JP6764589B2 - How to build a seismic reinforcement structure, a seismic reinforcement unit, and a seismic reinforcement structure - Google Patents

Description

The present invention relates to a seismic reinforcement structure, a seismic reinforcement unit, and a method for constructing a seismic reinforcement structure.

Conventionally, various techniques have been proposed in which a reinforcing member is fixed to the outside of an existing building to construct a seismic reinforcing structure of the existing building. In Patent Document 1 below, the seismic performance is improved by fixing the reinforcing plate material to both the existing columns and the existing beams arranged along the outer surface of the existing building. The reinforcing plate material is composed of a plurality of steel plates and the like, and ribs are joined to the ends of the steel plates by welding or the like.
In Patent Document 1, by arranging the openings formed by the plurality of reinforcing plate materials at positions corresponding to the openings such as windows of the existing building, the feeling of opening of the openings such as windows in the existing building is not hindered. It was.

Japanese Unexamined Patent Publication No. 2014-231700

By the way, the reinforcing member provided on the outside of the existing building is visible from the outside. In the reinforcing structure described in Patent Document 1 described above, the steel plate or the like constituting the reinforcing plate material is exposed. In order to ensure the appearance quality, it is necessary to install a new exterior material that covers the steel plate or the like from the outside, which increases the construction labor and cost. Further, since a large number of ribs are welded to the end of the steel plate, there is a problem that the reinforcing plate material itself requires a lot of construction work and costs.

Therefore, the present invention has been made in view of the above circumstances, and provides a seismic reinforcement structure, a seismic reinforcement unit, and a method for constructing a seismic reinforcement structure, which can easily improve seismic strength while ensuring appearance quality. ..

In order to achieve the above object, the present invention employs the following means.
That is, the seismic reinforcement structure according to the present invention comprises a plurality of plate-like bodies that protrude outward from the existing building, extend in the vertical direction, and are arranged with a gap in the width direction of the existing building, and the plate-like bodies. a joint portion for joining the beams of the existing buildings, and reinforcing panel for connecting the said plate-like body portion of the adjacent, wherein the plate-like member and the reinforcing panel is composed of reinforced concrete, said reinforcing panel Is arranged along the edge of the plate-shaped body on the side of the existing building .

According to the seismic reinforcement structure configured in this way, the plurality of plate-like bodies project outward from the existing building, extend in the vertical direction, and are arranged with a gap in the width direction of the existing building. The body acts as an environmental louver that blocks direct sunlight. Since the plate-shaped body is joined to the beam of the existing building by the joint, the plate-shaped body that functions as an environmental louver can be used as a member for ensuring the strength of the existing building, and the seismic strength of the existing building can be improved. Is possible.
Further, since the reinforcing panels arranged between some adjacent plate-shaped bodies are connected to the beam via the plate-shaped bodies, seismic strength can be ensured according to the arrangement amount of the reinforcing panels.
Further, since the adjacent plate-shaped bodies are connected by the reinforcing panels, the plurality of plate-shaped bodies protruding outward from the existing building and the reinforcing panels arranged along the existing building are integrated. Therefore, a large moment of inertia of area can be secured for the seismic reinforcement structure, and seismic strength can be greatly improved.
Therefore, the seismic strength can be easily improved by the seismic reinforcement structure.

On the other hand, since the plate-shaped body and the reinforcing panel are made of reinforced concrete, the appearance quality can be ensured in a state where the plate-shaped body and the reinforcing panel are exposed to the outside of the existing building and installed. In addition, since a gap through which light and wind can pass is formed between adjacent plate-shaped bodies, the appearance of the existing building can be visually recognized from the outside, and a feeling of openness of openings such as windows can be secured. It is possible to prevent deterioration of the appearance quality of existing buildings.
As a result, according to the seismic reinforcement structure of the present invention, it is possible to provide a seismic reinforcement structure that can easily improve the seismic strength while ensuring the appearance quality.

