JP2014129693A - Building, building construction method, and building base-isolation renovation method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure freedom of floor planning of a building, although the building includes two building sections continuing via an expansion joint without being generally provided with a base isolation layer.SOLUTION: The building includes: two building sections 1 and 2 continuing via an expansion joint without being generally provided with a base isolation layer; a reinforcement connection portion 3 for rigidly and integrally connecting the two building sections 1 and 2 together; and a base isolation layer 4 which is provided in lower layer portions of the two building sections 1 and 2 integrated by the reinforcement connection portion 3 and which achieves base isolation.

Description

  The present invention generally includes a building having two building parts that are continued through an expansion joint without providing a seismic isolation layer, a building construction method for the building, a building seismic isolation repair method for the building, and the like. Concerning building technology.

  Conventionally, as this type of building technology, when building parts with different natural periods are adjacent to each other, the behavior of the two building parts is usually formed by interposing an expansion joint. 4. As shown in FIG. 4, two building parts 1 and 2 having different foundations are arranged adjacent to each other so that the planar arrangement is substantially L-shaped, and adjacent ends of these two building parts 1 and 2 In some cases, an expansion joint J is provided (for example, see Patent Document 1).

Japanese Patent No. 3463847 (FIGS. 1, 2, and 4)

According to the conventional building technology described above, for example, when one building part and the other building part show different behavior due to the occurrence of an earthquake or the like, the part where the expansion joint is installed is By following displacement (or deformation) following the different behaviors, it is possible to cope with both deviations.
Accordingly, since the expansion joint portion is displaced (or deformed) between the two building portions, it cannot be used as a room, and is generally limited to a connection passage or the like.
That is, there is a problem in that the portion extending over the two building parts has a restriction on the floor plan of the building, and the flexibility in the floor plan of the building is low.

  Therefore, the object of the present invention is to solve the above-mentioned problems, and to ensure freedom in building plan planning, while usually including two building parts that are connected via an expansion joint without providing a seismic isolation layer. It is in the place of providing building technology for building that can be done.

  The first characteristic configuration of the present invention usually includes two building parts that are connected via an expansion joint without providing a seismic isolation layer, and a reinforcing connecting part that rigidly connects the two building parts together is provided. The base layer of the two building parts integrated by the reinforcing connecting part is provided with a base isolation layer to make the base isolation.

According to the first characteristic configuration of the present invention, since the reinforcing connecting part that rigidly connects the two building parts integrally is provided, the two building parts are integrated into the rigidly connected state by the reinforcing connecting part. As in the prior art, it is not necessary to provide an expansion joint between the two building parts.
As a result, the part spanning the two building parts can also be used as a free plan as in the other parts, and the freedom in building plan planning can be improved.
Moreover, since the said reinforcement connection part is a part which connects two building parts, when external forces, such as an earthquake, act on a building part, the external force may act on a reinforcement connection part intensively, for example. Originally, an extremely large amount of reinforcement is required. However, the seismic isolation layer is provided at the lower part of the two building parts, so that the energy of external forces such as earthquakes transmitted to the building part can be reduced, and reinforcement at the reinforcement connecting part The amount can be reduced.
That is, in addition to integrally connecting two building parts with a reinforcing connecting part, as a synergistic effect of isolating these two building parts with a seismic isolation layer, the expansion joint that is usually provided is omitted. The improvement of the economy by the improvement of the economy by the improvement of the freedom in the plan of the building, the improvement of the plan of the building, and the reduction of the reinforcement amount of the reinforcement connecting part comes to be realized.

  According to a second characteristic configuration of the present invention, the floor of the building portion is a precast slab or a synthetic floor slab, and the floor of the reinforcing connecting portion is a floor slab.

According to the second characteristic configuration of the present invention, the floor of the building portion is a precast plate or a synthetic floor slab, so that building construction can be carried out more efficiently than on-site floor slabs.
Moreover, the reinforcement connection part can secure a sufficient amount of reinforcing bars in the reinforcement connection part by using a floor slab on the spot, and the connection strength between the two building parts can be enhanced.
That is, it is possible to efficiently construct a building having high earthquake resistance.

The third characteristic configuration of the present invention is a building construction method for constructing a building having two building parts that are normally connected via an expansion joint without providing a seismic isolation layer,
A base isolation layer is formed, and the two building portions are formed on the base isolation layer, and a reinforcing connecting portion is provided over the two building portions to rigidly connect the two building portions together. It is in the place of building a base-isolated building.

