JPH09210121A - Supporting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress drawing force loaded on a structure, and horizontal slidably support a supporting device in all directions by interposing an immediate meeting piece between an upper meeting piece fixed along the lower surface side of an upper structure, and a lower meeting piece fixed along the upper surface of a lower structure, and being brought in opposingly contact each meeting piece with each other flatly. SOLUTION: A supporting device 1 is interposed in a base isolation layer C formed between an upper structure A and a lower structure B. An upper meeting piece 2 fixed on the lower surface side of the upper structure A and a lower meeting piece 3 fixed on the upper surface side of the lower structure B are intersected in a X axial direction and a Y axial direction. An intermediate meeting piece 4 is interposed on a intersected part, the upper meeting piece 2 and the lower meeting piece 3 are horizontal slidablhy connected in the X axial direction and the Y axial direction of a flat surface through the intermediate meeting piece 4. Rolling is absorbed and released by right and left deformation of each laminated layer rubber isolator D interposed on an appropriate position of the base isolation layer C, oscillation applied on the upper structure A is reduced, and drawing force of the upper structure A generated by relieving, overturning, and the like is supported each supporting device 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for supporting a structure such as a base-isolated building or a bridge, for example, when a pulling force (vertical deformation) is generated in the structure by an external force such as an earthquake motion or the like. The present invention relates to a support device for supporting a structure that requires safety considerations.

[0002]

2. Description of the Related Art Conventionally, the above-mentioned structures have a structure in which a pull-out force (lifting) is unlikely to occur due to an external force such as an earthquake motion, and it is not necessary to consider the lift-up due to the pull-out force for the structure. In addition, there are very few cases where a member that suppresses lifting is attached to the seismic isolation layer.

[0003]

However, assuming a situation in which a building with a large height-side length ratio (aspect ratio) or a high-rise or large-scale structure is subjected to an earthquake with a large acceleration, an earthquake response analysis is performed. As a result, the pulling force is likely to occur in the laminated rubber isolator (seismic isolation bearing) that supports the structure, and when "lifting" or "falling" occurs in the structure, the laminated rubber isolator that supports the structure If an excessive pulling force is applied to the laminated rubber isolator and a deformation exceeding the allowable deformation rate occurs in the laminated rubber isolator, a large number of bubbles will be generated inside the laminated rubber isolator, which will reduce elasticity and rigidity, or cause breakage or cracks. Therefore, there is a problem that the seismic isolation function of the laminated rubber isolator is impaired.

As a first conventional example for preventing the above-mentioned problems, for example, a floating prevention device 26 (Japanese Patent Publication No. 6-045973) shown in FIG. 12 has been already developed.
The device 26 has a support structure in which a steel-made restraining beam 27 fixed through the beam portion of the upper structure A and a steel-made restraining beam 28 fixed to the lower structure B are crossed in a cross shape. The device protrudes beyond the beam width of the structure A, and the configuration and structure of the entire device becomes large. Further, the restraining beam 27 must be provided so as to penetrate the beam portion of the upper structure A, and the restraining beam 28 must be provided so as to penetrate the beam portion of the lower structure B, which is troublesome to construct. In addition, the upper structure A and the lower structure B
Since a part of each beam 27, 28 is buried in, even if the bearing portion of each beam 27, 28 is damaged or damaged,
It is structurally difficult to replace. Further, since the load is concentrated on the intersection of the restraint beam 27 and the restraint beam 28, the restraint beam 27 or the restraint beam 28 is bent or deformed,
There is a problem that horizontal sliding cannot be performed smoothly.

As a second conventional example, for example, a seismic isolation mechanism device 29 (Japanese Patent Publication No. 4-65193) shown in FIG. 13 has been already developed, but the device 29 is an upper part fixed to an upper structure A. Since the movable member 30 and the lower movable member 31 fixed to the lower structure B are engaged with each other so as to be horizontally slidable in the intersecting direction, they must be supported only at the intersecting portions of the members 30, 31. However, since the mutual bearing areas are small and the load is concentrated and applied to that portion, bending or deformation occurs at the intersecting portions of the members 30 and 31, and smooth horizontal sliding cannot be performed. Further, when supporting a large and heavy structure, it is necessary to make the cross sections of the members 30 and 31 large, but there is a problem that the configuration of the entire device becomes large.

In view of the above problems, the present invention can obtain a size, strength and durability suitable for supporting a structure, and prevent the horizontal sliding of each shoe from being impaired. Further, it is an object of the present invention to provide a supporting device which can suppress a pulling force applied to a structure and can be horizontally slidably supported in all directions.

[0007]

According to the first aspect of the present invention,
An upper shoe having a groove portion which is fixed to the lower surface side of the upper structure and which opens downward and a lower shoe which has a groove portion which is fixed to the upper surface side of the lower structure and opens upward with respect to the X-axis direction and the Y-axis direction. And intersect at a right angle, and an intermediate shoe is provided at the intersection of the groove formed on the upper shoe and the groove formed on the lower shoe, and the contact surface between the upper shoe and the intermediate shoe is flat. Is a bearing device that engages so as to be horizontally slidable in the X axis direction, and is engaged so that the contact surface between the lower shoe and the intermediate shoe is horizontally slidable in the Y axis direction on a plane. Is characterized by.