Further, in the seismic reinforcement structure according to the present invention, it is preferable that the reinforcing panel is joined to the beam via the joint portion.

According to the seismic reinforcement structure configured in this way, the beam and the plate-like body and the beam and the reinforcement panel are joined by the joint, so that the beam and the reinforcement panel and the plate-like body of the existing building can be joined. The joint strength between the two can be improved, and the reinforcing effect of the reinforcing panel can be increased.

Further, in the seismic reinforcement structure according to the present invention, the reinforcement panels may be continuously formed between the beams arranged apart from each other in the vertical direction.

According to the seismic reinforcement structure configured in this way, the reinforcing panels are continuously formed between the beams arranged vertically separated from each other, so that the reinforcing effect of the reinforcing panels between the beams is increased and the seismic resistance is efficiently performed. The strength can be improved.

Further, in the seismic reinforcement structure according to the present invention, between the adjacent plate-shaped bodies, a closed portion in which the reinforcing panel is continuously arranged in the vertical direction and an open portion in which the reinforcing panel is not arranged are provided. , May be provided.

According to the seismic reinforcement structure configured in this way, a closed portion in which the reinforcing panels are continuously arranged in the vertical direction and an open portion in which the reinforcing panels are not arranged are provided between the adjacent plate-shaped bodies. Therefore, the appearance of the design can be configured by adjusting the positions of the closed portion and the open portion. Therefore, the structure of the seismic reinforcement structure can be used as it is as a design appearance, and excellent appearance quality can be ensured without using an exterior member.

Further, in the seismic reinforcement structure according to the present invention, an opening may be provided between the pillars of the existing building, and the distance between the adjacent plate-shaped bodies may be narrower than the width of the opening.

According to the seismic reinforcement structure configured in this way, the distance between the plate-shaped bodies is narrower than the width of the opening such as the window between the pillars of the existing building, and the reinforcing panels are arranged between the plate-shaped bodies. Therefore, the vicinity of the opening can be reinforced. Therefore, it is possible to easily improve the seismic strength even in an existing building with a large opening.

Further, in the seismic reinforcement unit according to the present invention, a plate-shaped reinforcing panel, a partial plate-shaped body erected and fixed on both sides of the reinforcing panel, and the partial plate-shaped body are joined to a beam of an existing building. The partial plate-like body is provided with a joint portion to be formed and a connecting portion for connecting the partial plate-like body to the partial plate-like body fixed to the other reinforcing panel, and the partial plate-like body is more than an end portion of the reinforcing panel. It has an extending extension portion, and the extension portion is provided with the connecting portion and the joining portion .

According to the seismic reinforcement unit configured in this way, the partial plate-like bodies are erected and fixed on both sides of the reinforcing panel, and the partial plate-like bodies can be joined to the beams of the existing building at the joints. It can be connected to a partial plate-like body fixed to another reinforcing panel at the connecting portion.
That is, since the continuous plate-like body constituting the environmental louver is divided, it is lightweight and easy to carry before construction, and workability can be improved.
Then, if the seismic reinforcement unit is joined to the beam of the existing building, the partial plate of the other seismic reinforcement unit is connected to the partial plate in the longitudinal direction, and the other seismic reinforcement unit is joined to the beam, the above-mentioned It is possible to construct a seismic reinforcement structure such as.
Further, since the extension portion of the partial plate-like body extending from the end portion of the reinforcing panel is provided with a connecting portion and a joint portion, the connecting portion connecting the partial plate-shaped bodies can be joined to the beam by the joint portion. Therefore, the joint portion can both fix the connecting portion of the partial plate-like body and join the beam, and the work efficiency is good.

Further, the method for constructing the seismic reinforcement structure according to the present invention is the method for constructing the seismic reinforcement structure using the above-mentioned seismic reinforcement unit, and the joint portion of the first seismic reinforcement unit made of the seismic reinforcement unit is attached to the joint. The first step of joining to the beam of an existing building and the connecting portion of the second seismic reinforcement unit composed of the seismic reinforcement unit are connected to the connecting portion of the first seismic reinforcement unit, and the second seismic reinforcement unit. It is characterized by including a second step of joining the joint portion of the above to the beam of the existing building.

