JPH08270025A - Piping structure of building unit - Google Patents

Abstract

PURPOSE: To provide a piping structure of a building unit which is effective against the shearing force to be generated in the beam, even when heavy water section equipments are installed on the beam in which an opening for inserting pipes is formed. CONSTITUTION: A circular opening 33 in which a drain pipe 22, a water supply pipe 23, and a hot water supply pipe 24 are inserted, is formed at the longitudinal and nearly central part of a reinforcing beam 16 laid between longer side lower beams 12 of a building unit 10. Even if a heavy bath unit 21 is installed on the reinforcing beam 16 through a frame base 20, the shearing force at the position where the opening 33 of the reinforcing beam 16 is formed, is extremely small.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a piping structure of a building unit, and can be used in a unit type building constructed by combining a plurality of building units.

[0002]

2. Description of the Related Art Conventionally, a unit type building has been built in which a plurality of building units produced in advance in a factory are combined at a construction site. This unit type building is a so-called industrialized building that is built for the purpose of shortening the construction period and reducing the construction cost. Therefore, when providing a bathroom in such a unit-type building, a bath unit preliminarily finished to a predetermined size is incorporated into a building unit that constitutes the unit-type building. In addition, such a building unit can withstand heavy water equipment such as a bath unit,
A reinforcing beam is provided in the underfloor space, and a water supply facility is placed on this reinforcing beam.

On the other hand, in the building unit, it is common practice to use the underfloor space for piping. Therefore, when connecting a pipe to the water supply facility as described above, it is necessary to form an opening for passing the pipe in the reinforcement beam in order to prevent the pipe from being blocked by the reinforcement beam that crosses the underfloor space. .

[0004]

However, since a large weight of water supply equipment is placed on this reinforcing beam, a load due to the weight of the water supply equipment is applied to the reinforcing beam, which results in reinforcement. A large shearing force is generated on the beam, and depending on the position of the opening formed in the reinforcing beam, the shearing force generated at the position where this opening is formed may cause anxiety about the strength of the reinforcing beam. It was desired to form the opening at the optimum position of the reinforcing beam.

The object of the present invention is effective against the shearing force generated in the reinforcing beam even when a large weight of the water supply equipment is placed on the reinforcing beam in which the opening for passing the pipe is formed. To provide a piping structure for a building unit.

[0006]

A piping structure of a building unit according to the present invention is constructed such that the building unit is provided with a reinforcing beam provided on a floor, and a plumbing fixture incorporated inside the building unit is provided. A piping structure of a building unit placed on a reinforcing beam, wherein an opening is formed at a substantially central portion in the longitudinal direction of the reinforcing beam, and a pipe connected to a water supply facility passes through this opening. It is characterized by being Here, the approximate center includes the true center.

Further, it is desirable that the building unit has a plurality of metal joists spanning the pipe in a crossing direction, and the piping passes under these metal joists with a water gradient.

Further, it is desirable that the opening formed in the reinforcing beam is circular. In this case, the circular shape includes an elliptical shape.

Further, the water supply facility is a bath unit, and the pipes are a drain pipe, a water supply pipe, and a hot water supply pipe. Note that the water supply equipment may be, for example, a system kitchen, a wash basin, etc., in addition to the bath unit.

[0010]

In the present invention as described above, it is considered that the reinforcing beam receives an evenly distributed load over the entire length due to the weight of the water supply facility, so that the generation of shearing force is suppressed at the center of the reinforcing beam. Therefore, by forming the opening at the true center of the longitudinal direction of the reinforcing beam, the generation of shearing force at the position where the opening is formed is completely suppressed, and when the opening is formed close to the center. However, the generation of shearing force can be suppressed to an extremely low level. For this reason, the reinforcing beam is effective against the shearing force even when a heavy-weight water supply facility is placed.

