JP3224179B2 - Underfloor piping structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underfloor piping structure in which piping is arranged below a floor member.

[0002]

BACKGROUND ART Buildings are constructed by various methods such as a conventional method, a panel method or a unit method. Of these, the unit construction method is to reduce the construction period at the construction site by manufacturing multiple building units at the factory, where the outer wall material and the interior material are attached to the framework formed by the upper beam, the lower beam, and the column, After transporting these building units to the construction site, the unit type building is constructed by combining front and rear, left and right, and up and down. This unit-type building also has a floor-floor piping structure in which a floor member is arranged on a plurality of juxtaposed joists and a pipe is arranged below the floor member, similarly to a building by another construction method.

[0003] In this underfloor piping structure, conventionally, the joist is arranged so as not to interfere with the mounting position of the piping in order to prevent the joist from hindering the installation of the piping. Since the size and the mounting position of the pipe are different depending on the type, the mounting position of the joist is conventionally changed according to the type of the pipe. For example, in the unit construction method,
A plurality of joists are bridged between two lower beams which are arranged opposite to each other, and the mounting positions of these joists differ depending on the presence / absence of a pipe, the size of the pipe, and the mounting position.

[0004]

In the above-mentioned prior art, since the mounting position of the joist is changed according to the type and size of the pipe, there is a problem that the mounting work of the joist becomes complicated. For this reason, in particular, in the case of the building by the unit construction method, there is a problem that the standardization of the building unit cannot be achieved and the manufacturing efficiency of the building unit does not improve.

[0005] It is an object of the present invention to provide an underfloor piping structure that makes it easy to attach joists regardless of the type, size, or mounting position of the piping.

[0006]

SUMMARY OF THE INVENTION Therefore, the present invention standardizes the mounting position of a joist regardless of the size and mounting position of a pipe, and arranges the piping at a joist-deficient portion where the joist is lost, and The above object is achieved by providing a reinforcing floor member in the portion. Specifically, the underfloor piping structure of the present invention is an underfloor piping structure in which a floor member is disposed on a plurality of juxtaposed juxtapositions and a pipe is disposed below the floor member, and constitutes a unit-type building. Building units
It is applied under the floor, the juxtaposed interval of the joists is an equal interval, the position where the pipe is arranged is a joist missing part where the joists are missing, and the upper surface is A reinforcing floor member that is the same or substantially the same as the upper surface of the floor member and has a thickness greater than that of the floor member is provided ,
The reinforcing floor member has both sides at both sides of the joist defect.
It is characterized by being supported by side joists .

[0007] In this case, both sides of the joists before Symbol joists defect may be made of metal. Further, the reinforcing floor member may be formed of a single plate material, or a first plate material whose both lower surfaces are supported by joists on both sides of the joist defect portion, and a first plate material of the first plate material. have good even being formed from a plurality of plate members of the second plate member joined to the lower surface.

[0008]

A plurality of joists are arranged side by side at equal intervals, and a floor member is arranged on these joists. At this time, the joist is not arranged above the portion where the pipe is to be arranged, but the joist is removed to form a joist defect, and the pipe is attached to a predetermined position from the joist defect. Thereafter, the joist defect is closed with a reinforcing floor member. In this state, since the upper surface of the reinforcing floor member is the same or substantially the same as the upper surface of the floor member, there is no step between the reinforcing floor member and the floor member adjacent to the reinforcing floor member.

[0009] Moreover, when supporting the both side portions of the reinforcing floor member on both sides of joists of the joists defect, both side portions of the reinforcing floor member secured to the joists with nails or the like. In addition , in order to apply the underfloor piping structure to building units constituting a unit-type building, the above-mentioned work is performed at the time of manufacturing the building units. That is, in a factory, a plurality of joists are juxtaposed at equal intervals between two opposing long-side lower beams, and a joist-deficient portion is formed. 2
Two end panels composed of short beams and two pillars are attached, and a ceiling panel is attached to the upper end of these end panels to form a skeleton, and an outer wall material and an interior material are attached to the skeleton. Further, a floor member is arranged on the joist and a pipe is arranged at the joist defect, and then the joist defect is closed with a reinforcing floor member. After the building unit thus manufactured is transported to the construction site, it is placed on a foundation to construct a unit-type building.

[0010]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a framework of a building unit to which a pipe underfloor structure according to a first embodiment of the present invention is applied. In FIG. 1, a substantially box-shaped frame 7 is formed from a long beam 2, a short beam 3, a column 4, a long beam 5 and a short beam 6 in the building unit 1. It has a structure with no external wall material or interior material attached. A plurality of building units 1 having this structure are combined in a front-rear, left-right, up-down and up-and-down manner on a foundation (not shown) to form a unit building. Two long-side lower beams 5 are arranged to face each other, and a plurality of joists 8A and 8B are juxtaposed so as to span the long-side lower beams 5. These joists 8A and 8B are arranged at equal intervals of the dimension P, and a joist defect 9 is formed in a part thereof. The joist deficient portion 9 is formed by losing one joist, and has a width of 2P. The joists 8A on both sides of the joist defect 9 are made of metal, and the other joists 8B are made of wood.