According to a second aspect of the present invention, in addition to the configuration of the first aspect, the contact surface between the bottom surface of the groove of the upper shoe and the upper surface of the intermediate shoe and the bottom surface of the groove of the lower shoe and the lower surface of the intermediate shoe The bearing device is characterized in that a lubricating material having a low coefficient of friction is interposed on the contact surface with.

According to a third aspect of the present invention, in addition to the structure according to the first or second aspect, the X-shape is formed on the contact surface between the inner edges of the groove of the upper shoe and the upper edges of the intermediate shoe. A concave portion and a convex portion are formed which are engaged with each other so as to be slidable horizontally with respect to the axial direction. The Y-axis direction is formed on the contact surface between the inner edges of the groove of the lower shoe and the lower edges of the intermediate shoe. Is a bearing device in which a concave portion and a convex portion that are horizontally slidably engaged with each other are formed, and a lubricant having a low coefficient of friction is interposed on a contact surface between the concave portion and the convex portion formed in each of the above-mentioned respective gears. It is characterized by

According to a fourth aspect of the present invention, in addition to the structure of the third aspect, the upper structure and the lower structure are provided between the contact surfaces of the concave and convex portions formed in each of the grooves. The laminated rubber isolators interposed between them are separated by an interval that allows vertical deformation of the laminated rubber isolators, and the variable contact distance between the concavities and convexes is set within the allowable deformation range of vertical deformation of the laminated rubber isolators. It is a bearing device provided with a space adjusting means.

According to a fifth aspect of the present invention, in addition to the configuration of the third or fourth aspect, the upper structure and the upper shoe are separated from each other by an interval allowing creep deformation of the laminated rubber isolator. At the same time, the bearing device is characterized in that the laminated rubber isolator is provided with a space holding means for holding the upper structure and the upper shoe in an allowable deformation range in which creep deformation is allowed.

According to a sixth aspect of the present invention, in addition to the structure of the fourth aspect, the interval adjusting means includes a concave portion formed in the upper shoe and / or the lower shoe, and a convex portion formed in the intermediate shoe. And a convex portion formed on the intermediate gear in the direction in which the space between the facing surfaces of the concave portion and the convex portion is expanded and contracted so as to be adjustable in the vertical direction.

[0013]

In the bearing device according to the first aspect of the present invention, since the intermediate shoe is provided between the upper shoe fixed along the lower surface side of the upper structure and the lower shoe fixed along the upper surface side of the lower structure. Since bending and deformation are unlikely to occur at the contact part of each shoe and it is possible to keep parallel at all times, diagonal horizontal sliding that combines the X-axis direction or Y-axis direction and each direction is allowed, and all directions It can be smoothly slid horizontally. Moreover, the bearing area of each shoe is large,
Since the load is distributed over the entire bearing surface, the strength and durability required to support the structure can be obtained.

According to a second aspect of the present invention, there is provided the bearing device according to the first aspect.
In addition to the action described, by interposing a lubricant on the contact surface between the upper shoe and the intermediate shoe and the contact surface between the lower shoe and the intermediate shoe, the friction coefficient generated on the contact surface of each shoe is reduced. Since the sliding resistance generated on the facing surface of each shoe is reduced, horizontal sliding in an oblique direction that is a combination of the X-axis direction or the Y-axis direction and each direction is permitted, and horizontal sliding is possible in all directions. Can be movably supported.

According to a third aspect of the present invention, there is provided the bearing device according to the first aspect.
Alternatively, in addition to the action described in 2, by engaging the concave portion and the convex portion formed in each shoe with each other, the pulling force applied to the upper structure can be suppressed. In order to reduce the sliding resistance generated on the mutual contact surface by interposing a lubricant on the contact surface between the concave and convex portions, the concave and convex portions formed on each gear should be fully engaged. Can be supported horizontally slidable in any direction.

The support device according to claim 4 is the support device according to claim 3 described above.
In addition to the described action, vertical deformation of the laminated rubber isolator provided between the upper structure and the lower structure is allowed by abutting the facing surfaces of the concave portion and the convex portion formed on each shoe. By restricting the allowable deformation range within the allowable range, vertical deformation exceeding the allowable range can be prevented from occurring in the laminated rubber isolator and the seismic isolation function of the laminated rubber isolator can be stably obtained for a long period of time. In addition, by variably adjusting the distance between the facing surfaces of the concave portion and the convex portion formed in each shoe by the gap adjusting means, even if the clearance is changed due to the deformation or creep deformation of the laminated rubber constituting the laminated rubber isolator, It is possible to correct the distance between the facing surfaces of the concave portion and the convex portion within the allowable deformation range in which the vertical deformation of the rubber isolator is allowed.

According to a fifth aspect of the present invention, there is provided the bearing device according to the third aspect.
Alternatively, in addition to the action described in 4, the space between the upper structure and the upper shoe is held by the space holding means at a space in which the creep deformation of the laminated rubber isolator is allowed, so that between the upper structure and the lower structure. Even if creep deformation occurs in the laminated rubber isolator interposed between the upper structure and the upper structure, the vertical load of the upper structure is not applied to the bearing device and the function of the bearing device can be prevented from being impaired.

