JPH03202553A - Floor structure of building - Google Patents

Abstract

PURPOSE:To reduce noise emission by reducing the transmission of vibration and impact to under the floors by a method in which bundles supporting floor panels are placed only on the upsides of large and small beams formed integrally with concrete slabs. CONSTITUTION:Bundles 11 and 12 are provided on concrete slabs 1 and floor panels 14 are supported through the bundles 11 and 12. In such a floor structure, the bundles 11 and 12 are set only on the upside of large and small beams 8 and 9 formed integrally with the concrete slabs 1 so that vibration or impact to the floor panels 14 escapes through the beams 8 and 9 to columns and outer walls 2. The transmission of vibration or impact through the slabs 1 to under the floors can thus be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION A1 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 steel reinforced concrete buildings such as housing complexes and office buildings support the main drawers and joists through a large number of bundles erected on concrete slabs that partition the building into each floor. However, it has a structure in which flooring material is laid on top of these joists.

(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 transmitted to the concrete slab through the bundles, and in particular, vibrations and shocks applied to the flooring material are transmitted to the concrete slab between each beam. There was an inconvenience in that the impact was directly heard downstairs, causing noise problems.

The present invention has been made in view of the above-mentioned circumstances, and is a floor structure for a building that prevents vibrations and impacts applied to the flooring material laid on the top surface of a concrete slab from being transmitted as noise through the concrete slab to the downstairs floor. The purpose is to provide

B1 Structure of the Invention (1) Means for Solving the Problems In order to achieve the above object, the present invention provides a building in which a plurality of bundles are arranged on a concrete slab and flooring is supported through the bundles. In the floor structure, the bundle is arranged only on the upper part of the beam formed integrally with the concrete slab.

(2) Function According to the present invention having the above-described configuration, vibrations and shocks applied to the flooring material are transmitted to the concrete slab through the bundle, but the beam is formed integrally with the concrete slab by the bundle. Since the bundle is disposed only in the upper part, vibrations and shocks transmitted through the bundle are dissipated through the beam to, for example, a column or a wall. As a result, the vibrations and impacts are prevented from being directly transmitted to the concrete slab between the beams, and the noise transmitted downstairs via the concrete slab is reduced.

(3) Examples Hereinafter, the present invention will be described 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 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 lower surface of each concrete slab l to surround the periphery of the room, and on the inside of these four girders 8, there are two girders 8 whose height is slightly lower than that of the cough girder 8 The small beams 9 are formed in parallel.

On the upper surface of the concrete slab 1, a large number of large drawers 10 extending in a direction perpendicular to the small beams 9 are supported in parallel.

The main puller 10 is divided into three parts 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 main beam 8 on the balcony 7 side, and the other end is supported by a bundle 12 at the top of two small beams 9. Further, both ends of the central large puller 10 are supported by bundles 12 above the two small beams 9.

A large number of joists 1 are installed parallel to the small beams 9 between the adjacent large joists 10.
3 has been constructed. The intervals between adjacent joists 10 and the intervals between adjacent joists 13 are set to be approximately equal, and a panel-shaped flooring material 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-angled isosceles triangle shape, and the upper and lower flanges 10. and a web 10□ that connects them.

The bundle 11 that supports the large puller 10 at the upper part of the girder 8 includes an L-shaped support plate 15 made of a steel plate and welded to the end face of the large puller 10. Then, the heads of the support bolts 7 screwed from below into two nuts 16 welded to the upper surface of the bottom of the support plate 15 come into contact with the upper surface of the concrete slab 1 on the top of the girder 8, and the heads of the support bolts Four stud bolts I8 provided pass through the sides of the bundle 11 and are secured with nuts 19.

On the other hand, as shown in FIGS. 5(a) and 5(b), the ends of the large IOs that are butted against each other at the top of the small beam 9 are supported by bundles 12 on the upper surface of the concrete slab 1 above the small beam 9, respectively. has been done. The bundle 12 has a pair of L-shaped support plates 21 made of steel plates fixed to both sides of the web 10 at the end of the main drawer 10 with two bolts 20, and stand bolts 22 and nuts on the upper surface of the concrete slab l. 2
Two support bolts 25 welded to the board 24 fixed in step 3
The bottom of the support plate 21 is fixed to a predetermined position of a support bolt 24 with two upper and lower nuts 26.

As shown in FIGS. 6(a) to (C), the joists 13 installed between the large pulleys 10 are made of wood with a rectangular cross section, and
It is attached to a placket 27 made of a steel plate collinearly aligned with two bolts 25 on both left and right sides of the web 10□.

That is, the placket 27 is attached to the web 10 of the large pull 10.
．． A flat mounting portion 27. And this mounting part 2
7. A joist support portion 273 having a U-shaped cross section and a joist support portion 273 welded to the joist support portion 27. A triangular receiving plate 27 extending horizontally from the upper end. The end portion of the joist 13 is a joist support portion 27. from above and fixed with bolts 28. The upper surface of the flange 10I of the large drawer 10 and the upper surface of the joist 13 are positioned substantially flush. However, the flange 10. Since a thin anti-vibration rubber 29 is interposed between the upper surface and the floor material 14, 14', the upper surface of the flange 10I is actually positioned slightly lower than the upper surface of the joists 13.

The flooring material 14, 14' is composed of a wood base material such as a plywood board, and a finishing material 30 such as a decorative board, a carpet, a tatami mat, etc. is laminated on top of the base material in a removable manner as required. Flooring 14.
The shape of 14' is formed to have the same size as a square fold defined by a pair of adjacent large drawers 10 and a pair of adjacent joists 13.
The floor surface is constructed by laying.

