JP4813969B2 - Piping structure of building unit and its construction method - Google Patents

Description

  The present invention relates to a piping structure in a building unit and a construction method thereof.

Conventionally, in a building unit, it is known that piping for water supply or drainage is previously routed under the floor of the building unit in a factory, and this building unit is transported to a construction site (for example, a patent) Reference 1).
JP 2001-288820 A

  By the way, in an apartment house or the like, a floor fire protection area screen may be formed between an upper floor building unit and a lower floor building unit that are stacked one above the other, and a drain pipe may be routed.

  This drain pipe is routed, for example, when installing a bathroom or a washroom in a building unit on the upper floor, but this drain pipe has a larger diameter than that of the tap water pipe.

  For this reason, it has been difficult to route the drainage pipe while forming the floor fire protection screen in the limited space between the building unit on the upper floor and the building unit on the lower floor.

  Of course, if a large space is secured between the floor of the building unit on the upper floor and the ceiling of the building unit on the lower floor, it is easy to route the drain pipe, but in that case, the vertical dimension of the building unit is large. This increases costs.

  The present invention has been made paying attention to the above-mentioned problems, and drains water while securing a floor fire prevention area screen in a limited space between the upper floor building unit and the lower floor building unit. It is an object of the present invention to provide a building unit piping structure and a construction method thereof capable of arranging pipes.

  The present invention has been made in view of the above circumstances, and the invention according to claim 1 is configured by stacking an upper-floor building unit and a lower-floor building unit, and the upper-floor building. In a unit building in which a floor fire prevention screen with fire resistance is provided between the unit and the building unit on the lower floor, the building unit piping structure applied to the building unit on the upper floor provided with a bathroom. A plumbing box is provided in a part of the screen of the floor fire prevention area, and is provided with a fireproof finish that is continuous with the floor fire protection area screen, and the drainage pipe for the bathroom is disposed in the pipe box. In addition, the building unit has a piping structure characterized by being connected to a vertical drainage pipe through the side of the piping box.

  The invention according to claim 2 is the piping structure of the building unit according to claim 1, wherein the building unit in which the piping box is installed is provided with a bus core unit that forms a bathroom, and In the part where the bus core unit is installed, the floor fire protection area screen is arranged at a lower position than the floor fire protection area screen of the general part where the bus core unit is not installed, and the drain pipe is from the general part. It is arranged at a position lower than the floor fire protection area screen arranged at a lower position, and the piping box protrudes below the boundary between the upper floor building unit and the lower floor building unit. The building unit has a piping structure.

  Moreover, in invention of Claim 3, in the piping structure of the building unit of Claim 1 or Claim 2, the said piping box is formed combining the some division | segmentation part, It is characterized by the above-mentioned. The building unit piping structure was adopted.

  Further, the invention according to claim 4 is the building unit piping structure according to claim 3, wherein the piping box is viewed from above from the front side of the unit that does not overlap the bus core unit when viewed from above. Formed in a substantially constant width shape on the back side of the unit that overlaps with the bus core unit, the divided parts form at least an intermediate part between the end part that forms one end part in the longitudinal direction of the piping box and the piping box. An intermediate part, and the end part forms a bottom plate that forms a bottom surface of the piping box, a side wall of the piping box, and surrounds three sides of the bottom plate, and is substantially U-shaped when viewed from above. The intermediate part is cross-sectioned by a bottom plate that can be continuously arranged on a bottom wall and a side wall of the end part part, and side plates that are erected on both ends thereof And a pipe structure of the building unit, characterized in that it is formed into U-shape.

  The invention according to claim 5 is the construction method of the piping structure of the building unit according to any one of claims 2 to 4, wherein the piping box is installed in a construction process in a factory of the building unit. Forming the floor fire zone screen, and further installing the bus core unit above the floor fire zone screen, and forming the piping box in a construction process in which each building unit is coupled, and The construction method is characterized in that the drainage pipe is wired in the piping box and connected to the drainage vertical pipe.

  The invention according to claim 6 is the construction method according to claim 5, wherein the piping structure of the building unit according to claim 3 or claim 4 is constructed. It was set as the construction method characterized by inserting a division | segmentation part into the downward direction of the said installed bus core unit, and joining each division | segmentation part and forming a piping box.

