JP3018288B2 - Sliding elastic bearing device for structures - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sliding elastic bearing device for various structures such as bridges and buildings.

[0002]

2. Description of the Related Art Various structures such as bridges and buildings are supported by rubber bearings (reaction-bearing bearings, seismic isolation bearings, etc.). Since such functions are also required, the planar dimensions and rubber thickness of the bearing device are increased, and the conventional rubber bearing has caused problems in design, manufacturing, durability, workability, and economy. Also, in terms of the overall structure, problems such as an increase in vibration and acceleration of fatigue of the steel bridge have been pointed out. Conventionally, as an elastic bearing device using an elastic bearing body such as rubber, one of an upper side and a lower side (for example, an upper side) of an elastic bearing device is attached to an upper structure, and the other (for example, an elastic bearing device). To the lower structure,
There is known an elastic bearing device which is expected to have the following effects (1) to (3). (1) The function of elastically supporting the load of the upper structure by an elastic body such as rubber, and the function of transmitting the load while buffering the lower structure (hereinafter simply referred to as load support function). (2) An operation of supporting the structure while allowing the elastic support to rotate against the deflection of the upper structure (that is, the rotation of the upper structure when viewed from the side of the support serving as a fulcrum) (hereinafter simply referred to as a rotation support operation). . (3) An operation of supporting while allowing relative displacement in the horizontal direction of the upper structure and the lower structure by horizontal shear deformation of the rubber (hereinafter simply referred to as a shear bearing operation). In particular, there have been known many technical ideas of supporting the upper structure and the lower structure while they are relatively displaced in the horizontal direction while buffering them by the shear deformation of an elastic body such as rubber. However, in the case of the conventional bearing device, even if the elastic body is subjected to shear deformation while supporting the upper structure, the above-mentioned (1)
It is necessary to satisfy the effects of (2) and (2), and it is necessary to design in consideration of all the loads (1) to (3) acting on the elastic body. In addition to the problem that the size becomes large, there is a problem that a relatively high bearing stress cannot be applied to the relatively elastic body. In addition, it is necessary to sufficiently reflect the fatigue of the elastic layer in the design because the structure is such that the elastic body such as rubber is subjected to repeated shear deformation in response to the expansion and contraction of a girder or the lateral displacement during an earthquake. It is also known to temporarily slide the elastic bearing when pre-shearing deformation or post-shearing deformation is performed, but in any case, after the installation, the large shear deformation of the elastic body is basically required. Is always allowed, so that the structure type is basically different from the case where the shear deformation is not always allowed in the case of the present invention. Further, when the elastic bearing member is subjected to preliminary shearing deformation or post-shearing deformation, there is a problem that the installation work becomes complicated, the device becomes complicated, and a high level of skill is required.

[0003] In the case of a steel bearing device, a hemispherical bearing surface is provided on the upper portion in order to provide the rotary bearing function of (2) among the bearing functions (1) to (3). It is necessary to adopt a structure in which a steel lower support member and an upper support member having a hemispherical convex portion at the lower portion and an upper structure support portion at the upper portion are fitted to each other, and there is a problem that the structure is complicated. The present invention relates to the above-mentioned (1)
The function (3) of the bearing functions (3), that is, the upper structure or the lower structure, which is always made to be inoperative by the shear deformation bearing function and is always supported by the elastic bearing device, is formed during and during these constructions. An object of the present invention is to provide an elastic bearing device that can be slid at all times even after construction and can be relatively permanently supported.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a slide type elastic bearing device for a structure which has been developed to improve the above-mentioned problems.

