JP2539987B2 - Floor structure of building unit - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor structure of a building unit, and can be used for a building such as a prefabricated house constructed by a unit construction method.

[0002]

BACKGROUND ART Today, as a prefabricated building, a unit building is known in which a plurality of box-shaped building units manufactured in advance in a factory are connected at a construction site. A building unit that constitutes such a unit building has a substantially box-shaped frame in which the upper and lower ends of the columns arranged at the four corners are connected by beams. A plurality of joists are bridged between the beams on the floor side of the frame, and a floor material is placed on these joists to form a floor.

By the way, the building unit includes electrical equipment,
It is equipped with gas facilities and water and sewer facilities.
The underfloor space of the building unit is an important equipment space for horizontally passing the piping and wiring for the above-mentioned equipment. Further, a beam below the frame surrounding the underfloor space is provided with a communication port for connecting with a pipe or the like of another adjacent building unit.

[0004]

However, in the conventional building unit, generally, the joists and the beams have substantially the same height, and the floor material is placed directly on the joists. Therefore, the size of the above-mentioned communication port is limited to the height dimension of the beam, and the vertical dimension of the underfloor space becomes narrow. Therefore,
The dimensions and slope of the pipes that can be installed in the underfloor space are limited to a narrow range, and the dimensions and routes of equipment extension members such as pipes are limited. There is no problem.

There is also a building unit in which the floor material is installed above the normal level to expand the underfloor space. In such a building unit, a member different from joist is installed to lift the floor material. Therefore, there is a problem that the manufacturing of the building unit becomes complicated by the work of installing the member.

An object of the present invention is to provide a floor structure of a building unit, which allows the dimensions and paths of the extension members for equipment such as piping to be set freely and is easy to manufacture.

[0007]

SUMMARY OF THE INVENTION The present invention is a floor structure of a building unit having a substantially box-shaped frame formed by joining columns and beams, wherein the floor beams between the floor beams constitute the frame. A plurality of substantially convex shaped joists having stepped portions are bridged above both end portions, and each upper end surface of these joists is projected above the upper surface of the beam, and on top of these upper end surfaces. A floor material is placed, and an extension member for equipment is passed under the floor material.

[0008]

In the present invention as described above, since the floor material is placed on the joists that are projected above the upper surface of the beam, a gap is formed between the beam and the floor material, and the height of the gap is increased. The underfloor space is enlarged upward by a certain size. The gap between the beam and the floor material can be used as a communication port for inserting a pipe or the like, and can be connected to a pipe or the like of another building unit through the communication port. Here, since the height dimension of the gap is not limited to the height dimension of the beam, etc., the gap and the underfloor space can be arbitrarily set according to the pipe passing through the inside, and the dimension of the extension member for equipment such as pipes can be set. You will be able to freely set the route, etc.

Further, the both ends of the substantially convex joist can be of the same shape as the ordinary joist, so that the fixing work to the beam can be performed like the ordinary joist. Moreover, since the floor material can be arranged above the normal level by installing only the joists, a separate member for lifting the floor material upward is not required, and the mounting work thereof is also omitted. Therefore, the manufacture of building units is simplified and they achieve the above objectives.

[0010]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a building unit 1 of this embodiment and a floor portion 10 thereof. The building unit 1 has a substantially box-shaped frame 4 formed by pillars 2 at four corners, a ceiling beam (not shown) connecting each of upper and lower ends of the pillars 2 and a floor beam 3.
(The upper part of the frame 4 is omitted in FIG. 1).

Here, the pillar 2 is made of a square tubular steel pipe, and the beam 3 is made of a so-called channel material having a U-shaped cross section.

The floor portion 10 includes a long side beam 3A and a short side beam 3B which are the floor beams 3 of the frame 4. Among them, a plurality of joists 11 are bridged between the long side beams 3A,
On these joists 11 floor material that will be the floor of building unit 1 12
Is placed and fixed.

The joist 11 is a strip-shaped long and slender rectangular face material, and is formed in a substantially convex shape having stepped portions above both ends of one long side of the long square shape. The notched end 13 of each joist 11 has the same shape as an ordinary joist, and is fitted and fixed in the long side beam 3A having a U-shaped cross section.

Here, the height of the joists 11 is made larger than the height of the beams 3A, 3B, and the upper end surface of the joists 11 projects upward by a predetermined height dimension H from the upper surfaces of the joists 3A, 3B. It is like this.

