JP6757639B2 - Bearing device for structures - Google Patents

Description

The present invention relates to a bearing device for a structure, which is installed in a structure such as a building or a bridge and absorbs seismic energy by elastic displacement of an elastic member, and the displacement amount differs in two orthogonal directions.

Conventionally, as a bearing device for structures such as buildings and bridges, an elastic bearing device that absorbs seismic energy by elastic displacement of an elastic member has been developed.

JP-A-2002-188122

In the conventional elastic support device, the shear elastic modulus of the elastic body itself is not directional, and has the same performance value (allowable displacement amount / rigidity) with respect to one direction orthogonal to the other direction orthogonal to the direction. is there.

However, the required performance value (allowable displacement amount / rigidity) in one orthogonal direction and the required performance value (allowable displacement amount / rigidity) in the other orthogonal direction may differ depending on the type of structure or the like.
In this case, when determining the shape (structure) of the elastic bearing, if the shape (structure) is set according to the one with the lower required performance, the displacement performance will be insufficient, so the one with the higher required performance should be used. The shape (structure) is set, but this has the problem that the plane size of the elastic layer becomes large, the elastic bearing becomes large, and the cost increases.

The present invention solves the problems of the prior art, has a simple structure, and is orthogonal to the required performance value (allowable displacement amount / rigidity) in one of the orthogonal directions without increasing the size of the elastic body. It is an object of the present invention to provide a structural bearing device capable of setting required performance values (allowable displacement amount / rigidity) in different directions.

In order to solve the above-mentioned problems, the structural support device of the present invention has an intermediate plate and an upper portion which is erected on the upper surface of the intermediate plate at a predetermined interval and has a guide portion formed in one direction orthogonal to the upper end. The guide member, the lower guide member which is erected on the lower surface of the intermediate plate at a predetermined interval and forms a guide portion in the other direction orthogonal to the lower end, and the guide portion of the upper guide member which is fixed to the upper structure side. An upper slide member that is movable in one direction orthogonal to each other and is immovably arranged in the other direction that is orthogonal to the lower structure, and the other direction that is fixed to the lower structure side and orthogonal to the guide portion of the lower guide member. A lower slide member that is movable and is arranged so as not to move in one direction orthogonal to each other, an upper elastic body fixed to the lower surface of the upper slide member and the upper surface of the early intermediate plate, and the upper surface of the lower slide member and the middle of the previous period. A lower elastic body fixed to the lower surface of the plate is provided, the rigidity of the upper elastic body and the lower elastic body are set to be different, and one direction orthogonal to the other direction orthogonal to the stress at the time of an earthquake is set. It is characterized in that the amount of displacement is different.

Further, in the structural bearing device of the present invention, an upper lift stop member for blocking the lift of the upper slide member is arranged on the upper guide member, and a lower lift for blocking the lift of the lower slide member is provided on the lower guide member. It is characterized by arranging a stop member.

Further, in the structural bearing device of the present invention, the upper guide member is formed with a fitting hole for fitting the engaging protrusion formed on the upper lift stop member, and the lower guide member is formed on the lower lift stop member. It is characterized in that a fitting hole for fitting the engaged protrusion is formed.

An intermediate plate, an upper guide member which is erected on the upper surface of the intermediate plate at a predetermined interval and has a guide portion formed in one direction orthogonal to the upper end, and an upper guide member which is erected on the lower surface of the intermediate plate at a predetermined interval. A lower guide member forming a guide portion in the other direction orthogonal to the lower end, and a lower guide member fixed to the upper structure side and movable in one direction orthogonal to the guide portion of the upper guide member and moving in the other direction orthogonal to each other. An upper slide member that is immovably arranged, and a lower slide member that is fixed to the lower structure side and is movable in the other direction orthogonal to the guide surface of the lower guide member and is immovably arranged in the orthogonal direction. The upper elastic body includes an upper elastic body fixed to the lower surface of the upper slide member and the upper surface of the intermediate plate, and a lower elastic body fixed to the upper surface of the lower slide member and the lower surface of the intermediate plate. By setting the rigidity of the lower elastic body to be different so that the amount of displacement in one orthogonal direction and the other orthogonal direction due to stress during an earthquake are different, the dimensions of the elastic body can be adjusted with a simple structure. It is possible to set the required performance value (allowable displacement amount / rigidity) in one orthogonal direction and the required performance value (allowable displacement amount / rigidity) in the other orthogonal direction differently without increasing the value.
A simple structure is achieved by arranging an upper lift stop member that blocks the lift of the upper slide member on the upper guide member and a lower lift stop member that blocks the lift of the lower slide member on the lower guide member. It becomes possible to cope with the vertical displacement applied to the structure during an earthquake.
A fitting hole is formed in the upper guide member to fit the engaging protrusion formed on the upper lift stopping member, and a fitting hole for fitting the engaging protrusion formed on the lower lift stopping member is formed in the lower guide member. By forming, it becomes possible to withstand a large lift.