According to the third characteristic configuration of the present invention, a seismic isolation layer is formed, and the two building parts are formed on the seismic isolation layer, and a reinforcing connecting part is provided over the two building parts, Since the two building parts are rigidly connected together, the two building parts are integrated into a rigid connection state by the reinforcing connection part, and an expansion joint is not provided between the two building parts as in the prior art. It will be better.
As a result, the part spanning the two building parts can also be used as a free plan as in the other parts, and the freedom in building plan planning can be improved.
Moreover, since the said two building parts are formed on a seismic isolation layer, the energy of external forces, such as an earthquake transmitted to a building part, can be reduced. In particular, external force tends to concentrate on the reinforcing connecting portion that connects two building portions, but the amount of reinforcement at the reinforcing connecting portion can be reduced by reducing the external force.

  According to a fourth characteristic configuration of the present invention, the floor of the building portion is a precast plate or a synthetic floor slab, and the floor of the reinforcing connecting portion is a floor slab.

According to the 4th characteristic structure of this invention, the floor of a building part can implement a building construction efficiently compared with the floor slab made from a spot by using a precast slab or a synthetic floor slab.
Moreover, the reinforcement connection part can secure a sufficient amount of reinforcing bars in the reinforcement connection part by using a floor slab on the spot, and the connection strength between the two building parts can be enhanced.
That is, it is possible to efficiently construct a building having high earthquake resistance.

A fifth characteristic configuration of the present invention is a building seismic isolation repair method for seismically isolating a building having two building parts that are continuous via an expansion joint,
Form a seismic isolation layer in the lower layer of the two building parts, remove the expansion joint, and provide a reinforcing connection part over the two building parts to rigidly connect the two building parts together. is there.

According to a fifth characteristic configuration of the present invention, a seismic isolation layer is formed in a lower layer portion of the two building portions, the expansion joint is removed, and a reinforcing connecting portion is provided over the two building portions to provide the two Since the two building parts are rigidly connected together, it is possible to carry out the seismic isolation of the building and the repair of the part that spans the two building parts.
As a result, the expansion joint disappears from the part that spans the two building parts, and the reinforcing connecting part strongly connects the two building parts, resulting in displacement due to displacement (or deformation) of the two building parts. Since it becomes difficult, for example, it is possible to plan a plane as a free use, as in the case of other parts such as providing a living room.
Therefore, the freedom in building plan planning can be improved.

Top view of apartment house Apartment house development Detailed plan view of the reinforcement connection Plan view and developed view of conventional apartment house Exploded view showing seismic isolation repair method for apartment houses of the second embodiment Building plan of another embodiment Building plan of another embodiment

  Embodiments of the present invention will be described below with reference to the drawings. In the drawings, the parts indicated by the same reference numerals as those in the conventional example indicate the same or corresponding parts.

[First Embodiment]
1 and 2 show a housing complex B1 which is an embodiment of a building B of the present invention.
The apartment house B1 is made of reinforced concrete, has a plurality of levels, and has two building parts 1 and 2 provided in a cross shape (for example, orthogonal) so that the planar shape is substantially L-shaped, and the two buildings. And a reinforcing connecting portion 3 for rigidly connecting the portions 1 and 2 together.
In addition, the two building parts 1 and 2 and the reinforcement connecting part 3 are erected on the foundation part 5 via the seismic isolation layer 4.

The foundation part 5 has a foundation type determined in accordance with the situation of the supporting ground, and is not shown in the figure, but, for example, a foundation pile, a foundation slab, a foundation beam, or the like is provided.
The seismic isolation layer 4 is integrally formed with a plurality of seismic isolation devices 4 </ b> A installed at positions below the pillars and the like in the building parts 1, 2 and the reinforcing connection part 3, and rising from the outer periphery of the foundation part 5. It is comprised as a seismic isolation pit provided with the outer peripheral wall 4B. The outer peripheral wall 4 </ b> B is formed on the outer peripheral side of the building parts 1, 2 and the reinforcing connection part 3 in anticipation of clearance that allows the building parts 1, 2 and the reinforcing connection part 3 to be displaced along with the lateral deformation of the seismic isolation layer 4. It is formed in the position.

