JP2000234308A - Supporting device for bridge with slide type elastic supporting device for structure and horizontal force and lift force elastic resistance device, and installing method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a function separating type supporting device for a bridge of a slide type elastic supporting device for supporting a load of a suitable upper structure for the bridge, etc., for new construction and a horizontal force and lift force elastic resistance device. SOLUTION: A lower supporting member 2 and an elastic supporting body 5 compose a slide type elastic supporting device 30 for supporting a load. So, lower and upper steel members 9, 10 of the supporting body 5 are fitted into a shear deformation restraining wall 4 without a horizontal movement. A level of an upper surface of the upper steel member 10 is provided higher than that of the restraining wall 4. An upper structure 22 is slidably supported through a slide-supporting member provided on an upper part of the upper steel member 10. A lower part of a horizontal force and lift force elastic resistance device 46 having steel members 50, 53 at a top and bottom of both end parts of an elastic layer 51 is fixed on an upper part of a lower structure 1. An end part of a main beam 47 and the horizontal force and lift force elastic resistance device 46 adjacent to each other are connected with a cross beam 49 provided on an upper part of the resistance device 46.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slide-type elastic bearing device for supporting a load of a superstructure suitable for a bridge, especially a new bridge, and a horizontal and upward lift provided independently of the device. The present invention relates to a function-separated type bridge bearing device in combination with an elastic resistance device, and an installation method thereof.

[0002]

2. Description of the Related Art In recent years, a type B distributed seismic isolation bearing structure using rubber bearings has been used. However, due to its design, construction, and high cost, a structure that separates functions at all times from an earthquake is desired. ing. Conventionally, as an elastic bearing device for supporting a load on an upper structure using an elastic bearing body such as rubber, a planarly closed annular shear deformation restraining wall is used, through a steel member or the like disposed inside the same. A seismic isolation bearing device is known which combines an elastic bearing device for supporting a load of an upper structure and a horizontal elastic bearing device which is configured to indirectly restrain shear deformation of rubber.

[0003] However, in the case of the above-mentioned conventional elastic bearing device for supporting a load, since an annular shear deformation restraint wall closed in a plane is used, rainwater and dust are contained in the annular shear deformation restraint wall. Impurities are likely to accumulate, so there is a possibility that impurities such as dust may accumulate between the inner surface of the annular shear deformation restraining wall and the sliding surface of a steel member or the like that slides on this or in the gap between the rubber layer. If impurities such as dust accumulate, the elasticity of rubber may not be able to be exerted, so that maintenance such as cleaning becomes complicated, and it is necessary to fix the annular wall by welding or the like. And the cost increases. Also, it has been difficult to install while reducing the load on an upper structure such as a girder using a horizontal elastic bearing device.

[0004]

SUMMARY OF THE INVENTION The present invention has been developed for the purpose of improving the above-mentioned problems.
The new superstructure which is always supported by the elastic bearing device so that the shear deformation bearing function is not always functioned, and can be slid at all times during and after the construction, and is relatively permanent and elastic. Can provide a relatively high bearing stress, and can provide an elastic bearing device for load support capable of simpler mechanical design, as well as rainwater and dust in the shear deformation restraint wall. Without accumulation of impurities, there is no danger that the rubber elasticity cannot be exerted, and maintenance such as cleaning is easy, the structure is simple and relatively small, and it is economical for supporting loads. An elastic bearing device can be provided, and when installing a horizontal elastic bearing device, it can be installed while reducing the load on the superstructure such as the girder. And to provide a structure material for sliding elastic support device and a horizontal force Ken'ue lifting elastic resistance unit bridges elastic bearing device equipped with and installation method thereof.

[0005]

In order to achieve the above-mentioned object, a bridge-type bearing device having a sliding elastic bearing device for a structure and a horizontal force / uplift elastic resistance device according to claim 1 is provided with an upper structure. In a bridge bearing device disposed between a structure and an understructure such as an abutment or a pier, a lower support member fixed to the understructure, and an upper steel member and a lower steel member via an elastic layer. A slide-type elastic bearing device for load bearing is constituted by the elastic bearing body integrally provided, and the lower steel member and the upper steel member face each other at an interval in the bridge axis direction above the lower support member. The upper steel member is relatively slidably mounted in the shear deformation restraining wall so as to be relatively slidable in the vertical direction. And At the same time, the upper surface of the upper steel member is provided at a higher level than the upper surface of the shear deformation restraining wall, and extends in the bridge axis direction via a slip bearing having a slip surface provided on the upper portion of the upper steel member. An upper structure such as a main girder, a plate girder or a box girder is always slidably supported in a lateral direction, and is located at a position laterally separated from the load-bearing slide-type elastic bearing device in a transverse direction intersecting with a bridge axis direction. The upper part of the lower structure has a laminated portion in which an elastic layer such as rubber and a steel plate are alternately laminated in the vertical direction in an intermediate portion, and has a steel member at both upper and lower ends integrally with the laminated portion. An upper structure such as a main girder, a plate girder, or a box girder extending in the bridge axis direction is provided on an upper portion of the horizontal force and upper lift elastic resistance device, where a lower portion of the lift elastic resistance device is placed and fixed. Is characterized by

According to a second aspect of the present invention, in a bridge support device disposed between an upper structure and a lower structure such as an abutment or a pier, a lower support member fixed to the lower structure and an elastic layer are provided. An elastic bearing body integrally having an upper steel member and a lower steel member through the same constitutes a slide type elastic bearing device for load bearing, and the lower steel member and the upper steel member are connected to the lower supporting member. The upper steel member is fitted to the shear deformation restraining wall having a flat arc-shaped inner surface provided so as to face each other at an interval in the bridge axis direction at the upper part of the bridge member so that the upper steel member is not movable on the shear deformation restraining wall. The upper steel member is provided so as to be relatively slidable in the vertical direction, and the upper surface of the upper steel member is provided at a higher level than the upper surface of the shear deformation restraint wall, and a slip provided on the upper steel member. An upper structure such as a main girder extending in the bridge axis direction is always slidably supported in the lateral direction via a slide bearing member having a slidable bearing member, and the load-bearing slide type elastic bearing device for transversely crossing the bridge axis direction. In the upper part of the lower structure at a position separated in the direction, a laminated portion in which an elastic layer such as rubber and a steel plate are alternately laminated in the vertical direction at an intermediate portion, and steel layers are integrally formed at both upper and lower ends. A lower part of a horizontal force and upper lift elastic resistance device having a member is placed and fixed, and a horizontal girder is provided on an upper portion of the horizontal force and upper lift elastic resistance device, and an end of a main girder adjacent to the horizontal girder. And the horizontal force and upward lift elastic resistance device are connected. According to the third aspect of the present invention, there is provided a bridge bearing device provided with a structure-type sliding elastic bearing device and a horizontal / uplift elastic resistance device, wherein the lower support member is fixed to the lower structure via a sponge layer.