In the above, when a plurality of metal joists are provided across the pipe in a crossing direction and the pipe is passed under the metal joists with a water gradient, the floor surface is attached to the metal joists. By laying the material, the floor of the living room adjacent to the water supply facility will be formed, and if these metal joists are made of steel pipe, even if a steel pipe with a small cross-sectional size is used Since the strength as joists is maintained, a wide underfloor space is secured in the vertical direction, and a reliable water gradient in the pipe can be obtained.

Further, when the opening formed in the reinforcing beam is formed into a circular shape, stress concentration does not occur in the opening, so that the strength of the reinforcing beam can be secured more reliably.

When the water supply facility is a bath unit and the pipes are a drain pipe, a water supply pipe, and a hot water supply pipe,
The bath unit is placed securely, and the drainage pipe, water supply pipe, and hot water supply pipe can be reliably passed through.

[0014]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an overall outline of a building unit 10 to which the piping structure according to this embodiment is applied. The building unit 10 includes four columns 11 erected at four corners, two long-side lower beams 12 and two short-side lower beams 13 laid between the lower ends of the four columns 11. Two long-side upper beams 14 and two short-side upper beams 15 bridged between the upper ends of the four columns 11.
And a reinforcing beam 16 spanned between the long-side lower beams 12, and in a region between the reinforcing beam 16 and one short-side lower beam 13, a plurality of the long-side lower beams 12 are spanned. Metal joist 17
It is comprised including.

Further, in the region sandwiched by the other short-side lower beam 13 and the reinforcing beam 16, each long-side lower beam 1 facing this region.
Reinforcing members 18, 19 are fixedly provided on a part of 2 and the lower side lower beam 13. That is, each of the long-side lower beam 12 and the short-side lower beam 13 is also a reinforcing beam reinforced by the reinforcing members 18 and 19. A pedestal 20 is provided in this area, as indicated by a two-dot chain line in the figure, and a basin 21 which is a water supply facility is supported by the gantry 20. ing.

Further, below the metal joist 17, a drain pipe 22 which is a pipe, and a water supply pipe 23 and a hot water supply pipe 24 having a smaller diameter than the drain pipe 22 pass in parallel with each other.
One ends of the drain pipe 22, the water supply pipe 23, and the hot water supply pipe 24 respectively extend below the pedestal 20 and rise in the vertical direction, and the drain pipe 22 is connected to the lower surface of the bath unit 21, and the water supply pipe 23, The hot water supply pipe 24 is connected to a faucet 25 provided in the bath unit 21. On the other hand, the other ends of the drainage pipe 22, the water supply pipe 23, and the hot water supply pipe 24 communicate with a drain groove, a water heater, and the like not shown.

As shown in FIG. 2, the short-side lower beam 13 and the reinforcing member 19 are each made of a channel material, and their opening sides are fixed so as to face each other and fixed, and the vertical section is a closed section. Although not shown here, each long-side lower beam and the reinforcing member fixed to each long-side lower beam are also made of the same channel material and have the same closed cross section. The reinforcing beam 16 is also made of a channel material, and the metal joist 17 is made of a square steel pipe.

The frame 20 includes a reinforcing member 19 and a reinforcing beam 1.
6, a connecting member 26 having an L-shaped cross-section, which is fixed to the upper part of 6 along these longitudinal directions by welding or the like;
A suspension member 2 having an L-shaped cross section, which is fixed to 6 downwardly.
7 and a support frame 28 bridged between the lower ends of these suspension members 27, and the connecting member 26 on the side of the reinforcing member 19 has the same thickness dimension as the wall thickness of the short side lower beam 13. It is fixedly installed via a level adjusting plate 29.

