JP2864002B2 - Seismic retrofitting method and its equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seismic retrofitting method and a seismic retrofitting method used to further reinforce the seismic structure of an existing building, and is particularly applicable to the retrofitting of an ineligible existing building. The present invention relates to a suitable seismic reinforcement method and its device.

[0002]

2. Description of the Related Art Generally, when a window frame or the like is mounted on a wall between adjacent columns, an opening 4 is formed in a wall 3 between adjacent columns 1 and 2 as shown in FIG. And a method of mounting and fixing a window frame or the like to the opening 4. Therefore,
A waist wall 3a up to the floor 5 is formed below the opening 4, and a descending wall 3b up to the ceiling 6 is formed above the opening 4.

[0003] In an existing building constructed in accordance with conventional laws and regulations, each pillar 1, 2 and each wall 3a, 3b are provided.
Are rigidly connected to each other, in the event of an earthquake or the like, a large load is concentrated on the portion corresponding to the opening 4, and the columns 1 and 2 are seated at this portion. There are problems such as bowing.

Accordingly, in Japan, the "Law Concerning the Promotion of Seismic Retrofitting of Buildings" has been enacted to promote the seismic diagnosis and retrofitting of existing ineligible buildings. Existing non-compliant buildings that do not conform to the earthquake-related regulations in buildings that are used are designated as specific buildings, and the owners of the specific buildings are asked to "perform an earthquake-resistant diagnosis and carry out seismic repair as necessary. Must be done. "

[0005]

By the way, in a building as shown in FIG. 15, as a method for preventing the buckling of each of the columns 1 and 2, for example, as is carried out with a pillar on a highway, It is conceivable to reinforce a portion corresponding to the opening 4 of each of the columns 1 and 2 with a reinforcing material. In this method,
The stress may be concentrated on portions other than the reinforcing portions of the columns 1 and 2, and the installation of the reinforcing material may increase the weight of the entire building, which may decrease the earthquake resistance and increase the cost. At the same time, the construction period is prolonged, which is not always a practical method.

A possible method is to use a flexible connection structure between the columns 1 and 2 and the wall so that the columns 1 and 2 can flex freely in the event of an earthquake or the like to prevent buckling. The buckling of the columns 1 and 2 is most affected by the waist wall 3a having a large vertical dimension, not the falling wall 3b having a small vertical dimension. Therefore, if the slits 7 and 8 are provided in the portion near the pillars 1 and 2 of the waist wall 3a and the waist wall 3a and the pillars 1 and 2 have a flexible joint structure, the seismic resistance of the existing ineligible building can be improved. It is expected that the property can be improved and a qualified building can be obtained.

The present invention has been made in view of such a situation, and can improve the seismic resistance of an existing ineligible building at a low cost and in a short construction period, and may increase the weight of the entire building. The aim is to provide a non-seismic reinforcement method and its equipment.

[0008] Another object of the present invention is to ensure sufficient flexibility even when the inside of the slit is filled with padding.

Another object of the present invention is to prevent water from entering from the slit portion.

It is another object of the present invention to improve workability.

Another object of the present invention is to prevent a wall body from falling down to the outside of the room due to an earthquake or the like.

Another object of the present invention is to prevent the possibility of obstructing the flexible joint structure between the wall side and the column side even if the wall side and the column side are firmly connected by the fall prevention member.

Another object of the present invention is to make it easy to carry out the construction and to obtain the desired effect of improving the earthquake resistance.

It is another object of the present invention to improve the fire resistance of a slit or a partial slit.

Another object of the present invention is to improve the installation stability of the cushion member in the slit.

Still another object of the present invention is to provide a partial slit without impairing the original function of the wall and ensuring sufficient flexibility.

[0017]

According to the present invention, in order to achieve the above object, a slit is provided in a wall near a pillar in a vertical direction, and a slit penetrating in a wall thickness direction is provided, and at least the outdoor side of the slit is waterproofly sealed. It is characterized by doing so. By providing the slits, the pillar side and the wall side have a flexible joint structure, and it is possible to improve the earthquake resistance with a low cost and a short construction period, and there is no possibility of increasing the weight of the whole building. In addition, it is possible to prevent water from entering from the slit portion.

The present invention is also characterized in that a cushion member is arranged in the slit. Thus, sufficient flexibility can be ensured even when the inside of the slit is filled with the padding.

The present invention is also characterized in that the inside of the slit is substantially filled with a cushion member. Thus, the gap in the slit is almost eliminated only by filling the cushion member in the slit, and subsequent construction is easy.

The present invention is also characterized in that the cushion member is arranged at a substantially central position in the width direction of the slit, and a gap in the slit is filled with mortar. Thus, the cushion member can be easily installed in the slit, and after the mortar is filled, the cushion member can be stabilized in the slit.

According to the present invention, the cushion member is disposed on one side in the width direction of the slit, and a gap in the slit is provided with:
It is characterized in that mortar is filled. Thus, the cushion member can be easily fixed in the slit before filling the mortar.

According to the present invention, the cushion member is fixed in advance to one of a pair of molds respectively arranged at both ends in the wall thickness direction of the slit, and is arranged in the slit by installing the mold. It is characterized by being made. Thus, the cushion member can be arranged at a predetermined position in the slit only by installing the formwork, and the construction is easy.

According to the present invention, the cushion member comprises an outdoor cushion material and an indoor cushion material, and these cushion materials are formed on a pair of molds respectively arranged at both ends in the wall thickness direction of the slit. It is characterized in that it is fixed in advance, and is arranged continuously in the wall thickness direction in the slit by installing these two formwork. Thus, even when the wall thickness is large, the cushion member can be easily installed in the slit, and the installation state of the cushion member in the slit can be stabilized.

The present invention is also characterized in that the walls on both sides thereof are connected to each other by a fall prevention member via a slit. Thus, it is possible to prevent the wall body from falling to the outside of the room due to an earthquake or the like and falling.

The present invention is also characterized in that the fall prevention member is arranged obliquely across the slit in the wall thickness direction. Thus, even if an external force is applied in the direction of expanding or contracting the width of the slit, the fall prevention member does not act as a bar against the external force, and a sufficient flexible joint structure is secured.

