JP3018291B2 - 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 lower supporting member made of steel and an upper supporting member having a hemispherical convex portion at the lower portion and an upper structure supporting portion at the upper portion are fitted to each other, so that the supporting height is increased (thickened). There is a problem that the structure is complicated.

[0004]

SUMMARY OF THE INVENTION The present invention has been developed for the purpose of improving the above-mentioned problems.
The function (3) of the above-mentioned bearing operations (1) to (3), that is, the upper structure or the lower structure, which is made to always stop the shear deformation bearing operation and to be always supported by the elastic bearing device, It is an object of the present invention to provide an elastic bearing device which is slidable at all times during and after construction and is relatively permanent, and which can bear a relatively high bearing stress on the elastic bearing body.

[0005]

In order to achieve the above-mentioned object, in a sliding elastic support device for a structure according to the present invention, an elastic structure for a structure disposed between an upper structure and a lower structure is provided. In the 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, and the lower structure A shear restraint wall is provided vertically on the upper surface of the lower support member fixed to the object ,
Due to the shear restraint wall, the bullets arranged inside the
Lateral movement of lower and upper steel plates on a flexible support
The upper and lower steel plates relative to each other.
So that the shear deformation of the elastic layer due to
Bundled between the elastic layer and the shear constraint wall.
Gaps are provided, and wherein the other of the upper steel plate to the lower support member side is locked immovably relative to the vertical direction movable and laterally relative to the lower support member, and further wherein
A stopper for locking on the inner surface of the shear restraint wall and the upper part of the upper steel plate
The sliding surface with the outer peripheral surface of the upper support member
And the upper level of the shear restraint wall is supported
The upper structure is always slidably supported in the lateral direction via a slide bearing having a sliding surface provided on an upper part of the upper steel plate , which is set so as to be located at an intermediate portion of the member. It is characterized in that the bonding interface with the elastic layer in each steel plate is made rough, so that the bonding surface is enlarged and the shear resistance of the rubber layer is increased.

In the slide type elastic bearing device for a structure according to the present invention, the upper portion of the elastic layer and the inside of the shear restraint wall rising from the base plate installed on the lower structure .
And an upper fitting support member and a lower fitting support member
A high bearing load supporting member provided with the shear restraint wall.
Accordingly, by constraining lateral movement and shear deformation of the high Bearing load bearing member placed on the base plate, the upper fitted and supported
Due to the relative lateral displacement of the member and the lower fitting support
It is constrained that the shear deformation of the elastic layer does not always work ,
An upper surface of an upper fitting support member mounted on an upper portion of the elastic layer of the high bearing load support member is provided so as to protrude from a top of the shear restraint wall, and the upper level is provided on an inner peripheral surface of the shear restraint wall. provided fitting support member to be vertically slidable, the upper surface of the upper fitted and the supporting member, a sole plate attached to the upper structure slidably supported, and below the elastic layer
The upper fitting support member and the lower fitting support member to be attached to the part,
The lateral shear force due to the high bearing stress of the elastic layer is restricted.
An annular reaction wall is provided for bundling, the internal stress of the elastic layer due to a high bearing stress is widely distributed, and the elastic layer has a rough surface on at least one of the front and back surfaces to suppress excessive local distortion. Outside the elastic layer in which a hard plate such as a reinforced steel plate is embedded
On the peripheral surface, to reduce the stress concentration
A concave portion is formed, and the bonding interface between the upper fitting support member and the lower fitting support member attached to the upper and lower portions of the elastic layer of the high bearing load supporting member is roughened. It is characterized in that the surface is enlarged and the shear resistance of the elastic layer is increased.

Further, according to the present invention, there is provided an elastic bearing for a structure, which is disposed between an upper structure and a lower structure. The lower steel plate in the elastic bearing body integrally having the steel plate is fixed to the lower structure, and the upper part inside the shear restraint wall provided on the lower steel plate is an 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 always slidably supported in the lateral direction via a sliding bearing having a sliding surface provided on an upper part of the upper steel plate , which is set to be located at an intermediate portion of the upper steel plate,
The bonding interface between the upper steel plate and the lower steel plate with the elastic layer is roughened to enlarge the bonding surface and increase the shear resistance of the elastic layer.

Further, according to the sliding elastic bearing device for a structure according to the present invention, in the elastic bearing device for a structure disposed between the upper structure and the lower structure, the upper steel plate and the lower plate are provided via an elastic layer. The lower steel plate in the elastic bearing body integrally having the steel plate is fixed to the lower structure , and
In the center of the lower steel plate, there is a shear constraint wall consisting of a columnar member.
And an elastic layer on the elastic bearing body is provided outside the elastic bearing.
And the upper steel plate is fitted to the columnar member and
Can move vertically and horizontally relative to the columnar member
In the direction of the elastic bearing,
Elastic layer by restraining relative lateral movement of lower and upper steel plates
Is restrained so that the shear deformation of
An annular gap is provided between the elastic layer and the shear restraint wall.
And the inner peripheral surface of the upper steel plate on the outer peripheral surface of the shear restraint wall.
Faces are placed in contact or close proximity to each other and
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 the lateral direction via a slide bearing material having a slip surface provided on the upper steel plate, and the adhesive interface between the upper steel plate and the lower steel plate with the rubber layer is roughened. In this case, the adhesive surface is enlarged and the shear resistance of the elastic layer is increased.

