JP7585139B2 - Dwelling space unit and method for constructing a building incorporating the dwelling space unit - Google Patents

Description

The present invention relates to a living space unit and a method for constructing a building in which the living space unit is incorporated.

Patent document 1 discloses a low- to mid-rise building constructed from reinforced concrete.

JP 2001-49882 A

In recent years, from the perspective of reducing greenhouse gas emissions, there has been a push to actively use wood, which absorbs and fixes carbon dioxide, as a building material, and for example, to use wood for low- to mid-rise buildings such as those described in Patent Document 1.

On the other hand, even for low- to mid-rise buildings, in order to meet fire resistance requirements, it becomes necessary to construct parts of the floors and walls out of concrete. In other words, when constructing a relatively large building using wood as a building material, the process of pouring concrete and assembling the wood into the concrete must be repeated. However, the wood cannot be assembled until the concrete has cured, and because the wood is attached to the concrete poured on-site, adjustments must be made as needed, which can result in a longer construction period for the building.

The present invention aims to shorten the construction period for buildings in which wood materials are used as building materials.

The present invention is a living space unit that is prefabricated and assembled in multiple units into a building, the living space unit comprising a floor section and a wall section erected on the floor section, the floor section being made of concrete with reinforcing bars arranged inside, the wall section being formed from wooden boards , and a balcony section being integrally provided with the floor section.The present invention is also a living space unit that is prefabricated and assembled in multiple units into a building, the living space unit comprising a floor section and a wall section erected on the floor section, the floor section being made of concrete with reinforcing bars arranged inside, the wall section being formed from wooden boards, and a sheath tube through which a steel wire passes that fastens the living space units arranged horizontally to each other is embedded in the floor section.

The present invention can shorten the construction period for buildings that use wood materials as building materials.

1 is a perspective view of a living space unit according to an embodiment of the present invention. 2 is a cross-sectional view taken along line AA in FIG. 1. 2B is a cross-sectional view taken along line BB in FIG. 2A. 1 is a front view of a building incorporating a living space unit according to an embodiment of the present invention. 4 is a cross-sectional view showing a cross section along line CC in FIG. 3. 5 is a cross-sectional view taken along line DD of FIG. 4. FIG. 7 is a diagram showing a modification of the living space unit according to the embodiment of the present invention, and is a diagram showing a cross section corresponding to FIG. 5 . FIG. 7 is a diagram showing a modified example of a method for constructing a building in which the living space unit according to the embodiment of the present invention is incorporated, and is a diagram showing a cross section corresponding to FIG. 5 . FIG. 5 is a diagram showing another modified example of a method for constructing a building in which a living space unit according to an embodiment of the present invention is incorporated, and is a diagram showing a cross section corresponding to FIG.

The following describes a living space unit according to an embodiment of the present invention and a method for constructing a building in which the living space unit is incorporated, with reference to the drawings.

First, referring to Figures 1 to 3, the living space unit 100 according to this embodiment will be described. The living space unit 100 is a unit body formed in advance in a factory or the like, and a low- to mid-rise building 1 having multiple living spaces is constructed by arranging multiple living space units 100 horizontally and stacking them vertically at the construction site. Figure 1 is a perspective view of the living space unit 100, Figure 2A is a cross-sectional view showing a cross-section of the living space unit 100 along line A-A in Figure 1, Figure 2B is a cross-sectional view showing a cross-section of the living space unit 100 along line B-B in Figure 2A, and Figure 3 is a partial front view partially showing the front of an arbitrary floor of the building 1 incorporating multiple living space units 100.

As shown in Figures 1, 2A and 2B, the living space unit 100 comprises a concrete floor section 10 with reinforcing bars (not shown) arranged inside, and a space forming section 20 that forms a living space on the floor section 10. In the following, as shown in Figure 3, the direction in which the living space units 100 are arranged in the building 1 is referred to as the girder direction, and the direction perpendicular to the girder direction is referred to as the beam direction.

The floor section 10 is a plate-shaped member made of precast concrete manufactured in advance in a factory or the like, and has a connection section 11 for connecting the living space units 100 arranged next to each other in the girder direction, a first extension section 12 that extends from the connection section 11 along the beam direction and serves as a balcony section, and a second extension section 13 that extends across the connection section 11 to the opposite side of the first extension section 12 and is connected to the shared corridor 70 described below.

