JP6444773B2 - Building group and building group construction method - Google Patents

Description

  The present invention relates to a building group and a building group construction method.

Buildings that are long in one direction are provided with an expansion section as a separate building for each predetermined length so that the buildings do not come into contact with each other due to external forces or the like. A general expansion unit prevents the buildings from contacting each other by arranging the outer wall of one building and the outer wall of the other building to face each other with a minimum distance.
The distance between the outer walls in the expansion portion is determined in consideration of securing the work space for constructing each outer wall, site area, and the like in addition to securing the function as the expansion portion. For this reason, for example, when there is no room in the site, measures are taken such as shortening the dimension in the length direction of the building to secure a work space.
When a work space cannot be secured between opposed outer walls, a technique is disclosed in which an outer wall is assembled from the inside of a building and then attached from the inside (for example, Patent Document 1).

  Patent Document 1 describes a configuration in which a plurality of dwelling units are arranged continuously in a tenement style, and the outer walls of adjacent dwelling units are constructed separately and independently for each dwelling unit. At this time, the outer wall in contact with the adjacent dwelling unit is constructed by assembling a shaft assembly in the room of each dwelling unit, attaching an exterior material (precast version) to the shaft assembly, and then manually building the wall body on the base or beam.

JP 2007-32494 A

  However, in Patent Document 1, since all of the opposed outer walls are made of precast walls, the opposed outer walls cannot function as earthquake-resistant walls.

  In view of the above-described facts, an object of the present invention is to provide a building group and a building group construction method that can use an opposing outer wall as a seismic wall.

  The building group according to the first aspect of the present invention is a building group in which the first outer wall of the first building and the second outer wall of the second building are arranged to face each other, and the first outer wall has 2 in the lateral direction. One is constructed with a first concrete wall made of cast-in-place concrete, the other is constructed with a first precast wall made of precast, and the second outer wall is divided into two in the lateral direction. The side facing the first concrete wall is constructed with the second precast wall made of precast, and the side facing the first precast wall is constructed with the second concrete wall made of cast-in-place concrete. Yes.

According to invention of Claim 1, the 1st outer wall of the 1st building and the 2nd outer wall of the 2nd building which were opposingly arranged are each divided into two by the horizontal direction, and one is made of cast-in-place concrete It is constructed with a wall and the other is constructed with a precast wall.
At this time, the first concrete wall made of cast-in-place concrete built on the first outer wall and the second precast wall made of precast built on the second outer wall face each other, and the cast-in-place built on the second outer wall. The second concrete wall body made of concrete and the first precast wall body made of precast constructed on the first outer wall are configured to face each other.

  Thereby, by giving priority to the construction of the first concrete wall body of the first outer wall over the construction of the second precast wall body of the second outer wall, the outside of the first outer wall (between the first outer wall and the second outer wall). Since the work space necessary for constructing the first concrete wall can be secured, the first concrete wall can be constructed from the outside of the first outer wall.

  Similarly, the construction of the second concrete wall body of the second outer wall is given priority over the construction of the first precast wall body of the first outer wall, so that the outside of the second outer wall (between the first outer wall and the second outer wall). Since the work space necessary for constructing the second concrete wall can be secured, the second concrete wall can be constructed from the outside of the second outer wall.

  Subsequently, a precast first precast wall body is attached to the first outer wall of the first building from the inside. Since the 1st precast wall body should just be attached from the inside to the location where the 1st concrete wall body is not built, even if work space cannot be secured outside the 1st outer wall, the 1st precast wall body, It can be attached to the first outer wall.

  Similarly, a precast second precast wall body is attached to the second outer wall of the second building from the inside. Since the second precast wall body may be attached from the inside to a place where the second concrete wall body is not constructed, the second precast wall body can be attached to the second precast wall body even if the work space cannot be secured outside the second outer wall. 2 Can be attached to the outer wall.

  As a result, the first concrete wall body of the first outer wall and the second concrete wall body of the second outer wall can function as earthquake-resistant walls. Moreover, the usage-amount of the 1st precast wall body and 2nd precast wall body attached to a 1st outer wall and a 2nd outer wall can be reduced rather than the case where it attaches to the whole surface of a 1st outer wall and a 2nd outer wall.

  According to a second aspect of the present invention, in the building group according to the first aspect, a distance between the first outer wall and the second outer wall is a minimum distance at which the first outer wall and the second outer wall do not contact at the time of an earthquake. ing.

  Thereby, the contact of the 1st building and the 2nd building at the time of an earthquake is prevented. In addition, the site can be used effectively.