According to the method for constructing the seismic reinforcement structure configured in this way, the joint portion of the first seismic reinforcement unit is joined to the beam of the existing building, and the connection portion of the second seismic reinforcement unit is the connection portion of the first seismic reinforcement unit. And join the joint of the second seismic reinforcement unit to the beam of the existing building. Therefore, it is possible to construct the above-mentioned seismic reinforcement structure by using a plurality of seismic reinforcement units.

According to the seismic reinforcement structure, the seismic reinforcement unit, and the method for constructing the seismic reinforcement structure according to the present invention, it is possible to easily improve the seismic strength while ensuring the appearance quality.

It is a partial perspective view of the existing building in which the seismic reinforcement structure which concerns on 1st Embodiment of this invention was constructed. It is a partial perspective view which shows the outer frame of the existing building before constructing the seismic reinforcement structure which concerns on 1st Embodiment of this invention. It is a partial horizontal sectional view of the existing building in which the seismic reinforcement structure which concerns on 1st Embodiment of this invention was constructed. It is a horizontal sectional view of a plate-like body and a reinforcing panel in the seismic reinforcement structure which concerns on 1st Embodiment of this invention. The seismic reinforcement structure according to the second embodiment of the present invention is shown, (a) is a partial front view, and (b) is a partial perspective view. The seismic reinforcement unit used for the seismic reinforcement structure according to the second embodiment of the present invention is shown, (a) is a front view, and (b) is a horizontal sectional view. It is a figure explaining the construction method of the seismic reinforcement structure which concerns on 2nd Embodiment of this invention, (a) shows the front process, (b) shows the back process. It is a graph which shows the found area of the reinforcement panel in the seismic reinforcement structure which concerns on 2nd Embodiment of this invention. A modified example of the seismic reinforcement structure according to the second embodiment of the present invention is shown, (a) is a partial front view, and (b) is a partial perspective view. It is a figure explaining the modification of the method of constructing the seismic reinforcement structure which concerns on 2nd Embodiment of this invention, (a) shows the front process, (b) shows the back process.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
FIG. 1 is a partial perspective view of an existing building in which the seismic reinforcement structure of the present invention is constructed. FIG. 2 is a partial perspective view showing an outer frame of an existing building before the seismic reinforcement structure is constructed. FIG. 3 is a partial horizontal sectional view of an existing building in which a seismic reinforcement structure is constructed. FIG. 4 is a horizontal sectional view of a plate-like body and a reinforcing panel in a seismic reinforced structure.

In the first embodiment, the seismic reinforcement structure 10 shown in FIG. 1 is constructed outside the existing building 20 shown in FIG.
As shown in FIG. 2, the existing building 20 before the construction of the seismic reinforcement structure 10 is provided with an outer frame 21 facing the outside as shown in FIG. The outer frame 21 has a plurality of existing columns 23 extending in the vertical direction, and a plurality of existing beams 25 erected between the existing columns 23 and arranged apart from each other in the vertical direction. An opening 27 is provided between the existing pillars 23 of the outer frame 21.

As shown in FIG. 1, the seismic reinforcement structure 10 includes a plurality of plate-like bodies 31 which are arranged so as to project outward from the existing building 20 and extend in the vertical direction over a wide range outside the existing building 20, preferably as a whole. ing.
Further, the length in the vertical direction of each plate-shaped body 31 in the longitudinal direction is formed to be substantially equal to the height in the vertical direction of the outer frame 21 of the existing building 20.

The plurality of plate-shaped bodies 31 form the environmental louver 13 by being arranged in parallel with a gap in the horizontal direction. The environmental louver 13 is arranged on the outer wall surface of the building for the purpose of improving the environmental performance such as shielding the direct sunlight and reducing the cooling load. Further, the environmental louver 13 has a structure in which a plurality of plate-shaped bodies 31 are arranged in parallel at intervals so that light or wind from the outside in a predetermined direction can pass therethrough.

