JPH076252B2 - Floor structure - Google Patents

Description

The present invention relates to a floor structure having girders and girders.

[Conventional technology]

FIG. 8 is a perspective view showing a main part of a floor structure formed using a conventional girder, and FIG. 9 is a sectional view of the same.

This floor structure 10 relates to the floor portion of the building unit, and the floor structure 10 is different from the girder 11 arranged in the X direction.
The end portions of the beam 12 arranged in the Y direction are joined together. The girder 11 is formed of a channel steel and has a web portion 13
Flange portions 14 are provided above and below, respectively. On the other hand, the beam 12 is formed of a square pipe material, and the connecting piece 15 is attached to the end portion. Similar to the girder 11, the connecting piece 15 is also made of a grooved steel material, and is provided with flange portions 17 above and below the web portion 13, respectively.

The connection of the ends of the small beam 12 to the large beam 11 is carried out by tying the upper and lower flange portions 14 of the large beam 11 and the upper and lower flange portions 17 of the connecting piece 15 to each other, and corresponding flange portions 14, 17
It is performed by welding each other.

When the ends of the beam 12 are joined to the beam 11, a plurality of joists 18 are arranged on the beam 12. Each joist 18 is a beam 12
Are arranged in a crossing direction with respect to the cross beam, that is, in the X direction, and the joist 19 is joined to the beam 12 respectively by driving a nail 19. A floor surface material 19A is further adhered to the upper portion of the joist material 18 joined to the cross beam 12, whereby the floor portion of the building unit, that is, the floor structure 10 is formed.

[Problems to be Solved by the Invention]

However, in the above-mentioned conventional floor structure 10, when a load or impact is applied to the floor surface in the direction of arrow A, the flange portion 14 of the girder 11 as a joint portion vibrates in the direction of arrow B. It may happen. Such vibration was caused to cause the beam to vibrate in the direction of arrow B, and eventually the floor surface.

According to the conventional floor structure disclosed in Japanese Patent Laid-Open No. 51-145128, a damping steel plate is added to a part of the structure,
The structure and the damping steel plate are clamped. However, according to such a method, although the damping performance of the structure is locally improved at the portion where the damping steel plate is added, the damping performance of the entire structure is efficiently improved. It wasn't something.

It is an object of the present invention to obtain a floor structure that improves the vibration damping performance, and thus effectively improves the vibration damping performance of the entire building structure.

[Means for Solving the Problems]

In order to achieve the above object, the present invention has a flange portion and a web portion, a floor girder made of a damping steel plate in which a viscoelastic plate is sandwiched between steel plates, and two bodies of the girder are separated from each other between the two bodies. A floor structure having a floor girder extending across a connecting piece, wherein the connecting piece is formed of a vibration-damping steel plate in which a viscoelastic plate is sandwiched between steel plates. ing.

[Action]

According to the present invention, the flange portion and the web portion, the floor girder as a damping steel plate sandwiching a viscoelastic plate between the steel plates, and two bodies of the girder are separated from each other via a connecting piece between the two bodies. A floor structure having a floor beam across which the connecting piece is formed so that the flange portion and the web portion are formed by a damping steel plate in which a viscoelastic plate is sandwiched between steel plates. Not only can the floor girders be more effectively damped, but also the columns and studs that are connected to the floor girders can be damped. This improves the damping performance of the floor structure,
As a result, it becomes possible to efficiently improve the damping performance of the entire building structure.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 relates to a floor structure applied to an embodiment of the present invention, and is a cross-sectional view taken along the line I-I in FIG. 4, and FIG. 2 shows a main part of a girder as a constituent material of the floor structure. 3 is a perspective view showing a structure of a building unit using a floor structure, and FIG.

The floor structure 20 shown in FIG. 1 is a building unit shown in FIG.
Equivalent to 21 floors. This building unit 21 constitutes a part of a unit building, for example, joins a plurality of structural materials,
Formed in combination.

The building unit 21 has steel columns 22 standing upright at four corners. A steel girder girder 23 is arranged between the lower ends of the columns 22 in the X direction among the vertically arranged columns 22, and between the lower ends of the columns 22 in the Y direction. Is provided with a steel gable floor girder 24. The girder floor girders 23 and the gable floor girders 24 are arranged so that their end portions are connected to the lower end side portions of the columns. On the other hand, among the upright columns 22, a steel girder ceiling girder 25 is arranged between the upper ends of the columns 22 in the X direction, and the columns 22 in the Y direction are arranged.
A gable ceiling girder 26 made of steel is disposed between the upper end side portions of the.
Each girder ceiling girder 25 and gable ceiling girder 26 are also connected to the upper end side portion of each column 22 at their end portions.

