JPH0739766B2 - 2-stage pendulum type horizontal vertical isolation device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a two-stage pendulum type horizontal and vertical seismic isolation device for reducing seismic force acting on a building.

(Prior Art) The present invention relates to an improvement of the invention of "horizontal and vertical seismic isolation device for multiple suspension structure", patent application number 61-305431 (hereinafter simply referred to as the seismic isolation device of the original invention).

The seismic isolation device of the original invention is a cylindrical support stand fixed to a foundation,
Supports the floating member and a compression member consisting of a cylindrical floating member arranged in a nest inside the support base at appropriate intervals in the front-rear and left-right directions, and a columnar supporting leg with the top fixed to the upper structure. It has a support device with a large suspension structure, which is made up of a tension member that is suspended from a table and suspends the support legs from the floating body. The tension member is made up of a number of flexible vertical suspension members, and each flexible vertical suspension member attaches the upper part of the support and the lower part of the floating body inside it, and the upper part of the floating body and the lower part of the support legs inside it. Each is connected.

It should be noted that one or more load bearing members out of the plurality of load bearing members including the compression member and the tension member are provided with the vertical stretchable portion. Therefore, the seismic isolation device can be deformed in any horizontal and vertical directions. The deformation of the seismic isolation device can be controlled by the vibration control device, and when a medium or large earthquake occurs, the seismic isolation device displaces the upper building relative to the foundation horizontally and vertically,
Reduces seismic forces acting on superstructures.

(Problems to be Solved by the Invention) Problem 1: The seismic isolation device of the original invention and the seismic isolation device of the present invention are
It is designed to be installed on the bottom floor of the building instead of pillars. Therefore, the smaller the cross-sectional area, the larger the effective area of the room, and the easier it is to use the room. Also,
Production costs will be lower, and transportation and assembly will be easier. In order to reduce the cross-sectional area of the seismic isolation device, a. b. Reduce the thickness of the floating body. c. Reduce the cross-sectional area of the support legs. d. Reduce the distance between the support and the floating body. e. Make the space between the floating body and the support leg narrow. There are methods such as
It is difficult to reduce the thickness of a and b in consideration of providing a vertically extending portion. Also, c cannot have its cross-sectional area below a certain limit for the same reason.
Although it is possible to narrow d and e to some extent if the performance of the vibration control unit is improved, it is necessary to allow a margin at present for safety. Therefore, in the case of the seismic isolation device of the original invention, its cross-sectional area is considerably larger than that of a column.

Problem 2: In the case of the seismic isolation device of the original invention, since an inspection work space is provided at the bottom of the device, an operator can enter the seismic isolation device and perform inspection and small-scale repair work. However, when disassembling and repairing the support stand, floating body and flexible vertical suspension that always support vertical load, a temporary structure for shouldering the vertical load must be installed outside the seismic isolation device. Since this temporary structure cannot be installed directly under the pillar, its construction is not easy. Also, when inspecting the inside of the seismic isolation device, the space between the support base and the floating body or the space between the floating body and the support leg is not so wide, so the inspection work above is not easy.

(Means for Solving Problems) Problem 1: Regarding the seismic isolation device of the original invention, a floating member is provided between the support base and the support legs. This is to lengthen the total length of the flexible vertical suspension to lengthen the natural period of the seismic isolation device and to use the floating body for the resonance avoidance mechanism that changes the horizontal natural period of the seismic isolation device. Is. On the other hand, in the seismic isolation apparatus of the present invention, there is no floating body, and the support leg is hung on the support base by the flexible vertical suspension member to which the suspension member relay ring is attached. The suspension relay ring is installed in the middle of the flexible vertical suspension that connects the upper part of the support base and the lower part of the support leg, and the flexible vertical suspension at the top of the suspension relay and the flexible vertical suspension at the bottom of the suspension are connected. Are arranged on a straight line. In the case of the seismic isolation device of the present invention, the relay ring restraint portion provided opposite to the suspension relay ring restrains the movement of the suspension relay ring, or releases the restraint to prevent the horizontal movement of the seismic isolation device. The natural period is changed to avoid resonance. Due to the absence of idlers, the seismic isolation device of the present invention is 15-20% smaller in diameter than the seismic isolation device of the original invention. The actuation device and the resonance avoidance device of the seismic isolation device of the original invention occupy almost the lower half space of the seismic isolation device, but in the case of the seismic isolation device of the present invention, the space occupied by these devices is less than 1/3. is there. Therefore, the seismic isolation device of the present invention has a long distance from the upper part of the support base to the lower part of the support leg, and does not require double installation of the flexible vertical suspension member unlike the seismic isolation device of the original invention. The required length of the vertical suspension can be taken sufficiently.

Problem 2: In the seismic isolation device of the present invention, a temporary column is mounted inside the support leg so as to be vertically movable. When disassembling and repairing the support base or the flexible vertical suspension, part of the horizontal actuator installed below the support leg is removed, and the temporary column is lowered and fixed to the support leg. At this time, the screws of the connecting portion of the flexible vertical suspension member are sequentially tightened, the support legs are slightly lifted, and after the temporary columns are installed, those screws are loosened so that the total vertical load is shouldered to the temporary columns. The installed temporary columns can be moved horizontally but cannot be expanded or contracted vertically, so to prevent vertical loads from being concentrated on the temporary columns due to vertical movement of the earthquake, the vertical direction of other seismic isolation devices should be maintained during the repair period. Deformation is constrained. The seismic isolation device of the present invention without a floating body is
Since a large space can be provided between the support base and the flexible vertical suspension member, normal inspection work performed from the inside of the seismic isolation device is also facilitated.

(Operation) The upper structure is supported by three or more seismic isolation devices installed on the foundation, and the connection between the upper structure and the foundation should be capable of relative displacement in both horizontal and vertical directions. Has been formed. When an earthquake does not occur, the seismic isolation device of the present invention is restrained from being deformed in both horizontal and horizontal directions by the horizontal and vertical actuators. Therefore, the upper building will not vibrate due to the vibration force other than the earthquake such as wind pressure. Even when a small earthquake occurs, the seismic isolation device of the present invention is restrained from being deformed, and at this time, the upper building vibrates together with the ground. Therefore, both horizontal and vertical seismic forces act on the superstructure, but this seismic force is so small that the superstructure, occupants, and installed equipment are not damaged.

When a medium or large earthquake occurs, the horizontal and vertical actuators work and the seismic isolation device becomes deformable in both horizontal and vertical directions. The activated seismic isolation device starts long-period horizontal seismic isolation vibration in which the flexible vertical suspension members above and below the suspension relay ring perform a pendulum motion together with the suspension relay ring, and at the same time, in all vertical directions installed on the bearing members. The long-period vertical seismic isolation vibration, in which the elastic part expands and contracts, begins. In this state, the upper building is separated from the earthquake motion and vibrates slowly in both horizontal and vertical directions with its own cycle. Therefore, no matter how severe the earthquake motion is, only a slight seismic force generated by this seismic isolation vibration acts on the upper structure. When the vibration period of the ground vibration changes and the long-period horizontal seismic isolation vibration is likely to resonate, the vibration control unit of the seismic isolation device moves the relay ring restraining unit to restrain the horizontal movement of the suspension relay ring. As a result, the seismic isolation device enters short-period horizontal seismic isolation vibration in which only the flexible vertical suspension material below the suspension material relay ring performs pendulum motion.
The resonance caused by the long-period horizontal seismic isolation vibration disappears. When entering the short-period horizontal seismic isolation vibration, the upper building almost vibrates with the ground, but since the horizontal seismic motion at this time is long-period vibration with small acceleration, the horizontal seismic force acting on the upper building is small. Becomes When resonance is likely to occur in the short-period horizontal seismic isolation vibration, the vibration control unit releases the restraint of the suspension relay ring and returns the seismic isolation device to the long-period horizontal seismic isolation vibration again to avoid resonance.

On the other hand, when resonance is likely to occur in the long-period vertical seismic isolation vibration, the vibration control unit restrains the expansion / contraction motion of the vertical expansion / contraction part of some load bearing members. In this state, the seismic isolation device starts short-period vertical seismic isolation with a short oscillation period, and the resonance due to the long-period vertical seismic isolation disappears. When entering the short-period vertical seismic isolation vibration, the upper building almost vertically vibrates together with the ground, but since the vertical seismic motion at this time is long-period vibration with small acceleration, the vertical seismic force acting on the upper structure is It will be minor. When resonance is likely to occur in the short-cycle vertical seismic isolation vibration, the vibration control unit makes the vertical expansion and contraction parts of all load bearing members expandable and contracts, and the seismic isolation device returns to the long-period vertical seismic isolation state and resonates. To avoid.

