JPS6358991B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a seismic isolation floor, and particularly to a buffer floor that fills a space between a seismic isolation floor that undergoes relative displacement movement and pillars, walls, etc. of a building when an earthquake occurs.

Generally, a seismic isolation floor is installed inside a building, separating it from the walls and columns, in order to house equipment that needs to be protected from seismic vibrations in the event of an earthquake. , equipment, etc. are placed on this seismic isolation floor, but by having an appropriate structure, this seismic isolation floor can be used to prevent substantial shaking during an earthquake. Therefore, a certain amount of space is always left between the area around the seismic isolation floor and the walls and columns of the building that vibrate when an earthquake occurs. It is necessary to allow relative movement to occur freely in between. In this way, there is inevitably some space between the area around the seismic isolation floor and the pillars and walls of the building, so this space must be constantly buffered so that it is almost flush with the top surface of the seismic isolation floor. It is covered by the floor. Due to its nature, this buffer floor must have sufficient rigidity in the vertical direction to allow people to walk on it safely under normal conditions, and to allow transport vehicles and other vehicles to travel safely. , at the same time, in the horizontal direction,
It must have sufficient flexibility so as not to interfere with the relative movement between the seismic isolation floor and the pillars and walls of the building in the event of an earthquake.

Buffer beds that already have these properties include: (1) ones that are composed of a flexible plate-like body or a plate-like body that can be deformed as a whole;

(2) A structure in which the fixed floor and seismic isolation floor partially overlap each other.

(3) A non-flexible plate-like body is connected to a pillar of a building, etc., and the plate-like body is configured so that it can climb onto the seismic isolation floor in the event of an earthquake. Something that exists.

etc. are known. However, in the case of a flexible plate material like (1), it has poor compressibility in the horizontal direction, and furthermore, in the vertical direction, when stepping on it, the thickness decreases greatly and is dangerous. In the case of (2) and (3), there are no such drawbacks, but there are drawbacks such as a complicated configuration.

The present invention does not have any effect on the traffic of people or transport vehicles during normal times, but during an earthquake, it is compressed with a low load by horizontal force, impairing the performance of the seismic isolation floor. The purpose is to obtain a buffer bed that will not cause any damage.

In the present invention, in order to achieve this objective, the space between the pillars and walls of the building and the periphery of the seismic isolation floor has a honeycomb-shaped structure, and has a large rigidity in the thickness direction. However, it is characterized in that it is filled with a planar material with low rigidity in the lateral direction.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings showing embodiments thereof.

As shown in Figure 1, on top of the building beam, etc.
A fixed side floor 3 is installed horizontally adjacent to the walls and columns 2, and on top of it, a seismic isolation floor 4 of a known structure is placed at a distance D between the surrounding area and the wall 2. It is supported on the lower surface so as to be slidable in the horizontal direction. Within the distance D between the seismic isolation floor 4 and the wall etc. 2, there is a planar material (like a honeycomb) that has high rigidity in the vertical direction but low rigidity in the horizontal direction. A so-called "honeycomb structure" 5 (of which various types are commercially available) is placed on the fixed side floor so as to be able to slide horizontally on its lower surface, and on its upper surface, A suitable cover 6, such as a floor covering made of fiber material or rubber and having low rigidity in the horizontal direction, is arranged so as to be substantially flush with the seismic isolation floor 4. This honeycomb-shaped planar material, that is, the honeycomb structure 5,
As shown in an enlarged plan view in FIG. 2, a number of vertical partition walls ₅₁ made of a suitable material, for example, asbestos-based material, are arranged in a hexagonal shape. This partition wall 5
₁ , it bears a load in the vertical direction, and also has a structure that can be easily deformed or destroyed even by a small load in the horizontal direction.

Since the present invention has such a configuration,
In normal times, its characteristics ensure the safe passage of people on it and the unobstructed passage of transport vehicles, etc., but in the event of an earthquake, as shown in Figure 3, walls or pillars, etc. When the fixed side floor 3 moves in various directions and separates from the seismic isolation floor 4, the honeycomb-shaped material covered with the cover 6 or the honeycomb structure 5 moves in unison with the fixed side floor 3 and separates from the seismic isolation floor 4. A gap d occurs between them. On the other hand, when the wall etc. 2 approaches the seismic isolation floor 4,
As shown in the figure, the honeycomb-shaped material or the honeycomb structure 5 is easily compressed because it is weak against lateral loads, which is a major feature of the honeycomb structure 5. The performance of the seismic isolation floor 4 will not be impaired by destroying (or destroying) the seismic isolation floor 4.