As shown in FIG. 1, the seismic isolation device 4A is provided with a rectangular metal upper panel 4Aa and a rectangular metal lower panel 4Ab, and an elastic layer made of rubber or the like and a steel plate or the like between the panels. Laminated rubber 4Ac, which is formed in a cylindrical shape by laminating a number of rigid layers alternately, is integrally provided. The elastic layer is deformed by the relative displacement of the rigid layers in the horizontal direction. The vibration period of the building can be lengthened.
The upper panel 4Aa is fixedly attached to the building parts 1 and 2, while the lower panel 4Ab is fixedly attached to the base part 5.

As shown in FIG. 1, the building parts 1 and 2 are configured as long and narrow rectangular shapes, and a plurality of columns 6 are erected at intervals along the longitudinal direction. 7 is provided. Further, a portion surrounded by the adjacent pillars 6 is assigned as each dwelling unit 8. Further, the dwelling unit 8 is also assigned to the reinforcing connecting part 3 located between the building parts 1 and 2.
Although not shown in the figure, a staircase and an elevator are also provided.

The walls separating the dwelling units 8 are each provided with a reinforced concrete door boundary earthquake resistant wall 9. In other words, the boundary earthquake-resistant wall 9 is arranged in parallel along the width direction of the building parts 1 and 2.
Therefore, the building parts 1 and 2 have a ramen structure composed of columns 6 and beams 7 in the longitudinal direction, and a plurality of boundary earthquake-resistant walls 9 are provided in the longitudinal direction at intervals in the longitudinal direction. There is a stable structure in any direction on the building plane due to the combined effect of the ramen structure and the seismic wall 9 of the doorway.

In the vertical direction of the building parts 1 and 2, the upper and lower layers are separated by a slab 10 provided in a state extending over each column 6 and beam 7.
Moreover, the balcony 11 and the hallway 12 are provided in the state surrounding the outer periphery of the building parts 1 and 2 and the reinforcement connection part 3. FIG.

As shown in FIG. 3, the reinforcing connecting portion 3 is provided in an area straddling the end portions of the building portions 1 and 2. Specifically, at the end portions of the building portions 1 and 2, each beam 7 By arranging the reinforcing reinforcing bars 13 over the slab 10 and integrating them with concrete, a zone having higher strength and rigidity than the other building parts 1 and 2 is formed.
The reinforcing reinforcing bars 13 include a reinforcing reinforcing bar 13A installed along the beam 7 and a reinforcing reinforcing bar 13B embedded in the slab 10, and the respective installation positions are as shown in the figure.
Incidentally, the slab 10 is a composite floor slab using a unit of precast concrete board 10A (for example, trade name: spun cleat) in the building parts 1 and 2, and a unit of the void slab 10B is used in the reinforcing connecting part 3. This is a slab that was built on the spot.
By using the void slab 10B, it becomes possible to easily arrange the reinforcing reinforcing bars 13B in the concrete placement space of the upper half cross section, and the reinforcement connecting portion 3 can be formed efficiently.
In addition, the slab 10 of the building parts 1 and 2 is formed integrally by adding concrete to the top of the unit (synthetic floor slab), or is composed of only a unit (precast version). It may be. Further, the slab 10 of the reinforcing connecting portion 3 is configured by placing the cast-in-place concrete on the unit as described above, or by simply placing the cast-in-place concrete with a formwork. May be.

Next, the construction method of the apartment house B1 will be described.
[1] The base portion 5 is formed and the seismic isolation layer 4 is formed thereon. The seismic isolation layer 4 is formed by installing the seismic isolation device 4 </ b> A at a plurality of setting locations (column positions, etc.) on the base portion 5 while standing the outer peripheral wall 4 </ b> B on the outer edge of the base portion 5. .
[2] On the seismic isolation layer 4, the two building parts 1 and 2 and the reinforcing connecting part 3 extending therebetween are provided, and the two building parts 1 and 2 are rigidly integrally connected.
The apartment house B1 can be constructed by the above procedure.

According to the building technology of the present embodiment, the two building parts 1 and 2 are integrated into a rigid connection state by the reinforcing connection part 3. There is no need to provide an expansion joint.
Therefore, the part of the reinforcement connecting part 3 can be used as the dwelling unit 8 like the other parts, and the freedom in building plan planning can be improved.
In addition, the seismic isolation layer 4 is provided in the lower layer of the two building parts 1 and 2 to achieve seismic isolation so that the energy of external forces such as earthquakes transmitted to the building parts 1 and 2 can be reduced. In addition, the amount of reinforcement at the reinforcing connecting portion 3 can be reduced, and the economic efficiency in building construction can be improved.

