JPH0625525Y2 - Earthquake-proof structure of a house - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an earthquake-proof structure of a house, and particularly to a mass-produced house.

[Conventional technology]

In a house, there are vibrations from daily life items such as coolers and refrigerators, vibrations from indoor noises such as walking indoors and falling objects, and vibrations from external noises such as automobiles and trains, and wind and earthquakes. There is a vibration due to a natural phenomenon.

6 and 7 show conventional earthquake-proofing means for houses.
In FIG. 6, an elastic member 52 such as rubber is attached to the joist 51 of the floor 50.
The elastic member 52 is provided with a weight member 5 such as a gypsum board.
3 is placed on the joist 51 in a free state, and the vibration of the floor 50 is reduced by the elastic member 52 and the weight member 53. In FIG. 7, the rubber plate 56 is interposed between the floor 54 and the lower joist 55, and the vibration of the floor 54 is reduced by the rubber plate 56 and the glass wool 57.

[Problems to be solved by the invention]

In the above-mentioned conventional technique, the magnitude that can reduce the vibration energy transmitted through the structures such as the floor and the wall of the house is about 10 dB.

In recent years, the comfort of living in houses has become more and more demanded, and it is required to reduce vibration as one of the comforts, and the conventional technology cannot always obtain satisfactory results. .

In addition, in recent years, housings that make up the panels that make up the floors and walls into units and are manufactured in factories and that can be mass-produced by combining these panels at the construction site have become widespread. It is required to consider mass productivity.

An object of the present invention is to provide a seismic isolation structure for a house, which can greatly reduce the vibration and further improve the living comfort of the house and which is suitable for mass-produced houses.

[Means for solving problems]

Therefore, in the earthquake-proof structure of the house according to the present invention, in a house in which floors and walls are composed of panels, which is mass-produced, liquid is put inside the crosspieces such as joists forming the panels of the floors and / or walls. It is characterized in that a container is arranged.

[Action]

When the panel vibrates, the liquid contained in the container shakes at a frequency related to the liquid surface area, depth, etc. The shaking of the liquid reduces the vibration of the panel and reduces the transmitted vibration energy. According to this anti-seismic measure, it is effective against low frequency vibration up to about 120Hz, which greatly affects the living comfort of the house, and the vibration energy can be reduced to a maximum of 30 dB.

In addition, since the floor and wall panels of a house are unitized and manufactured in advance in the factory, the panel should be installed in the factory inside the crosspieces such as joists that make up the panel. It can be performed at the same time when manufacturing, and good workability suitable for mass-produced houses can be obtained.

Furthermore, since the container is provided inside the crosspiece such as joists,
Since it is not necessary to secure a special space for arranging the container in the panel, the container can be effectively arranged.

〔Example〕

FIG. 1 shows a house 1 to which an embodiment of the present invention is applied. This house 1 is a mass-produced house, and a floor 2 is obtained by combining panels that are unitized and manufactured at a factory in advance at a construction site. , 3 and walls 4, 5, 6 are constructed. These 2 to 6 become the constituent body 7 of the house 1, and the data regarding the vibration such as the natural frequency of the constituent body 7 are collected by the modal analysis. This modal analysis is performed as follows.

A single house 1 is built on a trial basis in a factory, and the constituents 7 of the house 1 shown in FIG. 2 are partitioned into a grid pattern as shown in FIG. 3, and sensors are installed at respective intersections 8.
Then, a heavy object such as a lump of clay is dropped on the floor, and the vibration frequency, amplitude, etc. of the component 7 generated at that time are detected by a sensor,
Collect data on the seismic motion of component 7.

By arranging this data, the vibration state of the structure 7 that is the same for each house 1, that is, the vibration mode, is found, and other than the natural frequency, etc., as shown in FIG.
The positions of the belly 9 and the node 10 in the vibration mode are found.

FIG. 4 shows a floor panel 11 constituting the floor 2 or 3, and the floor panel 11 comprises a floor surface material 12 and a plurality of joists 13 as juxtaposed beam members. A container 15 containing water 14 is arranged inside a predetermined joist 13. Specifically, a groove 16 whose both ends are closed is formed in a predetermined joist 13, and a container 15 made of plastic, stainless steel, or the like is incorporated into the groove 16 and water 14 is put in the container 15.
Put in. The surface of the floor covering 12 on the joist 13 side is subjected to water impermeable treatment by coating treatment or the like, and the container 15 is sealed by joining the floor covering 12 and the joist 13.