In addition, as another embodiment of the present invention, as shown in FIG. Alternatively, as shown in Fig. ₆ , a plate-shaped fixed side floor 32 with a certain width is installed on the wall etc. 2 so as to have almost the same height as the seismic isolation floor ₄ . It is fixed horizontally and forms a recessed planar step 4 ₁ on the upper surface of the periphery of the seismic isolation floor 4 , and a part of the periphery is also slidably in contact with the lower surface of the fixed side floor 3 ₂ . Also, between the outer periphery of the fixed side floor 3 ₂ and the shoulder 4 ₂ of the recess 4 ₁ of the seismic isolation floor 4, a honeycomb-shaped planar member, that is, a honeycomb, is placed on the stepped portion 4 ₁ . Although it is conceivable to arrange the structure 5 and the cover 6 in a slidable manner, it is clear that these embodiments also perform exactly the same function as the embodiments shown in FIGS. 1 to 4. That's the place.

From the above, it can be seen that the buffer bed according to the present invention has the following effects.

1 Honeycomb-shaped materials, in other words, so-called honeycomb structures, can bear a large amount of weight in the direction of their thickness, and there is almost no decrease in thickness, so they do not pose any hindrance to the traffic of people or transport vehicles. However, in the event of an earthquake, it will be easily compressed (or destroyed) when horizontal force is applied, and therefore there will be no problem with the performance of the seismic isolation floor.

2 Honeycomb-shaped materials or honeycomb structures are easy to process, so they can be easily constructed to match the shape of a building, and can also be used indoors by covering the top surface. Being able to maintain the beauty of

3. The heights of the fixed side and seismic isolation floor side can be easily made the same.

etc.

[Brief explanation of the drawing]

FIG. 1 is a schematic cross-sectional view showing an embodiment of the present invention in a normal state, FIG. 2 is a partially cutaway enlarged plan view of a portion thereof, and FIG. FIG. 4 is a schematic diagram showing a state in which the wall and the seismic isolation floor are relatively displaced and separated; FIG. 4 is a diagram showing the same state in which they are close together; FIGS. FIG. 2 is a schematic cross-sectional view similar to FIG. 1; 1...Beams, etc., 2...Walls, columns, etc., 3...Fixed side floor, 4...Seismic isolation floor, 5...Honeycomb-shaped material, 6...Cover.

Claims (1)

[Scope of Claims] 1. The surroundings of a seismic isolation floor that is installed horizontally inside a building and makes relative reciprocating motion of a predetermined size within a fixed plane;
In a buffer floor that fills the space between the walls or columns of a building, the outer periphery of the seismic isolation floor and the inner periphery of the building's walls or columns should be spaced so that a predetermined distance is left between the two. A space of desired size is provided in the space, and inside this space,
A honeycomb-shaped planar material with high rigidity in the thickness direction but low rigidity in the lateral direction is used so that the thickness direction is vertical and the upper surface is almost flush with the seismic isolation floor. Buffer floor characterized by filling. 2. The buffer floor according to claim 1, wherein a planar cover made of a material with low rigidity in the horizontal direction is placed on the honeycomb-shaped planar material. 3. The buffer bed according to claim 1 or 2, wherein the planar cover is a carpet made of a fiber material. 4 A fixed side floor is installed adjacent to the walls and columns of the building, and the periphery of the seismic isolation floor is slidably supported on the lower surface thereof, and a honeycomb-shaped flat material is placed on the fixed side floor. A buffer bed according to claim 1, 2 or 3, which is slidably supported. 5. The buffer according to claim 4, in which a planar stepped portion is provided on the upper surface of the fixed side floor in a part adjacent to the wall or pillar of the building at approximately the same height as the seismic isolation floor. floor. 6. A flat fixed side floor is fixed horizontally to the wall or pillar of the building at almost the same height as the top surface of the seismic isolation floor, and the seismic isolation floor has a flat fixed side floor on the upper surface around it. A recess is provided, the upper surface of the recess is slidably disposed on the lower surface of the fixed side floor, and a honeycomb-shaped planar member is slidably disposed between the periphery of the fixed side floor. Buffer bed according to item 4.