In the present embodiment, the plurality of plate-shaped bodies 31 are installed so that the intervals between the plate-shaped bodies 31 adjacent to each other are even. Further, the distance between the plurality of plate-shaped bodies 31 is narrower than the width of the opening 27 such as the window portion provided in the existing building 20. In other words, a plurality of plate-shaped bodies 31 are arranged outside the opening 27 of the existing building 20.

A flat plate-shaped reinforcing panel 35 is arranged between the adjacent plate-shaped bodies 31.
The reinforcing panels 35 are continuously arranged between a plurality of existing beams 25 arranged apart from each other in the vertical direction. The reinforcing panel 35 is not arranged in all the gaps 37 between the plate-shaped bodies 31, but is arranged by closing a part of the gaps 37, and is not arranged in the remaining gaps 37 and is maintained in an open state. ..

In the present embodiment, the reinforcing panels 35 are arranged over substantially the entire length of the gap 37 between the plate-shaped bodies 31 in the longitudinal direction. Between the plate-shaped bodies 31, the closing portion 37a in which the reinforcing panels 35 are continuously arranged over substantially the entire length in the vertical direction and the gap 37 is closed, and the open portion 37b in which the reinforcing panel 35 is not arranged are arranged in the horizontal direction. Are arranged alternately.

As shown in FIG. 3, each reinforcing panel 35 is arranged along the edge of each plate-shaped body 31 on the existing building 20 side, and is arranged along the outer surface of the existing building 20.

The reinforcing panel 35 may be provided separately from the plate-shaped body 31 and joined to the existing column 23 or the existing beam 25, but in the present embodiment, the reinforcing panel 35 is arranged in the gap 37 between the pair of plate-shaped bodies 31. The reinforcing panel 35 is integrally connected to each plate-shaped body 31 on both sides.

The plate-shaped body 31 and the reinforcing panel 35 are made of reinforced concrete and are formed in a flat plate shape. In the present embodiment, the plate-shaped body 31 and the reinforcing panel 35 are integrally manufactured in advance at a factory or the like by precast reinforced concrete (PCa).

As shown in FIG. 4, a plurality of reinforcing bars 38 extending in the vertical direction and the horizontal direction are arranged inside the plate-shaped body 31 and the reinforcing panel 35. These reinforcing bars 38 are buried in the concrete 39.

The plate-shaped body 31 and the reinforcing panel 35 are joined to a plurality of existing beams 25 of the existing building 20 by a joint portion 33. The joint portion 33 is configured by fixing a construction anchor at a joint position of an existing column 23 or an existing beam 25, and arranging and filling a non-shrink mortar with each plate-shaped body 31 arranged.

Further, each plate-shaped body 31 may be firmly fixed to the existing pillar 23 or the existing beam 25 by providing the joint portion 33 in the opening portion 37b between the plate-shaped bodies 31 adjacent to each other.

The reinforcing panel 35 may be directly joined to the existing columns 23 and the existing beams 25 of the existing building 20, but in this embodiment, each reinforcing panel 35 is a joint portion between the plate-shaped body 31 and the plate-shaped body 31. It is joined to the existing beam 25 and via 33.

According to the seismic reinforcement structure 10 of the first embodiment, a plurality of plate-shaped bodies 31 project outward from the existing building 20 and extend in the vertical direction, and in parallel with a gap in the width direction of the existing building 20. Since it is arranged, the plate-shaped body 31 functions as an environmental louver 13 that shields direct sunlight.
Since the plurality of plate-shaped bodies 31 are joined to the existing beam 25 of the existing building 20 by the joint portion 33, the plate-shaped body 31 functioning as the environmental louver 13 can be used as a member for ensuring the strength of the existing building 20. , It is possible to improve the seismic strength of the existing building 20.
Further, since the reinforcing panels 35 arranged between a part of the adjacent plate-shaped bodies 31 are connected to the existing beam 25 via the plate-shaped bodies 31, seismic strength corresponding to the arrangement amount of the reinforcing panels 35 is secured. can do.

