JP2018009340A - Omnidirectional three-sided slide bearing device for structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an omnidirectional three-sided slide bearing device for a structure that has a simple structure with a small number of components, may be assembled and installed readily, is capable of dealing with horizontal displacement in all directions at a time of earthquake, and offers a large damping effect for seismic energy utilizing frictional force.SOLUTION: An omnidirectional three-sided slide bearing device for a structure includes: a first member having a large-diameter disc and a small-diameter disc fixed on either a superstructure side or a substructure side and connected by a connecting column; a plurality of fan-shaped slide members with a top surface constituting a first slide part together with an undersurface of the large-diameter disc and an undersurface constituting a second slide part together with a top surface of the small-diameter disc, between the large-diameter disc and the small-diameter disc of the first member, and having a first displacement transmission part formed on an outer periphery and extending to reach underneath the small-diameter disc; a ring-form elastic member on the outer periphery of the slide member; and a second member fixed on the other of the superstructure side or the substructure side, having a top surface constituting a third slide part together with an undersurface of the small-diameter disc, and an outer peripheral part forming a second displacement transmission part. Seismic energy is dampened utilizing frictional resistance against horizontal displacement in all directions at a time of earthquake, when the first, second and third slide parts slide.SELECTED DRAWING: Figure 5

Description

  The present invention is installed between an upper structure and a lower structure of a structure such as a building or a bridge, and attenuates seismic energy by sliding through three sliding surfaces against horizontal displacement in all directions during an earthquake. The present invention relates to an omnidirectional three-sided slide support device for a structure.

  As a seismic isolation or vibration control support device for a structure, an elastic support with a sliding surface on one of the upper and lower surfaces is placed between the upper structure and the lower structure, and the horizontal displacement that acts on the lower structure during an earthquake due to the frictional force of the sliding surface There has been proposed a double-sided slide support device for a structure that reduces the noise and transmits it to the superstructure.

JP 2002-39266 A

  However, the conventional slide bearing device does not deal with horizontal displacement in all directions, and has a problem that the seismic energy is not sufficiently attenuated by the frictional force of the slide surface.

  The present invention solves the problems of the prior art, has a simple structure, has a small number of parts, is easy to assemble and install, can handle horizontal displacement in all directions during an earthquake, and has a great effect of damping earthquake energy due to frictional forces. An object of the present invention is to provide an omnidirectional three-sided slide support device for a structure.

In order to solve the above-mentioned problem, the omnidirectional three-surface slide support device for a structure according to the present invention has a large-diameter disk and a small-diameter disk fixed to one of the upper structure side and the lower structure side by a connecting column at the center. The connected first member, and the upper surface is disposed between the large-diameter disk and the small-diameter disk of the first member, the upper surface constitutes the lower surface of the large-diameter disk and the first slide portion, and the lower surface is the upper surface of the small-diameter disk. And a plurality of fan-shaped slide members forming a first displacement transmitting portion that constitutes the second slide portion and extends to the bottom of the small-diameter disk on the outer periphery,
A ring-shaped elastic member having resilience disposed on the outer periphery of the slide member and a columnar shape fixed to the other of the upper structure side or the lower structure side and having a smaller diameter than the small diameter disk of the first member. A second member having a lower surface and a third slide portion, and an outer peripheral portion constituting a second displacement transmitting portion, and slides relative to horizontal displacement in all directions between the upper structure and the lower structure during an earthquake. Seismic energy is efficiently attenuated by frictional resistance caused by sliding of the first slide part, the second slide part and the third slide part to which slide resistance is added by a ring-shaped elastic member disposed on the outer periphery of the member. To do.

  In the omnidirectional three-surface slide bearing device for a structure of the present invention, the elastic force of the ring-shaped elastic member is set so as to have a displacement limiting function in which a plurality of slide members do not slide more than a predetermined amount due to a large displacement during an earthquake. Features.