In this way, resonance is avoided by switching the horizontal or vertical vibration of the seismic isolation device from long-period seismic isolation vibration to short-period seismic isolation vibration or from short-period seismic isolation vibration to long-period seismic isolation vibration in accordance with seismic motion. While reducing the seismic force acting on the upper structure.

When the earthquake subsides, the seismic isolation device returns to its original shape due to the action of gravity, and the upper building returns to its original position. When the seismic isolation device returns to its original shape, the horizontal actuator and the horizontal actuator restrain the deformation of the seismic isolation device.

Like the seismic isolation device of the original invention, the seismic isolation device of the present invention allows an operator to enter the seismic isolation device for inspection work or repair work. In the case of the seismic isolation device of the original invention provided with the floating body, it is difficult to work on this part because the space between the floating body and the support base or between the floating body and the support legs is narrow. In the case of the seismic isolation device, since there is no floating body, the space between the support base and the support legs is large, which facilitates the work. In the case of disassembling and repairing a support table or a flexible vertical suspension member that supports a vertical load, the seismic isolation device of the present invention can extend a temporary column provided inside the support leg to support the vertical load.
When extending the temporary column, part of the horizontal actuator installed below the temporary column is removed, the sliding board is placed on the foundation, and the temporary column is installed on the sliding board. Since the temporary columns can be moved horizontally by the sliding board, even if an earthquake occurs, horizontal shearing force will not be concentrated on the seismic isolation device being repaired, and the horizontal seismic isolation function will be maintained. However, since the vertical load support part formed by the support leg and the temporary column does not have the function of expanding and contracting in the vertical direction, the vertical expansion and contraction function of the seismic isolation device that is not subject to repair is temporarily restrained during the repair period. It is necessary to prevent vertical loads from concentrating on the seismic isolation device inside.

(Example) FIG. 1 is a cross-sectional view taken along the line BB showing a part of a building in which the seismic isolation device of the present invention is installed, and FIG.
-A is a vertical cross-sectional view. The seismic isolation device of the present invention (1) (1) ...
The ... is mounted on the foundation (4) formed in the shape of a well below the pillar (3) of the superstructure (2), and the seismic isolation device (1) (1) ... is superstructured on top. Object (2) is installed. The connection between the upper structure (2) and the basement (5) has a structure that does not hinder the relative displacement of both in the horizontal and vertical directions.

FIG. 3 is a vertical cross-sectional view of the seismic isolation device according to the embodiment of the present invention.
The drawing is its CC cross-sectional view, FIG. 5 is its DD cross-sectional view, and FIG. 6 is its EE cross-sectional view. The seismic isolation device according to the embodiment of the present invention includes a support device and a vibration control device. The supporting device is a cylindrical supporting table (6),
A columnar support leg (7), a suspension member relay ring (8), a vertical suspension member (9) (9) with a ring spring for suspending the suspension member relay ring (8) on a support base (6), and support The leg (7) is formed by vertical suspension members (10) (10) with ring springs that suspend the suspension member relay ring (8). The support base (6) is an annular receiving base (11) installed on the foundation (4), and wheel-spring-loaded cylinders (12) (12) provided vertically on the receiving base (11). A cylindrical expansion and contraction tube (15) consisting of expansion and contraction columns (13) (13) and connecting materials (14) and (14) for connecting them, and a support ring (16) provided at the upper edge portion. It is formed by a truncated cone-shaped protruding portion (17) and an exterior material (18) provided outside the telescopic cylinder (15). FIG. 8 is an enlarged view of a part of the support base (6), where FIG. 8a is a horizontal sectional view, FIG. 8b is a GG vertical sectional view, and FIG. 8c is a HH vertical sectional view. Is. The ring-spring-loaded cylinder (12) has an inner ring (21) (21) with a conical surface inside a cylinder (20) whose bottom is sealed by a ring spring receiver (19), and an outer ring (22) ( twenty two)
Insert the ring springs (23) with the conical surfaces in contact with each other alternately and loosely insert the pistons (24) on top of the ring springs (23).
The cylinder (20) is filled with liquid. A distribution pipe (25) for flowing the liquid inside is attached to the lower part of the ring spring-inserted cylinder (12).
The extensible column (13) is formed by a guide tube (26) and a columnar body (27) inserted in the guide tube (26) so as to be vertically movable. The connecting member (14) has a concave curved surface that is in close contact with the ring-spring-loaded cylinder (12) on one side surface and a telescopic column (13) on the other side surface.
Columnar bodies each having a concave curved surface in close contact with, and are mounted between the wheel spring-inserted cylinders (12) and the telescopic columns (13) which are alternately arranged. Cylinder with ring spring (12)
(12) ……, expansion columns (13) (13) ……, and connecting members (14) (14) …… are installed in a cylindrical shape on the pedestal (11), and the outer side is an annular band. (28) (28) …… is tightened by. The protruding part (17) is placed on the upper part of the telescopic cylinder (15), and the pistons (24) (24) ... and the cylindrical bodies (27) (27) ... are protruded part (17). ) Is linked to. Spring (29) (29) on top of the exterior material (18)
A stretchable part (30) supported by ... is provided, and its upper end is in contact with the lower surface of the upper structure (2).

The support leg (7) is a columnar body (31) fixed to the upper structure (2), a telescopic tube coupling body (32) provided on the outer periphery of the upper portion of the columnar body (31), and the inside of the columnar body (31). A temporary column (33) mounted vertically movable to the inside, an expansion tube (34) fitted vertically outside the columnar body (31), and an expansion tube (34)
It is formed by a protrusion (35) connected to the lower end of the. The columnar body (31) is attached to the upper structure (2) by bolts, with the top flange (36) being in close contact with the upper structure (2). The expansion tube connection (32)
A short cylinder (37) installed in a cylindrical shape on the bottom surface of the flange (36).
(37) ... and an annular piston connecting plate (38) attached to their lower ends, and an annular cushion rubber (39) is provided outside the short cylinders (37) (37). It is provided. The telescopic tube (34) is composed of ring-spring-loaded cylinders (40) (40), which are alternately arranged in a cylindrical shape, and a connecting member (41).
, And annular bands (42), (42), which tighten the outside of the telescopic cylinder (34). The ring spring-loaded cylinder (40) is similar to that shown in FIG.
Ring spring receiver (19), cylinder (20), inner ring (21) (21) ...
The outer ring (22) (22), the piston (24) and the flow pipe (25) form a cylinder (20) filled with liquid. The connecting member (41) is a columnar body having concave curved surfaces on both sides which are in close contact with the ring-spring-loaded cylinder (40).
The telescopic cylinder (34) connects the ring spring bearings (19) (19) at the bottom to the upper end of the protrusion (35), and the pistons (24) (24) ...
It is installed by connecting the top of ... to the piston connecting material (38). An annular cushion rubber (39) is provided in the expandable cylinder (34) so as to face the suspension relay ring (8). The protruding portion (35) is formed by a truncated cone-shaped main member (44) provided with a support ring (43) at the lower end and a bottom plate (45), and a columnar body (of the support leg (7) ( It is loosely embedded in 31).

The vertical suspension member (9) with ring springs that connects the support base (6) and the suspension relay ring (8) is installed on the support ring (16) and the suspension relay ring (8) of the support base (6). The granular closed type universal joint (46) (46), the steel rods (47), (47), and the ring spring-inserted expandable body (48). Fig. 9 shows the granular closed type universal joint (46), steel rod (47), ring-spring expandable joint (4
8) and an enlarged view of the suspension relay ring (8), where FIG. 8a is a vertical cross-sectional view, FIG. 8b is a top view of the granular sealed universal joint (46) and the I-I cross section. FIG. 11 is a JJ horizontal sectional view of the ring spring-inserted expandable member (48), and FIG. 11D is a KK horizontal sectional view showing a part of the suspension relay ring (8). The granular closed type universal joint (46) is rotatably mounted inside the granular closed tube (50) and the granular closed tube (50) placed on the sliding surface (49) of the support ring (16). It consists of a pressure plate (51), a steel rod (47) attached to the pressure plate (51) by a nut (52), and a small-diameter sphere filled inside the granular closed cylinder (50) and a lubricant. It is formed by a group of particles (53).
The steel rod (47) is inserted into a conical through hole (54) formed in the support ring (16), and a protective cylinder is provided at a portion contacting the support ring (16) or the particle group (53). (55) is fitted. A pressure plate rotating part (56) having a spherical surface having a diameter slightly larger than the diameter of the pressure plate (51) is formed inside the granular closed cylinder (50), and the pressure plate has a spherical side surface. (51) is fitted in the pressure plate rotating part (56).
Granule closed type universal joint (46) (46) …… is a connecting plate (57)
(57) ... are connected to each other by a connecting plate (5
7) is provided with a lifting stopper (58) consisting of two bolts attached to the support ring (16) and a holding plate.

