JPH0735009Y2 - Floor structure for seismic isolation device - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention relates to a seismic isolation device configured to reduce vibration of an electronic device or precision mechanical device placed on a floor during an earthquake or the like. The present invention relates to a floor structure of a seismic isolated floor that suppresses shaking.

(Prior Art) FIG. 11 shows a conventional seismic isolation device, which is a structural floor of a building (a).
Slide plates (b) are laid on the slide plate (b) at regular intervals, and a ball bearing (d) mounted on a steel frame (c) is supported on each slide plate (b), and the slide plates (b) are mounted on the frame (c). Free access floor (f) to the pillar (e) fixed to
Is supported by the sliding plate (b) and the ball bearing (d) during an earthquake to suppress the shaking of the steel frame (c) due to the vibration, and the frame (c) prevents the rigidity of the free access floor. Hold. Furthermore, the space between the free access floor (f) and the steel frame (c) is maintained by the pillars (e), various pipes and wiring are provided in the space between the two, and equipment is provided on the free access floor (f). Configured to install the kind.

(Problems to be solved by the invention) In the conventional seismic isolation device, a sliding bearing that suppresses the shaking of the free access floor and a steel frame for maintaining the rigidity of the free access floor contribute to a majority of the cost of the device. Occupy a large space for the installation of these devices, and since the columns are installed by the intervals of the steel frame pedestals, the burden of the free access floor bearing area per bearing is large, and the plan shape is complicated. Is difficult to deal with.

The present invention has been proposed in view of the above problems of the prior art, and the purpose thereof is to simplify the structure and reduce the weight, to effectively use the indoor space, and to improve the existing structure. The point is to provide a floor structure in a seismic isolation device that can make a building intelligent without changing the skeleton.

(Means for Solving the Problems) In order to achieve the above object, the floor structure in the seismic isolation device according to the present invention is such that a sliding plate is laid on the surface of the structural floor of the building, and a sliding member is provided at the lower end. Installation of the first floor board, which is mounted and has the pillars hung vertically from the bottoms of the four corners, arranged on the structural floor in a checkerboard pattern according to the scale and shape of the floor, and the pillars on the sliding board on the same floor. The sliding member is placed, the second floor plate is disposed between the adjacent first floor plates, and the first and second floor plates are tightly connected to each other.

According to a second aspect of the present invention, the connecting ends of the first and second floor plates are formed in a notched shape, and one of the floor plates has a locking hole along the joint edge. The other floor plate is provided with a locking projection that is bonded to the locking hole along the bonding edge.

(Operation) According to the present invention, as described above, the first floor board having the pillars vertically extending from the lower surface of the four corners is arranged on the upper surface of the structural floor in a checkerboard pattern according to the scale and shape of the installation floor. By arranging a second floor plate between adjacent first floor plates and tightly connecting the first and second floor plates together, the first and second floor plates and the pillar are integrated to form a floor. The horizontal rigidity of is obtained.

Further, a sliding body is mounted on the lower end portion of each of the columns vertically extending from the first floor plate, and the sliding body is placed on a sliding plate laid on the lower surface of the structural floor. It causes slippage during vibration, suppresses the shaking of the free access floor, and exerts a seismic isolation effect.

According to a second aspect of the present invention, the phase cutout portions formed at the joint ends of the adjacent first and second floor plates are engaged with each other, and the engagement holes formed at the joint edges of one floor plate are By engaging the locking projections provided on the joining edges of the other floor plate, the floor plates are integrally joined, and the horizontal rigidity of the floor is increased.

(Example) Below, this school plan is demonstrated about the Example shown in figure.

(1) is a structural floor of a building, and sliding plates (2) are laid on the floor upper surface at predetermined intervals.

(3) is a first floor plate made of metal, cement plate, plastics material, or synthetic material of which pillars (4) are hung vertically from the lower surface of four corners, and (5) is the adjacent first floor plate ( A second floor plate made of the same material as the same floor plate (3) to be joined to 3), and a phase cutout portion that engages with the joining edge of the first and second floor plates (3) and (5). (3a) (5a) is provided, the first
Locking holes (3b) are lined up along the phase cutouts (3a) in the floor plate (3), and the locking holes (3a) are formed in the phase cutouts (5a) in the second floor plate (5). Locking protrusions (5b) that engage with (3b) are arranged in a row.

FIGS. 8 to 10 show the details of the support column (4), which is a horizontal partition plate (horizontal partition plate (4b) suspended from a mounting plate (4a) on the lower surface of the floor plate (3). 4c), a screw rod (4e) protruding from the top of the leg piece (4d) slidably fitted to the tubular piece (4b) is screwed into the lower end portion of the leg piece (4d). A ball bearing (4g) constituting the sliding body is mounted on a support piece (4f) fitted in the.

In the figure, (4h) is a bolt hole formed in the mounting plate (4a),
(4i) is an opening provided in the center of the mounting plate (4a), and by rotating the screw rod (4e) with a rotary tool inserted through the opening (4i), It is configured to adjust height.

The floor plate level adjusting device is constituted by the leg piece (4d) with the screw rod (4e) and the vertical tube piece (4b) having the horizontal partition plate (4c) in which the screw rod (4e) is screwed. There is.

