JPH04198539A - Floor structural-body - Google Patents

Abstract

PURPOSE:To enable floor joists to be stably mounted on floor girders by jointing floor joist fitting devices having the floor joist fitting surfaces of the roughly same levels as the upper surface levels of floor beams, to the internal surface sides of external frame bodies formed with the floor girders, and by mounting the end sections of the respective floor joists on the floor joist fitting devices. CONSTITUTION:A floor structural-body is composed of a plurality of floor joists 23 arranged to be mounted on frame bodies formed with floor girders 20 and floor beams 21. Then, floor joist fitting devices 30 are composed of channel shape steel plate connecting pieces 31, and L-shaped steel plate fitting- pieces 32 for forming floor joist fitting surfaces 30A, and are extended in the longitudinal directions of the floor girders 20 so that the upper surface levels of the floor beams 21 may be roughly set to be the same levels as the levels of the floor joist fitting surfaces 30A. After that, the end sections of the floor joists 23 are mounted to be supported on the fitting surfaces 30A of the floor joist fitting devices 30. As a result, the floor joists 25 can be mounted on the floor girders 20 in a stable state.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a floor structure suitable for constructing a building unit or the like.

[Prior Art] Conventionally, there are floor structures constituting building units and the like as described in Japanese Patent Application Laid-Open No. 62-59746. In this floor structure, an outer frame is formed by a plurality of floor girders, and each of the plurality of floor girders arranged in parallel is placed between the opposing floor girders at the two-sided level of the floor girder or at the floor girder. It is constructed so that the floor level is lower than the top level of the girder, and a plurality of wooden floor joists arranged in parallel are mounted orthogonally on the two sides of each floor girder.

[Problems to be Solved by the Invention] However, in the conventional floor structure described above, the floor joists are set at the upper surface level of the floor beam on which they are mounted, or at a lower level than the upper surface level of the floor girder. Because of this, the end of each floor joist is cut out by an amount corresponding to the level difference between them, and is placed on the two sides of the floor girder.

For this reason, it is difficult to make the most of the cross-sectional performance of the floor joists, and when placing heavy objects such as bookshelves or pianos, avoid cracking around the above-mentioned notch at the end of the floor joists. In order to prevent this, it would be unreasonable to use floor joists with a large cross section over the entire length.

An object of the present invention is to stably support a floor joist with respect to a floor girder.

[Means for Solving the Problems] The present invention according to claim 1 forms an outer frame by a plurality of floor girders, and connects each of the plurality of floor girders arranged in parallel between the opposing floor girders. , a plurality of wooden floor joists arranged in parallel to each other are placed on the upper surface of each floor beam, and each of the wooden floor joists is placed at the top surface level of the floor beam or at a level lower than the top surface of the floor girder. In a floor structure configured with orthogonal mounting, a number of floor joist fittings are attached to the inner surface of the floor girder, each having a floor joist mounting surface at approximately the same level as the -L surface level of the floor girder. The end of the floor joist is mounted on the floor joist mounting surface of the floor joist fixture indicated by -F.

The present invention according to claim 2 is the invention according to claim 1, further comprising: the floor joist being made of channel steel; and the floor joist fixture or a connecting piece made of channel steel; It consists of a mounting piece that is joined and has a floor joist mounting surface, and is joined to the upper flange of the connecting piece or the upper flange of the floor joist, and is connected to the lower flange of the connecting piece or the lower flange of the floor joist. It is something.

The present invention according to claim 3 is the present invention according to claim 1 or 2, further comprising: the floor joist fixture extending in the longitudinal direction of the floor girder, and mounting at the ends of the plurality of floor joists. It is designed to have a number of floor joists that can be used.

[Function] The present invention as set forth in claim 1 has the following function (2).

■The floor joist fixture installed on the floor girder has a floor joist attachment surface that is approximately at the same level as the top surface of the floor girder. For this reason, the ends of the floor joists are mounted on the floor joist fixtures provided on the floor joists, without any notches being made in the middle part on which they are mounted.

Therefore, even when a heavy object is placed on the floor joist, the floor joist is stably supported on the floor girder without cracking around the end notch.

According to the present invention as set forth in claim 2, there is the following effect (2).

■The floor girder has the upper and lower flanges of the connecting piece connected to the upper and lower flanges of the floor joist at the supporting end, forming a closed cross section and improving rigidity. Therefore, the floor joists have improved rigidity and are stably supported by the floor girders without bending.

According to the present invention as set forth in claim 3, there is the following effect (2).

■Since the floor joist fixture has a floor joist mounting surface that can be mounted on the ends of multiple floor joists, it is possible to The joist mounting surfaces can be reliably and easily set to the same level. Therefore,
To stably support a plurality of adjacent floor joists at the same level with respect to a floor girder with certainty and ease.

