JPH0678660B2 - Floor structure - Google Patents

Description

The present invention relates to a floor structure most suitable for incorporating a base isolation floor.

[Conventional technology]

2. Description of the Related Art There are known earthquake-proof and seismic isolation floors that support a floor plate with a vibration cycle changing device incorporating a stretchable or rolling member such as a spring or a bearing.

When the building receives an external vibration such as an earthquake, the vibration cycle changing device converts the vibration cycle of the building frame in which it is placed into one with a long amplitude, and as a result, most of the floor boards supported by the vibration cycle changing device are converted. It can be stable.

[Problems to be Solved by the Invention]

When such a seismic isolation floor is provided in a building, the seismic isolation floor has a displacement different from that of a wall as a building frame or a fixed floor connected to the wall, so it is necessary to cut the edge, and the engagement between the two It becomes a problem.

In this case, if a gap is formed between the seismic isolation floor and the skeleton, the effective area of the floor will be limited. Also, in order to close the gap, a plate as a separate slidable member was laid between the seismic isolation floor and the fixed floor connected to the wall. It will be bad.

An object of the present invention is to solve the above-mentioned inconvenience and to provide a floor structure capable of filling the space between the seismic isolation floor and a wall or a fixed floor connected to the wall without providing a step.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the present invention provides a flat plate made of a flexible material such as rubber or synthetic resin in a thickness direction between a wall or a fixed floor connected to the wall and a base isolation floor mounted on a vibration cycle changing device. In addition, a strong strut member is embedded in parallel at appropriate intervals, and a floor member that can be expanded and contracted only in the horizontal direction is arranged by receiving the vertical load from the upper surface by the strut member. is there.

[Action]

According to the present invention, the space between the wall or the fixed floor connected to the wall and the seismic isolation floor is filled to the same level with a stretchable floor member, and this floor member is, for example, even when a person is placed on it or an object is placed thereon. The load is supported by the strut members, so that the whole does not sink vertically.

On the other hand, when a horizontal force is applied by the earthquake to cause another displacement of the base-isolated floor, the floor member expands and contracts in the horizontal direction due to the change in the distance between the support members, and the floor member absorbs the cushioning material. Acts as.

〔Example〕

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a side view showing an embodiment of a floor structure of the present invention, in which 1 is a wall, 2 is a fixed floor connected to the wall 1, 3 is a vibration cycle changing device provided on a floor concrete 4, 5 Is a seismic isolation floor supported by the seismic isolation device.

In the present embodiment, the vibration cycle changing device 3 uses a spherical body 3b such as a steel ball, and the spherical body 3b is rotatably mounted on a tray 3a having a certain thickness with a conical recess formed on the upper surface.

Although not shown in detail, the spherical body 3b is provided with a support body 3c having an air spring on the bottom surface of a joist 9 supporting the seismic isolation floor 5 via the support legs 8 and is provided in the support body 3c. It is the one with the lower part exposed.

The fixed floor 2 and the seismic isolation floor 5 have a gap, but a pedestal 6 is provided so as to straddle between the fixed floor 2 and the seismic isolation floor 5, and the pedestal 6 can be expanded and contracted so as to connect the fixed floor 2 and the seismic isolation floor 5. The floor member 7 is provided.

As shown in FIGS. 2 and 3, the floor member 7 is a mat-type thick flat plate made of a flexible material 7a such as rubber or synthetic resin, and wood, synthetic resin, or metal in the thickness direction. Strong pillar members 7b made of the above materials were embedded in parallel at appropriate intervals.

In order to strengthen the combination of the flexible member 7a and the strut member 7b, the strut member 7b is formed with flanges 7c at the upper and lower portions, and the flanges 7c are exposed on the upper and lower surfaces of the flexible member 7a.

Further, the parallel state of the strut members 7b is not particularly limited, and the strut members 7b may be arranged so as to form a wavy line as shown in the drawing, or may be in a zigzag shape, a lattice shape, or the like. As described above, it is selected to be dense enough to support the vertical load applied to the floor member 7, and not to collide with the column members 7b when the floor member 7 is displaced in the horizontal direction.

The thickness of the floor member 7 is the same as that of the fixed floor 2 and the seismic isolation floor 5, and the surface positions of the upper surfaces thereof coincide with each other so that no step can be formed.

Next, the usage will be described.

The floor member 7 connects the fixed floor 2 and the seismic isolation floor 5 as a part of the floor during normal times without an earthquake. Then, even if a luggage is placed on this or a person walks, the vertical load received thereby is supported by the column member 7b and is not deformed in the vertical direction to sink.

This is the state of (a) shown in FIG. 4, but when an earthquake occurs, it contracts in the horizontal direction as shown in (b) of the same figure.

That is, when the horizontal force from the earthquake acts,
The fixed floor 2 and the seismic isolation floor 5 have different displacements, and the seismic isolation floor 5 has a period longer than that of the fixed floor 2 and less vibration due to the vibration period changing device 3.

As a result, the distance between the fixed floor 2 and the seismic isolation floor 5 changes, and when it narrows, the floor member 7 is also pushed from the left and right, but the floor member 7 contracts due to the change in the distance between the pillar members 7b. On the other hand, when the floor member 7 is restored based on the distance, the floor member 7 also extends from the contracted state and then returns.

Then, as shown in FIG. 5, it is possible to provide a carpet 10 as a floor finishing material on the floor member 7. In this case, both sides of the carpet 10 as shown in FIG. If it is fixed to the floor member 7 with, it will be deformed as shown in FIG.

In addition, although the said Example demonstrated the case where the floor member 7 was filled up between the fixed floor 2 and the seismic isolation floor 5, it is also possible to install it between the wall 1 and the seismic isolation floor 5 without the fixed floor 2.

〔The invention's effect〕

As described above, the floor structure of the present invention can fill the space between the wall or the fixed floor connected to the wall and the seismic isolation floor without providing a step, and the members in between can reduce the performance of the seismic isolation floor. It can be used as a floor during normal times.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the floor structure of the present invention, and FIG.
FIG. 3 is a plan view of a stretchable floor member used in the present invention.
FIG. 4 is a cross-sectional view taken along the line AA of FIG. 2, FIG. 4 is a plan view showing a state before and after deformation of the floor member, and FIG. 5 shows a state before deformation when a carpet is attached to the floor member. It is a side view which shows the state after a deformation | transformation. 1 ... wall, 2 ... fixed floor 3 ... vibration cycle changing device 3a ... pan, 3b ... sphere 3c ... support, 4 ... concrete floor 5 ... seismic isolation floor, 6 ... frame 7 ... … Extensible floor member 7a …… Flexible material, 7b …… Supporting member 7c …… Flange, 8 …… Supporting leg 9 …… Joist, 10 …… Carpet 11 …… Connecting material

Claims (1)

[Claims] 1. Between a wall or a fixed floor connected to the wall and a seismic isolation floor mounted on a vibration cycle changing device, in a flat plate made of a flexible material such as rubber or synthetic resin, in a thickness direction thereof and at an appropriate interval. A floor structure characterized in that a strong pillar member is embedded in parallel with each other, and a floor member that is capable of expanding and contracting only in the horizontal direction is arranged by receiving the vertical load from the upper surface by the pillar member.