JPH054510Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a shock absorber for a seismic isolation floor. This invention relates to a shock absorber used in the periphery of a seismic isolation floor to absorb dimensional relative displacement.

[Prior Art] In a computer room or the like where precision equipment such as computers is installed, a seismic isolation floor is used to protect the equipment installed in the room from vibrations such as earthquakes, and cables are routed. For this reason, it has recently been adopted to install the above-mentioned seismic isolation floor on the floor of the building in a double-floor type.

Figure 3 shows an example of the installation of a conventional seismic isolation floor.
The seismic isolation floor 4 on which the floor panel 5 is stretched is sized so that a required gap 3 is formed between it and the inside of the structural wall (hereinafter referred to as the building wall) 2 of the building. The seismic isolation floor 4 is supported on the floor (hereinafter referred to as the building floor) 1 by an isolator 6, and the gap 3 is formed between the periphery of the seismic isolation floor 4 and the inner surface of the building wall 2. As shown in an enlarged view in FIG. 4, in order to block the The closing plate 8 is superimposed so as to be slidable in the horizontal direction, and furthermore, the closing plate 8 is arranged on the upper surface of the peripheral part of the seismic isolation floor 4.
A holding plate 9 is provided with the support member 7 so as to form a gap with a thickness greater than or equal to It is configured as follows.

Therefore, when an earthquake occurs and lateral shaking occurs, the seismic isolation floor 4 supported by the isolator 6
Since the structure exhibits a behavior different from that of the building, a relative displacement occurs between the seismic isolation floor 4 and the building wall 2. Among the above relative displacements, the relative displacement in the horizontal direction that occurs between the seismic isolation floor 4 and the building wall 2 is between the closing plate 8 and the seismic isolation floor 4.
It can be absorbed by sliding between the gaps formed around the periphery of the .

[Problems that the invention aims to solve] However, earthquakes are not limited to horizontal shaking, but can also be vertical shaking, or a combination of horizontal shaking and vertical shaking, and the conventional seismic isolation floor shock absorber is not effective. If the closing plate 8 is fixed to the building wall 2 so that its position cannot be changed, the relative displacement in the vertical direction that occurs between the seismic isolation floor 4 and the building wall 2 cannot be absorbed. Ta. Therefore, the vibration in the vertical direction of the building is transmitted to the seismic isolation floor 4, which also vibrates, making it unsuitable for use as a floor for installing equipment that is sensitive to vibration.

Therefore, the present invention aims to improve the three-dimensional structure that occurs between the surrounding area of the seismic isolation floor and the building wall, including not only the horizontal direction but also the vertical direction.
The present invention aims to provide a shock absorber for a seismic isolation floor that can absorb dimensional relative displacement without difficulty.

[Means for solving the problem] In order to achieve the above object, the present invention closes the gap between the peripheral part of the seismic isolation floor supported by the structural floor of the building and the wall fixed to the building. A closing plate is formed to have a horizontal portion and a vertical portion, and a floor guide having a gap portion in which the horizontal portion of the closing plate is slidably housed is provided in the peripheral portion of the seismic isolation floor. The wall of the building is provided with a wall guide having a gap in which the vertical portion of the closing plate can be slidably accommodated.

[Function] By storing the vertical part of the closing plate in the wall guide and the horizontal part in the floor guide of the seismic isolation floor, the gap formed between the seismic isolation floor and the building wall is closed. be done. When a relative displacement occurs in the horizontal direction between the seismic isolation floor and the building wall due to an earthquake, it can be absorbed by sliding between the horizontal part of the closing plate and the floor guide, and
Relative displacement of the vertical portion can be absorbed by sliding between the vertical portion of the closing plate and the wall guide. As a result, even if the building walls shake, the shaking will not be transmitted to the seismic isolation floor.

[Example] Hereinafter, an example of the present invention will be described based on the drawings.

As shown in FIGS. 1 and 2, a gap 3 between a building wall 2 and a peripheral part of a seismic isolation floor 4 having the same configuration as the conventional seismic isolation floor shown in FIG. The closing plate 10 is formed to the size of the room surrounded by the building wall 2, and is made of a rigid material and has a T-shaped cross section.
0b are each made of a single plate and are continuous along the inner circumference of the room. In the surrounding area of the seismic isolation floor 4,
A floor guide 11 having a cavity 12 for slidably housing the horizontal portion 10a of the closing plate 10 is formed, and the closing plate 10 is provided within the building wall 2.
forming a wall guide 13 having a cavity 14 capable of vertically slidably accommodating the vertical portion 10b;
The approximately central part of the wall guide 13 is cut out horizontally to a required width, and with the vertical part 10b of the closing plate 10 housed in the wall guide 13, the horizontal part 10a and the building wall 2 are vertically displaced relative to each other. Also, make sure that the two do not interfere. Also, in the cavity 14 of the wall guide 13 formed in the building wall 2, there is a vertical portion 10b.
The springs 15 attached to the upper and lower ends are housed so that the closing plate 10 is always held at an intermediate position.