  The outer wall construction method according to the invention described in claim 3 is a building group construction method in which the first outer wall of the first building and the second outer wall of the second building are arranged to face each other. A step of constructing one of the two divided in the lateral direction with a first concrete wall made of cast-in-place concrete, and the one of the second outer wall divided into two in the lateral direction, A step of constructing a second concrete wall body made of cast-in-place concrete on the side facing the other of the outer wall divided in the lateral direction, and the other of the first outer wall divided in two in the lateral direction, A step of constructing with a precast first precast wall, and a step of constructing the other of the second outer wall divided into two laterally with a precast second precast wall. Yes.

According to invention of Claim 3, the 1st outer wall of the 1st building and the 2nd outer wall of a 2nd building which are opposingly arranged are constructed | assembled through the following procedures.
First, one side of the first outer wall divided into two in the lateral direction is constructed with a first concrete wall body made of on-site concrete. Similarly, one side of the second outer wall that is divided into two in the lateral direction and the side opposite to the other side of the first outer wall that is divided in the horizontal direction is constructed with a second concrete wall made of cast-in-place concrete. To do.
Subsequently, the other one of the first outer walls divided in two in the lateral direction is constructed with a precast first precast wall body. Similarly, the other side of the second outer wall that is divided into two in the lateral direction is constructed with a precast second precast wall.

  Thereby, the 1st concrete wall body of the 1st outer wall and the 2nd concrete wall body of the 2nd outer wall can be functioned as an earthquake-resistant wall. Moreover, the usage-amount of the 1st precast wall body and 2nd precast wall body attached to a 1st outer wall and a 2nd outer wall can be reduced rather than the case where it attaches to the whole surface of a 1st outer wall and a 2nd outer wall.

  Since this invention is set as the said structure, it can provide the building group and the building group construction method which reduced the usage-amount of the wall body made from precast used for the outer wall arrange | positioned facing.

(A) is a top view which shows the basic composition of the building group which concerns on embodiment of this invention, (B) is the top view which expanded the P section of (A). (A) is the X1-X1 line view of FIG. 1 (B), (B) is the X2-X2 sectional view taken on the line of FIG. 1 (B).

  The building group 10 which concerns on embodiment of this invention is demonstrated using FIG. 1 (A)-FIG. 2 (B). Here, FIG. 1A shows a plan view of the building group 10, and FIG. 1B shows a plan view in which the point P in FIG. 1A is enlarged. 2A shows a view taken along line X1-X1 in FIG. 1B, and FIG. 2B shows a cross-sectional view taken along line X2-X2 in FIG.

  As shown in FIG. 1A, the building group 10 includes a building (first building) 12 and a building (second building) 14. The building 12 and the building 14 are constructed on the same line so that their longitudinal directions coincide with the X-axis direction. In FIGS. 1A and 1B, only the main housing portions of the building 12 and the building 14 are illustrated, and the slab and the like are omitted.

Each of the building 12 and the building 14 is, for example, a building for an apartment house, and a plurality of indoor spaces 54 and 56 are provided in the X-axis direction. The building 12 has two parallel outer walls 30 and 32 constructed in the X-axis direction. A plurality of partition walls 58 are constructed between the outer walls 30 and 32 so as to intersect the outer walls 30 and 32 in the Y-axis direction. A plurality of indoor spaces 54 partitioned by the outer walls 30 and 32 and the partition wall 58 are respectively dwelling units.
A partition wall at one end (the end on the building 14 side) in the X-axis direction of the building 12 is an outer wall (first outer wall) 20, and a partition wall at the other end is an outer wall 34.

The outer wall 30 and the outer wall 32 of the building 12 are constructed of precast, for example, lightweight aerated concrete (ALC) walls, and the outer wall 34 and the partition wall 58 are both constructed of reinforced concrete on site construction. In addition, you may construct | assemble the outer wall 30 and the outer wall 32 of the building 12 with the reinforced concrete of a site construction.
On the other hand, as will be described later, a part of the outer wall 20 is constructed of reinforced concrete on-site construction, and the rest is a lightweight cellular concrete wall.

The building 14 has two parallel outer walls 36 and 38 constructed in the X-axis direction. A plurality of partition walls 60 are constructed in the Y-axis direction between the outer walls 36 and 38 so as to intersect with the outer walls 36 and 38. A plurality of indoor spaces 56 partitioned by the outer walls 36 and 38 and the partition wall 60 are dwelling units.
A partition wall at one end (end on the building 12 side) in the X-axis direction of the building 14 is an outer wall (second outer wall) 26, and a partition wall at the other end is an outer wall 40.

The outer wall 36 and the outer wall 38 of the building 14 are constructed of, for example, lightweight cellular concrete (ALC) walls made of precast, and the outer wall 40 and the partition wall 60 are both constructed of reinforced concrete constructed in the field. In addition, you may construct | assemble the outer wall 36 and the outer wall 38 of the building 14 by the reinforced concrete of a site construction.
On the other hand, as will be described later, a part of the outer wall 26 is constructed of reinforced concrete constructed on site, and the rest is a lightweight cellular concrete wall.