[0005]

In order to achieve the above-mentioned object, according to the present invention, there is provided a sliding elastic bearing device for a structure according to the present invention, wherein the structure is disposed between an upper structure and a lower structure. In the object elastic bearing device, the lower steel plate in the elastic bearing body integrally including the upper steel plate and the lower steel plate via the elastic layer is locked to the upper surface of the lower support member fixed to the lower structure so as not to be laterally movable. , Fixed to the substructure
A shear constraint wall is provided vertically on the upper surface of the lower support member.
Before being placed inside it by the shear restraint wall
The relative width of the lower and upper steel plates in the elastic bearing
By restraining the movement, the relative lateral distance between the lower steel plate and the upper steel plate
Shear deformation of elastic layer due to directional displacement does not always work
Between the elastic layer and the shear constraint wall
The annular gap is provided, and wherein the other of the upper steel plate to the lower support member side is locked immovably relative movably and laterally in the vertical direction relative to the lower support member, further
On the inner surface of the shear restraint wall and the upper part of the upper steel plate.
The outer peripheral surface of the upper support member locked by the stopper
Movable shear surface, and the upper surface level of the shear restraint wall.
Is set to be located in the middle of the upper support member,
The upper structure is always slidably supported in a lateral direction via a slide bearing having a sliding surface provided on the upper steel plate.

According to a second aspect of the present invention, there is provided a sliding type elastic bearing device for a structure , wherein a rubber layer is provided on the inside of a shear restraint wall rising from a base plate installed on a lower structure.
Upper and lower fitting support members at lower and upper portions
A high-bearing load supporting member provided with
The bundle wall restrains the lateral movement and shear deformation of the high bearing load supporting member placed on the base plate, and supports the upper fitting.
The relative lateral movement of the member and the lower
Is restrained so that the shear deformation of the
The top level of the serial high-Bearing load is mounted on top of the elastic layer of the support member upper fitted and the supporting member, wherein protrudes than the top portion of the shear restraint wall, and against the inner circumferential surface of the shear restraint wall
The upper fitting support member is provided slidably up and down,
Upper fitting support member and lower fitting mounted on upper and lower portions of elastic layer
The support member is placed in the lateral direction due to the high bearing stress of the elastic layer.
An annular reaction wall that restrains shearing force
The internal stress of the elastic layer is widely distributed and excessive local strain
At least one or more reinforced steel sheets, etc.
Embedded in the elastic layer, and the outer periphery of the elastic layer
An annular recess is formed on the surface to reduce stress concentration,
The sole plate attached to the upper structure is slidably supported on the upper surface of the upper fitting support member.

According to a third aspect of the present invention, there is provided a sliding type elastic bearing device for a structure, wherein the upper steel plate is interposed between the upper structure and the lower structure. And the lower steel plate in the elastic bearing body integrally having the lower steel plate and the lower steel plate fixed to the lower structure, and on the inner side of the shear constraint wall attached to the lower steel plate.
So that the part approaches or contacts the outer surface of the upper steel plate
Arranged on the elastic bearing by the shear restraint wall.
The relative lateral movement of the lower and upper steel plates
Due to the relative lateral displacement of the lower and upper steel plates.
It is constrained that the shear deformation of the elastic layer does not always work,
An annular gap is provided between the elastic layer and the shear restraint wall.
And the other upper steel plate is locked so as to be movable up and down relative to the lower steel plate and immovable in the lateral direction, and the outer peripheral surface of the inner wall surface of the shear restraint wall and the outer steel plate are further fixed.
The sliding surface with the peripheral surface is a slip surface, and the
Set the top level so that it is located in the middle of the upper steel plate.
The upper structure is always slidably supported in a lateral direction via a slide bearing having a sliding surface provided on the upper steel plate.

