JP7765985B2 - Floor slab structure for apartment buildings - Google Patents

Description

The present invention relates to floor slab structures for apartment buildings.

In an apartment building, facility piping for supplying and discharging water, sewage, electricity, gas, etc. is provided to a plurality of dwelling units on each floor. Such facility piping is provided by branching off from a main vertical piping that runs across the upper and lower floors, with piping connected to each dwelling unit. For example, Patent Document 1 discloses a configuration in which a vertical piping space is provided that penetrates each floor along a plurality of dwelling units lined up above and below each other, and a pit-forming section with a groove-shaped upper surface that serves as a piping pit is provided in the floor slab of each dwelling unit, and the facility piping is stored in the piping pit.
In such apartment buildings, when each floor has a common corridor and dwelling units facing the common corridor, the facility piping may be configured to include a main vertical piping, a horizontal piping that branches off from the main vertical piping and is arranged along the common corridor, and dwelling unit piping that connects from the horizontal piping to each dwelling unit.
In such cases, if horizontal piping is installed above the floor slab of the common corridor, for example if the horizontal piping is a type that produces noise, such as a drainage pipe, the sound will reach the apartments facing the common area, and the horizontal piping can become a noise source.

In order to reduce noise caused by such equipment piping, horizontal piping is sometimes installed below the floor slab of the common area. For example, Patent Document 2 discloses a configuration including a main vertical piping that penetrates from upper to lower floors, an in-unit lead-in pipe installed in each dwelling unit, and a horizontal piping that connects the main vertical piping and the in-unit lead-in pipe, with the horizontal piping installed below the floor slab of the common area. In this configuration, a double floor is formed on the floor slab on the common area side of each dwelling unit. The horizontal piping is installed horizontally near the dwelling unit, penetrates the floor slab diagonally upward near the dwelling unit, and is drawn out into the double floor.
In the configuration disclosed in Patent Document 2, for example, if a building is renovated and the layout of the dwelling units is changed, and the piping routes need to be changed accordingly, this must be accommodated only in the limited area of the double floor portion of the dwelling unit where the piping is pulled out above the floor slab.As a result, there is little flexibility in changing the piping routes, and it is not easy to change the piping routes.
Patent document 3 also discloses a configuration in which the corridor floor slab of the common corridor is constructed with a step portion so that it is positioned above the common corridor side end of the residential floor slab, and the drainage path on the residential floor slab is taken out below the corridor floor slab near the dwelling units.
Even with the configuration disclosed in Patent Document 3, if the layout of the dwelling unit is changed and the piping route needs to be changed accordingly, this must be accommodated only in a limited area of the residential floor slab of the dwelling unit, which means there is little flexibility in changing the piping route, and it is not easy to change the piping route.

Japanese Patent Application Laid-Open No. 2001-254413 Japanese Patent Application Laid-Open No. 2020-84499 JP 2018-71160 A

The problem that this invention aims to solve is to provide a floor slab structure for apartment buildings that suppresses noise from equipment piping to dwelling units and allows for relatively easy changes to the piping paths of equipment piping when renovating dwelling units.

In order to solve the above problems, the present invention employs the following means.
In other words, the floor slab structure of an apartment building of the present invention is a floor slab structure of an apartment building having a common corridor and dwelling units facing the common corridor on each floor, and comprising: an apartment floor slab provided in the dwelling unit; and a corridor floor slab provided in the common corridor and to which the apartment floor slab is connected, the corridor floor slab comprising a low floor section constructed on the dwelling unit side and a high floor section connected to the low floor section by a wall section extending above the low floor section, flooring is provided on the low floor section to form a double floor, and the equipment piping of the apartment building is arranged from above the dwelling unit floor slab, through the double floor of the low floor section, penetrating the wall section and below the high floor section.
The low floor section that forms the corridor floor slab is formed only on one side of the common corridor if there are dwelling units on only one side of the common corridor, and if there are dwelling units on both sides of the common corridor, there is a high floor section on the central side of the common corridor, and a low floor section connected to the wall is provided on one or both sides of the common corridor.
According to this configuration, a double floor consisting of a low floor section and flooring material installed on the low floor section is formed on the dwelling unit side of the common corridor. By forming a double floor in this way in the common corridor section, the equipment piping is placed not only on the dwelling unit floor slabs within the dwelling units, but also on the low floor section in the double floor section on the dwelling unit side of the common corridor. Therefore, when changing the route of the equipment piping within the dwelling unit, it is possible to adjust the route of the equipment piping not only within the dwelling unit but also in the double floor section of the common corridor. This increases the flexibility in changing the route of the equipment piping when renovating the dwelling unit, making it easier to accommodate route changes.
In addition, the corridor floor slab of the common corridor has a certain height difference between the low floor and high floor sections, allowing for the formation of vertically extending walls. In other words, when changing the route of equipment piping in the space above the low floor section of the common corridor, there is room to change the route not only horizontally but also vertically. This further increases the flexibility of changing the route of equipment piping.
In addition, in the common corridor, the equipment piping passes through the wall between the low floor and high floor sections and is installed below the high floor section on the opposite side of the low floor section from the dwelling units. This effectively blocks out sound caused by the piping located below the high floor section by the high floor section of the corridor floor slab and the wall section, achieving high soundproofing performance in the living space within the dwelling units.
In this way, noise from the equipment piping to the dwelling unit can be suppressed, and the piping route of the equipment piping can be changed relatively easily when the dwelling unit is renovated.