Further, in the seismic reinforcement structure 10, as shown in FIG. 4, since the adjacent plate-shaped bodies 31 are connected by the reinforcing panel 35, the plurality of plate-shaped bodies 31 protruding outward from the existing building 20 and the existing ones The reinforcing panel 35 arranged along the building 20 is integrated. Therefore, a large moment of inertia of area of the seismic reinforcing structure 10 can be secured, and seismic strength can be greatly improved.

For example, in FIG. 4, when B = 500 mm, D = 700 mm, b = 150 mm, and d = 500 mm, the moment of inertia of area I _P1 of the reinforcing panel 35 alone is as shown in the equation (1).

On the other hand, when the plate-like bodies 31 are erected and joined in the orthogonal direction on both sides of the reinforcing panel 35 as shown in FIG. 4, the moment of inertia of area I _P2 is as shown in the equation (2).

Therefore, the effect of increasing the moment of inertia of area is 6.81 times as shown in the equation (3), and the seismic strength can be remarkably improved.

Further, since the plate-shaped body 31 and the reinforcing panel 35 are made of reinforced concrete, the appearance quality can be ensured in a state where the plate-shaped body 31 and the reinforcing panel 35 are exposed to the outside of the existing building 20 and installed.
Further, since a gap through which light and wind can pass is formed between the adjacent plate-shaped bodies 31, the appearance of the existing building 20 can be visually recognized from the outside, and the opening 27 such as a window can be opened. It can be secured and the deterioration of the appearance quality of the existing building 20 can be prevented.
As a result, according to the seismic reinforcement structure of the present invention, it is easy to improve the seismic strength while ensuring the appearance quality.

Further, the plate-shaped body 31 and the reinforcing panel 35 are joined to the existing beam 25 via the joint portion 33. Therefore, the mutual joint strength between the existing beam 25 of the existing building 20 and the reinforcing panel 35 and the plate-shaped body 31 can be improved, and the reinforcing effect of the reinforcing panel 35 can be increased.

Further, since the reinforcing panels 35 are continuously installed between the existing beams 25 arranged vertically spaced apart from each other, the reinforcing effect of the reinforcing panels 35 between the existing beams 25 is increased to efficiently improve the seismic strength. can do.

Further, the distance between the plate-shaped bodies 31 is narrower than the width of the opening 27 provided between the existing columns 23 of the existing building 20, and the reinforcing panels 35 are arranged between the plate-shaped bodies 31. Therefore, the vicinity of the opening 27 in the existing building 20 can be reinforced, and it is easy to improve the seismic strength even in the existing building 20 having a large opening 27.

[Second Embodiment]
5 (a) and 5 (b) are a partial front view and a partial perspective view of the seismic reinforcement structure according to the second embodiment. 6A and 6B are a front view and a horizontal sectional view of the seismic reinforcement unit used in the seismic reinforcement structure according to the second embodiment. 7 (a) and 7 (b) are pre-processes and post-processes of the method for constructing the seismic reinforcement structure according to the second embodiment.

In the second embodiment, the seismic reinforcement structure 10 is constructed by using a plurality of seismic reinforcement units 40.
The seismic reinforcement structure 10 of the second embodiment is constructed outside the outer frame of the existing building 20 shown in FIG. Here, the arrangement of the continuous plate-shaped bodies 31 is the same as that of the first embodiment, and the shape, size, and arrangement of the reinforcing panel 35 are different from those of the first embodiment.

The reinforcing panel 35 is partially arranged in the gap 37 between the adjacent plate-shaped bodies 31.
Specifically, a reinforcing panel 35 having the same width as the gap 37 between adjacent plate-shaped bodies 31 and having a short length in the vertical direction is partially arranged. Closed portions 37a in which the reinforcing panel 35 exists and open portions 37b in which the reinforcing panel 35 does not exist are provided at different positions in the gap 37 between the plate-shaped bodies 31 in the longitudinal direction.

