JP2003056202A - Base isolation sliding support - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problems such as reduction of a welding amount, reduction of the number of parts, simplification of assembling, securing of production precision, reduction of a manufacturing cost and miniaturization of a product being common problems in various base isolation sliding support. SOLUTION: In the base isolation sliding support having a pull resistant mechanism consisting of a push plate 14 provided on the side of a lower structure 1 and a pull resistant plate 13 provided on a post material 7 fixed on an upper structure, the pull resistant plate 13 is coupled to the lower end of the post material 7, and a sliding plate or a sliding member 12 assembling the sliding plate is coupled to the lower part of the pull resistant plate 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration suppressing device for a structure which vibrates under a dynamic load such as an earthquake or a typhoon in the fields of civil engineering, construction and machinery, and a seismic isolation slide bearing as a constituent member thereof. Regarding

[0002]

2. Description of the Related Art Since the Great Hanshin-Awaji Earthquake, there have been an increasing number of cases in which structures such as buildings, steel frames and bridge supports have seismically isolated bearing structures.

Although there are various structures for seismic isolation bearings, the common problems of seismic isolation bearings such as slide bearings with a pull-out prevention mechanism and double-sided sliding bearings are to reduce the amount of welding, the number of parts, and the assembly. There are problems such as simplification, ensuring product accuracy, reducing manufacturing cost, and downsizing of products.

Referring to FIG. 12, a conventional slide bearing with a pullout preventing mechanism will be described. The base plate 2 of the slide bearing 3 is installed on the upper surface of the lower structure 1, and both members are fixed by bolts and nuts 5.

A bundle 7 made of steel pipe is fixed to the lower end of the upper structure 6 made of H-shaped steel by a bolt nut 9, and a bundle base plate 8 is welded to the lower end. A baespot 10 is welded to the lower surface of the bundle base plate 8, and a sliding member 11 is accommodated in the baespot 10 to form a sliding member 12. The sliding member 12 is supported by the base plate 2 and slides on the base plate 2 during an earthquake.

[0006] Further, the bundle 7 made of steel pipe is fitted with an opening 4 opened at the center of the disk-shaped pull-out resistance plate 13 and joined by welding w around the lower portion of the bundle 7. There is.

The upper surface of the peripheral edge of the pull-out resistance plate 13 is pressed by the lower surface of the inner peripheral edge of a doughnut-shaped pressing plate 14 having a large diameter hole, and a sliding member 15 is fixed to the lower surface of the inner peripheral part. An outer peripheral wall 16 made of a steel pipe is joined to the upper surface of the base plate 2 by welding w. This outer wall 16
The lower surface of the pressing plate 14 is applied to the upper end surface of the outer peripheral wall 16 and the fixing bolt 17 is screwed into the screw hole formed in the outer peripheral wall 16 from above the upper surface of the outer peripheral wall 16 at a predetermined height position from the base plate 2. The pressing plate 14 is fixed to the.

The above-mentioned conventional slide bearing with the pull-out preventing mechanism has the following problems.

First, the sliding member 12 provided on the baespot 10 is installed at the lower end of the bundle 7 made of steel pipe, and the pull-out resistance plate 13 is welded around the bundle 7. With the fitting structure, the amount of welding between the pullout resistance plate 13 and the bundle material 7 to be welded around the bundle material 7 becomes large, and the pullout resistance plate 13 is likely to tilt during processing and assembly, so that quality can be ensured. difficult.

Secondly, at the lower end of the bundle 7, a base plate 6 for the bundle having a predetermined thickness is provided and a baespot 10 and a sliding member 1 are provided.
Since 2 is installed, the number of parts is increased, the length of the bundle base plate 6 is increased, and the height of the sliding bearing device is increased.

On the other hand, in addition to the slide bearing with the pull-out resistance mechanism, there is a double-sided slide bearing. In this double-sided slide bearing (not shown), an outer peripheral wall that limits the sliding range of the sliding member is provided on upper and lower base plates that sandwich the sliding member from above and below, and a steel pipe is used for this outer peripheral wall. ,
Manufacturing was performed by welding the lower end edge to the upper surface of the lower base plate.