  Building group 10 is constructed with L in the total length in the X-axis direction. An expansion section 28 is provided between the outer wall 20 of the building 12 and the outer wall 26 of the building 14 with a gap of a distance D. The gap of the distance D absorbs deformation of the building group 10 during an earthquake or the like, or deformation due to thermal expansion or the like. The distance D is determined so that the deformation of the building 12 and the building 14 during an earthquake or the like is obtained by calculation and is not in contact with the earthquake. In the present embodiment, the distance D is set to 500 mm, which is the minimum dimension at which the outer wall 20 and the outer wall 26 do not contact each other.

The expansion portion 28 with the distance D is also important as a work space for constructing the outer wall 20 of the building 12 and the outer wall 26 of the building 14 that are opposed to each other.
For example, when there is no room on the site where the building group 10 is built, the distance D is as small as possible. However, if the distance D is too small, a work space cannot be secured.

  If the work space cannot be secured, the outer wall 20 cannot construct a reinforced concrete wall body in the field construction in the same manner as the other outer wall 30, outer wall 32, outer wall 34 and partition wall 58 of the building 12. Similarly, the outer wall 26 cannot construct a reinforced concrete wall body in the field construction in the same manner as the other outer wall 36, the outer wall 38, the outer wall 40, and the partition wall 60 of the building 14.

Even if the distance D is small and a reinforced concrete wall cannot be constructed by construction on site, construction may be possible if the entire outer wall 20 and outer wall 26 are constructed of precast walls. However, many precast walls are required, and the construction cost increases.
The present embodiment solves this problem by adopting the following configuration.

  As shown in FIG. 2A, the outer wall 20 is divided into two in the lateral direction by a central column (intermediate column) 44. One of the outer walls 20 is constructed of a cast-in-place concrete wall body (first concrete wall body) 16 sandwiched between pillars 42 and 44, and the other is a precast lightweight body sandwiched between pillars 44 and 46. It is constructed with a cellular concrete wall (first precast wall) 18. Further, beams 62 are provided between the pillars 42 and 44 and between the pillars 44 and 46 to partition each floor. The outer wall 20 is constructed with the same configuration in the height direction even if the building 12 has a multi-story structure.

  As shown in FIG. 2B, the outer wall 26 is divided into two in the lateral direction by a column (intermediate intermediary column) 50 at the center. One of the outer walls 26 (the side facing the wall body 16) is constructed of a precast lightweight cellular concrete wall (second precast wall) 24 sandwiched between the pillar 48 and the pillar 50, and the other (the wall 18 and The opposite side) is constructed with a wall body (second concrete wall body) 22 made of cast-in-place concrete sandwiched between the pillar 50 and the pillar 52. Further, between the pillars 48 and 50 and between the pillars 50 and 52, beams 64 are provided for partitioning each floor. The outer wall 20 is constructed with the same configuration in the height direction even if the building 14 has a multi-story structure.

According to this configuration, the outer wall 20 of the building 12 and the outer wall 26 of the building 14 that are arranged to face each other are partitioned in the horizontal direction.
At this time, the wall 16 made of the cast-in-place concrete of the outer wall 20 and the precast-made wall 24 of the outer wall 26 face each other, and the wall 22 made of the cast-in-place concrete of the outer wall 26 and the precast-made of the outer wall 20 are made of precast. The wall body 18 is configured to face each other.

  Thereby, by giving priority to the construction of the wall body 16 by the cast-in-place concrete of the outer wall 20 to the construction of the wall body 24 of the outer wall 26, on the outer side of the outer wall 20 (expansion portion 28 between the outer wall 20 and the outer wall 26), A work space necessary for constructing the wall body 16 can be secured. That is, the wall body 16 can be constructed by utilizing the construction space of the opposite wall body 24 that has not been constructed.

  Similarly, the construction of the wall body 22 made of cast-in-place concrete of the outer wall 26 is prioritized over the construction of the wall body 18 of the outer wall 20, so that the outer side of the outer wall 26 (the expansion portion 28 between the outer wall 20 and the outer wall 26) A work space necessary for constructing the wall body 22 can be secured. That is, the wall body 22 can be constructed using the construction space of the opposite unconstructed wall body 18.

  A construction method of the outer wall 20 and the outer wall 26 will be described with reference to FIGS.

First, as shown to FIG. 2 (A), one wall body 16 of the building 12 divided in the horizontal direction of the outer wall 20 is constructed with cast-in-place concrete. That is, the wall body 16 between the pillar 42 and the pillar 44 is constructed with cast-in-place concrete.
At this time, even if the expansion portion 28 between the outer wall 20 and the outer wall 26 has insufficient work space necessary for constructing the wall body 16 with the cast-in-place concrete, the construction of the opposite unconstructed wall body 24 is performed. The wall body 16 can be constructed by using the space.
That is, the wall body 16 can be constructed by using the space obtained by adding up the expansion unit 28 and the indoor space 56 of the building 14.