The ring spring-inserted expansion / contraction body (48) has a cylindrical body (61) having a ring spring support (59) at the upper end and a bottom (60) at the lower end, and a cylindrical body () passing through the ring spring support (59). 61) The steel rod (47) inserted deeply into it, the ring spring retainer (62) connected to the lower end of the steel rod (47), the ring spring retainer (62) and the ring spring retainer (59). It is formed by the inserted ring spring (63) and the steel rod (47) connected to the bottom portion (60). Ring spring (63)
Is the inner ring (64) (64) with a conical surface, and the outer ring (6)
5) (65) ……, which are stacked alternately with their conical faces in contact, and are inserted together with the lubricant. The upper end of the upper steel rod (47) is connected to the support base (6) with a granular sealed universal joint (4
6), the lower end of the lower steel rod (47) is a suspension ring (8)
Are respectively connected to the granular closed type universal joints (46).

The suspension relay ring (8) has conical through holes (66) (66) ...
Upper and lower support rings (67) (67) each having ..., partition plates (68) (68) ... connecting the support rings (67) (67), and bolts (69) (69) ..., and side plates. (70) is formed by (70). On the sliding surface (49) on the lower surface of the upper support ring (67), the upper vertical suspension members (9) (9) with ring springs are attached.
The granular closed type universal joint (46) (46) ... has a lower vertical suspension (10) (10) with a ring spring on the upper sliding surface (49) of the lower support ring (67). …… Granule closed type universal joint (4
6) (46) …… are installed respectively. The granular closed type universal joint (46) is held by the annular holding plate (71) attached to the partition plates (68) (68) so as not to separate from the sliding surface (49). The vertical suspension member (10) with a ring spring at the bottom has a support ring (67) for the suspension member relay ring (8) at the upper end.
In addition, the structure is the same as the upper vertical spring suspension member (9) shown in FIG. 9 except that the lower end is connected to the support ring (43) of the support leg (7).

The vibration control device includes an actuating device and a resonance avoiding device. The actuating device is composed of a horizontal actuating device which is activated by the horizontal motion of the earthquake and a vertical operating device which is actuated by the vertical motion of the earthquake. As shown in FIGS. 3, 6 and 7, the horizontal actuating device includes four vertical connecting members (72) (7
2) ... Shear force conversion consisting of a horizontal moving body (73) supported horizontally by, a vertical moving body (74) provided in contact with the horizontal moving body (73), and its supporting frame (75). It is composed of a device and a vertical laminate device composed of elastic thin plate laminates (76) (76) and their pressure frames (77) (77) and a holding device (78). The upper and lower ends of the vertical connecting member (72) are connected to the horizontal moving body (73) or the foundation (4) by universal joints capable of transmitting tensile force and compressive force. The horizontal moving body (73) is vertically movably connected to a temporary column (33) mounted on the support leg (7), and a concave surface portion (79) formed in a conical dish shape is provided on the lower surface thereof. ing. As shown in FIG. 15, the inner surface of the columnar body (31) and the outer surface of the temporary column (33) are in a state in which concave portions and convex portions are combined, so that the temporary column (33) cannot move up and down. You can, but you cannot rotate in this position. Therefore, the horizontal moving body (73) does not rotate and the vertical connecting members (72) (72) ... Do not twist.
The vertical moving body (74) is a columnar body having a conical convex surface portion (80) formed on the top, and is vertically movably attached to a cylindrical body (81) held vertically by a support frame (75). There is. The support frame (75) is formed radially and is attached to the side surface of the foundation (4).

The holding device (78) is a box-shaped body having guide grooves for pressurizing the left and right end plates, is installed on the foundation (4), and is supported by the upper support frame (75). Pressurized frame (77) (77)
Is mounted in a pressure guide groove of the holding device (78) so as to be vertically movable, and the upper pressure frame (77) is connected to the vertical moving body (74). Elastic thin plate laminate (76) is the 12th
As shown in Fig. A, a number of metal thin plates slightly curved into a cylindrical shell are stacked with the cylinder axis standing vertically.
The left half is arranged with the concave surface facing left and the right half is arranged with the concave surface facing right. The upper elastic thin plate laminate (76) is formed by connecting the upper pressure edge to the upper pressure frame (77) and the lower pressure edge to the lower pressure frame (77). The laminated body (76) is attached by connecting the upper pressing edge to the lower pressing frame (77) and connecting the lower pressing edge to the pressing plate (82) of the holding device (78). At this time, the apex of the convex surface portion (80) of the vertical moving body (74) is at the center of the concave surface portion (79) of the horizontal moving body (73), and
The slip pair formed by 9) and the convex surface (80) are in close contact.

FIG. 10 is an enlarged view of the vertical actuator, in which the left half shows the state before the operation and the right half shows the state after the operation. It should be noted that FIG. A is a cross-sectional view taken along line MM, and FIG.
-L is a vertical cross-sectional view. The vertical actuator is a vertical moving plate (83) (83) connected to the columnar body (31) of the supporting leg (7).
..., the horizontal moving plates (84) (84) provided with one end in contact with the side surface of the vertical moving plate (83), the holding device (84), and the other end of the horizontal moving plate (84) The horizontal laminated body device described above is used. On the side surface of the vertical moving plate (83), a horizontal concave surface portion (86) having a V-shaped cross section with a gentle slope is provided.
Are continuously provided horizontally, and the horizontal moving plate (84)
A horizontal convex portion (87) having a chevron cross section is provided which is in close contact with the horizontal convex portion (86) of the vertical moving plate (83). Holding device (8
5) is installed on the upper part of the horizontal moving plate (73), and the upper part is connected to the temporary column (33) of the support leg (7).
The holding device (85) has a guide portion for vertically moving the vertical moving plates (83) (83), and horizontal moving plates (84) (84).
.. are respectively provided to hold horizontally movable. The horizontal laminate device is composed of a laminate pressing device and an elastic thin plate laminate (88) provided on the horizontal moving plate (73). As shown in Fig. 12b, the elastic thin plate laminate (88) is formed by stacking a number of metal thin plates slightly curved into a cylindrical shell in a horizontal direction with the cylinder axis horizontal, and the left half has a concave surface on the left. The right half is arranged with the concave surface facing to the right. One of the pressurizing ports of the elastic thin plate laminate (88) is a pressurizing plate provided at the other end of the horizontal moving plate (84), and the other pressurizing port is the reaction force bridge groove (89) of the laminate pressing device. Are respectively connected to pressure plates provided in the. At this time, the sliding pair consisting of the horizontal concave surface portion (86) of the vertical moving plate (83) and the horizontal convex surface portion (87) of the horizontal moving plate (84) is in close contact.

