Slab vibration reduction structure

Abstract

To provide a slab vibration reduction structure capable of suppressing vibration more easily than before.SOLUTION: The slab vibration reduction structure is intended for existing buildings with a plurality of stories. A column 1 is provided between an upper surface of a lower floor slab 10 and a lower surface of an upper floor slab 20 in a predetermined story. Vibration of at least one of the slabs 10, 20 is reduced. A lower end of the column 1 is fixed to the upper surface of the lower floor slab 10. A height adjustment mechanism 2 capable of adjusting a height of the column 1 is installed at an upper end of the column 1. An upper surface of the height adjustment mechanism 2 supports the lower surface of the upper floor slab 20.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a vibration reduction structure for a slab. [Background technology]

[0002] It is known that a support pillar is provided between the lower floor slab and the upper floor slab to reduce vibration of the slab (see, for example, Patent Document 1). In Patent Document 1, a height adjustment mechanism is provided in the center of the support pillar, making it extendable and retractable. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2003-41684 Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the present invention is to provide a vibration reduction structure for a slab that can suppress vibration more easily than conventional structures. [Means for solving the problem]

[0005] [1] In order to achieve the above object, the vibration reduction structure of the slab of the present invention is as follows: For existing buildings with multiple floors, a support is installed between the top surface of the lower floor slab and the bottom surface of the upper floor slab on a specified floor to reduce vibration of at least one of the slabs, The lower end of the support is fixed to the top surface of the lower floor slab, and a height adjustment mechanism is installed at the upper end of the support to adjust the height of the support. The upper surface of the height adjustment mechanism is characterized by supporting the lower surface of the upper floor slab.

[0006] According to the present invention, since the height adjustment mechanism is provided at the upper end of the support, the weight of the support is not supported when adjusting the height with the height adjustment mechanism, and the height adjustment of the height adjustment mechanism can be easily performed. Furthermore, according to the present invention, since the height adjustment is easy, slab vibration can be reduced more easily than before.

[0007] [2] In addition, in the present invention, the height adjustment mechanism provided at the upper end of the support is arranged between the upper floor slab and the ceiling, and it is preferable that an opening is provided in the ceiling positioned around the support so that the height adjustment mechanism can be operated.

[0008] With this configuration, the height adjustment mechanism can be hidden in the ceiling, maintaining the aesthetic appearance of the room. Also, because an opening for operating the height adjustment mechanism only needs to be provided in the ceiling, there is no step that would be created by providing an opening in the floor, which is different from when the opening is provided in the floor, and it is possible to avoid obstructing walking.

[0009] [3] In addition, in the present invention, it is preferable that a jig is fixed to the upper surface of the lower floor slab with an anchor, and the lower end of the column is fixed by being connected to the jig with a bolt.

[0010] [4] Furthermore, in the present invention, it is preferable that a plurality of columns are arranged in a straight line, that linear spacers are arranged on top of the height adjustment mechanisms of the series of columns arranged in a straight line over the entire length of the installation range of the series of columns, and that the height adjustment mechanisms at the upper ends of the columns and the underside of the upper floor slab are joined via the spacers.

[0011] With this configuration, the slab is supported by multiple pillars arranged in a straight line via spacers, so the slab can be supported by a line rather than a point, and slab vibration can be reduced more effectively.

[0012] [5] In addition, in the present invention, it is preferable that a buffer material be sandwiched between the height adjustment mechanism at the upper end of the column and the underside of the upper floor slab. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is an explanatory diagram showing an embodiment of a slab vibration reduction structure of the present invention. [Figure 2] FIG. 2 is an explanatory diagram showing the state in which the columns are arranged in a straight line in the slab vibration reduction structure of this embodiment. [Figure 3] FIG. 10 is an explanatory diagram showing another embodiment of the slab vibration reduction structure of the present invention. [Figure 4] FIG. 10 is an explanatory diagram showing the fixed state of a spacer in a slab vibration reduction structure according to another embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0014] An embodiment of the slab vibration reduction structure of the present invention will be described with reference to Figures 1 and 2. The slab vibration reduction structure of this embodiment is applied to existing buildings with multiple floors to reduce slab vibrations that resonate due to the influence of nearby trains, automobiles, etc.

[0015] The slab vibration reduction structure of this embodiment comprises a plurality of square cylindrical pillars 1 (note that the pillars 1 may also be cylindrical) erected on the upper surface of the lower floor slab 10, a height adjustment mechanism 2 consisting of a screw jack attached to the upper end of the pillar 1, a spacer 3 arranged at the upper end of the height adjustment mechanism 2, and a thin buffer material 4 arranged between the spacer 3 and the upper floor slab 20.

[0016] The lower floor slab 10 and the upper floor slab 20 each include a slab body 11, 21 and minor beams 12, 22 that support the slab bodies 11, 21 from below. As shown in Figure 2, a plurality of pillars 1 are arranged in a straight line at equal intervals on the slab body 11 so as to be located on the minor beams 12 (or may be major beams) of the lower floor slab 10. Although only two pillars 1 are shown in Figure 2, there may be three or more pillars 1.