According to a sixth aspect of the present invention, there is provided the bearing device according to the fourth aspect.
In addition to the action described, by vertically adjusting the engaging position of the convex portion formed on the intermediate shoe, between the contact surface between the concave portion formed on the upper shoe and or the lower shoe, and the convex portion formed on the intermediate shoe Can be variably set to an interval in which the vertical deformation of the laminated rubber isolator is allowed, and the distance between the facing surfaces of the concave portion and the convex portion can be corrected within the allowable deformation range in which the vertical deformation of the laminated rubber isolator is allowed.

[0019]

According to the present invention, the intermediate shoe is provided between the upper shoe fixed along the lower surface side of the upper structure and the lower shoe fixed along the upper surface side of the lower structure. Since the shoes are contacted with each other in a planar manner, the contacted parts of the shoes are not easily bent or deformed, and they can always be kept in parallel, so that horizontal sliding in all directions can be smoothly performed. In addition, since an intermediate shoe is provided at the intersection with the upper and lower shoes fixed along the mounting surface of the upper structure and the lower structure, it can be installed in a narrow installation range such as the bottom surface of the pillar or beam under surface of the upper structure. A device can be provided and can be easily attached and installed. Moreover, the bearing area of each shoe is large,
Since the load is distributed over the entire bearing surface, it is optimal for supporting a large and heavy structure, and the strength and durability required for supporting the structure are obtained.

Moreover, a lubricating material is provided on the contact surface between the upper and middle shoes and the contact surface between the lower and middle shoes to reduce the friction coefficient generated on the contact surface of each shoe. In order to reduce the sliding resistance generated on the facing surface of the shoe, it can be supported horizontally in all directions. Further, by engaging the concave portion and the convex portion formed in each shoe through the lubricant, the pulling-out force applied to the upper structure is suppressed, and the upper structure is prevented from rising or falling. It can be prevented. In addition, since the sliding resistance generated on the contact surface between the concave portion and the convex portion is reduced by the lubricant, it is possible to support the reeds so as to be horizontally slidable in all directions in a state where they are engaged with each other.

Further, when the upper structure is supported by the laminated rubber isolator, the contact surfaces of the concave portion and the convex portion are separated from each other by an interval allowing vertical deformation of the laminated rubber isolator, so that the vertical structure exceeds the allowable range. Deformation can be reliably prevented from occurring in the laminated rubber isolator, the elasticity and rigidity of the laminated rubber isolator do not deteriorate, and breakage and cracks do not occur, and the seismic isolation function of the laminated rubber isolator can be stably obtained for a long period of time. . Even if the laminated rubber isolator creeps and deforms due to the load of the upper structure and the clearance varies, the gap between the contact surfaces of the concave and convex parts is corrected within the allowable deformation range that allows vertical deformation of the laminated rubber isolator. it can. Moreover, even if creep deformation occurs in the laminated rubber that constitutes the laminated rubber isolator, the load between the upper structure and the upper shoe can be maintained even if creep deformation occurs in the laminated rubber that constitutes the laminated rubber isolator. It is possible to prevent the bearing device from being directly loaded and impairing the function of the bearing device.

[0022]

[Examples] The drawings show, as an example of a structure, a first structure provided on a seismic isolation layer of an upper structure composed of a base-isolated building, a bridge girder, etc. and a lower structure composed of a foundation, a pier, etc. 1 and 2, the bearing device 1 of the present invention is provided on a seismic isolation layer C formed between an upper structure A and a lower structure B. The upper shoe 2 fixed to the lower surface side of the structure A and the lower shoe 3 fixed to the upper surface side of the lower structure B are X-shaped.
While crossing in the axial direction and the Y-axis direction, an intermediate shoe 4 is provided at the intersection of the upper shoe 2 and the lower shoe 3, and the upper shoe 2 fixed to the upper structure A side and the lower shoe B side. Lower shoe 3 fixed to
And are connected to each other through an intermediate gear 4 so as to be horizontally slidable in the X-axis direction (axial direction) and the Y-axis direction (axis orthogonal direction) on the plane. In addition, each laminated rubber isolator D formed by laminating, for example, synthetic rubber and a metal plate in layers at appropriate places on the seismic isolation layer C formed between the upper structure A and the lower structure B.
When an external force such as an earthquake motion is generated in the lower structure B, the lateral vibrations of the laminated rubber isolators D ... are absorbed and alleviated by the lateral deformation, and the shaking imparted to the upper structure A is reduced. The withdrawal force of the upper structure A caused by lifting or falling is supported by each supporting device 1.

As shown in FIG. 3 and FIG. 5, the above-mentioned upper shoe 2 has recesses 2a, 2 formed on both edges of the lower shoe 2 on the lower surface side.
a and the convex portions 4a, 4a formed on both edges of the upper surface of the intermediate shoe 4 described later are horizontally slidably engaged with each other in the X-axis direction on the plane, and the upper portion of the intermediate shoe 4 described later. The sliding plate 5 was fixed to the entire length of the lower sliding surface of the upper shoe 2, facing the solid lubricant 6 fixed to the sliding surface, and fixed to the lower right-angled sliding surface or the lower water smoothing surface of each convex portion 4a, 4a. The sliding plates 7 and 7 are fixed to the entire sliding surface or the lower right-angled sliding surface of the recesses 2a and 2a so as to face the solid lubricants 8 and 8.