16 is a closing plate 10 inserted into the floor guide 11
The roller or rotatable ball has the function of improving the slidability of the horizontal portion 10a of the floor guide 11 and preventing crushing when the upper plate portion of the floor guide 11 is made thin.

When the vertical part 10b of the closing plate 10 is housed in the wall guide 13 in the building wall 2 over the entire circumference, the vertical part 10b of the closing plate 10 is connected to the springs 1 located above and below.
5, the horizontal part 10 of the closing plate 10 is held in the middle part of the wall guide 13 from the building wall 2.
A will be in a state of being extended inward. By accommodating this inwardly projecting horizontal portion 10a in the floor guide 11, the gap 3 between the peripheral portion of the seismic isolation floor 4 and the building wall 2 is closed by the closing plate 10.

If an earthquake occurs under the above conditions and horizontal shaking occurs,
Since the seismic isolation floor 4 and the building wall 2 behave differently in the horizontal direction, a relative displacement occurs in the horizontal direction between the periphery of the seismic isolation floor 4 and the building wall 2. In this case, relative displacement in the left-right direction (X-axis direction) can be absorbed by the horizontal portion 10a of the closing plate 10 located on the X-axis direction side sliding in and out of the floor guide 11. At this time, since the horizontal portion 10a of the closing plate 10 located on the front-rear direction (Y-axis direction) side and the floor guide 11 can slide in the X-axis direction, relative displacement in the horizontal direction can be absorbed. In addition, when a relative displacement in the horizontal direction occurs in the Y-axis direction, the horizontal portion 10a of the closing plate 10 located on the Y-axis direction side and the floor guide 11 slide in the in/out direction and the position on the X-axis direction side. This can be absorbed by sliding in the Y-axis direction between the horizontal portion 10a of the closing plate 10 and the floor guide 11.

Further, when vertical shaking occurs due to an earthquake and a relative displacement occurs in the vertical direction between the seismic isolation floor 4 and the building wall 2, it can be absorbed by sliding between the vertical portion 10b of the closing plate 10 and the wall guide 13, The closing plate 10 is connected to the horizontal portion 10a.
can be maintained in a state accommodated in the floor guide 11 around the seismic isolation floor 4, and the pitching of the building wall 2 is not transmitted to the seismic isolation floor 4.

Furthermore, if twisting in the rotational direction occurs between the seismic isolation floor 4 and the building wall 2 due to an earthquake, the closing plate 10
The horizontal portion 10a of the structure can be easily absorbed by freely sliding within the floor guide 11, and vibrations in the torsional direction of the building wall 2 are not transmitted to the seismic isolation floor 4.

Note that the present invention is not limited to the above-mentioned embodiments, and for example, the vertical portion 10 of the closing plate 10
Attach springs 15 to the top and bottom of b and close plate 1.
0 is held in the middle part and the restorability during pitching is improved, but the closing plate 10
Since the horizontal part 10a is held, the spring 15
Alternatively, the cross section of the closing plate 10 may be changed from a T-shaped cross section to an L-shaped cross section, and it goes without saying that various other changes can be made without departing from the gist of the present invention.

[Effects of the invention] As described above, according to the invention, the horizontal part of the closing plate vertically housed in the wall of the building is slidably housed in the periphery of the seismic isolation floor. Since the gap between the seismic isolation floor and the surrounding area of the seismic isolation floor is closed, three-dimensional relative displacement in the horizontal and vertical directions and twisting in the rotational direction that occur between the seismic isolation floor and the building wall can be easily avoided. It has the excellent effect of being able to absorb and buffer vibrations from the building side so that they are not transmitted to the seismic isolation floor.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of the main parts showing an embodiment of the present invention.
Fig. 2 is an overall perspective view showing the relationship between the seismic isolation floor and the closing plate, Fig. 3 is a sectional view showing an example of a conventional seismic isolation floor, and Fig. 4 is a sectional view showing an example of a conventional shock absorbing device. be. 1... Structural floor of the building (building floor), 2... Structural wall of the building (building wall), 3... Gap, 4... Seismic isolation floor,
8, 10...Closing plate, 10a...Horizontal part, 10b
... Vertical section, 11... Floor section guide, 13... Wall section guide.

Claims (1)

[Scope of utility model registration request] A closing plate is formed to have a horizontal part and a vertical part to close the gap between the peripheral part of the seismic isolation floor supported by the structural floor of the building and the wall fixed to the building, and the plate is formed to have a horizontal part and a vertical part. A floor guide having a gap in the peripheral portion for slidably housing the horizontal portion of the closing plate, and a floor guide for slidably housing the vertical portion of the closing plate on the wall of the building. A shock absorbing device for a seismic isolation floor, comprising a wall guide having a cavity.