Each flooring material 14.14' is fixed to the joists 13 made of wood with nails, etc., but some of the flooring materials 14' have seventh holes at the four corners.
The locking mechanism 31 shown in FIGS.
A guide member 3 that covers the upper outer edge and inner circumference of the hole formed in 4'
2. Bearing member 33 connected to the lower end of this guide member 32
, a head 34 that fits into the guide member 32. and bearing member 33
Rotating member 3 consisting of shaft portion 34t rotatably supported by
4. It consists of a locking member 36 fixed to the lower end of this rotating member 34 with a bolt 35. Mouth/tsuk member 36
has upward protrusions 36. on both ends. This protrusion 3
61 is engaged with the lower surface of the receiving plate 27 of the bracket 27, thereby fixing the floor material 14'.

Next, the operation of the embodiment of the present invention provided with the above-mentioned tank bottom will be explained.

The work of laying the flooring materials 14 and 14' on the concrete slab 1 begins by placing the main drawers 10 of the five aisles and the main drawers 10 on the balcony 7 side using bundles 11 and 12 above the main beams 8 and small beams 9, respectively. It is supported on a concrete slab 1, and the central large pulley 10 is connected to a pair of small beams 9 by a bundle 12.
It is supported on the concrete slab 1 located at the top. Next, a large number of joists 13 are installed between the joists 10 thus installed using brackets 27, and the lattice-shaped flooring support surface is formed at the bottom of the tank by the joists 10 and the joists 13. Next, the four sides of the flooring material 14 formed in a panel shape are
It is placed on the joist 13 adjacent to O and fixed by driving nails into the wooden joist 13. At this time, a thin anti-vibration rubber 29 is interposed between the steel puller 10 and the floor material 14.

Further, some of the removable flooring materials 14' are placed on the floorboards 10 and the joists 13, and are locked by four locking mechanisms 31, respectively. This locking operation is performed by inserting a wrench into the head 341 of the rotating member 34 of the locking machine WJ31, rotating it, and moving the locking member 36 from the chain line position to the solid line position in FIG. 7(a). As a result, the protrusion 36 of the locking member 36. is the receiver of the bracket 27 that connects the main drawer 10 and the joist 13 @27. The floor material 14 is engaged with the lower surface.
′ is fixed. To remove the flooring 14', the locking member 36 can be moved to the chain line position by the reverse operation as described above.In this way, by making the flooring 14' removable, the flooring 14' can be removed. The space between the concrete slabs 1 can be used as an underfloor storage or the like.

As described above, by arranging the upper surface of the joist 13 so as to be substantially flush with the upper surface of the main drawer 10, the thickness of the joist 13 is absorbed within the thickness of the large drawer IO. The distance between the concrete slab 1 and the flooring 14° 14' is shortened, and as a result, a sufficient ceiling height can be ensured. Furthermore, since the four sides of the flooring 14.14' are supported by the joists 10 and joists 13, the flooring 14.14' can be prevented from bending. In addition, vibrations and shocks applied to the flooring 14.14' are transmitted to the east 1
However, since the bundles 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 floor 2 through the main beam 8 and the small beam 9. .3 to prevent noise from being transmitted to the downstairs area.

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, in the embodiment, the large beam 8 and the small beam 9 are provided on the bottom surface of the concrete slab 1, but this is not applicable to a building with a so-called reverse beam structure in which the large beam 8 and the small beam 9 are provided on the top surface of the concrete slab 1. The main floor structure can also be applied. Further, the cross-sectional shape of the large drawer 10 is not limited to that of the embodiment described above, but may be shaped like the large drawer 10' shown in FIG. 8(a). Furthermore, a steel pipe with a rectangular cross section as shown in FIG. 8(b) can be used as it is as a high-strength steel pipe 10'. Furthermore, this steel pipe is attached to a flange 10 as shown in FIG. 8(c) or FIG. 8(d). By pressing into a shape having a web 102' and a web 102', it is possible to use the underfloor space more effectively, and the bracket 27 that supports the joist 13 can be easily attached using the web 10'. be able to.

C3 Effects of the Invention As described above, according to the present invention, the bundle that transmits vibrations and impacts applied to the flooring material to the concrete slab is disposed on the upper part of the beam formed integrally with the concrete slab. Vibrations and shocks are mainly released to, for example, columns and walls via beams. As a result, vibrations and shocks are prevented from being transmitted directly to the concrete slab between the beams, and noise transmitted downstairs via the concrete slab is reduced.

[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 building that has its floor structure, 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-TV a sectional view taken along the line in Fig. 3, Fig. 4(b) is a sectional view taken along the IVb direction in Fig. 4(a), Fig. 5(a) is a sectional view taken along the Va-Va line in Fig. 3, Figure 5 (b
) is a view taken in the vb direction of Fig. 5(a), Fig. 6(a) is an enlarged view of the Vla portion of Fig. 3, and Fig. 6(b) is a cross section taken along the vxb-vib line of Fig. 6(a). Fig. 6(c) is Fig. 6(a)
7(a) is a sectional view taken along the Vl c - Vl c line of
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... Girder (beam), 9
...Small beam (beam), 11.12...Bundle, 14.14'
...Flooring material

Claims (1)

[Claims] A plurality of bundles (11, 12) on a concrete slab (1)
are arranged, and the flooring material (14, 14,
14'), wherein the bundle (11, 12) is arranged only on the upper part of the beam (8, 9) formed integrally with the concrete slab (1). The floor structure of things.