JPH0424364A - Vibration-free device of floor and vibration-free floor - Google Patents

Abstract

PURPOSE:To improve execution efficiency by combining neighboring slide members with combining members, while loading slide members on holding bodies provided on a floor slab, so as to form slide compositions, and laying a floor panel over them. CONSTITUTION:On holding bodies 3 provided at specific positions of a floor slab 2 of a building, slide compositions 6 made by combining between slide members 4 with joint beams 5 are loaded. And between the slide compositions 6 and the floor slab 2, pull springs 7 are provided by fixing their both ends with L shape metals 65 of slide panels, and installing metals 67 fixed with bolts 66 to the floor slab 2. Then, struts 8 are stood on the slide compositions 6, and a floor panel 9 is load through the struts 8. Consequently, the execution efficiency and the maintenance can be improved.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a floor seismic isolation device and a seismic isolation floor that are disposed on a floor slab of a building and are used to damp horizontal vibrations caused by earthquakes, etc. It is related to.

(Prior art) As a conventional floor seismic isolation device or seismic isolation floor, for example, a column base is provided with a panel frame at the upper end and a plate at the lower end, and is laid between the plate and the floor. A sphere is placed between the pedestal and erected so that it can be displaced by a damper and a tension coil spring, and a column is formed by connecting these column bases with a rooting material, and a floor is placed on this column. It is known that it is constructed by mounting panels (5
1! (See Kaihei 1-92439).

(Problems to be Solved by the Invention) However, in the conventional type, it is necessary to provide a damper, a tension coil spring, etc. for each column pedestal, which increases the number of components, and therefore has low economic efficiency and workability. I have a problem. Furthermore, in order to prevent the column base from falling over, it is necessary to attach the root bridle material at the top, which causes problems in the installation of wiring.

Furthermore, since the running part of the sphere, that is, the pedestal, has a running surface on the upper side, dirt and foreign matter tend to accumulate on the running surface, which becomes an obstacle to the movement of the column base.In order to remove this obstacle,
There was a maintenance problem in that the running surfaces of all pedestals had to be constantly cleaned.

The present invention improves workability by assembling standardized components in a simple manner on-site, and eliminates the need to remove dust by adopting a structure in which the sliding surface of the sliding member faces downward. In addition, the supporting body with a swingable shoe holder allows the sliding member to be maintained horizontally regardless of the inclination of the floor slab. The purpose of the present invention is to provide a seismic isolation device for a floor and a seismic isolation floor that can operate reliably even when wiring is performed.

(Means for Solving the Problems) In order to achieve the above object, the floor seismic isolation device of the present invention has the following features:
a plurality of supports disposed at predetermined positions of a floor slab; and a sliding area for sliding on the supports, and
A slide structure including a slide member placed in contact with the support body and having a damping effect due to friction, and a coupling member coupling adjacent slide members; the slide structure and a floor slab; It consists of a spring member disposed between the two.

On the other hand, the seismic isolation floor of the present invention includes a plurality of supports disposed at predetermined positions of a floor slab, and a sliding area for sliding on the supports, and
A slide structure including a slide member placed in contact with the support body to produce a damping effect due to friction, and a coupling member coupling adjacent slide members; the slide structure and a floor slab; and a floor panel laid on the slide structure via a support.

The support body includes a dimple base having a spherical support surface, a shoe holder that is slidably supported on the support surface of the dimple base and is swingable in each direction, and is held by the shoe holder. It can be composed of a friction material.

Furthermore, a cable stocker can be provided which is supported by the coupling member of the sliding structure.

(Function) A floor seismic isolation device having such a configuration is constructed by placing the sliding members on a support provided on the floor slab of a building, and connecting adjacent sliding members with a connecting member. The ease of construction is improved by using a simple on-site fastening method for each component, such as forming a structure. In the seismic isolation effect of this floor seismic isolation device, the displacement of the sliding structure caused by horizontal vibrations exerted on the building by earthquakes, etc. is caused by sliding with Coulomb friction between the sliding member and the support, and the sliding It is damped by the action of the spring support relationship between the structure and the floor slab. Furthermore, since the sliding surface of the sliding member faces downward, dust and foreign matter do not adhere to the sliding surface, eliminating the need for cleaning and improving maintainability.

