JPH065471Y2 - End structure of seismic isolation floor panel - Google Patents

Description

[Detailed Description of the Invention] [Industrial application] The present invention relates to an end structure of a floor panel as a movable part in a base isolation floor structure against external vibration such as an earthquake of a building.

[Conventional technology]

To make the floor a seismic isolation structure, a movable part such as a floor panel is formed above the concrete floor that will be the fixed part, and a seismic isolation mechanism such as a spring or bearing is installed between the movable part and the fixed part. , This supports the movable part.

FIG. 4 shows an example of such seismic isolation mechanism A.
Is a concrete floor as a fixed part, 2 is a floor panel as a movable part, and the floor panel 2 is a joist 3 made of steel frame.
It is supported via the support leg 4.

On the other hand, a conical recess 5 is formed in the concrete floor 1, and a large diameter steel ball 6 as a bearing is placed therein.

The steel ball 6 is rotatably held in spherical receiving members 8a, 8b fitted inside the lower portion of the central body portion 7 with a snap ring 26, and the upper surface of the steel ball 6 is held inside the central body portion 7. Numerous small diameter steel balls housed in
Abut.

The lower portion of the central main body portion 7 is divided into two parts so that even if the large-diameter steel ball 6 moves up and down the conical recess 5 to move up and down, the vertical movement is not transmitted to the joist 3. , And the spherical support 8a is fitted vertically.

A flat plate member 10 is provided so as to project from the lower outer periphery of the lower portion of the central main body portion 7, and a tubular member 11 is slidably fitted on the upper portion of the central main body portion 7 to provide an upper surface plate of the tubular member 11. A coil spring 13 is arranged between the outer peripheral protruding portion of the body 12 and the plate body 10.

Further, a flange 14 is provided so as to project from the top plate 12 of the tubular body 11, and this portion is bolted to the joist 3.

In this case, at the time of an earthquake, the entire building shakes together with the ground surface, the concrete floor 1 also vibrates in the same manner, and a horizontal relative displacement occurs between the concrete floor 1 and the floor panel 2.

However, the steel ball 6 having a large diameter rolls in the conical concave portion 5, and as a result, acts to lengthen the cycle due to external vibration and reduces the sway, so that the upper floor panel hardly vibrates. .

By the way, there are vertical vibrations as well as horizontal vibrations due to earthquakes, which are isolated by the coil spring 13.
Therefore, the floor panel 2 is three-dimensionally isolated by the steel ball 6 and the coil spring 13.

The above shows one example of the seismic isolation mechanism. In addition to this, various seismic isolation mechanisms can be considered by combining bearings and springs, and further vibrations can be achieved by combining an oil damper and a magnet damper. The conversion of energy into heat energy is also performed.

[Problems to be solved by the device]

The floor panel, which is movably supported by bearings as described above, has excellent seismic isolation performance and moves in the horizontal direction only by applying a small force.

Therefore, it may move even when a horizontal force other than an earthquake is applied, such as walking of a person in normal times, which is extremely inconvenient.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an end structure for a floor panel that eliminates the disadvantages of the conventional example and can exhibit a seismic isolation effect by not moving during normal operation and horizontally moving only during an earthquake.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the present invention has a support member in which an end portion of a floor panel supported by a seismic isolation mechanism such as a bearing is hung on a pillar standing on a fixed portion of the floor and a connecting member between the support members. A horizontal panel that is placed on the floor and that projects from the wall is superposed on the end of the floor panel, and a through hole is formed between the end of the floor panel and the horizontal panel, and the shaking of the floor panel is constant in this through hole due to an earthquake. The gist is that the floor panel and the horizontal panel are connected by inserting the pin designed to be broken when the above force is applied.

[Operation] According to the present invention, since the through hole is formed in the end portion of the floor panel and the horizontal panel, the end portion of the floor panel and the horizontal panel can be positioned at predetermined positions only by inserting the pin into the through hole. Can be connected.

Since the floor panel end and the horizontal panel are connected by the pins in this manner, they do not move even if a load is applied in the horizontal direction by a person walking or carrying luggage.

On the other hand, the pins are designed to break when the floor panel shakes due to an earthquake and a certain amount of force is applied, so if the floor panel reaches a certain acceleration due to external vibration due to an earthquake, the pins will not break. As a result, the seismic isolation mechanism works to provide effective seismic isolation.

〔Example〕

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

Fig. 1 is a vertical sectional front view showing an embodiment of an end structure of a seismic isolation floor panel of the present invention, and Fig. 2 is a partially cutaway plan view of the same as above, wherein 1 is concrete as a floor fixing portion. Floor, 2
Is a floor panel as a movable part, and 15 is a wall.

The floor panel 2 uses a processed aluminum panel, which is supported by a support leg 4 on a joist 3 at the center thereof.
Is supported on the concrete floor 1 by the seismic isolation mechanism A as described above, but since the details are as described above, the description will be omitted.