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 it does not undergo shear deformation, so it can be used under high bearing stress, so that the elastic body can be downsized. The elastic layer of the load-bearing member is indirectly restrained from lateral movement and shear deformation by the shear restraint wall via a hard member such as steel, so that an unreasonable lateral external force acts directly on the elastic layer. Therefore, the shear deformation of the elastic layer 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, non-shear deformation is assured. Further, according to the present invention, when the high bearing load supporting member is compressed and deformed by receiving a high load, a force for shearing the upper and lower portions of the rubber layer acts, but the stress is applied to the rubber layer. Since the shear force of the adhesive surface is mechanically restrained by the reaction walls of the upper and lower fitting support members fitted vertically, the upper and lower portions of the rubber layer and the adhesive surface of the rubber layer are not sheared and destroyed. In addition, stress concentration on a part of the outer peripheral edge portion of the bonding interface of the rubber layer is reduced. Further, since the annular concave portion is formed on the outer peripheral surface of the rubber layer by R processing or the like, the concentration of stress on the outer peripheral edge portion of the rubber layer and the like is further alleviated. As a result, the outer surface of the rubber layer becomes substantially the same surface as a whole, thereby having little peeling effect on the adhesive surfaces with the upper and lower fitting support members, and can be smoothly compressed and deformed, and the rotation of the spar And can absorb vibration. 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. In the present invention, the bonding surface of the rubber layer in the steel plate or the reinforcing steel plate in contact with the rubber layer or the upper fitting support member and the lower fitting support member is roughened to enlarge the bonding surface and shear the rubber layer. Since the resistance is increased, the integral bonding strength is improved, and the shear resistance and the peel resistance against a high bearing pressure are increased.

[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 of the elastic layer 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. .
An uneven adhesive surface 40 is formed on the entire upper surface of the lower steel plate 9 and the lower surface of the upper steel plate 10 of the elastic bearing body 5 by an annular corrugated roll or knurling process. The adhesive interface between the elastic layer 6 and the elastic layer 6 when the elastic layer 6 is compressed and deformed is compared with a flat adhesive surface because the adhesive interface between the elastic layer 6 and the elastic layer 6 is formed by a corrugated or knurled process. Separation due to shearing force applied to the bonding surfaces with the steel plates 9 and 10 can be more effectively prevented. 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 below,
It 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. A locking stopper 11 which is fixed and fitted and fixed in the concave portion of the lower steel plate 9 of the elastic bearing member 5 made of rubber or the like in the positioning locking concave portion 3.
The upper part of the locking stopper 11b (11), the lower part of a (11) is fitted and locked, and the upper part of the locking stopper 11b (11) fitted and fixed in the recess of the upper steel plate 10 in the elastic bearing body 5 is
2 is fitted and locked in the concave portion 12a on the lower surface side.

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 having a substantially semicircular shape 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. An upper fitting support member 35 and a lower fitting support member 36 having a cup-shaped cross section having annular reaction force walls 35a and 36a are fitted on the upper and lower portions of the elastic layer 6, respectively.
Face plates 35b, 36 of the upper and lower fitting support members 35, 36
The contact portion between the inner surface of the elastic layer 6 and the upper and lower surfaces of the elastic layer 6 is an adhesive surface 37.
And the upper and lower portions of the elastic layer 6 are reaction walls 35a,
36a is fitted inside (a pot portion). An uneven corrugated roll or knurling process is applied to the entire circular surface of the lower surface of the upper fitting support member 35 and the upper surface of the lower fitting support member 36 of the high bearing load support member 31 and the front and back surfaces of the hard plate 34. The surface 40 is formed, so that the bonding interface between the upper fitting support member 35, the lower fitting support member 36, and the hard plate 34 with the elastic layer 6 is an uneven bonding surface 40 formed by annular corrugation or knurling. As a result, the peeling due to the shear force applied to the bonding surface between the elastic layer 6 and the steel plates 9 and 10 when the elastic layer 6 is compressed and deformed can be more effectively prevented as compared with the flat bonding surface. In the second embodiment shown in FIG. 5, a through hole is provided in the center of a hard plate 34 made of a reinforcing steel plate, and the upper and lower rubber layers of the hard plate 34 are integrated.

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)
To When working with high loads such as 250 kg / cm @ 2, the elastic layer 6, arrow P ₁ direction shear force acts, the shearing force is an elastic layer 6 and the upper and lower fitted and the supporting member 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, it is configured to relieve concentration of stress on a part of the elastic layer, and the bonding interface between the upper fitting support member 35, the lower fitting support member 36, and the hard plate 34 with the elastic layer 6 is annular. Since the uneven adhesive surface 40 is formed by corrugation or knurling, the structure is such that even if the elastic layer 6 is thin, it can sufficiently withstand a high bearing pressure.