The floor material 12 is a face material made of particle board or the like, and its corners are cut out in accordance with the plan sectional shape of the pillar 2. Then, by placing the floor material 12 on the joist 11, as shown in FIG. 2, a gap 14 having a predetermined height dimension H is formed between the beams 3A and 3B, and the floor material 12 An underfloor space 15, which is a space for equipment below 12, is expanded upward by a predetermined height dimension H.

At this time, a pipe 6A, which is an extension member for equipment, is passed through the gap 14 and the underfloor space 15 of the building unit 1. Of these, the gap 14 serves as a communication port for inserting the pipe 6A and the like, and the pipe 6A is connected to the pipe 6B of another building unit 5 through the gap 14 (see FIG. 2). ).

According to this embodiment as described above, the floor material 12 is supported by the joist 11 having a substantially convex shape, and the floor material 12 is arranged above the upper surfaces of the beams 3A and 3B. , A gap 14 is formed between the floor material 12 and the floor material 12, and the underfloor space 15 is expanded upward. And the gap 14 is the piping of another building unit 5.
It serves as a contact point for 6B. Here, the height dimension H of the gap 14 is
Since the height dimensions of the beams 3A, 3B, etc. are not limited, the height dimension H of the clearance 14 and the underfloor space 15 can be arbitrarily set according to the piping passing through the inside, and the dimension of the extension member for equipment such as piping. You can freely set the route, etc.

Further, the end portion 13 of the joist 11 having a substantially convex shape can be formed in the same shape as a normal joist, so that the fixing work to the beam 3A can be performed like a normal joist, and only the joist 11 can be installed. Thus, the floor material 12 can be arranged above the normal level. Therefore, a separate member is not required for the upper arrangement of the floor material 12, and its mounting work is also omitted. Therefore, the manufacturing process is simplified and the building unit 1 can be easily manufactured.

It should be noted that the present invention is not limited to the above-mentioned one embodiment, but also includes modifications as shown below. That is, the members constituting the frame 4 of the building unit 1 are not limited to the square column 2 and the beam 3 having a U-shaped cross section, and may be, for example, a cylindrical column or a beam having an H-shaped cross section. The shape and material of the beam may be appropriately selected for implementation.

In the underfloor space 15 of the building unit 1,
In addition to water pipes for water and sewerage, for example, gas pipes, refrigerant pipes, conduit pipes for wiring, etc. may be installed, and the extension member for equipment is not limited to pipes, for example,
It may be a ventilation duct for air conditioning, an electric wire or cable duct for electric equipment, etc. In short, the underfloor space 15 may be used depending on the installed construction equipment.

Further, the joists are not limited to the joists 11 in which only the corners at both ends of the elongated quadrangle are cut out, and, for example, as shown in FIGS. 3 and 4, notches 1 are formed on the upper side or the lower side.
The joists 11A and 11B having 6, 17 may be used, or the joists 11C and 11D having one or a plurality of communicating holes 18 therein may be used as shown in FIGS. 5 and 6, in short, the outer peripheral shape is substantially convex. Any letter shape may be used. Here, joist 11A ~ 1
If 1D is installed in building unit 1, cutouts 16, 17 and communication holes
Since piping etc. can be passed through 18, the degree of freedom in setting the piping path etc. can be further expanded.

The floor 10 is not limited to one formed from a single flat surface, but may be, for example, one having unevenness formed on the upper surface. In short, the whole or a part of the floor surface is located above the beam 3. It should be arranged.

Further, the frame of the building unit is not limited to a so-called box-shaped frame having a ceiling beam, but may be, for example, a U-shaped frame in which the ceiling beam is omitted.

[0024]

As described above, according to the present invention, it is possible to freely set the size, route, etc. of the extension member for equipment, and to easily manufacture the building unit.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a floor portion according to an embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view showing a main part of the embodiment.

FIG. 3 is a front view showing a modified example of joists of the present invention.

FIG. 4 is a front view showing another modification of the joist of the present invention.

FIG. 5 is a front view showing still another modification of the joist according to the present invention.

FIG. 6 is a front view showing still another modified example of the joist of the present invention.

[Explanation of symbols]

 1 Building unit 2 Pillars 3 Beams 4 Frames 6A, 6B Piping as an extension member for equipment 10 Floor 11, 11A to 11D joists 12 Floor materials

Claims (1)

(57) [Claims] 1. A floor structure of a building unit having a substantially box-shaped frame formed by joining columns and beams, wherein a stepped portion is provided above both end portions between floor beams constituting the frame. A plurality of substantially convex shaped joists having are bridged, each upper end surface of these joists is projected above the upper surface of the beam, and a floor material is placed on these upper end surfaces, and ,
A floor structure of a building unit, wherein an extension member for equipment is passed under the floor material.