According to a fourth aspect of the present invention, there is provided a slide type elastic bearing device for a structure, wherein the upper steel plate is disposed between the upper structure and the lower structure through an elastic layer. and the lower steel plate in the elastic support member having a lower steel plate integrally is fixed to the lower structure, and shear restraint walls are columnar members provided at the central portion of the lower steel sheet, in the elastic support member on the outer side Elastic layer
There is disposed, the upper steel plate movably and is locked immovably engaged laterally relative vertical direction relative to the columnar member is inlaid on the columnar member, lower in the elastic member
The relative lateral movement of the upper and lower steel plates is restrained and the elastic layer
Restrained so that the shear deformation does not always function, and
An annular gap is provided between the elastic layer and the shear restraint wall,
Furthermore, the inner peripheral surface of the upper steel plate is formed on the outer peripheral surface of the shear restraint wall.
The upper surface of the shear constraining wall, which is placed in contact with or in close proximity
The level is set to be located in the middle of the upper steel plate,
The upper structure is always slidably supported in a lateral direction via a slide bearing having a sliding surface provided on the upper steel plate. According to a fifth aspect of the present invention, in the slide type elastic bearing device for a structure according to the third aspect of the present invention, the other upper portion is formed by a shear restraint wall formed of a cylindrical bearing body fitted and fixed to a lower steel plate. It is characterized in that a steel plate is locked so as to be able to move vertically and relatively immovably in the lateral direction relative to the shear restraint wall made of the tubular support body.

According to the present invention, since the elastic body does not always function as a shear bearing, fatigue due to repeated relatively large shear deformation caused by the lateral displacement of the elastic body does not occur. In addition, since the upper structure can always be slidably supported while the load bearing function and the rotating bearing function are functioning, the elastic bearing device can be used even if seismic force acts during construction as well as after construction of the upper structure. The superstructure can be supported without exerting excessive lateral support force, and does not undergo shear deformation, so that the elastic body can be reduced in size.
Since the lateral movement and the shear deformation are indirectly restrained by the shear restraint wall via a hard member such as steel, the shear deformation of the elastic layer is not directly applied to the elastic layer without force. It can be reliably restrained. Further, since the high bearing load support member is restrained from lateral movement and shear deformation by the shear restraint wall rising from the base plate, no shear deformation occurs in the rubber layer. In addition, since the upper structure is slidably supported on the upper surface of the support member, the non-shear deformability is further ensured. Also,
According to the present invention, when the high bearing load supporting member is compressed and deformed under a high load, a force for shearing the upper and lower portions of the rubber layer acts, but the stress is applied to the upper and lower portions of the rubber layer. Since the reaction walls of the fitted upper and lower fitting support members are mechanically restrained by the shearing force of the bonding surface, the upper and lower rubber layers and the bonding surface of the rubber layer are not shear-destructed, and the rubber is not damaged. Stress concentration on a part of the outer peripheral edge of the bonding interface of the layer is reduced. In addition, R
By forming the annular concave portion by processing or the like, the concentration of stress on the outer peripheral edge of the rubber layer and the like is further alleviated. Therefore, when the rubber layer is subjected to a high load from above and is compressed and deformed, As a result, the outer surfaces of the rubber layers are substantially flush with each other, so that the outer surfaces of the rubber layers are less likely to peel off from the adhesive surfaces with the upper and lower fitting support members, can be smoothly compressed and deformed, and can absorb rotation and vibration of the spar. Further, since at least one or more reinforcing steel plates are embedded in the rubber layer, even when a high bearing pressure is applied, the internal stress of the rubber layer is widely distributed, and excessive local distortion of the rubber layer can be suppressed. it can.

[0010]

1 and 2 show a first embodiment of the present invention.
1 shows a bearing device 30 according to an embodiment;
In the lower support member 2 attached to the upper part of the lower structure 1, a positioning locking recess 3 is provided substantially at the center of the upper surface of the base plate 32. The lower part of the cylindrical member 4a is fixed by welding or the like to form a shear restraint wall 4, and the shear restraint wall 4 indirectly controls the relative lateral movement of the lower steel plate 9 and the upper steel plate 10 in the elastic bearing member 5. Or indirectly restrains the shear deformation due to the relative lateral displacement of the upper and lower ends of the elastic body (layer) 6 in the elastic bearing body 5 such as rubber. The planar shape of the inner space portion of the shear restraint wall 4 is set to be substantially the same as or similar to the planar shape of the outer side of the upper support member 12 described later, and is manufactured in a rectangular or circular shape. . A positioning spacer 8 such as a steel ring fitted to the steel short cylindrical body 4a is mounted on the upper surface of the lower support member 2 at the lower portion inside the shear restraint wall 4 by welding or the like. The lower portion of the locking stopper 11a (11), which is fixed and fitted and fixed to the concave portion of the lower steel plate 9 of the elastic bearing member 5 made of rubber or the like in the positioning and locking concave portion 3, is fitted and locked. The upper portion of the locking stopper 11b (11) fitted and fixed in the concave portion of the upper steel plate 10 in the body 5 is fitted and locked in the concave portion 12a on the lower surface side of the structure supporting upper support member 12.

