JPH09228653A - Method for strengthening seismic resistance of buildings and seismic resistant block - Google Patents

Abstract

(57) [Abstract] [Problem] To facilitate the construction for shortening the construction period for strengthening the earthquake resistance of the structure surrounded by columns and beams. SOLUTION: An earthquake-resistant block A having an outward groove formed on the outer periphery and a part of the reinforcing bar exposed in the groove and forming a quadrilateral shape as a whole, and a mountain-shaped block forming a triangle by halving the same. A large number of B are prepared, and two diagonal lines of the seismic resistant block are individually oriented in the vertical direction and the horizontal direction on the structure surrounded by the pillars 1 and the beams 2 of the building, and the seismic resistant blocks are adjacent to each other. While making each side of each other facing each other, creating a space by the grooves of both seismic blocks,
A large number of seismic blocks A and chevron blocks B are built in, and the space formed by the concave grooves is filled with a solidifying material such as concrete mortar, and the solidifying material and the exposed reinforcing bars are connected to each other. The seismic resistance of the structure surface is enhanced by connecting adjacent seismic blocks through the two.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of building a seismic resistant block on a structure surrounded by columns and beams in a building to improve seismic resistance of the building, and a seismic resistant block used for the method.

[0002]

2. Description of the Related Art Japanese Patent Publication No. 60-1470 discloses a conventional method for improving the seismic resistance of a building by working on the structure surrounded by columns and beams. There is something like this. That is, in this conventional technique, a large number of anchor bars are projected from columns and beams of an existing building in a row along the longitudinal direction of the pillars and beams, and the anchor bars are used to distribute the anchor bars over the entire surface. Along with the reinforcement, the cast-in-place concrete is placed over the entire surface of the structure so as to cover the reinforcement and construct the earthquake-resistant wall.

[0003]

However, according to the above-mentioned conventional technique, there is a drawback that the construction period is prolonged because the concrete is cast in situ and there are many temporary materials such as formwork used. Further, according to the above-mentioned conventional technique, since the entire surface of the structure surrounded by the pillars and the beams is closed, there is a drawback that the construction cannot be performed in a place where passage of airflow and light is required.

Therefore, the present invention has been made in order to eliminate such drawbacks, and its purpose is to shorten the construction period for reducing on-site work and enhancing seismic resistance. Is to enhance the earthquake resistance while allowing airflow and light to pass through the structure surrounded by columns and beams.

[0005]

According to a first aspect of the present invention, there is provided a method for enhancing seismic resistance of a building, wherein an outer concave groove is formed on the outer periphery and a part of the reinforcing bar is exposed in the concave groove. Prepare a large number of seismic blocks that form a quadrilateral as a whole. Then, the two diagonal lines of the seismic resistant block are individually oriented in the vertical direction and the lateral direction, and each side of the adjacent seismic resistant block is opposed to the structure surrounded by the pillars and beams of the building. By building a large number of the seismic resistant blocks while creating a space between the concave grooves of both seismic resistant blocks, the space formed by the concave grooves is filled with a solidifying material such as concrete mortar, Seismic blocks adjacent to each other are connected to each other through the material and the exposed reinforcing bar.

The procedure of each work of building the seismic resistant block and filling the solidifying material is arbitrary. For example, the solidifying material may be filled after all the seismic resistant blocks have been built, or the operation of filling the solidifying material may be repeated every time some of the seismic resistant blocks are built. When building up several stages of seismic blocks, repeating the building and filling for each stage will make it easier to fill the space with the cement by the grooves of the seismic blocks.

According to a second aspect of the present invention, a large number of seismic resistant blocks each having an outward groove formed on the outer periphery thereof and having a quadrilateral shape as a whole are prepared, and the seismic resistant block is provided on a structure surrounded by columns and beams of a building. The two diagonal lines of the above are individually oriented in the up-down direction and the left-right direction, and by making each side of adjacent seismic blocks to face each other, while creating a space by the grooves of both seismic blocks, A seismic block is built in, at this time, reinforcing bars are housed in the concave grooves, and a space formed by the concave grooves is filled with a solidifying material such as concrete mortar, and the solidifying material and the reinforcing bars. The seismic blocks adjacent to each other are connected via and. In this case, the seismic resistant block does not require an exposed reinforcing bar, and the reinforcing bar is housed in the groove. Therefore, the seismic resistant block itself can be made thin and lightweight.