According to a fourth aspect of the present invention, there is provided a method for installing a bridge support device, wherein the lower support fixed to the lower structure is used when installing the bridge support device disposed between the upper structure and the lower structure. A load and a sliding elastic bearing device for load bearing are constituted by a member and an elastic bearing body integrally having an upper steel member and a lower steel member via an elastic layer, and the lower steel member and the upper steel member are constituted. Is fixed to a shear deformation restraint wall having a flat arc-shaped inner surface provided at an upper portion of the lower support member so as to face at a distance in a bridge axis direction and non-laterally movable, and the shear deformation restraint is provided. The upper steel member is provided on the wall so as to be relatively slidable in the vertical direction, and the upper surface of the upper steel member is disposed at a higher level than the upper surface of the shear deformation restraining wall. On the upper part of the lower structure at a position apart from the sliding elastic bearing device in the lateral direction intersecting with the bridge axis direction, a laminated portion in which an elastic layer such as rubber and a steel plate are alternately laminated in the vertical direction in the middle part. A horizontal force / uplift elastic resistance device having steel members at both upper and lower ends is mounted and fixed integrally therewith, and then a slide-type elastic bearing device for load support and the horizontal force / uplift elastic resistance device are provided. An upper structure such as a main girder, a plate girder, or a box girder extending in the bridge axis direction is constructed on an upper portion of the apparatus.

According to a fifth aspect of the present invention, there is provided a method for installing a bridge support device, wherein the lower support member fixed to the lower structure when the bridge support device disposed between the upper structure and the lower structure is installed. And an elastic bearing body integrally having an upper steel member and a lower steel member via an elastic layer, constitutes a slide type elastic bearing device for load bearing, and wherein the lower steel member and the upper steel member are A shear deformation constraint wall having a flat arc-shaped inner surface provided at an upper portion of the lower support member and opposed to each other at intervals in a bridge axis direction and non-movable laterally; The upper steel member is provided so as to be relatively slidable in the vertical direction, and the upper surface of the upper steel member is disposed at a higher level than the upper surface of the shear deformation restraining wall. A main girder extending in the bridge axis direction is placed on the upper part of the sliding elastic bearing device, and then the lower structure at a position transversely intersecting with the bridge axis direction from the load bearing sliding elastic bearing device is mounted on the main girder. In the upper part, a horizontal force / uplift elastic resistance device having a laminated portion in which an elastic layer such as rubber and a steel plate are alternately laminated in the vertical direction in an intermediate portion, and having steel members at both upper and lower ends integrally therewith. The horizontal girder extending between the ends of the main girder extending in the direction of the bridge axis and the horizontal girder connecting the upper lifting elastic resistance device are fixed on the horizontal force and upper lifting elastic resistance device. It is characterized by building.

According to a sixth aspect of the present invention, in the method of installing a bridge support device, the lower support member fixed to the lower structure when the bridge support device disposed between the upper structure and the lower structure is installed. And an elastic bearing body integrally having an upper steel member and a lower steel member via an elastic layer, constitutes a slide type elastic bearing device for load bearing, and wherein the lower steel member and the upper steel member are It is non-movably fitted to a shear deformation restraining wall having an arcuate inner surface provided so as to face at a distance in the bridge axis direction provided on the upper portion of the lower support member, and to the shear deformation restraining wall. The upper steel member is provided so as to be relatively slidable in the vertical direction, and the upper surface of the upper steel member is disposed at a higher level than the upper surface of the shear deformation restraint wall,
A sponge layer is interposed between the load-bearing slide-type elastic bearing device and the upper part of the lower structure at a position laterally intersecting with the bridge axis direction, and an elastic layer such as rubber and a steel plate are provided at an intermediate portion. And a horizontal force / uplift elastic resistance device having steel members at both upper and lower ends integrally mounted thereon, and the sponge layer is used to carry the horizontal force / uplift. A lifting elastic resistance device is supported and temporarily tightened and fixed, and then an upper structure such as a main girder, a plate girder, or a box girder extending in the bridge axis direction is built on the horizontal force and upper lifting elastic resistance device. Then, the final tightening and fixing are performed while lowering the level of the lower part of the horizontal force / uplift elastic resistance device so as to crush the sponge layer.

According to a seventh aspect of the present invention, there is provided a method for installing a bridge support device, the lower support member being fixed to the lower structure when the bridge support device disposed between the upper structure and the lower structure is installed. And an elastic bearing body integrally having an upper steel member and a lower steel member via an elastic layer, constitutes a slide type elastic bearing device for load bearing, and wherein the lower steel member and the upper steel member are It is non-movably fitted to a shear deformation restraining wall having an arcuate inner surface provided so as to face at a distance in the bridge axis direction provided on the upper portion of the lower support member, and to the shear deformation restraining wall. The upper steel member is provided so as to be relatively slidable in the vertical direction, and the upper surface of the upper steel member is disposed at a higher level than the upper surface of the shear deformation restraint wall,
A main girder extending in the bridge axis direction is placed on the upper part of the load-bearing slide elastic bearing device, and then the main girder is laterally separated from the load-bearing slide elastic bearing device in a transverse direction intersecting with the bridge shaft direction. In the upper part of the lower structure, a sponge layer is interposed, and in the middle part, an elastic layer such as rubber and a steel plate are alternately laminated in the vertical direction and a laminated part is integrally formed with steel at the upper and lower ends. A horizontal force / uplift elastic resistance device having a member is placed, the horizontal force / uplift elastic resistance device is supported by the sponge layer, and temporarily fixed and fixed. At the top, a horizontal girder is connected between the ends of the main girder extending in the bridge axis direction and connecting the horizontal force and lift elastic resistance device, and then the horizontal force and lift elastic resistance device is crushed so as to crush the sponge layer. The lower level of Characterized by the clamping fixing while lowering and.

According to the present invention, since the elastic body in the sliding type elastic bearing device for a structure does not always function as a shearing deformation, fatigue caused by repetition of relatively large shearing deformation caused by the lateral displacement of the elastic body is reduced. Does not occur. In addition, while the function of supporting the load of the upper structure and the function of supporting the bending (rotation) of the upper structure such as a girder are functioning, the upper structure can always be slidably supported. Of course, even if seismic force acts during construction, the sliding type elastic bearing device can support the upper structure without exerting excessive lateral supporting force, and it does not undergo shear deformation, so compare rubber The elastic body can be downsized because it can be used under very high bearing stress, and the elastic layer of the load-bearing member is laterally moved by the shear constraint wall indirectly through hard members such as steel. Therefore, the shear deformation of the elastic layer can be surely restrained without an unreasonable lateral external force directly acting on the elastic layer. In addition, the elastic bearing can function as a high bearing elastic bearing, and a force for shearing the elastic layer acts on the upper and lower portions of the elastic layer. The stress is applied to the upper and lower sides of the rubber layer. The upper and lower rubber layers and the bonding surface of the rubber layer are not shear-destructed, because the reaction force walls of the upper and lower fitting support members mechanically restrain the shearing force of the bonding surface. The stress concentration on a part of the outer peripheral edge of the bonding interface is alleviated. 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, when at least one or more reinforcing steel sheets are embedded in the rubber layer, even when a high bearing pressure is applied, the internal stress is widely distributed in the rubber layer, and excessive local distortion of the rubber layer can be suppressed. . Further, when a steel member or a reinforcing steel plate in contact with the rubber layer or an upper fitting support member and a lower fitting support member have a rough adhesive interface with the rubber layer,
Since the bonding surface can be enlarged and the shear resistance of the rubber layer can be increased, the integral bonding strength can be improved, and the shear resistance and the peel resistance against a high bearing pressure can be increased.