In one aspect of the present invention, the height of the upper surface of the dwelling unit floor slab and the height of the upper surface of the low floor portion are approximately the same.
According to this configuration, by making the upper surface height of the dwelling unit floor slab and the lower floor section approximately the same, for example, if the equipment piping is a drainage pipe, it is easy to ensure an appropriate water gradient for the equipment piping from the dwelling unit side toward the common corridor side, and excellent drainage performance can be easily ensured. Here, "approximately the same" for the upper surface heights of the dwelling unit floor slab and the lower floor section means that differences in the upper surface height of the slabs are acceptable to the extent that equipment piping can be installed with a constant gradient via height adjustment materials on the upper surface of each slab from the dwelling unit floor slab to the lower floor section. Specifically, the upper surface heights of the dwelling unit floor slab and the lower floor section are considered to be approximately the same if they are within 5 cm of each other.
Furthermore, since the height of the upper surface of the dwelling unit floor slab and the height of the upper surface of the low floor section are approximately the same, construction of the floor slab can be carried out easily.

In one aspect of the present invention, the facility piping comprises a horizontal piping installed below the high floor section along the common corridor, and a dwelling unit piping connecting the horizontal piping to the dwelling unit, and the dwelling unit piping is arranged from above the dwelling unit floor slab, through the double floor of the low floor section, through the wall section and below the high floor section.
With this configuration, the dwelling unit piping is located not only on the dwelling unit floor slab but also on the low floor in the double floor portion on the dwelling unit side of the common corridor. Therefore, when changing the route of the equipment piping within the dwelling unit, it is possible to adjust the route of the dwelling unit piping not only within the dwelling unit but also in the double floor portion of the common corridor.
In addition, the dwelling unit piping can pass through the wall between the low floor and high floor sections and connect to horizontal piping installed below the high floor section along the common corridor. This effectively blocks out sound from the horizontal piping installed below the high floor section by the high floor section of the corridor floor slab and the wall section, achieving high soundproofing performance in the living space within the dwelling unit.
In addition, in low-floor areas, dwelling unit piping is installed above the corridor floor slab, and in most cases, this dwelling unit piping is dedicated to the dwelling unit that corresponds to it. In this case, even if noise is generated from the piping, it is only when the dwelling unit performs an action that uses the piping, and in most cases, the action itself produces a louder sound than the piping itself. In other words, even if the dwelling unit piping generates a sound, this sound is unlikely to be considered noise in the dwelling units nearby that use the dwelling unit piping.
Furthermore, since the horizontal piping is installed below the raised floor section separated by the wall section and the raised floor section, i.e., on the ceiling of the floor located below the raised floor section, it is possible to prevent the horizontal piping from becoming an obstacle to the movement of goods and other items during construction work or during work.

This invention makes it possible to provide a floor slab structure for apartment buildings that suppresses noise from equipment piping to dwelling units and allows for relatively easy changes to the piping paths of equipment piping when renovating dwelling units.

1 is a plan view showing a schematic configuration of a floor slab structure of an apartment building according to an embodiment of the present invention. FIG. 1 is a schematic vertical cross-sectional view showing an installation mode of facility piping in an apartment building. FIG. 2 is a perspective cross-sectional view of the floor slab structure of the apartment building shown in FIG. 1. FIG. 10 is a cross-sectional view showing a floor slab structure of an apartment building according to a first modified example of an embodiment of the present invention. FIG. 10 is a schematic vertical cross-sectional view showing an installation mode of facility piping according to a second modified example of the embodiment of the present invention. FIG. 10 is a schematic vertical cross-sectional view showing an installation mode of facility piping according to a third modified example of the embodiment of the present invention.

This invention targets a floor slab structure for an apartment building that includes a residential floor slab for each floor of the dwelling unit and a corridor floor slab for a common corridor connected to the residential floor slab. Specifically, the upper surface height of the residential floor slab and the low floor section that constitutes the corridor floor slab built on the dwelling unit side are made approximately the same, and a wall section is provided above the low floor section, with a high floor section connected to the top of the wall section. A double floor is formed in part of the common corridor on the dwelling unit side by the floor material and the low floor section that constitutes the corridor floor slab.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, with reference to the accompanying drawings, an embodiment for carrying out a floor slab structure for an apartment house according to the present invention will be described based on the drawings.
FIG. 1 shows a plan view illustrating a schematic configuration of a floor slab structure of an apartment house according to an embodiment of the present invention.
As shown in Figure 1, the apartment building 1, in plan view, comprises a core section 2 formed in a part of the apartment building 1, and a column-and-beam structure 3 formed in a part other than the core section 2. In this embodiment, the apartment building 1 is a building having three or more stories and a substantially rectangular cross section.
The core 2 has a rectangular shape in plan view and is generally cylindrical so as to be continuous in the vertical direction. The core 2 can be formed, for example, by a multi-story earthquake-resistant wall 3w. The multi-story earthquake-resistant wall 3w can be formed, for example, by a reinforced concrete structure, a steel braced structure, or the like.
In this embodiment, the core section 2 is located in the center of the apartment building 1 in a plan view. The core section 2 may also be located on the periphery, such as at a corner of the apartment building 1. Multiple core sections 2 may be provided in the apartment building 1. Inside the core section 2, for example, elevators, stairwells, equipment rooms, etc. are located.
The column and beam structure 3 is composed of a plurality of columns and beams (not shown). The column and beam structure 3 is made of steel-framed reinforced concrete, reinforced concrete, steel frame, or the like. The plurality of columns that make up the column and beam structure 3 are provided at appropriate intervals at the corners, periphery, interior, etc. of the apartment building 1. On each floor F, a plurality of beams are installed between adjacent columns and between the columns of the column and beam structure 3 and the core 2. On each floor F of the column and beam structure 3, a floor slab 7 supported by the columns and beams is formed. The floor slab 7 is made of, for example, reinforced concrete.
Here, the specific structures of the core portion 2 and the column-beam frame 3 are not limited in any way.