The present invention is also characterized in that at least one of the outdoor surface side and the indoor surface side of the wall near the pillar is provided with a vertical slit-shaped partial slit in the wall thickness direction. I do. Thus, a fragile portion having a small wall thickness is formed at the portion of the partial slit, and when an external force is applied, the fragile portion is broken, and it becomes possible to prevent the column from buckling or the like.

The present invention is also characterized in that the partial slit is provided on the outdoor surface side of the wall, and the open end thereof is waterproof-sealed. This makes it possible to carry out the seismic retrofitting work without changing the state of the indoor surface side at all, and without putting a worker for the work inside the room side, and the waterproofness is sufficient. Also, construction is easy.

The present invention is also characterized in that the cushion member is arranged in the partial slit. This facilitates the work of applying a waterproof seal or the like to the opening end of the partial slit.

The present invention is also characterized in that at least a part of the cushion member is made of a refractory material. Thus, it is possible to improve the fire resistance of the portion provided with the slit or the partial slit, in particular, the portion provided with the slit.

[0030] The present invention also the depth of the partial slit, characterized in that as the following _^1/2 or less and 70mm wall thickness. Thus, even when the partial slit is provided, the original function of the wall body is not impaired, and sufficient flexibility can be ensured.

The present invention also provides a seismic retrofitting device comprising a slit provided vertically in the wall near the column and penetrating in the wall thickness direction and a waterproof sealing material for waterproofly sealing the outdoor side of the slit. It is characterized by doing. The slit makes it possible to form a flexible joint between the column side and the wall side, and the waterproof sealing material can prevent water from entering from the slit portion.

The present invention is also characterized in that a cushion member is arranged in the slit. Thus, sufficient flexibility can be ensured even when the inside of the slit is filled with the padding.

The present invention is also characterized in that the inside of the slit is substantially filled with a cushion member. Thus, by merely arranging the cushion member in the slit, the gap in the slit is almost eliminated, and subsequent work such as installation of the waterproof seal material is easy.

The present invention is also characterized in that the cushion member is disposed at a substantially central position in the width direction of the slit, and the porosity in the slit is filled with mortar. Thus, even when the wall thickness is large, the cushion member can be easily installed in the slit, and after filling the mortar, there is no void, so that the cushion member can be stabilized in the slit. It becomes possible.

The present invention is also characterized in that the cushion member is disposed on one side in the width direction of the slit, and the porosity in the slit is filled with mortar.
Thus, since the cushion member can be supported by one side of the slit, the support of the cushion member is stabilized, and there is no problem that the cushion member is displaced by filling with mortar.

According to the present invention, the cushion member is fixed in advance to one of a pair of molds respectively arranged at both ends in the wall thickness direction of the slit, and is arranged in the slit by installing the mold. It is characterized by being made. And by this, it is possible to arrange the cushion member at a predetermined position in the slit simply by installing the formwork, and it is easy to perform the construction, and even when the cushion member cannot be fixed directly in the slit. Thus, the installation state of the cushion member in the slit can be stabilized.

According to the present invention, the cushion member is also provided with an outdoor cushion member fixed in advance to an outdoor formwork installed on the outdoor side of the slit and an indoor formwork installed on the indoor side of the slit in advance. It is characterized by comprising a fixed indoor side cushion material, and by installing both the formwork, both cushion materials are arranged continuously in the wall thickness direction in the slit. Thus, even when the wall thickness is large, the cushion member can be easily installed in the slit, and the installation state can be stabilized in the slit of the cushion member.

[0038] The present invention is also characterized in that a fall prevention member for interconnecting the walls on both sides thereof through a slit is provided. Thus, even if the horizontal streak connecting the column side and the wall side is cut by providing the slit, it is possible to prevent the wall body from falling down to the outdoor side due to an earthquake or the like and falling. .

The present invention is also characterized in that the fall prevention member is arranged obliquely across the slit in the wall thickness direction. Thus, even if an external force is applied in the direction of expanding or contracting the width of the slit, the fall prevention member does not act as a bar against this external force, weakening the strength of the fall prevention member, or reducing the strength of the fall prevention member. It is possible to secure a sufficient flexible joint structure without providing an external force absorbing portion at the intermediate portion.

According to the present invention, a partial slit is provided in the vertical direction on at least one of the outdoor surface side and the indoor surface side of the wall near the pillar, and the partial slit is formed in a groove shape in the wall thickness direction. It is characterized by doing so. Thus, a weak portion having lower strength than other portions is formed in a portion where the partial slit of the wall is formed, and when an external force is applied, the weak portion is broken to prevent buckling of the column and the like. It becomes possible.

The present invention is also characterized in that the partial slit is provided on the outdoor surface side of the wall, and the open end thereof is sealed with a waterproof sealing material. This allows workers to work without entering the room, making it easy to perform seismic retrofitting work on existing buildings.
In addition, there is no possibility that the waterproofness is reduced.

The present invention is also characterized in that a cushion member is arranged in the partial slit. This facilitates the work of installing a waterproof sealing material or the like at the opening end of the partial slit.

The present invention is also characterized in that at least a part of the cushion member is provided with a refractory material.
Thus, it is possible to improve the fire resistance of the portion provided with the slit or the partial slit, in particular, the portion provided with the slit.

According to the present invention, the depth of the partial slit is
Characterized in that so as to be less than _^1/2 or less and 70mm wall thickness. Thus, even if the partial slit is provided, the original function of the wall body is not impaired,
In addition, in the unlikely event that the columns are buckled, it is possible to prevent the columns from buckling.

[0045]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIGS. 1 to 4 show a seismic retrofitting method and an apparatus thereof according to a first embodiment of the present invention.
As shown in each of the columns 1, 2 of the wall 3 between the adjacent columns 1 and 2,
The slits 11, which penetrate in the wall thickness direction,
12 are provided, and these slits 11 and 12 are provided.
Inside, a cushion member 13 is provided, and a mortar 14 is filled in the gaps in the slits 11 and 12.

