JP2009013699A - Aseismic strengthening method for apartment house - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an aseismic strengthening method for an apartment house, i.e., a method which can be called the "individual earthquake resistance" having no difficulty of "forming an agreement" among the dwellers which is a problem liable to occur when the apartment house is retrofitted for earthquake, and capable of "immediately" performing the construction when there is the positive will of the dwellers of the dwelling units. <P>SOLUTION: In this aseismic strengthening method for an apartment house 1, a step of assembling a rectangular frame-like earthquake resistant reinforcement frame body 3 by mutually connecting wide plate-like earthquake resistant reinforcement members 4 internally brought into contact with the upper surface of a floor slab 2a, the inner surface of the side wall 2b, and the lower surface of the upper story slab 2c inside a dwelling unit 2 and adhering and fixing the rear surfaces of the earthquake resistant reinforcement members 4 to the opposed upper surface of the floor slab 3a, the inner surface of the side wall 2b, and the lower surface of the upper story slab 2c is repeated to assemble a plurality of earthquake resistant reinforcement frame bodies 3, 3 at intervals inside the dwelling unit 2. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention belongs to the technical field of an existing seismic reinforcement method for an apartment building, more specifically, an earthquake-proof reinforcement method implemented in a dwelling unit for each unit of an apartment building. However, the seismic reinforcement method of the present invention can be similarly applied to a newly built apartment building.

Currently, there are 2 million existing apartment buildings in Japan that lack seismic performance.
The biggest obstacle to the seismic retrofitting of these existing apartment buildings is that the owners of each dwelling unit have different circumstances, and there are differences in the idea of seismic safety.
The current law concerning the divisional ownership of buildings (revised in June 2006) has the difficulty of forming a consensus among residents (by a resolution by a gathering of more than 3/4 of the category owners and voting rights). It is extremely difficult to reach an overall agreement to implement seismic retrofitting work. Therefore, the fact is that most apartment buildings are left with insufficient seismic performance.
However, on the other hand, there are many residents who are suffering from fear and anxiety about earthquakes and who want to implement seismic retrofits even if they are not. They want to survive even if an earthquake occurs, and they are willing to spend the work and cost of earthquake-proof repairs.
Therefore, there is an urgent need for a construction method that allows residents living in existing apartment buildings to carry out seismic reinforcement work for each unit they occupy.

However, both conventional seismic retrofitting and seismic retrofitting methods for existing apartment buildings are generally carried out on a single building basis, and can be used to implement seismic retrofitting work for each unit owned by a resident. At present, no technology is found.
For example, the seismic reinforcement structure of the existing reinforced concrete building described in the following Patent Document 1 or the seismic reinforcement method of the RC structure opening disclosed in the Patent Document 2 is also used for the column beam frame and the steel brace of the building. As an integration means, anchor bolt fastening, or a method of attaching anchors or studs and filling mortar is adopted, and the construction of one building unit is a premise.
Moreover, in the case of the method of anchor bolting as a means of integrating the column beam frame of the building and the steel frame brace, or the method of filling the mortar by attaching anchors and studs, it involves construction with high noise and vibration, so the residents of adjacent dwelling units There is a problem in that “in-the-room” construction is not allowed and construction takes a long time.

Japanese Patent Publication No.62-31143 Japanese Patent Publication No. 7-51803

  Therefore, the object of the present invention is that existing dwelling buildings that are vulnerable to earthquakes because of their long construction years and are aging, or because they are existing inaccurate buildings that do not conform to the current law, Residents can carry out in units of exclusive units, in other words, there is no difficulty of consensus building of residents, which is an obstacle that tends to occur in earthquake-resistant repairs of apartment buildings, and even the positive intentions of the residents of each unit If there is, it is possible to carry out “immediately”, that is, to provide a seismic reinforcement method for multi-family buildings, which can be called “individual earthquake resistance”.

The next object of the present invention is not only to be able to implement one dwelling unit that each owner of the apartment building occupies individually as a construction unit, but also to have any adverse effect on the appearance and shared parts of the apartment building. The earthquake-resistant repair and seismic reinforcement can be carried out without causing any inconvenience (with no inconvenience), and even if the building is severely damaged at the time of the earthquake, the seismic reinforcement frame will act as a shelter. It is to provide a seismic reinforcement method for an apartment building that can be used to protect the people living in the dwelling unit and thus eliminate the fear and anxiety about the earthquake of residents living in the seismic reinforcement dwelling unit.
A further object of the present invention is “individual earthquake resistance” in units of one dwelling unit. However, if the number of dwelling units that have undergone such seismic reinforcement increases one after another over time, the seismic performance of the entire apartment building gradually increases as a result. The aim is to provide a seismic reinforcement method for multi-dwelling buildings that can be expected to grow and improve the effectiveness of seismic reinforcement and eventually transform into a healthy building with sufficient seismic performance.