FIG. 2 is a schematic vertical cross-sectional view showing an installation state of facility piping in an apartment building.
Such an apartment building 1 includes a common facility space 10, a common corridor 20, and a plurality of dwelling units 30.
1 and 2, the common equipment space 10 is set inside the core section 2. In this embodiment, a pipe shaft 11 is provided in the common equipment space 10. The pipe shaft 11 extends continuously in a cylindrical shape so as to penetrate each floor F in the vertical direction.
In this embodiment, the pipe shaft 11 is provided as a single unit, but it may be provided as a plurality of separate units.

The column-and-beam frame 3 is provided with a common corridor 20 and a plurality of dwelling units 30. The common corridor 20 extends, for example, along the periphery of the core part 2 on each floor F. The common corridor 20 may also extend to a part other than the periphery of the core part 2.
The multiple dwelling units 30 are arranged along the common corridor 20. The multiple dwelling units 30 are partitioned by an outer wall 31, an inner wall 32, and a partition wall 33, which are provided on the floor slab 7. The outer wall 31 is formed so as to face the outside of the apartment building 1. The inner wall 32 is formed so as to partition each dwelling unit 30 from the common corridor 20. The partition wall 33 is provided so as to connect the outer wall 31 and the inner wall 32, and partitions adjacent dwelling units 30 along the common corridor 20.
An entrance door 34 is provided on the inner wall 32 for accessing each dwelling unit 30 from the common corridor 20.

FIG. 3 is a perspective cross-sectional view of the floor slab structure of the apartment building shown in FIG.
As shown in Figure 3, at least a portion of the floor within each dwelling unit 30 has a double floor structure comprising a dwelling unit floor slab 35 that forms part of the floor slab 7 and a dwelling unit floor material 36 that is supported above the dwelling unit floor slab 35 at a distance.
The floor of the common corridor 20 comprises a first floor portion 21A and a second floor portion 21B. The first floor portion 21A is formed on the dwelling unit 30 side of the common corridor 20. The second floor portion 21B is formed on the opposite side of the common corridor 20 from the dwelling unit 30. In this embodiment, the first floor portion 21A forms the floor of an alcove 38 formed in front of the entrance door 34 of each dwelling unit 30. The alcove 38 refers to a portion in front of the entrance door 34 that is recessed toward the inside of the dwelling unit 30. The alcove 38 forms part of the common corridor 20. The first floor portion 21A forms part of the floor of the common corridor 20.
The area between the alcoves 38 of two adjacent dwelling units 30 forms a protruding portion 30c that protrudes from the front door 34 toward the common corridor 20. Inside this protruding portion 30c, for example, a meter box for the equipment piping described below may be provided.
The common corridor 20 is provided with a corridor floor slab 22 that constitutes part of the floor slab 7. The corridor floor slab 22 is connected to the dwelling unit floor slabs 35 on each floor.
The corridor floor slab 22 includes a low floor portion 23, a high floor portion 24, and a wall portion 25.

The low floor section 23 is constructed on the first floor section 21A on the dwelling unit 30 side of the corridor floor slab 22. In this embodiment, the height (top surface height) of the upper surface 23t of the low floor section 23 and the height (top surface height) of the upper surface 35t of the dwelling unit floor slab 35 in each dwelling unit 30 are substantially the same. A floor material 28 supported by support members (not shown) is provided above the low floor section 23. A double floor 26 consisting of the low floor section 23 and the floor material 28 above it is formed on the first floor section 21A on the dwelling unit 30 side of the common corridor 20. Here, "the upper surface heights of the dwelling unit floor slab 35 and the low floor section 23 being substantially the same" means that differences in the upper surface height of the slabs are allowed to the extent that equipment piping can be installed at a constant gradient on the upper surface of each slab from the dwelling unit floor slab 35 to the low floor section 23 via height adjustment materials. Specifically, the dwelling unit floor slab 35 and the low floor section 23 are considered to be approximately the same if the height of their respective top surfaces is within 5 cm.
The high floor section 24 constitutes the second floor section 21B on the opposite side of the common corridor 20 from the dwelling unit 30. The high floor section 24 is constructed at a higher position than the low floor section 23. The upper surface 24t of the high floor section 24 is formed a predetermined distance above the upper surface 23t of the low floor section 23. Furthermore, the lower surface 24b of the high floor section 24 is formed a predetermined distance above the upper surface 23t of the low floor section 23. The second floor section 21B includes a high floor section flooring material 27 provided on the high floor section 24. The high floor section flooring material 27 is formed integrally with the flooring material 28 of the first floor section 21A. The floor surface of the common corridor 20 is formed by the flooring material 28 of the first floor section 21A and the high floor section flooring material 27 of the second floor section 21B.
The wall portion 25 extends in the vertical direction and connects the low floor portion 23 and the high floor portion 24 at the boundary between the first floor portion 21A and the second floor portion 21B. The wall portion 25 is formed continuously on the lower side of the inner wall 32 in areas other than the alcove 38. The height of the wall portion 25, i.e., the length from the upper surface 23t of the low floor portion 23 to the lower surface 24b of the high floor portion 24, is formed to be larger than the diameter of the dwelling unit piping 130, which will be described later.
In this way, the high floor section 24 is connected to the low floor section 23 by a wall section 25 that extends above the low floor section 23 .