A sliding support member 13 such as an ethylene tetrafluoride plate or a tetrafluoroethylene layer is fixed on the upper surface of the upper support member 12 with an adhesive or the like. A slide bearing member 13 such as a steel plate is fixed with screws or the like. Further, on the outer peripheral surface of the steel short cylindrical shear restraint wall 4 and the upper surface of the lower support member 2, reinforcing steel vertical ribs 14 are arranged at equal angular intervals and fixed by welding. The outer side surface of the upper support member 12 is disposed on the inner upper side of the cylindrical shear restraint wall 4 so as to be close to or in contact with the upper support member 12. Twelve sheet thicknesses are set so as to be located at the middle part (in the case of the drawing, substantially at the level of the center part of the sheet thickness). The lower support member 2 is inserted through the through hole 18 and is fixed by a bolt 15 such as an anchor bolt embedded in the lower structure 1 made of concrete or the like and a nut 16 screwed thereto.

A Teflon layer 39 is provided on the inner peripheral surface of the steel short cylindrical shear restraint wall 4 to smoothly move the upper support member 12 up and down. It is preferable to provide a Teflon layer also on the outer peripheral surface of the upper support member 12. The sliding surface between the inner surface of the steel short cylindrical shear restraint wall 4 and the outer peripheral surface of the upper support member 12 is preferably a slip surface having a low coefficient of friction. Further, if such a non-metallic Teflon layer 39 is provided, the upper support can be bent by bending of the upper structure without providing a gap between the inner peripheral surface of the shear restraint wall 4 and the outer peripheral surface of the upper support member 12. The member 12 is slightly tilted (rotated)
Even so, it can be supported while absorbing this.

The thickness of the upper support member 12 is such that the upper surface of the steel short cylindrical shear restraint wall 4 is substantially at the center of the plate thickness of the upper support member 12 in a state where the load of the upper structure is supported. Should be set at the level of As shown in FIG. 1, as shown in FIG. 1, the peripheral portion of the upper support member 12 is formed into a round portion in consideration of the rotation due to the bending of the upper structure (spar) 22, that is, an arc-shaped outer surface portion R. It is possible to smoothly follow the rotation due to the bending.

In the case of the above embodiment, the elastic bearing 5 is indirectly locked to the lower structure 1 via the lower support member 2 and indirectly horizontal to the steel short cylindrical shear restraint wall 4. The elastic body (layer) 6 in the elastic support 5 is locked so as not to be deformed by shearing, and the upper structure 22 is connected to the elastic support 5 via the upper support member 12 by being locked immovably in the direction. It is supported. A sliding support member 67 such as an ethylene tetrafluoride plate or an ethylene tetrafluoride layer or a stainless steel plate is fixed to the lower surface of the sole plate 38 on the upper structure 22 side. In the case of this embodiment, a bearing load support member 31 is constituted by the elastic support member 5 and the upper support member 12.

FIGS. 5 and 6 and FIG. 7 show a bearing device 30 according to a second embodiment and a third embodiment of the present invention, in which a high bearing load supporting member 31 is provided. The load supporting member 31 is supported by the lower supporting member 2 having a base plate 32 in a laterally moving and shear deformation manner, and is installed on the upper surface of the load supporting member 31 as a forced sliding type for simply supporting the upper structure. That is, the high bearing load support member 31 is installed on the upper surface of the base plate 32 installed on the lower structure, and a plane rising from the base plate 32 is arranged inside the circular or rectangular frame-shaped shear restraint wall 4 and is positioned beside it. Movement is restricted.