  In the building unit piping structure according to claim 1, a piping box that falls downward from the floor fire protection area screen is formed on a part of the floor fire protection area screen provided in the upper floor building unit. A drain pipe is routed in this piping box.

  In this way, only the part that pipes the drain pipe is arranged lower than the floor fire protection area screen, so it is wasteful compared to arranging the drain pipe on the floor fire area screen of uniform height. Space can be eliminated. Accordingly, it is possible to route the drain pipe at a low cost while securing the floor fire protection area screen in a limited space between the upper floor building unit and the lower floor building unit.

  Furthermore, in the piping structure of the building unit according to claim 2, the floor fire protection area screen of the part where the bus core unit is installed is compared with the floor fire protection area screen of the general part where the bus core unit is not installed. It is installed in a low position. For this reason, the position of the floor surface of the bathroom formed by the bath core unit can be lowered to achieve a flat floor inside and outside the bathroom.

  Moreover, since the piping box protrudes further below the boundary between the building unit on the upper floor and the building unit on the lower floor from the floor fire protection area screen, which is lower than the general part, the piping box is placed on the upper floor. It is possible to eliminate more wasted space as compared with the case where it is arranged in a building unit.

  In the building unit piping structure according to claim 3 and claim 4, the piping box is formed by combining a plurality of divided parts.

  For this reason, it is easy to install the piping box after the installation of the bus core unit, the installation of the bus core unit can be performed at the factory, and the installation of the piping box can be performed at the construction site.

  Therefore, workability can be improved compared to installing the bus core unit at the construction site. In addition, if the piping box is assembled on site in this way, the piping box will not protrude from the building unit during transportation of the building unit, so there is no risk of the piping box being damaged during transportation, and transportability is also improved. Excellent.

  Furthermore, in the piping structure of the building unit according to the fourth aspect, when assembling the piping box, the end part is first inserted below the bus core unit, and then the intermediate parts are sequentially inserted.

  By carrying out like this, the piping box enclosed by the baseplate and the side plate can be formed, and the upper end part of a side plate can be made to continue to a floor fire-protection area screen.

  Therefore, in the invention according to claim 4, the piping box can be assembled more smoothly.

  In the construction method according to claim 5, in the construction process of the factory, the piping box protruding downward from the boundary with the building unit on the lower floor is formed in the construction process in the construction site where the building unit is joined. .

  For this reason, when transporting a building unit from the factory to the construction site, the piping box does not protrude from the building unit. It is easy to transport and there is no risk of damage to the piping box.

  Further, in the construction method according to the sixth aspect, when forming the piping box, each divided part is formed by being inserted below the bus core unit. Excellent. In addition, the restriction on the shape of the piping box can be suppressed, that is, the piping box can be inserted into the deep position of the bus core unit, and the degree of freedom of the location of the drain pipe is increased.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(Embodiment 1)
FIG. 1 is a cross-sectional view of a main part of a unit building UH to which the building unit piping structure of the first embodiment is applied. The unit building UH includes a plurality of lower-floor building units 1a constituting a first floor portion. , 1b, a plurality of upper floor building units 2a, 2b constituting the second floor portion are installed, and these units 1a, 1b, 2a, 2b are connected to each other.

  And the piping structure of the building unit of Embodiment 1 is applied to the building unit 2a of the upper floor which forms a part of bathroom BR and washroom SR.

  The bathroom BR is formed inside a bus core unit BU installed in the building unit 2a. Moreover, the washroom SR is formed by combining a part of the adjacent building units 2b.

  Next, the building unit 2a to which the building unit piping structure of the first embodiment is applied will be described.

  Like the other building units 1a, 1b, 2b, the building unit 2a includes a floor structure 21, a plurality of columns 22 (see FIG. 4) erected on the floor structure 21, and these columns 22 The ceiling structure 23 joined to the upper part of the.

  The floor structure 21 includes a floor frame 213 formed in a rectangular frame shape by a pair of girder floor beams 211 and a pair of end floor beams 212 (see FIG. 5). In addition, as shown in FIG. 5, four small beams 214 are bridged between the wife floor beams 212.

  As shown in FIG. 1, the small beam 214 has a lower surface that coincides with the lower surface of the floor beam 212, that is, the lower surface of the floor frame 213 and the floor structure 21. Are arranged as follows.