According to a third aspect of the present invention, the seismic resistant block of the first aspect of the invention is formed in a triangular shape, and one side of the seismic resistant block is installed in a posture in which the side is parallel to a pillar or a beam. Same as 1. The invention of claim 4 uses a plurality of earthquake-resistant blocks, each of which has an outwardly facing concave groove formed on two V-shaped sides and a part of the reinforcing bar is exposed in the concave groove to form a triangular shape as a whole. A structure surrounded by pillars and beams of a building, with the two sides of the seismic resistant block along the diagonal of the structure and the other open side along the pillar or beam, and The plurality of seismic resistant blocks are built while the adjacent seismic resistant blocks are made to face each other to form a space by the grooves of the seismic resistant blocks. The point that the space formed by the grooves is filled with a solidifying material such as concrete mortar and the adjacent seismic blocks are connected via the solidifying material and the exposed reinforcing bars. And the same as claim 3.

According to a fifth aspect of the present invention, one of the flange portions on both sides of the seismic block used in the first to third aspects is formed to be lower than the other flange portion formed on both sides of the seismic block with a groove in between. The space formed by the biconcave grooves facing each other of the two seismic blocks is opened larger than the other on one of the front and back sides of the construction surface, and diagonal grid lines are arranged from this opened portion to the space, or The seismic resistant block is built by passing the low flange portion between the lattice bars arranged in advance.

When the seismic resistant block is first built and then the diagonal lattice reinforcement is arranged, the diagonal lattice reinforcement is formed from the open portion between the adjacent seismic blocks to the space formed by the concave groove. It is possible to place the reinforcement inside, and if the diagonal lattice reinforcement is to be preceded, a seismic resistant block will be inserted between the lattice reinforcements, but a flange with a low height will be used. By building the seismic resistant block through the lattice-shaped space, the reinforcing bars are located in the grooves of the built seismic resistant block.

The invention of claim 6 is the invention of claims 1, 2, 3, and 5.
In the method according to any one of the above, the seismic resistant block, a window-shaped hole penetrating the front and back is formed in the central portion of the outer peripheral portion where the concave groove is formed in a frame shape, and the window-shaped hole and the A through hole is formed between the seismic block and the groove, and fasteners are connected to the through holes of adjacent seismic blocks to connect the seismic blocks.

Since the front and back sides of the structure surrounded by the columns and the beams by the window-like holes communicate with each other, the air flow and the light pass therethrough. Further, since the adjacent seismic blocks are connected by fasteners such as bolts and nuts, the connecting strength between the seismic blocks increases. The invention according to claim 7 is the method according to any one of claims 1, 2, 5 and 6, wherein the seismic resistant block is provided in a triangular space formed between a pillar or a beam and a quadrilateral seismic resistant block. A mountain-shaped block formed with two continuous sides is built, and this mountain-shaped block and earthquake-resistant block are
The seismic blocks are connected in the same manner as the above connection.

If a quadrilateral seismic block is built so that the two diagonal lines face up and down and left and right, a triangular space will be created between the seismic block and the pillar or beam. Build blocks. The chevron block has a shape obtained by cutting the seismic block along, for example, a diagonal line. Therefore, the chevron block has the same concave grooves as those of the seismic block on two sides, and the reinforcing bars are exposed there. The space formed between the groove and the seismic block groove is filled with the solidifying material.

An eighth aspect of the present invention relates to a seismic resistant block directly used for carrying out the method of the present invention, wherein the seismic resistant block has an outward groove formed on an outer periphery thereof and a part of a reinforcing bar is formed in the groove. It is exposed to make a quadrangle as a whole. When the quadrilateral of the seismic block is specified as a square, the seismic blocks are built so that the two diagonals of the block are vertical and horizontal, so that the seismic blocks are contiguous to each other at a 45-degree angle within the premises while adjoining the sides. Therefore, it has a function of bracing with respect to columns and beams.

According to a ninth aspect of the present invention, the seismic resistant block has a triangular shape, and the outer peripheral groove is the same as that of the eighth aspect. The invention of claim 10 includes an earthquake-resistant block,
An outward groove is formed on two sides of the V-shape, and a part of the reinforcing bar is exposed in the groove to form a triangular shape as a whole.
According to the invention of claim 11, a window-shaped hole is formed in which an outer concave groove is formed on the outer periphery and is polygonal as a whole, and the outer peripheral portion where the concave groove is formed is left in a frame shape to penetrate the front and back sides in the central portion. Is formed. Unlike the seismic block according to claims 8 to 10, a part of the reinforcing bar is not exposed in the groove, and therefore, the reinforcing bar is reinforced by separately accommodating the reinforcing bar in the groove. In this case, the seismic block can be made thin and lightweight.