The drain pipe 22, the water supply pipe 23, and the hot water supply pipe 24 are
Each of them penetrates the reinforcing beam 16 and has a drain groove (not shown) and a water gradient that decreases toward the water heater side. Below the metal joists 17 that are bridged in the intersecting direction with respect to these pipes, Passing through. Here, 30 is the drain pipe 2
2, a holding metal fitting for holding the water supply pipe 23 and the hot water supply pipe 24, which is attached to the lower portion of the metal joist 17 by bolting or the like. Further, 31 is a reinforcing member 16 and each metal joist 17
The floor surface member 31 is provided over the floor, and the floor surface material 31 forms a floor adjacent to the bath unit 21, such as a dressing room.

As shown in FIG. 3, the reinforcing beam 16 is fixed to the bracket 32 fixed inside the long-side lower beam 12 by screwing a bolt and a nut.
At the center of 6, a drainage pipe 22, a water supply pipe 23, and a hot water supply pipe 24
Three circular openings 33 are formed to pass through. Also,
The suspension member 27 and the support frame 28 described above are provided in plural along the longitudinal direction of the connecting member 26.

In this embodiment, the opening 33 is first formed in the reinforcing member 16 in advance. The skeleton of the building unit 10 including the reinforcing member 16 is assembled on the production line of the building unit of the factory. At this time, a separately manufactured frame 20 is attached to the floor portion.

Next, the bus unit 21 is placed on the upper part of the pedestal 20 by hanging the bus unit 21 from above the frame with a crane. After that, drain pipe 22, water supply pipe 23,
By passing the hot water supply pipe 24 into the underfloor space and laying the floor covering 31 on the metal joist 17, the building unit 10 having the bath unit 21 incorporated therein is completed.

Next, the shearing force F acting on the reinforcing beam 16 will be described with reference to the drawings. In this embodiment, FIG.
As shown in FIG.
If these fulcrums are A and B, respectively, it is considered that the weight of the bus unit 21 bears an evenly distributed load w over the entire length L of the reinforcing beam 16.
As a result, since the total load is wL, the reaction forces R1 and R2 of the fulcrums A and B at both ends are obtained by the equation 1, and the shearing force F acting on the arbitrary cross section at the distance x from the left end A is obtained by the equation 2 Required by.

[0024]

## EQU1 ## R1 = R2 = wL / 2

[0025]

(2) F = (L / 2−x) w

Based on the above, the central position (x
= L / 2), F = 0, the generation of shearing force is suppressed, and even at a position close to the center of the reinforcing beam 16,
Shear can be kept extremely small.

According to this embodiment, the following effects can be obtained. That is, an opening 33 is formed in the substantially central portion of the reinforcing beam 16 in the longitudinal direction, and the drainage pipe 22, the water supply pipe 23, and the hot water supply pipe 24 are passed through the opening 33. The shearing force at the position where 33 is formed can be made extremely small, and the reinforcing beam 16 can be made effective against the shearing force generated when the heavy weight bus unit 21 is placed.

Further, since a plurality of metal joists 17 are bridged between the long side lower beams 12 of the building unit 10, by laying a floor surface material 31 on these metal joists 17,
A floor such as a dressing room adjacent to the bus unit 21 can be formed.

Since the metal joists 17 above the drainage pipe 22, the water supply pipe 23, and the hot water supply pipe 24 are formed of square steel pipes, even if the cross-sectional size of these metal joists 17 is reduced, the strength of the joist is increased. Can be maintained. As a result, a wide underfloor space can be secured in the vertical direction, and even if these metal joists 17 are laid across in an intersecting direction with respect to each pipe, a reliable water gradient of the drain pipe 22, the water supply pipe 23, and the hot water supply pipe 24 can be obtained. Can be obtained.

Further, the opening 3 formed in the reinforcing beam 16
Since 3 is circular, stress concentration does not occur in the opening 33, and the strength of the reinforcing beam 16 can be more reliably ensured.

Further, since the strength of the reinforcing beam 16 is reliably ensured, the bath unit can be reliably placed, and the drainage pipe 22, the water supply pipe 23, and the hot water supply pipe 24 can also be reliably passed through.