[0012]

1 and 2 show a first embodiment of the present invention.
1 shows a state in which an elastic bearing device A for a bridge according to an embodiment is being installed. The elastic bearing device A for a bridge includes an upper structure 22 such as a bridge girder and a lower portion such as a pier or an abutment. It is arranged between the structures 1 and comprises a sliding elastic bearing device 30 for loading the upper structure and a horizontal force / uplift elastic resistance device 46, on the upper surface of the lower structure 1 such as a pier, in the bridge axis direction. A pair of front and rear load-bearing slide-type elastic bearing devices 30 are arranged at an interval in the (front-back direction), and the pair of front and rear load-bearing slide-type elastic bearing devices 30 are spaced apart in a direction intersecting with the bridge shaft. A plurality of main girder 47 made of concrete or the like extending in the direction of the bridge axis on the front side is provided on the upper part of the slide type elastic bearing device 30 for load bearing on each of the front sides. The rear end is placed, and each of the rear Main girder 4 of the upper portion of the sliding elastic support device 30 for load support extending in the bridge axis direction of the rear side
7, a sponge layer 61 is interposed on the upper surface of the lower structure 1 between the main girders 47 adjacent to each other in the direction perpendicular to the bridge axis on the upper surface of the lower structure 22 to provide horizontal force and lifting force. An elastic resistance member 46 is placed, and an upper portion of the anchor bolt 55 embedded and fixed in the lower structure 1 is inserted into a through hole 56 of the lower steel plate 53 in the horizontal force / uplift elastic resistance member 46, and its anchor is inserted. It is loosely temporarily fixed and fixed by a nut 57 screwed into a screw portion above the bolt 55 (the state of FIG. 1). Next, as shown in FIG. 2, the rear ends of the main girder 47 on each front side extending in the bridge axis direction and the front end of each main girder 47 on the rear side are integrally buried and fixed, and A horizontal beam 49 made of reinforced concrete is provided so as to embed an anchor bolt 55 on the upper part of the horizontal force / uplift elastic resistance member 46 so as to extend in the longitudinal direction of the lower structure 1 such as the lower structure 1. The rear end of the main girder 47, the front end of the main girder 47 on each rear side, and the upper portion of the horizontal force / uplift elastic resistance member 46 are integrally connected, and the nut 57 is tightened to provide horizontal force / uplift. The elastic resistance member 46 is firmly fixed to the lower structure 1, and the sponge layer 61 is in a crushed state.

Next, the slide type elastic bearing device 30 for supporting a load will be described. The slide type elastic bearing device 3
0 is provided with a lower support member 2 made of steel as shown in FIGS. 11 to 15. The upper portion of a support portion 3 projecting upward from the upper surface of the lower structure 1 made of concrete is provided with a steel lower support member 2. The lower support member 2 is placed, and the upper end of the anchor bolt 15 is welded or screwed to the lower surface of the base plate 32 of the lower support member 2, and the anchor bolt 15 is embedded and fixed in the lower structure 1. Each plane arc-shaped inner wall surface 4c of the front shear deformation restraint wall 4a and the rear shear deformation restraint wall 4b is spaced apart on both sides of the upper surface of the base plate 32 in the bridge axis direction (front-back direction).
Are arranged so as to face each other, and the lower portions of the respective shear deformation constraint walls 4a and 4b are fixed to the base plate 32 by welding or the like. The shear deformation restraint wall 4 is constituted by the front shear deformation restraint wall 4a and the rear shear deformation restraint wall 4b.

A lower steel member 9 consisting of a flat circular lower fitting support member 36 so as to approach or come into contact with the arc-shaped inner wall surface 4c inside the shear deformation restraining wall 4 and a substantially circular flat circular member. An elastic body (layer) 6 which is interposed between the upper steel member 10 composed of the upper fitting support member 35 and the steel members 9 and 10 and is integrally fixed thereto with an adhesive, baking or integral molding. Elastic bearing body 5 provided
The upper and lower ends of the rubber-like elastic body (layer) 6 in the elastic bearing member 5 are restrained by the relative lateral movement of the lower steel member 9 and the upper steel member 10. The shear deformation of the elastic body (layer) 6 due to the relative lateral displacement of the portion is indirectly restricted. Therefore, the elastic bearing member 5 is prevented from laterally moving in the direction perpendicular to the bridge axis, in the bridge axis direction, and the like, and the upper steel member 10 is provided movably in the vertical direction with respect to the shear deformation restraining wall 4. Have been. The planar shape of each arc-shaped inner wall surface 4c of the shear deformation constraining wall 4 is set so that the center is disposed on the same circular locus and is substantially the same as or similar to the upper steel member, It is made circular. On the inner wall surface 4c of the shear deformation constraining wall 4, a low friction sliding bearing surface 39 made of a Teflon layer, an ethylene tetrafluoride plate or a layer is formed. Reference numeral 73 denotes a deformation allowable space for allowing the elastic body (layer) 6 to deform.

As shown in FIGS. 9 and 10, the elastic bearing member 5 has an upward opening groove 9a having a substantially trapezoidal cross section on its upper surface.
Steel member 9 comprising a lower fitting support member 36 having
And an upper steel member 10 comprising an upper fitting support member 35 having a downward opening groove 10a with a trapezoidal cross section on the lower surface, and an elastic layer (e.g., rubber or the like) integrally bonded to these grooves by an adhesive or an integral molding or the like. Body 6). A circular fitting concave portion 44 is provided on the upper surface of the upper steel member 10, and the sliding support member 1 such as an ethylene tetrafluoride plate or a tetrafluoroethylene layer is formed in the fitting concave portion 44.
3 is fixed and fixed by an adhesive or the like, or a slip bearing member 13 such as a stainless steel plate is fixed to the upper surface of the upper steel member 10 by a screw or the like. An annular concave portion 33 is formed on the outer peripheral surface of the elastic layer (body) 6 by R processing or the like, so that concentration of stress on the outer peripheral edge of the rubber layer and the like is further reduced. I have.

The lower steel member 9 in the elastic bearing 5
Over the entire circular surface of the upper surface of the and the lower surface of the upper steel member 10,
An uneven adhesive surface 40 is formed by an annular corrugated roll or knurling process, so that an adhesive interface between each steel member 9, 10 and the elastic layer 6 is formed as an uneven adhesive surface 40 by an annular corrugated or knurling process. As a result, compared to the flat adhesive surface, it is possible to more effectively prevent peeling due to shear force applied to the adhesive layer between the elastic layer 6 and each of the steel members 9 and 10 when the elastic layer 6 is compressed and deformed. .

Further, an outer surface of the upper steel member 10 is disposed on the inner upper portion of the steel shearing restraint wall 4 so as to approach or contact with the steel shearing restraining wall 4. The upper steel member 10 is set so as to be located at an intermediate portion of the plate thickness (in the illustrated case, approximately at the level of the central portion of the plate thickness). As described above, the lower support member 2 is fixed to the lower structure 1 via the bolts 15 such as anchor bolts embedded and fixed in the lower structure 1 made of concrete or the like.

As described above, if the non-metallic Teflon layer or other slip bearing member 39 is provided, a gap is not required between the inner surface of the shear restraint wall 4 and the outer surface of the upper steel member 10. Even if the upper steel member 10 slightly tilts (rotates) due to the bending of the upper structure, it can be supported while absorbing the tilt.