FIG. 2 shows the underfloor piping structure of the first embodiment. In FIG. 2, on both sides of the joist defect 9, floor members 10 are arranged on joists 8A and 8B, respectively. The floor member 10 is constituted by a particle board of thickness D _1, joists 8A with nails, and is fixed to 8B. The joist defect 9 is provided with a reinforcing floor member 11. The reinforcing floor member 11 includes a first plate member 12 whose lower surfaces on both sides are supported by the joists 8A on both sides of the joist defect 9, and a second plate member 13 joined to the lower surface of the first plate member 12.
It is formed from a single plate. These first and second plate members 12 and 13 are each formed of a particle board, and a floor finishing material (for example, a flooring material) (not shown) is arranged on the first plate member 12 and the floor member 10. .

The thickness of the first plate 12 is the same as that of the floor member 10.
Is D _1, the thickness of the second plate 13 is D _2. Therefore,
The upper surface of the reinforcing floor member 11 is the same as the upper surface of the floor member 10, and the entire thickness thereof is (D ₁ + D ₂ ), which is larger than the floor member 10. The upper surface of the reinforcing floor member 11 does not necessarily have to be completely the same as the upper surface of the floor member 10, but may be substantially the same. The term “substantially the same” refers to a range where there is substantially no step between the reinforcing floor member 11 and the floor member 10.
Further, in FIG. 2, the first plate member 12 and the second plate member 13 are each composed of one plate member.
Either or both of 2 and 13 may be composed of a plurality of plate members.

The joists 8A arranged on both sides of the joist defect 9
Are formed to have a U-shaped cross section, and metal brackets 14 made of a long angle material are fixed to their opposing sides. These brackets 14 are structured to support both lower surfaces of the second plate 13. The reinforcing floor member 11 is fixed to the joist 8A and the bracket 14 with nails. A plurality of pipes 15 for hot water supply, drainage, and the like are arranged below the reinforcing floor member 11. A part of these pipes 15 is led into the interior of the building unit 1 through a hole 11A (see FIG. 1) formed in the reinforcing floor member 11, and the remaining part is another building unit (not shown). Zu) is guided inside.

In order to construct the above-mentioned underfloor piping structure, first, a building unit 1 is manufactured in a factory. Therefore, a plurality of joists 8A and 8B are juxtaposed at equal intervals (dimension P) between the two long side lower beams 5 facing each other, and the two joists 8A are separated by a dimension 2P to remove the joist defect. 9 is formed. Here, the bracket 14 is fixed to the joist 8A in advance. Further, a short panel is formed from the short side lower beam 6, the short side upper beam 3, and the column 4, and a ceiling panel is formed from the long side upper beam 2, a not-shown ceiling beam, and the like. A wife panel is attached to the end of the two long side lower beams 5, and a ceiling panel is attached to the upper end of the wife panel to form a framework 7, and an outer wall material and an interior material (not shown) are attached to the framework 7. Further, a pipe 15 is attached from the joist defect 9, the floor member 10 is arranged on the joist 8A, 8B, and the floor member 10 is nailed to the joist 8A, 8B.
Fixed to. The joist defect 9 is closed with a reinforcing floor member 11,
The reinforcing floor member 11 is fixed to the joist 8A and the bracket 14 with nails. Further, the reinforcing floor member 11 and the floor member 1
Place floor finish on top of zero. After transporting the building unit 1 manufactured in this way to a construction site, it is placed on a foundation to construct a unit-type building.

As described above, according to the first embodiment, the joists 8A, 8
B are arranged at equal intervals (dimension P), and the arrangement position of the pipe 15 is a joist missing portion 9 in which the joists 8A and 8B are missing.
Since the joist deficient portion 9 is provided with the reinforcing floor member 11 whose upper surface is the same as or substantially the same as the upper surface of the floor member 10 and whose thickness is larger than that of the floor member 10, the mounting positions of the joists 8A and 8B are changed. The work of mounting the joists 8A and 8B is standardized and is easy regardless of the type, size or mounting position of the pipe 15. In other words, the pipe 15 having a large diameter can be passed. In addition, in the first embodiment, since both sides of the reinforcing floor member 11 are supported by the joists 8A on both sides of the joist defect 9, only the sides of the reinforcing floor member 11 are nailed to the joist 8A. The reinforcing floor member 11 can be easily attached.

Furthermore, since the joists 8A on both sides of the joist defect 9 are made of metal, the joists 8A have a large strength and the joists 8A
Thus, the reinforcing floor member 11 can be reliably supported. In addition, since the joist 8A is provided with the bracket 14 for supporting the reinforcing floor member 11, the reinforcing floor member 11 can be reliably supported from this point as well. Further, the reinforcing floor member 11 includes a first plate member 12 having both lower surfaces supported by the joists 8A on both sides of the joist defect portion 9, and a second plate member 13 joined to the lower surface of the first plate member 12. , The rigidity of the reinforcing floor member 11 can be increased.
Furthermore, since the underfloor piping structure is applied to the underfloor of the building unit 1 constituting the unit building, the building unit 1 can be standardized regardless of the mounting position of the piping 15 and the like, and the building unit 1 can be manufactured efficiently.