This double-sided sliding bearing (not shown) has the following problems. That is, it is difficult to position the outer peripheral wall made of steel pipe on the upper surface of the lower base plate, and it takes time and effort to weld the outer peripheral wall in this state, and the welding amount may increase, and in these relationships, It was difficult to reduce the manufacturing cost of sliding bearings and to secure quality due to welding distortion.

[0013]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object thereof is to improve the following points (1) to (6) in the various seismic isolation slide bearings. is there.

(1) The amount of welding at the joint of each part is minimized, the number of parts is reduced, and assembly is simplified.
As a result, the economic effect due to the reduction of manufacturing cost is achieved. (2) Weld distortion is removed as much as possible by minimizing welding and joining, and product accuracy is secured. (3) The height of the sliding bearing device is suppressed and a compact device is obtained. (4) By rationalizing the bolt joints on the outer peripheral wall,
From this aspect, we aim to downsize products. (5) By eliminating sharp projections in the overall shape, molding of each component by casting and forging is facilitated. (6) To facilitate the discharge of water and dust accumulated on the inner sliding surface.

An object of the present invention is to provide a seismic isolation sliding bearing that solves the above-mentioned problems.

[0016]

In order to solve the above problems, the present invention is constructed as follows.

According to a first aspect of the present invention, there is provided a seismic isolated slide bearing having a pull-out resistance mechanism including a holding plate provided on a lower structure side and a pull-out resistance plate provided on a bundle member fixed to an upper structure. A pull-out resistance plate is connected to the lower end of the material, and a slide plate or a member incorporating the slide plate is joined to the lower part of the pull-out resistance plate.

A second invention is a pull-out resistance mechanism comprising a holding plate fixed to an outer peripheral wall provided on a lower base plate installed on a base plate and a pull-out resistance plate provided on a bundle fixed to an upper structure. In the seismic isolated slide bearing, the base plate and the pressing plate are applied to the upper and lower surfaces of the outer peripheral wall, and the respective members are integrally bolted by screw holes formed in the outer peripheral wall.

A third aspect of the present invention is a seismic isolation slide bearing in which a double-sided sliding member is interposed between an upper base plate provided in an upper structure and a lower base plate provided in a lower structure, and A rigid plate having an outer peripheral wall that limits the movement of the double-sided sliding member is formed by stacking at least one base plate in a circular shape at the center, and a bolt insertion hole provided at a corner of the rigid plate overlaps with the base plate to form an upper structure. It is characterized by being bolted to a body or a lower structure.

A fourth aspect of the present invention is a seismic isolation slide bearing in which a double-sided sliding member is interposed between an upper base plate provided in an upper structure and a lower base plate provided in a lower structure. A circular recess is provided in the center of at least one of the base plates, and the periphery of the recess is used as an outer peripheral wall that restricts the movement of the double-sided sliding member, and the base plate is formed by a stepped hole formed in a corner of the base plate. Is bolted to the upper structure or the lower structure.

A fifth aspect of the present invention is a seismic isolation sliding bearing in which a double-sided sliding member is interposed between an upper base plate provided in an upper structure and a lower base plate provided in a lower structure, and An annular recess or an annular groove is provided on at least one of the base plates, and a ring-shaped outer peripheral wall is fitted therein.

[0022]

According to the first aspect of the present invention, the pullout resistance plate is joined to the lower end portion of the bundle, and the cushion rubber, the stainless intermediate plate, and the sliding member are arranged below the pullout resistance plate through members such as bay spots. As a result, the following effects are obtained.

The number of parts can be reduced as compared with the case where the pull-out resistance plate is installed in the middle portion of the bundle. Generally, the pull-out resistance plate has a large plate thickness in order to increase the rigidity in the plate bending direction. On the other hand, the bundle material mainly supports the vertical load, and therefore the plate thickness can be thin. Therefore, it is more rational to join the bundle material to the pull-out resistance plate than to join the pull-out resistance plate to the bundle material, and the sliding material is joined to the pull-out resistance plate that reduces the welding amount, The number can be reduced and the height of the device can be reduced. It is economical because the height of the outer peripheral wall, which has a high degree of processing, can be saved. Further, in order to reduce the height, a space can be provided on the lower surface of the pull-out resistance plate and the bay spot can be fitted into this space.