In each of the slits 11 and 12, as shown in FIG.
A connecting reinforcing bar 17 for preventing falling is provided, which connects the outside horizontal bar 16 of the wall 3 on the side of the opposite pillars 1, 2 obliquely across the slits 11, 12 between the slits 11, 12. Both end portions of the wall body 3 are connected to the pillars 1 and 2 on both sides by a connecting reinforcing bar 17 extending in a figure-eight shape toward the indoor side. Thus, even when an external force such as an earthquake is applied, the wall 3 between the slits 11 and 12 can be completely prevented from falling to the outside of the room and falling, and the column 1 and the side 2 and the wall can be prevented. A perfect flexible joint structure is ensured between the three sides. This will be described later in detail.

As shown for the slit 12 in FIGS. 1 to 3, the cushion member 13 includes an indoor cushion member 19 previously mounted on an indoor formwork 18 installed on the indoor surface side of the slit 12 and a slit. And an outdoor cushion member 21 previously attached to an outdoor mold frame 20 installed on the outdoor surface side of the outside 12. Both cushion members 19, 21 position the both mold frames 18, 20 at the slit 12 position. , The slits 12 are arranged continuously at the center in the width direction of the slit 12 in the wall thickness direction. The same applies to the slit 11.

As shown in FIGS. 2 and 3, the indoor cushioning material 19 includes a refractory material 22 having a square cross section,
For example, a holding frame 23 formed by molding a synthetic resin and holding the indoor end of the refractory material 22, a strip-shaped backup material 24 fixed to the indoor end surface of the holding frame 23,
A rod-shaped jointing bar 25 having a trapezoidal cross section disposed on the indoor side of the backup material 24 is provided. The indoor cushioning material 19 is previously positioned at a predetermined position on the inner surface of the indoor-side formwork 18 by a headless nail 26. It can be attached.

As shown in FIGS. 2 and 3, the refractory material 22 comprises a square rod-shaped core material 22a which is made of inorganic fibers such as ceramic fibers, rock wool, glass wool or asbestos and has elasticity. , This core material 2
The backing material 24 is made of a closed-cell foam of a synthetic resin such as polyethylene, for example. A hook-shaped water return 23a whose tip is bent toward the indoor side is provided on both sides of the holding frame 23, respectively. And by this water return 23a, the integrated strength of the holding frame 23 and the mortar 14 can be further improved, and the joint rod 25 is removed together with the indoor side formwork 18. Has become.

On the other hand, as shown in FIG. 2 and FIG. 3, the outdoor cushion material 21 is made of a cushion material 27 formed in a square rod shape having a square cross section using a closed cell foam of a synthetic resin such as polyethylene. For example, a holding frame 28 formed by molding a synthetic resin and holding the outdoor end of the cushion material 27, a strip-shaped backup material 29 fixed to the outdoor end surface of the holding frame 28, and a backup Lumber 2
9 is provided with a bar-shaped joint bar 30 having a trapezoidal cross section and a sealing material 31 adhered and fixed to both sides of the holding frame 28 and the backup material 29, respectively. The cushion material 21 is attached to a predetermined position on the inner surface of the outdoor formwork 20 by a headless nail 32 in advance.

The backup member 29 is formed of a closed-cell foam of a synthetic resin such as polyethylene, and the seal member 31 is formed of non-vulcanized butyl rubber having sufficient flexibility and adhesiveness. Is adhered and fixed to the holding frame 28 and the backup material 29 by its own adhesiveness, and the carboxyl group thereof is
4 reacts with the CaO component in the mortar 1
4 is completely sealed. Also,
On both sides of the holding frame 28, hook-shaped water return 28a whose tip is bent to the outside of the room are provided, respectively, so that the water return 28a can completely prevent rainwater from entering from outside. And the holding frame 2
8 and the mortar 14 can be further improved in integrated strength. The joint rod 30 is removed together with the outdoor formwork 20, similarly to the joint rod 25 of the indoor cushioning material 19. Then, the mortar 1 is removed by removing the joint bars 25, 30.
As shown in FIG. 1D and FIG. 3, a primary sealing material 33 such as a caulking material is filled in the concave portion formed on the surface of the primary sealing material 33.
The two-sided adhesive state is maintained by the backup materials 24 and 29 located at the bottom of the recess. That is, the primary seal material 33 is adhered and fixed only to both sides without being adhered to the bottom of the concave portion, so that sufficient sealing performance is ensured even in the event of an earthquake.

Note that, in FIGS.
Is a sealing material disposed at the outdoor end of the slit 12 before filling with the mortar 14. The sealing material 34 is formed of the same non-vulcanized butyl rubber as the sealing material 31. After being subjected to a primer treatment, it is attached and fixed at a position shown in the figure. The seal member 34 can completely seal the space between the wall 3 and the mortar 14.

Incidentally, since the sealing material 34 is exposed as it is after the outdoor mold 20 is removed, if the outer surface of the mortar 14 is not subjected to surface coating or the like, the sealing material 34 is not used. In order to prevent the deterioration of the slit 12, the sealing material 34 may be arranged at a position slightly inside the indoor side of the outdoor end of the slit 12.

Next, the seismic retrofitting method according to the present embodiment will be described with reference to FIGS. Since FIG. 1 shows the slit 12, the slit 12 will be described below. The same applies to the slit 11.

At the time of construction, as shown in FIG. 1 (a), first, grooves 35a and 35b are respectively provided at positions where the slits 12 are to be provided from both sides of the wall body 3 using electric cutters and the like. , 35b are formed so as to extend between the bottom surfaces. The reason why the slit 12 is formed by such a method is as follows.

That is, the wall 3 on which the slit 12 is to be provided is usually a waist wall 3a as shown in FIG. 15, and the waist wall 3a is regulated by a window frame whose upper end is mounted on the opening 4. The lower end is regulated by the floor surface 5. For this reason, the slits 12 can be formed only by working from both sides of the wall 3.

After the slits 12 are formed in this manner, the inner surface of the slits 12 is removed to remove the indoor horizontal stripes 15.
Then, the distal ends of the outdoor lateral streaks 16 are exposed, and these two lateral streaks 15 and 16 are interconnected by a connecting reinforcing bar 17 that crosses the inside of the slit 12 obliquely.