Next, a second embodiment of the present invention will be described. The second embodiment is different from the first embodiment in the configuration of the reinforcing floor member, and the other configurations are the same as the first embodiment. FIG. 3 shows the underfloor piping structure of the second embodiment. In FIG. 3, the same components as those in FIG. In FIG. 3, the reinforcing floor member 21 of the second embodiment is formed from a single plate, and this plate is formed of a particle board having a thickness (D ₁ + D ₂ ). At both ends of the reinforcing floor member 21, cutouts 21A with which the joists 8A abut are formed. This notch 2
The thickness of 1A is D _2, thus the thickness of both end portions of the reinforcing floor member 21 is set to D _1.

The method of constructing the underfloor piping structure of the second embodiment having this configuration is the same as the method of constructing the underfloor piping structure of the first embodiment. Therefore, according to the second embodiment, the following effects can be obtained in addition to the effects similar to the effects of the first embodiment. That is, since the reinforcing floor member 21 is formed from a single plate material, when forming the reinforcing floor member 21, the operation of joining a plurality of plate materials is not required.

[0019] In the present invention, the present invention is not limited to the configuration of the embodiment, Ru der those containing modified example below, if the purpose within the range of of the present invention can be achieved.

For example , according to the present invention, the bracket 14 may be removed and the reinforcing floor members 11 and 21 may be directly supported by the joists 8A.

In the first and second embodiments, one joist is deleted to form a joist defect 9 having a width 2P. However, in the present invention, two or more joists are deleted. To form a joist defect having a width dimension of 3P or more. Further, the joists 8A on both sides of the joist defect 9 were made of metal, and the joists 8B other than this joist were made of wood. However, all the joists 8A and 8B were made of metal or wooden,
Alternatively, the joist 8A may be made of wood and the joist 8B may be made of metal.

[0022]

As described above, according to the present invention, the juxtaposed intervals of the joists are equal, and the piping is disposed at the joist-deleted portion where the joists are lost. The same or almost the same as the upper surface of the floor, the thickness is thicker than the floor member for the reinforcing floor member is provided, the mounting position of the joist is standardized, regardless of the type, size or mounting position of the pipe Work becomes easy. Moreover, the aforementioned structure
In addition to the above, since both sides of the reinforcing floor member are supported by the joists on both sides of the joist defect , the reinforcing floor member can be easily attached. In addition, in addition to the above configuration
The underfloor piping structure is
Because it is configured to be applied under the floor of a building unit,
Manufacturing can be performed efficiently. Furthermore, if the joists on both sides of the joist defect are made of metal, the joists can reliably support the reinforcing floor member. Further, the reinforcing floor member is formed of a plurality of plate materials including a first plate material whose lower surfaces on both sides are supported by joists on both sides of the joist defect portion, and a second plate material joined to the lower surface of the first plate material. If it is formed, the rigidity of the reinforcing floor member can be increased. Moreover, by forming the reinforcing floor member from a single plate material, that Do unnecessary operation of joining a plurality of plate members.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a framework of a building unit to which a piping underfloor structure according to a first embodiment of the present invention is applied.

FIG. 2 is a sectional view showing the under-pipe structure.

FIG. 3 is a view similar to FIG. 2, but showing a pipe underfloor structure according to a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Building unit 8A, 8B Joist 9 Joist missing part 10 Floor member 11, 21 Reinforcement floor member 12 1st board 13 Second board 14 Bracket 15 Piping

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E04B 5/48

Claims (4)

(57) [Claims] An underfloor piping structure in which a floor member is arranged on a plurality of juxtaposed juxtaposed members and a pipe is arranged below the floor member, the structure being provided under a floor of a building unit constituting a unit-type building.
It is to be applied, the juxtaposed interval of the joists is an equal interval, the position where the pipe is arranged is a joist missing part where the joists are missing, and in this joist missing part, the upper surface of the floor member A reinforcing floor member which is the same as or substantially the same as the upper surface and has a thickness greater than that of the floor member is provided.
The floor member for flooring has both sides of the joist deficient part.
Underfloor piping structure characterized by being supported by . 2. The underfloor piping structure according to claim 1 ,
The underfloor piping structure, wherein joists on both sides of the joist defect portion are made of metal. 3. The underfloor piping structure according to claim 1 or 2 , wherein the reinforcing floor member is formed of a single plate. 4. The underfloor piping structure according to claim 1 or 2 , wherein the reinforcing floor member has a first plate member whose lower surfaces on both sides are supported by joists on both sides of the joist deficient portion, and An underfloor piping structure characterized by being formed from a plurality of plate members with a second plate member joined to a lower surface of the plate member.