JP2002317521A - Floor supporting structure of building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a floor supporting structure of a building having a concrete skeleton structure, which improves sound insulating performance by avoiding contact of a floor structure, provided on a floor slab, with a concrete skeleton so as to reduce transmission of impact vibrations, applied onto an upstairs floor, to a downstairs dwelling space to the utmost. SOLUTION: The inside of the dwelling space Dw is partitioned into a space Su above the floor and a space Sd under the floor by the floor structure Fr. A sleeper beam 5 of the floor structure Fr is supported in a floating manner by a plurality of reinforced rods 14 suspended from the concrete skeleton F, and the floor structure Fr is made to avoid coming into contact with the concrete skeleton F.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor support structure in a building.

[0002]

2. Description of the Related Art Generally, in a multi-story building such as a condominium or a multi-story building, the vibration and impact applied to the floor above the floor are:
There is a problem that vibration noise is transmitted from the floor structure to the downstairs living space, causing deterioration in the environment of the living space and deterioration in quality.In particular, recently, due to changes in lifestyle,
The number of Japanese-style rooms has decreased, and in Western-style rooms, the needs of residents have changed from carpet floors to flooring floors, and the noise and vibration transmitted to the living space downstairs tends to be even greater, and sound insulation measures have become a major issue. .

Therefore, conventionally, as a sound insulation measure, measures such as increasing the thickness of the floor slab or making the floor structure itself a sound insulation structure have been taken.

[0004]

However, in such a conventional floor support structure, the floor is supported in a state of being in contact with the skeleton portion of the building such as the skeleton or the frame of the building via the floor support member. , The shock vibration applied to the floor above the floor,
Not only is it transmitted directly to the skeletal structure and frames below the floor via the floor support members, which causes loud vibration noise in the living space below the floor, but also causes a significant increase in the cost of the building itself. There is another problem.

The present invention has been made in view of the above circumstances, and a floor structure supporting a floor is floated, that is, a floating structure is supported by a suspension rod such as a reinforcing rod suspended from a frame or a frame. By doing so, the floor structure is prevented from contacting the skeleton and frame, and the propagation of vibration noise applied to the floor above the floor to the living space below the floor is reduced as much as possible, thus improving the sound insulation performance. It is a primary object of the present invention to provide a floor support structure for a new building which is improved.

The present invention also provides a floor support structure for a new building in which a living space can be easily formed with an underfloor space and an overfloor space, and the volume ratio of both spaces can be easily changed. Another purpose is to provide

[0007]

In order to achieve the above object, according to the first aspect of the present invention, in a multi-story building having a concrete frame structure, a floor provided on a floor slab in a living space is provided. The structure is divided into an underfloor space and an underfloor space, and the floor structure is constituted by a plurality of heavy beams arranged on one plane and a floor plate laid thereon, The pulling beam is supported in a floating manner by a plurality of hanging rods suspended from the concrete frame, and the floor structure is configured to avoid contact with the concrete frame. , The floor structure can avoid contact with the concrete structure, minimize the propagation of impact vibration applied to the floor above the floor to the living space below the floor, and greatly improve the sound insulation performance Can also be Slab, there the load of the floor structure is not applied, and sound insulating function because it need not consider, can be made thinner than conventional, correspondingly,
The effective height of the living space can be increased, the seismic resistance and the vibration control performance can be enhanced, and the construction cost of the concrete skeleton can be reduced. Further, since no support member for supporting the floor structure is required on the floor slab, an underfloor space free of obstacles can be easily formed under the floor, and the length of the suspension rod can be reduced. By adjusting the height, the volume ratio between the space above the floor and the space below the floor can be freely set.

In order to achieve the above object, according to the present invention, in a building having two or more floors, a floor structure partitioned into two or more floors is arranged on one plane. A floor plate is laid on a plurality of pulling beams to be formed, and the pulling beams are supported in a floating manner by a plurality of hanging rods suspended from a ceiling frame. It is characterized by avoiding contact with frames such as beams, beams, etc. According to this feature, it is possible to reduce the propagation of shock vibration applied to the floor above the floor to the living space below the floor as much as possible. And the sound insulation performance can be greatly improved. In addition, the frame does not receive the load of the floor structure,
In addition, since it is not necessary to consider the sound insulation function, it is sufficient to have a lower strength than the conventional one, and accordingly, the construction cost can be reduced.