According to the second aspect of the present invention, in order to inspect and replace the sliding portion, the holding plate can be removed by bolting it through the screw holes provided in the outer peripheral wall. Further, conventionally, since the outer peripheral wall is welded to the base plate, distortion due to welding also occurs, correction work is required, the number of working steps is increased, and economical efficiency has been a problem. Since the screw holes are installed in the bolt and the bolts are integrally joined together with the holding plate and the base plate, this has the following effects.

The steps from welding to distortion correction are eliminated, the steps are simplified and labor is saved, and the economy is improved. Welding distortion is eliminated, plate smoothness is maintained, and dimensional accuracy is ensured.

According to the third invention, there are the following effects. The central part of the steel plate is hollowed out to form the outer wall circumference, the internal space is used as the sliding part of the double-sided sliding member, and the bolt holes at the corners are in the same position and shape as the bolt holes of the base plate. Since it is connected to the structure by bolts, this eliminates the need for welding the outer peripheral ring, and gas cutting and simple drilling are all that is required for machining, which is highly economical.

The rigid plate cut out in a circular shape can be divided. Due to this division, if the bolts are removed, the upper and lower structures can be pulled out sideways with the double-sided sliding members still mounted, which facilitates inspection and cleaning.

By providing an interval between the divided rigid plates, an inspection port and a drain port can be easily made.

According to the fourth invention, there are the following operational effects. An upper or lower base plate having an outer peripheral wall is manufactured by using a slab as a material and performing simple mechanical cutting. This eliminates the need for welding the outer peripheral wall, which simplifies the manufacturing process and reduces costs. In addition, it is possible to eliminate the occurrence of welding distortion due to the welding of the outer peripheral wall.

At the corners of the upper and lower base plates, bolt holes having stepped holes are installed. As a result, the bolt top does not protrude from the thick plate, and there is no hindrance when the device operates. Further, the height of the device can be suppressed, and a compact device can be obtained. The shape can be made simple with few protrusions. Therefore, the integral manufacturing by casting or forging becomes easy. Since the horizontal strength of the outer peripheral part is higher than that of the outer peripheral ring made of steel pipe or the like, it is easy to secure the required strength even if an inspection port or drain port is installed.

According to the fifth invention, there are the following operational effects. In some cases, it is necessary to increase the height of the outer peripheral wall, but in that case, when the outer peripheral wall is formed by cutting as in the second aspect of the invention, the amount of cutting is large and the economy is poor. Therefore, the outer peripheral wall (outer peripheral ring) made of steel pipe is used. in this case,
By installing a circular recess or groove in the base plate and fitting the outer peripheral wall, when the double-sided sliding member hits the outer peripheral wall, the horizontal force is transmitted to the base plate at the fitting portion. Therefore, the base plate and the outer peripheral wall can be lightly welded such as spot welding, welding distortion is also small, and the economy is high.

[0032]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows a seismic isolation slide bearing with a pull-out prevention mechanism according to the first embodiment. In FIGS. 1 and 2, the base plate 2 in the sliding bearing 23 is provided on the upper surface of the lower structure 1.
Is installed, and both members are fixed by bolts and nuts 5.

A bundle 7 made of steel pipe is fixed to the lower end of the upper structure 6 made of H-shaped steel by bolts and nuts 9, and the lower end of the bundle 7 is welded with a circumferential fillet w. The upper surface of the central portion of the pull-out resistance plate 13 is welded (this is the first characteristic configuration of the present invention). Pull-out resistance plate 13
If the sliding bearing is loaded upward, presser plate 1
It catches 4 and resists pull-out resistance.