Thus, the ball bearings (4g) attached to the lower ends of the columns (4) suspended from the four corners of the lower surface of the first floor plate (3) are the sliding plates () on the structural floor (1). 2)
According to the scale and shape of the installation floor so that they can be supported by (1) (see Fig. 2) and the adjacent first floorboard (3).
The second floor plate (5) is arranged between the first and second floor plates (3) and (5), and the phase cutouts (3a) and (5a) of the first and second floor plates (3) and (5) are engaged with each other. The locking hole (3a) of 3) is engaged with the locking projection (5a) of the second floor plate (5) to tightly connect the first and second floor plates (3) and (5), and thus the same. Floor board (3)
(5) is integrally connected to form a free access floor with high horizontal rigidity.

It should be noted that a tool inserted through an opening (4i) provided in a mounting plate (4a) of a column (4) vertically installed on the first floor plate (3) is projected on the top of the leg piece (4d). By rotating the screw rod (4c), the leg piece (4d) is slid along the vertical tube piece (4b) hung vertically from the mounting plate (4a). Can be adjusted.

Thus, when a vibration occurs in the structural floor (1) during an earthquake or the like, the sliding plate (2) of the structural floor (1) and the pillars (4) mounted on the sliding plate (2). ) Slip is generated between the ball bearing (4g) at the lower end and the swing of the free access floor is suppressed.

The first and second floor plates (3) and (5) engage the phase cutouts (3a) and (5a) provided at their respective joint ends as shown in FIG. ) May be tied up.

Further, the seismic isolation floor and, for example, Japanese Patent Application Laid-Open No. 2-167959 (Japanese Patent Application No. 63-322114) proposed by the applicant of the present invention, the title of the invention: immediately after the earthquake as shown in the seismic isolation stand, all the parts are old. By using a coil spring that returns to the position and a viscous damper that quickly stops shaking, a further seismic isolation effect is achieved.

(Effects of the Invention) According to the present invention, as described above, the first floor plate, in which the pillars having the slide bearings mounted on the lower end portions are suspended from the lower surfaces of the four corners, is laid on the structural floor and on the upper surface of the same floor. The sliding plates are arranged in a checkered pattern according to the scale and shape of the floor so that the sliding members at the lower ends of the columns are supported, and the second floor plates are arranged between the adjacent first floor plates, A free access floor having increased horizontal rigidity is formed by tightly connecting the first and second floor plates together, and the sliding support at the lower end of the column and the sliding plate at the upper surface of the structural floor make the free access floor of the free access floor during an earthquake or the like. The vibration can be suppressed, and the adverse effect of the vibration on the equipment placed on the floor can be prevented.

Further, according to the present invention, since the pillars vertically hung from the free access floor are directly supported on the structural floor, a stand for supporting the floor pillars as in the above-mentioned conventional structure is not required, so that the same stand can be installed. No space is required, the installation floor height is reduced, the indoor space is effectively used, and the construction cost is significantly reduced.

Further, according to the present invention, the free-access floor is unitized by vertically arranging the columns with sliding bearings on the lower surfaces of the four corners of the first floor plate, simplifying the construction, reducing the load concentration on the structural floor, and reducing the load to the structural floor. The stress is small and it is easy to adapt to changes in the scale and shape of the installation floor, and it can be installed on existing structural floors.

According to a second aspect of the present invention, the first and second connection end portions are provided with phase cutouts, and one of the floor plates has a locking hole along the joint edge, and the other has the locking hole. By providing a locking projection that engages with the locking hole along the joint edge of the floor plate of
The first and second floor plates are tightly connected to each other to increase the horizontal rigidity of the free access floor constituted by the respective floor plates.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of a floor structure in a seismic isolation device according to the present invention, and FIG. 2 is a plan view showing the arrangement of floor plates,
3 and 4 are plan views of the first floor board and the second floor board, respectively, and FIGS. 5 and 6 are vertical cross-sectional views showing the joint portions of the first and second floor boards, respectively. Inside The first floor board is shown in a cross section taken along line VI-VI in FIG. FIG. 7 is a vertical cross-sectional view showing another embodiment of the joint portion between the first and second floorboards, in parallel with FIGS. 8 and 9, and FIG. 10 is a side view of a column and a vertical side view, respectively. FIG. 11 is a plan view showing a floor structure of a conventional seismic isolation device. (1) …… Structure floor, (2) …… Sliding plate, (3) …… First floor plate, (3a) …… Comparative cutout, (3b) …… Locking hole,
(4) …… Post, (4a) …… Mounting plate, (4b) …… Vertical tube piece, (4c) …… Horizontal partition plate, (4d) …… Leg piece, (4e)…
… Screw rod, (4g) …… Ball bearing, (4i) …… Opening part, (5) …… Second floor plate, (5a)… Complementary part, (5
b) ... Locking protrusion.

Claims (2)

[Scope of utility model registration request] 1. A floor installed on the structural floor, wherein a sliding board is laid on the upper surface of the structural floor of the building, a sliding body is mounted on the lower end of the building, and columns are vertically installed from the lower surfaces of the four corners. Are arranged in a checkerboard pattern according to the scale and shape of the column, the slides of the columns are placed on the sliding plates on the same floor, and the second floor plates are arranged between the adjacent first floor plates. A floor structure in a seismic isolation device, characterized in that the first and second floor plates are tightly connected together. 2. A connecting end portion of the first and second floor plates is formed in a discontinuous shape, and one of the floor plates is provided with a locking hole along a joint edge, The floor structure in the seismic isolation apparatus according to claim 1, wherein a locking projection that engages with the locking hole is provided along the joining edge on the other floor plate.