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. , together with the periphery of the elastic layer 6 bulges a R-shaped bulging portion 62, this is the upper and lower portions of the elastic layer 6 extends laterally worked arrow P ₁ direction stress, therefore, the elastic layer 6 And the upper and lower support plates 63,
Since a shearing force acts on the adhesive surface 65 with the adhesive layer 64 and acts to separate the adhesive surface, the bearing member 66 composed of the single elastic layer 6 having the above structure has an advantage that its thickness is small, In the case of a flat bonding interface, the bearing stress is limited to about 120 kg / cm2, for example,
The bearing stress cannot support a high load of 200 kg / cm 2 to 250 kg / cm 2, but as described above, the inventions in the second and third embodiments do not have such a problem.

More specifically, as shown in FIGS. 5 and 7, in the bearing device 30 having the high bearing load supporting member 31 as one of the main elements, the upper / lower fitting support member 35 of the high bearing load supporting member 31 is used. , 36 are adjacent to the shear restraint wall 4 and are higher than the height H1 of the upper surface 35c of the upper fitting support member 35 fitted on the elastic layer 6 of the high bearing load support member 31. The height H of the top surface 4b of the base 4 is provided at a lower position.

Therefore, the sole plate 38 attached to the lower surface of the upper structure is slid on the upper surface 35c of the upper fitting support member 35 of the high bearing load supporting member 31 located higher than the top surface 4b of the shear restraint wall 4. It can be freely and elastically supported.

In addition, as described above, the upper fitting support member 3
Since the lower part of 5 is lower than the top surface 4 b of the shear restraint wall 4, the elastic layer 6 of the high bearing load support member 31 and the upper fitting support member 35 are restrained by the shear restraint wall 4 from being subjected to shear deformation. Supported. Further, since the sole plate 38 attached to the upper structure is slidably supported on the upper surface 35c of the upper fitting support member 35 of the high bearing load supporting member 31, as described above, the high bearing load supporting member is provided. The elastic layer 31 is not sheared and deformed, and is a so-called forced slide type support. And in the high bearing load support member 31,
The adhesive interface between the hard plate 34 such as a reinforcing steel plate and the elastic layer 6 and the adhesive interface between the upper and lower fitting support members 35 and 36 and the elastic layer 6 are formed on the entire inner lower surface of the upper fitting support member 35 and the lower fitting support member. An uneven adhesive surface 40 is formed by forming an uneven portion by annular corrugation or knurling on the entire inner upper surface of the hard disk 36 and the entire front and back surfaces of the hard plate 34 such as a reinforcing steel plate. By making the uneven adhesive surface 40, the peeling by the shear force applied to the elastic layer 6 and the reinforcing steel plate 40 when the elastic layer 6 is compressed and deformed is more effective than the flat adhesive surface. Can be stopped.

Further, in order to smoothly move down the upper fitting support member 35 when the supporting member 31 bears a high load, the inner peripheral surface of the shear restraint wall 4 and the upper fitting member 35 are connected. It is preferable to provide a Teflon layer 39 on the sliding surface. It is also preferable to provide a Teflon layer 35d on the upper surface 35c of the upper fitting support member 35 that slidably supports the sole plate 38 attached to the upper structure.

FIG. 9 is a sectional view showing a high bearing load supporting member 31a which can be used in the embodiment of the present invention. In this load supporting member 31a, the adhesive interface between the hard plate 34 such as a reinforced steel plate and the elastic layer 6 is formed on the entire front and back surfaces of the hard plate 34 such as a reinforced steel plate in the same manner as in the third embodiment. By forming an uneven portion by such as, the uneven adhesive surface 40 is formed. By forming the uneven adhesive surface 40, the elastic layer 6 when the elastic layer 6 is compressed and deformed and the reinforcing steel plate 40 are compared with the flat adhesive surface.
Peeling due to the shearing force applied to the adhesive surface with the adhesive can be more effectively prevented.

FIG. 10 is a sectional view showing a high bearing load supporting member 31b usable in the embodiment of the present invention. In the load support member 31b, the adhesive surface between the upper and lower fitting support members 35 and 36 and the elastic layer 6 is an uneven adhesive surface 40 formed by an annular corrugation or knurling, as in the third embodiment. By forming the uneven adhesive surface 40, the upper and lower portions of the elastic layer 6 when the elastic layer 6 is compressed and deformed, and the upper and lower fitting support members 3 as compared with the flat adhesive surface.
Separation due to the shearing force applied to the bonding surface with the adhesive layers 5, 36 can be more effectively prevented.

FIG. 11 is a sectional view showing a bearing device 30 using a specially adapted high bearing load supporting member 31c according to a fourth embodiment of the present invention. In this support member 31c, an elastic layer sandwiched between upper and lower fitting support members 35 and 36 has a laminated structure, and each has an annular concave portion 33 formed by R processing.
And a lower elastic layer 6b having an upper elastic layer 6a and a lower elastic layer 6b.
b, an intermediate support member 41 is provided, and a reaction wall 42 protruding in the vertical direction is provided at an end edge of the intermediate support member 41. In a pot portion formed by the reaction wall 42, Lower part of upper laminated elastic layer 6a and lower laminated elastic layer 6
b. In the present embodiment, the uneven support portion 40 is formed by forming an uneven portion by an annular corrugation or knurling on the entire inner surface and the inner lower surface of the intermediate support member 41 in the present embodiment. Other configurations of the bearing device 30 are the same as those of the bearing device 30 shown in FIG. 5 or FIG.