Next, the wall body 22 on one side (the side facing the wall body 18 of the outer wall 20) partitioned in the lateral direction of the outer wall 26 of the building 14 is constructed with cast-in-place concrete. That is, the wall body 22 between the pillar 50 and the pillar 52 is constructed with cast-in-place concrete.
At this time, even if the expansion portion 28 between the outer wall 20 and the outer wall 26 has insufficient work space necessary for constructing the wall body 22 with the cast-in-place concrete, the construction of the opposite unconstructed wall body 18 is performed. The wall 22 can be constructed by using the space.
That is, the wall body 16 can be constructed by using the space obtained by adding up the expansion unit 28 and the indoor space 54 of the building 12.

Next, the other side of the outer wall 20 that is partitioned in the lateral direction is constructed with a precast lightweight cellular concrete wall 18. That is, the wall body 18 between the pillar 44 and the pillar 46 is constructed by the precast wall body 18.
At this time, the wall body 18 is attached to the housing member of the building 12 from the inside of the building 12, and the contact portion between the housing member and the wall body 18 is covered with a sealing material from the outside of the building 14. By doing so, the wall body 18 can be attached to the outer wall 20 from the inside of the building 12.

Finally, the other side of the outer wall 26 that is partitioned in the lateral direction is constructed with a precast lightweight cellular concrete wall body 24. That is, the wall body 24 between the pillar 48 and the pillar 50 is constructed by the precast wall body 24.
At this time, the wall body 24 is attached to the housing member of the building 14 from the inside of the building 14, and the contact portion between the housing member and the wall body 24 is covered with a sealing material from the side of the building 14. With the configuration, the wall body 24 can be attached to the outer wall 26 from the inside of the building 14.

  As described above, according to the building group construction method, the lightweight cellular concrete wall 18 is provided on either side of the outer wall 20 of the building 12 that is partitioned in the lateral direction, and the lightweight cellular concrete wall. 24 is provided on either side of the outer wall 26 of the building 14 that is disposed opposite to the building 12 in the lateral direction.

As a result, the wall body 16 of the outer wall 20 and the wall body 22 of the outer wall 26 can function as earthquake-resistant walls. Further, the amount of the lightweight cellular concrete wall used in the wall 18 and the wall 24 is reduced compared to the case where the lightweight cellular concrete wall is provided on the entire outer wall 20 and outer wall 26, thereby reducing the construction cost. Can do.
Further, the distance D between the outer wall 20 and the outer wall 26 in the expansion portion 28 can be made smaller than the case where the outer wall 20 and the outer wall 26 are constructed with on-site concrete using the space between the outer wall 20 and the outer wall 26. Thereby, the full length L of the building group 10 can be shortened, without reducing the number of indoor space 54,56.

  The precast wall bodies 18 and 24 have been described by taking as an example the case of using lightweight cellular concrete (ALC). However, the present invention is not limited to this, and a concrete dry wall (for example, spun cleat or block) may be used.

10 buildings 12 buildings (1st building)
14 Building (Second Building)
16 Wall (1st concrete wall)
18 Wall (1st precast wall, lightweight cellular concrete)
20 outer wall (first outer wall)
22 Wall (2nd concrete wall)
24 wall (second precast wall, lightweight cellular concrete)
26 outer wall (second outer wall)
28 Expansion section

Claims (3)

A group of buildings in which the first outer wall of the first building and the second outer wall of the second building are arranged to face each other,
The first outer wall is divided into two in the lateral direction, one is constructed with a first concrete wall made of cast-in-place concrete, and the other is constructed with a first precast wall made of precast,
The second outer wall is divided into two in the lateral direction, the side facing the first concrete wall is constructed of the precast second precast wall, and the side facing the first precast wall is the site A group of buildings constructed from second concrete walls made of cast concrete.   2. The building group according to claim 1, wherein a distance between the first outer wall and the second outer wall is a minimum distance at which the first outer wall and the second outer wall do not contact at the time of an earthquake. A building group construction method in which a first outer wall of a first building and a second outer wall of a second building are arranged to face each other.
Constructing one of the first outer walls divided into two in the lateral direction with a first concrete wall made of cast-in-place concrete;
The side of the second outer wall that is divided into two in the lateral direction and that faces the other of the first outer wall that is divided in the lateral direction is constructed with a second concrete wall made of cast-in-place concrete. Process,
Constructing the other one of the first outer walls divided into two in the lateral direction with a first precast wall body made of precast;
Constructing the other side of the second outer wall, which is divided into two in the lateral direction, with a precast second precast wall,
Building group construction method having

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