The thickness of the upper steel member 10 is such that the upper surface of the steel shear restraint wall 4 is at a level substantially at the center of the thickness of the upper steel member 10 in a state where the load of the upper structure is supported. It is good to set so that it is located in. The upper steel member 1
If the peripheral edge of 0 is an arc portion, that is, an arc-shaped outer surface portion in consideration of the rotation due to the bending of the upper structure (main girder) 22, the rotation follows the rotation of the upper structure (girder) 22 smoothly. be able to.

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 moves directly in the horizontal direction to the steel shear restraint wall 4. The elastic member (layer) 6 of the elastic bearing member 5 is locked so as not to be deformed by shearing, and is fixed to the upper structure 22 side by the anchor bolt 8 so as to be fixed to the upper or lower structure 22 side. On the lower surface of the sole plate 38, a circular or rectangular sliding support member 67 such as an ethylene tetrafluoride plate or an ethylene tetrafluoride layer or a stainless steel plate is fixed, so that the upper structure 22 is made of the sole plate 38 and the upper steel. It is supported on the elastic support body 5 via a member 10 and the like. In the case of this embodiment, since the rubber layer is not subjected to shear deformation as described above, the elastic bearing 5 acts as the high bearing elastic bearing 31 as an elastic supporting member having a relatively high bearing stress on the rubber layer. be able to.

In the high bearing elastic bearing body 31, 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. A hard plate 34 such as a reinforcing steel plate is embedded. As shown, a circular hole may be provided in the center of the hard plate 34, or a hard plate 34 having no through hole may be used. An upper fitting support member 35 and a lower fitting support member 36 having a cup-shaped cross section having annular reaction walls 35a and 36a on the outer periphery are fitted on the upper and lower portions of the elastic layer 6, respectively. The contact portions between the inner surfaces of the upper steel member 10 and the lower steel member 9 formed by the upper and lower fitting support members 35 and 36 and the upper and lower surfaces of the elastic layer 6 are adhesive surfaces 37, and are elastic. The upper and lower portions of the layer 6 are fitted inside the reaction walls 35a and 36a (pot portion). An uneven corrugated roll or knurling process or the like is applied to the entire lower surface of the upper fitting support member 35 and the upper surface of the lower fitting support member 36 of the high bearing elastic support body 31 and the upper and lower 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. By doing so, it is possible to more effectively prevent peeling due to shearing force applied to the bonding surface between the elastic layer 6 and the steel members 9 and 10 when the elastic layer 6 is compressed and deformed as compared with the flat bonding surface. .
In the embodiment shown in the drawings, a through hole is provided at the center of the hard plate 34 made of a reinforcing steel plate, so that the upper and lower rubber layers of the hard plate 34 are integrated.

In the high bearing elastic bearing body 31, the arrow P (shown in FIG. 10), for example, 200 kg / c
When a high load, such as m ² to 250 kg / cm ² , acts on the elastic layer 6, a shear force acts in the direction of the arrow P ₁ , and the shear force is applied to the elastic layer 6 and the upper and lower fitting support members 3.
5 and 36 acts as a peeling force on the adhesive surface 37 between the upper steel member 10 and the lower steel member 9.
5a and 36a mechanically restrain the shearing force acting on the bonding surface 37 of the elastic layer 6, do not apply the shearing force to the upper and lower portions of the elastic layer 6, and concentrate the stress on a part of the elastic layer. The upper fitting support member 35, the lower fitting support member 36, and the hard plate 3
Since the bonding interface with the elastic layer 6 in 4 is an uneven bonding surface 40 formed by an annular corrugation or knurling, the structure is designed to 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 concave portion 33 formed by the R processing of the elastic layer 6 causes 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 slide type elastic bearing device for supporting a load of a structure according to the above-described embodiment, the disadvantage of the bearing load supporting member 68 having the structure shown as a comparative example shown in FIG. 20 is solved. That is, in the bearing load supporting member 68 having a structure shown as a comparative example shown in FIG. 20, 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 A shear force acts on the adhesive surface 65 between the upper and lower support plates 63 and 64, and acts to separate the adhesive surface. Therefore, the thickness of the support member including the single elastic layer 6 having the above structure is thin. On the other hand, in the case of a flat bonding interface, the bearing stress is limited to about 120 kg / cm ² , for example, the bearing stress is 200 kg / cm.
^Although it is not possible to support a high load of ² to 250 kg / cm ^2, there is no such a problem in the embodiment as described above.

More specifically, as shown in FIGS. 11 and 12, in the sliding elastic bearing device 30 having the high bearing elastic bearing member 31 as one of the main components, the high bearing elastic bearing member 31 is vertically fitted. The support members 35, 36 are adjacent to the shear deformation restraint wall 4, and furthermore, the upper fitting support member 35 fitted on the upper portion of the elastic layer 6 of the high bearing elastic support body 31.
The top surface 4d of the shear deformation restriction wall 4 than the height H ₁ of the upper surface
Is provided at a lower position. Therefore, the circular or rectangular steel sole plate 38 attached to the lower surface of the upper structure is fitted to the upper fitting support member 3 of the high bearing elastic bearing 31 at a position higher than the top surface 4d of the shear restraint wall 4.
5 can be slidably and elastically supported by the slide bearing 13 on the upper surface.

In addition, as described above, the upper fitting support member 3
Since the lower part of 5 is lower (lower level) than the top surface 4 d of the shear restraint wall 4, the elastic layer 6 of the high bearing elastic support 31 and the upper fitting support member 35 are separated by the shear deformation restraint wall 4. It is supported by shear deformation constraint. Further, the sole plate 38 attached to the upper structure is slidably supported by the slide bearing 13 on the upper surface of the upper fitting support member 35 of the high bearing elastic bearing 31, as described above.
The elastic layer 6 of the high bearing elastic bearing body 31 is not subjected to shear deformation,
It is a so-called forced slide type support form. Moreover, in the high bearing elastic bearing body 31 of the above-described embodiment, the bonding interface between the hard plate 34 such as a reinforcing steel plate and the elastic layer 6 and the bonding interface between the upper and lower fitting support members 35 and 36 and the elastic layer 6 are upper-fitted. The entire inner lower surface of the attachment support member 35 and the lower attachment support member 3
An uneven adhesive surface 40 is formed by forming an uneven portion by annular corrugation or knurling on the entire inner upper surface of 6 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 34 when the elastic layer 6 is compressed and deformed is more effective than the flat adhesive surface. Can be stopped.

When the load bearing elastic bearing device 30 of the above embodiment used in the present invention is implemented, when the rubber layer is thin, a hard plate may not be embedded, but the rubber layer (or elastic layer) may be used. As a hard plate such as a reinforcing steel plate to be embedded in 6, at least one or more steel plates having a plate thickness of 1 mm or more may be embedded, and if necessary, a plurality of steel plates may be embedded. Also, in the case of the above embodiment, it can be used for high bearing pressure. However, when used for higher bearing pressure, the thickness of a hard plate such as a reinforcing steel plate embedded in the rubber layer (or elastic layer) 6 is reduced. For example, it may be appropriately selected from 1 to 100 mm or the like, and may be used by burying a plurality of them as necessary. By providing the uneven adhesive surface 40 by annular corrugation or knurling on the front and back surfaces of a hard plate such as a reinforced steel plate, the integrated area is further increased by increasing the adhesive area, and the peel resistance and shear deformation are increased. Resistance can be increased. If the bonding interface between the lower steel member 9, the upper steel member 10, the upper fitting support member 35, and the lower fitting support member 36 and the rubber layer 6 in each of the above embodiments is roughened or unevenly engaged, Compared to a flat bonding interface, the increased bonding area due to uneven engagement or roughened surface further enhances the integral bonding, thereby increasing the peeling resistance and the shear deformation resistance, and further increasing the high bearing pressure Can be used at any time.