[Second Embodiment]
In the previous embodiment, the construction of the newly constructed apartment house B1 has been described. Hereinafter, a seismic isolation repair method for the existing building B2 will be described.
Incidentally, the building B which is an object of the present invention is not limited to a housing complex, and may be a building for other purposes.

  As shown in FIG. 4, in the existing building B2, the two building parts 1 and 2 are formed so as to be able to individually roll, and while allowing the individual shaking, In order to cover the clearance between the two building parts 1 and 2, an expansion joint J provided with movable hardware is provided at the connecting part of the two building parts 1 and 2.

[1] As shown in FIG. 5, the seismic isolation layer 4 is formed in the lower layer of the two building parts 1 and 2. In this process, the basement part is widened to form the outer peripheral wall 4B, and the seismic isolation devices 4A are installed on the upper and lower parts of the pillars in the basement part.
[2] The expansion joint J is removed.
[3] Renovate the connection target part between the two building parts 1 and 2 to the reinforcing connection part 3. In this process, a part of the beam 7 and the slab 10 of the building parts 1 and 2 are demolished, and the reinforcing reinforcing bars 13 are disposed and the concrete is placed, so that the reinforcing connecting part 3 having higher strength and rigidity can be obtained. can do.

  According to the building technology of the present embodiment, it is possible to reduce the external force due to the seismic isolation of the building B2, and to improve the proof stress by rigidly connecting the two building parts 1 and 2 by the reinforcing connecting part 3. And since expansion joint J disappears, it becomes possible to provide a residence and a room also in the reinforcement connection part 3, and can aim at the improvement in the freedom in a building plane plan.

[Another embodiment]
Other embodiments will be described below.

<1> The building B is not limited to the apartment house B1 described in the previous embodiment. For example, buildings of all uses such as hotels, hospitals, and schools are targeted.
Further, the shapes and structures of the building parts 1 and 2 are not limited to those described in the previous embodiment.
For example, in the previous embodiment, the two building parts 1 and 2 have been described as being orthogonal to each other. However, the present invention is not limited to this configuration. For example, as shown in FIG. It may be an obtuse angle or an acute angle as shown in FIG.
<2> In the previous embodiment, the reinforcing connecting portion 3 has been described as being reinforced by providing the reinforcing reinforcing bars 13, but is not limited to reinforcing reinforcing bars, for example, a steel member or fiber A reinforcing member, a high-strength coating member, or the like may be used alone or in combination.

  In addition, as mentioned above, although the code | symbol was written in order to make contrast with drawing convenient, this invention is not limited to the structure of an accompanying drawing by this entry. In addition, it goes without saying that the present invention can be carried out in various modes without departing from the gist of the present invention.

1 Building part 2 Building part 3 Reinforced connection part 4 Seismic isolation layer B Building J Expansion joint

Claims (5)

  Usually, it is provided with two building parts that are connected via an expansion joint without providing a seismic isolation layer, a reinforcing connecting part that rigidly connects the two building parts is provided, and is integrated by the reinforcing connecting part. A building that is seismically isolated by providing a seismic isolation layer in the lower layer of the two buildings.   The building according to claim 1, wherein the floor of the building portion is a precast plate or a synthetic floor slab, and the floor of the reinforcing connecting portion is a floor slab. Usually, a building construction method for constructing a building having two building parts that are continued through an expansion joint without providing a seismic isolation layer,
A base isolation layer is formed, and the two building portions are formed on the base isolation layer, and a reinforcing connecting portion is provided over the two building portions to rigidly connect the two building portions together. A building construction method for building seismic isolation buildings.   The building construction method according to claim 3, wherein the floor of the building portion is a precast plate or a synthetic floor slab, and the floor of the reinforcing connecting portion is a floor slab. A building seismic retrofit method for seismically isolating a building having two building parts connected via an expansion joint,
Forming a seismic isolation layer in the lower layer of the two building parts, removing the expansion joint, and providing a reinforcing connecting part over the two building parts to rigidly connect the two building parts together. Earthquake repair method.

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