The invention of claim 12 is the invention of claims 8, 9, and 1.
For either of the seismic resistant blocks 0 and 11, one of the flange portions on both sides formed by sandwiching the concave groove on the outside of each side is formed by two concave grooves that are adjacent to each other and that are adjacent to each other. It is formed lower than the other so that the space to be opened can be wide open on either the front or back. A thirteenth aspect of the present invention is the earthquake-resistant block according to any of the eighth, ninth and twelfth aspects, in which a window-shaped hole penetrating through the front and back is formed in the central portion while leaving a portion of the outer periphery where the groove is formed in a frame shape. A through hole for inserting a fastener is formed between the window-shaped hole and the groove.

[0017]

1 to 8 are views showing a first embodiment, in which an earthquake-resistant block is installed on a structure surrounded by columns and beams in an existing building, and the earthquake resistance of the building is reduced. The form that strengthens the sex is explained. First, FIG. 1 shows a pillar 1 and a beam 2.
An example is shown in which 22 seismic resistant blocks A, 15 chevron blocks B, and 2 partial blocks C are built on the construction surface surrounded by and. In FIG. 1, only one surface of each of the blocks A, B, and C is shown in black, but this is for the sake of easy understanding. Therefore, in practice, all blocks have the same color. The pillar 1 and the beam 2 are made of steel-framed concrete, reinforced concrete or steel-framed reinforced concrete, and the vicinity of the upper surface of the lower beam 2 is the floor level FL of the floor shown in FIG.

Each of the blocks A, B, and C is made of precast concrete and has the following structure. That is, as shown in FIG. 2, the seismic resistant block A has a square frame-shaped body as a whole, and each of the four sides forms a flange portion 3 on the front surface side and a flange portion 4 on the back surface lower than this. , The bottom portion 5 connecting the flange portions 3 and 4 to each other, and the seismic resistant block A is formed with an outward recessed groove 6 on the outer periphery thereof and a window-shaped hole 7 penetrating between the front and back in the central portion thereof. To be done. Further, a through hole 8 is formed in the bottom portion 5 so as to penetrate between the window-shaped hole 7 and the recessed groove 6, and a part of the stirrup 9 is exposed between the flange portions 3 and 4.
The stirrup 9 is a specific example of the reinforcing bar which is a component of the present invention, and is wound around the main bar 11 embedded in the seismic resistant block A as shown in FIG. 5, and a part thereof is as described above. Exposed.

As shown in FIG. 3, the mountain-shaped block B has a form in which the seismic resistant block A is divided into two and is composed of two continuous sides. Therefore, the flange portion 3 on the front surface side, the flange portion 4 on the rear surface side, the bottom portion 5, the concave groove 6, the through hole 8, and the stirrup 9 are all the same as those of the seismic resistant block A. Corresponding to the window-shaped hole 7 of the seismic resistant block A, the triangular block 7 has a triangular hole 7a formed between two sides thereof.
Thus, the cross section of the chevron block B also appears the same as that shown in FIG. Note that the isosceles triangular chevron block B may be integrally provided with a bottom portion as shown by a chain line in FIG.

Further, as shown in FIG. 4, the partial block C is a state in which the chevron block B is further divided into two parts and is composed of one side thereof, that is, the seismic resistant block A is divided into each side and the one side thereof is divided. It is in the configured state. Therefore, the flange portion 3 on the front surface side, the flange portion 4 on the rear surface side, the bottom portion 5, the concave groove 6, the through hole 8, and the strip 9 are all the same as those of the seismic resistant block A and the chevron block B.

Left and right pillars 1 and upper and lower beams 2 that form a frame as a whole
An outer end frame 12 is provided inside the and. The outer end frame 12 has a cross section of the lower beam 2 shown in FIG. 6, but the anchor bars that are implanted in each column 1 and each beam 2 in two rows along their longitudinal direction. 13, a main bar 14 extending in the longitudinal direction, a band bar 15 connecting these, and a cast-in-place concrete 16 that is cast so as to cover these reinforcing bars 13, 14, 15. Consists of. As will be described later, the concrete 16 is placed after at least the blocks A, B, and C located at positions close to the pillar 1 and the beam 2 are installed, and
Until B and C are built and the diagonal lattice bars 17 to be described later are laid out, the anchor bars 13, the main bars 14 and the stirrup bars 15
Has been arranged.