The girder floor girder 23 is made of channel steel as shown in FIGS. 1 and 2, and has flange portions 28 above and below the web portion 27. This girder floor girder 23 is formed by bending a damping steel plate 29 shown in FIG. 3 into a groove shape. That is,
The vibration-damping steel plate 29 is formed by sandwiching a viscoelastic plate 31 having a vibration-damping property between a pair of steel plates 30, and has high vibration-damping performance particularly against vibration applied in the direction of arrow C. .

A plurality of floor girders 32 are arranged between the pair of girder floor girders 27 facing each other, and each floor girder 32 is arranged at a predetermined interval in the X direction. Each floor beam 32 to be arranged is
Each end is joined to each girder floor girder 23. The floor beam 32 is made of square pipe material as shown in FIG.
A connecting piece 33 is attached to the end. Connecting piece 33 is also girder floor girder 27
Similarly to the above, the vibration damping steel plate 29 is formed of a grooved steel material formed by bending, and the flange portions 35 are provided above and below the web portion 34, respectively.

The connection of the ends of the floor girder 32 to the girder floor girder 23 is
The upper and lower flange portions 28 of 23 and the upper and lower flange portions 35 of the connecting piece 33 are held together, and the overlapped flange portions 28 and 35 are welded to each other.

In this manner, when the girder floor girder 23 and the floor girder 32 are joined, a plurality of joists 36 are arranged on the floor girder 32.
Each joist 36 is arranged at a predetermined interval in the Y direction, and each end is supported by each facing girder girder 24. Each joist 36 is an intersection of floor joists 32 with the floor joists 32.
Is joined with. The joining is performed by driving a nail 36 on the floor beam 32 and the joist 36. Furthermore, joist 36 to be arranged
The flooring material 38 is attached to the upper surface of the, so that the floor structure 20 of each building unit 21 is formed. In addition,
In FIG. 4, 39 indicates a ceiling beam.

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

According to the floor structure 20 according to the above embodiment, the entire girder floor girder 23 and the connecting pieces 33 at both ends of the floor girder 32 are formed of the damping steel plate 29, and the girder floor formed by the damping steel plate 29. The flange portion 28 of the girder 23 and the flange portion 35 of the connecting piece 33 are welded to each other. As a result, even when vibration or impact in the direction of the arrow A is applied to the floor surface of the building unit 21, the vibration and impact are damped by the flange portions 28 and 35 formed of the damping steel plate 29. It becomes possible. That is, each flange portion 28 where strain and vibration easily occur
And 35 are formed by the part of the damping steel plate 29, the floor beam
The vibrations transmitted from 32 to the girder beam 23 are greatly dampened,
It is possible to greatly improve the vibration damping performance of the entire floor structure 20. Further, since the columns and studs connected to the floor girder are also damped, it is possible to efficiently improve the damping performance of the entire building structure.

〔The invention's effect〕

INDUSTRIAL APPLICABILITY As described above, according to the present invention, the flange portion and the web portion are the floor girder that is a vibration-damping steel plate in which a viscoelastic plate is sandwiched between steel plates, and the two pieces of the girder are separated from each other to connect the two pieces. A floor structure having a floor girder that is passed through via the connecting piece, wherein the connecting piece has a flange portion and a web portion, which are vibration damping steel plates in which a viscoelastic plate is sandwiched between steel plates. It is possible to efficiently improve the vibration damping performance of the structure, and thus efficiently improve the vibration damping performance of the entire building structure.

[Brief description of drawings]

FIG. 1 shows a floor structure to which an embodiment of the present invention is applied, a cross-sectional view taken along the line I-I of FIG. 4, and FIG. 2 shows a main part of a girder as a constituent material of the floor structure. Fig. 3 is a perspective view, Fig. 3 is a cross-sectional view of the main part of the damping steel plate, Fig. 4 is a perspective view showing the structure of a building unit using a floor structure, and Fig. 8 is a unit formed using a conventional girder. FIG. 9 is a perspective view showing the main part of FIG. 23 …… girder floor girder 27, 34 …… web part, 28, 35 …… flange part 28 …… damping steel plate, 30 …… steel plate, 31 …… viscoelastic plate 32 …… floor girder, 33 …… connection Piece

Claims (1)

[Claims] 1. A floor girder made of a damping steel plate in which a viscoelastic plate is sandwiched between steel plates, and two girders of the girder are separated from each other and a connecting piece is passed between the two parts. A floor structure having a floor beam, wherein the connecting piece is a damping steel plate in which a viscoelastic plate is sandwiched between steel plates in the flange portion and the web portion.