By adjusting the arrangement of the plurality of reinforcing panels 35, the arrangement of the closing portion 37a and the opening portion 37b constitutes a design appearance that can be visually recognized from the outside of the existing building 20.
The length of each reinforcing panel 35 in the vertical direction is arbitrary, but in the second embodiment, the reinforcing panels 35 are continuously formed between the existing vertical beams 25.

Also in the second embodiment, the plurality of plate-shaped bodies 31 are joined to the existing columns 23 and the existing beams 25 of the existing building 20 by the joint portion 33 as in the first embodiment.
The position of the joint portion 33 may be an intersection with the existing column 23 or the existing beam 25, but in this embodiment, the joint portion 33 is provided so as to be continuous with the reinforcing panel 35, and each reinforcing panel 35 is a joint portion. It is joined to the existing beam 25 via 33.

As shown in FIGS. 6A and 6B, the seismic reinforcement unit 40 includes a plate-shaped reinforcing panel 35 and a plurality of partial plate-shaped bodies 31a erected and fixed in parallel on both sides of the reinforcing panel 35. A connecting portion 41 for connecting the partial plate-shaped body 31a is provided. Further, the partial plate-shaped body 31a is provided with a joining portion 43 for joining to the existing beam 25 of the existing building 20.

In the present embodiment, the partial plate-shaped body 31a is provided with an extension portion 45 which is longer than the reinforcing panel 35 and extends beyond the end portion of the reinforcing panel 35. The extension portion 45 is provided with a connecting portion 41 for connecting to the partial plate-like body 31a of the other seismic reinforcement unit 40 in the longitudinal direction, and a joining portion 43 for joining the existing beam 25 with the joining portion 33. ing.

The connecting portion 41 and the joining portion 43 are provided in the extension portions 45 at the four corners, but the shapes, numbers, and positions of the connecting portion 41 and the joining portion 43 are appropriately set according to the arrangement portion and the like.
In the case of FIG. 6A, the connecting portion 41 is provided at one of the four corners, and is composed of protrusions that can be inserted into the end portion of the partially plate-shaped body 31a to be connected. Further, the joining portions 43 are provided on the remaining three sides, and are formed in a shape corresponding to the shape of the existing beam 25 to be joined.
The seismic reinforcement unit 40 is formed in advance in a three-dimensional shape by PCa in which a reinforcing bar 38 is embedded.

In order to construct the seismic reinforcement structure 10 by using a large number of such seismic reinforcement units 40, it is performed as shown in FIGS. 7A and 7B.
First, as a first step, the joint portion 43 of the first seismic reinforcement unit 40a is joined to the existing beam 25 of the existing building 20 by the joint portion 33.
Next, as a first step, as shown in FIG. 7A, the connecting portion 41 of the second seismic reinforcement unit 40b is connected to the joint portion 43 of the first seismic reinforcement unit 40a fixed to the existing beam 25. For example, a mounting hole (not shown) into which the connecting portion 41 can be inserted may be formed in advance in the joining portion 43, and the connecting portion 41 may be inserted into the mounting hole to be connected to each other. Further, the joint portion 43 of the second seismic reinforcement unit 40b is joined to the existing beam 25 of the existing building 20.

In order to join the joint portion 43 with the joint portion 33, the construction anchor 33a is fixed at the joint position of the existing column 23 and the existing beam 25, and the connecting portion 41 and the joint portion 43 are arranged at predetermined positions, and the non-shrink mortar is used. Join by filling 33b.
After that, by repeating the second step, the plurality of partial plate-shaped bodies 31a form the plate-shaped body 31 continuously in the longitudinal direction, and the plurality of plate-shaped bodies 31 are arranged in parallel to form the existing pillar 23 and the existing pillars 23. It can be joined to the beam 25.
Further, each reinforcing panel 35 is arranged and formed so as to be continuous between the existing beams 25, and is joined to the existing beam 25 via the joint portion 33.
As a result, the seismic reinforcement structure 10 is constructed.