Further, both edge portions on the lower surface side of the structure fixing plate 13 fixed to the lower surface side of the upper structure A and both edge portions on the upper surface side of the support fixing plate 14 are welded or a plurality of bolts (not shown). )
, And the upper and lower edges of the bearing fixing plate 15 welded to the upper surface of the upper shoe 2 are connected by a large number of bolts 16 ... . Figure 7
As shown in FIG. 5, the female screw holes 14a formed at both edges of the lower surface of the bearing fixing plate 14 are screwed with the male screw portions 17a screwed on the base end side of the bolt receiving seats 17 ... Then, the lower surface side peripheral edge of each female screw hole 14a is welded to the outer peripheral surface of each bolt receiving seat 17 ... Each of the bolt receiving seats 17 ... is screwed into each of the female threaded holes 17b of each of the bolt receiving seats 17 ... Each nut 18 is screwed into each male screw portion 16a protruding to the lower end side of each of the bolts, and each bolt receiving seat 17 and each nut 18 are tightened and fixed so as to be in contact with each other. The bolts 16 are tightened and fixed in a state of protruding by an arbitrary length with respect to the vertical direction.

On the other hand, the tip end side of each bolt 16 is vertically slidably inserted into each through hole 15a formed at both edges of the upper surface of the bearing fixing plate 15, and the tip end side of each bolt 16 is threaded. The nuts 19 and 20 are respectively screwed into the male screw portions 16a ...
, And are fixed in abutment with each other, so that each nut 19 is screwed to a position spaced apart from the both edges of the lower surface of the bearing fixing plate 15 by a predetermined distance a (for example, about 10 mm). It is fixed.

At the normal time when the weight of the upper structure A acts on each of the laminated rubber isolators D ...
Vertical deformation and creep deformation of the laminated rubber isolators D ... between the opposing surfaces of the nuts 18 screwed onto the bolts 16 and the upper side edges of the bearing fixing plate 15 through which the bolts 16 are inserted. The predetermined distance d (for example, 12 m
Spaced and held in m). That is, even if creep deformation occurs in each laminated rubber isolator D ... due to compression, each nut 18 ...
6 do not come into contact with both edge portions on the upper surface side of the bearing fixing plate 15, and the creep deformation of each laminated rubber isolator D is suppressed within an allowable deformation range. Further, the support fixing plate 14 and the respective bolt receiving seats 17 are not welded but the respective bolt receiving seats 17 are rotatably provided, so that the opposing surfaces of the support fixing plate 15 and the respective nuts 18 are opposed. The laminated rubber isolators D ... Can be adjusted and held at a predetermined distance d (for example, 12 mm) that allows creep deformation due to compression.

As shown in FIGS. 4 and 6, the lower shoe 3 described above has recesses 3a, 3 formed at both edges of the upper shoe 3 on the upper surface side.
a and the convex portions 4b, 4b formed on both edges of the lower surface of the intermediate shoe 4 described later are horizontally slidably engaged with each other in the Y-axis direction on the plane, and the lower portion of the intermediate shoe 4 described later. Each solid fixed to the upper surface of the lower shoe 3 with the sliding plate 9 facing the solid lubricant 10 fixed to the sliding surface, and fixed to the upper right sliding surface or the upper water smoothing surface of each convex portion 4b, 4b. The sliding plates 11, 11 are fixed to the entire sliding surface or the upper right sliding surface of the recesses 3a, 3a so as to face the lubricants 12, 12. In addition, the upper surface side edges of the structure fixing plate 21 fixed to the upper surface side of the lower structure B and the lower surface side edges of the lower shoe 3 are fixed by welding or a large number of bolts (not shown). ing.

The above-mentioned intermediate shoe 4 is opposed to the sliding plates 5 and 9 fixed to the lower sliding surface of the upper shoe 2 and the upper sliding surface of the lower shoe 3, and the upper and lower sliding surfaces of the intermediate shoe 4 are solid-lubricated. Material 6,10
And the convex portions 4 formed on both edges of the upper surface of the intermediate shoe 4
Recesses 2 formed by forming a and 4a on both edges of the lower surface of the upper shoe 2
a, 2a, and the convex portions 4b, 4b formed on the lower surface side edge portions of the intermediate shoe 4 are engaged with the concave portions 3a, 3a formed on the upper surface side edge portions of the lower shoe 3. There is. In addition, when the sliding plates 5 and 9 fixed to the upper shoe 2 and the lower shoe 3 and the solid lubricants 6 and 10 fixed to the intermediate shoe 4 are in pressure contact with each other, the intermediate shoe 4 Lower smoothing surfaces of the solid lubricants 8 and 8 fixed to the convex portions 4a and 4a, and lower smoothing surfaces of the sliding plates 7 and 7 fixed to the concave portions 2a and 2a of the upper shoe 2 respectively. Of the solid lubricants 12 and 12 fixed to the convex portions 4b and 4b of the intermediate gear 4 and the lower gear 3 respectively. Recess 3
The surfaces of the sliding plates 11 and 11 fixed to a and 3a facing the upper water smoothing surface are separated by a predetermined distance c (for example, about 2 mm).