The connecting bars 17 of the slit 12 and the connecting bars 17 of the slit 11 have opposite inclination directions as shown in FIG.
Both end portions of the wall 3 between the columns are connected to the columns 1 and 2 via the connecting reinforcing bars 17 extending in a figure-eight shape toward the indoor side. For this reason, even when a large force is applied to the wall 3 due to an earthquake or the like, even if the wall 3 may fall down to the indoor side, the wall 3 falls down and falls down to the outside of the room, causing a catastrophic disaster. Can be completely prevented. Moreover, since the connecting reinforcing bar 17 obliquely crosses the inside of each of the slits 11 and 12, a flexible joint structure is secured between the wall 3 and each of the columns 1 and 2.

When the connecting reinforcing bars 17 are arranged in this manner, the inner surface of the outdoor end of the slit 12 is subjected to a primer treatment, and the sealing material 34 is attached and fixed by utilizing its own adhesiveness. I do. By this primer treatment, the sealing material 34 can be securely adhered and fixed to the inner surface of the slit 12.

Next, as shown in FIG. 1 (b), with the cushion members 19, 21 previously attached to the inner surfaces of the molds 18, 20, the molds 18, 20 are attached to the slit 12 on the indoor surface side. And on the outdoor side. Then, both the molds 18 and 20 are fixed to the wall 3 using a separator disposed in the slit 12 or a nail driven into the wall 3. Thereby, the cushion member 13 is set in the slit 12. The cushion members 19, 2
1 is previously attached to the inner surfaces of the molds 18 and 20 by the following method.

That is, headless nails 26 and 32 are set in advance in each of the cushion members 19 and 21 so that the tips do not protrude from the joint bars 25 and 30. On the other hand, when the installation positions of the molds 18 and 20 are determined, the mounting positions of the cushion members 19 and 21 are automatically determined. Therefore, when the mounting positions of the cushion members 19 and 21 are determined, marks for mounting the cushion members 19 and 21 are attached to the inner surfaces of the molds 18 and 20.

Next, the refractory material 22 and the cushion material 2
7 is removed from each of the holding frames 23 and 28, and the cushion members 19 and 21 other than the refractory material 22 and the cushion material 27 are removed.
It is placed on each of the molds 18 and 20 according to the mark. Then, the base ends of the headless nails 26 and 32 are beaten and the headless nails 26 and 32 are driven into the formwork 18 and 20. Then, after that, the refractory material 22 and the cushion material 27
Is re-attached to each of the holding frames 23 and 28, and
9 and 21 are completed. Thereby, each cushion material 1
9 and 21 are attached to the molds 18 and 20, respectively.

By the way, each of the molds 18 and 20 is
2 are installed on the indoor surface side and the outdoor surface side, respectively, and when the cushion member 13 is installed in the slit 12, FIG.
As shown in FIG. 7, the connecting reinforcing bar 17 is arranged in the slit 12, so that the refractory material 22 and the cushioning material 27 are provided.
Will come into contact with the connecting reinforcing bar 17. Therefore,
The cushion member 27 is provided with a notch in advance in a portion corresponding to the connecting reinforcing bar 17. On the other hand, since the refractory material 22 has sufficient deformability and the portion in contact with the connecting reinforcing bar 17 is compressed and deformed, it is not necessary to provide a notch or the like.

When the cushion member 13 is set in the slit 12 in this way, as shown in FIG. 1C, the mortar 14 is filled on both sides of the cushion member 13 in the slit 12. And after curing of mortar 14,
The molds 18 and 20 are removed. Then, as shown in FIG. 3, the joint bars 25, 30 and the headless nails 26, 32 are removed integrally with the formwork 18, 20, and the outer surface of the mortar 14 corresponds to the joint bars 25, 30. Is formed. Therefore, as shown in FIG. 1D, a primary sealing material 33 such as a caulking material is filled in the recess.

Thus, each of the molds 18 and 21 is
Just install on the indoor side and outdoor side of 1,12,
Since the cushion member 13 can be stably and accurately installed in the slits 11 and 12, even when the wall thickness of the wall body 3 is large and the width of the slits 11 and 12 is as narrow as about 150 mm, the cushion member 13 can be used. The member 13 can be easily installed without any trouble. In addition, after the cushion member 13 is installed, the gaps in the slits 11 and 12 are filled with the mortar 14, so that the installation state of the cushion member 13 can be stabilized. Further, since the indoor cushion material 19 has the refractory material 22, the fire resistance of the slits 11 and 12 can be greatly improved.

Incidentally, in the first embodiment,
The case where the grooves 35a and 35b are provided and the respective slits 11 and 12 are formed by peeling the bottom thereof has been described. Each slit 11, 1
2 can also be formed.

In the first embodiment, the case where the connecting reinforcing bar 17 is connected to the horizontal bars 15 and 16 in the wall 3 has been described.
16 may not be connected.

FIG. 5 shows a second embodiment of the present invention applied to such a case.
This is connected to a vertical streak 42 fixed in the slits 11 and 12 via an anchor bolt 41.

That is, as shown for the slit 12 in FIG. 5, anchor bolts 41 are respectively cast and fixed to the upper and lower ends of both sides of the slit 12, and the anchor bolt 41 on each side is provided with a vertical stripe. The upper and lower ends 42 are welded to each other. And the connecting rebar 17
Are connected to the two vertical streaks 42. The sealing material 34 is disposed, for example, at the center of the wall 3 in the wall thickness direction. In other respects, the configuration is the same as that of the first embodiment, and the operation is the same.

Since the connecting rebar 17 is connected to the longitudinal rebar 42, the connecting rebar 17 can be installed even when the connecting rebar 17 cannot be connected to the horizontal rebars 15, 16, and the connecting rebar 17 can be connected. Since the installation position in the vertical direction can be freely selected, the connecting rebar 1
7 can be installed.

FIG. 6 shows a third embodiment of the present invention, in which the cushion member 13 is set so as to be close to one side surface of the slits 11 and 12, and the sealing member 34 is attached to the wall 3, for example. It is provided near the center in the wall thickness direction and near the center of the cushion member 13 on the mortar 14 side, and the connecting reinforcing bar 17 is omitted. In other respects, the configuration is the same as that of the first embodiment, and the operation is the same.