[Example] Fig. 1 is a cross-sectional view that does not show an example of the construction state of the floor joist fixture.
Figure 2 is a side view of Figure 1, Figure 3 is a sectional view showing an example of the construction state of wide floor joists, Figure 4 is a side view of Figure 3, and Figure 5 is a side view of Figure 1.
The figure is a side view showing the floor joist fixture, and Figure 6 is the Vl of Figure 5.
7 is a plan view showing the state in which the floor joist fixture is attached to the floor structure; FIG. 8 is a plan view showing the state in which the floor joist is attached to the floor structure; FIG. 9 is a schematic diagram showing a unit building, and FIG. 10 is an exploded perspective view showing the building unit.

The unit building 10 shown in FIG.
3 are placed adjacent to each other, and those upper floor building units] 3 are placed adjacent to each other.
A plurality of roof units 14 are mounted on the second part.

Here, the building unit 12, j3 is of a frame type as shown in FIG. The four corners of the floor structure 17 are joined to the groove-shaped steel plate connecting pieces 16, and each column 1
By joining the four corners of the ceiling structure 19 to the groove-shaped steel plate connecting piece 18 provided at the upper end of the ceiling structure 19, the ceiling structure 19 is constructed to form a box shape.

The floor structure 17 has an outer frame formed by fitting and welding four channel steel floor girders 20 so as to overlap them inside the connecting piece 16. In addition, the floor structure 17 is made of a groove-shaped steel plate that bridges each of the plurality of floor beams 21 arranged in parallel between the opposing floor girders 20 and 20, and is provided at both ends of each floor beam 21. The connecting pieces 22 are welded to each of the corresponding floor beams 20. At this time, the flange 22A of the connecting piece 22 is welded onto the upper flange 2OA of the floor beam 20, and the lower flange 22B (not shown) of the connecting piece 22 is welded onto the lower flange 20B of the floor beam 20. . 20C
is the web of the floor girder 20.

In addition, in the floor structure 17, as will be described in detail later, a plurality of wooden floor joists 23 arranged in parallel are orthogonally mounted on the upper surface of each of the floor beams 21, and each floor joist is 23
are fixed to the two sides of the floor beams 21 by adhesive or nailing, and a floor board 24 is fixed to the upper part of each floor joist 23 by adhesive or nailing.

The ceiling structure 19 has an outer frame formed by fitting and welding four channel-shaped steel ceiling girders 25 so as to overlap them inside the connecting piece 18. In addition, the ceiling structure 19 includes each of the plurality of wooden ceiling joists 26 arranged in parallel with each other.
It is fixed to the lower flange 25B of the ceiling girder 25 with adhesive or nailing.

Note that a ceiling board is fixed to the lower part of each ceiling joist 26 with adhesive or nailing.

However, in the floor structure 17, when the floor girder 21 is spanned between the opposing floor girders 20 and 20, the level is lower than the second surface level of the floor girder 21 or the upper surface level of the floor girder 20. It is set as follows.

In the floor structure 17, as shown in FIG. 1, FIG. 2, FIG. 7, and FIG. Floor joist mounting surface 30
A floor joist fixture 30 equipped with A is welded, and the end of each floor joist 23 is mounted on the floor joist mounting surface 30A.

At this time, as shown in FIGS. 5 and 6, the floor joist fixture 30 includes a groove-shaped steel plate connecting piece 31 and an L-shaped steel plate tear-out plate that is welded to the connecting piece 31 and has a floor joist attachment surface 30A. It consists of 32 pieces. -F flange 3 of the connecting piece 31
1A is welded onto the upper flange 2OA of the floor beam 20,
The lower flange 31B of the connecting piece 31 is welded onto the lower flange 20B of the floor girder 20.

Further, the floor joist fixture 30 extends in the longitudinal direction of the floor girder 20, and the mounting piece 32 includes a floor joist mounting surface 30A on which the ends of the plurality of floor joists 23 can be mounted. The mounting piece 32 is provided with reinforcing ribs 33 at multiple positions in the longitudinal direction.

In this embodiment, the end of the floor joist 23 is supported by the floor joist mounting surface 30A of the mounting piece 32 of the floor joist fixture 30, and the outermost end of the floor joist 23 beyond the floor joist mounting surface 30A is supported by the floor joist mounting surface 30A. The notch portion 34 is placed on the upper surface of the connecting piece 31 . At this time, the load acting on the end of the floor joist 23 is supported by the floor joist aperture surface 30A, and no load action that would cause cracks is seen around the notch 34.

Furthermore, in the floor structure 17, as shown in FIG. 8, among the plurality of floor joists 23 arranged in parallel, each of the outermost floor joists 23 on both sides is replaced with a standard floor joist 23A. It is composed of wide floor joists 23B.