At the center of the lower surface of the pull-out resistance plate 13, the back surface of the baespot 10 having a downward recess is welded (this is the second characteristic construction of the present invention). Cushion rubber 1 from the top
8, the intermediate plate 19, and the sliding member 20 are accommodated, and the sliding member 22 is constituted by these. The sliding member 20 travels slightly below the end surface of the peripheral wall of the beespot 10 so that it can slide on a sliding plate 24 made of a stainless steel plate, a tetrafluoroethylene plate or the like fixed to the upper surface of the base plate 2 during an earthquake. It is provided.

Further, a rubber ring 25 is fitted on the outer periphery of the beespot 10, and the upper and lower parts thereof are sandwiched between the lower surface of the pull-out resistance plate 13 and the upper surface of the sliding plate 24,
It slides on the sliding plate 24 in the event of an earthquake, which cleans the upper surface of the sliding plate 24 and keeps the sliding member 22 smoothly sliding for a long period of time without dust entering the bottom of the bay spot 10. It is designed to be possible.

A recess may be formed on the lower surface of the pull-out resistance plate 13, and the baespot 10 may be fitted in this recess. With such a structure, seismic isolation sliding including the bundle 7 is possible. The height of the bearing can be made smaller (however, not shown).

A sliding plate 27 made of a stainless steel plate, a tetrafluoroethylene plate or the like is fixed to the upper surface of the pull-out resistance plate 13. The upper surface of the peripheral edge of the sliding plate 27 is pressed by the lower surface of the inner peripheral edge of the doughnut-shaped pressing plate 14 having a large diameter hole, and the sliding member 15 is fixed to this pressing surface.
The lower surface of the outer peripheral edge of the pressing plate 14 is fixed to the upper end surface of the outer peripheral wall 28 fixed to the upper surface of the base plate 2 with bolts 29.

The fixing means of the outer peripheral wall 28 to the base plate 2 is different from the conventional fixing means. That is, the outer peripheral wall 28 is provided with a screw hole 31 at a predetermined interval in the circumferential direction and vertically through the thick portion thereof, and the screw hole 31 is pressed from above. The bolt 29 for fixing the plate 14 to the outer peripheral wall 28 is screwed in, and a fixing bolt 30 is screwed in from below through a bolt insertion hole opened in the base plate 2 (this is the third aspect of the present invention). Is a characteristic configuration of).

Since the head of the bolt 30 is located in the recess formed by hollowing the lower surface of the thick portion of the base plate 2, the head of the bolt 30 does not travel from the lower surface of the base plate 2. Further, the arrangement position of the bolts 30 and the arrangement position of the bolt nuts 5 for fixing the lower structure 1 and the base plate 2 are provided with a predetermined gap in the inward / outward direction of the slide bearing 23, so that the bolts collide with each other. There is no defect.

According to the first embodiment, since the pull-out resistance plate 13 is applied to the lower end edge of the bundle 7 by welding, the posture of the pull-out resistance plate 13 at the time of welding is stable, and the bundle 7 is formed as in the conventional case. There is no problem that the pull-out resistance plate 13 is inclined and welded as in the case of welding the outer periphery of the. Further, since the baespot 10 on which the sliding member 22 is installed is directly fixed to the lower surface of the pull-out resistance plate 13, the base plate for the bundle material for welding the baitspot 10 to the lower end of the bundle material 7 is not required unlike the conventional case. Therefore, the number of parts is reduced, and the height of the sliding bearing device can be suppressed accordingly.

Further, according to the first embodiment, since the outer peripheral wall 28 is fixed to the base plate 2 by the bolts 30 and the welding can be eliminated, the skill, the accuracy reduction due to the welding distortion and the welding distortion accompanying the conventional welding can be eliminated. Straightening, working time,
There is an advantage that labor and the like can be eliminated.

According to the first embodiment, the following overall operation can be obtained.

Since the height of the sliding portion can be kept low, the height of the seismic isolation sliding bearing can be kept low, so that the space above the holding plate 14 can be effectively utilized. Since the pull-out resistance plate 13 is welded to the lower end of the bundle 7, the amount of welding can be suppressed to the necessary minimum. Further, if the lower end of the bundle 7 is manufactured with good dimensional accuracy, it becomes the same as a right-angled ruler itself, and the horizontal accuracy of the pull-out resistance plate 13 can be easily ensured.