Next, the seismic isolation floor, which is constructed by laying a floor panel on top of the sliding structure, has the effect of the seismic isolation device for the floor, as well as a column to support the floor panel, whose lower end is a fulcrum. Due to the structure in which the pillars can be erected in a swinging manner, the pillars can be erected vertically regardless of the inclination of the sliding member, making it possible to lay floor panels accurately and improving workability. can be done.

Furthermore, when the floor slab is inclined, the dimple base of the support body is inclined together with the floor slab, but the shoe holder supported by the dimple base can be held so that its upper surface is always horizontal. so that the sliding member is not influenced by the inclination of the floor slab.

Furthermore, by arranging cable stockers that can be supported by coupling members at necessary locations, wiring cords are prevented from becoming an obstacle to the operation of the slide structure.

(Example) Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

The seismic isolation floor 1 has a joint beam 5 between a support 3 disposed at a predetermined position of a floor slab 2 of a building and a slide member 4.
a slide structure 6 which is connected to each other and configured by placing each slide member 4 on a support 3; and a retraction spring 7 disposed between this slide structure 6 and the floor slab 2.
, a support column 8 erected on the slide structure 6 , and a floor panel 9 supported by the support column 8 and laid on the slide structure 6 .

The support body 3 includes a dimple base 10 fixed to the floor slab 2, a shoe holder 11 swingably supported by the dimple base 1o, and a shoe holder 11 held by the shoe holder 11.
For example, it is composed of a friction material 12 such as a Teflon shoe. The dimple base 1O is formed by press-molding a metal material and has a circular shape in plan view as a whole, and includes a foot portion 13 that is bonded to the floor slab 2 using screws or glue, and a lower part of the shoe holder 11. A spherical support surface 16 that supports the side portion 15 is formed. Shoe holder 1
1 is made of, for example, a self-lubricating resin material, and has a lower portion 15 having a spherical portion with the same curvature as the curvature of the support surface 16 of the dimple base 10, and a planar upper surface 14. .

The friction material 12 has a cylindrical shape, and the friction material 12 is inserted into the hole 17 provided on the upper surface 14 of the shoe holder 11, and the slide member 4 is designed with the ability of A to be released. The front plate 18 and the back plate 19, which are press-molded into a substantially rectangular shape, are overlapped and joined together by spot welding to form a slide panel 20.
A sliding plate 21 made of stainless steel is fixedly attached to the lower surface of the housing. Specifically, the surface plate 18 is formed with a conical column support section 23 in the center thereof, which is provided with a hole 22 in which the lower end of the column 8 is engaged. In the direction from 23 toward each corner, a beam support portion 24 having a mountain-shaped cross section is formed to which the joint beam 5 is engaged, and furthermore, a circular reinforcing rib 25 is formed to protrude.

The joint beam 5 is formed by bending to include a U-shaped channel portion 26 and a bent portion 27 extending laterally outward along the lower end of the channel portion 26 . The channel s26 has an insertion hole 3 of the beam support portion 24 of the slide panel 20 through which the bolt 42 is inserted.
2 and consistent communication 'EJ9Q J-pot k
A 9 - JW A 1 (The supporting surface 29 that is sensitive, and on the back side of this supporting surface 29, a surface portion 31 is provided on the support corresponding to the beam abutting portion 30 provided on the beam support portion 24. (See Figures 2, 3, and 7).Also, at the tip, there is a suppression plate for fixing a double floor base 33, which will be described later.
! ! 34 is formed. On the other hand, the bent part 27 has a horizontal part 4S35 and a vertical part 4 whose upper end is folded back with a curved surface.
It consists of 4. This horizontal portion 35 is provided with two front half-openings 36 and 37 at its ends, and two rear half-openings in the central direction of the joint beam 5, that is, at a location corresponding to the outer edge of the slide panel 20. 38.39 are provided. These half-opened parts 36 and 38 located on the outside of the horizontal part 35 have a larger protrusion amount than 37 and 39 located on the inside (see FIG. 4). In addition,
40 is a positioning hole fitted with a bar ring 47 provided at the end of the slide panel 20, and 41 is an escape groove for allowing the reinforcing rib 25 of the slide panel 20 to escape.