The resonance avoidance device is a relay consisting of a refraction plate device (90) (90), a ring-shaped body (91) and a liquid cylinder (92) (92), as shown in FIGS. 3 and 5-7. It is configured by a ring restraint unit, a liquid cylinder operating device including a pressure tank, a storage tank, a pressure pump, and a switching valve, and a vibration control unit that controls the liquid cylinder operating device by a computer. FIG. 11 is an enlarged view of the refraction plate device, and FIGS. 11A, 11B, 11C, 11C, 11C, 11D, 11C, 11D, 11C, 11D, 11C, 11D, 11C, 11D, 11C, 11D, 11C, 11D, 11E, 11C, 11D, 11E, 11D, 11E, 11C, 11D, 11D, 11D, 11D, 11D, 11D, 11D, 11D, 11D, 11D, 11D, and 11D, respectively. e and f are respectively a front view, a O'-O 'vertical sectional view and a N'-N' vertical sectional view in a protruding state. The refraction plate device (90) includes a guide part (93) vertically installed on the inner wall of the support base (6), a forward sliding body (94) (94) mounted on the guide part (93) so as to be vertically movable, and a reverse slide body. The sliding body (95) (95) and the upper and lower plates are joined by a horizontal pin, and the upper end of the sliding body (95) (95) is connected to the reverse sliding body (95) (95) and the lower end thereof is connected to the forward sliding body (94) (94) by a horizontal pin. It comprises a refraction plate (96) adapted to be joined, and a reverse mounting for connecting the forward slide bodies (94) (94) and the reverse slide bodies (95) (95). A tubular buffer rubber (97) is attached to the central connecting portion of the refraction plate (96). Reverse device, forward sliding body (94)
Racks (98) (98) provided on (94) and gears A (99) (99) meshing with the racks, shaft A (100) and bearing fixed to gears A (99) (99), shaft A (100) ), A central gear A (101) fixed to the rack), racks (102) (102) provided on the reverse slide bodies (95) (95), and a gear B (10) meshing with the racks (102) (102).
3) (103), shaft B fixed to gears B (103) and (103)
(104), the bearing, and the central gear B (105) fixed to the shaft B (104) so as to mesh with the central gear A (101). The lower portions of the forward sliding bodies (94) (94) are connected to the connecting rod (106), and the lower portion of the connecting rod (106) is attached so as to be vertically movable along the inner wall of the support base (6). It is connected to the annular body (91). Liquid cylinder (9
2) is a cylinder (10) whose bottom is fixed to the foundation (4).
7), piston (10) so inserted in the cylinder (107)
8), piston rod (10) connected to piston (108)
9) is formed by. The cylinder (107) is closed at its upper end, and an upper chamber (110) and a lower chamber (111) filled with liquid are formed above and below the piston (108). Further, the upper chamber (110) and the lower chamber (111) are provided with respective flow pipes leading to the liquid cylinder operating device. The piston rod (109) is provided vertically so as to penetrate the rod holding portion (112) provided in the pedestal (11), and its upper portion is connected to the annular body (91).

(Operation of the embodiment) When the seismic isolation device does not operate Horizontal vibration: When a horizontal force acts on the upper building (2) due to a small earthquake or wind pressure, the supporting leg (7) moves to the supporting base (6). ) With respect to the horizontal direction. By this action, the temporary column (33) of the support leg (7) tries to move the horizontal moving body (73) of the horizontal actuator horizontally. When receiving this horizontal force, the concave surface portion (79) of the horizontal moving body (73) causes a downward force to act on the convex surface portion (80) of the vertical moving body (74). When downward force is applied to the vertical moving body (74), the pressure frames (77) (77) are elastic thin plate laminates (76) (7).
Apply axial compression force to 6). However, at this time, since the axial compressive force acting on the elastic thin plate laminates (76) (76) is smaller than the buckling load of the elastic thin plate laminates (76), the elastic thin plate laminates (76) (76) are seated on the elastic thin plate laminates (76) (76). Deformation does not occur.

For this reason, the vertical moving body (74) cannot descend, and the concave surface portion (79) of the horizontal moving body (73) and the convex surface portion (80) of the vertical moving body (74) remain engaged with each other, and between them. No horizontal displacement occurs. As a result, horizontal relative displacement of the support leg (7) with respect to the support base (6) is prevented.

With respect to vertical vibration: When a force such as a small earthquake or wind pressure exerts a vertical motion on the upper building (2), the upper building (2) is displaced relative to the foundation (4) in the vertical direction. Try to cause At this time, in the vertical actuator, the vertical movement slope (83) connected to the columnar body (31) of the support leg (7).
Tends to vertically displace relative to the horizontal moving slope (84), and the horizontal concave surface (86) of the vertical moving slope (83) is displaced relative to the horizontal convex surface (87) of the horizontal moving slope (84). Apply horizontal force. By this action, the horizontally moving slope (84) applies an axial compressive force to the pressing edge of the elastic thin plate laminate (88). However, since this axial compressive force is smaller than the buckling load of the elastic thin plate laminate (88), buckling deformation does not occur in the elastic thin plate laminates (88) (88) .... Therefore, the horizontal movement slope (84) does not move horizontally, and the vertical movement slope (83) has a horizontal concave surface (8).
6) and the horizontal convex part (87) of the horizontal moving slope (84) remain engaged, and the vertical relative displacement of the upper structure (2) with respect to the foundation (4) is prevented. As described above, when the horizontal force or the vertical force acting on the seismic isolation device is small, the seismic isolation device does not deform in the horizontal direction or the vertical direction. As a result,
At the time of a small earthquake, the upper building (2) vibrates horizontally and vertically together with the ground, but the acceleration caused by this vibration is small, so the upper building (2), occupants and installed equipment may be damaged. There is no. Further, when the wind pressure is applied, the upper building (2) does not move horizontally or vertically.

When the seismic isolation device is activated: Operation of the seismic isolation device due to horizontal seismic force and long-period horizontal seismic isolation vibration: When a horizontal earthquake acts on the upper building (2) due to a medium or large earthquake, the supporting leg (7) The temporary column (33) of the support leg (7) applies a horizontal force to the horizontal moving body (73) by attempting to horizontally displace relative to the support base (6). When a horizontal force acts on the horizontal moving body (73), a downward force acts on the vertical moving body (74) by the action of the sliding pair, and an axial compressive force acts on the elastic thin plate laminates (76) (76). At this time, the elastic thin plate laminates (76) (76) are subjected to an axial compressive force that exceeds the buckling load, so that one of the upper and lower elastic thin plate laminates (76) undergoes buckling deformation and becomes vertical. The moving body (74) descends by the amount of axial deformation of the elastic thin plate laminate (76). At the same time, a horizontal shift occurs between the concave surface portion (79) of the horizontal moving body (73) and the convex surface portion (80) of the vertical moving body (74), and the horizontal moving body (73) and the support leg (7). ) Is horizontally displaced relative to the support (6). Since the refraction plate devices (90) (90) of the relay ring restraining part are in a flat state as shown in FIG. 3 and do not restrain the horizontal movement of the suspension ring (8), both ends are of a granular type. The vertical suspension members (9) (10) with ring springs connected by the universal joints (46) (46) are inclined while maintaining a substantially straight line state, and relatively displace the supporting legs (7) in the horizontal direction. The pressure frame (77) connected to the upper pressurizing edge of the elastic thin plate laminate (76) descends at the same time when the elastic thin plate laminate (76) is buckled and deformed, but both blade tips press the lower part. When it comes into contact with the frame of the frame (77) or the bottom plate of the holding device (78), it cannot be further lowered. Therefore, the amount of axial deformation of the elastic thin plate laminate (76) does not exceed a certain amount. Therefore, when only one elastic thin plate laminate (76) is buckled and deformed, the support leg (7) is moved to the support base (6).
It is possible to make relative displacement only within a certain range with respect to. When the amplitude of the horizontal ground motion is small, the direction of the relative displacement changes while the relative displacement of the support leg (7) is within its limit. Since the elastic thin plate laminate (76) has a restoring force, when the horizontal moving body (73) in which the support leg (7) starts moving in the opposite direction moves toward the original position, the vertical moving body (74) moves accordingly. ) Is pushed up, the elastic thin plate laminate (76) deformed when the horizontal moving body (73) reaches its original position returns to its original shape. When the horizontal moving body (73) further continues the relative displacement in the horizontal direction, the elastic thin plate laminate (76) is again buckled and deformed, and the vertical moving body (74) descends, and the horizontal moving body (73).
And the support leg (7) is displaced relative to the support base (6) in the horizontal direction opposite to the above. When the amplitude of the horizontal seismic motion is large and the support leg (7) is relatively displaced in the horizontal direction relative to the support base (6), the first elastic thin plate laminate (7
When 6) buckles and the deformation reaches a limited value, the second elastic thin plate laminate (76) continues to buckle. Since the deformation of the second elastic thin plate laminate (76) is also limited by the pressurizing frame (77), the vertical moving body (74) cannot descend further after descending a certain distance. However, horizontal moving body (73)
Since the depth of the concave surface part (79) of the vertical moving body (74) is smaller than the maximum moving distance of the vertical moving body (74), if the horizontal moving body (73) continues relative displacement, the vertical moving body (74) descends at its limit point. Before reaching, the tip of the convex surface portion (80) of the vertical moving body (74) separates from the concave surface portion (79) of the horizontal moving body (73). The deformed elastic thin plate laminate (76) (76) pushes the vertical moving body (74) upward, but a smooth flat surface portion is formed outside the concave surface portion (79) of the horizontal moving body (73). Therefore, the frictional resistance between the horizontal moving body (73) and the vertical moving body (74) is not so large. Therefore, the elastic thin plate laminate (76) (7
With the constant deformation of 6), the support leg (7) can continue the relative deformation until it comes into contact with the support base (6). 13 and 14 show upper and lower elastic thin plate laminates (76).
FIG. 6 is a vertical cross-sectional view showing a deformed state of the seismic isolation device when both (76) are buckled and the tip of the vertical moving body (74) is separated from the concave surface portion (79). When the direction of horizontal relative displacement of the support leg (7) with respect to the support base (6) changes, the horizontal moving body (73) and the support leg (7) move toward their original position. When the horizontal moving body (73) approaches the original position, the tip of the vertical moving body (74) enters the concave surface portion (79) of the horizontal moving body (73) again, and the horizontal moving body (73) reaches the original position. Then, the elastic thin plate laminate (76) (76) pushes up the vertical moving body (74) and returns to the original shape. When the horizontal moving body (73) continues to move further, the elastic thin plate laminates (76) (76) buckle again and the vertical moving body (74) descends. When the horizontal moving body (73) largely moves, the tip of the vertical moving body (74) moves to the horizontal moving body (73).
The seismic isolation device is largely deformed in the horizontal direction, which is the opposite of the above, by detaching from the concave surface part (79). In this state, the upper building (2) is cut off from the horizontal vibration of the ground and starts long-period horizontal seismic isolation vibration with its own natural period. FIG. 12 is a vertical sectional view showing long-period horizontal seismic isolation vibration of the seismic isolation device. When the seismic isolation device enters the long-period horizontal seismic isolation vibration, no matter how severe the horizontal seismic motion is, only the slight horizontal seismic force generated by the long-period horizontal seismic isolation vibration acts on the upper building (2). Object (2), residents and installed equipment will not be damaged.