However, since the cushion member 13 is provided so as to be close to one side surface of the slits 11 and 12, it is only necessary to fill the mortar 14 into only one side of the cushion member 13 and the work is easy. , Cushion member 1
3 can be directly fixed to the inner surfaces of the slits 11 and 12, so that the cushion members 19 and 21
It does not need to be fixed to 0 in advance. Further, both the cushion members 19 and 21 may be fixed to only one of the mold frames 18 and 20 in advance.

FIG. 7 shows a fourth embodiment of the present invention, in which an indoor cushioning material 19 and an outdoor cushioning material 21 are placed close to different side surfaces of the slits 11 and 12, and a seal is provided. The material 34 is the cushion material 19, 2
1 are arranged on both sides. In other respects, the configuration is the same as that of the third embodiment, and the operation is the same.

Thus, also in the present embodiment, the same effects as in the third embodiment can be expected. Further, when the connecting reinforcing bar 17 is installed, both the cushion members 19 and 2 are used.
1 and the cushioning members 19 and 21 are not provided with notches or the like, and the connecting reinforcing bars 17 are not provided.
Can be installed.

FIG. 8 shows a fifth embodiment of the present invention. The refractory material 22 and the cushion material 27 are directly press-fitted into the slits 11 and 12 so that the molds 18 and 20 can be omitted. Things.

That is, as shown in FIG. 8, a refractory material 22 and a cushion material 27 are directly press-fitted into the slits 11 and 12 so as to substantially fill the slits 11 and 12, and the inside of the slits 11 and 12 is indoors. Is sealed by a secondary sealing material 52 via a backup material 51, and ends on the outdoor side of the slits 11 and 12 are sealed by a primary sealing material 54 via a backup material 53. ing.

In the present embodiment, however, the refractory material 22 and the cushion material 27 are directly connected to the slits 11 and 1.
Since it is press-fitted into the mortar 2, the structure can be simplified and the cost can be reduced, and the mortar 14 does not need to be filled, so that the construction is easy.

FIG. 9 shows a sixth embodiment of the present invention. In the construction method in which the refractory material 22 and the cushion material 27 are directly pressed into the slits 11 and 12, most of the work is performed from the indoor side. Is made possible.

That is, as shown in FIG.
2. The cushion material 27 and the seal material 61 functioning as a secondary seal material are integrated in advance by a method such as bonding, and these are integrally pressed into the slits 11 and 12 from the indoor side. ing. Then, the sealing material 61 is attached to the indoor surface of the
1, 12 are sealed. Further, the outdoor ends of the slits 11 and 12 are sealed by the primary seal member 54 via the backup material 53 by construction from the outdoor side.

In this embodiment, however, most of the work can be performed from the indoor side, so that the work is easy and the work can be performed safely even in rainy weather or the like.

FIG. 10 shows a seventh embodiment of the present invention. In contrast to the sixth embodiment, most of the work can be performed from outside the room. .

That is, as shown in FIG. 10, the refractory material 22 and the cushion material 27 are press-fitted into the slits 11 and 12 from the outside of the room. The outer surface is sealed by a groove-shaped secondary sealing material 71 made of non-vulcanized butyl rubber. In this secondary sealing material 71, a backup material 72 is provided in a state where an outer end thereof projects slightly outward from the opening end of the groove, and a primary sealing material 73 is provided outside the backup material 72. Waterproof sealed. The back-up material 72 ensures the two-sided bonding of the primary seal material 73.

In this embodiment, however, most of the work can be performed from outside the room, so that the work can be performed even when the room is used. In addition,
In the present embodiment, the refractory material 22 is exposed to the indoor side, but when the interior material 74 is disposed on the indoor side as shown in FIG. There is no particular problem because the exposure of the refractory material 22 can be concealed by a method such as installing a joint material 75 at a portion where the interior material 74 has been cut. If a problem arises, the indoor ends of the slits 11 and 12 may be sealed with a sealing material or the like.

FIGS. 11 and 12 show an eighth embodiment of the present invention, in which only the refractory material 22 or only the cushion material 27 is press-fitted into the slits 11 and 12, and the slits 11 and 12 are connected to the columns 1 and 2. The wall 3 is connected to the slits 11 and 12 by a connecting reinforcing bar 84 substantially perpendicular to the slits 11 and 12.

That is, as shown in FIG. 11, only the refractory material 22 or only the cushion material 27 is press-fit into the slits 11 and 12 from the indoor side.
The inside of the room is sealed with a secondary sealing material 81 in the form of a groove made of non-vulcanized butyl rubber at least on both outer surfaces.

On the other hand, as shown in FIGS. 11 and 12, recesses 85 are provided at both sides of the slits 11 and 12 at intervals on the outdoor surface side of the slits 11 and 12, respectively. Anchor bolts 86 are respectively cast and fixed in the recesses 85. The anchor bolts 86 on both sides of the anchor bolts 86 are inserted through the slits 11 and 12 into external force absorbing portions 84a at the center.
Are connected to each other by a connecting reinforcing bar 84 having After the connection reinforcing bar 84 is installed, the mortar 87 is filled in each recess 85.

As shown in FIG. 11, a backup material 82 is press-fitted into the outside ends of the slits 11 and 12, and the primary seal material 8 is formed outside the backup material 82.
3 is used to seal. By providing the backup material 82, the two-sided adhesion of the primary seal material 83 is ensured, and even if the columns 1 and 2 and the wall 3 move differently, the seal of the primary seal material 83 does not break. It has become.

In this embodiment, however, the connecting reinforcing bar 84 is parallel to the wall 3, that is, the slits 11 and 12.
Are arranged in a direction orthogonal to the slits 11 and 1,
2 acts as a rebound bar against an external force in the direction of expanding and contracting the width of the second member 2.
Is provided, it is possible to secure a sufficient flexible joint structure without reducing the strength of the connecting reinforcing bar 84.

FIG. 13 shows a ninth embodiment of the present invention, in which the inside of the slits 11 and 12 is left as a space.