The apartment building 1 is equipped with facility piping 100. The facility piping 100 includes, for each dwelling unit 30, water pipes that supply clean water, gas pipes that supply gas, electrical wiring that supply electricity, communication lines such as optical fiber and telephone lines, and drainage pipes that discharge sewage from each dwelling unit 30.
The facility piping 100 includes a main vertical piping 110, a horizontal piping 120, and a dwelling unit piping 130.
The main vertical pipe 110 is housed in a pipe shaft 11 in the common equipment space 10. The main vertical pipe 110 is provided to penetrate between the upper and lower floors.
The horizontal pipes 120 are provided on each floor F. The horizontal pipes 120 are connected to the main vertical pipes 110 on each floor F. The horizontal pipes 120 extend in the direction in which the common corridors 20 continue. In other words, the horizontal pipes 120 extend in the direction in which the multiple dwelling units 30 arranged along the common corridor 20 are lined up. The horizontal pipes 120 are arranged below the raised floor section 24 of the common corridor 20, that is, in the ceiling space above the common corridor 20 on the lower floor.

Dwelling unit piping 130 is provided for each dwelling unit 30. The dwelling unit piping 130 connects the horizontal piping 120 to each dwelling unit 30. The dwelling unit piping 130 is arranged from above the dwelling unit floor slab 35, through the double floor 26 of the low floor section 23, through the wall section 25, and below the high floor section 24. More specifically, within each dwelling unit 30, the dwelling unit piping 130 is arranged between the dwelling unit floor slab 35 and the dwelling unit floor material 36 above the dwelling unit floor slab 35. The dwelling unit piping 130 drawn out from each dwelling unit 30 is arranged between the low floor section 23 of the double floor 26 and the floor material 28 in the first floor section 21A on the dwelling unit 30 side of the common corridor 20. Here, since the height of the upper surface 35t of the dwelling unit floor slab 35 and the height of the upper surface 23t of the low floor section 23 are approximately the same, if the dwelling unit piping 130 is a drainage pipe, an appropriate water gradient can be easily ensured from each dwelling unit 30 side toward the common corridor 20 side.
The dwelling unit piping 130 extends from above the low floor section 23 within the double floor 26, through the wall section 25, and below the high floor section 24. The dwelling unit piping 130 is connected to the horizontal piping 120 on the underside of the high floor section 24. Here, in the first floor section 21A, the dwelling unit piping 130 is arranged above the upper surface 23t of the low floor section 23. In the second floor section 21B, the dwelling unit piping 130 is arranged below the lower surface 24b of the high floor section 24. No grooves, recesses, etc. for accommodating a radial portion of the dwelling unit piping 130 are formed in the upper surface 23t of the low floor section 23 or the lower surface 24b of the high floor section 24, and a decrease in rigidity that would be caused by forming grooves, recesses, etc. in the low floor section 23 and the high floor section 24 is avoided.

As described above, the dwelling piping 130 is provided to penetrate the wall portion 25. A hole corresponding to the diameter of the dwelling piping 130 may be provided in the wall portion 25, and the dwelling piping 130 may be installed to penetrate this hole. However, for example, a hole having a diameter sufficiently larger than the diameter of the dwelling piping 130, for example, about three or four times the diameter of the dwelling piping 130, may be provided in the wall portion 25, and the dwelling piping 130 may be inserted through this hole.
In this way, by increasing the diameter of the hole in the wall section 25 through which the dwelling unit piping 130 is inserted and passes, the flexibility in changing the route is improved when it is necessary to change the route of the dwelling unit piping 130, for example, when renovating a dwelling unit.
In this way, when the hole in the wall portion 25 is made sufficiently large, it is desirable to fill the space between the wall surface of the hole in the wall portion 25 and the dwelling unit piping 130 with sound-absorbing material such as glass wool to seal the space between the dwelling unit piping 130 and the hole in the wall portion 25, thereby making it difficult for noise caused by the horizontal piping 120 to be transmitted to the dwelling unit 30.