Avoiding Resonance of Seismic Isolation Device due to Horizontal Seismic Force and Short Period Horizontal Base Isolation Vibration: When the period of horizontal seismic force approaches the oscillation period of long period horizontal isolation vibration of the seismic isolation device, resonance occurs in the seismic isolation device. . The vibration control unit, which started monitoring the vibration by the operation of the seismic isolation device, moved the liquid cylinder operating device when it got a sign of resonance, and moved the liquid cylinder (92) (92).
The pressurized liquid is sent to 1), and at the same time, the liquid is caused to flow out from the upper chamber (110). As a result, the liquid cylinders (92) (92) ...
Then, the piston (108) rises and the piston rod (10
9) pushes up the annular body (91). When the annular body (91) rises, in the refraction plate devices (90) (90) ..., the forward sliding bodies (94) (94) are pushed up by the connecting rods (106), and the reverse sliding bodies (95) (95) become. To descend. The reverse device of the refraction plate device (90) is a rack (98) when the forward sliding body (94) rises.
Rotates the gear A (99) in the forward direction, and the shaft A (100) fixed to the gear A (99) rotates the central gear A (101) in the forward direction. Since the central gear A (101) rotates the central gear B (105) in the reverse direction, the shaft B (104) fixed to the central gear B (105) rotates the gear B (103) in the reverse direction.
When the gear B (103) rotates in the opposite direction, the rack (102) and the reverse sliding body (95) move downward. Forward sliding body (94)
When (94) moves upward and the reverse slide body (95) (95) moves downward, the refraction plate (9) of the refraction plate device (90) (90).
In 6), the bent central connecting portion projects toward the suspension relay ring (8). When the buffer rubber (97) of the refraction plate (96) comes into contact with the suspension relay ring (8), the suspension is displaced relative to the support base (6) together with the support leg (7). The material relay ring (8) is restrained in its horizontal relative displacement. As a result, when the support leg (7) is horizontally displaced relative to the support base (6),
Vertical suspension with ring spring (9) above the suspension ring (8)
(9) …… keeps vertical, and only the vertical suspension with ring spring (10) (10) below the suspension relay ring (8) ... To do. Since the length of the pendulum is about 1/3, the natural period of the seismic isolation device is considerably shorter than the natural period during long-period horizontal seismic isolation vibration. This state is called short-period horizontal seismic isolation vibration of the seismic isolation device. FIG. 14 is a vertical cross-sectional view showing a deformed state of the seismic isolation device during short-period horizontal seismic isolation vibration. At this time, the upper building (2) substantially horizontally vibrates together with the ground, and the resonance of the long-period horizontal seismic isolation vibration disappears. The upper building (2) is subjected to a horizontal seismic force by this horizontal vibration, but the seismic motion does not damage the upper building (2), the occupants, and the installed equipment due to a slow vibration with small acceleration. When resonance is likely to occur in the short-period horizontal seismic isolation vibration, the vibration control unit turns the refraction plate devices (90) (90) to the flat state and suspends the suspension ring (8).
Release the restraint of, and restore the seismic isolation device to the long-period horizontal seismic isolation state again. In this way, the vibration control unit changes the horizontal natural period of the seismic isolation device from a long period to a short period according to the earthquake motion.
Alternatively, the horizontal seismic force acting on the upper structure (2) is reduced while converting from a short cycle to a long cycle to avoid resonance.

Operation of seismic isolation device by vertical seismic force and long-period vertical seismic isolation vibration: When subjected to vertical motion due to a medium or large earthquake, the upper structure (2) will be displaced relative to the foundation (4) in the vertical direction. And At this time, in the vertical actuator, the vertical moving plate (83) connected to the columnar body (31) of the supporting leg (7).
Tends to shift vertically with respect to the horizontal moving plate (84), and the horizontal concave surface portion (86) of the vertical moving plate (83) is displaced from the horizontal convex surface portion (87) of the horizontal moving plate (84). And apply horizontal force. The horizontal moving plate (84) which receives the horizontal force gives an axial compressive force to the elastic thin plate laminate (88). The elastic thin plate laminate (88) is buckled and deformed by the axial compressive force, and the horizontal moving plate (84) moves in the horizontal direction. At the same time, a shift occurs between the horizontal convex surface portion (87) of the horizontal moving plate (84) and the horizontal concave surface portion (86) of the vertical moving plate (83), and the vertical moving plate (83).
(83) and the columnar body (31) move upward or additively. The right half of FIG. 10 shows the state of the vertical actuating device at this time. FIG. 10a is a cross-sectional view taken along line MM, and FIG.
-L is a vertical cross-sectional view. Cylinder with ring spring (12) (12) ...
…, (40) (40) ……, the support base (6) formed by
And the vertical expansion / contraction part of the support leg (7) is in an expandable / contractible state, and the vertical expansion / contraction part of the vertical suspension members (9) (10) with ring springs formed by the ring spring-inserted expansion / contraction body (48) is always When the vertical actuator is actuated, the seismic isolation device enters a long-period vertical seismic isolation vibration state in which all the vertical expansion / contraction parts perform expansion / contraction motions because they are in the expandable / contractible state. At this time, since the flow pipe (25) of the wheel spring fitted cylinder (12) (40) is in an open state, when the vertical load acts on the piston (24) in the wheel spring fitted cylinder (12) (40), the wheel spring (23) expands and contracts,
Along with this, the liquid in the cylinder (20) flows through the flow pipe (25).
Flow through. When the seismic isolation device enters the long-period vertical seismic isolation vibration, the upper building (2) is cut off from the vertical motion of the earthquake and slowly vibrates in its own natural period. Therefore, no matter how severe the vertical motion of the earthquake is, only the vertical seismic force generated by the long-period vertical base isolation vibration acts on the upper building (2), and the vertical seismic force acting on the upper building (2) is large. Is reduced to. The vertical seismic force acting on the upper building (2) due to the long-period vertical seismic isolation vibration is small with a small acceleration, and this seismic force damages the upper building (2), the occupants and the installed equipment. There is no such thing.

