wall 30 is completed.

Next, transmission of the compressive force between the blocks 10, 36, and 56 constituting the earthquake-resistant wall 30 will be described.
As shown in FIG. 6, the upper surfaces 18, 44, 58 and the lower surfaces 20, 46, 60 of the blocks 10, 36, 56 constituting the earthquake-resistant wall 30 are provided from both ends toward the center or one end. An inclined plane is provided that slopes from the part toward the other end. When viewed from the front of the earthquake-resistant wall 30, the inclined planes are vertically overlapped with each other, and are continuous in a waveform in a lateral direction. A plurality of such waveforms are formed in the vertical direction at intervals of the height of the blocks 36 and 14.

  Accordingly, when a horizontal force (lateral load) indicated by an arrow P1 is applied to the earthquake-resistant wall 30 via one of the columns 32, the blocks 10, 36, and 56 have horizontal levels indicated by arrows P2, P3, P4,. The force sequentially acts as a supporting force along the inclined surface in the downward direction. The transmitted horizontal force is received by the other column 32 and is transmitted to the beams 34U and 34D. If the horizontal force is in the opposite direction, it is transmitted from the other column 32 to one column 32.

Thereby, the horizontal movement of the earthquake-resistant wall 30 is suppressed. That is, since the inclined planes formed on the upper surface and the lower surface of the blocks 10, 36, and 56 are vertically overlapped to form a waveform, the horizontal force indicated by the arrow P1 is applied to the blocks 10, 36, and 56 via the upper surface and the lower surface. 36, 56.
As a result, the horizontal strength and rigidity of the column-beam frame 22 can be increased.

  Note that, in the present embodiment, the configuration in which the earthquake-resistant wall 30 is built on the column-beam frame 22 formed by the existing columns 32 and the existing beams 34D and 34U has been described. However, the present invention is not limited to this, and may be constructed on the surface of a column-beam frame 22 formed of a newly-constructed column or a newly-constructed beam.

(Third embodiment)
The earthquake-resistant wall 70 according to the third embodiment of the present invention will be described with reference to FIG.
FIG. 7 is a perspective view illustrating a construction stage of the earthquake-resistant wall 70.
As shown in FIG. 7, the earthquake-resistant wall 70 has an existing wall 76, and has a configuration in which half blocks 12A and 12B described in the first embodiment are stacked on one side surface of the wall 76. The blocks 12A and 12B have a shape divided in the thickness direction, and the divided shapes are stacked so that the inclined surfaces of the upper surfaces 18A and 20B and the lower surfaces 20A and 20B are shifted by half a block in the horizontal direction. I have.

At this time, the blocks 12A and 12B can resist the horizontal force by bringing the cut surfaces 28A and 28B into contact with the wall 70, passing the vertical reinforcing bar 53 at the positions of the recesses 16A and 16B, and filling the gap with grout. Like that.
The blocks 56 described in the second embodiment are divided in the thickness direction into gaps corresponding to half blocks at both ends, which are generated when the blocks 12A and 12B are shifted by a half block in the horizontal direction. Blocks (not shown) may be stacked.

Further, at the bottom, the upper part (not shown) of the block obtained by cutting the blocks 12A and 12B in the lateral direction, which has been described in the second embodiment, may be laminated. Note that the vertical reinforcing bar 53 is not always necessary. Thereby, seismic reinforcement can be performed while suppressing an increase in wall thickness.
Note that the wall 76 may be a new wall. The wall 76 may be a reinforced concrete wall, a brick wall, a block wall, a dry wall using various boards, or the like. Further, the wall 76 and the earthquake-resistant wall 70 may or may not be integrated.
Furthermore, even if there is no existing wall 76, if a mold for filling the grout 68 can be installed in the gap, the blocks 12A and 12B are vertically stacked to fill the gap with the grout 68. Thus, the earthquake-resistant wall 70 can be constructed.

10 blocks (2nd block)
12A, 12B Block 14, 42 Vertical streak insertion hole (through hole)
16A, 16B Recessed portions 18, 44, 58 Upper surface 20, 46, 60 Lower surface 22 Column and beam frame structure 24R, 54R, 66R Recessed portions 24L, 54L, 66L Recessed portions 32 Columns 34D Lower beam 34U Upper beam 36 block (first block)
30 earthquake-resistant wall 38 lower earthquake-resistant wall (first earthquake-resistant wall)
40 Upper Shear Wall (Second Shear Wall)
56 blocks

Claims (2)

What is claimed is: 1. An earthquake-resistant wall comprising: a first earthquake-resistant wall constructed on a column-beam frame provided with reinforcing bars in a vertical direction; and a second earthquake-resistant wall constructed on the first earthquake-resistant wall,
The first earthquake-resistant wall is
A first block including an inclined plane whose upper surface and lower surface serving as a stacking surface are inclined from both ends toward a central portion, and chamfers formed at lower end portions and upper end portions of the inclined plane, the first block includes the inclined plane. It is composed by being stacked on top and bottom,
The second earthquake-resistant wall is
Two blocks each having a concave portion at an end and a center are formed by adhering and facing each other in an out-of-plane direction of the first earthquake-resistant wall, and the upper surface and the lower surface serving as a stacking surface are inclined from both ends toward the center. A second block having an inclined plane and chamfers formed at the lower end and the upper end of the inclined plane is constructed by stacking the inclined planes one on top of the other,
The second block includes:
A first through-hole, which is formed by combining the recesses of the central portion and penetrates vertically and is not opened in an out-of-plane direction of the first earthquake-resistant wall; A second through-hole that is formed by combining the concave portions of the end portions so as to face each other and that is not communicated with the first through-hole, the first through-hole and the second through-hole. The rebar was inserted into the through hole,
Shear wall. A method for constructing an earthquake-resistant wall, comprising: constructing a first earthquake-resistant wall on a column-beam frame provided with reinforcing bars in a vertical direction, and constructing a second earthquake-resistant wall on the first earthquake-resistant wall;
A first block including an inclined plane whose upper surface and lower surface serving as a stacking surface are inclined from both ends toward a central portion, and chamfers formed at a lower end and an upper end of the inclined plane. A step of stacking up and down and constructing a first earthquake-resistant wall up to the middle of the height direction on the column-beam frame surface;
An upper surface and a lower surface which are formed by adhering two blocks having recesses at an end portion and a center portion in an out-of-plane direction of the first earthquake-resistant wall and serve as a stacking surface, and wherein the upper surface and the lower surface are inclined from both ends toward the center portion. A second block having a flat surface and chamfers formed at the lower end and the upper end of the inclined plane is laminated by stacking the inclined planes up and down, and the second block is placed on the first shear wall. And a step of constructing
The second block includes:
A first through-hole, which is formed by combining the recesses of the central portion, penetrates vertically and is not opened in an out-of-plane direction of the first earthquake-resistant wall, and the second block extends along an in-plane direction of the first earthquake-resistant wall. And a second through-hole penetrating up and down and not communicating with the first through-hole formed by combining the recesses of the end portions in opposition to each other. The first through-hole and the second through-hole Penetrate the rebar,
How to build an earthquake-resistant wall.