The high bearing load supporting member 31 is a single layer,
In addition, an annular concave portion 33 is formed on the outer peripheral surface of the elastic layer 6 such as a thin rubber by R processing or the like. A hard plate 34 such as a reinforcing steel plate is embedded in the elastic layer 6. The upper and lower portions of the elastic layer 6 have annular reaction walls 35a and 36, respectively.
An upper fitting support member 35 and a lower fitting support member 36 having a cup-shaped cross section having a are fitted. The contact surfaces between the inner surfaces of the face plates 35b, 36b of the upper and lower fitting support members 35, 36 and the upper and lower surfaces of the elastic layer 6 are adhesive surfaces 37,
The upper and lower portions of the elastic layer 6 are fitted inside the reaction walls 35a and 36a (pot portions).

In the above-mentioned high bearing load supporting member 31,
From above, for example, 200 kg / cm 2 of an arrow P (shown in FIG. 8)
When a high load such as 250 kg / cm2 acts on the elastic layer 6, a shear force in the direction of arrow P1 acts on the elastic layer 6, and the shear force is applied to the elastic layer 6 and the upper and lower fitting support members 35,
36 acts as a peeling force on the adhesive surface 37 of the elastic layer 6 with the face plates 35b, 36b. The reaction force walls 35a, 36a mechanically restrain the shearing force acting on the adhesive surface 37 of the elastic layer 6, and Without applying a shear force to the upper and lower parts of
In addition, the structure is such that stress concentration is reduced to a part of the elastic layer, and therefore, the elastic layer 6 is configured to sufficiently withstand a high bearing pressure even if the elastic layer 6 is thin.

Further, in addition to the reaction walls 35a and 36a of the upper and lower fitting support members 35 and 36, the presence of the annular recess 33 formed by the R processing of the elastic layer 6 allows the elastic layer 6 to have a high vertical supporting pressure. Since the annular concave portion 33 is eliminated, or is compressed and deformed so as to slightly expand outward so as not to substantially affect the bearing action of the elastic layer 6, stress is concentrated on a part of the rubber layer. Can be reduced, and the elastic layer 6
Bonding surface 3 between the upper and lower parts and upper and lower fitting support members 35 and 36
The force acting to peel off 7 is very small as compared with the case where there is no annular concave portion 33. Therefore, the support member 31 is structured to smoothly cope with a high bearing pressure.

In the second and third embodiments, FIG.
The problem of the bearing load supporting member 1 having the structure shown as a comparative example shown in FIG. That is, in the bearing load supporting member 68 having the structure shown as a comparative example shown in FIG. 30, when the load indicated by the arrow P is applied from above, the plurality of elastic layers 6 via the reinforcing steel plate 7 are compressed and deformed. The periphery of the elastic layer 6 bulges as an R-shaped bulged portion 62, and the upper and lower portions of the elastic layer 6 are extended in the lateral direction by the stress in the direction of arrow P1. Upper and lower support plate 6
Since a shearing force acts on the bonding surface 65 with the third and the 64 and acts to separate the bonding surface, the bearing member 66 composed of the single elastic layer 6 having the above structure has an advantage that its thickness is thin. on the other hand, in the case of a flat adhesive interface is Bearing stress is a limit of about 120 kg / cm @ 2, for example, Bearing stress to not 200Kg / cm2 250Kg / cm sq
Due to the shear displacement wall
It restrains the relative lateral movement of the bottom and bottom steel plates,
Is a type that does not always function the shear bearing function.
Since fatigue due to repeated relatively large shear deformation caused by the lateral displacement of the elastic body does not occur, the durability of the elastic body can be increased, and while the load bearing action and the rotation bearing action of the elastic bearing device function. In addition, since the upper structure can always be slidably supported,
Even if the seismic force acts during construction as well as after the construction of the superstructure, the superstructure can be supported without causing the elastic bearing device to exert an excessive lateral supporting force.
In addition, since it is a type that does not cause shear deformation, the elastic body can be made smaller than conventional bearing devices that cause shear deformation, so that the elastic bearing device can be downsized, and the structure is simple, so production is also easy. It is easy, and the transportation and installation work of the device can be performed relatively easily.
In addition, since the elastic layer of the load-bearing member is indirectly restrained from lateral movement and shear deformation by a shear restraint wall through a hard member such as steel, an unreasonable external force acts directly on the elastic layer. Without this, the shear deformation of the elastic layer can be reliably restrained. In addition, since the high bearing load supporting member is restrained from lateral movement and shear deformation by the shear restraint wall rising from the base plate, no shear deformation occurs in the elastic layer, and the upper structure is provided by the support member. By being slidably supported on the upper surface, the above-mentioned non-shear deformability is further ensured. Furthermore, according to the present invention, when the high bearing load supporting member is compressed and deformed under a high load, a shear force acts on the upper and lower portions of the elastic layer, but the stress is fitted on the upper and lower sides of the elastic layer. Since the reaction walls of the upper and lower fitting support members are mechanically restrained from shearing the adhesive surface, the elastic layer does not peel and shear break, and stress concentration on a part of the elastic layer is reduced Is done.
Further, since an annular concave portion is formed on the outer peripheral surface of the elastic layer by R processing or the like, compared with a case where the annular concave portion is not provided,
Stress concentration on a part of the elastic layer can be reduced, and when the elastic layer is compressed and deformed by receiving a high load from above, the outer peripheral surface of the elastic layer as a whole becomes smooth so as to be substantially flush. As it can be compressed and deformed, it does not exert a peeling effect on the adhesive surface with the upper and lower fitting support members, it can absorb vibrations, and the elastic layer can be made thin with a single layer, and the structure is simple and excellent effect There is.