In each figure, only one piece of equipment piping 100 is shown to be pulled into each dwelling unit 30; however, in reality, multiple sets of equipment piping 100 are arranged for each purpose, such as water pipes, gas pipes, electrical wiring, communication lines, and drainage pipes. That is, the equipment piping 100 includes main vertical pipes 110, horizontal pipes 120, and dwelling piping 130 for water pipes, gas pipes, electrical wiring, communication lines, and drainage pipes, respectively. In addition, when the equipment piping 100 is electrical wiring or communication lines, the electrical wiring or communication lines may be inserted inside a cylindrical pipe, or the wire material that forms the electrical wiring or communication line may itself be referred to as the equipment piping 100.

The floor slab structure of the apartment building 1 as described above is a floor slab structure of the apartment building 1, which has a common corridor 20 and dwelling units 30 facing the common corridor 20 on each floor F, and comprises a dwelling unit floor slab 35 provided in the dwelling unit 30 and a corridor floor slab 22 provided in the common corridor 20 and to which the dwelling unit floor slab 35 is connected, and the corridor floor slab 22 has a low floor section 23 constructed on the dwelling unit 30 side and a high floor section 24 connected to the low floor section 23 by a wall section 25 extending above the low floor section 23, and floor material 28 is provided on the low floor section 23 to form a double floor 26, and the equipment piping 100 of the apartment building 1 is arranged from above the dwelling unit floor slab 35, through the double floor 26 of the low floor section 23, and through the wall section 25 to below the high floor section 24.
According to this configuration, a double floor 26 is formed on the dwelling unit 30 side of the common corridor 20, consisting of a low floor section 23 and a floor material 28 provided on the low floor section 23. By forming the double floor 26 in this manner in the common corridor 20 portion, the equipment piping 100 is arranged not only on the dwelling unit floor slab 35 within the dwelling unit 30, but also on the low floor section 23 in the double floor 26 portion on the dwelling unit 30 side of the common corridor 20. Therefore, when changing the route of the equipment piping 100 within the dwelling unit 30, it is possible to adjust the route of the equipment piping 100 not only within the dwelling unit 30 but also in the double floor 26 portion of the common corridor 20. This improves the flexibility of changing the route of the equipment piping 100 when renovating the dwelling unit 30, making it easier to accommodate such route changes.
Furthermore, the corridor floor slab 22 of the common corridor 20 has a certain height difference between the low floor section 23 and the high floor section 24, which is sufficient to form a wall section 25 extending in the vertical direction. In other words, when changing the route of the equipment piping 100 on the low floor section 23 in the common corridor 20, there is room to change the route not only horizontally but also vertically. This further improves the flexibility of changing the route of the equipment piping 100.
Furthermore, in the common corridor 20, the facility piping 100 penetrates the wall 25 provided between the low floor section 23 and the high floor section 24, and is arranged below the high floor section 24 on the opposite side of the low floor section 23 from the dwelling unit 30. As a result, sound caused by the piping arranged below the high floor section 24 is effectively blocked by the high floor section 24 of the corridor floor slab 22 and the wall section 25, thereby achieving high soundproofing performance in the living space within the dwelling unit 30.
In this way, noise from the equipment piping 100 to the dwelling unit 30 can be suppressed, and the piping route of the equipment piping 100 can be changed relatively easily when the dwelling unit 30 is renovated.

In particular, in this embodiment, as described above, the horizontal pipes 120, which are pipes shared between the dwelling units 30, are isolated from the dwelling units 30 by the raised floor section 24 and wall section 25 of the corridor floor slab 22, and noise caused by the horizontal pipes 120 is contained in the ceiling of the common corridor 20 on the floor F below. This allows for high soundproofing performance.

Furthermore, the height of the upper surface 35t of the dwelling unit floor slab 35 and the height of the upper surface 23t of the low floor portion 23 are approximately the same.
With this configuration, by making the height of the upper surface 35t of the dwelling unit floor slab 35 and the height of the upper surface 23t of the low floor section 23 approximately the same, for example, if the equipment piping 100 is a drainage pipe, it is easy to ensure an appropriate water gradient of the equipment piping 100 from the dwelling unit 30 side toward the common corridor 20 side, and excellent drainage performance can be easily ensured.
Furthermore, since the height of the upper surface 35t of the dwelling unit floor slab 35 and the height of the upper surface 23t of the low floor section 23 are approximately the same, construction of the floor slab can be carried out easily.

In particular, in this embodiment, the height of the wall portion 25 is formed to be larger than the diameter of the dwelling piping 130. Therefore, the dwelling piping 130 can be positioned nearly horizontally, extending, for example, in a straight line, and passed through the wall portion 25 from above the low floor section 23 downward to the high floor section 24. In other words, when the dwelling piping 130 is pulled from the low floor section 23 to the high floor section 24, there is no need to significantly change its gradient or bend the piping. This makes it easy to install the equipment piping 100. Furthermore, for example, if the piping is for drainage, the water gradient can be easily adjusted.