Next, a procedure for building the seismic resistant block A, the mountain block B, and the partial block C in the construction plane surrounded by the columns 1 and the beams 2 will be described. First, an anchor bar 13, a main bar 14, and a band bar 15 for forming the outer end frame 12 are applied to the column 1 and the beam 2, and the lattice bar is formed in the structure surrounded by the column 1 and the beam 2. Bar 17 is arranged. The grid lines 17 are inclined at an angle of 45 degrees which is the same as the angle of each side of the seismic resistant block A, and are arranged at the same pitch as the length of one side of the flange portion 3 on the surface side of the seismic resistant block A to form an oblique lattice shape. To do. The lattice muscles 17 are fixed to the anchor muscles 13 or the cords 15. In this state, the grid formed by the grid lines 17 is the seismic block A
Corresponds to the shape and size of the surface of.

Next, a chevron block B is formed on the upper surface of the lower beam 2.
, With its top facing up. Yamagata Block B is
It is built in the space of the isosceles triangle formed by the lattice reinforcement 17 and the main reinforcement 14 on the lower beam 2. At this time, the chevron block B is set in a state in which the front surface side flange portion 3 is on the front side and the rear surface side flange portion 4 is directed toward the lattice streak 17 side.
It is inserted from before the lattice muscle 17 to between the lattice muscles 17. Since the height of the flange portion 4 on the back surface side is lower than that of the flange portion 3 on the front surface side, the flange portion 4 can be inserted between the lattice reinforcements 17 and the side opposite to the lattice reinforcements 17. Then, the chevron blocks B may be placed on the stirrups 15 when the lattice streaks 17 reach the concave grooves 6.

In this way, in the case shown in the figure, after a total of 6 chevron blocks B are built in 6 places, a total of 5 seismic blocks A are built between the chevron blocks B. The seismic resistant block A is installed by inserting it from the flange portion 4 on the back surface side into the square space formed by the lattice bars 17 in the same manner as the building of the chevron block B, and is installed in advance. The lower two sides of the seismic resistant block A are placed so as to face the recessed grooves 6 of the mountain-shaped block B. In addition, a space of an isosceles triangle whose base is vertical is formed between the grid lines 17 and the pillar 1 at a portion near both the pillars 1 at the same height as the seismic resistant block A. Here, a mountain shape is formed. The block B is built with its bottom side along the pillar 2. This will build the second stage.

Here, between the first-stage chevron-shaped block B and the second-stage seismic-resistant block A and chevron-shaped block B, a rectangular cylindrical space is formed by the concave grooves 6 facing each other, and inside thereof. The grid lines 17 are in a passing state. Therefore, the spaces formed by the facing concave grooves 6 are penetrated, and the bolts 18 are inserted into the through holes 8 of both blocks and fastened with a nut (not shown) to connect the blocks. The through hole 8 has a stepped diameter at the end opposite to the recessed groove 6, and the head or nut of the bolt 18 is located at this enlarged diameter portion. By filling the mortar, the head or nut of the bolt 18 is blinded.

Next, the mortar cement 19 as a solidifying material is filled in the rectangular space formed by the groove 6. This filling can be performed from the upper end of the rectangular tube-shaped space, and depending on the fluidity of the mortar cement 19, the gap between the opposite flange portions 4 on the rear surface side is wide, so that the filling can be performed from here. Good. In the case of performing the filling from the upper end of the rectangular tube-shaped space, the space between the flange portions 3 on the front surface side in advance,
It is advisable to sandwich a seal material made of a string-like foamed plastic or the like between the flange portions 4 on the back surface side, and when the filling is performed from between the flange portions 4 on the back surface side, The sealing material may be sandwiched between the side flange portions 3 in advance, and the sealing material may be sandwiched between the rear surface side flange portions 4 immediately after the filling. These sealing materials are unnecessary when the fluidity of the mortar cement 19 is not good, that is, when there is no risk of leakage.

The filling of the mortar cement 19 may be performed after the blocks are piled up to a predetermined height and below the blocks, or all the blocks are piled up to the upper beam 2 and then the whole block is piled up. It may be filled. In the latter case, since the area to be filled is long, it can be carried out by press-fitting the mortar cement 19 in some cases.