  A floor fire protection area screen 3 is provided between the building units 2a, 2b on the upper floor and the building units 1a, 1b on the lower floor. The floor fire prevention area screen 3 is formed by laying a fire prevention board material 31 made of a material excellent in fire resistance such as a cement board or a gypsum board.

  As shown in FIG. 4, the floor fire protection area screen 3 has a lower surface of the floor board material 4 in a portion of the building unit 2 a having the bathroom BR except the bathroom BR and a general portion 3 a which is a portion of the other building unit 2 b. It is formed by laying a fireproof plate 31 in contact with. In addition, the floor board material 4 and the fire prevention board material 31 are laid on the floor joists 52 that are constructed so as to cross over the floor beam 51. Further, as schematically shown in FIG. 1, in the building unit 2a having the bathroom BR, the floor joists 52 are provided only in a range outside the bathroom BR.

  On the other hand, the building unit 2a having the bathroom BR is provided with a low partition part 3b arranged at a position lower than the general part 3a as the floor fire protection area screen 3.

The low partition portion 3 b is formed by the flat portion 3 c and the piping box 6.
The flat surface portion 3c is provided in a range where the weight of the bus core unit BU is applied. As described above, since the height of the lower surface of each of the small beams 214 coincides with the lower surface of the floor beam 212, the flat surface portion 3c is lower than the general portion 3a of the fire protection area screen 3. Placed in position. Accordingly, the floor core unit BU is arranged at a position lower than the general portion 3a, and the flat flooring is made uniform so that the height of the floor inside and outside the bathroom BR is uniform.

  Furthermore, as shown in FIG. 5, a pipe space PS that is a space that is opened without laying the fire prevention plate material 31 is provided in a part of the flat portion 3 c. This piping space PS is a space for routing the bathroom drain pipe 7 of the bus core unit BU, which will be described later, and extends with a certain width from a position overlapping the bus core unit BU as viewed from above. Has been.

  That is, the fireproof plate 31 is laid out except for the space between the two inner small beams 214 (shown as 214 (a) in the drawing) among the four small beams 214. Furthermore, the fireproof plate 31 is also laid on a part between the inner small beams 214, that is, on the back side of the bus core unit BU, and a piping space PS is formed on the remaining part.

  In the plan view of FIG. 3, the position where each small beam 214 is extended is indicated by a fine oblique line, and the position of the piping space PS is indicated by an oblique line wider than the oblique line indicating the small beam 214. Yes.

  A piping box 6 shown in FIG. 6 is provided in the piping space PS. The piping box 6 includes a rectangular bottom wall 6 a that forms the bottom surface of the piping box 6, and side walls 6 b, 6 c, 6 d, and 6 e that are erected around the bottom wall 6 a to form the peripheral surface of the piping box 6. Is formed in a rectangular box shape opened upward.

  And this piping box 6 is provided so that the upper end part of the side walls 6b, 6c, 6d, and 6e may contact the edge part of each fire prevention board material 31 surrounding the space PS for piping. Accordingly, as shown in FIGS. 1 and 2, the piping box 6 is below the plane portion 3c and falls below the boundary BL between the building unit 2a on the upper floor and the building unit 1a on the lower floor. Is provided.

  The piping box 6 is fire-finished to form a part of the fire-protection area screen 3. For example, the bottom wall 6a and the side walls 6b, 6c, 6d, 6e are made of a fire-proof material such as a cement board or a gypsum board. Is formed.

  Further, the piping box 6 is formed by joining end parts 61 and 61 and intermediate parts 62 and 62 as divided parts.

  That is, the end part 61 is a part that forms one end of the piping box 6 in the longitudinal direction, and surrounds the bottom plate 61a that forms a part of the bottom wall 6a of the piping box 6 and the bottom plate 61a. And side plates 61b, 61b, 61c that are erected in a substantially U shape when viewed from above.

  The intermediate part 62 has a cross-sectional view that can be continuously arranged on the bottom plate 61a and the side plates 61b and 61b of the end part 61 by a bottom plate 62a and a pair of side plates 62b and 62b provided upright at both ends of the bottom plate 62a. It is formed in a U shape.

