JP5714376B2 - Bearing device - Google Patents

Description

  The present invention relates to a support device for supporting various structures such as buildings and bridges.

  Originally, bearing devices for structures such as buildings and bridges are roughly divided into horizontal load support functions for supporting horizontal loads, vertical load support functions for supporting vertical loads, and rotational loads in the vertical plane. A vertical rotation support function and the like are required. Especially for bridge bearing devices, rubber bearing devices with rubber as the main component have been required since the 1995 Great Earthquake. Among them, a laminated rubber bearing device having a vertical load supporting performance and a high horizontal force dispersion performance has been widely used.

  This laminated rubber bearing device is configured, for example, as described in Patent Document 1, in which rubber plates and iron plates are alternately laminated, and these are bonded to each other by vulcanization bonding, and the upper part is a bridge girder of a bridge. The lower part is fixed to the lower structure such as a bridge pier and is used.

  However, since the laminated rubber bearing device adopts a laminated structure in terms of structure, the required thickness becomes inevitably large and bulky, and it is necessary to increase the area to support a high load. There is a disadvantage that the size is increased. Therefore, when the size of the support device is increased due to performance requirements, the area of the upper surface of the pier or abutment, which is a substructure, is required to be larger, and the cost of the entire bridge is increased. There is.

  In addition, when a large bearing device is required and it is not newly installed, the size of the bearing device is particularly problematic because the installation space is limited because the existing bearing device is installed. However, there is a problem that it cannot be replaced unless it is a small bearing device with a small area.

  In recent years, with the increase in the size of structures such as buildings and bridges and the anticipated increase in the scale of earthquakes, the functions and performance required for bearing devices have become more sophisticated. It is inevitable that the size will increase.

  From such a background, for example, as a function-separated fixed bearing described in Patent Document 2 as an improvement in the problem of the laminated rubber bearing device that is increased in size due to the improvement in vertical high load support performance as described above. An elastic bearing device has been proposed. This elastic bearing device aims to improve the vertical rotation performance and improve the horizontal load support performance while improving the problem of the laminated rubber bearing device that is increased in size due to the improvement of the vertical high load support performance as described above. It is an elastic bearing device.

Although this elastic bearing device does not have the horizontal force distribution function of the laminated rubber bearing device, it enhances the vertical load support function while maintaining the horizontal load support function. It is set as the structure which has the convex part and recessed part which consist of a plurality of concentric cylindrical parts to fit, and the cylindrical part located in the center. And in the diameter vertical cross-sectional view of the fitted state, these convex portions and concave portions that are fitted to each other have a rectangular cross section, and rubber or the like between the adjacent side surfaces and the bottom surface and the top surface facing each other. The uniform elastic body is filled substantially without a gap, and a continuous rubber layer is sandwiched and joined.

  In the elastic bearing device as described above configured as described above, the horizontal load support portion is configured by the side surfaces of the convex portions and the side surfaces of the concave portions adjacent to each other and the rubber layer therebetween, and the top surface of the convex portion. A vertical load support portion is constituted by the bottom surface of the recess and the rubber layer between them.

  Also, the bearing device described in Patent Document 3 adopts a multi-cylindrical configuration in which the upper collar and the lower collar are fitted to each other in the same manner as the elastic bearing apparatus of Patent Document 2, and each of the upper and lower collars The cylindrical part and columnar part constituting the convex part and the concave part are each formed in a trapezoidal cross section in which the distance between both side surfaces in the vertical cross-sectional shape narrows toward the top surface forming the end surface, and both side surfaces are inclined Thus, they are fitted to each other, and a uniform elastic body such as rubber is filled between these concave and convex portions with substantially no gap.

  According to such elastic bearing devices described in Patent Documents 2 and 3, the bearing device is reduced in size and weight, and the support performance of vertical load and horizontal load is improved.

JP 2002-181129 A JP 2005-337002 A JP 2009-46944 A

  According to the elastic bearing device described in Patent Documents 2 and 3 described above, the function-separated fixed bearing device can be used in the horizontal direction and without increasing the size of the bearing device by increasing the area or increasing the thickness. The load supporting performance in the vertical direction can be improved.

  However, for example, when the elastic bearing device is disposed between the bridge girder and the pier of the bridge and load transmission or load relaxation between them is performed, when an uplift force or the like acts on the bridge girder, There was a risk that the upper eaves and the lower eaves would be easily separated, and the elastic bearing device itself could be damaged or dropped. In addition, when a shear load due to an excessive horizontal force is applied to the elastic bearing device, the conventional elastic bearing device cannot grasp the presence or state of the damage by visual confirmation from the outside.

  The present invention has been made by the inventors' diligent research in view of the above-described circumstances, and can be made compact and can effectively support a large vertical downward load, and has a large horizontal load. In addition to restricting displacement while supporting, improving the follow-up performance in the vertical plane, and further resisting the vertically upward input, that is, enough to resist the lifting force, preventing damage to the bearing device itself and preventing falling bridges, and excessive When there is a correct input, it is possible to visually confirm the damage situation and necessity of replacement from the outside by predetermining a predetermined part ahead of others, and a movable bearing device as a fixed bearing device It is an object to provide a bearing device that can be applied as well.

The support device of the present invention includes a first rigid body provided with a convex portion, a second rigid body provided with a concave portion in which the convex portion is arranged and set, and between the first rigid body and the second rigid body. And an elastic body inserted in the support direction, wherein the convex portion has an outer surface facing the first rigid body side at a part of the surface thereof, and the concave portion the walls constituting the, possess an inner portion surface which is disposed opposite to the outer side surface of the convex portion with facing said second rigid side on a part of its surface, the surface of the vertically lower side of the convex portion Is inclined with respect to the support direction so as to narrow toward the lower side in the vertical direction .

  Further, when viewed in the bearing direction, the outer portion surface of the convex portion and the inner portion surface of the wall portion forming the concave portion overlap each other.

  Moreover, the said convex part comprises the cyclic | annular form in the said support direction view, It is characterized by the above-mentioned.

Further, the recess is have you in the bearing direction as viewed, is characterized in that an annular.

  Moreover, the said convex part has the said outer side surface over a part or all of the perimeter in the said support direction view, It is characterized by the above-mentioned.

  Moreover, the wall part which comprises the said recessed part has the said inner part surface over a part or all of the perimeter in the said support direction view, It is characterized by the above-mentioned.

The inner surface is inclined with respect to the bearing direction.

  Further, the outer side surface and the inner side surface are parallel to each other.

  Moreover, the said convex part has an inclined surface which faces the said 2nd rigid body side in a part of surface.

  Moreover, the wall part which comprises the said recessed part has an inclined surface which faces the said 1st rigid body side in a part of the surface.

  In addition, a plurality of the convex portions are provided.

Further, the support device of the present invention includes a first rigid body provided with a convex portion, a second rigid body provided with a concave portion in which the convex portion is disposed, the first rigid body and the second rigid body, An elastic body that is interposed between the protruding portions, and the convex portion has an outer portion surface facing the first rigid body side in a part of the surface thereof, The wall portion constituting the recess has an inner surface facing a part of the surface of the second rigid body and facing the outer surface of the convex portion, and the first rigid body and the first rigid body. Either or both of the two rigid bodies are configured to be splittable , and the split direction of either or both of the first rigid body and the second rigid body is the same direction as the support direction .