A sheath tube 15 through which a PC steel wire 50 (steel wire) described below passes is embedded in the connection section 11 along the girder direction to integrate adjacent living space units 100 by tightening them together. At the same time, metal joints such as embedded nuts and embedded bolts (not shown) for connecting each of the wall sections 21, 22, and 23 (described below) that make up the space forming section 20 to the floor section 10 are embedded in preset positions.

Sheath pipes 17, 18 are embedded vertically in the first extension section 12 and the second extension section 13 to connect the wall columns 30, 40 (columns) (described below) that connect the vertically stacked living space units 100 to the floor section 10. In addition, the first extension section 12, which forms the balcony section, is provided with grooves and drainage ducts (not shown) for draining rainwater, etc., and the second extension section 13 is embedded with anchoring bars 16 that extend toward the common corridor 70 that is poured at the construction site.

The space forming section 20 has a first exterior wall 21 (wall section) erected along the girder direction on the first extension section 12 side, a second exterior wall 22 (wall section) erected along the girder direction on the second extension section 13 side, a pair of partition walls 23 (wall sections) erected along the beam direction and connected to the first exterior wall 21 and the second exterior wall 22, and a ceiling section 24 that closes the upper opening formed by the first exterior wall 21, the second exterior wall 22 and the pair of partition walls 23.

The walls 21, 22, 23 and ceiling 24 that make up the space forming section 20 are made of wood boards such as cross laminated timber (CLT) made of B-grade materials such as thinned wood. In addition, to improve fire resistance, fire-resistant covering materials such as ALC panels may be layered on each member.

The walls 21, 22, and 23 are joined to the floor 10 by connecting the lower ends of the walls 21, 22, and 23 to metal joints embedded in the floor 10 using known methods such as LSB (lag screw bolt) joints or DP (drift pin) joints. The walls 21, 22, and 23 are joined to each other and to the ceiling 24 using known methods such as L-shaped metal joints, long screws, and adhesives.

The manufacturing work of the living space unit 100 is carried out in advance in a factory or an assembly yard at a construction site, and a system kitchen, a system bath, water supply and drainage piping, a bed, an air conditioning unit, etc. are further installed inside the living space unit 100. A window 21a or a window frame is provided in the first exterior wall 21 erected on the side of the first extension 12, which is the balcony section, and an opening 22a, which serves as an entrance and exit to the living space, is provided in the second exterior wall 22 erected on the side of the second extension 13 facing the shared corridor 70. An entrance door, etc. may be assembled into the opening 22a in a factory, etc.

The multiple living space units 100 thus assembled in a factory or the like are transported to a construction site, lined up horizontally and stacked vertically. This results in the construction of a low- to mid-rise building 1 with multiple living spaces, as shown in Figure 3.

Next, the building 1 into which the living space unit 100 having the above-mentioned configuration is incorporated will be described with reference to Figures 3 to 5. Figure 4 is a cross-sectional view showing the cross-section of the building 1 along line C-C in Figure 3, and Figure 5 is a cross-sectional view showing the cross-section of the building 1 along line D-D in Figure 4.

As shown in Figures 3 and 4, the building 1 is provided with wall columns 30, 40 that are arranged between the floors 10 of the vertically stacked living space units 100 and bear vertical loads, and casting sections that are cast at the construction site, such as a common corridor 70 and stairs (not shown).

The wall columns 30, 40 are columnar members made of precast concrete that are manufactured in advance in a factory or the like, and are provided on the first extension portion 12 side and the second extension portion 13 side, respectively, so as to straddle two adjacent living space units 100.

As shown in FIG. 4, the first wall column 30 arranged on the first extension section 12 side has a plurality of main bars 31 arranged along the first wall column 30, reinforcing bars (not shown) wrapped around the plurality of main bars 31, a first reinforcing bar joint 32 into which the lower end of the main bars 31 is inserted, and a second reinforcing bar joint 33 into which the upper end of the main bars 31 is inserted.