The present invention is not limited to the above-described embodiments, but includes other configurations and the like that can achieve the object of the present invention, and the following modifications and the like are also included in the present invention. For example, in the above embodiment, the reinforcing beam 16 has three openings 33.
However, the number of openings according to the present invention is not particularly limited to three, and may be an appropriate number when implementing the invention.

In the above embodiment, the two long-side lower beams 1 are used.
Reinforcing members 18 and 19 are fixedly attached to 2 and one short-side lower beam 13, and these long and short lower beams 12 and 13 also serve as reinforcing beams. It is not necessary to serve as both the long-side beam and the short-side lower beam 12, for example, instead of fixing the reinforcing member 19 to the short-side lower beam 12, another reinforcing beam similar to the reinforcing beam 16 is bridged over, and the gantry 20 May be placed.

In the above embodiment, the drainage pipe 22, the water supply pipe 23, and the hot water supply pipe 24 pass through the opening 33 formed in the reinforcing beam 16, but the opening is also a reinforcing beam. 12, the reinforcing member 18, or the short side lower beam 13 and the reinforcing member 19, respectively,
The drainage pipe 22, the water supply pipe 23, and the hot water supply pipe 24 may be passed in directions different from those of the above-described embodiment.

[0035]

As described above, according to the present invention, since the opening through which the pipe is inserted is formed substantially at the center in the longitudinal direction of the reinforcing beam, shearing force is generated at the position where the opening is formed. Can be suppressed completely or extremely small, and the reinforcing beam can be effective against shearing force.

Further, since a plurality of metal joists are laid across the building unit, by laying a flooring material on these metal joists, the floor of the living space adjacent to the water supply facility can be formed. , By using a metal joist as a metal joist, it is possible to secure a wide underfloor space by using a thing with a small cross-sectional dimension.Thus, even if these metal joists are laid across the pipe in the cross direction, The effect is that a reliable water gradient can be obtained.

When the opening formed in the reinforcing beam is circular, stress concentration does not occur in the opening, so that the strength of the reinforcing beam can be secured more reliably.

Further, when the water supply facility is a bath unit and the pipes are a drainage pipe, a water supply pipe, and a hot water supply pipe, the strength of the reinforcing beam is ensured securely, so There is an effect that it can be placed, and drainage pipes, water supply pipes, and hot water supply pipes can be reliably passed through.

[Brief description of drawings]

FIG. 1 is a perspective view showing an overall outline of a building unit to which a piping structure according to an embodiment of the present invention is applied.

FIG. 2 is a sectional view taken along line II-II in FIG.

3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a schematic diagram showing a shearing force acting on a reinforcing beam.

[Explanation of symbols]

 10 Building Units 12 Long-side Bottom Beams that are Reinforcement Beams 13 Short-side Bottom Beams that are Reinforcement Beams 16 Reinforcement Beams 17 Metal joists 21 Bath Units that are water supply facilities 22 Drain pipes that are pipes 23 Water Supply Pipes that are pipes 24 Pipes Hot water supply pipe 33 opening

Claims (4)

[Claims] 1. A piping structure of a building unit, wherein a building unit is formed with a reinforcing beam provided on a floor, and a water supply facility built in the inside of the building unit is placed on the reinforcing beam. An opening is formed in a substantially central portion in the longitudinal direction of the reinforcing beam, and a pipe connected to the water supply facility passes through the opening. . 2. The piping structure for a building unit according to claim 1, wherein the building unit has a plurality of metal joists spanning in a cross direction with respect to the pipe, and the pipe has a water gradient. The piping structure of the building unit is characterized in that it passes under these metal joists. 3. The piping structure for a building unit according to claim 1, wherein the opening formed in the reinforcing beam is circular. 4. The piping structure for a building unit according to claim 1, wherein the water supply facility is a bath unit, and the pipes are a drainage pipe, a water supply pipe, and a hot water supply pipe. The piping structure of the building unit.