Further, the support device of the present invention includes a first rigid body provided with a convex portion, a second rigid body provided with a concave portion in which the convex portion is disposed, the first rigid body and the second rigid body, An elastic body that is interposed between the protruding portions, and the convex portion has an outer portion surface facing the first rigid body side in a part of the surface thereof, The wall portion constituting the concave portion has an inner portion surface that faces the second rigid body side on a part of the surface thereof and is disposed to face the outer portion surface of the convex portion, and the first rigid body is the first rigid body. When a force of a predetermined level or more is applied in a direction away from the two rigid bodies, it is damaged before the wall part constituting the convex part or the concave part, and a weak part in which a change due to the damage appears on the outside is provided. .

  The fragile portion may be a bolt / nut having a smaller shear area than the convex portion.

In addition, either or both of the first rigid body and the second rigid body are configured to be separable, and a bolt / nut that fastens the divided portions is the fragile portion. Furthermore, the fragile portion is a thin portion.

Further, the support device of the present invention includes a first rigid body provided with a convex portion, a second rigid body provided with a concave portion in which the convex portion is disposed, the first rigid body and the second rigid body, An elastic body that is interposed between the protruding portions, and the convex portion has an outer portion surface facing the first rigid body side in a part of the surface thereof, The wall portion constituting the concave portion has an inner portion surface facing the second rigid body side on a part of the surface thereof and facing the outer portion surface of the convex portion, and the first rigid body and the first rigid body have a space where the elastic member is not provided between the secondary rigid body, the space filler is characterized in that it is filled.

  The filler may be an elastic body different from the elastic body.

  Further, the filler is an incompressible fluid.

  Further, the filler is pre-filled before the convex portion and the concave portion are fitted.

  Further, the filler is filled after fitting the concave portion and the convex portion.

  Further, a sliding plate is disposed on the outer surface in the supporting direction of the first rigid body or the outer surface in the supporting direction of the second rigid body.

  Further, the first rigid body is set as an upper collar disposed in the upper structure, and the second rigid body is set as a lower collar disposed in the lower structure.

  Further, the second rigid body is set as an upper collar disposed in the upper structure, and the first rigid body is set as a lower collar disposed in the lower structure.

  The upper structure may be a bridge girder, and the lower structure may be a pier or an abutment.

  In this invention, the convex part provided in the 1st rigid body has the outer part surface which faces the said 1st rigid body side, and the wall part which comprises the recessed part provided in the 2nd rigid body is the said 2nd rigid body side The outer surface of the convex portion and the inner surface of the convex portion, and the outer surface of the convex portion and the inner surface of the wall portion constituting the concave portion in the bearing direction view. Therefore, when the first rigid body and the second rigid body are moved away from each other, the convex portion is caught on the wall portion constituting the concave portion, and the first rigid body and the second rigid body Can be prevented from deviating.

  Further, when either or both of the convex part and the concave part form an annular shape when viewed in the bearing direction, the elastic body is held in a substantially sealed state in the radially inner portion of the convex part or concave part forming the annular shape. It is possible to support a high load.

  Furthermore, when the convex part has an outer part surface that extends over part or all of the entire circumference in the bearing direction view, or when the concave part has an inner part surface that extends over part or all of the entire circumference in the support direction view. In the bearing direction view, the load can be evenly distributed, the vertical load support characteristic can be further enhanced, and the rotation follow-up performance can be improved.

  In addition, when either or both of the outer surface and the inner surface are inclined with respect to the support direction, the horizontal load can be supported on the outer surface and the inner surface, and the horizontal load support. The characteristics can also be improved.

  In addition, when the outer side surface and the inner side surface are parallel, the part of the elastic body disposed between the outer side surface and the inner side surface has a uniform thickness, and The vertical load can be supported evenly in the direction view.

  Further, when the convex part has an inclined surface facing the second rigid body side on a part of the surface, or the wall part constituting the concave part has an inclined surface facing the first rigid body side on a part of the surface. Can support a vertical load on the inclined surface.

  In addition, when either or both of the first rigid body and the second rigid body are configured to be separable, the convex portion and the concave portion can be easily fitted, and the convex portion and the concave portion are complicated. It is also possible to set a simple shape. The dividing direction at this time may be a bearing direction or a direction different from the bearing direction.

  In addition, when the first rigid body receives a force of a predetermined level or more in a direction away from the second rigid body, the brittle portion is damaged before the wall portion forming the convex portion or the concave portion, and changes due to the damage appear outside. When a large load is applied due to an earthquake or the like, it is possible to prevent the convex portions and the wall portions constituting the concave portions that cannot be visually observed from being damaged, and the visible fragile portions are damaged. Therefore, it is possible to easily grasp the damaged state of the support device. As this weak part, for example, a bolt / nut having a smaller shear area than the convex part can be used, and more specifically, either or both of the first rigid body and the second rigid body can be divided. In this case, a bolt / nut that fastens the divided parts can be used. Moreover, it is also possible to make a weak part into the thin part provided with respect to any one or both of a 1st rigid body and a 2nd rigid body.

  In addition, in the case where there is a space where no elastic body is provided between the first rigid body and the second rigid body, it is possible to enter the space when the elastic body is deformed by receiving a load. The allowable deformation amount of the body can be increased, and the spring constant can be reduced. That is, the spring constant can be adjusted by providing the space.

  Furthermore, the space can be filled with a filler. Various functions such as the spring constant and height of the bearing device, load support performance, load damping performance, rotation follow-up performance in the vertical plane, etc., depending on the setting of the constituent material, filling amount, filling position, filling space shape, etc. And the performance can be adjusted.

  As the filler, for example, an elastic body that is different from the elastic body inserted between the first rigid body and the second rigid body, or an incompressible fluid can be used. By selecting the type of filler, it is possible to adjust various functions and performance such as the spring constant and height of the bearing device, load support performance, load damping performance, and rotation follow-up performance in the vertical plane as described above. .

  When a fluid is used as the filler, for example, it may be a fluid at the time of filling, but may be solidified after an appropriate time has elapsed. Moreover, the kind of filler with which one space is filled may be one kind or plural kinds. For example, a two-component curable fluid may be filled in an appropriate amount and cured to form a solid so as to develop an appropriate elastic coefficient. Of course, the two components are mixed in advance and then filled. You can also. Moreover, as a filler, you may mix the solid, the granule, and gas in the inside of the fluid.

  The filler can be composed of one or more fluids selected from gas, liquid and gel. Gas is unsuitable for supporting high loads because of its high compression ratio, but it can act like an air spring when supporting relatively low loads, and is filled in a pressurized state. May be. It is also possible to form a filler such as a foam by curing while filling and placing a fluid containing bubbles such as discontinuous bubbles. In addition, for example, when filled with a liquid or slurry-like or gel-like non-hardening filler, it is possible to support the load while freely supporting deformation of the filling space, and it can be used at low temperatures such as in cold regions. It is also possible to select an antifreeze fluid that does not freeze.