In addition, the facility piping 100 includes horizontal piping 120 installed below the high floor section 24 along the common corridor 20, and dwelling unit piping 130 connecting the horizontal piping 120 to the dwelling unit 30, and the dwelling unit piping 130 is arranged from above the dwelling unit floor slab 35, through the double floor 26 of the low floor section 23, and penetrating the wall section 25 to below the high floor section 24.
With this configuration, the dwelling unit piping 130 is arranged not only on the dwelling unit floor slab 35 within the dwelling unit 30, but also on the low floor section 23 in the double floor 26 portion on the dwelling unit 30 side of the common corridor 20. Therefore, when changing the route of the equipment piping 100 within the dwelling unit 30, it is possible to adjust the route of the dwelling unit piping 130 not only within the dwelling unit 30, but also in the double floor 26 portion of the common corridor 20.
Furthermore, the dwelling unit piping 130 can pass through the wall 25 provided between the low floor section 23 and the high floor section 24 and be connected to the horizontal piping 120 provided below the high floor section 24 along the common corridor 20. As a result, sound caused by the horizontal piping 120 located below the high floor section 24 is effectively blocked by the high floor section 24 of the corridor floor slab 22 and the wall section 25, achieving high soundproofing performance in the living space within the dwelling unit 30.
Furthermore, in the low floor section 23, dwelling unit piping 130 is installed above the corridor floor slab 22, and in most cases, this dwelling unit piping 130 is basically dedicated to the dwelling unit 30 that corresponds to this dwelling unit piping 130. In this case, even if noise is generated from the piping, it is only when the dwelling unit 30 performs an action that uses the piping, and in most cases, the sound generated by that action itself is louder than the sound of the piping. In other words, even if the dwelling unit piping 130 generates noise, this sound is unlikely to become noise in the dwelling units 30 that use the dwelling unit piping 130 and are located nearby.
Furthermore, since the horizontal piping 120 is installed below the high floor section 24, which is separated by the wall section 25 and the high floor section 24, i.e., on the ceiling of floor F, which is located below the high floor section 24, the horizontal piping 120 can be prevented from obstructing the flow of goods and the like during construction work or during work.

Furthermore, the corridor floor slab 22 has a wall portion 25 between the low floor portion 23 and the high floor portion 24, which functions like a beam and continues in the direction in which the common corridor 20 extends. This allows the rigidity of the corridor floor slab 22 to be increased without increasing its thickness.
Furthermore, by providing horizontal piping 120 below the high floor section 24 and connecting the dwelling unit piping 130 to the horizontal piping 120 below the high floor section 24, there is no need to run piping above the high floor section 24, eliminating the need for a double-floor structure. Furthermore, because the dwelling unit piping 130 is located above the low floor section 23, there is no need to install horizontal piping 120 below the low floor section 23, which reduces the space above the ceiling in the common corridor 20 on the lower floor. In this way, efficient piping can be achieved overall, reducing the piping space in the common corridor 20. This allows the floor height to be lowered.
Furthermore, since the main vertical pipe 110 is installed in the common facility space 10 and away from the dwelling units 30, the impact of noise generated by the main vertical pipe 110 can be reduced.

(First Modification of the Embodiment)
The floor slab structure of the apartment building of the present invention is not limited to the above-described embodiment explained with reference to the drawings, and various modifications are possible within the technical scope.
For example, in the above embodiment, the dwelling unit floor slab 35 and the low floor portion 23 are configured to be integrally continuous, but this is not limited to this.
FIG. 4 is a cross-sectional view showing a floor slab structure of an apartment building according to a first modified example of the embodiment of the present invention.
As shown in Figure 4, when a beam 70 is provided on the dwelling unit 30 side of the common corridor 20, the beam 70 may form all or part of the low floor section 23B. In this case, the beam 70 extends in the direction in which the common corridor 20 continues on the dwelling unit 30 side of the common corridor 20. The dwelling unit floor slab 35 is joined to the beam 70. The height of the upper surface 35t of the dwelling unit floor slab 35 and the height of the upper surface 70t of the beam 70 that constitutes the low floor section 23B are approximately the same. A floor material 28 is provided above the beam 70, and the upper surface 70t of the beam 70 and the floor material 28 form a double floor 26B.
As in the above embodiment, the high floor section 24 is constructed at a position higher than the upper surfaces 70t of the beams 70 that constitute the low floor section 23B. The wall section 25 extends in the vertical direction and connects the high floor section 24 to the upper surfaces 70t of the beams 70 that constitute the low floor section 23B.
The dwelling unit piping 130 is arranged from above the dwelling unit floor slab 35, through the double floor 26B above the low floor section 23B, through the wall section 25, and below the high floor section 24.
In this configuration, as in the above embodiment, noise from the equipment piping 100 to the dwelling unit 30 can be suppressed, and the piping route of the equipment piping 100 can be changed relatively easily when the dwelling unit 30 is renovated.

(Second Modification of the Embodiment)
Next, a second modification of the floor slab structure of the apartment house shown as the embodiment will be described with reference to Fig. 5. Fig. 5 is a schematic vertical cross-sectional view showing the installation mode of the equipment piping in the floor slab structure of the apartment house in this second modification. In the apartment house 1 in this second modification, the piping form of the equipment piping 300 is different from the equipment piping 100 in the embodiment.