The reinforcing bar joints 32, 33 are cylindrical mortar-filled joints with open ends, and are embedded in the first wall column 30 so that the end face opposite the side where the main reinforcement 31 is inserted is exposed. Note that the reinforcing bar joints 32, 33 are not limited to mortar-filled joints, and inorganic grout-filled joints, resin grout-filled joints, and welded joints may also be used.

The second wall column 40 arranged on the second extension section 13 side has, like the first wall column 30, multiple main reinforcements 41 arranged along the second wall column 40, reinforcing bars (not shown) wrapped around the multiple main reinforcements 41, a first reinforcing bar joint 42 into which the lower end of the main reinforcement 41 is inserted, and a second reinforcing bar joint 43 into which the upper end of the main reinforcement 41 is inserted.

The wall columns 30, 40 on the upper floor and the wall columns 30, 40 on the lower floor are connected to each other via connecting bars 35, 45 that pass through the sheath tubes 17, 18 provided in the floor section 10, as described below, so that the wall columns 30, 40 connect the floor section 10 of the living space unit 100 on the upper floor to the floor section 10 of the living space unit 100 on the lower floor.

In addition, as shown in FIG. 5, the building 1 is provided with PC steel wires 50 that securely fasten together a number of living space units 100 arranged horizontally.

The PC steel wire 50 is a linear steel material consisting of a single wire or a stranded wire that is inserted through a sheath tube 15 embedded in the connection part 11 of the horizontally arranged living space units 100, and is fixed in place via fixing devices (not shown) installed at both ends in a tensioned state using a known post-tensioning prestress fixing method.

Next, a method for constructing the building 1 into which the living space unit 100 having the above-described configuration is incorporated will be described with reference to Figures 3 to 5. Note that since the construction procedures for each floor of the building 1 are substantially the same, the procedure for constructing an arbitrary floor, the Nth floor, will be described below.

First, a process is carried out to install the Nth floor residential space unit 100 (another residential space unit) above the previously constructed N-1th floor residential space unit 100. The Nth floor residential space unit 100 is transported from the manufacturing factory to the construction site by a transport vehicle such as a truck, and is placed directly on top of the previously constructed N-1th floor residential space unit 100 by using a lifting machine such as a crane.

When placing the Nth floor residential space unit 100 in this manner, in order to ensure the levelness of the residential space unit 100, a metal plate 61 for level adjustment is appropriately placed between the ceiling 24 of the N-1th floor residential space unit 100 and the floor 10 of the Nth floor residential space unit 100. A sealing member 62 is also provided in this area to prevent water and the like from entering from the outside. The sealing member 62 is an elastic member made of resin or the like, and is provided in a compressed state between the ceiling 24 and the floor 10. Note that if the shared corridor 70 is an internal corridor, the sealing member 62 does not need to be provided on the corridor side.

Another residential space unit 100 is sequentially placed next to the residential space unit 100 on the Nth floor, and this process is completed when all the residential space units 100 on the Nth floor are lined up horizontally. Note that when this process is completed, the load of the residential space unit 100 on the Nth floor is supported by the residential space unit 100 on the N-1th floor.

Next, the process of integrating multiple living space units 100 to form N floors is carried out.

In this process, first, mortar is filled into the gaps between the floors 10 of the adjacent residential space units 100. The mortar filled between the floors 10 solidifies, and the multiple residential space units 100 that make up the Nth floor are joined together. When the multiple residential space units 100 arranged horizontally are joined together in this manner, the sheath tubes 15 embedded in the connection parts 11 of each residential space unit 100 are in communication with each other. Note that the gaps between the floors 10 of the adjacent residential space units 100 may be filled with concrete instead of mortar, and when there is almost no gap between the floors 10 and they are almost in contact with each other, an adhesive such as epoxy resin may be applied to the contact surfaces.

Next, in this process, a post-tensioning prestress fixing method, which is a fixing method using PC steel wires 50, is carried out to structurally integrate multiple living space units 100.

In the fixing method for fixing the PC steel wire 50, first, mortar is injected into the connected sheath pipe 15 and the PC steel wire 50 is inserted. Next, one end of the inserted PC steel wire 50 is fixed by a fixing tool, and the other end is pulled by a jack. This applies tension to the PC steel wire 50.

The other end of the tensioned PC steel wire 50 is then fixed by a fastening device in the same manner as the other end, and the multiple living space units 100 on the Nth floor are secured together by the tension (restoring force) generated in the PC steel wire 50, both ends of which are fixed by fastening devices, and are structurally integrated.

