JP2003041684A - Slab connecting structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a slab connecting structure which can prevent degradation of the insulating properties of vibrations of a slab and heavyweight impact sound without thickening the slab. SOLUTION: The slab connecting structure functions to suppress vibrations of the slab 4 on each story and generation of heavyweight impact sound of a multi-story building. According to the structure, a strut 7 having sufficient axial rigidity for coupling vertical vibrations of each slab, is erected between the upper and lower slabs 4, to thereby connect the upper and lower slabs 4 to each other. The strut 7 can vary its entire length by an expansion mechanism 9 thereof. The strut 7 can be incorporated in a partition wall.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for suppressing vibration of a slab on each floor of a multi-story building and suppressing generation of heavy floor impact sound.

[0002]

2. Description of the Related Art In recent apartment buildings, in order to secure a large effective ceiling height in a room and to cope with a high degree of free plan, it is apt to avoid the beam shape protruding from the ceiling in the dwelling unit. , Beams, especially small beams have been omitted or reduced as much as possible.

[0003]

However, omitting or reducing the number of beams causes the plate slab to easily vibrate as a whole because the slab has a substantially large area. Therefore, the habitability is not only deteriorated. In some cases, there is a problem in that the performance of shutting off heavy floor impact sound (a low-pitched sound, which is generated when a child jumps and bounces) to the lower floor, may be a problem due to a slight vibration of the slab.

In order to suppress the vibration of the slab and improve the insulation performance against the heavy floor impact sound, it is sufficient to increase the slab thickness to increase the areal density and the out-of-plane bending rigidity, but to increase the slab thickness. Is not preferable because it increases costs, lowers the effective ceiling height or floor height, and increases the weight of the entire building.

In view of the above circumstances, it is an object of the present invention to provide an effective structure capable of preventing the deterioration of the vibration and heavy floor impact sound blocking performance without thickening the slab.

[0006]

According to the invention of claim 1, there is provided a structure for suppressing vibration of slabs on each floor of a multi-story building and suppressing generation of heavy floor impact noise. It is characterized in that a pillar having sufficient axial rigidity to be formed is erected between the upper and lower slabs, and the upper and lower slabs are connected by the pillar.

A second aspect of the present invention is characterized in that, in the first aspect of the invention, the support column has a variable length due to a telescopic mechanism.

A third aspect of the present invention is characterized in that, in the first or second aspect of the present invention, the support column is incorporated in the partition wall.

[0009]

1 to 3 show an embodiment of the present invention. FIG. 1 is a partial sectional elevation view of a building adopting the connecting structure of the present embodiment, FIG. 2 is a plan view thereof, and FIG. 3 is a diagram showing the installation state of the columns, and FIG. 4 is a diagram showing a configuration example of the columns.

The building in the present embodiment is a multi-storey housing made of RC structure, reference numeral 1 is a pillar, 2 is a girder in the girder direction, 3 is a front wall, 4 is a slab, 5 is a common corridor, and 6 is a balcony. .

The above-mentioned slab 4 is substantially a beamless version, and the small beams are omitted in the ceiling part inside the dwelling unit, so that the effective ceiling height inside the dwelling unit is sufficiently large.
On the other hand, the entire slab 4 becomes one large-area diaphragm, which easily causes vibrations. As it is, the slab 4 slightly vibrates to lower the habitability and to block the heavy floor impact sound on the dwelling units on the lower floor. Therefore, in order to prevent this, in the present embodiment, the slabs 4 on each floor are connected to each other by columns 7 at approximately the center position.

The support column 7 has a small diameter and a sufficient axial rigidity, and as shown in FIG. 3, the mounting leg portions 8 provided at the upper and lower ends thereof.
Is closely attached to the upper and lower slabs 4 and is anchored to the slabs 4, and is erected upright between the upper and lower slabs 4 to connect the upper and lower slabs 4.
A steel pipe having an outer diameter of about 60 to 70 mm can be suitably used as the column 7, and it is preferable that the total length thereof be variable. The length of the strut 7 in the illustrated example is variable by an expansion / contraction mechanism 9 having a structure like a turnbuckle. After standing up there, by adjusting the extension mechanism 9 to slightly extend it,
Appropriate pressing force can be applied to the upper and lower slabs 4, and such installation work and adjustment work can be performed extremely simply and surely only by the telescopic mechanism 9.

As described above, by connecting the upper and lower slabs 4 by the pillars 7 installed on each floor, even if the slabs 4 on each floor easily vibrate, the vibration can be sufficiently suppressed, and the weight of the lower floor can be reduced. Since it is possible to sufficiently secure the floor impact sound blocking performance, it is not necessary to thicken the slab 4 to prevent vibration as in the conventional case.