That is, the pulling force is generated in the upper structure A by setting the entire clearance consisting of the intervals a, b, and c to an interval (for example, 14 mm) that allows vertical deformation of the laminated rubber isolators D ... At this time, the bearing fixing plate 15 fixed to the upper shoe 2 comes into contact with the nuts 19 screwed to the bolts 16 and the sliding plates 7 and 7 fixed to the recesses 2a and 2a of the upper shoe 2. And the solid lubricants 8 and 8 fixed to the convex portions 4a and 4a of the intermediate shoe 4, respectively, and the sliding plates 11 and 11 fixed to the concave portions 3a and 3a of the lower shoe 3, and the intermediate shoe 4
Solid lubricants 12, 12 fixed to the convex portions 4b, 4b of the
And abut against each other to regulate the laminated rubber isolators D within an allowable deformation range in which vertical deformation is allowed. Further, the nuts 19 screwed into the bolts 16 are pivotally operated to variably adjust the distance a between the bearing fixing plate 15 fixed to the upper shoe 2 and the nuts 19 ... Isolator D ...
Of each interval a, b, within the allowable deformation range where vertical deformation of
The interval of the entire clearance consisting of c can be corrected.

The above-mentioned sliding plates 5, 7, 9, 11 are composed of the sliding plates 5, 7, 9, 11 made of, for example, stainless steel plate, titanium steel plate, etc. Glittering (that is, mirror finish) is applied to the entire sliding surface of 7, 9, 11 to cause the contact between each sliding plate 5, 7, 9, 11 and each solid lubricant 6, 8, 10, 12, The friction coefficient is reduced. On the other hand, the solid lubricants 6, 8, 10, and 12 are made of, for example, solid lubricants 6, 8, 10, and 12 having a low coefficient of friction formed of a material such as fluororesin and silicon resin, and The sliding surfaces of the lubricants 6, 8, 10 and 12 are flatly and smoothly finished with a flat surface.

The illustrated embodiment is configured as described above, and the operation and operation when the upper structure A is supported by the support device 1 will be described below. First, as shown in FIG. 1, when an external force such as an earthquake motion is generated in the lower structure B, lateral vibration of each laminated rubber isolator D ... The withdrawal force of the upper structure A generated by lifting and falling is supported by each supporting device 1.

That is, when a pulling force is applied to the upper structure A, as shown in FIGS.
The sliding plates 7 and 7 fixed to a and 2a and the solid lubricants 8 and 8 fixed to the convex portions 4a and 4a of the intermediate gear 4 are pressed against each other. Moreover, since the sliding plates 11 and 11 fixed to the recesses 3a and 3a of the lower shoe 3 and the solid lubricants 12 and 12 fixed to the protrusions 4b and 4b of the intermediate shoe 4 are pressed against each other, Two
Since the friction coefficient generated on the contact surfaces of 3 and 4 is reduced and the sliding resistance of each trough 2, 3 and 4 is reduced, the horizontal sliding in the diagonal direction, which is a combination of the X-axis direction or the Y-axis direction and each direction. It is allowed to move horizontally and can be slid horizontally in all directions.

At the same time, as shown in FIG. 3 and FIG.
Engaging the respective concave portions 2a, 2a with the respective convex portions 4a, 4a of the intermediate shoe 4, and engaging the respective concave portions 3a, 3a of the lower shoe 3 with the respective convex portions 4b, 4b of the intermediate shoe 4, Since the pull-out force applied to the upper structure A is suppressed, it is possible to positively prevent the upper structure A from rising or falling. Moreover, the sliding plates 7, 7 fixed to the recesses 2a, 2a of the upper shoe 2, and the intermediate shoe 4
Of the sliding gears 11, 11 fixed to the concave portions 3a, 3a of the lower shoe 3, and the convex portions 4b of the intermediate shoe 4 respectively. , 4b, the bearings are supported by the solid lubricants 12, 12.
It is possible to support 3 and 4 so as to be horizontally slidable in all directions while engaging with each other.

When a pulling force is generated in the upper structure A, as shown in FIG. 7, the bearing fixing plate 1 fixed to the upper shoe 2 is fixed.
5 and the nuts 19 screwed to the bolts 16 are brought into contact with each other, the sliding plates 7 and 7 fixed to the concave portions 2a and 2a of the upper shoe 2, and the convex portions 4a and 4a of the intermediate shoe 4 are fixed. The solid lubricants 8, 8 fixed to the abutment are brought into contact with each other, and the recesses 3a, 3a of the lower shoe 3 are contacted with each other.
Each sliding plate 11, 11 fixed to the
Since the solid lubricants 12 and 12 fixed to b and 4b are brought into contact with each other to regulate the allowable deformation range of vertical deformation of each laminated rubber isolator D ... This can be prevented from occurring in the isolator D .... When the clearance is changed by the deformation or creep deformation of each laminated rubber isolator D ...
Each nut 19 screwed to 6 ... is rotated to operate the upper shoe 2
A between the bearing fixing plate 15 fixed to and the nuts 19 ...
By variably adjusting the distances a, b, and c within the allowable deformation range in which vertical deformation of each laminated rubber isolator D ... Is allowed.
The entire clearance consisting of can be corrected.