Supports around the concrete floor 1, that is, near the wall 15
16 are set up at appropriate intervals. In the figure, reference numeral 17 is a base plate for standing the pillar 16, and 18 is an anchor bolt.

A support member 19 made of a long rectangular pipe was laid on the upper end of the pillar 16 in parallel with the wall 15, and the support members 19 were connected by a connecting member 20 also made of a square pipe to assemble the whole in a lattice shape.

Then, the ends of the floor panel 2 are placed on the upper surfaces of the supporting member 19 and the connecting member 20.

Although there is a gap between the end of the floor panel 2 and the wall 15, the wall 15
A horizontal panel 22 was projected from the above, and the tip side of this horizontal panel 22 was superposed on the upper surface of the floor panel 2.

Further, through holes 21a are formed in the floor panel 2 and the horizontal panel 22,
21b is formed, and the floor panel 2 and the horizontal panel 22 are connected to each other through a pin 27 that is bent when a force is applied to the through holes 21a and 21b.

The pin 27 is designed to be bent when the floor panel 2 reaches a certain extent due to an earthquake or the like, and as shown in FIG. 2, every one of the horizontal panels 22 or every other one of the horizontal panels 22. Install. It should be noted that if the pin interval is wide, it is possible to adjust the size and thickness of the pins.

The horizontal panel 22 may be fixedly attached to the wall 15 at its end, but if it is rotatably attached via a hinge 23, it can be followed even when the floor panel 2 moves up and down. Become.

Although not shown, it is also possible to provide through holes in the supporting member 19 and the connecting member 20 to connect these to the floor panel 2.

In this way, the support member 19 and the connecting member 20 are mounted on the end portion of the floor panel 2 and supported by the pillars 16 therebelow.

Further, the gap between the floor panel 2 and the wall 15 is closed by the horizontal panel 22, and the horizontal panel 22 and the floor panel 2 are pin 27.
Fixed by.

Since the floor panel 2 is normally connected to the wall 15 via the horizontal panel 22, the floor panel 2 does not move horizontally even when a load is applied by walking or the like.

On the other hand, at the time of an earthquake, the pin 27 is broken and the floor panel 2 moves independently by the action of the seismic isolation mechanism A.

FIG. 3 shows the portion of the column 24 made of H-shaped steel.
Was fixed to this pillar 24 with a U bolt 25. By doing so, by fixing a specific support 16 to another support
It is possible to fix the entire 16 and the supporting member 19 and the connecting member 20 above it.

[Effect of device]

As described above, the end structure of the seismic isolation floor panel of the present invention is such that the floor panel installed horizontally by a seismic isolation mechanism such as a bearing does not move during normal times other than an earthquake, and only during an earthquake. It will be possible and effective seismic isolation will be obtained.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view showing an embodiment of an end structure of a seismic isolation floor panel of the present invention, FIG. 2 is a partially cutaway plan view of the same as above, and FIG. FIG. 4 is a partially cutaway front view showing an example of the seismic isolation mechanism. 1 ... Concrete floor, 2 ... Floor panel 3 ... Joist, 4 ... Support legs 5 ... Conical recess, 6 ... Large diameter steel ball 7 ... Central body, 8a, 8b ... Spherical support Tool 9 …… Small diameter steel ball 10 …… Plate body, 11 …… Cylinder body 12 …… Top plate body, 13 …… Coil spring 14 …… Flange, 15 …… Wall 16 …… Post, 17 …… Base plate 18 ...... Anchor bolt, 19 …… Supporting material 20 …… Coupling material, 21a, 21b …… Through hole 22 …… Horizontal panel, 23 …… Hinge 24 …… Pillar, 25 …… U bolt 26 …… Snap ring, 27 ……pin

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hiroshi Midorikawa, Hiroshi Midorikawa, 2-19-1 Tobita, Chofu-shi, Tokyo Kashima Construction Co., Ltd. Technical Research Institute (56) Reference JP 57-201463 (JP, A) Sho 53-60322 (JP, U) Actually opened Sho 60-31440 (JP, U)

Claims (2)

[Scope of utility model registration request] 1. An end portion of a floor panel supported by a seismic isolation mechanism such as a bearing is placed on a supporting member and a connecting member between the supporting members, which are hung on a pillar standing on a fixed portion of the floor. The horizontal panel protruding from the wall is superposed on the end of the floor panel,
Forming a through hole in the floor panel end and the horizontal panel,
The end of seismic isolation floor panel is characterized in that the floor panel and horizontal panel are connected by inserting a pin designed so that the floor panel shakes due to an earthquake when the force exceeds a certain level into the through hole. Construction. 2. The end structure of a floor panel for seismic isolation according to claim 1, wherein the horizontal panel is rotatably attached to the wall via a hinge.