As means for solving the above problems, the seismic reinforcement method for an apartment building according to the invention described in claim 1 is:
It is a seismic reinforcement method in the apartment house building 1,
While assembling a rectangular frame-shaped seismic reinforcement frame 3 by connecting a wide plate-shaped seismic reinforcement member 4 inscribed in the upper surface of the floor slab 2a in the dwelling unit 2, the inner surface of the side wall 2b, and the lower surface of the upper floor slab 2c. The process of adhering and fixing to the upper surface of the floor slab 2a, the inner surface of the side wall 2b, and the lower surface of the upper floor slab 2c facing the back surface of the seismic reinforcement member 4 is repeated, with a gap in the dwelling unit 2. A plurality of seismic reinforcing frame bodies 3 and 3 are assembled.
The seismic reinforcement method for apartment buildings according to the invention described in claim 2 is:
The seismic reinforcement frame construction method according to the first aspect is applied to a plurality of dwelling units of the apartment house building 1.

According to the seismic retrofitting method of the present invention, residents of the housing complex 1 who are vulnerable to earthquakes due to long building years and are aging, or because they are existing inaccurate buildings that do not conform to the current law, and lack earthquake resistance. As long as the will of the occupants who occupy each dwelling unit 2 is solidified, the seismic reinforcement can be carried out individually as an individual unit as a construction unit.
In other words, there is no difficulty of “consensus building” among residents, which is an obstacle that tends to occur in the earthquake-proof repair of the apartment house building 1, and it can be implemented “immediately” by the resident's idea of each dwelling unit 2, and the implementing dwelling unit 20 Seismic safety can be ensured every time.
Moreover, although the seismic retrofitting method of the present invention can be carried out at will by the will of the occupants who occupy each dwelling unit 2, it does not have any adverse effect on the appearance and shared parts of the apartment house building, or Seismic retrofitting and seismic retrofitting work that do not bother others.
And about the dwelling unit 20 which implemented the earthquake-proof reinforcement method of this invention, even when the said apartment house building 1 is severely damaged at the time of an earthquake, the earthquake-resistant reinforcement frame 3 exhibits the effect | action and effect as a shelter, Since the safety of the resident can be ensured, at least the fear and anxiety about the earthquake of the resident living in the implementation unit 20 can be wiped out.
Thus, when the seismic retrofitting method of the present invention is successively increased over time as “individual earthquake resistance” in units of one dwelling unit (see FIGS. 2 and 3), as a result, the seismic performance of the entire apartment building 1 is improved. It is gradually improved, and the effectiveness of seismic reinforcement can be demonstrated. Finally, the apartment building 1 can be expected to change into a healthy building with sufficient seismic performance and grow.

This is implemented as a seismic reinforcement method for existing (or newly built) apartment buildings.
A rectangular frame-shaped seismic reinforcement frame 3 is assembled by connecting a wide plate-shaped seismic reinforcement member 4 inscribed in the upper surface of the floor slab 2a in the dwelling unit 2, the inner surface of the side wall 2b, and the lower surface of the upper floor slab 2c. Further, the process of adhering and fixing the back surface of the seismic reinforcement member 4 to the upper surface of the floor slab 2a facing the inner surface of the side wall 2b and the lower surface of the upper floor slab 2c is repeated, so that the space in the dwelling unit 2 is increased. Open and assemble a plurality of seismic reinforcement frames 3.
By implementing the above-mentioned seismic reinforcement frame construction method to the plurality of dwelling units 2 of the apartment building 1 one after another, the effectiveness of the earthquake-proof reinforcement is expressed in the entire apartment building 1.

Next, the earthquake-proof reinforcement method in the apartment house building which concerns on this invention is demonstrated based on the Example shown on drawing.
First, FIG. 1 shows a panoramic view of an existing apartment house building 1 which is a suitable target on which the seismic reinforcement method of the present invention is implemented. FIG. 2 and FIG. 3 conceptually show how the number of implemented dwelling units 20 in which the seismic reinforcement method of the present invention has been implemented is gradually increased with each dwelling unit 2 of the apartment building 1 as a construction unit.