  When the filler is an incompressible fluid, it is possible to support a high load while freely responding to deformation of the filling space.

  When the filler is a liquid or a slurry or gel-like non-curing and highly viscous fluid, the highly viscous filler in the space when the elastic body surrounding the filling space is deformed. The effect of attenuating deformation energy by the viscous resistance of can be expected.

  Further, as described above, the filler can be a different kind of elastic body. Of course, in order for the filler to become an elastic body, it is necessary to exhibit fluidity at the time of filling. For example, if the elastic body exhibits thermoplasticity, when it is used as a filler, the elastic body is appropriately heated to a temperature and filled while being allowed to flow. For example, if an elastic body shows thermosetting property, it will be filled when it is in a flowable state before curing.

  When the filling material is filled in advance, it can be filled in accordance with the pre-design and according to the procedure before the production stage or before shipment, and according to this, high efficiency in production can be achieved.

  In addition, when filling the filler later, it is possible to fill it after shipment, for example, at the construction site, while adjusting according to the size of the construction space, etc. The problem that fine adjustment on construction was difficult can be solved.

  In addition, when adjusting the thickness or height of the support device according to the filling amount of the filler, the thickness or height of the support device can be adjusted depending on the amount of filling material with respect to the filling space. It will be possible to adapt more precisely to the construction space at.

  Further, it is possible to fix the sliding means on the outer surface in the supporting direction of the first rigid body or the second rigid body, for example, the upper surface or the lower surface. When this sliding means is set, it was originally a fixed bearing. The bearing device of the present invention can be used as a movable bearing.

  Furthermore, it is possible to set the first rigid body as an upper collar disposed in the upper structure, and the second rigid body as a lower collar disposed in the lower structure. It is also possible to set the second rigid body as an upper collar disposed in the upper structure and the first rigid body as a lower collar disposed in the lower structure. In any case, it is possible to support the upper structure and the lower structure with excellent load supporting characteristics.

  The upper structure can be set as a bridge girder, and the lower structure can be set as a pier or abutment. In this case, the bridge girder and the pier or abutment can be supported with excellent load supporting characteristics.

It is sectional drawing which shows schematic structure of the support apparatus in 1st Example of this invention, (a) is plane sectional drawing, (b) BB 'sectional drawing, (b) is a vertical surface sectional drawing. It is AA 'sectional drawing of (a). The support according to an embodiment of the present invention, wherein the convex part has an inclined surface facing the upper collar side on a part of the surface, and the wall part constituting the concave part has an inclined surface facing the lower collar side on a part of the surface. It is sectional drawing of the modification of an apparatus. It is sectional drawing of the modification of the support apparatus in one Example of this invention provided with the several recessed part formed in the upper surface of a convex part, and the several convex part suspended from the ceiling of a recessed part. It is sectional drawing of the modification of the support apparatus in one Example of this invention provided with the single recessed part formed in the upper surface of a convex part, and the single convex part suspended from the ceiling of a recessed part. It is sectional drawing of the modification of the support apparatus in one Example of this invention which a rubber layer becomes thick toward outward from the center. It is sectional drawing of the modification of the support apparatus in one Example of this invention from which a rubber layer becomes thin toward the outward from the center. A modification of the bearing device in one embodiment of the present invention in which the cross-sectional shape of the convex portion is substantially T-shaped with the top portion enlarged, and the cross-sectional shape of the wall portion is substantially L-shaped or inverted L-shaped with the bottom enlarged. It is sectional drawing. It is sectional drawing of the modification of the support apparatus in one Example of this invention whose planar view shape of a lower collar, an upper collar, and a convex part is a rectangle. It is sectional drawing of the modification of the support apparatus in one Example of this invention in which the convex part and the recessed part were provided in cyclic | annular form, (a) is a plane sectional view, (b) DD 'sectional drawing, b) is a vertical cross-sectional view, and is a CC ′ cross-sectional view of (a). It is sectional drawing which shows schematic structure of the modification of the support apparatus in one Example of this invention which has the space which does not arrange | position a rubber layer between a lower collar and an upper collar. It is sectional drawing which shows schematic structure of the modification of the support apparatus in one Example of this invention which has a thin part which functions as a weak part in lower arm. It is sectional drawing which shows schematic structure of the modification of the support apparatus in one Example of this invention which has the thin part which functions as a weak part in an upper collar. It is sectional drawing of the modification of the support apparatus in one Example of this invention which has a slip board on the upper surface of an upper collar. It is sectional drawing of the modification of the support apparatus in one Example of this invention which has a sliding board in the lower surface of a lower collar.

  The configuration of the support device according to the embodiment of the present invention will be described in detail below. The bearing device of the present invention is a bearing device for supporting a structure such as a building or a bridge, and is disposed on one structure side of two structures positioned with a gap between them. A first rigid body, a second rigid body disposed on the other structure side opposite to the first rigid body, and an elastic body interposed between the first rigid body and the second rigid body And is configured. Here, for example, one of the above-described structures is an upper structure, and the other structure is a lower structure. As a more specific example, the support device of the present invention is used by being disposed between a bridge girder as an upper structure and a pier or abutment as a lower structure, that is, between a bridge girder and a pier or abutment. In this case, while supporting various loads such as horizontal load, vertical load, rotational load, etc., swing and vibration due to earthquake or wind, or dynamic or static traffic load, etc. It is supported while absorbing and dispersing stress. Hereinafter, an embodiment of the support device of the present invention will be described with an example in which it is used by being disposed between an upper structure and a lower structure.

  The support device includes at least a lower rod which is a first rigid body fixed directly or indirectly to the lower structure and an upper rod which is a second rigid body fixed directly or indirectly to the upper structure. And an elastic body disposed between the upper and lower eyelids. Of course, it is also possible to adopt a configuration in which the upper arm and the lower arm are interchanged.

  As for the fixing means of the lower arm to the lower structure, the lower arm may be directly fixed to the lower structure using fastening means such as bolts and nuts, or a plate shape having a larger area than the lower arm. The lower arm can be indirectly fixed to the lower structure via a lower fixing means such as a lower plate, or can be fixed by an appropriate method. Further, it is also preferable that sliding means is disposed in the lower part of the lower arm and the lower structure and the support device are fixed so as to be capable of relative displacement. As the sliding means, for example, a plate having a low coefficient of friction surface such as PTFE is fixed to the lower surface of the lower collar, or the upper surface on the attachment means side fixed to the lower structure or the lower structure. It is possible to constitute by fixing to. The direct or indirect fixing of the upper and lower rods is preferably a detachable method, and fastening with bolts, nuts, etc. is an example.

  The lower arm is preferably made of a steel material such as metal, ceramics, or a reinforced resin such as hard resin or FRP, but is not necessarily limited to a rigid material. It can be composed of a material composed of a combination of a material and an elastic material. The lower surface composed of various materials can be set to an appropriate shape such as a substantially polygonal shape, a substantially circular shape, a substantially oval diameter, or a substantially elliptical shape in plan view. Alternatively, it is advantageous in terms of construction and replacement. Of course, the planar shape of the lower eyelid does not necessarily match the upper eyelid, but the size of each part and the shape and position of the protrusions and recesses need to match the settings of the lower eyelid and the upper eyelid. There is. In addition, the lower arm can be constructed so that the outer surface is entirely covered with a coating layer such as an elastic body to obtain weather resistance and rust prevention effect.