  In the first embodiment, a substantially U-shaped piping hole 61d is formed in the side plate 61b of the end part 61 arranged on the front side.

  As shown in FIG. 1, a bathroom drain pipe 7 that drains water from the bathroom BR is routed in the piping box 6. The bathroom drain pipe 7 is connected to a connection pipe 71 orthogonal to the bathroom drain pipe 7 inside the pipe box 6. The connection pipe 71 is routed outside the pipe box 6 through the pipe hole 61d, and is connected to the drainage vertical pipe 8 piped in the vertical direction at the end of the building unit 2a.

  In the first embodiment, the non-combustible material (not shown) such as mortar, rock wool, or glass wool is filled in the piping box 6 between the inner periphery of the piping hole 61d and the outer periphery of the connecting piping 71. As a result, the fire protection screen 3 is structured to be uninterrupted.

  Further, in addition to the bathroom drain pipe 7, a drain drain pipe 72 for drain of a bathroom door and a laundry drain pipe 73 for a washing machine are connected to the connecting pipe 71 (see FIG. 5B).

  As shown in FIG. 2, the bathroom drain pipe 7 and the connecting pipe 71 are disposed at a lower level than the boundary BL between the upper floor building unit 2a and the lower floor building unit 1a. The lower position around the piping box 6 is filled with glass wool 9 for sound absorption.

  Further, in the piping space PS shown in FIG. 5, the floor box material 4 is installed above the piping box 6 as shown in FIG. 1 after the piping box 6 is installed. And in this floor board material 4, the fireproof board material 31 is laid in the range which does not overlap with the piping box 6 in an up-down direction, and the general part 3a of the fire protection area screen 3 is formed.

  It should be noted that, in the piping box 6, in the position where it does not overlap with the bus core unit BU as viewed from above, the general upper part of the side wall 6 c, 6 d, 6 e of the piping box 6 and the fire protection area screen 3 disposed below the floor board material 4. The fire plate material 31 is also provided between the portion 3a and the fire zone screen 3 is continuously formed without interruption.

Next, the construction method of the piping structure of the building unit of Embodiment 1 is demonstrated.
When building a unit building UH, first, each building unit 1a, 1b, 2a, 2b is manufactured in a factory, and then each building unit 1a, 1b, 2a, 2b is transported to a building site, and each building unit 1a is manufactured. , 1b, 2a, 2b are joined together.

  Therefore, the construction method of the building unit 2a to which the piping structure of the first embodiment is applied will be described separately for construction work in a factory and construction work in a building site, using FIG.

  In the factory, pillars 22 are erected on the floor structure 21 and a ceiling structure 23 is joined to the upper part of the pillars 22 to form a framework of the building unit 2a.

  And as shown to Fig.5 (a), the fire prevention board material 31 is laid on the small beam 214 of the floor structure 21, the low division part 3b of the floor fire prevention area screen 3 is formed, and this low division part 3b In this case, a piping space PS is left open.

  Furthermore, the bus core unit BU is installed on the low compartment 3b of the floor fire protection screen 3. Thereafter, the wall WO and the ceiling SL are attached to the building unit 2a (see FIG. 1).

  Next, at the construction site, piping such as a bathroom drain pipe 7 is performed as shown in FIG. Prior to performing this piping, the piping box 6 is first installed in the piping space PS.

  The procedure will be described. First, only the end part 61 shown in FIG. 6 is inserted under the bus core unit BU from the opening portion not covered by the bus core unit BU in the piping space PS.

  Next, the intermediate part 62 is arranged in front of the end part 61, and the intermediate part 62 is pushed under the bus core unit BU.

  Furthermore, another intermediate part 62 is arranged in front of the intermediate part 62, the intermediate part 62 is pushed under the bus core unit BU, and the end part 61 inserted first is brought into contact with the depth of the piping space PS. Let

  Finally, the end part 61 in which the piping hole 61d is formed is inserted into the piping space PS and is continued to the intermediate part 62, and the installation of the piping box 6 is completed.

In addition, the bathroom drain pipe 7 is routed in the pipe box 6 and necessary connections are made, and the connection pipe 71 is inserted into the pipe hole 61 d opened in the pipe box 6. Note that this insertion work may be performed before the end part 61 is put in, and finally the end part 61 may be put in.
Then, a non-combustible material is filled between the inner periphery of the piping hole 61d and the connecting piping 71, and the floor board material 4 is laid on the piping space PS.