Next, FIG. 4 has shown notionally the condition which assembled the earthquake-proof reinforcement frame 3 in the implementation dwelling unit 20. FIG. The illustrated seismic reinforcement frame 3 includes a wide plate-like seismic reinforcement member 4 which is inscribed in the upper surface of the floor slab 2a and the inner surface of the side wall 2b and the lower surface of the upper floor slab 2c in the implementation unit 20 by a joint 5. Connected and assembled into a rectangular frame.
Therefore, when the present invention is implemented in the dwelling unit 2 that has already lived in the existing apartment building 1, it is a matter of course that the resident is requested to temporarily evacuate (change home), and the inside of the implementing dwelling unit 20. Seismic retrofitting work can be started from the preparation to remove all or all necessary items of daily necessities and fixtures and create a hollow interior in the dwelling unit 2.

Specifically, as shown in FIGS. 5 and 6, a material having strength and rigidity effective for seismic reinforcement, for example, a wide steel plate having a width of about 1 m and a thickness of about 25 mm is used as the seismic reinforcement member 4. As an assembly part (part) prepared by cutting this into a factory and cutting it into a size and shape suitable for the internal dimensions of the implementation unit 20 or bending it, it is carried into the implementation unit 2 Assemble.
On the other hand, as a joint 5 for connecting the seismic reinforcement member 4 (assembled part), a mechanical joint is employed in this embodiment.
The mechanical joint 5 shown in FIG. 5 is one seismic reinforcement member 4 (assembled part) to be connected in advance to a joint main member 5 </ b> A formed in a round ring shape surrounding the seismic reinforcement member 4 made of a wide steel plate. Fit in. When the joint ends of the two seismic reinforcement members 4 (assembled parts) are butted together, the joint portions of the joint ends are first formed into two joint sub-members 5B and 5B formed into a U-shaped clip shape. In addition, the joint main member 5A formed into the above-mentioned ring shape is fitted to the outer periphery of the two joint sub-members 5B and 5B so as to withstand the shearing force and axial force during an earthquake. Connect securely.

In order to ensure the bonding strength of the mechanical joint 5 and to make it effective, at least one rectangular groove 4A for bonding is formed at the bonding end of the seismic reinforcing member 4. On the other hand, on the inner surface (mainly upper and lower surfaces) of the joint sub-member 5B, a cotter 5C that fits closely into the rectangular groove 4A of the seismic reinforcing member 4 is prepared at the joint end of the two seismic reinforcing members 4. The same number as 4A and 4A is formed at the same pitch. Further, a corner surface 5D that facilitates the fitting operation is inclined at the corner of the end portion of the joint sub-member 5B, which is the end of the joint main member 5A formed in the above-mentioned ring shape. It is formed in a planar shape.
Therefore, when the joining end portions of the two seismic reinforcing members 4 to be joined are brought into contact with each other, the cotter 5C of the joint sub member 5B having a U-shaped clip shape is fitted along the rectangular grooves 4A and 4A of the joining end portions. Then, the two joint sub-members 5B5B are tightly clamped from both sides. Thereafter, the joint main member 5A formed into the ring-shaped ring shape is fitted to the outer periphery of the two joint sub-members 5B and 5B using a hydraulic jack or the like prepared in advance, and the shearing force during an earthquake and Securely connect to a structure that can withstand axial force. At this time, since the chamfered surface 5D is formed in an inclined surface on the outer surface of the joint sub-member 5B, the fitting of the joint main member 5A can be performed smoothly and smoothly. And the junction part of the said 2 seismic reinforcement member 4 can implement | achieve firm joining reliably by the coupling | bonding of the rectangular groove 4A and the cotter 5C.

It is not an idea to limit the seismic reinforcing member 4 to the wide steel plate. Any material can be used as long as it has strength and rigidity effective for seismic reinforcement and has processability and handling properties suitable for construction. For example, a reinforced plastic, a precast concrete member, a laminated wood, or a composite material thereof may be used.
Similarly, it is not an idea to limit the joint 5 to a mechanical joint. What is necessary is just to employ | adopt and implement an appropriate and effective joint structure according to the material used for the earthquake-proof reinforcement frame 3. FIG. A bolt joint, an adhesive joint, or a combination of these may be employed.