  One or more protrusions projecting upward are provided on the upper surface side of the lower eyelid. In the case where two or more convex portions are provided, it is preferable that the convex portions are provided with a uniform interval, but the present invention is not limited to this. Of course, there may be no gap between the convex portions, and when the interval is set, a bottom portion is created in the concave portion created between the adjacent convex portions. The number of protrusions set is not particularly limited. For example, n is a natural number, the number of protrusions is 2n-1, and the number of protrusions is 2n-2. Set the number of protrusions on the upper eyelid and the lower eyelid, such as setting the convexity set on the upper eyelid to 2n, or changing the above upper eyelid and lower eyelid, etc. Or the same number of upper and lower ridges can be set, that is, odd and odd stripes, or even and even stripes. The degree of freedom in design that cannot be obtained by the combination of the convex portions is obtained, and a predetermined plane area can be effectively utilized to the maximum extent. Furthermore, the convex portions can be arranged in an annular shape when viewed from the bearing direction. When the convex portions are arranged in an annular shape, the convex portions may be arranged over the entire circumference, but the convex portions may be arranged only in a part of the entire circumference.

  In the support device of the present embodiment, the convex portion provided on the lower collar has an outer surface that faces the lower collar. Specifically, by setting the cross-sectional shape of the convex portion provided on the lower collar to, for example, a shape that gradually increases in width toward the upper end, for example, an inverted trapezoidal shape, a shape that expands in a curved shape, etc. It becomes a shape which has an outer part surface which inclines with respect to a bearing direction while facing the lower collar side. Further, by making the cross-sectional shape of the convex portion into a substantially T shape with the top portion having an enlarged diameter, the convex portion is directed to the lower collar side and has a shape having an outer portion surface orthogonal to the support direction.

  The upper surface of the convex portion may be a flat surface, a curved surface, an uneven surface or a rough surface, or a combination thereof. For example, when the upper surface of the convex portion is a flat surface, the design and manufacture are easy. In addition, when the upper surface of the convex portion is a curved surface, the spring constant of the elastic body can be set by setting the curved surface, so that the degree of freedom in design can be improved and the load resistance can be adjusted. It becomes possible. Moreover, by making the upper surface of the convex portion an uneven surface or a rough surface, it is possible to improve the peel resistance when an elastic body such as rubber is bonded to the lower arm.

  The side surface of the convex portion can be a flat surface or a curved surface, or can be an uneven surface, a rough surface, or a combination thereof. For example, when the side surface of the convex portion is a flat surface, the design and manufacture are easy. In addition, when the side surface is a curved surface, the contact area with an elastic body such as rubber contacting the side surface can be adjusted, and the dispersibility of the load can be changed depending on the portion on the side surface. Further, by making the side surface an uneven surface or a rough surface, it is possible to improve the peel resistance when an elastic body such as rubber is bonded to the upper eyelid.

  Of course, the upper surface of the lower arm can be flat, or provided with a concave portion that is recessed from the upper surface side and / or a convex portion that protrudes toward the opposite base, or a rough surface or a curved surface. It is possible to use a tapered surface or a composite surface thereof. In particular, an inclined surface that is set so that the thickness of the lower eyelid decreases from the approximate center of the upper surface of the lower eyelid outward, or the thickness of the lower eyelid increases from the approximate center outward. It can be set as an inclined surface.

  The upper hook fixing means for the upper structure may be directly fixed to the upper structure using fastening means such as bolts and nuts, or a plate shape having a larger area than the upper hook. The upper collar can be indirectly fixed to the upper structure via an upper fixing means such as an upper plate, or can be fixed by an appropriate method. Further, it is also preferable that sliding means is disposed on the upper part of the upper rod so that the upper structure and the support device can be fixed relative to each other. As the sliding means, for example, a plate having a low coefficient of friction surface such as PTFE is fixed to the upper surface of the upper collar, or the upper structure or the lower surface on the attachment means side fixed to the upper structure. It is possible to constitute by fixing to.

  The upper arm is preferably made of steel, such as metal, ceramics, or reinforced resin such as hard resin or FRP, but is not necessarily limited to rigid material. Elastic material, rigid material and elastic material It can comprise by the material comprised by a combination. The upper surface composed of various materials can be set to an appropriate shape such as a substantially polygonal shape, a substantially circular shape, a substantially oval diameter, or a substantially elliptical shape in plan view. Alternatively, it is advantageous in terms of construction and replacement. In addition, an upper surface can be comprised so that an outer surface may be entirely covered with coating layers, such as an elastic body, and a weather resistance and a rust prevention effect may be acquired.

  On the lower surface side of the upper collar, one or a plurality of walls that protrude downward and form a recess are provided. These wall parts form the recessed part by which the convex part of a lower collar is fitted. The recess can be provided in an annular shape when viewed from the support direction. When the concave portion is provided in an annular shape, the concave portion may be provided over the entire circumference, but the concave portion may be provided only in a part of the entire circumference. And in the support apparatus of this embodiment, the wall part provided in the upper collar has an inner part surface which faces the upper collar side. Specifically, for example, by setting the cross-sectional shape of the wall portion provided on the upper heel to a shape that gradually increases in width toward the lower end, the wall portion faces the lower heel side and is supported with respect to the support direction. It becomes the shape which has the inner part surface which inclines. Moreover, by making the cross-sectional shape of the wall portion into a substantially L shape or an inverted L shape with an expanded bottom portion, the wall portion is directed to the upper collar side and has an inner surface that is orthogonal to the support direction.

  The upper surface of the wall portion may be a flat surface, a curved surface, an uneven surface or a rough surface, or a combination thereof. For example, when the upper surface of the wall portion is a flat surface, the design and manufacture are easy. If the upper surface of the wall is a curved surface, the spring constant of the elastic body can be set by setting the curved surface, improving the degree of freedom in design and adjusting the load resistance. It becomes possible. Further, by making the upper surface of the wall part an uneven surface or a rough surface, it is possible to improve the peel resistance when an elastic body such as rubber is bonded to the lower arm.

  The side surface of the wall portion can be a flat surface or a curved surface, and can also be an uneven surface, a rough surface, or a combination thereof. For example, when the side surface of the wall portion is a flat surface, the design and manufacture are easy. In addition, when the side surface is a curved surface, the contact area with an elastic body such as rubber contacting the side surface can be adjusted, and the dispersibility of the load can be changed depending on the portion on the side surface. Further, by making the side surface an uneven surface or a rough surface, it is possible to improve the peel resistance when an elastic body such as rubber is bonded to the upper eyelid.