The high bearing elastic bearing body 31 according to the above embodiment.
The upper fitting support member 35 is provided with a fitting recess 44 for a low friction sliding plate 43 made of a Teflon plate, and the surfaces of the upper and lower fitting support members 35 and 36 including the fitting recess 44 are provided. The entire surface surrounding the surface exposed to the outside of the intermediate elastic layer 6 may be covered with a thin rubber coating layer.
When completely covered with the rubber coating layer in this manner, deterioration due to rust or the like is prevented, and durability is improved.

Next, the above-described horizontal force / uplift elastic resistance device 46 used in the present invention will be described with reference to FIGS. The lower part of the anchor rod or the anchor bolt 54 is fixed to the upper part of the upper steel member 50 by welding or screwing, and the lower steel member 5
3 is provided with a through hole 56, and an elastic layer 51 of rubber or the like is integrally connected between the upper steel member 50 and the lower steel member 53 by an adhesive, baking, or integral molding. To form a horizontal force / uplift elastic resistance device 46, and the elastic layer (rubber layer) 51 is formed by alternately laminating the rubber layer and the steel plate 52 in the vertical direction so as to embed the steel plate 52, and integrated. A laminated portion is provided so as to allow a relatively large displacement in the horizontal direction, and a sponge layer 6 is formed on the lower surface of the lower steel member 53 in advance.
1 is fixed by an adhesive or the like, or when the horizontal force / lifting elastic bearing resistance device 46 (elastic bearing device) is installed on the lower structure 1, the sponge layer 61 is interposed. Horizontal force and lifting force elastic bearing resistance device 4
6 (elastic bearing device) is mounted on the lower structure 1 (see FIG. 5), and each anchor bolt is inserted into the lower steel member 52 above the anchor bolt 55 embedded and fixed in the lower structure 1 in advance. After the through hole 56 is inserted, the horizontal force / lift force elastic bearing resistance device 4
6. Temporarily tighten and fix 6 loosely without tightening.

In this case, it is sufficient that the entire sponge layer 61 is not crushed. Therefore, the sponge layer 61 may be made of a sea surface such as rubber or synthetic resin. The sponge layer 6
Although the thickness of 1 depends on the weight of the horizontal force and lifting force elastic resistance device 46, the thickness may be about 5 to 15 mm, and a material having a compressive strength of about 5 to 10 kg / cm ² may be appropriately selected. It should be used. The sponge layer 61
Is that a connecting girder 49 of reinforced concrete or the like is built directly above it, and after the concrete main girder 47 or the connecting girder 49 is built, dead loads such as a large number of floor slabs 48 are applied in the bridge axis direction. In this state, the load bearing elastic bearing device 46 also sinks by about 1 to 10 mm, and accordingly, the sponge layer 61 is also compressed. Accordingly, the thickness of the sponge layer 61 may be appropriately selected in consideration of these. After that, the sponge layer 61 is further tightened and crushed by further tightening the nut 57 screwed to the anchor bolt 55, so that the horizontal force / uplift elastic resistance device 46 is firmly fixed to the lower structure such as a pier. It can be fixed to the object 1. Note that the horizontal force / uplift elastic bearing resistance device 46 is disposed at a lower level than the sliding elastic bearing device 30 on the upper surface of the lower structure 1. The horizontal force / uplift elastic resistance device 46 buffers the horizontal force, upward lift, and rotational force of the upper structure in all directions. Further, reinforcing ribs may be provided on the upper surface of the lower steel member 53 in the horizontal force / uplift elastic resistance device 46 as appropriate.

On the upper portion of the lower structure 1, a sliding elastic bearing device 3 for a structure for supporting the load of the upper structure 22 is provided.
0 at a position laterally away from the steel anchor rod 5
8 is embedded and fixed, and the steel anchor rod 58 is fixed.
Has a main concrete girder 4 extending in the direction of the adjacent bridge axis.
An elliptical anchor cap 59 having a transverse section extending in the bridge axis direction and embedded in a reinforced concrete cross girder 49 connecting between the 7 is covered, and an inner upper end of the anchor cap 59 and the steel anchor rod are provided. A gap is provided between the upper end of the anchor cap 59 and a spiral reinforcing bar 60 is provided around the anchor cap 59, and a lateral movement restricting device 70 for restricting lateral movement in a direction perpendicular to the bridge axis is provided. It is configured. The lower portion of the cross beam 49 is provided between the support portions 71 adjacent to each other in a direction intersecting with a bridge shaft projecting upward from the upper surface of the lower structure 1 made of concrete or the like.
A lower protruding portion 72 is provided so as to protrude downward. Therefore, even if the steel anchor rod 58 is plastically deformed in the lateral direction due to a large horizontal force due to a large seismic force, the support structure 71 and the lower projecting portion 72 cooperate to prevent the upper structure from being dropped. Can be fulfilled. The lateral movement restricting device 70 for restricting the lateral movement in the direction perpendicular to the bridge axis may be provided as needed.

Next, the procedure for installing the above-described bridge support device will be described. When installing the seismic isolation bearing device A including the sliding elastic bearing device 30 for a structure and the horizontal force / uplift elastic resistance device 46 of the above embodiment, first, the sliding bearing for load bearing is mounted on the upper part of the lower structure 1. The anchor bolt 15 of the elastic bearing device 30 is fixed to the lower structure 1 so as to be embedded, and a concrete main girder 47 extending in the bridge axis direction is placed on the upper part of the sliding elastic bearing device 30 for the structure, and then A sponge layer 6 is formed on the lower structure 1 at a position laterally separated from the load-bearing slide-type elastic bearing device 30 in a direction intersecting the bridge axis direction.
The horizontal force / uplift elastic resistance device 46 is placed with an appropriate interposition of 1 and the horizontal force / uplift elastic resistance device 46 is temporarily tightened and fixed to such an extent that the sponge layer 61 is not crushed. After appropriately arranging and installing the reinforcing member 46 on the upper part of the horizontal force / uplift elastic resistance device 46, the space between the main girders 47 extending in the bridge axis direction and the horizontal force / uplift elastic resistance device 46 are attached. The concrete cross beam 49 to be connected is built. At the end of the concrete main girder 47, a reinforcing bar is projected so as to project laterally toward an adjacent main girder as appropriate (not shown). Then, after constructing the connecting cross beam 49, the formwork and the like are removed, and then the nuts 57 on the front and rear sides in the bridge axis direction are strongly tightened so as to crush the sponge layer 61 below the horizontal force / uplift elastic resistance device 46. And fix it. In this manner, the load imposed on the upper structure including the horizontal girder and the floor slab of the horizontal force / uplift elastic resistance device 46 can be reduced, and the state can be substantially reduced to almost no load. When the horizontal force / lifting elastic bearing 46 and the lateral movement limiting device 70 are attached as described above, the webs 47a of the adjacent main girder 47 having a T-shaped cross section are used.
A space surrounded by the upper flange 47b and the upper flange 47b can be used as a working space.