After multiple living space units 100 that make up N floors are integrated in this way, the next step is to pour concrete at the construction site.

In this process, the common corridor 70, which is the common floor for the Nth floor, is poured, and structural parts such as the stairs, which are the rising structure from the N-1th floor extending from the common corridor 70 on the N-1th floor toward the common corridor 70 on the Nth floor, are poured. Note that the common corridor 70 and stairs do not all need to be constructed by pouring on-site, and parts may be precast in a factory, etc.

Once the process of pouring the concrete is completed, the process of connecting the floor 10 of the living space unit 100 on the N-1th floor to the floor 10 of the living space unit 100 on the Nth floor with wall columns 30, 40 (columns) is carried out.

In this process, first, the connecting bars 35, 45 are inserted between the sheath pipes 17, 18 installed on the floor 10 of the living space unit 100 on the Nth floor and the second reinforcing bar joints 33, 43 of the wall columns 30, 40 installed on the N-1th floor. Mortar is then filled into the sheath pipes 17, 18 and the second reinforcing bar joints 33, 43 into which the connecting bars 35, 45 have been inserted. Mortar is also filled into the gap between the upper end surfaces of the wall columns 30, 40 and the lower end surface of the floor 10.

When the filled mortar hardens, the floor 10 of the living space unit 100 on the Nth floor and the floor 10 of the living space unit 100 on the N-1th floor are connected via the wall columns 30, 40. In other words, the vertical load of the living space unit 100 on the Nth floor is supported by the wall columns 30, 40 on the N-1th floor, not by the living space unit 100 on the N-1th floor.

By ultimately using the wall columns 30 and 40 to support vertical loads in this way, it becomes possible to form each wall section 21, 22, and 23 of the living space unit 100 from wooden boards such as cross-laminated timber, which have a relatively low load-bearing capacity.

In order to reliably prevent vertical loads from acting on the walls 21, 22, and 23 of the living space unit 100, it is preferable to place a small jack (not shown) between the ceiling 24 and the floor 10 instead of the metal plate 61, and remove the small jack after the wall columns 30 and 40 are joined to the floor 10 so that the ceiling 24 and the floor 10 are not in rigid contact. The space created between the ceiling 24 and the floor 10 by placing the small jack in this way can be used as piping space for water supply and drainage piping, etc.

The above-mentioned process of connecting the floor 10 of the living space unit 100 on the N-1th floor to the floor 10 of the living space unit 100 on the Nth floor with the wall columns 30, 40 may be performed in parallel with the concrete pouring process without waiting for the concrete pouring process to be completed, or may be performed prior to the concrete pouring process.

After the wall columns 30, 40 of the N-1th floor are joined to the floor 10 of the living space unit 100, which will be the Nth floor, the process of installing the wall columns 30, 40 of the Nth floor is carried out using the connecting bars 35, 45 used when joining them.

One end of the connecting bars 35, 45 protrudes upward from the floor 10. The process of installing the wall columns 30, 40 on the Nth floor is performed by inserting one end of the connecting bars 35, 45 protruding from the floor 10 into the first reinforcing bar joints 32, 42 of the wall columns 30, 40, and filling the first reinforcing bar joints 32, 42 into which the connecting bars 35, 45 have been inserted with mortar. Mortar is also filled into the gap between the lower end surface of the wall columns 30, 40 and the upper end surface of the floor 10.

When the filled mortar hardens, the Nth-floor wall columns 30, 40 are erected on the floor 10 of the Nth-floor living space unit 100.

After the wall columns 30, 40 are installed across the adjacent living space units 100 in this manner, the gaps between the wall columns 30, 40 and the living space units 100 and the gaps between the partition walls 23 of the adjacent living space units 100 are filled with fireproof materials (fireproof seals, fireproof gaskets, etc.) as appropriate.

By the above process, an Nth floor, which is any floor of the building 1 into which the living space unit 100 is to be incorporated, is constructed. Then, by repeating the same process, the N+1th floor and subsequent floors are constructed in sequence.