Avoiding resonance of base isolation device due to vertical seismic force and short-period vertical base isolation vibration: When the vertical vibration of the earthquake changes and the long-period vertical base isolation vibration of the base isolation device resonates, the vibration control unit The switching valve of the flow pipe (25) is switched, and from the pressure tank the cylinders with ring springs (12) (12) ……, (40) (4
0) Inject pressurized liquid into. Since the switching valve also has a check valve function, the liquid in the wheel spring-loaded cylinders (12) (40) cannot flow back to the pressure tank. Therefore, the cylinder (12) (40) with ring springs has the piston (24)
Is prevented, and the vertically extending portions of the support base (6) and the supporting legs (7) are restrained from extending and contracting. In this state, the seismic isolation device will be equipped with a vertical suspension member with ring springs (9) (9).
(10) (10) …… Enters the short-period vertical base isolation vibration in which only the vertical expansion / contraction part expands / contracts. As a result, the vertical natural period of the seismic isolation device changes from the long period to the short period, and the resonance caused by the long period vertical seismic isolation vibration disappears. When the seismic isolation device enters the short period vertical seismic isolation vibration, the upper building (2)
Receives the vertical seismic force due to this vertical vibration, but the vertical motion of the earthquake at this time is a slow vibration with small acceleration, and the short-period vertical seismic isolation vibration unique to the seismic isolation device is also a minor vibration that is rapidly attenuated. Therefore, the upper structure (2), residents and installed equipment will not be damaged. When resonance is likely to occur in the short-period vertical seismic isolation vibration of the seismic isolation device, the vibration control unit switches the switching valve of the flow pipe (25) to prevent the outflow and inflow of liquid in the ring spring-loaded cylinders (12) (40). to enable. As a result, the vertical expansion / contraction part of the support base (6) and the support leg (7) begins to expand / contract with the vertical expansion / contraction part of the vertical suspension members with ring springs (9) (10), and the seismic isolation device again has a long cycle. Enter vertical seismic isolation vibration. In this way, the vertical natural period of the seismic isolation device is switched from a long period to a short period or from a short period to a long period in accordance with the vertical motion of the earthquake to avoid resonance and to cause the upper structure (2). Reduce the vertical seismic force acting.

In order to make the explanation easier to understand, the action due to the horizontal vibration of the earthquake and the action due to the vertical vibration are separately described as above, but in the case of an actual earthquake, the horizontal vibration and the vertical vibration occur simultaneously. Therefore, the seismic isolation device operates as follows depending on the magnitude of horizontal or vertical seismic motion. (1) Neither the horizontal actuator nor the vertical actuator operates. (2) The horizontal actuator operates but the horizontal actuator does not operate. (3) The horizontal actuator does not operate, but only the vertical actuator operates.
(4) Both the horizontal and vertical actuators operate.
In addition, the activated seismic isolation device performs either long-period seismic isolation vibration or short-period seismic isolation vibration in (2) and (3) according to the vibration period of horizontal and vertical seismic motions, and in (4), .
Long period horizontal base isolation vibration and long period vertical base isolation vibration, b. Long period horizontal base isolation vibration and short period vertical base isolation vibration, c. Short period horizontal base isolation vibration and short period vertical base isolation vibration, d. Short period Horizontal or vertical seismic isolation vibration is performed in any of four combinations a to d of horizontal seismic isolation vibration and short period vertical seismic isolation vibration.

Restoring the seismic isolation device to its original shape With respect to horizontal vibration: When the horizontal seismic motion becomes weaker, the deformation of the seismic isolation device becomes smaller, and the supporting leg (7) is acted upon by the action of gravity.
Approaches the original position. When the support leg (7) returns to the original position, the elastic thin plate laminates (76) (76) push up the vertical moving body (74) to return to the original shape, and the horizontal actuator is in the state before the operation. When the support leg (7) approaches the original position, the restoring force due to gravity weakens, but the restoring force of the elastic thin plate laminates (76) (76) and the horizontal moving body (73) and the vertical moving body (74) are reduced. The support leg (7) is gradually guided to the original position in response to a slight vibration by the action of the sliding pair.

For vertical vibration: Since the ring springs (23) (63) have a large vibration damping capacity, when the vertical seismic motion becomes small, the ring spring-loaded cylinders (12) (40) and ring-spring loaded expandable body (48) The expansion and contraction subside rapidly and the seismic isolation device returns to its original shape. At the same time as the vertical moving plate (83) returns to the original position, the horizontal moving plate (84) is pushed back by the restoring force of the elastic thin plate laminate (88), the sliding pairs are re-engaged, and the elastic thin plate laminate (88) becomes Return to original form. This leaves the vertical actuator in a pre-actuated state. When the seismic isolation device returns to its original shape, the upper building (2) returns to its original position in both horizontal and vertical directions.

Maintenance of seismic isolation device When inspecting the seismic isolation device, the worker enters the seismic isolation device through the inspection port (113) provided on the foundation (4). Also,
Since the expansion / contraction part (30) on the upper part of the support base (6) can be removed from the outside, the granular sealed universal joint (46) at the upper end of the vertical suspension member (9) with a ring spring is used for the seismic isolation device. It can be inspected from outside without going inside. Horizontal actuators, vertical actuators, and relay ring restraints that do not always support vertical loads can be fully disassembled and repaired in this state as well as inspected. However, the support (6) that constantly supports the vertical load, the vertical suspension members with ring springs (9) (10), and the suspension member relay ring (8) are disassembled and repaired unless the vertical load is temporarily changed. It is not possible. In the seismic isolation device of the present invention, the vertical load can be supported by using the temporary column (33) mounted inside the support leg (7). In installing the temporary column (33), first remove the horizontal operating attachments except the horizontal moving body (73), carry out these members from the inspection port (113), and then slide the sliding board (114).
Place it on the upper surface of the foundation (4) that has been loaded. Vertical connecting material (7
2) Before removing (72) ……, lift the horizontal moving body (73) and the temporary column (33) with a lifting device. FIG. 15 shows the state of the seismic isolation device at that time. FIG. 15 (a) is a vertical sectional view, FIG. 15 (b) is an enlarged PP sectional view of the columnar body (31), and FIG. , D are columnar bodies (31)
It is a QQ, RR horizontal sectional view which expanded the part of a temporary column (33). The columnar body (31) is a cylindrical body having an approximately 1/3 upper portion with a uniform wall thickness, and approximately 2/3 of the lower portion is a cylindrical body having four vertical grooves on the inner wall. About half of the upper part of the temporary column (33) is a cylinder having an equal wall thickness, and about half of the bottom part thereof is a cylinder having four vertical thick wall portions on the surface. Since the vertical thick portion of the temporary column (33) is fitted in the vertical groove of the columnar body (31), the temporary column (33) and the horizontal moving body (73) move up and down in the state of FIG. 15a. You can, but you can't rotate. After the removal of the horizontal actuator, the lifting device is loosened, the horizontal moving body (73) and the temporary column (33) are lowered, and the horizontal moving body (73) is placed on the slide board (114). Next, the granular closed type universal joint (46) (4) above the support base (6)
6) Tighten the nuts (52) in sequence and lift up the columnar body (31) slightly.
It should be slightly above the edge at the top of the vertical thick wall part in 3). In this state, the temporary column (33) can be rotated, so only the temporary column (33) is rotated by 45 ° while the horizontal moving body (73) is kept as it is. Then, loosen the nuts (52) of the granular closed type universal joints (46) (46) ... one after another to lower the columnar body (31) to its original position. As a result, the edge of the vertical thick portion of the temporary column (33) is in close contact with the edge of the columnar body (31), and the total vertical load acting on the columnar body (31) is transmitted to the temporary column (33). When the total vertical load is supported by the temporary columns (33), the support base (6), the support legs (7) and the vertical suspension members with ring springs (9) (9) ..., (10) (10)
The axial force no longer acts on the support, so the support base (6)
The protruding part (17) is hung from the upper structure (2), and the exterior material (18) and the telescopic cylinder (15) of the support base (6) are disassembled and removed. After removing the telescopic cylinder (15), etc., install anti-sway diagonal members (115) (115) that connect the upper building (2) and the lower part of the temporary column (33). Fig. 16 shows the state of the seismic isolation device at that time. Fig. 16 (a) is a vertical sectional view, and Fig. 16 (b) is an enlarged P'-P 'of the columnar body (31).
The cross-sectional views, c and d of FIG. 1, show the columnar body (31) and the temporary column (3
3) is an enlarged cross-sectional view of Q'-Q ', R'-R', FIG. 3E is an enlarged S'-S 'of the temporary column (33).
FIG. As a result, the support base (6), the vertical suspension members with ring springs (9), (9), ..., (10), (10) ,, the suspension member relay ring (8), and the support leg (7) telescopic cylinder ( 34) can be disassembled and repaired. Foundation (4) and horizontal moving body (73)
Since the sliding board (114) is installed between and, the horizontal moving body (73) can be horizontally displaced relative to the foundation (4). Therefore, in this state, even if a middle earthquake or a large earthquake occurs and the upper building (2) horizontally displaces relative to the foundation (4), the columnar body (3
Large horizontal shearing force does not act on 1) and the temporary column (33). However, since it cannot return to its original position by itself when it moves horizontally, disassembly work of this seismic isolation device (1) (1) cannot be performed on all seismic isolation devices at the same time. It is necessary to carry out sequentially within the range where the restoring force can be secured. The columnar body (31) and the temporary column (33)
Since the vertical load support mechanism by the does not have the ability to expand and contract in the vertical direction, if a medium earthquake or large earthquake occurs during disassembly work and vertical seismic force acts on the upper building (2), the seismic isolation device during disassembly work A vertical load concentrates and acts on the columnar body (31) and the temporary column (33). In order to prevent this, when disassembling work, install a paddle between the lower edge of the columnar body (31) of another seismic isolation device and the holding device (85) facing this, and install it vertically. Restrain the stretching movement. Therefore, since the seismic isolation function against vertical seismic force does not work during the repair period, repair work must be carried out promptly.