That is, as shown in FIG. 13, the indoor ends of the slits 11 and 12 are closed by the installation of a joint material 91 made of, for example, a synthetic resin. The end on the outdoor side is waterproof-sealed by a primary sealing material 93 after press-fitting, for example, a cylindrical backup material 92. As a result, most portions of the slits 11 and 12 are left as spaces.

In the present embodiment, however, since most of the slits 11 and 12 are left as spaces, the construction is easy and the cost can be reduced.

FIG. 14 shows a tenth embodiment of the present invention.
Instead of 12, partial slits 111 and 112 are provided.

That is, as shown in FIG. 14, on the outdoor surface side of the wall 3 near the pillars 1 and 2, there are provided partial slits 111 and 112 extending vertically in a groove shape in the wall thickness direction. And the depth W of the partial slits 111 and 112
₁ is set to be equal to or less than _^1/2 or less and 70mm wall thickness W _2. Thus, even if the partial slits 111 and 112 are provided, the original function of the wall 3 is not impaired, and in the unlikely event that the wall 3 functions, it functions as a sufficient flexible joint structure.

In the partial slits 111 and 112,
As shown in FIG. 14, the refractory material 22 or the cushion material 27 is press-fitted, and the outer surface side thereof is waterproof-sealed by the primary seal material 103 via the backup material 102.

In the present embodiment, however, partial slits 111 and 112 are provided instead of slits 11 and 12, so that the fragile portion having lower strength than other portions of wall 3 at this portion. Is formed, and when an external force is applied, the fragile portion is broken and buckling of the columns 1 and 2 can be prevented. In addition, in the case of the partial slits 111 and 112, since the work can be performed without the worker entering the room, the seismic retrofitting work of the existing building can be easily performed, and there is no possibility that the waterproof property is reduced.

In the tenth embodiment, the case where the refractory material 22 or the cushion material 27 is pressed into the partial slits 111 and 112 has been described. May be left as a space. Also, the partial slits 111, 1
The 12 may not be provided on the outdoor surface side of the wall body 3 but may be provided on the indoor surface side. And in this case, the partial slit 1
It is also possible to leave the inside of 11, 11 as a complete groove. Further, the partial slits 111 and 112 may be provided on both the indoor and outdoor surfaces of the wall 3.

The present invention is not limited to the above embodiments. For example, the configurations in the embodiments may be used in combination with each other.

[0098]

As described above, according to the present invention, a slit penetrating in the wall thickness direction is provided in the wall near the pillar in the vertical direction, and at least the outdoor side of the slit is waterproofly sealed. In addition, the pillar side and the wall side have a flexible joint structure, so that the earthquake resistance can be improved at a low cost and in a short construction period, and there is no possibility of increasing the weight of the whole building. Also,
Water from the slit can be prevented.

In the present invention, since the cushion member is arranged in the slit, even when the inside of the slit is filled with the padding, sufficient flexibility is ensured to effectively prevent buckling of the column. Can be prevented.

In the present invention, since the inside of the slit is substantially filled with the cushion member, the space inside the slit is almost eliminated only by packing the cushion member in the slit, and the subsequent work is easy.

According to the present invention, the cushion member is disposed substantially at the center in the width direction of the slit, and the mortar is filled in the gap in the slit, so that the cushion member can be installed in the slit. It is easy and after the mortar is filled, the cushion member can be stabilized in the slit.

In the present invention, the cushion member is disposed on one side in the width direction of the slit, and the gap in the slit is provided with:
Since the mortar is filled, the cushion member can be easily fixed in the slit before the mortar is filled, and the mortar can be filled only on one side of the cushion member.

According to the present invention, the cushion member is fixed in advance to one of a pair of molds respectively arranged at both ends in the wall thickness direction of the slit, and is arranged in the slit by installing the mold. Because it is made to be, it is possible to arrange the cushion member at a predetermined position in the slit simply by installing the formwork, and while the construction is easy,
One of the molds can be removed in a state where the cushion member is disposed in the slit, so that the work in the slit can be performed after the cushion member is disposed.

According to the present invention, the cushion member comprises an outdoor cushion material and an indoor cushion material, and these cushion materials are formed into a pair of molds respectively arranged at both ends in the wall thickness direction of the slit. It is fixed in advance, and by installing these two forms, it is arranged continuously in the wall thickness direction in the slit, so even if the wall thickness is thick, the cushion member can be easily installed in the slit. And the installation state of the cushion member in the slit can be stabilized.

In the present invention, the walls on both sides thereof are connected to each other by the fall prevention member through the slit.
Problems such as causing a catastrophic disaster can be prevented.

According to the present invention, the fall prevention member is disposed obliquely across the slit in the wall thickness direction, so that even if an external force is applied in the direction of expanding or contracting the width of the slit, the fall prevention member can be provided. A sufficient soft joint structure can be ensured without acting as a bar against this external force.

According to the present invention, a partial slit forming a groove in the wall thickness direction is provided in at least one of the outdoor surface side and the indoor surface side of the wall near the pillar in the vertical direction. Becomes a fragile portion of the wall, and when an external force is applied, the fragile portion is broken and buckling of the column or the like can be prevented.

According to the present invention, since the partial slit is provided on the outdoor surface side of the wall and the opening end thereof is waterproof-sealed, the state on the indoor surface side is not changed at all.
In addition, the seismic retrofitting work can be easily performed without a worker for the work being placed on the indoor side, and the waterproofness is sufficient. Also, construction is easy.

According to the present invention, since the cushioning material is arranged in the partial slit, the operation for applying a waterproof seal or the like to the opening end of the partial slit is easy.

In the present invention, since at least a part of the cushion member is made of a refractory material, the fire resistance of the portion provided with the slit or the partial slit, particularly the portion provided with the slit is improved. Can be done.

[0111] The present invention also provides a depth of part slit, since as the following _^1/2 or less and 70mm wall thickness, be provided with a partial slit, the wall original function is impaired However, in the event that there is no such problem, it can function as a sufficient flexible joint structure.