The above embodiment provides the following advantages:

The living space unit 100 has a structure in which the walls 21, 22, 23 made of wooden boards such as cross-laminated timber are erected on a concrete floor 10 with reinforcing bars arranged inside, and is fabricated in advance in a factory or the like. By making the living space unit 100 a structure in which wooden boards are erected on a reinforced concrete floor 10 in advance in a factory or the like, it becomes unnecessary to assemble the wooden boards on-site to the concrete poured at the construction site, and it becomes possible to reduce the parts where concrete must be poured at the construction site, i.e., the parts that require a curing period. As a result, it is possible to shorten the construction period of the building 1 in which wooden materials are used as building materials.

In addition, it will be possible to use a relatively large amount of wood that absorbs and fixes carbon dioxide in low- to mid-rise buildings 1, which will contribute to reducing carbon dioxide emissions. Furthermore, it will be possible to use cross-laminated timber made from thinning materials, B-grade lumber, and lumber scraps as building materials for buildings 1, which will also contribute to the effective use of forest resources.

The following modified examples are also within the scope of the present invention, and it is possible to combine the configurations shown in the modified examples with the configurations described in the above embodiments, or to combine the configurations described in the different modified examples below.

In the above embodiment, the walls 21, 22, and 23 of the living space unit 100 are provided on four sides. The walls 21, 22, and 23 do not have to be provided on four sides as long as they are provided so that the ceiling part 24 can be connected. For example, the walls may be provided on only two perpendicular or two parallel sides in a plan view, or they may be provided on three sides so as to form a U-shape in a plan view. In this case, the walls that are not provided on the living space unit 100 are attached at the construction site, but temporary walls may be provided to protect the equipment installed in the living space unit 100 when it is transported from a factory or the like to the construction site.

In addition, in the above embodiment, the living space unit 100 is provided with a ceiling portion 24. Alternatively, the living space unit 100 may not be provided with a ceiling portion 24, and the underside of the floor portion 10 of the living space unit 100 placed on the upper floor may be used as the ceiling surface. In this case, in order to protect the equipment installed in the living space unit 100, a protective cover is appropriately provided to cover the upper surface when the living space unit 100 is transported from a factory or the like to a construction site.

In the above embodiment, the living space unit 100, including the interior, is assembled in a factory or the like and then transported to the construction site. Alternatively, all or part of the assembly of the living space unit 100 may be performed in an assembly yard within the construction site. Also, the interior construction work may be performed after the living space unit 100 is incorporated into the building 1.

In the above embodiment, the shape of the floor portion 10 of the living space unit 100 is substantially rectangular in plan view. The shape of the floor portion 10 is not limited to this, and may be any shape that allows connection of the sheath tubes 15 provided in adjacent living space units 100. For example, a portion of the floor portion 10 may be cut out or protrude to match the shape of the common corridor 70 or the arrangement of stairs and elevators.

In the above embodiment, the first extension 12 that serves as the balcony section is integrally provided on the floor section 10 of the living space unit 100. Alternatively, the balcony section may be provided separately from the floor section 10. In particular, when the balcony section is provided with a concrete handrail section or when the area of the balcony section is large, there is a risk that the size or weight will exceed the capacity of a transport vehicle such as a truck, so it is preferable to provide a separate configuration.

In the above embodiment, the floor portion 10 of the living space unit 100 is made of reinforced concrete. Alternatively, the floor portion 10 may be made of steel-reinforced concrete.

In the above embodiment, the wall columns 30, 40 are precast. Alternatively, the wall columns 30, 40 may be made of reinforced concrete or steel-reinforced concrete cast on-site. In this case, the wall columns 30, 40 of the Nth floor, which is an arbitrary floor, are cast together as a rising structure when the common corridor 70, which is the common floor of the Nth floor, is cast and when the structural parts such as the stairs, which are the rising structure from the Nth floor extending from the common corridor 70 of the Nth floor to the common corridor 70 of the Nth floor, are cast. In other words, in this case, the process of installing the wall columns 30, 40 of the Nth floor is performed together with the concrete casting process performed when constructing the Nth floor. The wall columns 30, 40 may also be simply steel frames, and in this case, the wall columns 30, 40 of the Nth floor, which is an arbitrary floor, are joined to, for example, metal hardware embedded in the floor portion 10 in advance.