FIG. 18 and FIG. 19 show a second embodiment in which a plate girder (or box girder) 75 is newly constructed and supported, and shows the upper surface of the lower structure 1 consisting of a pier. At the end of each of the flanges 74 projecting so as to extend in the central portion and in the direction perpendicular to the bridge axis, support portions 3 projecting upward are provided (a total of three in the illustrated case).
9 to 15, the slide type elastic bearing device 30 for load support shown in FIG. 9 to FIG. 15 is disposed, the lower portion thereof is fixed, and a sponge layer 61 is provided at an intermediate portion between the support portions 3.
The horizontal force / uplift elastic resistance device 46 shown in FIGS. 16 and 17 is provided with the lower structure 1 interposed therebetween.
It is fixed to. Next, an upper structure 22 consisting of a plate girder (or box girder) 75 is constructed on the upper part of the slide type elastic bearing device 30 for supporting the load, and the anchor bolts on the upper part of the horizontal force / uplift elastic resistance device 46 are constructed. 54 to embed the horizontal force and upward lift elastic resistance device 46.
And the lower part of the plate girder 75 are integrated. Note that the structure and operation of the slide-type elastic bearing device 30 for load support and the horizontal force / uplift elastic resistance device 46 are described below.
Since it is the same as the case of the first embodiment, the same portions are denoted by the same reference numerals and description thereof will be omitted.
In the case of the second embodiment, a plate girder (or a box girder) is used instead of the upper structure 22 composed of a number of main girders 47 and connecting horizontal girder 49 connecting the main girder 47 as in the first embodiment. The second embodiment is different from the first embodiment in that the entire upper structure 22 constituted by 75) is constructed, but other configurations are the same as those in the first embodiment.

The separable bridge seismic isolation bearing device A operates as follows. The load of the upper structure 22 such as a road bridge supported by a main girder 47 such as a concrete girder or a steel girder is received by the load supporting elastic bearing device 30 and is applied to a horizontal force / uplift elastic resistance device 46. In the initial state, even if the load on the upper structure 22 is applied, after the adjustment by crushing the sponge layer 61, the load on the upper structure is hardly applied and the state is almost no load. When a large earthquake occurs, the downward force acting on the upper structure 22 such as the main girder 47 or the plate girder (or box girder) 75 is relaxed by compressive deformation of the rubber in the shear restraint wall 4. Can be dispersed. With respect to the upper lift acting on the upper structure 22 such as the main girder 47 or the plate girder (also box girder) 75, the upper structure 22 such as the main girder 47 is connected to the upper structure 22 via the horizontal force / uplift elastic resistance device 46. And the lower structure 1 are coupled to each other, so that the upward lift is controlled while being smoothly buffered by the expansion / contraction deformation of the horizontal force / uplift elastic resistance device 46.

The horizontal force acting on the main structure 47 such as a concrete girder or the upper structure 22 such as a slab girder (or box girder) 75 due to an earthquake, that is, the force in the direction of the bridge axis and the direction perpendicular to the horizontal axis. The sole plate 38 attached to the lower surface of the upper structure 22 such as the concrete main girder 47 or the plate girder (also box girder) 75 is fitted to the upper part of the support member 31 via a slip bearing 67 such as a stainless steel plate. The horizontal force is attenuated due to sliding friction between the support member 35 and the upper surface Teflon layer 35d, which is in pressure contact with the pressure contact support portion and is slidably joined. In addition to this, at the same time, the horizontal force and the lift elastic resistance device 46 is attenuated by the shear deformation in the bridge axis direction, and the horizontal force and the lift elastic resistance in the direction perpendicular to the bridge axis. The device 46 is attenuated by the shear deformation. Further, a lateral movement restricting device 70 for restricting lateral movement in the direction perpendicular to the bridge axis as in the above embodiment.
Is provided so as to prevent lateral movement in the direction perpendicular to the bridge axis.

Therefore, against the seismic force acting on the upper structure 22 such as the main girder 47 or the slab girder (also box girder) 75 due to the earthquake, the slide bearing action by the frictional force of the slide type elastic bearing device 30 and the high force Effective due to the interaction between the compressive deformation of the elastic layer 6 of the bearing elastic bearing body 31, the supporting action due to the shearing deformation of the horizontal force / uplift elastic resistance device (buffer means) 46, and the expansion / contraction resistance action of the elastic layer against the upward lift. Can be attenuated.

In the case of the high bearing elastic bearing body 31 of the above embodiment, an annular concave portion 33 is formed on the outer peripheral surface of the elastic layer 6 such as a rubber layer by R processing or the like, so that the outer peripheral edge of the rubber layer is further increased. Therefore, when the rubber layer is compressed and deformed by receiving a high load from above, the outer surface of the rubber layer is substantially the same as a whole, so that the upper and lower fitting support members are formed. There is little peeling effect on the bonding surface with 35, 36, and it can be smoothly compressed and deformed, and can absorb rotation and vibration of the upper structure 22 such as the main girder 47 or the plate girder (also box girder) 75. Further, since at least one hard plate 34 such as a reinforcing steel plate is buried in the rubber layer, even if a high bearing pressure is applied, the internal stress of the rubber layer is widely distributed, and excessive localization of the rubber layer occurs. Distortion can be suppressed. In the high bearing elastic bearing 31 used in the present invention, the steel members 9 and 10 in contact with the rubber layer 6 or the hard plate 34 such as a reinforcing steel plate or the upper fitting support member 35 and the lower fitting support member 36 are provided. In order to enlarge the bonding surface and increase the shear resistance of the rubber layer by roughening the bonding interface with the rubber layer in Increases force and peel resistance.

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. As 34, at least one or more steel plates having a plate thickness of 1 mm or more may be embedded, and a plurality of steel plates may be embedded as necessary. Also, in the case of the above embodiment, it can be used for high bearing pressure. However, when used for higher bearing pressure, the thickness of a hard plate such as a reinforcing steel plate embedded in the rubber layer (or elastic layer) 6 is reduced. For example, 1 to 100 mm or the like may be appropriately selected, and a plurality of sheets may be embedded and used as needed. If the uneven bonding surface 40 is formed on the front and back surfaces of the hard plate 34 such as a reinforcing steel plate by annular corrugation or knurling, the integrated area is further increased by increasing the bonding area, and the peeling resistance and the shearing force are increased. Deformation resistance can be increased. If the bonding interface between the lower steel member 9, the upper steel member 10, the upper fitting support member 35, and the lower fitting support member 36 and the rubber layer 6 in each of the above embodiments is roughened or unevenly engaged, Compared to a flat bonding interface, the increased bonding area due to uneven engagement or roughened surface further enhances the integral bonding, thereby increasing the peeling resistance and the shear deformation resistance, and further increasing the high bearing pressure Can be used at any time.

In practicing the present invention, the slide-type elastic bearing device may be inverted so that the lower side is slid. When the present invention is carried out, the sole plate 38 and the lower support member 2 may be attached by bolting or welding when the upper structure 22 is made of steel. Also,
The planar shape of the sponge layer 61 may be a rectangular sponge layer 61 by appropriately combining a plurality of split-type sponge layers in a plane, and may be configured to appropriately provide an opening for pressure adjustment. Alternatively, a plurality of divided sponge layers may be interspersed.