The high bearing load supporting member 31c shown in FIG. 11 is used as a specially adapted load supporting member, for example, when there is a space in the vertical direction and when the upper structure is supported by a soft compression spring. it can.

FIG. 12 shows a high bearing load supporting member 31d which can be used in the embodiment of the present invention. In the high bearing load supporting member 31d, a hard plate 34 such as a thick reinforcing steel plate is buried inside the elastic layer 6, and upper and lower fittings having reaction walls 35a, 36a on the upper and lower sides of the elastic layer 6 at the outer periphery. Attachment support members 35 and 36 are attached. Further, the upper attachment support member 35 is provided with a concave portion 44 for fitting a low friction sliding plate 43 made of a Teflon plate. The entire surface surrounding the surfaces of the members 35 and 36 and the surface exposed to the outside of the elastic layer 6 located therebetween is covered with a thin rubber coating layer 45.

In the high bearing load supporting member 31d, since the upper and lower supporting members 35 and 36 made of steel are completely covered with the rubber coating layer 45, deterioration due to rust or the like is prevented and durability is improved. . The low-friction sliding plate 43 made of a Teflon plate is fitted into the fitting concave portion 44 of the upper fitting support member 35 and is adhered by an adhesive, so that the integration of the two members is ensured. Become.

Further, as shown in the figure, the portions of the upper and lower fitting support members 35, 36 projecting laterally from the elastic layer 6, that is, the reaction force walls 35a, 36a do not support the load from above. Low friction sliding plate 43 receiving a load from above
Is fitted and fixed in the fitting concave portion 44 substantially overlapping the elastic layer 6 and is not provided in the reaction force walls 35a and 36a. Therefore, the low friction sliding plate 43 made of a Teflon plate is provided. It is economical because materials can be kept to a minimum. Other configurations are the same as those of the high bearing load support member 31 shown in the second embodiment. Also,
The high bearing load support members 31, 31a, 31b, 31
The planar shapes of c and 31d may be either circular or rectangular.

FIG. 13 and FIG. 14 show a high bearing load supporting member 31 of an increased bonding interface type in which the bonding area between rubber and steel plate is increased. FIG. 15 (a) shows a bearing device 30 using the high bearing load supporting member 31. When the high bearing load supporting member 31 is circular,
A large number of annular grooves 71 are formed concentrically on the steel upper and lower plates, and in the case of a rectangular shape, the above-described concentric annular grooves 71 or lattice-like grooves or a lattice-like groove as described above. By forming a groove made of an appropriate combination, it is formed so as to improve the integral bonding strength between the elastic layer such as rubber and the steel face plate, and is configured to improve the shear resistance and the peel resistance. Have been. In this embodiment, as in the case of the first embodiment, the entire surface of the lower steel plate 9 and the lower surface of the upper steel plate 10 in the elastic bearing 5 is provided with an uneven adhesive surface 40 formed by an annular corrugated roll or knurling. May be formed.

FIG. 15A shows a fifth embodiment of the present invention using the high bearing load supporting member 31 shown in FIGS.
1 shows an elastic bearing device according to an embodiment. In this bearing device 30, a high bearing load supporting member 31 is laterally moved and sheared and restrained by a lower supporting member 2 provided with a base plate 32, and is simply slidably mounted on an upper surface of the load supporting member 31. It is installed as a forced slide type that supports the 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 the plane rising from the base plate 32 is arranged inside the circular or rectangular frame-shaped shear restraint wall 4 and the Lateral movement is restricted.

As a modification of the above embodiment, FIG.
As shown in (b), the upper steel plate 10 is laterally extended, that is, a steel plate 10 with an extended flange made of a thick steel plate serving also as the upper support member 12 is formed. The lower steel plate 9 of the elastic body 5 is fitted and locked. In such a configuration, since the steel plate 10 is a thick steel plate, a relatively large vertical sliding distance of the steel plate 10 with the overhang flange can be allowed.

FIGS. 16 and 17 are explanatory views showing an example of forming a shear deformation restraining wall which can be used in the present invention. In both cases of the lower support member 2 and the lower steel plate 9, FIGS. That is, the steel short tubular body 4a is disposed on the upper surface of the lower support member 2 or the lower steel plate 9, and the base end of the steel short tubular body 4a is welded or the like. The shear restraint wall 4 is formed on the lower support member 2 or the lower steel plate 9 to be fixed or integrally connected. In the case of this form, it is a form that is closed in a plane, and 360 in a horizontal direction such as a horizontal direction.
° A constant strength can be exhibited in all directions. In addition, in FIG. 16 thru | or FIG.
4 is appropriately provided.

FIGS. 18 and 19 show the same as above.
It is explanatory drawing which shows the other example at the time of forming the shear deformation constraining wall which can be formed and used in either of the lower support member 2 or the lower steel plate 9, and shows the lower support member 2 or the lower steel plate 9. On the upper surface, a plurality (four in the case shown) of flat circular arc-shaped steel bearing wall units 4c are arranged at equal angular intervals.
A shear restraint wall 4 is formed and fixed on the circular locus. As described above, the shear restraint wall 4 may be formed on the lower support member 2 or may be formed on the lower steel plate 9.