In the above embodiment, the multiple living space units 100 are structurally integrated by a fastening method using PC steel wires 50. Alternatively, as shown in FIG. 6, the living space units 100 on the same floor may be integrated by fastening via reinforcing bars. Note that FIG. 6 is a cross-sectional view showing a cross section equivalent to FIG. 5.

In the modified example shown in FIG. 6, instead of the sheath pipe 15, multiple reinforcing bars 51 are embedded in the connection portion 11 of the floor portion 10 of the living space unit 100 along the girder direction. Both ends of these reinforcing bars 51 protrude as anchoring bars. Then, between the two living space units 100, there is provided a living space 200 that has a floor portion 210 that is poured at the construction site and is assembled at the construction site.

The floor section 210 of the living space 200 is cast on-site after the reinforcing bars 51 protruding from the connection sections 11 of the living space units 100 arranged on both sides are connected to each other by connecting bars 52. After the floor section 210 is cast, the space forming section that forms the living space on the floor section 210 is formed from wooden boards.

In other words, in this modified example, the multiple living space units 100 are integrated by the reinforcing bars 51 embedded in the connection parts 11 and the floor parts 210 of the living space 200 that are assembled between the living space units 100 at the construction site.

When pouring the floor 210 of the living space 200, the ceiling 224 of the living space 200 on the lower floor may be used as a formwork for pouring.

In the above embodiment, adjacent living space units 100 are separated only by the partition walls 23 provided in each of them. Alternatively, to improve soundproofing and fire resistance, a concrete wall 72 may be provided between the partition walls 23 of adjacent living space units 100 as shown in FIG. 7. FIG. 7 is a cross-sectional view showing a cross section corresponding to FIG. 5.

In the modified example shown in FIG. 7, adjacent living space units 100 are placed at a predetermined distance apart, and concrete walls 72, 73 poured on site are provided between the partition walls 23 and the floors 10.

In this case, in the process of integrating multiple living space units 100 on the Nth floor, the sheath pipes 15 installed in adjacent living space units 100 are connected by the connecting pipes 74, and high-strength concrete is poured between the floor sections 10 of the adjacent living space units 100 up to the top surface of the floor sections 10. Note that a slag stopper member 64 is installed in advance between the floor section 10 and the ceiling section 24 of the living space unit 100 on the lower floor to prevent the inflow of high-strength concrete.

Then, after the high-strength concrete has solidified and a relatively strong concrete wall 73 has been formed between the floors 10 of adjacent living space units 100, a post-tensioning prestress fixing method, which is a fixing method using PC steel wires 50, is carried out in the same manner as in the above embodiment. Note that even if the concrete wall 73 is made of ordinary concrete, if it is predicted that the concrete wall 73 will be strong enough to be fixed by the PC steel wires 50, the concrete wall 73 may be made of ordinary concrete instead of high-strength concrete.

After multiple living space units 100 on the Nth floor are structurally integrated, reinforcing bars (not shown) are placed between the partition walls 23 of adjacent living space units 100. Then, similar to the above embodiment, a process of installing wall columns 30, 40 on the Nth floor is performed, and then concrete is poured into the space surrounded by the partition walls 23 and wall columns 30, 40 of adjacent living space units 100 up to the top surface of the ceiling 24. In this way, concrete walls 72, 73 are formed between adjacent living space units 100.

In order to improve the connection between the concrete wall 72 and the wall columns 30, 40, it is preferable to provide each wall column 30, 40 with a U-shaped or hook-shaped anchor bar that protrudes toward the space between the partition walls 23 of adjacent living space units 100.

In the above embodiment, the wall columns 30, 40 are directly joined to the floor 10 of the living space unit 100, and the so-called panel zone is precast as the floor 10. Alternatively, as shown in FIG. 8, the panel zone may be formed as on-site cast sections 76, 77 that are cast on-site, and the wall columns 30, 40 may be indirectly joined to the floor 10 of the living space unit 100 via the on-site cast sections 76, 77. Note that FIG. 8 is a cross-sectional view showing a cross section corresponding to FIG. 4.

In the modified example shown in FIG. 8, notches 12a, 13a are formed in advance in the floor 10 of the living space unit 100, cut to match the cross-sectional shapes of the wall columns 30, 40. Concrete is poured into these notches 12a, 13a when the common corridor 70 on the Nth floor is poured, forming on-site poured sections 76, 77.