Here, the state in which the slide member 4 is supported by the support body 3 and the coupling structure between the slide member 4 and the joint beam 5 will be explained.

First, regarding the support body 3, even if the floor slab 2 is uneven and the dimple space 10 is installed in an inclined manner together with the floor slab 2 (see FIG. 5), the shoe holder 11 made of resin can The lower part 15 is closely and slidably supported on the support surface 16 of the dimple base 10 having the same spherical surface, and is swingable in each direction. It is possible to always maintain the moving surface 45 horizontally. Therefore, the slide member 4
By supporting the sliding plate 21 in close contact with the sliding surface 45 of the friction material 12, horizontal installation is always possible regardless of the inclination of the floor slab 2.

Next, the slide member 4 and the joint beam 5 insert the port 42 into the insertion hole 28 of the joint beam 5 and the insertion hole 32 of the beam support [24].
It is fixed by screwing and tightening a nut member 46 fixed to the back side of 24.

To explain in detail the state of these connections, the joint beam 5 is tightened by screwing with the port 42 and the nut member 46.
The receiver is the beam abutting part 30 of the surface part 31 and the beam support part 24.
are connected in close contact with each other.

At this time, the half-opened portions 36, 37, 38, and 39 formed in the bent portion 27 of the joint beam 5 have the following effects. When the slide member 4 and the joint beam 5 are on the same plane, that is, both are horizontal,
The front half-opened portion 36 and the rear half-opened portion 38 come into contact with the slide panel 20, and when the port 42 is fastened, these half-opened portions 36 and 38 allow the corresponding bent portions 27 to be bent to the same predetermined position. It is designed to be elastically deformed.

By the way, if there is a height difference between adjacent slide members 4 due to unevenness of the floor slab 2, etc., the joint beam 5 is inclined with respect to the slide panel 2o using the fastening portion of the port 42 as a fulcrum. . joint beam 5
When the slide ilKl#j-As is mounted in a state where it is raised, the front part of the joint beam 5 is brought closer by the slide panel 20, so that the bent part 27 near the front half-opening part 36 is further deformed, and on the other hand, the part of the geoind beam 5 closer to the center than the port 42 moves away from the slide panel 20, so that the rear half-opening part 3
Although the amount of deformation of the bent portion 27 near 8 is reduced, the contact between the rear half-opened portion 38 and the slide panel 20 is maintained. In this way, due to the spring effect due to the elastic deformation of the bent portion 27, the half-opened portion 36 of the joint beam 5.
38 and the slide panel 20 are always kept in contact regardless of the inclination of the joint beam 5. On the contrary,
When the joint beam 5 is lowered and attached, the amount of deformation of the bent portion 27 near the rear half-opened portion 38 increases, and the amount of deformation of the bent portion 27 near the front half-opened portion 36 decreases. The effect is the same as described above.

In addition, each half-opening part 37" formed inwardly
401+ When the bending part 27 is deformed by more than a certain amount due to the burden of the bill 36, 38 in the case of t, it comes into contact with the slide panel 20, and the load is applied due to the earthquake, etc. This is for supporting the vertical rib portion of the channel portion 26 of the joint beam 5.

In this way, the support body 3 is not provided with a height adjustment mechanism, and the structure is such that the difference in height between the slide members 4 is absorbed by the inclined attachment of the joint beam 5. At this time, the slide member 4 and the joint beam 5 are connected by one bolt 42, and the front and rear half-opened parts 36, 38,
Alternatively, all parts including the inner 37.39
Since the spring effect of 7 reliably brings the slide panel 20 into close contact with the sliding panel 20, the coupling is prevented from wobbling.

Furthermore, this coupling structure can suppress the generation of slight vibrations and sounds when the slide panel 20 is horizontally moved due to an earthquake or the like.

Assembling the slide structure 6 during construction of the seismic isolation floor 1, that is, the work of sequentially joining the slide member 4 and the joint beam 5, is performed by connecting the bar ring 47 provided on the slide member 4 and the joint beam 5. By fitting the holes 40 provided in the slide members 4 into each other, the dimensions between the adjacent slide members 4 are maintained with high accuracy, and an accurate square is formed by the joint beam 5, which improves workability. Very good. Further, by forming the joint beam 5 in this manner, the square shape formed by the joint beam 5 is prevented from being deformed by loads caused by earthquakes, etc., and a highly rigid slide structure 6 is provided.