[0040]

As described above, according to the bridge bearing device according to the present invention, a sliding elastic bearing device for a structure is combined with a separate horizontal force / lifting elastic resistance device independently of the sliding elastic bearing device. Compared to the integrated seismic isolation bearing device, the design can be designed separately from the design at the time of the earthquake and the design at the time of the earthquake, so that the design of the seismic intensity method and the holding strength method can be greatly simplified, In addition, a high-bearing, forced-slide-type elastic bearing device is used to support the load of the upper structure. The structure is relatively simple, so it can be manufactured at low cost. It can be provided and does not cause shear deformation,
Since fatigue due to repeated relatively large shear deformation caused by the lateral displacement of the elastic body does not occur, the durability of the elastic body can be increased, and while the load bearing action and the rotation bearing action of the elastic bearing device function. In addition, since the upper structure such as the main girder can be slidably supported at all times, even if seismic force acts during construction as well as after the construction of the upper structure, the elastic bearing device has excessive lateral supporting force. It is possible to support the upper structure without exerting the above. In addition, since the front and rear shear deformation restraining walls are open on both sides in the direction perpendicular to the bridge axis, impurities such as rainwater and dust do not accumulate in the shear deformation restraining walls, thereby exhibiting the elasticity of rubber. In addition, there is no danger that maintenance can be performed, and maintenance such as cleaning is easy, the structure is simple and relatively small, so that an elastic bearing device for supporting an economic load can be provided, When the upper lift elastic resistance device is installed, it is possible to install it while reducing the load on the upper structure such as the main girder, so that the bridge bearing device can be installed rationally by simple means. Further, since the elastic bearing device does not cause shear deformation, the design is simplified, and therefore, the required compression spring constant can be arbitrarily set. Further, the bridge support device of the present invention has a simple structure and is easy to manufacture, and the device can be transported and installed relatively easily. In the case where the bonding interface with the elastic layer of each of the steel members at the upper and lower ends of the elastic bearing body is made rough, the bonding surface is enlarged and the shear resistance of the rubber layer is increased, so that a relatively high support is provided. Pressure stress can be dealt with by a simple configuration.

[Brief description of the drawings]

FIG. 1 shows a state immediately before a bridge type supporting device having a sliding type elastic supporting device for a structure and a horizontal force / uplift elastic resistance device according to a first embodiment of the present invention is installed and a cross beam is built. It is a vertical front view which expands and shows.

FIG. 2 is a longitudinal sectional front view showing a state in which a cross beam is built in FIG.

FIG. 3 shows a state in which a bridge type support device provided with a sliding elastic support device for a structure and a horizontal force / uplift elastic resistance device according to a first embodiment of the present invention and a cross beam is built. FIG.

FIG. 4 is a partial cross-sectional plan view of FIG.

FIG. 5 is a sectional view taken along line AA of FIG. 4;

FIG. 6 is a longitudinal sectional front view showing the entire state just before building the cross beam in FIG. 3;

FIG. 7 is a partial cross-sectional plan view of FIG.

FIG. 8 is a sectional view taken along line BB of FIG. 7;

FIG. 9 is a plan view of the elastic bearing body.

FIG. 10 is a vertical sectional side view of FIG. 9;

FIG. 11 is a front view of a sliding elastic bearing device for a structure.

FIG. 12 is a partial vertical front view of FIG. 11;

FIG. 13 is a plan view in which a part of FIG. 11 is omitted.

FIG. 14 is a plan view of a lower support member.

FIG. 15 is a front view of FIG.

FIG. 16 is a side view of a horizontal force / uplift elastic resistance device.

FIG. 17 is a plan view of a horizontal force / uplift elastic resistance device.

FIG. 18 is a longitudinal sectional front view showing a state in which a plate girder is built on a bridge supporting device provided with a sliding type elastic supporting device for a structure and a horizontal force / uplift elastic resistance device according to an embodiment of the present invention. is there.

19 is a plan view showing an arrangement state of a sliding elastic support device for a structure and a horizontal force / uplift elastic resistance device in FIG. 18;

FIG. 20 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 Support part 4 Steel shear deformation restraint wall 4a Front shear deformation restraint wall 4b Rear shear deformation restraint wall 4c Arc-shaped inner wall surface 4d Top surface 5 Elastic bearing body 6 Elastic body (layer) 7 Reinforcement steel plate 8 Anchor bolt 9 Lower steel member 9a Upward opening groove 10 Upper steel member 10a Downward opening groove 13 Slip bearing member 15 Bolt (anchor bolt) 22 Upper structure 30 Seismic isolation bearing device 31 High bearing elastic bearing 32 Base plate 33 Annular concave portion 34 Hard plate 35 Upper fitting support member 35a Annular reaction wall 36 Lower fitting support member 36a Annular reaction wall 37 Adhesive surface 38 Sole plate 39 Slip support surface 40 Uneven adhesive surface 43 Low friction sliding plate 44 Fitting concave part 46 Horizontal force and upper lift elastic resistance device 47 Main girder 48 Floor slab 49 Connecting girder 50 Upper steel Material 51 Elastic layer (rubber layer) 52 Steel plate 53 Lower steel member 54 Anchor bolt 55 Anchor bolt 56 Through hole (of lower steel member 53) 57 Nut 58 Steel anchor rod 59 Anchor cap 60 Spiral rebar 61 Sponge layer 62 R Swelled portion 63 Upper support plate 64 Lower support plate 65 Adhesive surface 67 Slip support member 68 Bearing support member 70 Lateral movement restricting device 71 Support portion 72 Lower protrusion 73 Deformable space 74 Support flange 75 Plate girder

Claims (7)

