JPH03257251A - Floor structure for building - Google Patents

Abstract

PURPOSE:To improve a sound shield effect for the lower story by supporting a floor member by arranging a plurality of bundles on inverted beams formed in on upper surface of a concrete slab. CONSTITUTION:Four large beams 8 and two small beams 9 are formed into inverted beams on an upper surface of a concrete slab 1, and many sleepers 10 are parallelly provided in an upper part of these large and small beams 8, 9. Next, the central sleeper 10 is supported on an upper part of the paired small beams 9 by a bundle 12 while supporting the sleeper 10 in a side of a passage 5 and the sleeper 10 in a balcony side 7 on an upper part of the large and small beams 8, 9 by a bundle 11 and the bundle 12. Then a floor member 14, formed in panel shape, is fixedly mounted onto the sleeper 10 and a joist 13. In this way, transmission of noise to the lower story can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION A0 Object of the Invention (1) Industrial Application Field The present invention relates to a floor structure in a building having a reinforced concrete structure, a steel reinforced concrete structure, or a steel frame structure.

(2) Conventional technology Conventional reinforced and steel-framed concrete buildings such as housing complexes and office buildings are reinforced by forming girders and small beams on the back of the concrete slabs that partition the building into each floor. , Ceiling material is stretched from the back of the concrete slab via hanging bolts to hide these large and small beams. In addition, on the upper surface of the concrete slab where the girders and small beams are not exposed, a plurality of large joists are supported in parallel via a large number of joists, and the upper surface of a plurality of joists installed orthogonally to the top of the large joists is supported in parallel. The flooring is covered.

(3) Problems to be Solved by the Invention However, in the above-mentioned conventional floor structure, vibrations and impacts applied to the flooring material are directly transmitted to the upper surface of the concrete slab through a large number of holes, which causes noise to the downstairs. Not only that, but the space formed between the concrete slab and the ceiling material becomes a dead space, and there is a problem in that the space cannot be used effectively.

The present invention was made in view of the above-mentioned circumstances, and it prevents noise from being transmitted from the upper floor to the lower floor through the concrete slab, and also eliminates the dead space formed on the back side of the concrete slab to make the space more efficient. The purpose is to provide a floor structure for buildings that can be used for various purposes.

B1 Structure of the Invention (1) Means for Solving the Problems In order to distantly achieve the above object, the present invention provides a floor structure for a building that supports flooring through a plurality of holes on a concrete slab. It is characterized in that the bundle is placed only on the top of the reverse beam formed on the top surface of the concrete slab.

(2) Function According to the present invention having the above-mentioned configuration, since the flooring is supported by the east provided on the reverse beam formed on the upper surface of the concrete slab, the Since vibrations and shocks are released to the columns and walls via the reverse beam, the sound insulation effect for the downstairs area is improved. Moreover, since no beams are exposed on the back side of the concrete slab, it is not only convenient in terms of appearance, but also eliminates dead space by using the underfloor space formed between the floor material and the concrete slab as a storage space or the like.

(3) Examples Hereinafter, the present invention will be explained in detail based on the drawings.

As shown in Figures 1 to 3, this building consists of multiple floors divided vertically by concrete slabs 1, and the rooms provided on each floor are connected to the left and right exterior walls 2 in a direction perpendicular to the plane of the paper. It is divided by an inner wall 3 that separates it from other adjacent rooms, and pillars 4 are erected at its four corners. Further, a passageway 5 overhangs on the outside of one of the outer walls 2, and a balcony 7 with a handrail 6 overhangs on the outside of the other outer wall 2. Four girders 8 are formed on the top surface of each concrete slab 1 so as to surround the periphery of the room, and on the inside of these four girders 8, there are two girders 8 whose width is slightly narrower than that of the girder 8. Small beams 9 are formed in parallel. These large beams 8 and small beams 9 both constitute a so-called reverse beam formed on the upper surface of the concrete slab 1, and as a result, the back surface of the concrete slab 1 has a flat ceiling surface with no exposed beams. .

A large number of large beams 10 extending in a direction perpendicular to the small beams 9 are supported in parallel on top of the large beams 8 and small beams 9.

That is, the main puller 10 is divided into three in the longitudinal direction, and one end of the left and right large pullers 10 is supported by a bundle 11 at the top of the main beam 8 on the aisle 5 side and the large beam 8 on the balcony 7 side, and the other ends are The end is east 1 at the top of the two small beams 9.
It is supported by 2. Further, both ends of the central main drawer 10 are supported at the east 12 at the upper part of the two small beams 9. A large number of joists 13 are installed parallel to the small beams 9 between the adjacent large drawers 10. The intervals between adjacent joists 10 and the intervals between adjacent joists 13 are set to be approximately equal, and the panel-shaped flooring 14. 14' is supported.