FIG. 20 shows a usage example according to the form shown in FIG. 7 as a typical usage form of the bearing device of each of the embodiments according to the present invention. That is, FIG. 20 is a longitudinal sectional view showing a bridge support device 30 installed on the upper surface of the substructure 1 such as an abutment or a pier. In the support device 30, the high bearing load support member 31 and the buffer means 46 are provided. Are arranged separately. By the support member 31, a steel girder 4 made of H-shaped steel as an upper structure 22 constituting a bridge such as a road bridge.
7 are supported in parallel, and a floor slab 48 is supported by the steel girder 47. In addition, the above-mentioned buffering means 46 buffers the omnidirectional swing of the horizontal force, the upward lift, and the rotational force of the upper structure. Further, the left and right steel girders 47 are connected and reinforced by connecting beams (not shown).

In the buffer means 46, a mounting plate 51 fixed with bolts 50 or the like is provided below the connecting beam 49.
An upper support frame 53 comprising a plurality of hanging support members 52 integrally provided with the mounting plate 51 and spaced apart in a substantially comb-tooth shape is provided. A lower support frame comprising an upper portion of the lower structure 1 and a plurality of upright support members 55 provided integrally with a mounting plate 54 fixed to the upper portion with an anchor bolt 61 or the like and spaced apart in a substantially comb-tooth shape. 56 are provided. And the hanging support member 5
2 and the upright support member 55 are engaged with each other from above and below, and a plurality of constant gaps are formed in the horizontal direction, and a certain gap is formed in the vertical direction. Further, a block-shaped rubber damper 57 is provided as a specific example of the elastic body so as to fill the gap in the horizontal direction. One side of the rubber damper 57 is fixed to the hanging support member 52, and the other side is the upright supporting member. 55.

The above-described separation type bridge bearing device 30 operates as follows. The load of an upper structure such as a bridge such as a road bridge supported by a steel girder 47 is the high bearing load supporting member 31.
The elastic layer 6 has no load on the buffer means 46. When a large earthquake occurs, a downward force acting on the steel girder 47 can be dispersed and compressed by the elastic layer 6 being compressed and deformed in the shear restraint wall 4 via the deformation allowable space 58. With respect to the upward lift acting on the steel girder 47, the rubber damper 5
7, the steel girder 47 and the lower structure 1 are connected to each other via the buffer means 46 having the upper frame 53 and the lower frame 56. Controlled smoothly.

The sole plate 38 attached to the lower surface of the lower flange 69 of the steel girder 47 with respect to the horizontal force acting on the steel girder 47 due to the earthquake, that is, the force in the direction of the bridge axis and the direction perpendicular to the horizontal axis. Is in pressure contact with the upper surface Teflon layer 35d of the upper fitting support member 35 of the support member 31 via the thin steel plate 59 such as a stainless steel plate, and the press-contact support portion 60 is slidably joined to each other. The horizontal force is attenuated by the sliding friction. In addition to this, at the same time, the rubber damper 57 of the buffer means 46 is attenuated by shear deformation in the bridge axis direction, and is compressed and deformed in the direction perpendicular to the bridge axis. Attenuated.

Further, against the rotational force acting on the steel girder 47 due to the earthquake, the compression deformation of the elastic layer 6 of the high bearing load supporting member 31 and the shear deformation of the rubber damper 57a of the buffering means 46 interact effectively. Can be attenuated.

In the case of the above embodiment, a description has been given of a bearing device in which the lower support member 2 and the elastic bearing member 5 are combined and combined, but an embodiment in which the size can be relatively reduced is described next. Will be described with reference to the drawings.

FIGS. 21 and 22 show a sixth embodiment of the present invention, wherein the lower rectangular plate 9 of the elastic bearing 5 is wider and thicker than the circular upper plate 10. On the upper surface of the lower steel plate 9, female screw holes 20 are provided at substantially equal angular intervals on a circular locus. A steel short cylindrical body 4b with a flange, in which a steel flange 17 is integrally connected to the outer peripheral side of the upper surface of the lower steel plate 9.
A through hole 18 is provided on the flange 17 at equal angular intervals, and a fixing bolt 19 inserted through the through hole 18 is screwed and fixed to a female screw hole 20 provided in the lower steel plate 9. Thus, a shear restraint wall 4 is formed. In this case, the upper steel plate 10 and the lower steel plate 9 are integrally fixed to the elastic body 6 so as to be inseparable by integral molding, baking, or an adhesive. The upper part of the cylindrical shear restraint wall 4 is disposed so as to approach or contact the outer surface of the upper steel plate 10. The Teflon layer 39b may be provided on the inner peripheral surface of the shear restraint wall 4, and the outer peripheral surface of the upper steel plate 10 may be an arc-shaped outer surface portion R as in the first embodiment. In this embodiment, a circular surface serving as an adhesive surface with the rubber layer excluding the peripheral portion of the upper surface of the lower steel plate 9 and the lower surface of the upper steel plate 10 in the elastic bearing body 5 has an uneven surface formed by an annular corrugated roll or knurling. An adhesive surface 40 is formed, and thus each steel plate 9,
The adhesive interface between the elastic layer 10 and the elastic layer 6 is formed as an uneven adhesive surface 40 formed by an annular corrugation or a knurling process. 6 and the steel plates 9 and 10 can be more effectively prevented from peeling due to shearing force applied to the bonding surface.