[Brief description of the drawings]

FIG. 1 is a sectional view of a bearing device using a bearing load supporting member according to a first embodiment of the present invention.

FIG. 2 is a plan view of a bearing device using the bearing load supporting member shown in FIG.

FIG. 3 is a sectional view of the bearing load supporting member shown in FIG. 1;

FIG. 4 is a plan view of the bearing load supporting member shown in FIG. 3;

FIG. 5 is a sectional view of a bearing device using a high bearing load supporting member according to a second embodiment of the present invention.

6 is a plan view of a bearing device using the high bearing load supporting member shown in FIG.

FIG. 7 is a cross-sectional view of a bearing device using a high bearing load supporting member according to a third embodiment.

8 is a cross-sectional view of the high bearing load supporting member shown in FIG.

FIG. 9 is a sectional view of a high bearing load supporting member that can be used in the embodiment of the present invention.

FIG. 10 is a sectional view of a high bearing load supporting member that can be used in the embodiment of the present invention.

FIG. 11 is an explanatory cross-sectional plan view of a bearing device using a high bearing load supporting member according to a fourth embodiment of the present invention.

FIG. 12 is a sectional view of a high bearing load supporting member that can be used in an embodiment of the present invention.

FIG. 13 is a sectional view of a high bearing load supporting member that can be used in the embodiment of the present invention.

14 is a plan view of the bearing load supporting member shown in FIG.

15A is a sectional view of a bearing device using the bearing load supporting member shown in FIG. 13, and FIG. 15B is a sectional view of a bearing device using a modified example of the load supporting member.

FIG. 16 is a plan view of a lower support member or a lower steel plate having a reaction force bearing wall that can be used in the present invention.

17 is a sectional view of the lower steel plate with the lower support member or the reaction force bearing wall shown in FIG. 16;

FIG. 18 is a plan view of another example of a lower steel plate with a lower support member or a reaction force bearing wall that can be used in the present invention.

19 is a sectional view of the lower steel plate with the lower support member or the reaction force bearing wall shown in FIG. 18;

FIG. 20 is a cross-sectional view showing an installed state of a bridge bearing device.

FIG. 21 is a sectional view of a bearing device using a bearing load supporting member according to a tenth embodiment.

FIG. 22 is a plan view of the bearing device shown in FIG. 21.