Further, in order to achieve the above object, the present invention is characterized in that:
According to the invention described in claim 1, in the above-mentioned claim 1 or 2, the plurality of suspension rods are reinforced rods, and according to the characteristic, according to claim 1 or 2, In addition to the effect equivalent to the invention, the reinforcing rod is hardly stretched even if it is subjected to a tensile load and aging, so that the floor structure can secure the same accuracy for many years. it can.

According to a fourth aspect of the present invention, in order to achieve the above-mentioned object, in the above-mentioned first, second or third aspect, a plurality of large beams are connected to each other by a connecting rod. According to such a feature, the first, second, and third aspects are combined.
In addition to the same effects as the described invention, the strength of the floor structure can be further increased.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described based on embodiments of the present invention shown in the accompanying drawings.

First, referring to FIG. 1 to FIG.
First Embodiment The first embodiment is a case where the floor support structure of the present invention is applied to an apartment house having a concrete frame with a regular beam structure. FIG. FIG. 2 is a cross-sectional view taken along line 2-2 of FIG.
FIG. 3 is an enlarged view of a portion surrounded by a virtual line as viewed from the arrow 3 in FIG.
3 is an enlarged cross-sectional view taken along line 4-4 in FIG. 3, FIG. 5 is an enlarged view of an imaginary line surrounded by arrow 5 in FIG. 1, and FIG.
It is an expanded sectional view which follows a 6 line.

The concrete frame F having a regular beam structure, which constitutes the framework of the apartment house, extends in the horizontal direction and divides the building into a plurality of stories, ie, one story C1, two stories C2, and three stories C3.
, And a vertical frame portion Fv extending in the vertical direction and connecting the upper and lower horizontal frame portions Fh to each other.

The horizontal frame part Fh is provided with a floor slab Sf (which can be made as thin as possible by the features of the present invention) which partitions the living space Dw up and down. A main beam Bb is provided on both sides, and a main beam Bs is provided integrally and protruding downward at an intermediate portion thereof, thereby forming a so-called "positive beam structure". Further, the vertical frame portion Fv is a frame column 1 that is erected at four corners of the living space Dw.
And skeleton walls 2 and 3 connecting between the skeleton columns 1 arranged in parallel.

The living space Dw of each floor is divided into a space above the floor (living room) Su and a space below the floor (storage space) Sd by a floor structure Fr described later in detail.

Since the floor structure Fr has the same structure on each floor, the floor structure Fr on the second floor C2 will be described below with reference to FIGS. The body Fr is characterized in that it is floating, that is, floatingly supported on the concrete skeleton F, so as to avoid contact with the concrete skeleton F.

On the floor slab Sf of the concrete frame F, a plurality of large beams 5 are provided with the above-mentioned underfloor space Sd.
However, the large beams 5 are suspended on the frame F by a plurality of hanging rods described later, that is, the reinforcing rods 14 so as to avoid contact with the concrete frame F so as to avoid contact with the concrete frame F. Is done. A plurality of joists 6 are laid on the plurality of pulling beams 5 in a direction substantially perpendicular to these, in parallel with each other, and a floor plate 7 is laid on the joists 6.

Although not shown, an entrance which can be opened and closed by a lid is opened at an appropriate place of the floor structure Fr, and through which the person and luggage move between the above-floor space Su and the under-floor space Sd. Can be.

The pulling beam 5 is formed by bending a steel plate into a cross section of a Σ shape, is formed to be lightweight while securing sufficient rigidity, and the joist 6 is made of a prism material such as wood. Is formed.

The plurality of large beams 5 are connected to the concrete frame F in order to avoid contact with the concrete frame F.
Floating, that is, floating support. FIG.
As shown in the figure, a gap 16 is formed between the both end surfaces of each large beam 5 and the vertical body portion Fv, and the lower surfaces of both ends of each large beam 5 and the vertical body portion Fv are formed. Another gap 17 is also formed between the additional portion 9 and the additional portion 9. Between both end surfaces of each large beam 5 and the side surface of the vertical frame portion Fv, a vibration-proof rubber 11 as a vibration-proof cushioning material is interposed.
Between the lower surfaces at both ends of each large beam 5 and the upper surface of the striking portion 9, there is also provided a vibration-proof rubber 12 as a vibration-proof cushioning material. , Floor structure Fr
To avoid contact with the concrete frame F.

The both ends and the intermediate part of the plurality of large beams 5 are provided with a plurality of hanging rods suspended from the concrete frame F,
That is, it is supported by the reinforcing rod 14.