It is a figure which shows the embodiment of this invention. It is a figure which shows the embodiment of this invention. It is a figure which shows the embodiment of this invention. It is a figure which shows the embodiment of this invention. It is a figure which shows the embodiment of this invention. It is a figure which shows the embodiment of this invention.

An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side view of the structural bearing device 1 of the present invention viewed from one orthogonal direction, and FIG. 2 is a side view of the structural bearing device 1 of the present invention viewed from the other orthogonal direction. is there.

The structural bearing device 1 includes an intermediate plate 2. On the upper surface of the intermediate plate 2, a pair of upper guide members 3 are erected in parallel in one direction orthogonal to each other with the lower ends fixed to the intermediate plate 2 at predetermined intervals. At the upper ends of the pair of upper guide members 3, an upper guide portion 3a composed of a vertical plane and a horizontal plane and extending in one direction orthogonal to each other is formed. The upper guide member 3 is formed with a fitting hole 3b into which the engaging protrusion 11b of the upper lift stop member 11 described later is fitted.

On the lower surface of the intermediate plate 2, a pair of lower guide members 4 are erected parallel to the other direction orthogonal to the intermediate plate 2 with the upper ends fixed to the intermediate plate 2 at predetermined intervals. At the lower ends of the pair of lower guide members 4, a lower guide portion 4a formed of a vertical plane and a horizontal plane and extending in the other direction orthogonal to each other is formed. The lower guide member 4 is formed with a fitting hole 4b into which the engaging protrusion 13b of the lower lift stop member 13 described later is fitted.

The upper slide member 5 is slidably orthogonal to the upper guide portion 3a formed at the upper end of the upper guide member 3 and extending in one orthogonal direction (X direction) consisting of a vertical plane and a horizontal plane. It is blocked from moving in the other direction (Y direction) and engages. The upper slide member 5 is fixed to the superstructure 6.

The lower slide member 7 is slidably orthogonal to the lower guide portion 4a formed at the lower end of the lower guide member 4 and extending in the other orthogonal direction (Y direction) consisting of the vertical plane and the horizontal plane. It is blocked from moving in one direction (X direction) and engages. The lower slide member 7 is fixed to the lower work 8.

1 and 2 are a side view of the structure bearing device 1 incorporating each member as seen from the X direction and a side view as seen from the Y direction. To assemble the structure bearing device 1, the upper elastic body 9 and the lower elastic body 10 are arranged on the upper and lower surfaces of the intermediate plate 2, the upper slide member 5 is arranged on the upper surface of the upper elastic body 9, and the lower elastic body 8 is arranged on the lower surface of the lower elastic body 8. The slide member 7 is arranged and integrated by vulcanization molding.

The engaging protrusion 11b of the upper lift stop member 11 fits into the fitting hole 3b in the upper guide 3, and the upper lift stop member 11 is fixed by the fixing bolt 12. The upper lift stop member 11 is formed with an upper lift stop portion 11a that engages with the upper surface of the upper slide member 5. The upper lift stop member 11 can withstand a large lift by fitting the engaging protrusion 11b into the fitting hole 3b and fixing the fixing bolt 12.

The engaging projection 13b of the lower lift stop member 13 fits into the fitting hole 4b in the lower guide 4, and the lower lift stop member 13 is fixed by the fixing bolt 12. The lower lift stop member 13 is formed with a lower lift stop portion 13a that engages with the lower surface of the lower slide member 7. The lower lift stop member 13 can withstand a large lift by fitting the engaging protrusion 13b into the fitting hole 4b and fixing the fixing bolt 12.

As shown in FIG. 5, with respect to the relative displacement during an earthquake, the displacement of the upper slide member 2 in the Y direction is caused by the vertical surface of the upper guide portion 3a composed of a vertical surface extending in the X direction and a horizontal plane. It is blocked and displaces in the X direction to absorb seismic energy. The upper lift stop portion 11a of the upper lift stop member 11 engages with the upper surface of the upper slide member 2 to prevent the displacement in the vertical direction.