The facility piping 300 includes a main vertical piping 310, a horizontal piping 320, a secondary vertical piping 340, dwelling unit piping 330, and other floor dwelling unit piping 350.
The main vertical piping 310 is installed to penetrate the pipe shaft 11 of the common equipment space 10 across the upper and lower floors.
Unlike the above embodiment, the horizontal piping 320 is provided only on the specific floor FS. In this modified example, one of the two floors F is designated as the specific floor FS, and the floor FD below the specific floor FS is a different floor F from the specific floor FS. On the specific floor FS, the horizontal piping 320 is connected to the main vertical piping 310 and is arranged below the raised floor 24 of the common corridor 20.
On the specific floor FS, dwelling unit piping 330 is connected to the horizontal piping 320 for each dwelling unit 30. The dwelling unit piping 330 is arranged from above the dwelling unit floor slab 35, through the double floor 26 of the low floor section 23, through the wall section 25, and below the high floor section 24.
A sub-vertical pipe 340 is connected to the horizontal pipe 320, and extends vertically from the horizontal pipe 320 to a floor F different from the specific floor FS, in this modified example, to the floor FD below the specific floor FS. The sub-vertical pipe 340 is led out from the horizontal pipe 320 on the specific floor FS, penetrates the wall 25, and extends above the dwelling unit floor slab 35, extending vertically within the area of the protruding portion 30c where a meter box or the like is provided, before reaching the double floor 26 of the floor FD below.
The lower end of the auxiliary vertical piping 340 is connected to another floor dwelling unit piping 350, which is connected to the dwelling unit 30 on the lower floor FD. The other floor dwelling unit piping 350 is arranged from above the dwelling unit floor slab 35 of the dwelling unit 30 on the lower floor FD into the double floor 26 of the low floor section 23. The other floor dwelling unit piping 350 is connected to the auxiliary vertical piping 340 within the double floor 26.

In an apartment building such as the one described above, there are provided dwelling unit piping 330 provided in the dwelling units 30 on each floor F, horizontal piping 320 connecting the main vertical piping 310 and the dwelling unit piping 330 on a specific floor FS, and secondary vertical piping 340 extending vertically from the horizontal piping 320 to a floor FD different from the specific floor FS and connected to other floor dwelling unit piping 350, which is the dwelling unit piping on the different floor FD, and the horizontal piping 320 is provided below the raised floor section 24 of the common corridor 20.
According to the above-described configuration, the main vertical pipe 310 is installed in the common facility space 10, and therefore a horizontal pipe 320 is required to connect it to the dwelling unit pipes 330 installed in each dwelling unit 30. Here, a sub-vertical pipe 340 is provided that extends vertically from the horizontal pipe 320 to a floor FD different from the specific floor FS and is connected to other-floor dwelling unit pipes 350 on the different floor FD. Therefore, even if the horizontal pipe 320 is installed only on the specific floor FS, other-floor dwelling unit pipes 350 of dwelling units 30 other than the specific floor FS can also be connected to the horizontal pipe 320 via the sub-vertical pipe 340. In this way, by providing the sub-vertical pipes 340 connecting the upper and lower floors near each dwelling unit 30, the amount of horizontal pipes 320 installed is reduced, thereby reducing material costs and construction costs.
Furthermore, since the main vertical piping 310 is installed in the common facility space 10 and away from the dwelling units 30, the impact of noise generated by the main vertical piping 310 can be reduced.
Furthermore, with regard to the dwelling units 30 on floors FD where no horizontal pipes 320 are installed, they are connected to the nearest horizontal pipe 320 via a sub-vertical pipe 340 extending vertically, but because the horizontal pipes 320 are installed on each specific floor FS, there is no need to install the sub-vertical pipes 340 so that they span many floors F vertically, and therefore the impact of noise caused by the sub-vertical pipes 340 is limited. For the above reasons, it is possible to reduce the amount of horizontal pipes 320 installed while reducing the impact of equipment noise caused by the pipes on the dwelling units 30 on the floors above and below.

In particular, in this modified example, one of the two floors F is designated as a specific floor FS, and the floor FD below the specific floor FS is a floor F different from the specific floor FS, and the secondary vertical piping 340 extends vertically to the floor FD below the specific floor FS.
In this configuration, for example, if the piping is a water pipe that supplies clean water, only the water used by the residents of the dwelling unit 30 on the lower floor FD, where no horizontal piping 320 is provided, flows through the secondary vertical piping 340 to which the dwelling unit piping 350 on other floors of this dwelling unit 30 is connected.Therefore, even if noise is generated from the secondary vertical piping 340 when the resident of this dwelling unit 30 uses water, only the resident of this dwelling unit 30 who is actually using the water will be affected, and the use of water by other dwelling units 30 is unlikely to be a source of noise.
This makes it possible to reduce the impact of noise caused by water supplied through the pipes on the dwelling units 30 on the upper and lower floors.
It goes without saying that the second modified example has other effects similar to those of the embodiment already described.