Hereinafter, the large beam 5 by the reinforcing rod 14 will be described.
The suspension structure of the first embodiment will be described in more detail by selecting the second floor C2 with reference to FIGS.
b, a plurality of reinforcing rods 14 spaced apart in the longitudinal direction.
Are connected by a hole-in anchor 18, and these reinforcing rods 14 hang down along the concrete skeleton wall 2, and their lower ends are connected to the ends of the heavy beam 5. Therefore, the edge portions of the plurality of large beams 5 on the concrete skeleton wall 2 side are suspended and supported on the regular large beams Bb of the concrete skeleton F by the plurality of reinforcing bars 14. As shown in FIGS. 1 and 5, the upper ends of the plurality of reinforcing rods 14 are also connected to the regular small beams Bs of the two-tier ceiling with a hole-in anchor 18 at intervals in the longitudinal direction. These reinforcing rods 14 hang down in the living space Dw, and their lower ends are connected to the middle part of the large beam 5. Therefore, the middle part of the plurality of heavy beams 5 is also suspended and supported on the small beams Bs of the concrete frame F by the plurality of reinforcing rods 14. Accordingly, the plurality of heavy beams 5 of the floor structure Fr of the second story C2 have a plurality of ends, both ends and an intermediate portion of which are suspended by the right and left large beams Bb and small beams Bs of the frame F, respectively. Floating support is provided by the reinforcing rods 14 of the book.

As shown in FIG. 4, the large beam 5 has a cross section Σ.
Upper and lower ends 5a and 5b, and a vertical intermediate portion 5c connecting the upper and lower ends 5a and 5b.
The lower end 14a of each rebar rod 14 formed with a male thread penetrates a rubber buffer 20 provided in the upper end of the large beam 5, and a nut 21 is screwed to the lower end thereof. Have been. Therefore, the force acting on the end of each large beam 5 is transmitted to the reinforcing rod 14 as a tensile force via the buffer. As shown in FIGS. 1 to 3, a plurality of studs 22 supported by the floor structure Fr are provided along side surfaces of the concrete skeleton wall 2 so as to avoid interference with the reinforcing rods 14. A wall plate 23, which is also supported by the floor structure, is joined to the outer surfaces of these studs 22.
The reinforcing rod 14 is accommodated between the concrete wall 3 and the concrete frame wall 2 and is not seen from the living space Dw side. The studs 22 do not contact the concrete frame F. As shown in FIGS. 1 and 5, a plurality of studs 25 supported by the floor structure Fr are provided below the small beams Bs so as to avoid interference with the reinforcing rods 14. Wall plates 26, which are also supported by the floor structure Fr, are provided along both sides of the studs 24, and the reinforcing rods 14 are accommodated between these wall plates 25, and are not seen from the living space Dw side.

When the pulling beam 5 is divided into right and left portions in the middle part of the living space Dw, that is, right below the small beams Bs, a plurality of reinforcing bars suspended in two rows on the small beams Bs. The divided ends of the large beam 5 are separately supported by the rods 14. Then, these divided ends are connected by an appropriate connecting member.

The plurality of heavy beams 5 constituting the floor structure Fr of the living space Dw are integrally connected by a plurality of connecting rods, that is, screw rods 28. As shown in FIGS.
Each of the large beams 5 is provided with a plurality of through-holes 29 arranged at intervals in the longitudinal direction thereof. , Some of them are selected, the screw rod 28 is skewed, and a pair of nuts 30 screwed into the screw rod 28 is
1 and screwed to the intermediate portion 5c of each large beam 5 from both sides thereof. In this embodiment, as shown in FIGS. 2 and 6, a plurality of large beams 5 are divided into left and right groups (right and left 4 beams).
And each of them is integrally connected by a plurality of screw rods 28.

It should be noted that all of the plurality of large beams 5 may be connected by the connecting rod 28.

In the living space Dw of each level, the reinforcing rod 1
By adjusting the length of 4, it is possible to appropriately change the volume ratio between the above-floor space (living room) Su and the under-floor space (storage space) Sd, which is partitioned by the floor structure Fr. As shown in FIG. 1, the volume of the underfloor space Sd on the first floor C1 and the third floor C3 is larger than the underfloor space Sd on the second floor. In addition, the one-story underfloor space S
For d, the underground space below the ground level GL can be used, and in this case, "backfilling" of the underground space becomes unnecessary.