FIG. 23 is a sectional view of a bearing device using a bearing load supporting member according to a seventh embodiment.

24 is a plan view of the bearing device shown in FIG.

FIG. 25 is a sectional view of a bearing device using a bearing load supporting member according to an eighth embodiment.

FIG. 26 is a plan view of the bearing device shown in FIG. 26;

FIG. 27 is a cross-sectional view showing an installation state of the bridge support device according to the embodiment shown in FIG. 21;

FIG. 28 is a cross-sectional view showing a state in which a bearing device using a bearing load supporting member according to a ninth embodiment is inverted and used.

FIG. 29 is a cross-sectional view showing a state in which a bearing device using a bearing load supporting member according to a tenth embodiment is inverted and used.

FIG. 30 is a cross-sectional view showing a shear deformation of a load supporting member including a laminated elastic layer as a comparative example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lower structure 2 Lower support member 3 Positioning and locking recess 4 Steel short cylindrical shear restraint wall 5 Elastic bearing 6 Elastic body 7 Reinforced steel plate 8 Spacer 9 Lower steel plate 10 Upper steel plate 11 Locking stopper 12 Upper support member DESCRIPTION OF SYMBOLS 13 Sliding support member 14 Reinforcement steel vertical rib 15 Bolt (anchor bolt) 16 Nut 17 Flange 18 Through hole 19 Fixing bolt 20 Female screw hole 21 Flange 22 Upper structure 23 Through hole 24 Inner peripheral surface 25 Outer peripheral surface 26 Annular surface Gap 27 Upper projecting part 28 Bearing flange 29 Step 30 Bearing device 31 High bearing load supporting member 32 Base plate 33 Annular concave part 34 Hard plate 35 Upper fitting support member 35a Annular reaction wall 36 Lower fitting support member 36a Annular reaction force Wall 37 Adhesive surface 38 Sole plate 39b Teflon layer 40 Irregular adhesive surface 42 Reaction force Wall 43 Low friction sliding plate 44 Fitting recess 45 Rubber coating layer 46 Buffer means 47 Steel girder 48 Floor slab 49 Connecting cross girder 50 Bolt 51 Mounting plate 52 Hanging support member 53 Upper support frame 54 Mounting plate 55 Upright support member 56 Lower support frame 57 Rubber damper 58 Deformable space 59 Thin steel plate 60 Press-contact support portion 61 Anchor bolt 62 R-shaped bulging portion 63 Upper support plate 64 Lower support plate 65 Bonding surface 66 Support member 67 Sliding support member 68 Circular hole 69 Lower flange

Continuation of the front page (56) References JP-A-8-326812 (JP, A) JP-A-9-210121 (JP, A) JP-A-9-242375 (JP, A) JP-A-9-279896 (JP) , A) Japanese Utility Model Hei 5-45272 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F16F 15/00-15/08 E01D 19/04 E04B 1/36 E04H 9/02 331

Claims (5)