Before concrete is poured into the cutout 12a formed in the first extension 12, the anchor bars (not shown) protruding from the floor 10 into the cutout 12a and the main bars 31 extending from the first wall column 30 on the floor below are tied together with reinforcing bars (not shown) in the cutout 12a with tie wires or the like. Similarly, before concrete is poured into the cutout 13a formed in the second extension 13, the anchor bars 16 extending toward the common corridor 70 and the main bars 41 extending from the second wall column 40 on the floor below are tied together with reinforcing bars (not shown) in the cutout 13a with tie wires or the like.

As a result, the upper ends of the wall columns 30, 40 are indirectly joined to the floor section 10 of the living space unit 100 via the on-site pouring sections 76, 77.

After the on-site cast sections 76, 77 have solidified, a process is carried out in the same manner as in the above embodiment, using the main reinforcements 31, 41 of the wall columns 30, 40 of the lower floor that protrude upward from the on-site cast sections 76, 77, to install the wall columns 30, 40 of the Nth floor. As a result, the lower ends of the wall columns 30, 40 are also indirectly joined to the floor 10 of the living space unit 100 via the on-site cast sections 76, 77.

In the above embodiment, the living space unit 100 is integrated with the common corridor 70, which is cast at the construction site, via the anchoring bars 16 extending toward the common corridor 70. Alternatively, the common corridor 70 may be made of precast concrete with embedded sheath pipes, similar to the floor 10 of the living space unit 100, and the living space unit 100 and the common corridor 70 may be integrated by fastening them together using a post-tensioning prestress anchoring method, which is an anchoring method using PC steel wires.

Although the embodiments of the present invention have been described above, the above embodiments merely show some of the application examples of the present invention, and are not intended to limit the technical scope of the present invention to the specific configurations of the above embodiments.

100: Living space unit 1: Building 10: Floor portion 12: First extension portion (balcony portion)
15: Sheath tube 20: Space forming portion 21: First outer wall (wall portion)
22...Second outer wall (wall portion)
23...Partition wall (wall section)
24: Ceiling section 30: First wall pillar (pillar)
40...Second wall pillar (column)
50...PC steel wire (steel wire)

Claims (6)

A living space unit that is prefabricated and assembled into a building in multiples,
A floor portion and
A wall portion erected on the floor portion,
The floor is made of concrete with reinforcing bars arranged inside,
The wall portion is formed of a wooden board material ,
A balcony portion is integrally provided on the floor portion.
Living space unit. A living space unit that is prefabricated and assembled into a building in multiples,
A floor portion and
A wall portion erected on the floor portion,
The floor is made of concrete with reinforcing bars arranged inside,
The wall portion is formed of a wooden board material ,
A sheath tube through which a steel wire for fastening the horizontally arranged living space units is inserted is embedded in the floor portion.
Living space unit. Further comprising a ceiling portion formed of a wooden board material,
The wall portion has at least two surfaces and is connected by the ceiling portion.
A living space unit according to claim 1 or 2 . A method for constructing a building in which the living space unit according to any one of claims 1 to 3 is incorporated, comprising the steps of:
placing another living space unit above the living space unit;
and providing a column connecting the floor of the living space unit and the floor of the other living space unit.
A method of construction for a building in which a living space unit is incorporated. A method for constructing a building comprising: a floor section; and a wall section erected on the floor section, the floor section being made of concrete with reinforcing bars arranged therein; the wall section being formed of a wooden board material; and a prefabricated living space unit being assembled therein,
placing another living space unit above the living space unit;
providing a column connecting the floor of the living space unit to the floor of the other living space unit;
The column is joined to the floor portion of the other living space unit via a cast-in-place portion formed by pouring concrete at a construction site of the building.
A method of construction for a building in which a living space unit is incorporated. A method for constructing a building in which the living space unit according to claim 2 is incorporated, comprising the steps of:
placing another living space unit adjacent to the living space unit;
a step of inserting the steel wire through the sheath tube of the living space unit and the sheath tube of the other living space unit;
and applying tension to the steel wire to fasten the living space unit and the other living space unit together.
A method of construction for a building in which a living space unit is incorporated.

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