The present invention also provides an anti-seismic reinforcement device comprising a slit vertically penetrating the wall near the pillar in the thickness direction and a waterproof sealing material for waterproofly sealing the outdoor side of the slit. So that the slits make it possible to form a flexible joint between the column side and the wall side,
Further, the waterproof sealing material can prevent water from entering from the slit portion.

In the present invention, since the cushion member is arranged in the slit, even if the inside of the slit is filled with the padding, the function of the flexible joint structure does not deteriorate.

In the present invention, since the inside of the slit is substantially filled with the cushion member, only the cushion member is arranged in the slit, the gap in the slit is almost eliminated, and subsequent steps such as installation of a waterproof sealing material are performed. Work is easy.

Further, according to the present invention, the cushion member is disposed substantially at the center in the width direction of the slit, and the porosity in the slit is filled with mortar, so that even when the wall thickness is large. In addition, the cushion member can be easily installed in the slit, and the cushion member can be installed without any problem even if both side surfaces of the slit are not flat surfaces. Moreover, since the mortar is filled on both sides of the cushion member, there is no void even if both side surfaces of the slit are not flat surfaces, and the cushion member can be stabilized in the slit.

In the present invention, the cushion member is arranged on one side in the width direction of the slit, and the gap in the slit is filled with mortar. The cushion member can be supported and the support of the cushion member is stabilized, and there is no problem that the cushion member is displaced by filling with mortar.

According to the present invention, the cushion member is fixed in advance to one of a pair of molds respectively arranged at both ends in the wall thickness direction of the slit, and is arranged in the slit by installing the mold. Since the cushion member can be arranged at a predetermined position in the slit simply by installing the formwork, the construction is easy, and the cushion member cannot be fixed directly in the slit. Even if there is, the installation state of the cushion member in the slit can be stabilized. Further, since the cushion member is fixed to only one of the molds, the other mold can be removed even when the cushion member is installed in the slit, and the work in the slit is easy.

In the present invention, the cushion member is also fixed to an outdoor cushion member fixed to an outdoor mold provided on the outdoor side of the slit and an indoor mold provided on the indoor side of the slit in advance. It is composed of a fixed indoor side cushion material, and by installing the two formwork, both cushion materials are arranged continuously in the wall thickness direction in the slit. Also, the cushion member can be easily installed in the slit, and the end of each cushion material is supported by the mold, so that the installation state of the cushion member in the slit can be stabilized.

According to the present invention, since the fall prevention member for connecting the walls on both sides thereof to each other via the slit is provided, the horizontal streak connecting the column side and the wall side is cut by providing the slit. Even if it is done, it is possible to prevent an accident in which the wall body falls outside due to an earthquake or the like and falls.

According to the present invention, the fall prevention member is disposed obliquely across the slit in the direction of the wall thickness, so that the fall prevention member is not affected even when an external force is applied in the direction of increasing or decreasing the width of the slit. A sufficient flexible joint structure can be ensured without acting as a bar against this external force and without weakening the strength of the fall prevention member or providing an external force absorbing portion at an intermediate portion of the fall prevention member. .

According to the present invention, a partial slit is provided in the vertical direction on at least one of the outdoor surface side and the indoor surface side of the wall near the pillar, and the partial slit is formed in a groove shape in the wall thickness direction. As a result, a weak portion having a lower strength than the other portion of the wall is formed in the partial slit portion, and when an external force is applied, the weak portion is broken to prevent buckling of the column and the like. be able to.

According to the present invention, since the partial slit is provided on the outdoor surface side of the wall and the opening end thereof is sealed with a waterproof sealing material, the work can be performed without the worker entering the room. In addition, seismic retrofitting of existing buildings can be easily performed. Further, there is no possibility that the waterproofness is reduced.

According to the present invention, since the cushion member is arranged in the partial slit, the work for installing a waterproof sealing material or the like at the opening end of the partial slit is easy.

In the present invention, since the refractory material is provided on at least a part of the cushion member, the fire resistance of the portion provided with the slit or the partial slit, particularly the portion provided with the slit is improved. be able to.

In the present invention, the depth of the partial slit is
Since so as to below _^1/2 or less and 70mm wall thickness, be provided with a partial slit, without wall original function is impaired, yet in the case of emergency, the the flexible joint structure The function can be sufficiently exerted to prevent the column from buckling.

[Brief description of the drawings]

FIGS. 1A to 1D are explanatory views sequentially showing a seismic retrofitting method according to a first embodiment of the present invention in accordance with procedures.

FIG. 2 is an enlarged view showing details of the earthquake-resistant reinforcement device of FIG.

FIG. 3 is a view corresponding to FIG. 2, showing a state in which a formwork and joint bars are removed.

FIG. 4 is an explanatory view showing a reinforcing bar arrangement state of a pair of slits provided in a wall between adjacent columns.

FIG. 5 is a diagram corresponding to FIG. 2, showing a second embodiment of the present invention.

FIG. 6 is a diagram corresponding to FIG. 2, showing a third embodiment of the present invention.

FIG. 7 is a diagram corresponding to FIG. 2, showing a fourth embodiment of the present invention.

FIG. 8 is a diagram corresponding to FIG. 2, showing a fifth embodiment of the present invention.

FIG. 9 is a diagram corresponding to FIG. 2, showing a sixth embodiment of the present invention.

FIG. 10 is a diagram corresponding to FIG. 2, showing a seventh embodiment of the present invention.

FIG. 11 is a diagram corresponding to FIG. 2, showing an eighth embodiment of the present invention.

FIG. 12 is a configuration diagram of FIG. 11 as viewed from the outdoor side.

FIG. 13 is a diagram corresponding to FIG. 2, showing a ninth embodiment of the present invention.

FIG. 14 is a diagram corresponding to FIG. 2, showing a tenth embodiment of the present invention.

FIG. 15 is an explanatory diagram showing an example of a method for forming a flexible joint between a waist wall and a column.