As shown in FIGS. 4(a) and (b), the said Ohiki 10
is formed by bending the upper and lower edges of a band-shaped steel material into a right isosceles triangle shape, and includes upper and lower flanges 101 and a web 102 connecting them.

The east 11 that supports the large drawer 10 at the upper part of the girder 8 is provided with an L-shaped support plate 15 made of a steel plate and welded to the end face of the large drawer 10. Then, the head of the support bolt 17 screwed from below into two nuts 16 welded to the upper surface of the bottom of the support plate 15 comes into contact with the upper part of the girder 8, and the four bolts installed in the outer wall 2 A stud bolt 18 passes through the side of the east 11 and is fixed with a nut 19.

On the other hand, as shown in Fig. 5 (a>, (b)), the small beam 9
The ends of the large bows 10, which abut each other at the top, are each supported by an east 12 on the top of the beam 9. East 12 is its web 1 at the end of Ohiki 1Ω
A pair of L-shaped support plates 21 made of steel plates are fixed to both sides of the concrete slab 1 with two bolts 20, and a substrate 2 is fixed to the top surface of the concrete slab 1 with stud bolts 22 and nuts 23.
The bottom of the support plate 21 is fixed to a predetermined position of the support bolt 24 with two upper and lower nuts 26.

As shown in FIGS. 6(a) to 6(c), the joists 13 installed between the large pullers 10 are made of wood with a rectangular cross section, and
The web 102 is attached to both left and right sides of the web 102 with two bolts 25 to collinear steel plate brackets 27.

That is, the bracket 27 is connected to the web 10 of the main drawer 10.
2. A flat plate-shaped mounting portion 27. And this installation R2
It consists of a joist support 8272 with a U-shaped cross section welded to 7, and a triangular receiving plate 273 extending horizontally from the upper end of this joist support 272. from above and fixed with bolts 28. Then, the flange 10 of the large drawer 10. The upper surface and the upper surface of the joist 13 are positioned substantially flush. However, the flange 10. Since a thin vibration-proof rubber 29 is interposed between the upper surface and the floor material 14, 14', the flange 10 and the upper surface are actually positioned slightly lower than the upper surface of the joist 13.

The flooring material 14.14'' consists of a wood base material such as plywood, and on top of it is a finishing material such as decorative board, carpet, tatami mats, etc.
0 is stacked. The shape of the flooring material 14.14'' is formed to have the same size as a square-shaped fold defined by a pair of adjacent large drawers 10 and a pair of adjacent joists 13, and the flooring material 14 is formed at each fold. By laying .14", a flat floor surface is constructed.

Each flooring material 14, 14' is fixed to a joist 13 made of wood with nails or the like, but some of the flooring materials 14' have locking mechanisms 31 at the four corners shown in FIGS. 7(a) and (b). It is provided and is detachable. The locking mechanism 31 locks the floor material 14'
a guide member 32 that covers the upper outer edge and inner circumference of the hole formed in the hole;
A bearing member 33 is connected to the lower end of the guide member 32, and a head portion 34 is fitted into the guide member 32. and a rotating member 34 consisting of a shaft portion 34□ rotatably supported by the bearing member 33,
It consists of a locking member 36 fixed to the lower end of this rotating member 34 with a bolt 35. The locking member 36 has upward protrusions 36 on both ends. The flooring 14' is fixed by engaging the protrusion 36 with the lower surface of the receiving plate 273 of the bracket 27.

Next, the operation of the embodiment of the present invention having the above-described configuration will be explained.

The work of laying the flooring material 14 and 14' on the concrete slab 1 begins by placing the large pull 10 on the aisle 5 side and the large pull 10 on the balcony 7 side using the east 11 and east 12 to the top of the main beam 8 and the small beam 9, respectively. In addition to supporting Daihiki 10 in the center, East 12
It is supported on the upper part of a pair of small beams 9. Next, a large number of joists 13 are constructed using brackets 27 between the joists 10 installed in this manner, and the joists 13 and the joists 10 form a lattice-like flooring support surface. Next, the four sides of the panel-shaped flooring material 14 are placed on the adjacent large bow 10 and the adjacent joists 13, and fixed by driving nails into the wooden joists 13.