Next, the support column 8 has a lower part consisting of a bolt member 48 and an adjustment nut 49 screwed thereto, and is swingably erected on the member 50 and the adjustment nut 49, and has a panel support on the upper part.
The support leg 52 is integrally provided with a support leg 52, and a panel presser 54 engages with a panel presser receiver 53 to tighten and fix the floor panel 9. This adjustment nut 4
Reference numeral 9 is a member whose height direction is displaced with respect to the bolt member 4B by a rotation operation, and includes a flange portion 55 that supports the lower end of the support leg 52, and a cone-shaped cylinder whose upper diameter is reduced. Since the support leg 52 is loosely engaged with the adjustment nut 49, the lower portion is erected upright with respect to the member 50 so as to be able to swing about its lower end as a fulcrum. Ru. Further, the support leg 52 is prevented from being removed by a bolt 58 that is screwed into a nut member 57 attached to the lower part of the support leg 52. Note that, as described above, the difference in height that exists between adjacent slide members 20 is absorbed by the joint beam 5, so in that case, it is not required that the support legs 52 be erected so as to be swingable. . However, if the height difference between adjacent slide members 20 exceeds the absorption range by the joint beam 5, the slide members 4 will be arranged in an inclined manner. At this time, the support leg 52 has a structure in which the lower end thereof is inclined together with the slide member 4 and is loosely engaged with the member 50.
Regardless of the inclination of the slide member 4, it can be installed vertically, thus improving the ease of construction and making it possible to construct an accurate structure. In addition, in the figure, 59 indicates a cap for covering the top of the panel presser 54.

Now, the lower part of this support 8 is the member 50, which is the double floor base 3.
3 to the slide member 4. The double floor base 33 is formed in a substantially cross-shaped plate shape, and has a bolt presser portion 6 in the center that presses the head portion of the bolt member 48 of the support column 8.
0 is provided, and a slide panel 20 is provided at a position around it.
A plurality of downwardly protruding half-opening portions 61 are provided that come into contact with the upper surface of the column support portion 23 . The lower part of the member 50 is fixed by the double floor base 33 by inserting each tip s62 between the beam supporting part 24 and the pressing part 34 of the joint beam 5, without using fastening means such as bolts. and,
This is done by fitting the burring 63 formed on the double floor base 33 into the hole 64 formed on the slide panel 20. In addition, due to the elastic deformation of the tip part 62 with the half-opening part 61 as a fulcrum, the pressing part 3 when the joint beam 5 is inclined
4 is absorbed, and the joint beam 5 and the double floor base 33 come into close contact with each other due to the spring action, thereby preventing the occurrence of wobbling.

As explained above, the slide structure 6 on which the floor panel 9 is arranged is configured to be slidably supported by the support 3, and each slide member located on the wall side of the slide structure 6 4 and the floor slab 2, a tension spring 7 is installed in a state in which the tension spring 7 is balanced with the same tension spring provided on the opposing wall surface part, and the seismic isolation floor 1 is formed. (See Figure 1). The tension spring 7 is
Both ends are each fixed with nuts to an L-shaped fixture 65 bolted to the column support 24 of the slide panel 20 and an L-shaped fixture A67 fixed to the floor slab 2 with bolts 66.

To explain how the seismic isolation floor 1 damps horizontal vibrations caused by earthquakes, etc., when a relative displacement occurs between the slide structure 6 and the floor slab 2, the slide member 4
Due to the so-called Coulomb friction effect, which converts the moving energy into heat through the frictional engagement between the slide plate 21 and the friction material 12 of the support body 3, and the tension spring force 7 that attempts to hold the slide plate 21 at the initial stationary position, Vibration is suppressed and converged using a predetermined damping force.