In the case of this embodiment, a slide support member 13 such as an ethylene tetrafluoride plate or an ethylene tetrafluoride layer or a stainless steel plate is provided on the upper surface of the upper steel plate 10, and the elastic support body 5 is provided on the lower structure 1. The lower structure steel plate 9 is directly fixed to the lower structure 1 by the anchor bolts 15 and the nuts 16 screwed thereto, and the upper structure steel plate 9 is connected to the upper structure steel plate 10 without the upper support member 12 interposed therebetween.
However, other configurations are the same as those in the above-described embodiment. In the case of this embodiment, the upper steel plate and the lower steel plate are integrally formed so as to be inseparable by the elastic body 6 fixed to them, so that the transfer of the bearing device does not become complicated. It can be transported relatively easily. When the cylindrical shear restraint wall 4 is manufactured, two half-cylindrical bearing wall units may be combined and configured.
Or you may comprise so that three or more division | segmentation cylindrical support wall units may be combined.

FIGS. 23 and 24 show a seventh embodiment of the present invention, in which a columnar shear restraint wall 4 is integrally provided at the upper center of a rectangular lower steel plate 9, and the shear restraint wall is provided. 4, an upper steel plate 10 having a circular hole 68 at the center is fitted. On the upper surface of the lower steel plate 9, an annular elastic layer made of rubber and a lower portion of an annular elastic body 6 formed by alternately stacking annular steel plates so as to be embedded therein are integrally fixed by integral molding or baking. The inner peripheral surface 24 of the circular hole 68 at the center of the upper steel plate 10 is arranged so as to be in contact with or close to the outer peripheral surface of the cylindrical shear restraint wall 4, and the upper surface level of the shear restraint wall 4 is The upper steel plate 10 is disposed at an intermediate portion of the thickness thereof. In the case of this embodiment, in order to improve weather resistance such as rust prevention, a rubber coating 72 is provided on a side outer peripheral surface of the elastic bearing member 5 and is connected to the rubber coating 72 so as to be integrally connected thereto. A rubber coating 73 is provided on the upper surface of the device 10. In this embodiment, the upper surface of the lower steel plate 9 and the annular upper steel plate 1 in the elastic bearing body 5 are provided.
An uneven adhesive surface 4 formed by an annular corrugated roll or knurling process on the annular surface of the lower surface
0, so that each steel plate 9, 10 and the elastic layer 6
The adhesive interface between the elastic layer 6 and the elastic layer 6 when the elastic layer 6 is compressed and deformed is compared to a flat adhesive surface because the adhesive interface between the elastic layer 6 and the flat surface is formed by a corrugated or knurled process.
And peeling by the shearing force applied to the bonding surfaces with the steel plates 9 and 10 can be more effectively prevented.

An annular gap 26 is interposed between the inner peripheral surface 24 of the elastic member 6 and the outer peripheral surface of the columnar shear restraint wall 4 to deform the elastic member 6 when it receives a compressive force. An allowable space is formed.

In the case of the above embodiment, the lower steel plate 9 of the elastic bearing 5 is directly fixed to the lower structure 1 by the anchor bolt 15 and the nut 16 screwed to the lower structure. Are directly supported by the upper steel plate 10 without the intervention of the upper support member 2.

FIG. 25 and FIG. 26 show an eighth embodiment of the present invention, in which an upper protruding portion 27 having the same planar contour as the circular or rectangular upper steel plate 10 at its upper portion and its upper portion are shown. On the upper surface of the bearing flange 28 on the low level side of the step portion 29 in the stepped lower steel plate 9 having the bearing flange 28 connected to the bearing protrusion 27, the shear restraint wall 4 made of a steel cylindrical body is provided with the upper protrusion. The upper protruding portion 27 of the step portion 29
The shear restraint wall 4 is restrained so as not to be able to move in the horizontal direction on the vertical outer peripheral surface of the upper steel plate 10 and the upper surface level of the cylindrical shear restraint wall 4 is an intermediate portion of the thickness of the upper steel plate 10 (in the illustrated case, substantially the center portion). ). In this embodiment, the upper protrusion 27, the step 29, and the bearing flange 2
And a lower steel plate 9 provided with the above. When this embodiment is used in an inverted arrangement as described later, the shear restraint wall 4 may be fixed to the lower steel plate 9 by an appropriate fixing means such as welding. Other configurations are the same as those in the embodiment shown in FIG.

FIG. 27 shows an example of use of the bearing device shown in FIG. 21 as a typical use mode of the bearing device of the embodiment after FIG. 21 according to the present invention. Since the structure other than the elastic bearing device is the same, the same portions are denoted by the same reference numerals and description thereof will be omitted.