  As described above, in the piping structure of the building unit according to the first embodiment, a part of the floor fire protection area screen 3 provided in the building unit 2a on the upper floor is below the floor fire protection area screen 3. A plumbing box 6 is formed, and a bathroom drain pipe 7 is routed to the plumbing box 6.

  Thus, only the piping box 6 that pipes the bathroom drain pipe 7 is lowered below the general part 3a of the floor fire protection screen 3 and the lower partition part 3b lower than that, and the boundary between the upper and lower building units 2a, 1a. The bathroom drain pipe 7 was also arranged at a position lower than the boundary BL so as to be arranged at a position lower than BL.

  For this reason, useless space can be eliminated as compared with arranging the floor fire protection screen 3 at a uniform height and routing the bathroom drain pipe 7 at a position higher than the boundary BL. Therefore, it is possible to efficiently route the bathroom drain pipe 7 at a low cost while securing the floor fire prevention area screen 3 in the limited space between the upper floor building unit 2a and the lower floor building unit 1a. It becomes.

  In addition, in the fire protection area screen 3, the portion where the bus core unit BU is installed is formed by the low partition portion 3b lower than the general portion 3a, so that the inside and outside of the bus core unit BU are flattened. Therefore, more effective use of the space can be achieved compared to a structure that is not flat.

  Furthermore, although the piping box 6 and the bathroom drain pipe 7 were arrange | positioned in the position lower than the boundary of the upper and lower building units 2a and 1a, these were installed and routed in the construction site. For this reason, when the building unit 2a is transported, these 6, 7 do not protrude downward from the building unit 2a, and there is no possibility that they will be damaged during transportation, and transportation is facilitated.

  In addition, since the piping box 6 is formed by joining the divided end parts 61 and 61 and the intermediate parts 62 and 62, the bus core unit is compared with a structure in which the piping box 6 is integrated from the beginning. It is easy to install in a narrow piping space PS under BU, and is excellent in workability. Moreover, it is possible to install the piping box 6 also in the place which cannot be inserted in the integral piping box 6, and the freedom degree of design of the piping box 6 and the wiring freedom degree of the bathroom drain pipe 7 become high.

  Further, since the piping hole 61d is formed in advance in the side plate 61b of the end part 61, the piping work on site is facilitated.

(Other embodiments)
Other embodiments will be described below. In the description of these other embodiments, the same or equivalent components as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and the description thereof is omitted.

(Embodiment 2)
FIG. 7 shows a piping box 206 used in the second embodiment. This piping box 206 is an example formed by one end part 61, two intermediate parts 62, 62, and a deformable non-combustible material 263 such as glass wool. A side wall 206d of the piping box 206 is formed of a non-combustible material 263.

  That is, at the time of construction, as shown in FIGS. 7A to 7C, the parts 61, 62, and 62 are joined side by side as in the first embodiment.

  Then, as shown in FIG. 7 (d), after routing the bathroom drain pipe 207, as shown in FIG. 7 (e), the opening part of the intermediate part 62 arranged at the end of the piping box 206 is shown. Then, the non-combustible material 263 is closed, and the installation of the piping box 206 and the wiring of the bathroom drain pipe 207 are completed.

  Note that the second embodiment is the same as the first embodiment except for the installation work of the piping box 206 described above, and a description thereof will be omitted.

  The first and second embodiments of the present invention have been described in detail above with reference to the drawings. However, the specific configuration is not limited to the first and second embodiments, and the gist of the present invention is described. Design changes that do not deviate are included in the present invention.

  For example, in Embodiments 1 and 2, as the divided parts constituting the piping boxes 6 and 206, the end part 61 and the intermediate part 62 divided into a plurality of parts in the longitudinal direction of the piping boxes 6 and 206 are shown. The shape of the parts is not limited to that shown in the first and second embodiments. That is, it may be subdivided from those shown in the first and second embodiments, or may be formed larger than those shown in the first and second embodiments. Further, the dividing direction is not limited to the shape shown in the first and second embodiments.