Thus, the seismic resistant block A and the mountain block B are sequentially built from bottom to top, and finally the partial blocks C are respectively built at the two corners of the upper beam and both columns 1. The fact that this partial block C is also inserted into the space from the flange portion 4 on the rear surface side is the same as that of the seismic resistant block A and chevron block B, and the partial block C also has its concave groove 6
, Mortar cement 19 is filled between the adjacent groove 6 of the seismic resistant block A, and the blocks A and C are connected by the bolt 18 and the nut.
Between the flange portions 4 on the rear surface side of C and the flange portion 3 on the front surface side
A sealing material is sandwiched between them.

In FIG. 1, if the upper beam 2 is lowered and the lower surface of the outer end frame 12 on the lower side of the upper beam 2 is lowered to the position of the chain line 12a, the partial block C becomes useless. . In this case, the number of seismic blocks A used decreases by 6 and the number of chevron blocks B increases by 1. As described above, the partial block C is unnecessary depending on the relationship between the vertical and horizontal dimensions of the construction surface and the dimensions of the seismic resistant block A and the chevron block B.

When the seismic resistant block A and the chevron block B are installed, the installation device 20 shown in FIG. 7 can be used to save labor. This device is a traveling device,
It is provided with a steering device, a support mechanism for hanging and supporting the blocks A and B, and an elevating device for elevating the support mechanism. Desirably, all power is supplied by electric power, and remote operation by an operator is possible. It should be possible.

Thus, after the predetermined blocks A, B, and C have been built, the front and back sides of the anchor bar 13, main bar 14, and band bar 15 of the column 1 and the beam 2, that is, the column 1 and the beam 2.
Form frames (not shown) are arranged on both sides in the width direction, and the cast-in-place concrete 16 is placed here. With this concrete 16, the earthquake-proof block A, the chevron block B, and the partial block C are integrated with the outer end frame 12. In addition, if the sealing material is interposed between the flange portions 3 on the front surface side and between the flange portions 4 on the rear surface side of the adjacent blocks, they are removed or buried. Finally, joints are applied, and the form for the outer end frame 12 is removed to complete the work.

The above procedure is merely an example, and it goes without saying that another procedure may be adopted. For example, after the seismic resistant block A, the mountain block B, and the partial block C are first built in the structure surrounded by the pillar 1 and the beam 2, the lattice reinforcement 17 is inserted from between the flange portions 4 on the back surface side. May be. Further, after the lowest mountain-shaped block B of the construction surface is built, it may be built in the direction of 45 degrees from bottom to top right in the order from right to left of the construction surface (see FIG. 7). In this case, since a series of concave grooves 6 are formed between the upper and lower beams 2 by blocks arranged at an angle of 45 degrees, grid lines 17 may be arranged in the continuous concave grooves 6 at this stage. . In this case, the grid line 17 that intersects with the grid line 17
Will be laid out in advance or will be laid out later.

Further, the concave groove 6 of each of the blocks A, B and C has a rectangular shape having a cross section close to a trapezoid. However, when the concave groove 6 is replaced with a semicircular shape, the space formed by the opposed concave grooves 6 becomes smaller. The cross section becomes circular. Further, as the reinforcing bar exposed in the groove 6, a part of the stirrup 9 is made to correspond to this in the illustrated example, but other reinforcing bar may be used as long as it is exposed in the groove 6. Of course. Further, although the seismic resistant block A has a square shape in the front, it may be a rhombus in the front. In this case, as the mountain-shaped block B, the angle of each side is different between the one that is built with the top portion facing up or down and the one that is built with the top portion facing right or left.

FIG. 9 is a diagram showing a second embodiment. That is, the size of seismic block A and chevron block B is
This is an example in which the blocks A and B are larger than those in FIGS. 1 to 8 with respect to the dimension of the structure surrounded by the pillar 1 and the beam 2.
A short block D, an L-shaped block E, and a triangular block F are used to fill up the shortages, so that a grid is formed as a whole. The short block D, the L-shaped block E,
Of course, in the triangular block F, a flange portion on the front surface side, a flange portion on the back surface side, and a groove are formed in the portion where the adjacent blocks face each other, as in the blocks shown in FIGS. The rest of the configuration and operation are the same as those of the first embodiment shown in FIGS.

In both of the above embodiments, the seismic resistant block A is provided with the window-shaped hole 7. However, the seismic resistant block of claim 1 is not limited to the presence or absence of the window-shaped hole 7. It may be a seismic block that does not have 7, or even if there is a window-like hole 7, its shape is not a square as described above, but a shape similar to a circle, another polygon, or something. May be When the window-shaped hole 7 is provided, not only the structure surrounded by the pillar 1 and the beam 2 has an open impression, but also the airflow and the light can pass therethrough.