FIGS. 28 and 29 show ninth and tenth embodiments of the present invention. In these embodiments, any of the devices shown in the first to eleventh embodiments will be described. FIG. 28 is a state in which the configuration shown in FIG. 5 is inverted and disposed as a representative example, and the lower support member 2 is made of a steel plate or the like. A sliding bearing 13 such as a tetrafluoroethylene plate is fixedly formed on the upper surface, a shear restraint wall 4 is formed downward on the upper support member 12, and a bearing load supporting member 31 is disposed on the shear restraint wall 4. The sliding support layer 35d such as a tetrafluoroethylene plate or layer or a stainless steel plate is provided on the lower surface of the lower fitting support member 36.

In the case of FIG. 29, FIG.
1 is a configuration in which the configuration shown in FIG.
The lower surface of the lower steel plate 9 is provided with a shear-restraining wall 4, and the lower surface of the lower steel plate 9 is provided with a slide bearing layer 35d similar to that described above. Are slidably mounted on a sliding bearing member 13 such as

In the case of the embodiment shown in FIGS. 28 and 29, the upper end of the anchor bolt 15 embedded and fixed in the lower structure 1 is welded to the lower surface of the lower support member 2 as shown by a two-dot chain line. Fixed. Also, the embodiment in which the upper structure 22 is a concrete structure (girder) 22 is illustrated. That is, the upper support member 1
2 is fixed to the upper structure 22 by an anchor bolt 69 and a nut 70 screwed thereto. When the upper structure 22 is made of steel, the upper support member 12 and the lower support member 2 are appropriately attached by bolting or welding, as in the first to eleventh embodiments. If the upper structure 22 is a concrete structure, it may be mounted with anchor bolts or the like.

The embodiment shown in FIGS. 1 to 20 has a composite structure of the elastic bearing member 5, the upper support member 12, and the lower support member 2, whereas the embodiment shown in FIGS. Can be said to be a built-in type or an integrated type structure in which a portion that functions similarly to the lower support member or the upper support member (when inverted) is integrally or fixedly formed on the elastic support 5.

In the embodiment of the present invention, when the rubber layer is thin, a hard plate may not be embedded, but a hard plate such as a reinforcing steel plate embedded in the rubber layer (or elastic layer) 6 may be used. For example, at least one or more steel sheets having a thickness of 1 mm or more may be embedded, and a plurality of steel sheets may be embedded as needed. When used for high bearing pressure, the thickness of a hard plate such as a reinforcing steel plate embedded in the rubber layer (or elastic layer) 6 is appropriately selected, for example, from 1 to 100 mm, and a plurality of hard plates are embedded as needed. What should I do? If an irregular adhesive surface 40 is formed on both the front and back surfaces of a hard plate such as a reinforced steel plate by annular corrugation or knurling, the integrated area is further increased by the increase in the adhesive area, and the peeling resistance and shear deformation are increased. Resistance can be increased. If the bonding interface between the lower steel plate 9, the upper steel plate 10, the intermediate support member 41, the upper fitting support member, and the rubber layer of the lower fitting support member in each of the above embodiments is roughened or unevenly engaged, a flat surface is obtained. Compared to the bonding interface, the increased bonding area due to the uneven engagement or the roughened surface further increases the integral bonding, so that the peeling resistance and the shear deformation resistance can be increased, so that it can be used even at a high bearing stress. can do.

When the slide type elastic bearing device according to the present invention is used, it may be used together with a lateral movement (movement in the direction perpendicular to the bridge axis) damping means 46 as shown in FIGS. Alternatively, instead of the buffer means 46, a known seismic isolation device configured by alternately stacking a rubber layer and a hard plate such as a steel plate in the vertical direction is disposed between the upper structure 22 and the lower structure 1. You may do so.

[0055]

As described above, according to the bearing device of the present invention, the upper structure and the lower structure can be moved in the horizontal direction.
Even if relative displacement occurs, the shear force restraint
Since the relative lateral movement between the steel plate and the lower steel plate is restricted and 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 occurs. Since it is not possible to improve the durability of the elastic body, and to make the load bearing function and the rotation bearing function of the elastic bearing device function, and to be able to always support the upper structure so that it can slide freely, after the construction of the upper structure Of course, even if seismic force acts during construction, the superstructure can be supported without causing the elastic bearing device to exert 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 bonding interface with the elastic layer of each steel plate at both upper and lower ends of the elastic bearing body is roughened, the bonding surface is enlarged and the shear resistance of the rubber layer is increased, so that a relatively high bearing stress Can be dealt with with a simple configuration.
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 The upper and lower fitting support members attached to the upper and lower portions of the rubber layer of the high bearing load supporting member have a roughened adhesive interface with the rubber layer, or reinforcement embedded in the rubber layer. The bonding interface with the rubber layer of a hard plate such as a steel plate is roughened to enlarge the bonding surface and increase the shear resistance of the rubber layer by simple means. Improves strength and shears against high bearing pressure It is possible to increase the drag and peel resistance. In addition, since the annular concave portion is formed on the outer peripheral surface of the elastic layer by R processing or the like, stress concentration on a part of the elastic layer can be reduced as compared with the case where the annular concave portion is not provided. When the elastic layer is compressed and deformed by receiving a high load from above, it can be smoothly compressed and deformed so that the outer peripheral surface of the elastic layer as a whole is substantially the same, so that the elastic layer peels off from the adhesive surface with the upper and lower fitting support members. There is an excellent effect that it has little effect and can absorb vibrations of the order of magnitude, and that the elastic layer can be made thin with a single layer and the structure is simple.