The standard floor joist 23A has a standard cross section and is mounted between the outermost floor beams 21.21 on both sides among the plurality of floor beams 21 arranged in parallel.

It should be noted that all of the floor joists 23 located on the inside of the floor structure 17 are standard floor joists having a standard cross section, or in this embodiment, those floor joists 23 are connected to the opposing floor girders 2 on both sides.
0.20 and supported by the floor joist fixture 30 described above.

The wide floor joist 23B has a wider cross section than the standard floor joist 23A, and the floor joists 21 located at the outermost side on both sides,
It is mounted between the floor girder 20 that faces this.

At this time, the wide floor joists 23B are connected to the wide structural plywood 40 and the floor girders 20 of the plywood 40, as shown in FIGS. 3 and 4.
A reinforcing wooden beam 41 is attached to the back surface that does not correspond to the top surface using adhesive or nailing, and has a thickness corresponding to the level difference between the top surface level of the floor beam 21 and the second surface level of the floor girder 20. Consisting of In this embodiment, there are three reinforcing wooden beams 41, one vertical wooden beam 41A provided along the upper surface of the floor beam 21, and one vertical wooden beam 41A. Floor girder 2 from both sides of A
It consists of two horizontal beams 41B that extend to a position close to zero.

Next, the operation of the above embodiment will be explained.

■Floor joist mounting surface 3 installed on the floor girder 20 (q tool 3° is the floor joist mounting surface 3 at approximately the same level as the second surface level of the floor girder 21)
Equipped with 0A. Therefore, the end portion of the floor joist 23 is placed on the floor joist fixture 30 provided on the floor girder 2o without any notch in the middle portion placed on the floor girder 21. Therefore, even when heavy objects are placed on the floor joists 23,
It is stably supported on the floor girder 20 without cracking around the end notch.

■The floor girder 20 has upper and lower flanges 3'l-A and 31B of the connecting piece 31 connected to its upper and lower flanges 20A and 20B at the portion that supports the end of the floor joist 23, forming a closed section and improving rigidity. It will be done.

Therefore, the floor joist 23 has improved rigidity and is stably supported by the floor girder 20 without bending.

■Since the floor joist fixture 30 is equipped with a floor joist mounting surface 30A on which the ends of a plurality of floor joists 23 can be mounted, each floor joist is The floor joist attachment surfaces 30A for the joists 23 can be reliably and easily set at the same level. Therefore, a plurality of adjacent floor joists 23 can be stably supported on the same level with respect to the floor girder 20 reliably and easily.

[Effects of the Invention] As described above, according to the present invention, the floor joists can be stably supported with respect to the floor girders.

[Brief explanation of the drawing]

Figure 1 is a sectional view showing an example of the construction state of the floor joist fixture;
Figure 2 is a side view of Figure 1, Figure 3 is a sectional view showing an example of the construction state of wide floor joists, Figure 4 is a side view of Figure 3, and Figure 5 is a side view of Figure 1.
The figure is a side view showing the floor joist fixture, and Figure 6 is the Vl of Figure 5.
7 is a plan view showing the state in which the floor joist fixture is attached to the floor structure; FIG. 8 is a plan view showing the state in which the floor joist is attached to the floor structure; Figure 9 shows unit 1~
FIG. 10 is a schematic diagram showing the building, and is an exploded perspective view showing the building unit. 17... Floor structure, 20... Floor beam, 21... Floor beam, 23... Floor joist, 30... Floor joist fixture, 30A... Floor joist mounting surface, 31. ...Connection piece, 32...Mounting piece. Patent applicant: Sekisui Chemical Co., Ltd. Representative Hiroshi 1) Kaoru

Claims (3)

[Claims] (1) An outer frame is formed by a plurality of floor girders, and the upper surface level of the floor girder is lower than the upper surface level of the floor girder between the floor girders facing each other. In a floor structure constructed by constructing a structure in which a plurality of wooden floor joists are installed in a low-level state and are orthogonally mounted on the upper surface of each floor joist, the inner surface of the floor joist is A floor joist fixture with a floor joist mounting surface at approximately the same level as the top surface level of the floor joist is connected to the floor joist, and the end of each floor joist is mounted on the floor joist mounting surface of the floor joist fixture. Features a floor structure. (2) The floor girder is made of channel steel, the floor joist fixture is made of a connecting piece made of channel steel, and a mounting piece that is joined to the connecting piece and has a floor joist mounting surface, 2. The floor structure according to claim 1, wherein the upper flange is joined to the upper flange of the floor girder, and the lower flange of the connecting piece is joined to the lower flange of the floor girder. (3) The floor structure according to claim 1 or 2, wherein the floor joist fixture includes a floor joist mounting surface that extends in the longitudinal direction of the floor girder and is capable of mounting end portions of a plurality of floor joists.