(57) [Claims] 1. An elastic bearing device for a structure disposed between an upper structure and a lower structure, wherein the lower steel plate in the elastic bearing body integrally having an upper steel plate and a lower steel plate via an elastic layer includes: It is locked on the upper surface of the lower support member fixed to the lower structure so that it cannot move laterally , and is fixed to the lower structure.
A vertical shear restraint wall is provided on the upper surface of the lower support member
And arranged inside the shear restraint wall.
The relative position of the lower steel plate and the upper steel plate in the elastic bearing body
By restraining the lateral movement, the relative movement between the lower steel plate and the upper steel plate
Shear deformation of the elastic layer due to lateral displacement does not always function
Between the elastic layer and the shear restraint wall.
Annular gap is provided between, and wherein the other of the upper steel plate to the lower support member side is locked immovably relative movably and laterally in the vertical direction relative to the lower support member, and
Furthermore, it is locked on the inner surface of the shear restraint wall and the upper part of the upper steel plate.
Is the outer peripheral surface of the upper support member locked by the stopper for
The sliding surface is slidable, and the upper surface of the shear
Set the bell so that it is in the middle of the upper support
A sliding elastic support device for a structure , wherein the upper structure is always slidably supported in a lateral direction via a slide bearing material having a sliding surface provided on the upper steel plate. 2. An upper portion and a lower portion of an elastic layer inside a shear restraint wall rising from a base plate installed on a lower structure.
With an upper fitting support member and a lower fitting support member
Arrange the bearing load support member, by the shear restraint wall ,
The upper support member and the lower support member restrain the lateral movement and shear deformation of the high bearing load support member placed on the base plate.
Shear of elastic layer by restraining relative lateral movement of attachment support member
Deformation is restrained so as not functioning at all times, the high bearing capacity of the upper surface level of the upper fitted and support member mounted on top of the elastic layer of the load bearing member, protrudes than the top portion of the shear restraint wall, and the shear The upper part is fitted to the inner peripheral surface of the restraining wall.
An attachment support member is provided slidably up and down, and
The upper fitting support member and the lower fitting support member to be attached to the part,
Restrains lateral shear force due to high bearing stress of the elastic layer
An elastic reaction wall provided with a high bearing stress
To suppress the excessive local His only widely to distribute the internal stress of
For this purpose, at least one hard plate such as a reinforcing steel plate
Embedded in the elastic layer and stress concentration on the outer peripheral surface of the elastic layer
An annular concave portion is formed to alleviate the pressure, and a sole plate attached to the upper structure is slidably supported on the upper surface of the upper fitting support member. 3. An elastic bearing device for a structure disposed between an upper structure and a lower structure, wherein the lower steel plate in the elastic bearing body integrally including an upper steel plate and a lower steel plate via an elastic layer is provided. The upper part inside the shear restraint wall fixed to the structure and attached to the lower steel plate is the upper part
It is located close to or in contact with the outer surface of the steel
Due to the shear constraint wall , the lower steel
By restraining the relative lateral movement of the plate and the upper steel plate,
Shear of elastic layer due to relative lateral displacement of upper steel plate
The elastic layer is restrained so that the deformation does not always function;
An annular gap is provided between the upper steel plate and the shear restraint wall, and the other upper steel plate is locked so as to be vertically movable relative to the lower steel plate and immovable in the horizontal direction. And even earlier
Sliding surface between inner peripheral surface of shear constraint wall and outer peripheral surface of upper steel plate
Is a sliding surface and rises above the upper level of the shear restraint wall.
The upper structure is set to be located in the middle part of the upper steel plate, and the upper structure is always slidably supported in the lateral direction via a slide bearing material having a slip surface provided on the upper steel plate. Slide type elastic bearing device for structures. 4. An elastic bearing device for a structure disposed between an upper structure and a lower structure, wherein the lower steel plate in the elastic bearing body integrally including the upper steel plate and the lower steel plate via an elastic layer is provided. A shear restraint wall which is a columnar member fixed to the structure and provided in the center of the lower steel plate,
Elastic layer in the elastic support member is disposed on the outer side,
It said upper steel plate movably and is locked immovably engaged laterally relative vertical direction relative to the columnar member is inlaid on the columnar member, a lower steel plate and the upper part of the elastic member
The shear deformation of the elastic layer is restricted by restricting the relative lateral movement of the steel plate.
It is restrained from functioning at all times, and
An annular gap is provided between the shearing and restraining wall;
The inner peripheral surface of the upper steel plate contacts or approaches the outer peripheral surface of the shear
Placed in contact with the upper level of the shear constraint wall
The upper structure is supported so as to be always slidable in the lateral direction via a slide bearing material which is set to be located at an intermediate portion of the steel plate and has a slip surface provided above the upper steel plate. Sliding elastic bearing device for structures. 5. The other upper steel plate is movable in the vertical direction relative to the shear restraint wall made of the cylindrical support by a shear restraint wall made of a cylindrical support fitted and fixed to the lower steel plate. 4. The slide type elastic bearing device for a structure according to claim 3, wherein the slide type elastic bearing device is locked so as to be immovable in a lateral direction.