(Third Modification of the Embodiment)
Next, a third modified example of the floor slab structure of an apartment building shown as the above embodiment will be described using Figure 6. Figure 6 is a schematic vertical cross-sectional view showing the installation mode of equipment piping in the floor slab structure of an apartment building in this third modified example. The floor slab structure of an apartment building in this third modified example is a further modified example of the above second modified example, and the piping form of the equipment piping 400 is different from the equipment piping 100, 300 in the above embodiment and the second modified example.
As shown in FIG. 6 , the facility piping 400 includes a main vertical piping 410 , a horizontal piping 420 , a secondary vertical piping 440 , dwelling unit piping 430 , and other floor dwelling unit piping 450 .
The main vertical piping 410 is installed to penetrate the pipe shaft 11 of the common equipment space 10 across the upper and lower floors.
The horizontal piping 420 is provided only on the specific floor FS. In this modified example, one of the three floors F is designated as the specific floor FS, and the floors FD below and FU above the specific floor FS are floors F different from the specific floor FS. On the specific floor FS, the horizontal piping 420 is connected to the main vertical piping 410 and is arranged below the raised floor section 24 of the common corridor 20.
On the specific floor FS, dwelling unit piping 430 is connected to horizontal piping 420 that is laid horizontally up to the vicinity of dwelling unit 30. Dwelling unit piping 430 is arranged from above dwelling unit floor slab 35, through double floor 26 of low floor section 23, through wall section 25, and below high floor section 24.
A secondary vertical pipe 440 is connected to the horizontal pipe 420, and extends vertically from the horizontal pipe 420 to a floor F different from the specific floor FS, in this modified example, to the floor FU above the specific floor FS and the floor FD below. The secondary vertical pipe 440 is led out from the horizontal pipe 420 on the specific floor FS, penetrates the wall 25, and extends above the dwelling unit floor slab 35, extending vertically within the area of the protruding portion 30c where a meter box or the like is provided, before reaching the double floor 26 of the lower floor FD and the upper floor FU.
On the lower floor FD, the lower end of the auxiliary vertical pipe 440 is connected to the other floor dwelling unit piping 450 connected to the dwelling unit 30 on the lower floor FD. On the upper floor FU, the upper end of the auxiliary vertical pipe 440 is connected to the other floor dwelling unit piping 450 connected to the dwelling unit 30 on the upper floor FU.

It goes without saying that the third modified example has the same effects as the embodiment and the second modified example already described.
In this modification, the amount of horizontal piping installed is further reduced, which reduces material costs and construction costs, and further reduces the impact of piping during renewal, thereby further improving renewability.

(Other Modifications)
The apartment building of the present invention is not limited to the above-described embodiments and modifications explained with reference to the drawings, and various other modifications are possible within the technical scope.
For example, in the above embodiment and each modified example, the common equipment space 10 is provided in the core section 2, but it may also be provided, for example, outside the core section 2, adjacent to the core section 2.
In addition to this, it is possible to select and discard the configurations given in the above embodiment and each modified example, or to change them to other configurations as appropriate, without departing from the spirit of the present invention.
For example, in the above embodiment, the facility piping includes water pipes, gas pipes, electrical wiring, communication lines, and drainage pipes, but each of these may have a different piping configuration. For example, the drainage pipes may have the configuration of the above embodiment described with reference to Fig. 2, the water pipes and gas pipes may have the configuration of the second modified example described with reference to Fig. 5, and the electrical wiring and communication lines may have the configuration of the third modified example described with reference to Fig. 6.
In addition, in the above-described embodiment and modified examples, the low floor section forming the corridor floor slab is provided only on the side of the dwelling unit when there is a dwelling unit on only one side of the common corridor, but this is not limited to this, and if there are dwelling units on both sides of the common corridor, a high floor section may be provided in the center of the common corridor, and low floor sections connected to the wall may be provided on only one side or both sides. As a result, as in the above-described embodiment and modified examples, noise from the equipment piping to the dwelling units is suppressed, and when the dwelling units are renovated, it is relatively easy to accommodate changes in the route of the equipment piping.

1 Apartment building 28 Floor material 20 Common corridor 30 Dwelling unit 22 Corridor floor slab 35 Dwelling unit floor slab 23, 23B Low floor section 35t Upper surface 23t Upper surface 100, 300, 400 Equipment piping 24 High floor section 120, 320, 420 Horizontal piping 25 Wall section 130, 330, 430 Dwelling unit piping 26, 26B Double floor F Floor

Claims (3)

A floor slab structure of an apartment building with a common corridor and a dwelling unit facing the common corridor on each floor,
A dwelling unit floor slab provided in the dwelling unit;
a corridor floor slab provided in the common corridor and connected to the dwelling unit floor slab;
Equipped with
The corridor floor slab comprises a low floor portion constructed on the dwelling unit side and a high floor portion connected to the low floor portion by a wall portion extending above the low floor portion,
The wall is formed as part of a floor slab supported by beams;
A floor material is provided on the low floor portion to form a double floor,
The floor slab structure of the apartment building is characterized in that the equipment piping of the apartment building is arranged from above the dwelling unit floor slab, through the double floor of the low floor section, through the wall section, and below the high floor section. The beam is provided so as to extend in a direction in which the common corridor continues,
The beam forms the low floor portion, and the dwelling unit floor slab is joined to the beam,
The height of the upper surface of the dwelling unit floor slab and the height of the upper surface of the beam are approximately the same,
2. The floor slab structure of an apartment building according to claim 1, wherein the wall portion connects the upper surface of the beam and the raised floor portion . The dwelling units are provided on both sides of the common corridor,
The floor slab structure for an apartment building according to claim 1 or 2, characterized in that the high floor section is provided in the center of the common corridor, and the wall section and the low floor section connected to the wall section are provided on both sides of the common corridor.