In addition, among cables (not shown) for computers and the like installed on the floor panel 9, if a particularly large number of cables are in contact with the floor slab 2, the cables may be connected to the slide structure 6. Cable stockers 6B are installed at such locations to prevent large resistance from occurring between the base and the floor slab 2, which obstructs the proper movement of the slide structure 6 and prevents the function of the seismic isolation floor from being fulfilled. The cables are placed on top of the cables. The cable stocker 68 is formed to fit the square formed by the joint beam 5 of the slide structure 6, and its peripheral edge 69 is placed from above on the upper end of the vertical portion of the bent portion 27 of the joint beam 5. Its movement is restricted by the weight of the cables. In addition, in the case where the cable stocker 68 is not used and the cables directly pass over the joint beam 5, the upper end 70 of the vertical part of the bent part 27 of the joint beam 5 is formed with a round shape, as described above. Therefore, even if the cables move on the joint beam 5, they are prevented from being damaged.

As a second embodiment of the present invention, as shown in FIG.
A tension spring 7 is installed between the slide structure 6 and the floor slab 2.
It is also possible to provide a damper 70 and a damper 70 to provide damping.

(Effects of the Invention) As explained above, the floor seismic isolation device of the present invention consists of a sliding member and a joint beam on a support disposed at a predetermined position on a floor slab of a building. By configuring and assembling a sliding structure that is movable relative to the floor slab, each component can be made into a unit, and workability can be improved.

In addition, by structuring the sliding member so that its sliding surface faces downward, it is possible to prevent dirt from getting onto the sliding surface, which eliminates the need for cleaning to remove dirt and improves maintainability. can be achieved.

In addition to the effect of the above-mentioned floor seismic isolation device, the seismic isolation floor supports the pillars so that they can swing around the positions close to the slide members as fulcrums, so that the pillars can be supported regardless of the arrangement state of the slide members. It can always be installed vertically, improving workability.

Also, since the friction material of the support body can always be held so that its upper surface is horizontal regardless of the inclination of the dimple base, the sliding member is not affected by the inclination of the floor slab. Can be installed horizontally without any problems.

Furthermore, a cable stocker is placed on the square part formed by the joint beam of the slide structure, which prevents cables from coming into contact with the floor slab and ensures proper movement of the slide structure. .

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the construction state of the seismic isolation floor of the present invention, Fig. 2 is an exploded perspective view of the main parts, Fig. 3 is a sectional view of the same, and Fig. 4 is A of Fig. 3. -A cross-sectional view taken along line A, Figure 5 is a cross-sectional view showing how it is installed on an inclined floor slab, Figure 6 is an exploded perspective view of the slide member, and Figure 7 is a joint beam. FIG. 8 shows a second embodiment in which a cable stocker is provided and a damper and a spring member are provided between the slide structure and the floor slab. The plan view shown in FIG. 9 is taken from C-C in FIG.
It is a sectional view along the line. l... Seismic isolation floor, 2... Floor slab, 3... Support, 4... Slide member, 5... Joint beam, 6... Slide structure, 7... Tension Spring, 8... Support, 9... Floor panel, 10... Dimple base, 11... Shoe holder, 12... Friction material, 68... Cable stocker.

Claims (1)

[Claims] 1. A floor slab having a plurality of supports disposed at predetermined positions, and a sliding area for sliding on the supports, and
A slide structure including a slide member placed in contact with the support body and having a damping effect due to friction, and a coupling member coupling adjacent slide members; the slide structure and a floor; A floor seismic isolation device comprising: a spring member disposed between the slab and the slab; 2. The support body is held by a dimple base having a spherical support surface, a shoe holder that is slidably supported on the support surface of the dimple base and is swingable in each direction, and the shoe holder. The floor seismic isolation device according to claim 1, comprising a friction material. 3. Claim 1, further comprising a cable stocker supported by the coupling member of the slide structure.
Or the floor seismic isolation device according to claim 2. 4. It has a plurality of supports disposed at predetermined positions of the floor slab, and a sliding area for sliding on the supports, and
A slide structure including a slide member placed in contact with the support body and having a damping effect due to friction, and a coupling member coupling adjacent slide members; the slide structure and a floor slab; 1. A seismic isolation floor comprising: a spring member disposed between the slide structures; and a floor panel laid on the slide structure via supports. 5. The support body is held by a dimple base having a spherical support surface, a shoe holder that is slidably supported on the support surface of the dimple base and is swingable in each direction, and the shoe holder. The seismic isolation floor according to claim 4, characterized in that it consists of a friction material. 6. Claim 4, further comprising a cable stocker supported by the coupling member of the slide structure.
Or the seismic isolation floor according to claim 5.