A screw hole 31 that vertically penetrates the outer peripheral wall 28.
By connecting the base plate 2 and the pressing plate 14 from above and below by bolts, welding can be eliminated as compared with the case where the conventional outer peripheral wall 16 is welded to the base plate 2 and the welding distortion No need for correction.

Next, FIGS. 6 and 7 show a second embodiment of the present invention.
As a double-sided sliding bearing is shown.

This double-sided slide bearing is provided on the upper base plate 35 joined to the concrete upper structure 33 by the anchor bolts 34, and on the basic concrete constituting the lower structure 36 facing the upper base plate 35. A lower base plate 39 placed on the base plate 43 and fixed by a joining bolt 38 via an anchor bolt 37 embedded in the foundation concrete.
And sliding plates 44A and 44B attached to the surfaces of the upper and lower base plates 35 and 39 facing each other, and the upper and lower base plates 35 via the sliding plates 44A and 44B.
It is composed of a cylindrical double-sided sliding member 45 interposed between 39. The upper sliding member 41 is provided in the recess of the upper surface of the sliding member body 48 of the double-sided sliding member 45 via the cushion rubber 40.
And a lower sliding member 42 is provided in the lower recess.

In the second embodiment, when the upper base plate 35 and the lower base plate 39 laterally move relative to each other via the double-sided sliding member 45 in the event of an earthquake, the double-sided sliding member 45 laterally moves between the upper and lower base plates 35, 39. Therefore, an outer peripheral wall that restricts the movement of the double-sided sliding member 45 is provided. Conventionally, the outer peripheral wall has been manufactured by using a steel pipe and welding the lower end edge thereof to the upper surface of the lower base plate. However, welding the outer peripheral wall of the steel pipe increases the amount of welding and requires much time for welding, making it difficult to reduce manufacturing cost and ensure quality due to welding distortion.

Therefore, in the second embodiment, in order to solve the above-mentioned problems in the double-sided slide bearing, the upper base plate 3
5 and the lower base plate 39 are configured as follows.
First, a rigid plate 46 whose central portion is cut out in a circular shape is installed on the lower base plate 39, and is joined to the lower structure 36 together with the lower base plate 39 by the joining bolt 38 by the stepped hole 47 at the corner of the bolt joining portion. It

The rigid plate 46 has a predetermined plate thickness t (shown in FIG. 6).
The rectangular steel plate is hollowed out into a circular shape so that its inner peripheral surface forms the lower outer peripheral wall 28a. The rigid plate 46 may be formed by joining one steel plate or divided steel plates. In the case of FIG. 7, a semicircular cutout 49 is formed so as to face two steel plates (rigid plates 46), respectively, and the joining end face 50 is joined to form a circular lower outer peripheral wall 28a. And the rigid plate 4 assembled in a rectangle
The divided rigid plate 46 is fixed to the lower structure 36 by screwing the joining bolts 38 inserted into the joining bolt portion stepped holes 47 formed at the four corners of 6 into the screw holes 51 of the anchor bolt 37. . (This is the fourth characteristic configuration of the present invention).

The upper base plate 35 has a predetermined plate thickness t.
₁ (shown in FIG. 6), a circular recess 52 is formed on the lower surface of the central portion of the steel plate by utilizing the plate thickness t _{1 of the} member, and the upper outer peripheral wall 28b is integrally formed around the recess 52. Is formed. The upper base plate 35 may be formed by cutting one steel plate, or may be formed by joining a plurality of divided steel plates (this is the fifth characteristic structure of the present invention). A concrete upper structure 33 is placed by temporarily fixing it to a predetermined position of an upper base plate 35 to which an anchor bolt 34 is connected on the back surface.

In the second embodiment, when an earthquake occurs, when the earthquake occurs, the upper base plate 3 is inserted through the double-sided sliding member 45.
5 and the lower base plate 39 move laterally relative to each other,
The double-sided sliding member 45 is also the upper and lower base plates 35, 39.
Move laterally between. At this time, the movement of the double-sided sliding member 45 does not jump out because the upper outer peripheral wall 28b and the lower outer peripheral wall 28a formed on the upper and lower base plates 35, 39 function as stoppers.