Incidentally, it is most effective to set the position of the column 7 at a position where the amplitude of the slab 4 as the vibrating plate becomes the largest, that is, a position which is an antinode of vibration, and conversely becomes a node of vibration. It is not so effective to install it on the post at a position, so if the vibration characteristics are grasped in consideration of the area and shape of the slab 4 and the post 7 is installed at the position where the vibration can be suppressed most effectively. Of course, if necessary, a plurality of columns 7 may be installed on each floor.

In the above embodiment, the columns 7 are installed at the same position on each floor, and the columns 7 are continuously arranged vertically with the slab 4 interposed therebetween as shown in FIG. The installation positions of the columns 7 do not have to be the same,
As described above, the columns 7 may be installed at optimum positions on each floor. In addition, when the positions of the columns 7 are displaced above and below the slab 4, the slabs 4 are connected to the slabs 4 on the upper and lower floors at two positions, so that the positions of the columns 7 are aligned. It may be more effective than the case. Further, the columns 7 are not necessarily provided on all floors, and in some cases, it is possible to omit the columns 7 from being installed on a specific floor or to install the columns 7 every other layer.

Although there is no problem in terms of function even if the support column 7 is left exposed in the room, it is realistic to conceal it in terms of design. Especially, as shown by the chain line in FIG. If it is incorporated into the partition wall 10 provided in the above, the installation position of the pillar 7 is less restricted, and therefore the housing unit plan is not restricted because the pillar 7 is provided. In this case, by using a steel pipe having an outer diameter of about 60 to 70 mm as the support column 7 as described above, vibration of the slab 4 is suppressed while having an outer diameter dimension that can be incorporated into the partition wall 10 without any trouble. It is possible to secure sufficient axial rigidity, and there is no significant increase in the cost for material processing.

Furthermore, the present invention is not limited to the above-mentioned embodiment, and various applications and modifications are possible. For example,
The present invention can be applied not only to multi-story houses but also to multi-story buildings for any purpose, and can be easily carried out not only as a newly built building but also as repair or repair work for an existing building. Of course, the configuration and installation form of the support column 7 are arbitrary as long as the desired axial rigidity is obtained, and for example, the expansion / contraction mechanism 9 may have an appropriate configuration instead of the one exemplified in the above embodiment. Depending on the expansion mechanism 9
Can be omitted. Further, as the mounting leg portion 8, for example, as shown in FIGS. 4A to 4E, any shape such as a square shape, a circular shape, a rectangular shape, a three-pointed arrow shape, and a cross shape can be arbitrarily adopted. It is preferable that the mounting legs 8 are housed and hidden in the double floor and the double ceiling. Furthermore, it is possible to incorporate a damper mechanism for damping the vibration of the slab 4 into the support 7.

[0018]

According to the first aspect of the present invention, since the upper and lower slabs are connected by the pillars, the vibrations of the upper and lower slabs can be effectively suppressed by the pillars. Therefore, it is not necessary to increase the thickness of the slabs and the weight floor for the lower floors It is possible to ensure good impact noise blocking performance.

According to the second aspect of the present invention, since the entire length of the support column is variable by the expansion / contraction mechanism, the installation work of the support column can be easily performed by operating the expansion / contraction mechanism, and an appropriate pressing force is applied to the upper and lower slabs. Adjustment can be performed easily and surely.

According to the third aspect of the present invention, by installing the pillar in the partition wall, the installation position of the pillar is not restricted, and the housing unit plan is not restricted because the pillar is installed. .

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view of a building that employs a slab connection structure according to an embodiment of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is an enlarged view showing the installation state of the columns.

FIG. 4 is a view showing an example of a mounting leg portion of a column.

[Explanation of symbols]

1 pillar 2 large beams 3 frontier wall 4 slabs 5 common corridor 6 balcony 7 props 8 mounting legs 9 Telescopic mechanism 10 partition walls

Claims (3)

[Claims] 1. A structure for suppressing vibration of a slab on each floor of a multi-story building and suppressing generation of a heavy floor impact sound, and a strut having axial rigidity sufficient to couple vertical vibrations of each slab. A slab connection structure characterized in that it is erected between the upper and lower slabs and that the pillars connect the upper and lower slabs. 2. The slab connection structure according to claim 1, wherein the support column has a variable length due to a telescopic mechanism. 3. The slab connection structure according to claim 1, wherein the support pillar is incorporated in the partition wall.