It is assumed that the water 14 put in the container 15 has a resonance frequency matched with the floor panel 11 based on the result of the modal analysis. This resonance frequency can be obtained by setting the water surface area and depth of the water 14, in other words, setting the length, width and depth of the groove 16. Further, the joist 13 in which the container 15 is arranged is provided at a position corresponding to the belly 9 in the vibration mode shown in FIG.

As a result, after building the house 1 by combining the floor panel 11 and the like at the construction site, the vibration is transmitted to the floor panel 11, and when the floor panel 11 vibrates, the water 14 is shaken due to resonance and the vibration energy is absorbed. The vibration of the floor panel 11 is reduced by the vibration absorbing action of the water 14. Water like this 1
The reduction of vibration by 4 is effectively realized in the low frequency vibration up to about 120 Hz which greatly affects the living comfort of the house, and the vibration energy can be reduced up to about 30 dB.

In addition, even if the natural frequency of the water 14 deviates from the natural frequency of the floor panel 11, or even if the position of the joist 13 in which the container 15 is arranged deviates from the belly 9 having the largest amplitude, the vibration The reduction is achieved to some extent effectively.

If the container 15 containing the water 14 is arranged on the joist 13 of the floor panel 11 as described above, the floor panel 11 is unitized and manufactured in advance in the factory as described above. When the floor panel 11 including the material 12 and joists 13 is manufactured, the container 15 can be arranged at the same time. In other words, the container 15 can be arranged as one of the floor panel 11 manufacturing processes in the factory. It can be performed as a good work suitable for a house.

Further, since the joist 13 is a member for increasing the rigidity of the floor panel 11 and has a relatively large thickness and width, even if the joist 13 is provided with the groove 16 for incorporating the container 15, The strength is secured, and the container 15 is arranged on the floor panel 11 by effectively utilizing the strength of the joists 13. Further, in the embodiment shown in FIG. 4, the container 15 does not appear outside the floor panel 11, which is advantageous in terms of space.

Further, since the container 15 is provided inside the joist 13, the container 15 can be arranged without securing a special arrangement space for the container 15 on the floor panel 11.

FIG. 5 shows another embodiment of a container containing water 14 (hereinafter referred to as a water container). In the following description, the same members as those in the above embodiment are designated by the same reference numerals.

The water container 17 according to the embodiment of FIG.
Joist 13 made of laminated wood consisting of 13B and bottom material 13C
Built into the. According to this embodiment, the manufacturing of the joist 13 and the work of assembling the water container 17 into the joist 13 can be performed at the same time, and the work can be simplified.

Although the water container is provided on the floor panel 11 in each of the above-described embodiments, the water container is manufactured in advance in the factory so as to form the walls 4, 5, and 6 shown in FIG. It may be provided on the wall panel or both the floor panel and the wall panel. Although water may be put in a water container at the factory, it may be put in a water container at a construction site of a house in consideration of transportability and handleability of the panel.
Further, in each of the above-described embodiments, the vibration is reduced by water, but a liquid other than this may be used. However, if a liquid having a low viscosity such as water is used, good vibration absorption characteristics can be obtained, and if water is used, it is advantageous in terms of handling and cost.

[Advantage of the Invention] According to the present invention, the vibration of the house can be reduced and the living comfort of the house can be improved, and at the same time, the work of arranging the container for containing the liquid can be performed in the house where the panel is manufactured in the factory and mass-produced. It can be implemented as suitable.

Further, according to the present invention, since the container for containing the liquid is arranged inside the crosspiece such as joists, the container can be arranged without securing a special arrangement space for the container on the panel.

[Brief description of drawings]

FIG. 1 is a sectional view of a house to which the embodiment of the present invention is applied, FIG. 2 is a perspective view of a house in which a modal analysis of vibration is performed, and FIG. 3 is a position where a sensor is installed when performing a modal analysis. FIG. 4 is a perspective view showing a house, FIG. 4 is a perspective view showing a first embodiment, FIG. 5 is a perspective view showing a second embodiment, and FIG.
FIG. 7 and FIG. 7 are vertical sectional views showing a conventional technique. 1 ... Housing, 2, 3 ... Floor, 4, 5, 6 ... Wall, 9 ... Vibration mode belly, 10 ... Vibration mode node, 11 ... Floor panel, 12
... Floor material, 13 ... joists, 14 ... Liquid water, 15, 1
7 ... Container.

Claims (1)

[Scope of utility model registration request] 1. In a house in which floors and walls are made up of panels and mass-produced, a container containing a liquid is arranged inside the crosspieces such as joists forming the panels of the floors and / or walls. The earthquake-proof structure of the house.