[Explanation of symbols]

1, 2 pillar 3 wall body 11, 12 slit 13 cushion member 14, 87 mortar 15 indoor horizontal streak 16 outdoor horizontal streak 17, 84 connecting reinforcing bar 18 indoor side formwork 19 indoor side cushion material 20 outdoor side formwork 21 outdoor side cushion Material 22 Refractory material 22a Core material 22b Jacket material 23, 28 Holding frame 23a, 28a Water return 24, 29, 51, 53, 72, 82, 92, 102
Backup material 25,30 Joint bar 26,32 Headless nail 27 Cushion material 31,34,61 Seal material 33,54,73,83,93,103 Primary seal material 41,86 Anchor bolt 42 Vertical streak 52,71,81 Secondary sealing material 84a External force absorbing part 85 Depression 111, 112 Partial slit W ₁ depth W ₂ Wall thickness

Continuation of front page (56) References JP-A-9-242344 (JP, A) JP-A-9-184206 (JP, A) JP-A-9-203218 (JP, A) JP-A 9-203219 (JP) JP-A-8-93266 (JP, A) JP-A-6-341247 (JP, A) JP-A-63-27680 (JP, A) JP-A-62-258066 (JP, A) 58-168763 (JP, A) JP-A-9-242344 (JP, A) JP-A-9-184206 (JP, A) JP-A-59-15282 (JP, Y2) (58) Fields studied (Int. Cl. ⁶ , DB name) E04G 23/02

Claims (24)

(57) [Claims] The wall of the pillars vicinity of 1. A existing buildings, Rutotomo a slit penetrating in the wall thickness direction in the vertical direction
Then, a cushion member is arranged in this slit,
The cushioning member is located approximately at the center of the slit in the width direction.
And the mortar is filled in the gap inside the slit.
A seismic reinforcement method characterized by being filled . 2. A wall near a pillar in an existing building,
With slits penetrating in the thickness direction provided in the vertical direction
A cushion member is disposed in the slit, and the cushion member is disposed on one side in the width direction of the slit, and a gap in the slit is filled with mortar. seismic strengthening method characterized. 3. The cushion member is fixed in advance to one of a pair of molds respectively arranged at both ends in the wall thickness direction of the slit, and is arranged in the slit by installing the mold. The seismic retrofitting method according to claim 1 or 2 . 4. The cushion member includes an outdoor cushion material and an indoor cushion material, and these cushion materials are fixed in advance to a pair of molds respectively arranged at both ends in the wall thickness direction of the slit. The seismic retrofitting method according to claim 1 or 2 , wherein the two formwork are provided so as to be continuously arranged in the slit in the wall thickness direction. 5. At least the outdoor side of the slit is waterproof.
Claims 1, 2, 3, and 3 characterized by being sealed
Is the seismic strengthening method described in 4. 6. A wall on both sides thereof through the slit, claim 1, 2, 3, characterized in that coupled to each other by a fall preventing member, Seismic Retrofit for 4 or 5, wherein. 7. The seismic retrofitting method according to claim 6 , wherein the fall prevention member crosses the inside of the slit obliquely in a wall thickness direction. 8. A seismic retrofitting method characterized in that at least one of the outdoor surface side and the indoor surface side of the wall body near the column is provided with a vertical slit-shaped partial slit in the wall thickness direction. 9. The seismic retrofitting method according to claim 8 , wherein the partial slit is provided on the vehicle outer surface side of the wall body, and an open end thereof is waterproofly sealed. 10. Seismic Retrofit of claim 8, wherein the cushion member is disposed within the portion slits. 11. The cushion member according to claim 11, wherein at least a part of the cushion member is made of a refractory material.
Seismic reinforcement method described in 1, 2 , 3 , 4 , 5 , 6 , 7 or 10 . 12. The depth of the partial slit is １ ／ of the wall thickness.
And not more than 70 mm
The earthquake-resistant reinforcement method described in 8 , 9, or 10 . 13. A slit provided in the vertical direction through the wall thickness direction in the wall of the pillars near the existing building, this
And a cushion member arranged in the slit of
The cushion member is located at the approximate center of the slit in the width direction.
The mortar fills the gaps inside the slits
A seismic reinforcement device characterized by being loaded . 14. A wall on a wall near a pillar in an existing building.
A slit that penetrates in the thickness direction and is
And a cushion member arranged in the slit of
Serial cushion member is disposed on one widthwise side of the slit, and the gap portion in the slit, seismic reinforcement device you characterized in that mortar is filled. 15. The cushion member is fixed in advance to one of a pair of molds respectively arranged at both ends in the wall thickness direction of the slit, and is arranged in the slit by installing the mold. The earthquake-resistant reinforcement device according to claim 13 or 14, wherein: 16. A cushion member, which is previously fixed to an outdoor formwork provided on the outdoor side of the slit, and which is previously fixed to an indoor formwork provided on the indoor side of the slit. Indoor cushioning material,
The seismic retrofitting device according to claim 13 or 14 , wherein the two cushion members are arranged continuously in the wall thickness direction in the slit by installing the two formwork. 17. At least the outdoor surface side of the slit is protected
It is characterized by being waterproofly sealed with water sheet material
17. The seismic retrofitting device according to claim 13, 14, 15, or 16.
Place. 18. The method of claim 13, characterized in that it comprises a falling prevention member for connecting the walls of the both sides through the slit to each other, 15 and 16 or the seismic reinforcement device according 17. 19. The anti-seismic reinforcement device according to claim 18 , wherein the fall prevention member crosses the inside of the slit obliquely in the wall thickness direction. 20. A partial slit provided in a vertical direction on at least one of the outdoor surface side and the indoor surface side of the wall body near the pillar, and the partial slit has a groove shape in the wall thickness direction. An earthquake-resistant reinforcement device characterized by the following. 21. The anti-seismic reinforcement device according to claim 20 , wherein the partial slit is provided on the outdoor surface side of the wall, and an open end thereof is sealed with a waterproof seal material. 22. the partial slit, seismic reinforcement device according to claim 20 also <br/> 21 wherein a has a cushion member therein. 23. The cushion member according to claim 13, wherein at least a part of the cushion member has a refractory material .
15, 16,17,18,1 9 or seismic reinforcement device according 22. 24. The depth of the partial slit is １ ／ of the wall thickness
And not more than 70 mm
20. The earthquake-resistant reinforcement device according to 20 , 21, or 22 .