In the second embodiment, the joining bolts 38 inserted into the bolt stepped holes 47 at the four corners of the rigid plate 46 divided into two are located outside the outer shape of the upper base plate 35. If necessary, it can be removed from the screw hole 51 of the anchor bolt 37, whereby the rigid plate 46 is temporarily removed while leaving the double-sided sliding member 45 between the upper and lower base plates 35, 39, and the double-sided sliding member 45 is stored. It is possible to inspect and clean the parts to be cleaned.

The combination structure of the lower base plate 39 and the rigid plate 46 shown in the second embodiment may be provided as the upper receiving member so as to face each other in parallel (this combination example is not shown), or conversely a circular shape. The upper base plate 35 integrally formed with the recess 52 may be provided as a lower receiving member so as to face each other in parallel (this combination example is not shown).

FIGS. 8 and 9 show a double-sided slide bearing as a third embodiment of the present invention.

The double-sided slide bearing according to the third embodiment is a modified example of the second embodiment, and the same elements as those of the second embodiment are designated by the same reference numerals and the description thereof will be omitted. Only different configurations will be described. As shown in the drawings, in the third embodiment, the lower outer peripheral wall 2
The rigid plate 46 that constitutes 8a is configured by combining four divided members 46a that are divided into four in a cross shape, and the inspection / drainage port 56 is formed by separating the four divided members 46a. -Double-sided sliding member 45 through the drainage port 56
It is possible to inspect the internal space where is placed, and when water accumulates inside, it can be quickly drained from the inspection / drain port 56.

In the third embodiment, the upper base plate 35 is fixed to the joint plate 55 fixed to the lower flange 54a of the H-shaped steel 54 constituting the upper structure with the bolt nut 57.

10 and 11 show a double-sided slide bearing as a fourth embodiment of the present invention.

The double-sided slide bearing according to the fourth embodiment differs from the first to third embodiments in the configuration of the outer peripheral walls provided on the upper and lower base plates 35, 39. In the fourth embodiment, unlike the integral type outer peripheral wall as in the upper base plate 35 of the first to third embodiments, as the outer peripheral wall (outer peripheral ring),
A steel pipe is used, and an upper outer peripheral wall 28c and a lower outer peripheral wall 28d made of the steel pipe are fitted in annular grooves 58 cut in the upper and lower base plates 10 and 10. Upper and lower outer peripheral wall 2 made of steel pipe
8c and 28d can be fixed to the upper and lower base plates 35 and 39 made of steel plates by simple welding such as spot welding, and the joining plate work is smooth and easy. Other configurations are
This is the same as the second embodiment.

[0060]

According to the seismic isolation sliding bearing according to the present invention,
With simple structural improvement, the following effects can be achieved.

(1) The seismic isolation slide bearing with the pull-out prevention mechanism and the welding amount of each part constituting the seismic isolation slide bearing such as the double-sided slide bearing are minimized, the number of parts is reduced, and the assembling can be simplified. As a result, it is possible to achieve economic effects by reducing manufacturing costs. (2) Weld distortion can be removed as much as possible, and product accuracy can be secured. (3) The height of the device can be suppressed and the device can be downsized. (4) By minimizing the welding and joining, it is possible to achieve the economic effect by reducing the manufacturing cost, and it is possible to secure the product accuracy as the welding distortion is removed. (5) By rationalizing the bolt joints, the product can be downsized also from this aspect. (6) By eliminating sharp protrusions in the overall shape,
It is easy to mold each part by casting and forging. (7) The water and dust accumulated on the inner sliding surface can be easily discharged.

[Brief description of drawings]

FIG. 1 is a front view of a seismic isolation sliding bearing according to a first embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view of the seismic isolation slide bearing shown in FIG.

FIG. 3 is a view taken along the line AA of FIG.

FIG. 4 is a view taken along the line BB of FIG.

FIG. 5 is a detailed view of part (a) of FIG.

FIG. 6 is a vertical cross-sectional view of a seismic isolation sliding bearing according to the second embodiment of the present invention.