  Further, the lower surface of the upper collar can of course be a flat surface, or a concave portion provided from the lower surface side and / or a convex portion protruding toward the opposing lower eyelid, or a rough surface, It can be a curved surface, a tapered surface, or a composite surface thereof. In particular, an inclined surface is set so that the thickness of the upper collar decreases from the approximate center of the lower surface of the upper collar toward the outside, or the thickness of the upper collar increases from the approximate center toward the exterior. It can be set as an inclined surface. For example, while the lower surface of the upper collar is an inclined surface in which the thickness of the upper collar becomes thinner from the approximate center to the outside, the upper face of the lower collar is thinned from the approximate center to the outside. When the support device is configured in combination with a lower heel that is an inclined surface, an expanded space is created between the upper heel and the lower heel that is separated radially outward from the center. Therefore, when the elastic body is disposed so as to fill this space, it is possible to obtain a support device in which the elastic layer becomes thicker from the center toward the outside. On the contrary, while the lower surface of the upper collar is an inclined surface in which the thickness of the upper collar increases from the approximate center toward the outside, the upper surface of the lower collar is configured so that the thickness of the lower collar extends outward from the approximate center. When the support device is configured in combination with a thicker lower heel, a constricted space is created between the upper heel and the lower heel approaching radially outward from the center. Therefore, when the elastic body is disposed so as to fill this space, it is possible to obtain a support device in which the elastic layer becomes thinner from the center toward the outside.

  In order to prevent the upper heel from being lifted and to prevent the lower heel from separating from the upper heel, in the bearing device of the present invention, the outer portion surface of the convex portion and the wall constituting the concave portion in the bearing direction view. It has the part which the inner part surface of a part overlaps. For example, when arranging the outer part surface of the convex part and the inner part surface of the wall part constituting the concave part in parallel and close to each other as parallel planes, the outer part surface of the convex part faces the lower collar side, Since the inner side surface of the wall part constituting the recess faces the upper collar side, an area where the outer side surface of the convex part and the inner side surface of the wall part constituting the concave part overlap easily when viewed in the bearing direction is easily generated. It can be made.

  However, as described above, when there is a portion where the outer side surface of the convex portion and the inner side surface of the wall portion constituting the concave portion overlap when viewed in the bearing direction, when the bearing device is assembled, it is simply moved vertically. If an attempt is made to fit the convex portion and the concave portion by moving the upper and lower collars, the convex portion and the wall portion constituting the concave portion interfere with each other. For this reason, it is preferable that either or both of the upper and lower eyelids are configured to be separable. At this time, if necessary, the wall portion forming the convex portion and the concave portion may be configured to be split according to the upper eyelid or the lower eyelid. It should be noted that the upper hook and the lower hook may be divided in any direction as long as the upper hook convex portion and the lower hook concave portion can be fitted as prescribed, and may be a bearing direction or a direction different from the bearing direction. good.

  As described above, the convex portion provided on the lower collar has an outer side surface facing the lower collar side, and the wall portion constituting the concave portion provided on the upper collar has the inner side surface facing the upper collar side. The convex portion may have an inclined surface facing the upper collar side, and the wall portion constituting the concave portion may have an inclined surface facing the lower collar side. These inclined surfaces may be flat surfaces, but may be curved surfaces, uneven surfaces, or combinations thereof.

  The elastic body is disposed in a desired amount between the upper eyelid and the lower eyelid. The vertical load support performance, the horizontal load support performance, and the vertical rotation performance can be adjusted by this arrangement site and the arrangement amount. Of course, the load support performance and the rotation follow-up property can be set also by the material employed as the elastic body.

  Natural elastomer, synthetic rubber, thermoplastic elastomer and thermosetting elastomer can be used as the elastomer as the main constituent material of the elastic body. Among these, natural rubber is preferably used as a main component. Specific elastomer components include, for example, natural rubber (NR), polyisoprene rubber (IR), polybutadiene rubber (BR), styrene-butadiene rubber (SBR), chloroprene rubber (CR), ethylene-propylene rubber, butyl rubber ( IIR), halogenated butyl rubber (brominated, chlorinated, etc.), acrylic rubber, polyurethane, silicone rubber, fluorinated rubber, polysulfide rubber, hyperon, ethylene vinyl acetate rubber, epichlorohydrin rubber, ethylene-methyl acrylate copolymer, styrene series Elastomer, urethane elastomer, polyolefin elastomer, acrylonitrile-butadiene rubber (NBR), styrene-isoprene-styrene block copolymer (SIS), epoxidized natural rubber, trans-polyisoprene, norbornene Ring polymer (polynorbornene), styrene-butadiene rubber (SBR), high styrene resins, rubber alone such as isoprene rubber, or may be used in combination of two or more.

  Further, the elastic body may be filled between the lower heel and the upper heel, or the elastic body may be disposed so that a space where no elastic body is provided remains. And when the space in which the elastic body is not provided remains between the lower rod and the upper rod, the said space (henceforth a filling space) can be filled with a filler.

  The filler is filled in an appropriate amount in the space where the elastic body is set, which is set in an appropriate part between the upper and lower eyelids, that is, in the filling space, and the filling amount is the filling space. The volume may be smaller than, equal to, or larger than the volume, and in the case of a small amount, there is room for compression or deformation by the remaining gap, and the thickness of the support device is reduced. When set to the same amount, there is no remaining volume and the thickness of the bearing device can be realized as originally designed. When the amount is large, the volume of the filling space is increased from the original design value. The thickness of the support device can be set to be thick, and the thickness or height of the support device can be adjusted by the filling amount of the filler.

  The filler is preferably a fluid at least during filling. Of course, it may be a fluid after filling. Among the fillers that are fluids at the time of filling, for example, those that are fluids at the time of filling but solidify after an appropriate amount of time can be employed. Moreover, the kind of filler with which one space is filled may be one kind or plural kinds. For example, an appropriate amount of each of the two-component curable fluids may be filled and cured to form a single solid that exhibits an appropriate elastic modulus. Of course, the two components may be mixed and filled in advance. . In addition, as a filler, solid or particles are mixed in the fluid to improve the attenuation performance of the external input to the support device, or gas is mixed to improve or adjust the spring constant and elasticity. Also good.

  The filler can be composed of one or more fluids selected from gas, liquid, and gel. When gas is used as the main component of the filler, the gas is unsuitable for high load support because of its large compressibility, but when supporting a relatively low load, for example, an action like an air spring is performed. It is also possible to fill it in a pressurized state. It is also possible to form a filler such as a foam by curing while filling and placing a fluid containing bubbles such as discontinuous bubbles. In addition, for example, when a liquid or slurry-like or gel-like non-curable fluid is adopted as the main component of the filler, it is possible to support the load while freely supporting deformation of the filling space, It is also possible to select an antifreeze fluid that does not freeze even in low temperatures such as in cold regions.

  An incompressible fluid can be used as the filler, and when an incompressible fluid is used as the filler, a high load is supported while freely adapting to deformation of the filling space. It becomes possible.

  It is also possible to use a high-viscosity fluid as the filler. When a non-hardening high-viscosity filler such as liquid or slurry or gel is filled, the elastic body surrounding the filling space is deformed. In this case, it can be expected that the highly viscous filler in the space attenuates deformation energy by viscous resistance. Of course, when a highly viscous fluid with incompressibility is used, the effect obtained when an incompressible fluid is used as a filler and the effect obtained when a highly viscous fluid is used as a filler. Both effects can be obtained.