A predetermined creeping deformation of each laminated rubber isolator D is allowed between the opposing surfaces of the nuts 18 screwed into the bolts 16 and the bearing fixing plate 15 fixed to the upper shoe 2. Since the laminated rubber isolators D ... Are subject to creep deformation due to compression of the upper structure A, the preset spacing d is narrowed and the nuts screwed into the bolts 16 ... 18 ... and each bolt 16
It is possible to prevent the vertical load of the upper structure A from being directly applied to each of the troughs 2, 3 and 4 without coming into contact with both edges of the upper surface side of the bearing fixing plate 15 which has been inserted.

When the upper structure A is not subjected to the pulling force but the upper structure A is subjected to its own weight load, the sliding plate 5 fixed to the contact surface between the upper shoe 2 and the intermediate shoe 4 and the solid lubrication. Material 6
Since the sliding plate 9 fixed to the facing surface between the lower shoe 3 and the intermediate shoe 4 and the solid lubricant 10 are brought into pressure contact with each other, the solid lubricants 6 and 10 cause Sliding resistance is reduced, and it can be supported horizontally in all directions.

As described above, the intermediate shoe 4 is provided between the upper shoe 2 fixed along the lower surface side of the upper structure A and the lower shoe 3 fixed along the upper surface side of the lower structure B. As a result, the contact portions of the respective troughs 2, 3, 4 are unlikely to bend or deform, and can always be kept parallel. Since the solid lubricants 6 and 10 are provided on the upper and lower facing surfaces of the respective gears 2, 3 and 4,
The friction coefficient generated on the contact surface of 4 is small,
Since the sliding resistance is reduced, horizontal sliding in an oblique direction, which is a combination of the X-axis direction or the Y-axis direction and each direction, is allowed, and horizontal sliding in all directions can be performed smoothly.

Further, since the intermediate lumber 4 is provided between the upper lumber 2 and the lower lumber 3 fixed along the mounting surfaces of the upper structure A and the lower structure B, the lower surface of the pillar of the upper structure A and The device can be installed in a narrow installation range such as the lower surface of the beam, and the structures A and B and the troughs 2 and 3 can be easily fixed by fixing means such as bolts, so that they can be easily attached and installed. Moreover, since the bearing area of each of the troughs 2, 3 and 4 is large and the load is distributed over the entire bearing surface, it is ideal for supporting large and heavy structures, and it is necessary to support the structures. It has excellent strength and durability.

Moreover, the recesses 2a, 2a of the upper shoe 2 and the projections 4a, 4a of the intermediate shoe 4 are engaged with each other through the solid lubricants 8, 8 so that the recesses 3a, 3a of the lower shoe 3 are engaged. And the convex portions 4b, 4b of the intermediate gear 4 are engaged with each other through the solid lubricants 12, 12, the pulling force applied to the upper structure A is suppressed, and the upper structure is prevented from rising or falling. It can be prevented from occurring in the body A and the sliding resistance generated in the engaging portions of the respective gears 2, 3 and 4 is reduced by the solid lubricants 8 and 12, so that the respective gears 2, 3 and 4 are engaged with each other. Can be supported horizontally slidable in all directions.

Further, each concave portion 2a, 3a and each convex portion 4a,
4b and the contact surface are separated from each other by an interval in which the vertical deformation of the laminated rubber isolator D is allowed, and it is possible to reliably prevent the vertical deformation of the laminated rubber isolator D from exceeding the allowable range. Elasticity and rigidity do not decrease, and breakage and cracks do not occur, and the seismic isolation function of the laminated rubber isolator D can be stably obtained for a long period of time. In addition, the upper structure A and the upper shoe 2 are separated from each other by an interval that allows the creep deformation of the laminated rubber isolator D to be allowed, so that the load of the upper structure A is not applied to the bearing device 1 and the bearing device 1 It is possible to prevent the function of is impaired.

In addition, since the bearing fixing plates 14 and 15 constituting the bearing device 1 are connected by the bolts 16 ..., the nuts 19 and 20 screwed into the bolts 16 ... 18 are rotated in the loosening direction to fix each bolt receiving seat 17 fixed to the bearing fixing plate 14 and each insertion hole 15a of the bearing fixing plate 15 to each bolt 16
The bearing fixing plates 14 and 15 can be easily separated into the upper and lower parts by simply removing the ... That is, since the upper structure A such as a seismic isolated building or bridge girder is supported by the laminated rubber isolators D ...
The load of the upper structure A does not act on the
Since it can be extracted in the axial direction and the Y-axis direction, the extraction work of each of the troughs 3, 4, 5 can be easily performed. In addition, the trouble and work of jacking up the upper structure A such as a seismic isolated building or bridge girder by a lifting means such as a hydraulic jack can be omitted, and maintenance and replacement work of the bearing device 1 can be easily performed.