  In the first and second embodiments, the fire prevention area screen 3 and the piping boxes 6 and 206 have been shown to be fireproof finished with cement board, gypsum board, glass wool, etc., but these materials have fireproof properties. As long as it has, other materials may be used. For example, a metal plate, glass wool plate, mortar, rock wool, or the like may be used.

It is sectional drawing which shows the piping structure of the building unit of Embodiment 1 of this invention, Comprising: It has shown in the state cut | disconnected by the S1-S1 line | wire of FIG. It is sectional drawing which shows the piping structure of the building unit of Embodiment 1 of this invention, Comprising: It has shown in the state cut | disconnected by the S2-S2 line | wire of FIG. It is the schematic which shows the outline seen from the upper direction of the piping structure of the building unit of Embodiment 1 of this invention. It is sectional drawing which shows the principal part of the piping structure of the building unit of Embodiment 1 of this invention. It is explanatory drawing of the construction procedure of the piping structure of the building unit of Embodiment 1 of this invention, (a) is a perspective view which shows the construction state in a factory, (b) is a perspective view which shows the construction state in a construction site. is there. It is a perspective view which shows the piping box 6 used for the piping structure of the building unit of Embodiment 1 of this invention. It is explanatory drawing which shows the piping box 206 used for the piping structure of the building unit of Embodiment 2 of this invention, and its installation procedure, (a)-(d) shows a construction procedure in order, (e) The end of construction is shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1a, 1b Building unit 2a, 2b Building unit 3 Floor fire protection area screen 3a General part 3b Low division part 3c Plane part 6 Piping box 7 Bathroom drain pipe 8 Drain vertical pipe 61 End parts 62 Intermediate parts 206 Piping box 207 Bathroom drain pipe 263 Incombustible material BL Boundary BR Bathroom BU Bus core unit PS Piping space UH Unit building

Claims (6)

The upper floor building unit and the lower floor building unit are laminated, and a floor fire prevention area screen having fire resistance is provided between the upper floor building unit and the lower floor building unit. In the unit building, the piping structure of the building unit applied to the upper floor building unit provided with a bathroom,
A piping box is provided on a part of the floor fire zone screen, and is provided with a fireproof finish that falls downward and is continuous with the floor fire zone screen,
The piping structure of a building unit, wherein the drainage pipe for bathroom is routed in the piping box, and is further connected to a vertical drainage pipe through a side surface of the piping box. In the building unit in which the piping box is installed, a bus core unit that forms a bathroom is installed, and in the portion where the bus core unit is installed, the floor fire protection area screen does not install the bus core unit. Compared to the floor fire protection area screen in the general part,
The drain pipe is disposed at a position lower than the floor fire protection area screen disposed at a position lower than the general part,
2. The building unit piping structure according to claim 1, wherein the piping box projects downward from a boundary between an upper floor building unit and a lower floor building unit. 3.   The piping structure of the building unit according to claim 1 or 2, wherein the piping box is formed by combining a plurality of divided parts. The piping box is formed in a substantially constant width shape from the front side of the unit that does not overlap with the bus core unit when viewed from above, to the back side of the unit that overlaps with the bus core unit when viewed from above,
The divided parts include an end part that forms one end part in the longitudinal direction of the piping box, and an intermediate part that forms at least the middle of the piping box,
The end parts are a bottom plate that forms the bottom surface of the piping box, a side plate that forms a side wall of the piping box, and is disposed in a substantially U-shape when viewed from above surrounding three sides of the bottom plate, With
The intermediate part is formed in a substantially U-shaped cross section by a bottom plate that can be continuously arranged on a bottom wall and a side wall of the end part and side plates that are erected on both ends thereof. The piping structure of the building unit according to claim 3. It is the construction method of the piping structure of the building unit of any one of Claims 2-4,
In the construction process in the factory of the building unit, the floor fire zone screen is formed except for the piping box, and further, the bus core unit is installed above the floor fire zone screen,
A construction method characterized by forming the piping box in a construction process in a construction site where each building unit is coupled, and routing the drain pipe to the piping box and connecting the drain pipe to the drain vertical pipe. The construction method according to claim 5 for constructing a piping structure of the building unit according to claim 3 or claim 4,
In the construction process at the building site, each divided part is inserted below the installed bus core unit, and each divided part is joined to form a piping box.

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