  Alternatively, as the filler, it is possible to employ an elastic body that is different from or the same type as the elastic body interposed between the upper and lower eyelids. Of course, in order for the filler to become an elastic body, it is necessary to exhibit fluidity at the time of filling. For example, if the elastic body exhibits thermoplasticity, when it is used as a filler, the elastic body is appropriately heated to a temperature and filled while being allowed to flow. Further, for example, if the elastic body exhibits thermosetting property, it is filled at the time when it is in a flowable state before being cured, and is cured under appropriate conditions.

  The filling of the filler may be performed in advance or may be performed after manufacture. In the case of filling the filler in advance, the filling of the filler is performed in accordance with the pre-design and the procedure according to the manufacturing stage and before the shipment, and according to this, the manufacturing efficiency can be improved. . In addition, when filling the filler later, it is also possible to fill the filler after the shipment, for example, at the construction site while adjusting to the size of the construction space, etc. According to the above, it is possible to solve the problem that fine adjustment in the conventional construction is difficult.

  It should be noted that there may be only one filling space or a plurality of filling spaces set between the upper and lower ridges, and it may be set to a narrow range or intermittently set to a wide area. However, it is possible to improve the ease of filling by arranging each filling space in series with a communication path.

  Furthermore, the support device according to the present embodiment includes a wall portion that forms a convex portion provided on the above-described lower collar and a concave portion provided on the upper collar when the lower collar receives a predetermined force or more in a direction away from the upper collar. It has a weakened portion that breaks out earlier, and changes due to the damage appear on the outside. Specifically, in the case where either or both of the lower collar and the upper collar are configured to be separable as described above, a bolt / nut that fastens these segmented parts can be used as the weak part. . Such a bolt / nut functions as a fragile part by reducing the shear area compared to the convex part and the wall part. In addition, it is also possible to use the thin part formed exposed to the outer area | region of a lower collar and an upper collar as a weak part. By providing such a fragile portion, when a large load is applied due to an earthquake or the like, damage appears on the outside that can be visually recognized, so it is possible to easily visually check the damage status of the support device. .

  Embodiments of the support device of the present invention will be described below with reference to the accompanying drawings. First, an embodiment of the bearing device of the present invention will be described with reference to FIG.

  1 is mounted between a bridge girder (not shown) and a pier (not shown) or an abutment (not shown) in a bridge, for example, and various loads such as a horizontal load, a vertical load, and a rotational load. It supports the bridge while absorbing and dispersing the vibration, vibration and stress caused by earthquake, wind, dynamic or static traffic load. FIG. 1A is a plan sectional view of the support device 1, and is a B-B ′ sectional view of FIG. Moreover, FIG.1 (b) is a vertical surface sectional drawing, and is A-A 'sectional drawing of Fig.1 (a).

  The support device 1 is configured by fitting a lower rod 2 and an upper rod 3 through a rubber layer 4 made of an elastic body, specifically rubber or the like so as to enable relative displacement in the vertical direction. ing. The lower surface of the lower arm 2 is fixed to, for example, a bridge pier as a lower structure via a lower plate 5 indicated by a two-dot chain line. The upper surface of the upper gutter 3 is fixed to, for example, a bridge girder as an upper structure via an upper plate 6 indicated by a two-dot chain line. Of course, the upper plate and the lower plate here are not indispensable. The upper plate and the upper plate are integrally formed, or the lower plate and the lower plate are formed integrally, so that the upper plate and the lower plate are formed. You may give the structure corresponding to each.

  The lower arm 2 can be made of any appropriate known material, and is composed of a substantially circular plate-like member in plan view, for example, composed of a known metal such as a steel plate, ceramics, plastic including reinforced plastic, etc. The lower plate 5 is fixed to the lower surface. On the upper surface of the lower collar 2, a single convex portion 8 is provided at the center as shown in FIG.

  The convex portion 8 has a trapezoidal shape in which the cross-sectional shape gradually increases in width toward the upper end, and as a whole, has a substantially inverted conical shape with the top portion cut. As a result of having such a shape, the convex part 8 is provided with a conical side-shaped outer part surface 8a directed to the lower eyelid 2 side.

  Appropriate known materials can be used for the upper collar 3, which is made of, for example, a known metal such as a steel plate, ceramics, plastic including reinforced plastic, or the like, and is formed from a substantially circular plate-like member in plan view as a whole. The upper plate 6 is fixed to the upper surface. As shown in FIG. 1 (b) in particular, a wall portion 9 disposed in an annular shape so as to surround the convex portion 8 is provided on the lower surface of the upper collar 3. 3 is formed with a concave portion 10 that fits with the convex portion 8.

  The wall part 9 which forms such a recessed part 10 has the inner part surface 9a which faces the upper collar 3 side, as shown in FIG.1 (b). The inner surface 9a is disposed opposite to the outer surface 8a of the convex portion 8, and is inclined parallel to the outer surface 8a and in the support direction.

  And in the bearing apparatus 1 of a present Example, seeing from the bearing direction (up-down direction in FIG.1 (b)), the convex part 8 and the wall part 9 so that the outer part surface 8a and the inner part surface 9a may overlap. And are arranged close to each other.

  Furthermore, as shown in FIG. 1B, the upper collar 3 of this embodiment can be divided in a direction different from the bearing direction. That is, the upper collar 3 has two substantially semicircular shapes that are arranged to face each other and are divided in a direction different from the support direction as cut in the support direction (vertical direction) along a diameter line passing through the center in plan view. It consists of divided bodies 3a and 3b. The two divided bodies 3a and 3b are fastened to each other by bolts / nuts 11 while the flange portions 3c protruding outward in the radial direction are brought into contact with the joint portions of the divided bodies 3a and 3b. Thus, the disk-shaped upper collar 3 is formed. In the present embodiment, the bolt / nut 11 is disposed at a location that is the first portion to be damaged when it is subjected to a large load on the support device 1 and is fragile and visible from the outside. ing.

  The rubber layer 4 can employ a known material such as natural rubber, and is inserted between the lower heel 2 and the upper heel 3, and is also filled between the convex portion 8 and the wall portion 9. ing.

  In such a support device 1 of the present embodiment, the convex portion 8 provided on the lower rod 2 has the outer surface 8a facing the lower rod 2 side, and constitutes the concave portion 10 provided on the upper rod 3. The wall portion 9 has an inner surface 9 a that faces the upper collar 3 and is disposed to face the outer surface 8 a of the convex portion 8. On the other hand, in the support device 1 of the present embodiment, the rubber layer 4 is interposed between the lower rod 2 and the upper rod 3, and the wall surface of the convex portion 8 and the wall surface of the wall portion 9 constituting the concave portion 10 are provided. The rubber layer 4 is disposed. As a result, in the region where the outer side surface 8a of the convex part 8 facing the lower collar 2 and the inner side surface 9a of the wall part 9 constituting the concave part 10 facing the upper collar 3 are present in the bearing direction view, There are a plurality of parts such as a part of the rubber layer 4 along the 8a and the inner side surface 9a and a part of an elastic body interposed between the lower collar 2 and the upper collar 3, and apparently the rubber layer A plurality of layers 4 are arranged. As described above, since a plurality of the rubber layers 4 are arranged in the bearing direction, the vertical load acts in a distributed manner, and the vertical load support characteristic is improved. Therefore, according to the support device 1 of the present embodiment, it is particularly excellent in the vertical load direction support characteristics, can sufficiently absorb and disperse the vibration following the vertically downward and vertically upward swing, and can follow the rotation in the vertical plane. And rotational force dispersion performance can be improved.