[0017] The lower end of the support column 1 is joined with a bolt 7 to a jig 6 fixed with an anchor 5 to the slab body 11 of the lower floor slab 10 .

[0018] Furthermore, in a building in which the slab vibration reduction structure of this embodiment is used, the joists 12 of the lower floor slab 10 and the joists 22 of the upper floor slab 20 are arranged so that they are located in the same place when viewed from above. The spacers 3 are rectangular tubular and are arranged along the joists 22 of the upper floor slab 20, with cushioning material 4 such as rubber sandwiched between them on the underside of the joists 22. The spacers 3 are supported from below by a plurality of height adjustment mechanisms 2. Thus, according to the slab vibration reduction structure of this embodiment, the upper floor slab 20 is supported from below by the supports 1 and height adjustment mechanisms 2 via the spacers 3, so that the upper floor slab 20 can be supported in a line rather than at a point, and the vibration of the upper floor slab 20 can be effectively reduced.

[0019] A ceiling 30 is disposed below the joists 22 of the upper floor slab 20 with a gap therebetween. The ceiling 30 is provided with through holes 31 through which the support columns 1 are inserted. The height adjustment mechanism 2 is disposed above the ceiling between the ceiling 30 and the joists 22 of the upper floor slab 20. By disposing the height adjustment mechanism 2 above the ceiling in this way, the aesthetic appearance of the room can be maintained.

[0020] The ceiling 30 is provided with an opening 32 that can be freely opened to adjust the height adjustment mechanism 2. By providing the height adjustment mechanism 2 above the ceiling in this way, it is only necessary to provide the opening 32 in the ceiling 30, and therefore there is no need to provide an opening in the floor, as compared to when the height adjustment mechanism 2 is disposed under the floor and an opening is provided in the floor, which makes it possible to avoid the occurrence of steps on the floor and to avoid obstructing walking.

[0021] A worker can open the opening 32 and adjust the height adjustment mechanism 2. Furthermore, because the height adjustment mechanism 2 is provided at the upper end of the support 1, height adjustment can be easily performed using the height adjustment mechanism 2 without bearing the weight of the support 1. Furthermore, according to the slab vibration reduction structure of this embodiment, the height of the height adjustment mechanism 2 can be easily adjusted, and therefore slab vibration can be reduced more easily than before.

[0022] In this embodiment, a screw jack has been described as the height adjustment mechanism 2, but the height adjustment mechanism of the present invention is not limited to this, and other mechanisms may be used as long as they are capable of adjusting the height.

[0023] Furthermore, in the vibration reduction structure for slabs of this embodiment, the support columns 1 are arranged along the joists 12, 22, but the vibration reduction structure for slabs of the invention is not limited to this. For example, as shown in other embodiments in Figures 3 and 4, the support columns 1 may be provided in positions where there are no joists 12, 22. In this case, it is preferable to also provide support columns 1 on the floor below, across the lower floor slab 10, and on the floor above, across the upper floor slab 20. In addition, in this embodiment, the buffer material 4 is described as being placed between the spacer 3 and the upper floor slab 20, but the buffer material of the slab vibration reduction structure of the invention may also be placed between the height adjustment mechanism 2 and the spacer 3. [Explanation of symbols]

[0024] 1 post 2 Height adjustment mechanism 3 spacers 4 Cushioning material 5. Anchor 6 Jig 7 volts 10 Lower floor slab 11 Slab body 12 Small beam 20 Upper floor slab 21 Slab body 22 Small beam 30 Ceiling 31 Through hole 32 Opening

Claims

1. For existing buildings with multiple floors, a support is installed between the top surface of the lower floor slab and the bottom surface of the upper floor slab on a specified floor to reduce vibration of at least one of the slabs, The lower end of the support is fixed to the top surface of the lower floor slab, and a height adjustment mechanism is installed at the upper end of the support to adjust the height of the support. The upper surface of the height adjustment mechanism supports the lower surface of the upper floor slab, Furthermore, the plurality of support columns are arranged linearly, a linear spacer is disposed on the height adjustment mechanism of the series of support columns arranged in a straight line, over the entire length of the installation range of the series of support columns; A vibration reduction structure for a slab, characterized in that the height adjustment mechanism at the upper end of the support column and the underside of the upper floor slab are joined via a spacer.

2. The vibration reduction structure for a slab according to claim 1, The height adjustment mechanism at the top of the support column is located between the upper floor slab and the ceiling. A slab vibration reduction structure characterized in that openings are provided in the ceiling around the support columns to enable operation of a height adjustment mechanism.

3. The vibration reduction structure for a slab according to claim 1 or 2, The jig is anchored to the top surface of the lower floor slab. A slab vibration reduction structure characterized in that the lower ends of the supports are fixed by connecting them to a jig with bolts.

4. A vibration reduction structure for a slab according to any one of claims 1 to 3, A slab vibration reduction structure characterized by a cushioning material sandwiched between the height adjustment mechanism at the upper end of the support column and the underside of the upper floor slab.

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