The embodiment of FIG. 4 assembles a rectangular frame-shaped seismic reinforcement frame 3 in the dwelling unit 2 by the above-described materials, means and methods, and each seismic reinforcement frame 3 is mounted on the back side of the seismic reinforcement member 4. For example, an epoxy adhesive 6 is filled (see FIG. 6), for example, into the gaps between the facing floor slab upper surface 2a and the inner surface of the side wall 2b and the lower surface of the upper floor slab 2c. A situation is shown in which a plurality (necessary number) of seismic reinforcement frame bodies 3 and 3 are assembled inside the dwelling unit 20 with an appropriate interval for seismic reinforcement.
As can be seen from FIG. 4, most of the existing apartment buildings 1 have a wall-type structure divided by so-called inter-beam direction partition walls, and the dwelling unit 2 has a rectangular cylindrical shape penetrating in the inter-beam direction. In view of the structure formed, the plurality (necessary number) of seismic reinforcing frame bodies 3 are usually assembled in an arrangement inscribed along the cross-section in the carry direction in the dwelling unit 20.

  Thus, FIGS. 7 and 8 reproduce the dwelling space with the seismic reinforcement frame 3 assembled inside the above-described dwelling unit 20, and further with a finishing material 7 that provides a design and atmosphere suitable as a dwelling unit inside. Shows an example of the landscape. The material, type, finishing method, etc. of the finishing material 7 used here are selected and implemented according to the structure of each dwelling unit 2 and the resident's preference.

  The implementation unit 20 in which the seismic retrofitting method of the present invention was implemented with each unit 2 ... of the existing apartment building 1 as a construction unit is shown in FIG. 2 and FIG. Thus, it will be understood that the seismic performance of the multi-dwelling building 1 is inevitably improved as a whole. Although it is ideal that all the dwelling units 2 are transformed into the implementing dwelling units 20, even if the implementing dwelling units 20 increase to a certain rate or the implementing dwelling units 20 do not reach all units, If the pattern arrangement is effectively increased, it can be expected that the seismic performance improvement effect of the apartment house building 1 will reach a certain safety level.

  Although the present invention has been described above based on the illustrated embodiment, the technical idea of the present invention is not limited to the embodiment. It should be noted that various embodiments are included in the category of design changes, modifications, and applications that are made by those skilled in the art as needed without departing from the scope and spirit of the present invention.

It is the elevation which showed an example of the apartment house building where the earthquake-proof reinforcement method of this invention is implemented. It is the conceptual diagram which illustrated the dwelling unit by which the earthquake-proof reinforcement method of this invention was implemented to said apartment house building. It is the conceptual diagram which illustrated the situation where the dwelling unit in which the earthquake-proof reinforcement method of this invention was implemented in said apartment house building further increased. It is a conceptual perspective view which illustrated the situation where the earthquake-proof reinforcement method of the present invention was carried out to the dwelling unit of the apartment house building. It is a perspective view explaining the embodiment which connects a seismic reinforcement member with a mechanical joint. It is the fragmentary sectional view which showed the structure which connected the earthquake-proof reinforcement member with the mechanical coupling, and adhere | attached the facing slab etc. It is a cross-sectional view of the dwelling unit where the seismic reinforcement method of the present invention was implemented. It is a longitudinal cross-sectional view of the dwelling unit where the earthquake-proof reinforcement method of this invention was implemented.

Explanation of symbols

1 apartment building 2 dwelling unit 20 dwelling unit (implementing dwelling unit) in which the seismic reinforcement method of the present invention was implemented
3 Seismic reinforcement frame
4 Seismic reinforcement member 5 Joint 6 Adhesive

Claims (2)

A seismic reinforcement method for apartment buildings,
Assembling a rectangular frame-shaped seismic reinforcement frame by connecting a wide plate-shaped seismic reinforcement member inscribed in the upper surface of the floor slab in the dwelling unit and the inner surface of the side wall and the lower surface of the upper floor slab, and the back surface of the seismic reinforcement member The assembly is characterized in that a plurality of seismic reinforcing frame bodies are assembled at intervals in the dwelling unit by repeating the process of bonding and fixing to the floor slab upper surface, the side wall inner surface and the lower surface of the upper floor slab facing each other. Seismic reinforcement method for residential buildings.   A seismic reinforcement method for an apartment building, wherein the seismic reinforcement frame method according to claim 1 is applied to a plurality of dwelling units in an apartment building.

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