As described above, in the first embodiment according to the present invention, in the living space Dw, the plurality of heavy beams 5 of the floor structure Fr are connected by the plurality of suspension rods, ie, the reinforcing rods 14.
Since the floor slab Sf on the floor is suspended by the main large beam Bb and the small beam Bs of the floor slab Sf, the contact between the floor structure Fr and the concrete frame F, which is a source of vibration noise from the floor up to the floor down, is generated. Thus, the propagation of the vibration noise from the upper floor to the lower floor can be reduced as much as possible, and the floor slab Sf includes the floor structure Fr.
This floor slab Sf is made as thin as possible (about 10 to 15 cm) than the slab thickness (20 to 27 cm) of the conventional floor slab because no load is applied and no sound insulation function is required. This makes it possible to increase the effective height of the living space Dw, further reduce the weight of the concrete frame F, improve seismic resistance and vibration control performance, and By reducing the amount of concrete and steel used, the cost of the building itself can be significantly reduced.

The anti-vibration rubbers 11 and 12 interposed between the large beam 5 and the concrete frame F suppress the swing of the large beam 5 and the concrete frame F caused by the vibration of the large beam 5. Contact can be avoided.

The anti-vibration rubbers 11 and 12 do not have a function of supporting the load of the floor structure Fr, and may not be omitted.

In the first embodiment, the case where the floor support structure of the present invention is applied to an apartment house has been described.
Of course, this can be applied to other concrete frame structures.

Next, a second embodiment of the present invention will be described with reference to FIG.

In the second embodiment, a floor support structure in a building according to the present invention is applied to a wooden detached house. FIG. 7 shows a two-story wooden structure provided with the floor support structure of the present invention. It is a longitudinal section of some detached houses.

In FIG. 7, a plurality of ceiling cross beams 40 on one level C'1 of a two-story wooden house erected on a foundation B are shown.
-1 is provided with a floor structure Fr that partitions the first floor C′1 and the second floor C′2, and has the same structure as the floor structure of the first embodiment. That is, a plurality of large beams 5 parallel to each other and a plurality of joists 6 mounted on these large beams 5 at right angles thereto.
And a floor plate 7 laid on the joists 6. The plurality of heavy beams 5 are integrally connected by a screw rod 28 passing therethrough.

A plurality of ceiling cross beams 40-2 on the second level C'2
, A plurality of suspension rods, that is, upper ends of the reinforcement rods 14 are suspended along the longitudinal direction thereof, and these reinforcement rods 14 are suspended.
Is suspended in the space between the outer wall 42 and the inner wall 43 or between the partition walls 44 of the building, and their lower ends are connected to the floor structure F.
r is connected to the end or middle part of the large beam 5.

Thus, the floor structure Fr is a ceiling cross beam 40-2 on the second floor C'2, which forms the framework of the building.
In addition, it is supported in a floating state, that is, in a floating state, and does not come into contact with a column, a beam, or the like constituting the skeleton. Anti-vibration rubbers 11 and 12 are provided between the end face of the large beam 5 and the ceiling cross beam 40-1 on the first floor C'1, and between the bottom surface of the large beam 5 and the ceiling cross beam 40-1.
Is interposed.

In the first floor C'1, a floor plate 47 is laid on the base 45 via the joists 46 on the foundation B as usual.

Thus, in the second embodiment according to the present invention,
The plurality of heavy beams 5 of the floor structure Fr on the second floor C′2 are as follows:
A plurality of suspension rods, i.
-2, so that contact between the floor structure Fr and frameworks such as columns and beams, which is a source of vibration noise from the upper floor to the lower floor, is avoided. The transmission of vibration noise can be reduced as much as possible, and the load of the floor structure Fr does not act on the framework such as the cross beam and the column under the floor structure Fr, and the sound insulation function is not provided. No problem.

Further, the vibration isolating rubbers 11 and 12 interposed between the pulling beam 5 and the framing ceiling cross beam 40-1 are:
The swing of the large beam 5 can be suppressed, and contact with the framework due to the vibration of the large beam 5 can be avoided.

The anti-vibration rubbers 11 and 12 have no function of supporting the load of the floor structure Fr, and may be omitted.

In the second embodiment, the case where the floor support structure of the present invention is applied to a wooden detached building is described. However, this is applied to a wooden collective building and a steel-framed detached building. Needless to say, this can also be performed.