[Claims] 1. A bridge bearing device disposed between an upper structure and a lower structure such as an abutment or a pier, wherein a lower support member fixed to the lower structure and an upper steel member via an elastic layer. The load-bearing slide-type elastic bearing device is constituted by an elastic bearing body integrally having a member and a lower steel member, and the lower steel member and the upper steel member are:
The upper part of the lower support member is fitted to the shear deformation restraining wall having a plane arc-shaped inner surface provided so as to face at a distance in the bridge axis direction so as not to move laterally, and the upper part is attached to the shear deformation restraint wall. A steel member is provided so as to be relatively slidable in the vertical direction, and an upper surface of the upper steel member is provided at a higher level than an upper surface of the shear deformation restraining wall, and an upper portion of the upper steel member is provided. An upper structure such as a main girder, a plate girder or a box girder extending in the bridge axis direction is always slidably supported in a lateral direction via a slide bearing material having a slip surface provided on the side, and the load-bearing slide type. At the upper part of the lower structure at a position laterally separated from the elastic bearing device in a direction intersecting with the bridge axis direction, an intermediate portion has a laminated portion in which an elastic layer such as rubber and a steel plate are alternately laminated in the vertical direction. This The lower part of the horizontal force and upper lift elastic resistance device having steel members at both upper and lower ends is placed and fixed, and the main member extending in the bridge axis direction is provided above the horizontal force and upper lift elastic resistance device. A bridge bearing device provided with a sliding type elastic bearing device for a structure and a horizontal force / uplift elastic resistance device, wherein an upper structure such as a girder, a plate girder or a box girder is provided. 2. A bridge bearing device disposed between an upper structure and a lower structure such as an abutment or a pier, wherein a lower support member fixed to the lower structure and an upper steel member are provided via an elastic layer. The load-bearing slide-type elastic bearing device is constituted by an elastic bearing body integrally having a member and a lower steel member, and the lower steel member and the upper steel member are:
The upper part of the lower support member is fitted to the shear deformation restraining wall having a plane arc-shaped inner surface provided so as to face at a distance in the bridge axis direction so as not to move laterally, and the upper part is attached to the shear deformation restraint wall. A steel member is provided so as to be relatively slidable in the vertical direction, and an upper surface of the upper steel member is provided at a higher level than an upper surface of the shear deformation restraining wall, and an upper portion of the upper steel member is provided. An upper structure such as a main girder extending in the bridge axis direction is always slidably supported in the lateral direction via a slide bearing material having a slip surface provided on the bridge shaft, and the bridge shaft is slid from the slide type elastic bearing device for load bearing. In the upper part of the lower structure at a position separated in the horizontal direction intersecting the direction, a laminated part in which an elastic layer such as rubber and a steel plate are alternately laminated in the vertical direction in the middle part, and On both ends The lower part of the horizontal force and upper lift elastic resistance device having the horizontal member and the upper member is mounted and fixed, and a horizontal girder is provided on the upper part of the horizontal force and upper lift elastic resistance device, and the main girder end adjacent to the horizontal girder is provided. A sliding elastic support device for a structure and a bridge support device provided with a horizontal force / uplift elastic resistance device, wherein the support portion and the horizontal force / uplift elastic resistance device are connected to each other. 3. The structure according to claim 1, wherein the lower supporting member is fixed to the lower structure via a sponge layer. Bridge support device. 4. A lower support member fixed to a lower structure, an upper steel member and a lower member via an elastic layer when installing a bridge support device disposed between the upper structure and the lower structure. A bridge axis direction in which a load-type sliding elastic bearing device is constituted by an elastic bearing body integrally including a steel member, and the lower steel member and the upper steel member are provided above the lower supporting member. The upper steel member is fitted to the shear deformation restraining wall having a plane arc-shaped inner surface provided so as to face at a distance so as not to be laterally movable, and the upper steel member is relatively vertically attached to the shear deformation restraint wall. The upper steel member is slidably provided, and the upper surface of the upper steel member is disposed at a higher level than the upper surface of the shear deformation restraining wall. In the direction On the upper part of the lower structure at a distant position, while having a laminated portion in which an elastic layer such as rubber and a steel plate are alternately laminated in a vertical direction in an intermediate portion, and a steel member at both upper and lower ends integrally with this. A main girder or plate extending in the direction of the bridge axis, on which a horizontal force / uplift elastic resistance device is mounted and fixed, and then a slide type elastic support device for load bearing and the upper portion of the horizontal force / uplift elastic resistance device. An installation method of a bridge-type bearing device having a sliding elastic support device for a structure and a horizontal force / uplift elastic resistance device characterized by constructing an upper structure such as a girder or a box girder. 5. A lower support member fixed to a lower structure, an upper steel member and a lower member via an elastic layer when installing a bridge bearing device disposed between the upper structure and the lower structure. A bridge axis direction in which a load-type sliding elastic bearing device is constituted by an elastic bearing body integrally including a steel member, and the lower steel member and the upper steel member are provided above the lower supporting member. The upper steel member is fitted to the shear deformation restraining wall having a plane arc-shaped inner surface provided so as to face at a distance so as not to be laterally movable, and the upper steel member is relatively vertically attached to the shear deformation restraint wall. The upper steel member is provided so as to be slidable, and the upper surface of the upper steel member is disposed at a higher level than the upper surface of the shear deformation restraining wall, and extends in the bridge axis direction on the upper portion of the load-type sliding elastic bearing device. Main girder Then, on the upper portion of the lower structure at a position laterally separated from the load-bearing slide elastic bearing device in a direction intersecting the bridge axis direction, an elastic layer such as rubber and a steel plate are provided at an intermediate portion. It has a laminated portion alternately laminated in the vertical direction, and mounts and fixes a horizontal force / uplift elastic resistance device having steel members at both upper and lower ends integrally therewith, and subsequently, the horizontal force / uplift A sliding type elastic bearing device for a structure, comprising, on an upper part of the elastic resistance device, a cross girder connecting between ends of the main girder extending in the bridge axis direction and connecting the horizontal force / uplift elastic resistance device; and A method for installing a bearing device for a bridge provided with a horizontal force / uplift elastic resistance device. 6. A lower support member fixed to a lower structure, an upper steel member and a lower member via an elastic layer when installing a bridge support device disposed between the upper structure and the lower structure. A bridge axis direction in which a load-type sliding elastic bearing device is constituted by an elastic bearing body integrally including a steel member, and the lower steel member and the upper steel member are provided above the lower supporting member. The upper steel member is vertically non-movably fitted to a shear deformation restraining wall having an arcuate inner surface provided so as to oppose at an interval, and the upper steel member slides relatively vertically in the shear deformation restraining wall. The upper steel member is movably provided, and the upper surface of the upper steel member is disposed at a higher level than the upper surface of the shear deformation constraining wall, and the lateral direction intersecting the bridge axis direction from the load-bearing sliding elastic bearing device. Away A sponge layer is interposed on the upper part of the lower structure at a position where the elastic part such as rubber and a steel plate are alternately laminated in the vertical direction in the middle part, and the upper and lower ends are integrally formed with the laminated part. A horizontal force / uplift elastic resistance device having a steel member is placed on the portion, and the horizontal force / uplift elastic resistance device is supported by the sponge layer and temporarily fixed and fixed. An upper structure such as a main girder, a plate girder, or a box girder extending in the bridge axis direction is constructed on the upper part of the lift elastic resistance device, and then the lower part of the horizontal force / uplift elastic resistance device so as to crush the sponge layer. A fixing method for a bridge bearing device provided with a sliding elastic support device for a structure and a horizontal force / uplift elastic resistance device, characterized in that it is fully tightened and fixed while lowering the level of the bridge. 7. A lower supporting member fixed to a lower structure, an upper steel member and a lower member via an elastic layer when installing a bridge support device disposed between the upper structure and the lower structure. A bridge axis direction in which a load-type sliding elastic bearing device is constituted by an elastic bearing body integrally including a steel member, and the lower steel member and the upper steel member are provided above the lower supporting member. The upper steel member is vertically non-movably fitted to a shear deformation restraining wall having an arcuate inner surface provided so as to oppose at an interval, and the upper steel member slides relatively vertically in the shear deformation restraining wall. The upper steel member is movably provided, and the upper surface of the upper steel member is disposed at a higher level than the upper surface of the shear deformation restraining wall, and extends in the bridge axis direction on the upper portion of the load-type sliding elastic bearing device. Place main girder Then, a sponge layer is interposed on the upper portion of the lower structure at a position laterally separated from the slide-type elastic bearing device for load bearing in a direction intersecting with the bridge axis direction. A layer and a steel plate are laminated alternately in the vertical direction, and a horizontal force / uplift elastic resistance device having steel members at both upper and lower ends is placed integrally with the laminated portion, and the horizontal is formed by the sponge layer. The force and upper lift elastic resistance device is supported and temporarily tightened and fixed, and then, above the horizontal force and upper lift elastic resistance device, between the ends of the main girders extending in the bridge axis direction and the horizontal force and upper lift elastic device. Building a cross girder connecting the resistance device, and then tightening down the lower level of the horizontal force / uplift elastic resistance device so as to crush the sponge layer; Bearing Installation method for bridges bearing device equipped with a location and a horizontal force Ken'ue lifting elastic resistance unit.