(Effects of the Invention) The seismic isolation device of the present invention is superior to the seismic isolation device of the original invention in the following points.

The seismic isolation device of the original invention has a multiple suspension structure in which one or a plurality of tubular floating bodies are mounted inside a tubular support base. When the number of floating bodies to be mounted is 1, the outer diameter A of the support base is the thickness B of the cylindrical portion of the support base, and the vertical width provided in the space from the width of the space between the support base and the floating body. C excluding the width occupied by the suspension member, D the width occupied by the vertical suspension member provided in the space, E the thickness of the tubular portion of the floating member, and the width of the space between the floating member and the support leg. If the width occupied by the vertical fishing rod provided in the space is F, the width occupied by the vertical fishing rod provided in the space is G, and the radius of the support leg is H,
A = (B + C + D + E + F + G + H) × 2. On the other hand, in the case of the seismic isolation apparatus of the present invention which does not require a floating body, the outer diameter of the tubular compression member is A ', the thickness of the tubular portion of the tubular compression member is B', and the tubular portion is B '. C'is the width of the space between the cylindrical compression member and the columnar compression member excluding the width occupied by the tension members provided in that space, and D'is the width occupied by the tension members provided in that space. The radius of the compression member of H '
Then, A ′ = (B ′ + C ′ + D ′ + H ′) × 2. Where C + F is the maximum horizontal relative displacement amount of the support leg with respect to the support base of the seismic isolation device of the original invention, and the maximum horizontal relative displacement amount of the columnar compression member with respect to the cylindrical compression member of the seismic isolation device of the present invention is C ′, C ′ = C + F, B ′ = B,
If D ′ = D and H ′ = H, the relationship between the outer diameter A ′ of the cylindrical compression member of the seismic isolation device of the present invention and the outer diameter A of the support base of the seismic isolation device of the original invention is A ′ = A− (E + G) × 2,
The seismic isolation device of the present invention has an outer diameter smaller than that of the seismic isolation device of the original invention by twice the thickness of the tubular portion of the floating member plus the width occupied by the vertical suspension member. by this,
As the effective floor area on the floor where the seismic isolation device is installed increases, the feeling of pressure on the residents decreases and the room becomes easier to use.

Looking at the space inside the seismic isolation device, if C ′ = C + F, the space that was divided into C and F in the seismic isolation device of the original invention is space C in the seismic isolation device of the present invention. It will be integrated and widened, making it easier to perform maintenance and inspection inside the seismic isolation device.

In order to make the natural period of the seismic isolation device the same, the seismic isolation device of the present invention must have a higher height than the seismic isolation device of the original invention. Because it is unnecessary. The seismic isolation device of the present invention has a lower production cost than the seismic isolation device of the original invention.

[Brief description of drawings]

FIG. 1 ... BB cross-sectional view showing a part of a building in which the seismic isolation device of the embodiment of the present invention is installed. FIG. 2 ... AA vertical sectional view showing a part of a building in which the seismic isolation device of the embodiment of the present invention is installed. 3, 4, 5, and 6 ... A longitudinal sectional view, a CC cross sectional view, a DD cross sectional view, and an E-- sectional view of a seismic isolation device according to an embodiment of the present invention. E cross-sectional view. FIG. 7: FF vertical sectional view of the lower portion of the seismic isolation apparatus according to the embodiment of the present invention. 8 a, b, c ... Partial horizontal cross-sectional view, the same GG vertical cross-sectional view, and the same H-H vertical cross-sectional view of the support base of the seismic isolation apparatus of the embodiment of the present invention. 9a, b, c, d ... Vertical cross-sectional view, vertical top view, and horizontal cross-sectional view of the vertical suspension member with ring springs and suspension member relay ring of the seismic isolation device according to the embodiment of the present invention. JJ horizontal cross section, same K
-K transverse sectional view. FIG. 10 a, b ... MM horizontal sectional view and vertical LL vertical sectional view of a vertical actuating device of a seismic isolation device according to an embodiment of the present invention. 11 a, b, c, d, e, f ... Front view of the refraction plate device of the seismic isolation device according to the embodiment of the present invention in a flat state, FIG.
O longitudinal sectional view, same N-N vertical sectional view, front view in the same protruding state, same O'-O 'vertical sectional view, and same N'-N' vertical sectional view. FIG. 12 a, b ... A perspective view of an elastic thin plate laminate of the vertical laminate device of the seismic isolation device of the embodiment of the present invention, and a perspective view of the elastic thin plate laminate of the horizontal laminate device. FIG. 13, FIG. 14 ... Longitudinal sectional view showing long-period horizontal seismic isolation vibration of the embodiment of the present invention, and longitudinal sectional view showing the same short-period horizontal seismic isolation vibration. Fig. 15 a, b, c, d ... A longitudinal sectional view showing a state of a seismic isolation device according to an embodiment of the present invention at the time of completion of preparation for lowering a temporary column, an enlarged PP transverse sectional view of the same supporting leg portion, Q-Q cross section, same R-
R cross-sectional view. FIG. 16 a, b, c, d, e ... A longitudinal sectional view showing a state where the support base of the seismic isolation device of the embodiment of the present invention is being disassembled, the support leg or the temporary column is enlarged P′-P ′ cross section Plan view, Q'-Q 'transverse sectional view, R'-R' transverse sectional view, S'-S 'transverse sectional view. (2) …… Upper structure, (4) …… Foundation, (6) …… Supporting base, (7) …… Supporting legs, (8) …… Supplier relay ring,
(9) (10) …… Vertical suspension material with ring spring, (12) (40)…
… Cylinder with wheel springs, (16) (43) (67) …… Support ring,
(17) (35) …… Splashing part, (19) (59) …… Wheel spring receiver, (20) (107) …… Cylinder, (23) (63) …… Wheel spring, (24) ( 108) …… Piston, (31) …… Column, (33) …… Temporary column, (61) …… Cylinder, (62)…
… Wheel spring retainer, (72) …… vertical connecting material, (73) …… horizontal moving body, (74) …… vertical moving body, (75) …… supporting frame,
(76) (88) ... elastic thin plate laminate, (78) (85) ... holding device, (79) ... concave part, (80) ... convex part, (81)
…… Cylindrical body, (83) …… Vertical moving plate, (84) …… Horizontal moving plate, (86) …… Horizontal concave surface part, (87) …… Horizontal convex surface part,
(90) …… Refraction plate device, (91) …… annular body, (92) ……
Liquid cylinder, (93) ...... Guide part, (94) …… Forward sliding body, (95) …… Reverse sliding body, (96) …… Refraction plate, (106)
...... Connected.