8, FIG. 9, FIG. 10, and FIG. 11, the clearances between the concave portions 2a, 2a formed on the upper shoe 2 and the convex portions 4a, 4a formed on the intermediate shoe 4 are variably adjusted at arbitrary intervals. The support apparatus 1 of 2nd Example is shown, The structure fixing plate 13 and the upper shoe 2 which were fixed to the lower surface side of the upper structure A are welded, or are fixed with many each bolt (illustration omitted), and a lower structure. The structure fixing plate 21 fixed to the upper surface side of B and the bearing fixing plate 22 welded to the lower surface side of the lower shoe 3 are fixed by bolts 23 and nuts 24, and are formed on the lower surface side of the upper shoe 2. Each recess 2
A locking plate 4c fixed to the upper end of the intermediate shoe 4 between a and 2a
Is inserted to engage the concave portions 2a, 2a formed on the upper shoe 2 with the convex portions 4a, 4a formed on both side edges of the locking plate 4c. Moreover, the male screw portion 4d screwed on the outer peripheral surface of the upper end side of the intermediate shoe 4 and the female screw hole 4e screwed on the central portion of the lower surface side of the locking plate 4c are screwed together to form the male thread formed on the intermediate shoe 4 On one side peripheral surface of the screw portion 4d, a detent pin 25 screwed to one edge of the locking plate 4c is abutted in the radial direction to mutually immobilize and prevent the detent. In addition, the facing surfaces of the lower sliding surface of the upper shoe 2 and the upper sliding surface of the intermediate shoe 4 are separated by a predetermined distance allowing creep deformation due to compression of the laminated rubber isolators D.

That is, the recesses 2a, 2 formed in the upper shoe 2
When variably adjusting the clearance between a and the convex portions 4a, 4a formed on the intermediate shoe 4, the bolts 23 and the nuts 24 are removed and the detent pin 25 is rotated in the loosening direction. The lower shoe 3 and the intermediate shoe 4 are rotated while the recesses 2a, 2a formed on the upper shoe 2 and the protrusions 4a, 4a formed on the locking plate 4c are engaged, or The lever 3 is pulled out and only the intermediate lever 4 is horizontally rotated, and the locking plate 4c is screw-fed in the screwing direction along the male screw portion 4d threaded on the upper end side of the intermediate lever 4. Recesses 2a, 2 formed on the upper shoe 2
a, the lower sliding surface and the convex portions 4a formed on the locking plate 4c,
After variably adjusting the distance b from the lower sliding surface of 4a, the detent pin 25 is rotated in the tightening direction, and the locking plate 4c screwed onto the upper end of the intermediate gear 4 is unrotatably rotated. By fixing and fixing, the laminated rubber isolators D, like the first embodiment.
Each interval b, c within the allowable deformation range where vertical deformation of
You can adjust the interval of the entire clearance consisting of.

In the second embodiment described above, the lower shoe 3 and the intermediate shoe 4 are rotated and the locking plate 4c screwed to the upper end side of the intermediate shoe 4 is screw-fed. An adjusting mechanism may be provided on the lower end side of the intermediate shoe 4, and the engaging plate 4c screwed to the lower end side of the intermediate shoe 4 by rotating the upper shoe 2 and the intermediate shoe 4
As described above, the distance c between the upper sliding surfaces of the concave portions 3a, 3a formed on the lower shoe 3 and the upper sliding surfaces of the convex portions 4b, 4b formed on the intermediate shoe 4 can be varied in the same manner as described above. Can be adjusted. Moreover, the locking plates 4c, 4c are provided on the upper and lower ends of the intermediate shoe 4, respectively.
May be provided so as to be capable of screw feeding, or the intermediate portion of the intermediate gear 4 may be provided so as to be adjustable in expansion and contraction in the vertical direction.

In the correspondence between the structure of the present invention and the above-mentioned embodiment, the lubricant of the present invention corresponds to each of the solid lubricants 6, 8, 10, 12 of the embodiment, and the same shall apply hereinafter to the upper shoe 2 Groove portions of the lower shoe 3 correspond to the facing surfaces of the recesses 2a, 2a formed in the upper shoe 2, and the groove portions of the lower shoe 3 have the recesses 3 formed in the lower shoe 3.
Corresponding to the opposing surfaces of a and 3a, the spacing adjusting means is a locking plate 4c that constitutes the intermediate shoe 4, support bearing fixing plates 14 and 15,
Bolt 16, bolt receiving seat 17, nut 18, 1
9 and 20 and the detent pin 25, and the distance maintaining means corresponds to the bearing fixing plates 14 and 15, the bolt 16, the bolt receiving seat 17, and the nuts 18, 19 and 20.
It is not limited to the configuration of the above-described embodiment.

In the first and second embodiments described above,
Although the solid lubricants 6, 8, 8 and the solid lubricants 10, 12, 12 are fixed to the intermediate shoe 4 side, for example, the solid lubricants 6, 8, 8 are fixed to the upper shoe 2 side. The solid lubricants 10, 12, 12 may be fixed to the lower shoe 3 side, and the sliding plates 5, 7, 7 and the sliding plates 9, 11, 11 may be fixed to the intermediate shoe 4 side. Since the coefficient of friction generated on the contact surfaces of Nos. 3, 3 and 4 is small, the same effect as that of the above-described embodiment can be obtained.

Further, in the embodiment, by forming the convex portions 4a, 4a and the convex portions 4b, 4b of the intermediate groove 4 into the rounded shapes having the proper radius of curvature, the respective concave portions are formed. Even if there is a deviation in the X-axis direction and the Y-axis direction of 2, 3 and 4,
Corresponding to the deviation, the respective gears 2, 3, 4 are slightly displaced in the X-axis direction and the Y-axis direction, so that the respective gears 2, 3, 4 can be smoothly slid horizontally.