[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 installation state of a bridge bearing device according to a sixth embodiment.

FIG. 21 is a cross-sectional view of a bearing device using a bearing load supporting member according to a seventh 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 an eighth 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 a ninth 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 tenth embodiment is inverted and used.

FIG. 29 is a cross-sectional view showing a state where the bearing device using the bearing load supporting member according to the eleventh embodiment is used in an inverted manner.

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-9-279896 (JP, A) JP-A-9-242375 (JP, A) JP-A 9- 210121 (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

Claims (4)

(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: A shear constraint wall is provided on the upper surface of the lower support member fixed to the lower structure so as not to be able to move laterally, and is provided vertically on the upper surface of the lower support member fixed to the lower structure.
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
Restrains lateral movement and sets the relative lateral position between the lower and upper steel plates.
Shear deformation of the elastic layer due to displacement in the direction does not always work
Between the elastic layer and the shear restraint wall.
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
A lock strike is provided between the inner surface of the shear restraint wall and the upper portion of the upper steel plate.
Sliding surface with the outer peripheral surface of the upper support member locked by the lid
Is a sliding surface and rises above the upper level of the shear restraint wall.
The upper structure is always slidably supported in the lateral direction via a slide bearing having a sliding surface provided on an upper part of the upper steel plate. A slide type elastic bearing device for a structure, characterized in that a bonding interface with an elastic layer of each steel plate of a body is roughened to enlarge an adhesion surface and increase a shear resistance of a rubber layer. 2. Inside the shear constraint wall rising from the base plate installed on the lower structure, the upper and lower elastic layers are provided.
Part provided with an upper fitting support member and a lower fitting support member
A high bearing load supporting member is arranged, and the
Ri, and restrain lateral movement and shear deformation of the high Bearing load bearing member placed on the base plate, the upper fitted and the support member
Due to the relative lateral displacement of the support member and the lower fitting support member
The shear deformation of the layer is restrained so as not to function at all times, and the upper surface level of the upper fitting support member mounted on the upper part of the elastic layer of the high bearing load support member is provided so as to protrude from the top of the shear restraint wall, And the upper fitting support member is provided slidably up and down with respect to the inner peripheral surface of the shear restraint wall, and the upper plate of the upper fitting support member slidably supports the sole plate attached to the upper structure, Above and below the elastic layer
The upper fitting support member and the lower fitting support member to be mounted are
Constraining lateral shear forces due to high bearing stress of elastic layers.
An annular reaction wall is provided to disperse the internal stress of the elastic layer due to a high bearing stress level, and to suppress excessive local distortion, at least one or more of the elastic layer has a rough surface on both front and back surfaces. Outer peripheral surface of elastic layer in which hard plate such as steel plate is embedded
To reduce stress concentration
To form a part, the adhesive surface by the adhesive interface rough surface of the elastic layer in the high bearing capacity load bearing member of the elastic layer of the upper and lower part fitted top mounted attachment support member and the lower fitted and the support member A slide type elastic bearing device for a structure, characterized in that the expansion of the elastic layer and the shear resistance of the elastic layer are increased. 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 the upper steel plate and the lower steel plate via an elastic layer is provided. The upper inside of the shear restraint wall fixed to the structure and provided on the lower steel plate is the upper steel plate.
It is arranged so as to be close to or in contact with the outer surface,
The cross-sectional restraining wall, the upper and lower steel plates in the elastic support body
Restrains the relative lateral movement of the lower and upper steel plates
The shear deformation of the elastic layer due to the relative lateral displacement of the plate
It is restrained from functioning at all times, and
An annular gap is provided between the upper and lower steel plates , 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 .
The sliding surface between the inner peripheral surface of the shear restraint wall and the outer peripheral surface of
And the upper level of the shear constraint wall is an upper steel plate.
The upper structure is always slidably supported in the lateral direction via a sliding bearing having a sliding surface provided on the upper steel plate , the upper structure being set so as to be located at an intermediate portion of the upper steel plate and the lower steel plate. A slide-type elastic bearing device for a structure, characterized in that an adhesive interface with an elastic layer is roughened to enlarge an adhesive surface and increase shear resistance of the elastic layer. 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 formed in a lower portion. Fixed to a structure and said lower part
A shear restraint wall consisting of a columnar member was provided at the center of the steel plate.
Is, the elastic layer is arranged that put the elastic bearing body on the outside
The upper steel plate is fitted into the columnar member,
Moveable up and down relative to the member and horizontally
The lower steel in the elastic bearing is locked immovably.
Of the elastic layer by restricting the relative lateral movement of the upper and lower steel plates.
The elastic member is restrained so that the shear deformation does not always function, and
An annular gap is provided between the layer and the shear
The inner peripheral surface of the upper steel plate contacts the outer peripheral surface of the shear restraint wall
Or the upper surface 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 having a sliding surface provided on the upper steel plate, wherein the upper structure is set to be positioned at an intermediate portion of the upper steel plate. A sliding type elastic bearing device for a structure, characterized in that a bonding interface between a lower steel plate and a rubber layer is roughened to enlarge an adhesion surface and increase shear resistance of the elastic layer.