  Further, in the bearing device 1 of the present embodiment, since the outer side surface 8a of the convex part 8 and the inner side surface 9a of the wall part 9 constituting the concave part 10 overlap with each other in the bearing direction view, When the 2 and the upper collar 3 are moved away from each other, it is possible to prevent the convex portion 8 from being caught by the wall portion 9 constituting the concave portion 10 and the lower collar 2 and the upper collar 3 from being separated. That is, even if the lifting force is applied to the support device 1, it is possible to prevent a fallen bridge or the like due to the separation of the lower rod 2 and the upper rod 3.

  In the support device 1 of the present embodiment, the outer portion surface 8a of the convex portion 8 and the inner portion surface 9a of the wall portion 9 constituting the concave portion 10 are inclined with respect to the support direction. And while supporting the load in the horizontal direction on the inner side surface 9a, the relative displacement between the lower rod 2 and the upper rod 3 in the horizontal direction can be restricted, and the horizontal load support characteristic can also be improved.

  Further, in the support device 1 of the present embodiment, the outer portion surface 8a and the inner portion are formed because the outer portion surface 8a of the convex portion 8 and the inner portion surface 9a of the wall portion 9 constituting the concave portion 10 are parallel. The portion of the rubber layer 4 disposed between the surface 9a has a uniform thickness, and the vertical load can be evenly supported when viewed in the bearing direction.

  Further, in the support device 1 of the present embodiment, since the upper collar 3 is configured to be separable, the convex portion 8 and the concave portion 10 can be easily fitted.

  Further, in the support device 1 of the present embodiment, when the upper collar 3 receives a force of a predetermined level or more in a direction away from the lower collar 2, it breaks before the wall portion 9 constituting the convex portion 8 or the concave portion 10. In addition, a bolt / nut 11 that fastens the divided portions of the upper collar 3 is provided as a fragile portion in which a change due to damage appears on the outside. The bolt / nut 11 is set to have a smaller shear area than the convex portion 8 and breaks before the convex portion 8 or the like. For this reason, when a large load is applied due to an earthquake or the like, it is possible to prevent damage to the invisible convex portions and the wall portions constituting the concave portions, and the visible bolt / nut 11 is damaged. Therefore, it is possible to easily grasp the damaged state of the support device.

  In addition, the support apparatus by this invention is not limited to the above-mentioned embodiment, A various change is possible within the range which does not deviate from the main point of this invention. Several modifications will be described below with reference to the drawings.

  For example, as shown in the cross-sectional view of FIG. 2, the convex portion 8 has an inclined surface 8 b facing a part of the upper collar 3 on a part of the surface, and the wall portion 9 constituting the concave portion 10 is part of the surface. It can also comprise so that it may have the inclined surface 9b which faces the lower collar 2 side. By adopting such a configuration, a vertical load can be supported on the inclined surfaces 8b and 9b, and the vertical load support characteristic can be improved. Further, as shown in FIG. 3, a concave portion 8 c that narrows downward is provided on the upper surface of the convex portion 8, and a convex portion 10 a that hangs down from the ceiling of the concave portion 10 and narrows downward is provided. As a result, the area of the inclined surfaces 8b and 9b can be substantially increased, and the vertical load support characteristics can be further improved. In addition, although the recessed part 8c formed in the upper surface of the convex part 8 and the convex part 10a suspended from the ceiling of the recessed part 10 may be plural as shown in FIG. 3, it is single as shown in FIG. It may be.

  Further, as shown in the cross-sectional view of FIG. 5, the lower surface of the upper collar 3 is an inclined surface in which the thickness of the upper collar becomes thinner from the approximate center to the outside, and the upper surface of the lower collar 2 is set to the approximate center. It can also be set as the inclined surface where the thickness of the lower heel decreases from the outside toward the outside. An expanded space is created between the upper collar 3 and the lower collar 2 so as to be separated from the center radially outward, so that the rubber layer 4 can be thickened from the center outward. The rubber layer 4 has a larger amount of bending as it goes outward, and can improve the rotational performance in the vertical plane.

  Further, as shown in the cross-sectional view of FIG. 6, the lower surface of the upper collar 3 is an inclined surface in which the thickness of the upper collar 3 increases from the approximate center to the outer side, while the upper surface of the lower collar 2 is approximately An inclined surface in which the thickness of the lower collar 2 increases from the center toward the outside can also be used. Between the upper collar 3 and the lower collar 2, a constricted space is created that approaches from the center outward in the radial direction, so that the rubber layer 4 can be made thinner from the center outward. It becomes possible to improve the sealing property of the rubber layer 4. Therefore, in this case, a larger vertical downward load can be supported.

  Further, as shown in the cross-sectional view of FIG. 7, the cross-sectional shape of the convex portion 8 is set to a substantially T shape with the top portion having an enlarged diameter, and the cross-sectional shape of the wall portion 9 is substantially L-shaped with the bottom portion having an enlarged diameter or inverted In this case, the outer surface 8a and the inner surface 9a are orthogonal to the support direction.

  Further, as shown in the cross-sectional view of FIG. 8, the lower collar 2, the upper collar 3, and the convex portion 8 do not need to have a circular shape in plan view, and may be rectangular.

  Moreover, as shown in FIG. 9, it is also possible to adopt a configuration in which the convex portion 8 and the concave portion 10 are provided in an annular shape. In this case, a rubber is provided on the inner portion in the radial direction of the annular convex portion 8 or the concave portion 10. The layer 4 can be held in a substantially sealed state, and a higher load can be supported. The outer surface 8a of the convex portion 8 and the inner surface 9a of the wall portion 9 constituting the concave portion 10 do not necessarily have to be provided over the entire circumference, but the load can be evenly distributed by providing the entire circumference. It is possible to finely disperse and to further improve the vertical load support characteristics and the rotation following performance.

  Moreover, as shown in FIG. 10, the structure which forms the space 12 which does not arrange | position the rubber layer 4 between the lower collar 2 and the upper collar 3 is also employable. And the structure filled with a filler can also be employ | adopted by making this space 12 into a filling space. For example, when pressurized air is filled as the filler, the spring constant of the rubber layer 4 can be adjusted by the amount of pressurized air filled.

  As described above, the filler is not limited to pressurized air, but one or more fluids selected from gas, liquid, and gel, an incompressible fluid, a highly viscous fluid, and rubber An elastic body different from or the same kind as the layer 4 can be used, and an antifreeze fluid such as ethylene glycol can also be used.

  In addition, when filling the space 12 with a gas such as air or a fluid such as a filler, it is preferable to seal both ends of the space 12 in a sealed state, although not shown.