Further, in the embodiment, the recesses 2a, 2a formed in the upper shoe 2 and the projections 4a, 4a of the intermediate shoe 4 are engaged with each other, and the recesses 3a, 3a of the lower shoe 3 and the intermediate portions are engaged. The convex portions 4b, 4b of the shoe 4 are engaged with each other. For example, the convex portions formed on the lower surface side edge portions of the upper shoe 2 and the concave portions formed on the upper surface side edge portions of the intermediate shoe 4 May be engaged with each other to engage the respective convex portions formed on both upper surface side edge portions of the lower shoe 3 and the respective concave portions formed on the lower surface side edge portions of the intermediate shoe 4 in the first and second embodiments. The configuration is not limited to the example configuration.

[Brief description of drawings]

FIG. 1 is a side view showing an installed state of each shoe constituting the support device of the first embodiment.

FIG. 2 is a plan view showing an installed state of an upper shoe and a lower shoe.

FIG. 3 is a sectional view taken along the line AA showing the structure of the support device.

FIG. 4 is a cross-sectional view taken along the line BB showing the structure of the support device.

FIG. 5 is an enlarged view showing engaging portions of an upper shoe and an intermediate shoe.

FIG. 6 is an enlarged view showing engaging portions of a lower shoe and an intermediate shoe.

FIG. 7 is an enlarged view showing a connecting portion between the bearing fixing plate and the upper shoe.

FIG. 8 is a plan view showing an installed state of upper and lower shoes constituting the support device of the second embodiment.

FIG. 9 is a cross-sectional view taken along the line EE showing the structure of the support device.

FIG. 10 is a cross-sectional view taken along the line F-F showing the structure of the support device.

FIG. 11 is an enlarged view showing the engaging portions of the upper shoe and the intermediate shoe.

FIG. 12 is a cross-sectional view showing a floating prevention device of a first conventional example.

FIG. 13 is a cross-sectional view showing a seismic isolation mechanism device of a second conventional example.

[Explanation of symbols]

 A ... Upper structure B ... Lower structure D ... Laminated rubber isolator 1 ... Bearing device 2 ... Upper gear 2a ... Recess 3 ... Lower recess 3a ... Recess 4 ... Intermediate recess 4a, 4b ... Convex part 4c ... Locking plate 5, 7, 9, 11 ... Sliding plate 6, 8, 10, 12 ... Solid lubricant 14, 15 ... Bearing fixing plate 16 ... Bolt 17 ... Bolt receiving seat 18, 19, 20 ... Nut 25 ... Lock pin

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display area F16F 15/04 8312-3J F16F 15/04 E

Claims (6)

[Claims] 1. A support device, which is interposed between an upper structure and a lower structure and supports the upper structure in a state in which horizontal displacement of the upper structure is allowed, and is fixed to a lower surface side of the upper structure. The upper shoe having a groove portion that is opened downward and the lower shoe having a groove portion that is fixed to the upper surface side of the lower structure and is opened upward intersect with each other in a state orthogonal to the X-axis direction and the Y-axis direction. An intermediate shoe is provided at the intersection of the groove formed on the upper shoe and the groove formed on the lower shoe, and the contact surface between the upper shoe and the intermediate shoe is horizontally slid in the X-axis direction on the plane. Movably engaged with each other, and the contact surface between the lower shoe and the intermediate shoe is set on a plane Y
A bearing device that is engaged so as to be horizontally slidable in the axial direction. 2. A lubricant having a low coefficient of friction is provided on the contact surface between the bottom surface of the groove of the upper shoe and the upper surface of the intermediate shoe, and the contact surface between the bottom of the groove of the lower shoe and the lower surface of the intermediate shoe. The bearing device according to item 1. 3. A concave portion and a convex portion which are engaged with each other so as to be horizontally slidable in the X-axis direction are provided on the facing surfaces of the inner edge portions of the groove of the upper shoe and the upper edge portions of the intermediate shoe. And a concave portion and a convex portion that engage horizontally slidably in the Y-axis direction are formed on the contact surfaces of the inner edges of the groove of the lower shoe and the lower edges of the intermediate shoe. The bearing device according to claim 1 or 2, wherein a lubricating material having a low coefficient of friction is provided on the contact surface between the concave portion and the convex portion formed in each of the gears. 4. The laminated rubber isolator provided between the upper structure and the lower structure is provided between the contact surfaces of the recesses and the protrusions formed in each of the gears so as to allow vertical deformation. 4. The bearing device according to claim 3, further comprising space adjusting means for variably setting the distance between the contact surfaces of the concave portion and the convex portion within a permissible deformation range in which the vertical deformation of the laminated rubber isolator is allowed while being separated from each other. 5. The upper structure and the upper shoe are separated from each other by an interval allowing creep deformation of the laminated rubber isolator and within an allowable deformation range allowing creep deformation of the laminated rubber isolator. The bearing device according to claim 3 or 4, further comprising a space holding means for holding between the upper structure and the upper shoe. 6. The gap adjusting means engages a concave portion formed in the upper shoe and / or the lower shoe with a convex portion formed in the intermediate shoe, and between the contact surfaces of the concave portion and the convex portion. 5. The bearing device according to claim 4, wherein a convex portion formed on the intermediate gear is provided so as to be adjustable in the vertical direction in the direction of expansion and contraction.