Even with the seismic reinforcement structure 10 of the second embodiment as described above, the same effect as that of the first embodiment can be obtained.
Further, according to the seismic reinforcement structure of the second embodiment, since the closing portion 37a and the opening portion 37b are provided between the adjacent plate-shaped bodies 31 at different positions in the longitudinal direction, the closing portion 37a and the opening portion 37b are provided at different positions in the longitudinal direction. The design appearance can be configured by adjusting the positions of the 37a and the opening portion 37b. Therefore, the structure of the seismic reinforcement structure can be used as it is as a design appearance, and excellent appearance quality can be ensured without using an exterior member.

Further, according to the seismic reinforcement unit 40 used in the second embodiment, the partial plate-shaped bodies 31a are erected and fixed in parallel on both sides of the reinforcing panel 35, and the partial plate-shaped bodies 31a are fixed at the joint portion 33. Can be joined to the existing beam 25 of the existing building 20 and can be connected to the other partial plate-like body 31a in the longitudinal direction at the connecting portion 41.
That is, since the continuous plate-shaped body 31 constituting the environmental louver 13 is divided, it is lightweight and easy to carry before construction, and workability can be improved.
Then, the seismic reinforcement unit 40 is joined to the existing beam 25 of the existing building 20, and the partial plate-like body 31a of the other seismic reinforcement unit 40 is connected to the partial plate-like body 31a in the longitudinal direction, and the other seismic reinforcement unit 40 is connected. Is joined to the existing beam 25, it is possible to construct the seismic reinforcement structure as described above.

Further, according to the seismic reinforcement unit 40 used in the second embodiment, since the extension portion 45 of the partial plate-shaped body 31a formed longer than the reinforcement panel 35 has the connecting portion 41 and the joining portion 43. The connecting portion 41 in which the partial plate-shaped bodies 31a are connected to each other in the longitudinal direction can be joined to the existing beam 25 by the joining portion 33. Therefore, the joint portion 33 can both fix the connecting portion 41 of the partial plate-shaped body 31a and join the existing beam 25, and the work efficiency is high.

Then, according to the method of constructing the seismic reinforcement structure 10 using such a seismic reinforcement unit 40, the joint portion 43 of the first seismic reinforcement unit 40a is joined to the existing beam 25 of the existing building by the joint portion 33, and the second The connecting portion 41 of the seismic reinforcement unit 40b is connected to the connecting portion 41 of the first seismic reinforcement unit 40a, and the joint portion 33 of the second seismic reinforcement unit 40b is joined to the existing beam 25 of the existing building. Therefore, it is possible to construct the seismic reinforcement structure as described above by using the plurality of seismic reinforcement units 40.

Further, according to the method for constructing the seismic reinforcement structure 10 using the seismic reinforcement unit 40, the seismic reinforcement unit 40 having the reinforcement panel 35, the partial plate-like body 31a without the reinforcement panel 35, and the continuous plate-like body 31 By using in combination, the arrangement ratio of the reinforcing panel 35 can be adjusted.
As a result, by appropriately adjusting the found area of the reinforcing panel 35 in the environmental louver 13, it is possible to adjust the solar radiation acquisition rate and the aperture ratio of the existing building 20 after reinforcement according to the building use.

For example, as shown in FIG. 8, in case C in which an environmental louver composed of a plurality of plate-like bodies 31 is constructed, a plurality of plate-like bodies are formed with respect to the found area I of case 0 showing a state in which the seismic reinforcement structure 10 is not constructed. The found area II for 31 minutes increases.
Further, in the case B in which the reinforcing panel 35 is arranged in a small proportion, the found area III for the reinforcing panel 35 is increased in addition to the found areas I and II. Further, in the case A arranged in a staggered pattern as shown in FIG. 9 described later, a large found area III of 35 minutes of the reinforcing panel is added to the found areas I and II.
In the case of FIG. 8, it was possible to adjust the opening efficiency of the existing building 20 after reinforcement between 33% and 60% by adjusting the found area III for 35 minutes of the reinforcing panel.

