JPS6229664A - Vibration-proof floor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention is designed to prevent vibrations and noise from the upper floor from being transmitted to the lower floor in buildings such as an exercise room on the upper floor and a hospital room or beauty salon on the lower floor. Regarding vibration-proof floors.

(Prior art) Conventional vibration-proof floors are constructed by arranging a vibration-proof damper on a slab, erecting a joist on top of the damper, erecting a joist on top of the joist, and placing floorboards on top of it. There is.

(Problem to be solved by the invention) According to the conventional example, the decking, joists, and floorboards are simply stacked on top of the damper installed on the slab, so the finishing allowance is the sum of the slab thickness and components such as the decking. Therefore, as long as the slab thickness is limited, the conventional example cannot be applied as is to buildings where the floor height is to be reduced, and there is also the problem that vibrations propagate throughout the slab.

An object of the present invention is to provide a vibration-isolating floor that has a small finishing allowance and can enhance the vibration-isolating effect.

(Means for solving the problem) The vibration-proof floor of the present invention includes a plurality of vibration-proof dampers 4, a support plate 5,
It includes a plurality of transmission members 8, a floor member 11, and a floor plate 15. The vibration dampers 4 are arranged vertically on the girder 1 at predetermined intervals in the beam width direction and in the beam longitudinal direction. The support plate 5 is provided with a support groove 5a located in the center thereof between the dampers 4 arranged in the beam width direction and provided along a direction intersecting the girder, and extends laterally from both sides of this groove. It is provided with a flange 5b placed on the damper.

The transmission frame 8 is installed on the inner surface of the support groove, a floor frame connects the transmission frames, and a floor plate is stretched over the floor frame. Vibration isolating materials 7 and 12 are provided between the transmission frame member 8 and the floor frame member 11, and between the floor frame member and the floor plate 15, respectively, to enhance the vibration isolation effect.

(Function) The above means has the following effect. Vibration and noise generated on the floorboard 15 on the upper floor are propagated intensively to the transmission frame 8 by the floor frame 11, and the transmission frame is transmitted to the vibration damper 4 via the support plate 5, and the vibrations and noise from the floorboard 15 are transmitted to the vibration damper 4 via the support plate 5. Vibration and noise are concentrated on this vibration damper, and the damper attenuates the vibration and noise. The damped vibration and floor load are caused by the large beam 1 located vertically below the damper 4.
receives it and absorbs it all.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, a girder 1 made of H-shaped steel supports a deck plate 2 on the upper surface of the girder, and a slab 3 is formed by pouring concrete onto the plate. On the upper surface of the slab 3 and at predetermined positions vertically above the girder 1, a set of four vibration-proof ball dampers 4 are arranged with each damper positioned at each vertex of a square. A support plate 5 is mounted on each set of ball dampers 4, which is made by bending a steel plate into a hat shape and having a wide support groove 5a in the center and flanges 5b on both sides, as shown in Figure 2.3. A damper is located at each corner of the flange, and is fixed with bolts 6. The support groove 5a extends in a direction intersecting the girder 1, is located between dampers located in the beam width direction, and has a bottom surface close to the top end of the slab. A band-shaped rubber pad 7 covering the entire length of the inner bottom surface of the support groove 5a is laid, and a transmission frame member 8 made of section steel is placed on this pad in a direction along the parallel plane of the support groove. is mounted, and the lower flange of the frame, the rubber pad 7, and the support plate 5 are stacked and fixed as a three-piece unit with bolts 6a. And each frame member 8 is the second and third
As shown in the figure, the upper half portion thereof is positioned to protrude above the groove 5a of the support plate 5, and is arranged at a predetermined interval between the spans of the girder 1 in the direction intersecting the beam. Each frame member 8 is connected with a joint 9 as necessary to ensure a constant length. The transmission frame member 8 has rib plates 10 extending in the width direction from both sides of the web at a distance slightly longer than that of the support plate 5, and these rib plates are also fixed to the upper and lower flanges. Each rib plate 10 has an end portion of a floor frame member 11 disposed in the same direction as the girder 1, which is fixed to the pole 1 at 6b. This floor frame material is made by cutting uniformly extruded steel members to a predetermined length, and is arranged parallel to the transmission frame members 8, 8, as shown in the third diagram, with the flat part facing upward. . A cedar joist 13 having a square cross section is installed on the upper surface of the floor frame material 11, with a groove-shaped rubber joist damper 12 underlying it.

This joist is arranged at right angles to the floor frame material 11, and a floor board 15 is stretched over the joist with a waste board 14 interposed therebetween.

Next, the operation of the present invention will be explained. Vibration and noise generated on the floorboards 15 on the upper floor are caused by the floor load as well as the wasteboards 14. Joist 1
3. It is transmitted from the floor frame member 11 to the transmission frame member 8 while being attenuated via the joist damper 12. Vibration and noise collected on the transmission frame 8 are attenuated by the rubber pad 7 and transmitted along with the floor load via the support plate 5 to each vibration-proof ball damper 4 supporting the support plate 5. The ball damper 4 attenuates vibration and noise and applies the floor load to the slab 3. However, a girder is located vertically below the ball damper, and the floor load and vibration are ultimately absorbed by the girder and transferred to the transmission frame 8. Since it is installed at the bottom of the groove of the support plate 5, the height of this structure can be absorbed by a predetermined height within the groove, making it possible to reduce the distance between the slab 3 and the floor plate 15, that is, the finishing allowance. This makes it possible to increase the thickness of the slab 3 by that much.

According to the experimental example, the conventional finishing allowance was about 352 mm, but in this example it is about 219 mm, and the thickness of the slab can be increased from the conventional 155 mm to about 195 mm. It became.

In the above example, the building is S construction, but it could also be SRC construction.
In addition, the vibration dampers are arranged in the width direction and the longitudinal direction of the girder. Therefore, in the above example, a set of four dampers is used, and a pair of left and right dampers are arranged at equal intervals in the longitudinal direction, but for example, they are arranged in a staggered manner. It is also possible to set one set of three.

(Effects of the Invention) According to the present invention, by employing the support plate, it is possible to reduce the finishing allowance, and therefore the floor height can be reduced, and the floor height is increased by the amount of the reduced finishing allowance. It is possible to increase the thickness of the slab without increasing the height of the slab, making it difficult to transmit images of the floors above, and all vibrations, noise, and floor loads transmitted from the floors above are ultimately Since the vibration is absorbed by the girders, the vibration of the slab is reduced, and the effects of noise and photography on the lower floors can be minimized.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of the front view, FIG. 2 is a sectional view taken along the line ■-■ in FIG. 1, and FIG. 3 is a plan view of FIG. 2, with the floorboard omitted. DESCRIPTION OF SYMBOLS 1... Large beam, 4... Vibration damper, 5... Support plate, 5a... Support groove 5b... Flange, 8... Transmission frame material 11... Floor frame material, 15...・・Floorboard. that's all

Claims (1)

[Scope of Claims] A plurality of anti-vibration dampers arranged vertically on a large beam at predetermined intervals in the width direction of the beam and in the longitudinal direction of the beam, and anti-vibration dampers arranged in the width direction of the beam. a support plate having a support groove located between the two and extending in a direction intersecting the girder, and having flanges extending laterally from both sides of the opening end of the support groove and installed on the vibration damper; A vibration-proof floor comprising a plurality of transmission members installed on the inner surface of a support groove of a plate, a floor member connecting the transmission members, and a floor plate supported on the floor member.