At this time, a thin anti-vibration rubber 29 is interposed between the steel puller 10 and the floor material 14. In addition, some of the removable flooring materials 14' are placed on the main drawers 10 and the joists 13, and each
It is locked by two locking mechanisms 31. This locking operation is performed by inserting a wrench into the head 341 of the rotating member 34 of the locking mechanism 31 and rotating the locking member 36 as shown in FIG.
)'s IJl! This is done by moving from the position to the solid line position. As a result, the protrusion 36 of the locking member 36. is the receiving plate 2 of the bracket 27 that connects the main drawer 10 and the joist 13.
7. The floor material 14' is fixed by engaging the lower surface. Flooring material 14
In order to remove ', the locking member 36 may be moved to the chain line position by the reverse operation as described above. In this way,
By making the floor material 14' removable, the space formed between the floor material 14' and the concrete slab 1, corresponding to the width of the large beams 8 and small beams 9, can be used as an underfloor storage, etc. . At this time, by arranging the upper surface of the joist 13 so as to be substantially flush with the upper surface of the joist 10, the thickness of the joist 13 is absorbed within the range of the thickness of the joist 10,
This enables even more effective use of the space under the floor. Moreover,
Since the four sides of the flooring 14.14' are supported by the joists 10 and the floor joists 13, it is possible to prevent the flooring 14.14' from bending. In addition, vibrations and shocks applied to the flooring 14 and 14' are transmitted through the joists 13 and the main puller 10 to the east 11 and 12.
However, since the east 11 and 12 are supported on the upper part of the main beam 8 and the small beam 9, the vibrations and shocks are transmitted to the pillar 4 and the walls 2 and 3 via the main beam 8 and the small beam 9. This prevents the noise from being transmitted downstairs.

Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the embodiments described above, and various small design changes can be made without departing from the scope of the invention described in the claims. Is possible.

For example, the cross-sectional shape of the drawer 10 is not limited to that of the embodiment described above, but may be shaped like the drawer 10' shown in FIG. 8(a). Moreover, a steel pipe with a rectangular cross section as shown in FIG. 8(b) can be used as is as the high strength drawing 10'.

Furthermore, if this steel pipe is pressed into a shape having a flange 101' and a web 102' as shown in FIG. 8(C) or FIG. 8(d), the underfloor space can be used more effectively. Moreover, the web 10. The bracket 27 that supports the joist 13 can be easily attached by using the bracket 27.

C1 Effects of the Invention As described above, according to the present invention, vibrations and shocks applied to the reverse beam formed on the upper surface of the concrete slab from the flooring material through the east are released from the reverse beam to the columns and walls. Since the noise is not transmitted directly to the concrete slab, the sound insulation effect for the downstairs area is significantly improved. Moreover, the noise generated in the flooring is attenuated in the large underfloor space formed between the flooring and the concrete slab, further improving the sound insulation effect. Furthermore, by using the underfloor space formed between the flooring material and the concrete slab as an underfloor storage, not only is dead space eliminated, but the beams are not exposed on the ceiling surface, which is convenient in terms of appearance.

[Brief explanation of drawings]

Figures 1 to 7 show one embodiment of the present invention.
The figure is a vertical cross-sectional view of an apartment complex to which the floor structure is applied, Figure 2 is a cross-sectional view taken along the line ■-■ in Figure 1, Figure 3 is a partially enlarged view of Figure 2, and Figure 4 (a) is a A sectional view taken along the rVa-rVa line in Figure 3,
4th EZ (b) is a view in the rVb direction of Fig. 4(a),
FIG. 5(a) is a sectional view taken along the line V a -V a in FIG. 3, FIG.
a) is an enlarged view of the VIa section in FIG. 3, FIG. 6(b) is a sectional view taken along the line ■b-vxb in FIG. 6(a), and FIG. 6(c) is an enlarged view of the VIa section in FIG. 6(a). VIc line sectional view, Fig. 7(a) is the 3rd
An enlarged view of part ■a in the figure, Figure 7(b) is part ■b of Figure 7(a)
8(a) to 8(d) are cross-sectional views showing modified examples of the large pull. 1... Concrete slab, 8... Large beam (reverse beam),
9...Small beam (reverse beam), 11.12...East, 14.1
4...Flooring material

Claims (1)

[Claims] A plurality of bundles (11, 12) on a concrete slab (1)
In the floor structure of a building that supports floor materials (14, 14') through A floor structure of a building characterized by the fact that