The above embodiments 1 and 2 can be appropriately changed within the scope of the present invention.
For example, in the above, as an example of arranging the reinforcing panels 35, long reinforcing panels 35 are arranged at intervals in the lateral direction as shown in FIG. 1, and short reinforcing panels 35 are arranged diagonally as shown in FIG. However, it is not limited in any way. For example, it is possible to arrange the arrangement with regularity as shown in FIGS. 9A and 9B, or to arrange the arrangement completely freely without regularity.

Further, when the seismic reinforcement structure 10 is constructed by using the seismic reinforcement unit 40, in the above embodiment, an example in which the joint portion 33 is arranged only between the joint portions 43 of the partial plate-shaped body 31a has been described, but the present invention is not limited. For example, as shown in FIGS. 10A and 10B, when the strength of the existing beam 25 or the existing column 23 of the existing building 20 is low, the joint portion 33 such as a non-shrink mortar is applied to the entire existing beam 25 or the existing column 23. It is also possible to reinforce the existing beam 25 and the existing column 23 itself by laminating.

10 ... Seismic reinforcement structure 13 ... Environmental louver 20 ... Existing building 21 ... Outer frame 23 ... Existing pillar 25 ... Existing beam 27 ... Opening 31 ... Plate-like body 31a ... Partial plate-like body 33 ... Joint 33a ... Construction anchor 33b ... Non-shrink mortar 35 ... Reinforcing panel 37 ... Gap 37a ... Closing part 37b ... Opening part 40 ... Seismic reinforcement unit 40a ... First seismic reinforcement unit 40b ... Second seismic reinforcement unit 41 ... Connecting part 43 ... Joint part 45 ... Extension part

Claims (7)

A plurality of plate-like bodies that protrude outward from the existing building, extend in the vertical direction, and are arranged with a gap in the width direction of the existing building.
A joint that joins the plate-like body to the beam of the existing building,
A reinforcing panel for connecting a part of the adjacent plate-shaped bodies is provided.
The plate-shaped body and the reinforcing panel are made of reinforced concrete .
The reinforcing panel is a seismic reinforcing structure characterized in that it is arranged along the edge of the plate-shaped body on the side of the existing building . The seismic reinforcement structure according to claim 1, wherein the reinforcing panel is joined to the beam via the joint portion. The seismic reinforcement structure according to claim 1 or 2, wherein the reinforcing panels are continuously formed between the beams arranged vertically separated from each other. Between the adjacent plate-shaped bodies, a closed portion in which the reinforcing panel is continuously arranged in the vertical direction and an open portion in which the reinforcing panel is not arranged are provided. The seismic reinforcement structure according to any one of claims 1 to 3. An opening is provided between the pillars of the existing building.
The seismic reinforcement structure according to any one of claims 1 to 4, wherein the distance between the adjacent plate-shaped bodies is narrower than the width of the opening. With a plate-shaped reinforcing panel
Partial plate-like bodies that are erected and fixed on both sides of the reinforcing panel,
A joint that joins the partial plate to the beam of an existing building,
A connecting portion for connecting the partial plate-like body to the partial plate-like body fixed to the other reinforcing panel is provided .
The partial plate-like body has an extension portion extending from an end portion of the reinforcing panel.
A seismic reinforcement unit characterized in that the extension portion is provided with the connection portion and the joint portion . A method for constructing a seismic reinforcement structure using the seismic reinforcement unit according to claim 6 .
The first step of joining the joint portion of the first seismic reinforcement unit composed of the seismic reinforcement unit to the beam of the existing building,
The connecting portion of the second seismic reinforcement unit composed of the seismic reinforcement unit is connected to the connecting portion of the first seismic reinforcement unit, and the joint portion of the second seismic reinforcement unit is joined to the beam of the existing building. The second step to do
A method of constructing a seismic reinforced structure characterized by being equipped with.

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