FIG. 7 is a view taken along the line CC of FIG.

FIG. 8 is a vertical cross-sectional view of a seismic isolation sliding bearing according to a third embodiment of the present invention.

9 is a view on arrow D-D of FIG. 8. FIG.

FIG. 10 is a vertical sectional view of a seismic isolation sliding bearing according to a fourth embodiment of the present invention.

11 is a view as seen from the arrow EE of FIG.

FIG. 12 (A) is a vertical sectional view of a conventional seismic isolation sliding bearing,
(B) is a detailed view of (B) part of (A).

[Explanation of symbols]

1 Lower structure 2 base plate 3 sliding bearing 4 open holes 5 bolt nut 6 Upper structure 7 bundles 8 Base plate for bundles 9 bolt nut 10 base pots 11 sliding materials 12 Sliding member 13 Pull-out resistance plate 14 Presser plate 15 sliding material 16 Outer wall 17 Fixing bolt 18 cushion rubber 19 Intermediate plate 20 sliding material 22 Sliding member 23 Sliding bearing 25 rubber ring 27 sliding plate 28 Outer wall 28a Lower peripheral wall 28b Upper peripheral wall 28c Upper peripheral wall 28d Lower peripheral wall 29 Volts 30 volts 31 screw holes 33 Upper structure 34 Anchor bolt 35 Upper base plate 36 Lower structure 37 Anchor bolt 38 Joint bolt 39 Lower base plate 40 cushion rubber 41 Upper sliding material 43 Base plate 44A sliding plate 44B sliding plate 45 double-sided sliding plate 46 Rigid plate 47 Bolt connection stepped hole 48 Sliding member body 49 semicircular notch 50 joining end face 51 screw holes 52 circular depression 53 sliding plate 54 H section steel 54a Lower flange 55 Bonding plate 56 Inspection and drainage port 57 bolt nut 58 annular groove 59 rubber ring w welding

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Claims (5)

[Claims] 1. A seismic isolation slide bearing having a pull-out resistance mechanism including a holding plate provided on the lower structure side and a pull-out resistance plate provided on a bundle member fixed to the upper structure, at the lower end of the bundle member. A seismic isolation slide bearing characterized in that a pull-out resistance plate is joined and a slide plate or a member incorporating the slide plate is joined to the lower part of the pull-out resistance plate. 2. A seismic isolation system having a pull-out resistance mechanism including a holding plate fixed to an outer peripheral wall provided on a lower base plate installed on the base plate and a pull-out resistance plate provided on a bundle fixed to the upper structure. In the sliding bearing, apply the base plate and the pressing plate to the upper and lower surfaces of the outer peripheral wall,
A seismic isolation slide bearing characterized in that the respective members are integrally bolted together by screw holes formed in the outer peripheral wall. 3. A seismic isolation slide bearing, wherein a double-sided sliding member is interposed between an upper base plate provided on the upper structure and a lower base plate provided on the lower structure, and at least one of upper and lower base plates is provided. A rigid plate having an outer peripheral wall that limits the movement of the double-sided sliding member by stacking the central part in a circular shape is laid on the base plate, and a bolt insertion hole installed at a corner of the base plate integrally forms an upper structure or a lower part with the base plate. Seismic isolation slide bearing characterized by bolting to a structure. 4. A seismic isolation slide bearing comprising a double-sided sliding member interposed between an upper base plate provided on an upper structure and a lower base plate provided on a lower structure, and at least one of upper and lower base plates. A circular recess is provided in the center of the base plate, and the periphery of the recess serves as an outer peripheral wall that restricts the movement of the double-sided sliding member, and the base plate is superstructured by a stepped hole drilled bolt hole formed in a corner of the base plate. A seismically isolated sliding bearing characterized by being bolted to the body or the lower structure. 5. A seismic isolation sliding bearing, wherein a double-sided sliding member is interposed between an upper base plate provided in the upper structure and a lower base plate provided in the lower structure, and at least one of upper and lower base plates is provided. Seismic isolation slide bearing characterized in that an annular recess or annular groove is installed in the base plate and an outer ring is fitted therein.