As shown in FIG. 6, with respect to the relative displacement during an earthquake, the lower slide member 7 is displaced in the X direction by the vertical surface of the lower guide portion 7a composed of a vertical surface extending in the Y direction and a horizontal plane. It is blocked and displaces in the Y direction to absorb seismic energy. The lower lift stop portion 13a of the lower lift stop member 13 engages with the lower surface of the lower slide member 7 to prevent the displacement in the vertical direction.

Depending on the type of structure, the required performance in the X direction (allowable displacement amount / rigidity) and the required performance in the Y direction (allowable displacement amount / rigidity) may be set differently. When it is desired to make the displacement amount in the X direction smaller than the displacement amount in the Y direction, there is a method of making the volume of the upper elastic body 9 larger than the volume of the lower elastic body 10. However, this method has a problem that the size of the elastic body becomes large and the bearing device becomes large.

In the structural support device 1 of the present invention, when the required performance in the X direction (allowable displacement amount / rigidity) and the required performance in the Y direction (allowable displacement amount / rigidity) are set to be different, for example, the displacement in the X direction. When it is desired to make the amount smaller than the displacement amount in the Y direction, the rigidity of the upper elastic body 9 is made larger than the rigidity of the lower elastic body 10. On the contrary, when the displacement amount in the Y direction is set to be smaller than the displacement amount in the X direction, the rigidity of the lower elastic body 10 is made larger than the rigidity of the upper elastic body 9. Since the rigidity of the upper elastic body 9 and the lower elastic body 10 are set differently, the structure is simple, and the required performance values (allowable displacement amount / rigidity) in one of the orthogonal directions are not increased without increasing the dimensions of the elastic body. ) And the required performance value (allowable displacement amount / rigidity) in the other direction can be set differently.

As described above, according to the structural support device of the present invention, it has a simple structure and is orthogonal to the required performance value (allowable displacement amount / rigidity) in one direction orthogonal to each other without increasing the size of the elastic body. It is possible to set the required performance values (allowable displacement amount / rigidity) in the other direction to be different.

1: Structural bearing device 2: Intermediate plate 3: Upper guide member, 3a: Upper guide part, 3b: Fitting hole, 4: Lower guide member, 4a: Lower guide part, 4b: Fitting hole, 5 : Upper slide member, 6: Superstructure, 7: Lower slide member, 8: Substructure, 9: Upper elastic body, 10: Lower elastic body, 11: Upper lift stopper member, 11a: Upper lift stopper, 11b : Engagement protrusion, 12: Fixing bolt, 13: Lower lift stop member, 13a: Lower lift stop, 13b: Engagement protrusion

Claims (3)

With the intermediate plate
An upper guide member which is erected on the upper surface of the intermediate plate at a predetermined interval and has a guide portion formed in one direction orthogonal to the upper end.
A lower guide member which is erected on the lower surface of the intermediate plate at a predetermined interval and has a guide portion in the other direction orthogonal to the lower end.
An upper slide member that is fixed to the superstructure side and is movable in one direction orthogonal to the guide portion of the upper guide member and immovable in the other direction orthogonal to the upper slide member.
A lower slide member that is fixed to the lower structure side and is movable in the other direction orthogonal to the guide portion of the lower guide member and is immovably arranged in one direction orthogonal to the lower guide member.
An upper elastic body fixed to the lower surface of the upper slide member and the upper surface of the early intermediate plate,
A lower elastic body fixed to the upper surface of the lower slide member and the lower surface of the early intermediate plate,
With
For structures characterized in that the rigidity of the upper elastic body and the lower elastic body are set to be different so that the amount of displacement in one orthogonal direction and the other orthogonal direction due to stress during an earthquake is different. Support device.
The claim is characterized in that an upper lift stop member for blocking the lift of the upper slide member is arranged on the upper guide member, and a lower lift stop member for blocking the lift of the lower slide member is arranged on the lower guide member. The structural bearing device according to 1. A fitting hole is formed in the upper guide member to fit the engaging protrusion formed in the upper lift stopping member, and a fitting hole for fitting the engaging protrusion formed in the lower lift stopping member is formed in the lower guide member. The structural bearing device according to claim 2, wherein the structure is formed.

Images