Although the embodiments of the present invention have been described above, the present invention is not limited to the embodiments, and various embodiments are possible within the scope of the present invention. For example, in the above embodiment, the reinforcing rod 14 is used as the suspension rod.
Instead of this, another metal rod such as an aluminum alloy may be used. Also, in the above-described embodiment, the case where the heavy beam of the floor structure is suspended by the suspension rod has been described. May be suspended by a suspension rod. Further, the anti-vibration cushioning material such as the anti-vibration rubber of the embodiment may be omitted. Furthermore, as a support member of the floor of the floor structure, a large beam, a joist, and other known support members can be used. As the floor plate of the floor structure, a flooring floor, a tatami floor, and other known support members can be used. Can be used.

[0043]

As described above, according to the first aspect of the present invention, in a multi-story building having a concrete frame structure, the floor structure can avoid contact with the concrete frame. Propagation of the impact vibration applied to the upper floor to the living space downstairs can be reduced as much as possible, and the sound insulation performance can be greatly improved.
Since there is no load on the floor structure and no consideration is given to the sound insulation function, it can be made thinner than before, and the effective height of the living space can be increased accordingly, and furthermore, In addition, the vibration control performance can be improved, and the construction cost of the concrete frame can be reduced. Furthermore, since no support member is needed on the floor slab to support the floor structure,
An underfloor space free of obstacles can be easily formed, and the volume ratio between the above-floor space and the underfloor space can be freely set by adjusting the length of the suspension rod.

According to the second aspect of the present invention, in a building having two or more floors, the floor structure can avoid contact with a frame such as a beam or a column, and can be placed on a floor above the floor. Propagation of the impact vibration to the living space downstairs can be reduced as much as possible, and the sound insulation performance can be greatly improved. In addition, since the frame does not receive the load of the floor structure and does not need to consider the sound insulation function, the frame is required to have lower strength than the conventional one, and the construction cost can be reduced accordingly.

According to the third aspect of the present invention,
In addition to the same effects as those of the first or second aspect of the present invention, since the reinforcing rods are hardly stretched even when a tensile load is applied thereto or over time, the floor structure has been used for many years. High accuracy can be ensured.

According to the fourth aspect of the present invention, in order to achieve the above object, in addition to the same effects as those of the first, second and third aspects, the strength of the floor structure is further enhanced. be able to.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a part of an apartment house (first embodiment).

FIG. 2 is a cross-sectional view taken along line 2-2 of FIG.

FIG. 3 is an enlarged view of a portion surrounded by a virtual line as viewed in the direction of arrow 3 in FIG. 1;

FIG. 4 is an enlarged sectional view taken along line 4-4 in FIG. 3;

FIG. 5 is an enlarged view of a portion surrounded by a virtual line as viewed in the direction of arrow 5 in FIG.

FIG. 6 is an enlarged sectional view taken along line 6-6 in FIG. 2;

FIG. 7 is a vertical sectional view of a part of a two-story wooden detached house (second embodiment).

[Explanation of symbols]

 5 Large beam 7 Floor plate 14 Hanging rod (reinforcing rod) 28 Connecting rod (screw rod) Dw Living space F Concrete frame Fr Floor structure Sf Floor slab

Continued on the front page F term (reference) 2E001 DF07 DH37 EA01 EA08 FA13 FA71 GA02 GA55 GA62 GA77 HB02 HE01 LA01 LA11

Claims (4)

[Claims] In a multi-story building having a concrete skeleton structure, a living space (Dw) is separated from an under-floor space (Su) by a floor structure (Fr) provided on a floor slab (Sf). The floor structure (Fr) is divided into a space (Sd), and the floor structure (Fr) includes a plurality of heavy beams (5) arranged on one plane and a floor plate (7) laid thereon. The pulling beam (5) is supported in a floating manner by a plurality of suspension rods (14) suspended from the concrete frame (F), and the floor structure (Fr) is connected to the concrete frame (F). A floor support structure for a building, wherein contact is avoided. 2. In a building having two or more floors, a floor structure (2) having two or more floors and divided into each floor is provided on a plurality of large beams (5) arranged on one plane.
The lifting beam (5) is supported in a floating manner by a plurality of suspension rods (14) suspended from a ceiling frame, and the floor structure (Fr) is A floor support structure for a building, characterized in that contact with a skeleton such as is avoided. 3. The floor support structure in a building according to claim 1, wherein the plurality of suspension rods (14) are reinforced rods. 4. The building according to claim 1, wherein the plurality of heavy beams (5) are integrally connected by a connecting rod (28) for skewing them. Floor support structure.