Claims (21)

[Claims] 1. A tubular compression member is provided by fixing a forehead to one building between one building and the other building facing each other in a vertical direction with a space therebetween, and the inside of the compression member. The ring-shaped suspension member relay ring and the columnar compression member are housed in a nested shape with proper intervals in the front, rear, left and right, and the columnar compression member is secured to the other building by a cylindrical compression. A suspension member mounting portion is provided at the end of the member facing the other building, and the suspension member mounting portion and the suspension member relay ring are connected by a tension member composed of a plurality of flexible vertical suspension members, and further, a columnar shape. A columnar compression is provided by providing a suspension member mounting portion at one end of the compression member facing the building, and connecting the suspension member mounting portion and the suspension member relay ring by a tension member composed of a plurality of flexible vertical suspension members. In a supporting device having a hanging structure for suspending a member, a compression member Provided on one or more of the tensile members is a vertical stretchable portion that expands vertically when the acting axial force decreases and contracts vertically when the acting axial force increases, and acts on the horizontal seismic force. If the horizontal seismic force acting on the building is large, the horizontal relative displacement between the one building and the columnar compression member facing it is constrained. If the horizontal actuating device that releases the restraint of the horizontal relative displacement with the member, and the vertical seismic force acting is small, restrain the vertical relative displacement of one of the building and the columnar compression member facing it, When the vertical seismic force acting is large, the vertical actuators that release the constraint of the vertical relative displacement between one building and the columnar compression member that faces the one building are installed on one building and on the other side. Columnar A cylindrical connecting member that is connected to the contracting member and that restricts the horizontal relative displacement of the suspension member relay ring with respect to the cylindrical compression member, or releases the constraint, is a tubular member that faces the suspending member relay ring. Is installed on the inner wall of the compression member, and a vibration control device for controlling the restraint and restraint release operation of the relay ring restraint portion is connected to the relay ring restraint portion according to the period of the earthquake motion to be provided on one of the buildings. A two-stage pendulum type horizontal and vertical seismic isolation device. 2. A two-stage pendulum type horizontal vertical seismic isolation apparatus according to claim 1, wherein the columnar compression member has a columnar body in which a temporary column is mounted so as to be vertically movable. 3. The vertical expansion part is formed so that the axial force acting on the vertical expansion part is supported by one or a plurality of ring springs. The two-stage pendulum horizontal and vertical seismic isolation device described. 4. The two-stage structure according to claim 3, wherein the vertically expanding / contracting portion of the compression member comprises a plurality of ring spring-inserted cylinders formed by inserting ring springs inside the liquid cylinder. Pendulum type horizontal and vertical seismic isolation device. 5. A ring-spring-loaded cylinder is inserted into a cylinder whose one end is sealed by a ring-spring holder so that the ring-spring is inserted into the cylinder and the other side of the cylinder is connected to the ring-spring. 5. The two-stage according to claim 4, wherein a piston is provided at the end of the cylinder, the cylinder is filled with the liquid, and the outflow and the inflow of the liquid into the cylinder are controlled by the vibration control device. Pendulum type horizontal and vertical seismic isolation device. 6. The vertical expansion / contraction part of the tension member is formed by a plurality of flexible vertical suspension members with ring springs, as set forth in claim 3 or 2. Step pendulum type horizontal and vertical seismic isolation device. 7. A flexible vertical suspension member with a ring spring is mounted inside a cylindrical body, one end of which is connected to one flexible vertical suspension member, by connecting it to a ring spring retainer provided at the tip. 7. The two-stage pendulum type horizontal vertical according to claim 6, wherein the other flexible vertical fishing rod is inserted deeply and a ring spring receiver is provided in contact with the ring spring at the other end of the cylindrical body. Seismic isolation device. 8. A concave part having a sloping surface symmetrical with respect to a vertical axis on a surface of a horizontal moving body, which is attached to one of the buildings so as to be horizontally movable, facing the one building, the horizontal actuating device comprising: One of the sliding pairs consisting of convex surface parts that are in contact with this is provided, and the other of the sliding pairs is provided at one end of the vertical moving body attached to one building so that it can move vertically, and the other end of the vertical moving body A two-stage pendulum type according to one of claims 2 to 7, in which a building is connected through a vertical stack device and a horizontal moving body is connected to a temporary column. Horizontal and vertical seismic isolation device. 9. One of the sliding pairs is a conical dish-shaped concave portion,
The two-stage pendulum type horizontal vertical seismic isolation device according to claim 8, wherein the other one of the slip pairs is a conical convex surface portion. 10. A two-stage pendulum according to claim 8 or 9, wherein the horizontal moving body is connected to one of the buildings by a plurality of vertical connecting members provided with universal joints at both ends. Horizontal and vertical seismic isolation device. 11. A vertical moving body, which is vertically movably mounted on a cylindrical body vertically installed on one of the buildings by a support frame, and is selected from a range of claims 8 to 10. Two-stage pendulum type horizontal and vertical seismic isolation device described in one item. 12. A vertical type stacking device, wherein a plurality of thin metal plates slightly curved in a cylindrical shell shape are stacked with the cylinder axis being vertical and one or a plurality of pressing faces are formed in the upper and lower edges. The elastic thin plate laminated body according to claim 1 is attached to a laminated body pressing device in which one end is connected to one building and the other end is connected to the other end of a vertical moving body. The two-stage pendulum type horizontal and vertical seismic isolation device described in one item. 13. A vertical actuating device, wherein a vertical moving plate having a horizontal concave surface portion having a V-shaped cross-section having a gentle inclination on a side surface and a horizontal convex surface portion closely contacting with the horizontal concave surface portion of the vertical moving plate at one end. One or more sets of sliding pairs consisting of moving plates are attached to a holding device installed on a horizontal moving body so that the vertical moving plate can move vertically and the horizontal moving plate can move horizontally, and one end of the vertical moving plate can be attached. One of the items selected from claims 8 to 12, which is connected to a columnar body of a columnar compression member, and is also connected to the horizontal laminate device in which the other end of the horizontal moving plate is installed on the horizontal moving body. The two-stage pendulum type horizontal and vertical seismic isolation device described in. 14. An elastic thin plate laminate in which a horizontal laminate device has a large number of thin metal plates slightly curved in a cylindrical shell shape, which are stacked sideways with the cylinder axis horizontal, and pressurizing surfaces are formed on the left and right edges thereof. The two-stage pendulum type horizontal vertical seismic isolation device according to claim 13, wherein the two-stage pendulum type vertical vertical seismic isolation device is attached to a laminated body pressing device installed on a horizontal moving body with one end connected to the other end of the horizontal moving plate. 15. The relay ring restraining portion is connected to a guide portion vertically installed on an inner wall of a cylindrical compression member, and a forward sliding body, and a reverse sliding body connected to the forward sliding body via a reverse device. Is installed so that it can be moved up and down, and the convex refraction part joined by a horizontal pin is installed toward the suspension relay ring, and one of the upper and lower ends of the refraction plate is used as a forward sliding body. , A plurality of refraction plate devices, each of which is formed by joining the other end to a reverse slide member with a horizontal pin, are arranged at appropriate intervals, and the forward slide member of each refraction plate device is installed in one building. A two-stage pendulum type horizontal vertical seismic isolation device according to one of claims 1 to 14, which is connected to the sliding body moving device. 16. A sliding body moving device, wherein a plurality of liquid cylinders operated by a vibration control device are installed in one building, and each of the annular bodies is mounted on an inner wall of a cylindrical compression member so as to be vertically movable. While connecting the moving parts of the liquid cylinder,
The two-stage pendulum type horizontal vertical seismic isolation device according to claim 15, wherein the annular body and each forward sliding body are connected by a connecting rod. 17. A two-stage pendulum according to claim 1, wherein the flexible vertical fishing rod is a vertical fishing rod provided with universal joints at upper and lower connecting portions. Horizontal and vertical seismic isolation device. 18. A flexible vertical suspension member with a ring spring is a vertical suspension member with a ring spring, in which a universal joint is provided at the upper and lower ends of the flexible vertical suspension member. The two-stage pendulum type horizontal and vertical seismic isolation device described in. 19. The method according to any one of claims 1 to 18, wherein the suspension member attaching portion is a protruding portion provided at an end of the compression member and a support ring formed at an edge of the protruding portion. A two-stage pendulum type horizontal and vertical seismic isolation device according to one item to be selected. 20. A two-stage pendulum type horizontal and vertical seismic isolation device according to claim 1, wherein one structure is a foundation and the other structure is an upper structure. . 21. A two-stage structure according to claim 1, wherein the cylindrical compression member is a cylindrical support base and the columnar compression member is a columnar support leg. Pendulum type horizontal and vertical seismic isolation device.