Thus, according to the above two embodiments, the brace between the pillar 1 and the beam 2 or between the upper and lower beams 2 is formed by the sides of each block continuing in the direction of 45 degrees. The shear stress in the construction plane can be enhanced. FIG. 10 is a diagram showing a third embodiment and corresponds to the invention of claims 2 and 8. Here, a triangular seismic block G is used. The seismic resistant block G has an equilateral triangular front surface, and the sectional shape and structure of each side are the same as the seismic resistant block A. Then, twelve seismic blocks G are built on the construction surface surrounded by the pillars 1 and the beams 2, and like the chevron blocks B in the first embodiment, the seismic blocks G are halved. It has four built-in H's. The cross-sectional shape of the two sides of this chevron block H is the same as that of the seismic resistant block G. Between the seismic resistant blocks G and between the seismic resistant blocks G and the chevron-shaped blocks H, as in the first embodiment, grid lines are arranged corresponding to the shapes of the blocks G and H. Since the construction procedure including the filling of cement mortar and the mutual fastening with bolts and nuts is the same as that of the first embodiment,
Duplicate description is omitted. The third shown in FIG.
In the embodiment, if a predetermined strength can be secured by the diagonal lattice streaks, the bar is arranged in the space defined by the horizontal groove formed between the upper blocks G and H and the lower blocks G and H in the construction plane. You don't have to. Further, although the seismic resistant block G is an equilateral triangle here, it may be an isosceles triangle.

FIG. 11 is a diagram showing a fourth embodiment,
The invention corresponds to claims 3 and 9. Here, seismic blocks I and J that are V-shaped and have a triangular shape as a whole are composed of two sides.
Are used two by two. Seismic blocks I and J differ in the angle of two V-shaped sides. Seismic block I has an obtuse angle and seismic block J has an acute angle.
It is set to 0 degrees. The cross-sectional shape and structure of each of these sides are the same as the seismic resistant block A of the first embodiment, and in particular, the seismic resistant blocks I and J are different from the chevron block B of the first embodiment in the mutual angle and length of each side. However, it is approximated in that it is composed of two V-shaped sides.

The building of the seismic resistant blocks I and J on the construction surface, the filling of the concrete mortar into the space formed by the concave groove, the fastening of the adjacent blocks with the bolts and nuts, etc. are the same as in the first to third embodiments. However, a total of four seismic blocks I, J are built with their vertices facing the center in the up, down, left, and right directions of the structure surrounded by the pillar 1 and the beam 2, so that the opposing sides are the pillar 1 and the beam. It forms a brace that connects the two intersections. Therefore, the lattice streak 1 in the first embodiment
Needless to say, the reinforcing bar corresponding to 7 is also provided at the position connecting the intersection of the pillar 1 and the beam 2. Other configurations and operations are the same as those in the first embodiment.

Each block A to I in each of the above embodiments
It is also possible to form the cross section of the above as shown in FIG. That is, this is an example in which the thickness of each of the blocks A to I is reduced to reduce the weight thereof, and the reinforcing bar composed of the band bar 9 and the main bar 11 is independently accommodated in the groove 6. In this case, each block A ~
Within the wall thickness of I, embed a reinforcing bar with a thinness that does not damage itself during handling such as transportation of the block.
In some cases, it is not necessary to bury it.

Since each block in each of the above-described embodiments is made of precast concrete and is manufactured in a factory, a formwork is installed on the entire construction surface at the site, and cast-in-place concrete is placed inside the formwork. The work required in the prior art is not necessary, and the amount of temporary materials such as the ends that support the formwork can be reduced, which simplifies the construction and shortens the construction period.

[0041]

According to the inventions of claims 1 to 4, a large number of pre-prepared seismic blocks are built on the structure surrounded by columns and beams to enhance the seismic resistance of a new or existing building. Therefore, it is not necessary to install the formwork on the entire construction surface, and to cast the cast-in-place concrete into the formwork, and it is possible to reduce the number of temporary materials such as the ends that support the formwork. Therefore, the construction is simplified and the construction period is shortened. Moreover, since the seismic resistant block extends diagonally with its sides in contact with each other, the function as a brace is enhanced in the premises and the seismic resistance can be sufficiently enhanced.