  Moreover, in the said Example, although the structure which the volt | bolt / nut 11 functions as a weak part was demonstrated, this invention is not restricted to this, For example, as shown in FIG. 13 may be provided so that the thin portion 13 functions as a fragile portion that is damaged first. In addition, you may provide the thin part 13 in the upper collar 3 as shown in FIG. In addition, when providing the thin part 13 with respect to the lower collar 2 and the upper collar 3 in this way, the thin section 13 is formed on the lower collar 2 and the upper collar 3 so that these thin parts 13 can be visually observed from the outside. It is preferable to provide it so as to reach the side surface.

  Furthermore, as shown in FIG. 13, in the support device 1 of the first embodiment, the sliding plate 14 can be fixed to the lower surface of the lower rod 2 as a sliding means. The existing support device 1 can be used as a movable support. The sliding plate 14 is made of, for example, PTFE.

  Moreover, as shown in FIG. 14, in the support apparatus 1 of the Example of this invention, the structure provided with the slip board 14 on the upper surface of the upper collar 3 is also employable. Of course, the setting of the sliding plate 14 is not limited to the support device 1 but can be set for a support device having a configuration that does not depart from the gist of the present invention.

  In the above description, the bridge support device has been described as the support device of the present invention. However, the present invention is not limited to the bridge support device, and is used for vibration control and seismic isolation of various structures. It can be employed as a device.

  It is also possible to turn the bearing device upside down and use the lower rod 2 as the upper rod and the upper rod 3 as the lower rod, or set the bearing direction to a horizontal direction or a direction shifted from the vertical direction. Is also possible.

  DESCRIPTION OF SYMBOLS 1 Support apparatus, 2 Lower rod, 3 Upper rod, 3a Divided body, 3b Divided body, 3c Flange part, 4 Rubber layer, 5 Lower plate, 6 Upper plate, 8 Convex part, 8a Outer part surface, 8b Inclined surface, 9 Wall part, 9a Inner part surface, 9b Inclined surface, 10 Recessed part, 11 Bolt / nut, 12 Space, 13 Thin part, 14 Sliding plate

Claims (25)

A first rigid body provided with a convex portion;
A second rigid body provided with a concave portion in which the convex portion is arranged and set;
A support device in which an elastic body interposed between the first rigid body and the second rigid body is disposed so as to overlap in a support direction,
The convex part has an outer part surface facing the first rigid body side in a part of the surface thereof,
Wall of the concave portion is, have a inner portion surface which is disposed opposite to the outer side surface of the convex portion with facing said second rigid side on a part of its surface,
The bearing device according to claim 1, wherein a surface of the convex portion on the lower side in the vertical direction is inclined with respect to the bearing direction so as to be narrowed toward a lower side in the vertical direction .   The bearing device according to claim 1, further comprising a portion where the outer portion surface of the convex portion and the inner portion surface of the concave portion overlap when viewed in the bearing direction.   The support device according to claim 1, wherein the convex portion has an annular shape when viewed in the support direction. It said recess is have you in the bearing direction viewed from bearing device according to any one of claims 1 to 3, characterized in that an annular.   The said convex part has the said outer part surface covering a part or all of the perimeter in the said bearing direction view, The bearing apparatus of Claim 3 characterized by the above-mentioned.   The bearing device according to claim 3, wherein the concave portion has the inner portion surface over a part or the whole of the entire circumference in the bearing direction view. The bearing device according to claim 1, wherein the inner surface is inclined with respect to the bearing direction.   The bearing device according to claim 1, wherein the outer side surface and the inner side surface are parallel to each other.   The bearing device according to claim 1, wherein the convex portion has an inclined surface facing a part of the second rigid body on a part of the surface thereof.   The supporting device according to any one of claims 1 to 9, wherein the wall portion constituting the concave portion has an inclined surface facing a part of the first rigid body on a part of the surface thereof.   The support device according to claim 1, comprising a plurality of the convex portions.   A first rigid body provided with a convex portion;
  A second rigid body provided with a concave portion in which the convex portion is arranged and set;
  A support device in which an elastic body interposed between the first rigid body and the second rigid body is disposed so as to overlap in a support direction,
  The convex part has an outer part surface facing the first rigid body side in a part of the surface thereof,
  The wall part constituting the concave part has an inner part surface facing the second rigid body side on a part of the surface thereof and opposed to the outer part surface of the convex part,
  Either or both of the first rigid body and the second rigid body are configured to be separable, and the split direction of either or both of the first rigid body and the second rigid body is the same direction as the bearing direction. A bearing device characterized by being.   A first rigid body provided with a convex portion;
  A second rigid body provided with a concave portion in which the convex portion is arranged and set;
  A support device in which an elastic body interposed between the first rigid body and the second rigid body is disposed so as to overlap in a support direction,
  The convex part has an outer part surface facing the first rigid body side in a part of the surface thereof,
  The wall part constituting the concave part has an inner part surface facing the second rigid body side on a part of the surface thereof and opposed to the outer part surface of the convex part,
  When the first rigid body receives a force of a predetermined level or more in a direction away from the second rigid body, the first rigid body is damaged before the convex portion or the concave portion, and includes a fragile portion in which a change due to the damage appears on the outside. Feature bearing device. The bearing device according to claim 13 , wherein the fragile portion is a bolt / nut having a smaller shear area than the convex portion. Claim 13 either or both of the first rigid member and said second rigid body is configured to be divided, a bolt / nut fastening the divided part with each other, characterized in that it is with the fragile portion Bearing device.   The bearing device according to claim 13, wherein the fragile portion is a thin portion.   A first rigid body provided with a convex portion;
  A second rigid body provided with a concave portion in which the convex portion is arranged and set;
  A support device in which an elastic body interposed between the first rigid body and the second rigid body is disposed so as to overlap in a support direction,
  The convex part has an outer part surface facing the first rigid body side in a part of the surface thereof,
  The wall part constituting the concave part has an inner part surface facing the second rigid body side on a part of the surface thereof and opposed to the outer part surface of the convex part,
  A bearing device having a space in which the elastic body is not provided between the first rigid body and the second rigid body, and the space is filled with a filler. The support device according to claim 17 , wherein the filler is an elastic body different from the elastic body. The bearing device according to claim 17 , wherein the filler is an incompressible fluid. The support device according to any one of claims 17 to 19 , wherein the filler is filled in advance before the convex portion and the concave portion are fitted to each other. The bearing device according to any one of claims 17 to 19 , wherein the filler is filled after fitting the concave portion and the convex portion. Bearing device according to any one of claims 1 to 21, characterized in that fixedly mounted SuriNamera means on the upper surface or the lower surface of the first rigid member or the second rigid member. Wherein the first rigid member is a shoe upper that is secured to the upper structure, according to any one of claims 1 to 22, wherein said second rigid member is below shoes to be fixed to the lower structure Bearing device. It said second rigid member is a shoe upper that is secured to the upper structure, according to any one of claims 1 to 22, wherein said first rigid member is below shoes to be fixed to the lower structure Bearing device. The support apparatus according to claim 23 or 24 , wherein the upper structure is a bridge girder and the lower structure is a pier or an abutment.

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