According to the fifth aspect of the present invention, in addition to the effects of the first to fourth aspects, one flange portion forming the concave groove of the seismic resistant block is lower than the other flange portion. It will be easier to place it in the groove,
The seismic resistance is further enhanced by the reinforcing function of the diagonal lattice bars. According to the invention of claim 6, claims 1 to 4
In addition to the above effect, the window-shaped hole opens the structure surrounded by the pillars and beams, which allows airflow and light to pass therethrough and is suitable not only for air conditioning and daylighting but also for a feeling of openness. Excel. In addition, the seismic resistance can be further enhanced because the seismic resistance can be fastened between the adjacent seismic blocks.

According to the invention of claim 7, since a mountain block is used in addition to the quadrilateral seismic resistant block, it can be adjacently combined with the quadrilateral seismic resistant block at the peripheral portion of the construction surface. Therefore, it is possible to uniformly reinforce the entire structure surface as compared with the case of using only the quadrilateral seismic block. According to the inventions of claims 8, 9, 10 and 12, a space is formed between the seismic blocks adjacent to each other by the recessed grooves facing each other, and the reinforcing bar is exposed in this space. By filling the binder, each seismic block can be planarly integrated on the structure surrounded by columns and beams. In particular, according to the invention of claim 10, since the V-shaped central space serves as a window, the structure surrounded by the pillars and beams is opened, so that airflow and light can pass therethrough, and the air conditioning and daylighting can be performed. It is not only suitable for, but also has an excellent open feeling.

According to the invention of claim 11, since a part of the reinforcing bar is not exposed in the groove of the block, the reinforcing bar can be housed independently in the groove. In this case, Makes it possible to make the block thinner and lighter. According to the twelfth aspect of the present invention, when reinforcing bars are arranged between adjacent seismic blocks, the reinforcing bars are arranged between the built-in seismic blocks by passing between the lower flanges, or Since the seismic resistant block can be built by passing the lower flange between them, the reinforcement or seismic resistant block can be easily installed.

According to the thirteenth aspect of the invention, since a large number of window-shaped holes are formed in the surface on which a large number of seismic resistant blocks are built, there is a feeling of liberation and it becomes possible to allow airflow and light to pass. It is convenient for air conditioning and lighting. Further, since a fastener such as a bolt can be passed through the through hole by using the window-shaped hole, there is an effect that a large number of seismic blocks can be firmly connected.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment.

FIG. 2 is a perspective view of the seismic block shown in FIG.

3 is a perspective view of the chevron block of FIG. 1. FIG.

FIG. 4 is a perspective view of a partial block of FIG.

FIG. 5 is an enlarged cross-sectional view showing a connection state between blocks of the same type or different types among the seismic resistant block, the mountain block, and the partial blocks of FIG. 1.

FIG. 6 is a vertical cross-sectional view showing a connection state between the lower beam in FIG. 1, the outer end frame above the lower beam, and the seismic block or chevron block.

FIG. 7 is a perspective view showing a state in which each block of FIG. 1 is built.

FIG. 8 is a perspective view showing the state of the bar arrangement shown in FIG.

FIG. 9 is a front view showing a second embodiment.

FIG. 10 is a front view showing a third embodiment.

FIG. 11 is a front view showing a fourth embodiment.

FIG. 12 is a cross-sectional view showing a fifth embodiment.

[Explanation of symbols]

 A Seismic block B Yamagata block C Partial block D Short block E L block F Triangular block G Seismic block H Yamagata block I Seismic block J Seismic block 1 Column 2 Beam 3 Front side flange 4 Backside flange 5 Bottom 6 Recessed groove 7 Window-shaped hole 8 Through hole 9 Strip bar 12 Outer end frame 17 Lattice bar 18 Bolt 19 Concrete mortar

Claims (13)

[Claims] 1. A large number of seismic blocks, each of which has a quadrilateral shape as a whole, in which an outward groove is formed on the outer periphery and a part of the reinforcing bar is exposed in the groove and are surrounded by columns and beams of a building. The two diagonal lines of the seismic block are oriented in the vertical direction and the horizontal direction, respectively, and the adjacent grooves of the seismic blocks are made to face each other by facing each other. While creating a space by building a large number of seismic blocks, the space formed by the grooves is filled with a solidifying material such as concrete mortar, and the solidifying material and the exposed reinforcing bar are A method for strengthening seismic resistance of a building, characterized by connecting adjacent seismic resistant blocks via a block. 2. A large number of seismic resistant blocks each having a quadrilateral shape with an outward groove formed on the outer periphery thereof are prepared, and two diagonal lines of the seismic resistant blocks are provided on a construction surface surrounded by columns and beams of a building. The above-mentioned many seismic blocks are built while the space is made by the grooves of both seismic blocks by facing each side of the seismic blocks adjacent to each other in the posture of vertically and horizontally At this time, a reinforcing bar is housed in the concave groove, and a space formed by the concave grooves is filled with a solidifying material such as concrete mortar, and the solidifying material and the reinforcing bar are adjacent to each other. A method for strengthening the seismic resistance of a building, characterized by connecting the seismic resistant blocks together. 3. A large number of earthquake-resistant blocks, each having an outwardly facing groove formed on the outer periphery thereof and a part of the reinforcing bar being exposed in the groove and forming a triangular shape as a whole, are provided and surrounded by columns and beams of a building. On the construction surface, in a posture in which one side of the seismic block is parallel to the pillar or beam, and by making each one side of the adjacent seismic blocks face each other, while creating a space by the concave grooves of both seismic blocks, A large number of seismic blocks are built, and the space formed by the grooves is filled with a solidifying material such as concrete mortar, and each seismic block is adjacent to the solidifying material and the exposed reinforcing bars. A method for strengthening seismic resistance of a building, which is characterized by connecting together. 4. A plurality of seismic blocks, each of which has an outward groove formed on two V-shaped sides and a part of a reinforcing bar is exposed in the groove and forms a triangular shape as a whole, are prepared. In the structure surrounded by the beams, the two sides of the seismic block are in a posture along the diagonal line of the structure, and each side of the adjacent seismic blocks is opposed to each other so that space is formed between the grooves of the seismic blocks. While building the plurality of seismic resistant blocks, the space formed by the recessed grooves is filled with a solidifying material such as concrete mortar, and through the solidifying material and the exposed reinforcing bars. A method for strengthening seismic resistance of a building, characterized by connecting adjacent seismic blocks. 5. A bi-concave groove in which two adjacent seismic blocks are opposed to each other, in which one of the flange portions formed on both sides of the seismic block on both sides of the groove is formed lower than the other flange portion. The space formed by is larger than the other in either one of the front and back sides of the construction surface, and diagonal grid lines are arranged from this opened part to the space, or the space between the grid lines arranged in advance is lower. The seismic resistance enhancing method for a building according to any one of claims 1 to 4, wherein the seismic resistance block is built by passing a flange portion. 6. The seismic resistant block has a window-shaped hole penetrating from the front to the back in the center thereof while leaving a portion of the outer periphery where the recessed groove is formed in a frame shape, and between the window-shaped hole and the groove. 6. A through hole is formed in each of the seismic blocks, and a fastener is connected to the through holes of adjacent seismic blocks to connect the seismic blocks to each other. Method of strengthening earthquake resistance of buildings. 7. A chevron block having two continuous sides of the seismic block is built in a triangular space formed between a column or a beam and the quadrilateral seismic block,
7. The method for strengthening seismic resistance of a building according to claim 1, claim 2, claim 5 or claim 6, wherein the chevron block and the seismic block are connected in the same manner as the connection of the seismic blocks. 8. A seismic resistant block characterized in that an outward groove is formed on the outer periphery and a part of the reinforcing bar is exposed in the groove to form a quadrangle as a whole. 9. A seismic resistant block, characterized in that an outward groove is formed on the outer circumference and a part of the reinforcing bar is exposed in the groove to form a triangular shape as a whole. 10. A seismic resistant block, characterized in that an outward groove is formed on two sides of a V-shape and a part of the reinforcing bar is exposed in the groove to form a triangle as a whole. 11. An outward groove is formed on the outer periphery and is formed into a polygonal shape as a whole, and a window-shaped hole penetrating through the front and back is formed in the central portion while leaving the outer groove portion where the groove is formed in a frame shape. Seismic block characterized by having done. 12. One of the two flange portions formed on both sides of the groove on the outer side of each side is a space formed by the two concave grooves of two adjacent seismic blocks facing each other. 12. The structure is formed so that it is lower than the other so as to open wide in
Seismic block described in any of. 13. A window-shaped hole penetrating through the front and back is formed in the center while leaving a portion of the outer periphery where the groove is formed in a frame shape, and a fastener is inserted between the window-shaped hole and the groove. 10. A through hole is formed to allow the through hole to be formed.
Alternatively, the seismic resistant block according to claim 12.