A first member in which a large-diameter disk and a small-diameter disk fixed to one of the upper structure side or the lower structure side are connected by a connecting column at the center, and the large-diameter disk and the small-diameter disk of the first member; The first displacement transmission is disposed between the upper surface and the lower surface of the large-diameter disk and the first slide part, and the lower surface forms the upper surface and the second slide part of the small-diameter disk and extends to the outer periphery to the lower side of the small-diameter disk. A plurality of fan-shaped slide members forming a portion, a ring-shaped elastic member having resilience disposed on the outer periphery of the slide member, and a small-diameter circle of the first member fixed to the other of the upper structure side or the lower structure side A cylindrical member having a diameter smaller than that of the plate, and an upper surface comprising a lower surface of a small-diameter disk and a second member constituting a third slide portion and an outer peripheral portion constituting a second displacement transmitting portion, and an upper structure and a lower structure in an earthquake. A ring-shaped bullet placed on the outer periphery of the slide member against horizontal displacement in all directions The first slide portion and the second slide portion of the slide member are efficiently attenuated by the frictional resistance caused by the slide resistance of the first slide portion, the second slide portion, and the third slide portion to which the slide resistance is added by the member. Seismic energy can be efficiently attenuated by the slide through the slide part and the slide through the third slide part.
By setting the elastic force of the ring-shaped elastic member to have a displacement limiting function that prevents multiple slide members from sliding more than a predetermined amount due to large displacement during an earthquake, slide resistance is added to the slide member and displacement of the slide member is limited It becomes possible to demonstrate the function.

(A) (b) It is a figure which shows embodiment of this invention. (A) (b) It is a figure which shows embodiment of this invention. It is a figure which shows embodiment of this invention. (A) (b) It is a figure which shows embodiment of this invention. (A) (b) It is a figure which shows embodiment of this invention. (A) (b) It is a figure which shows embodiment of this invention. (A) (b) It is a figure which shows embodiment of this invention.

  An embodiment of the present invention will be described with reference to the drawings. Fig.1 (a) (b) is the top view and side view of the 1st member 2 which comprise the omnidirectional three-surface slide support apparatus 1 for structures of this invention.

  In the first member 2, a large-diameter disk 3 and a small-diameter disk 4 arranged in parallel are connected by a connecting column 5 at the center. The large-diameter disk 3 of the first member 2 is fixed to one of the upper structure side and the lower structure side.

  2A is a top view of the slide member 6 disposed between the large-diameter disk 3 and the small-diameter disk 4 of the first member 2, and FIG. 2B is a single slide member 6. FIG. The slide member 6 has an arc whose inner peripheral surface is in surface contact with the connecting cylinder 5 and an outer peripheral surface having a circular arc shape, and is arranged such that the outer periphery of the plurality of slide members 6 forms a circle at the neutral position. . In the figure, the slide member 6 shows an embodiment in which a circle is divided into six parts, but the number of divisions of the slide member is not limited to six.

  The upper surface of the slide member 6 constitutes the lower surface of the large-diameter disc 3 and the first slide portion A, and the lower surface of the slide member 6 constitutes the upper surface of the small-diameter disc 4 and the second slide portion B. The thickness of the slide member 6 is made substantially the same as the distance between the lower surface of the large diameter disk 3 and the upper surface of the small diameter disk 4.

  Formed on the outer periphery of the slide member 6 is a first displacement transmitting portion 7 that extends below the lower surface of the small-diameter disk 4 with the slide member 6 disposed between the large-diameter disk 3 and the small-diameter disk 4. The

  FIG. 3 shows a restoration in which a plurality of fan-shaped slide members 6 are disposed between the large-diameter disk 3 and the small-diameter disk 4 of the first member 2 and then closely attached to the outer periphery of the plurality of slide members 6. FIG. 6 is a top view of the elastic ring-shaped elastic member 8. The ring-shaped elastic member 8 is formed of an elastic material having resilience such as rubber. The ring-shaped elastic member 8 is disposed so as to cover up to the outer periphery of the first displacement transmitting portion 7 of the plurality of fan-shaped slide members 6 whose outer periphery is circular at the neutral position. The inner diameter of the ring-shaped elastic member 8 is slightly smaller than the outer diameter of the plurality of fan-shaped slide members 6 whose outer periphery is circular at the neutral position, and the outer periphery of the ring-shaped elastic member 8 and the plurality of fan-shaped slide members 6 is Arrange them so that they are in close contact.

  The ring-shaped elastic member 8 has a function of adding slide resistance to the slide member 6 with respect to displacement during an earthquake. Further, the elastic force of the ring-shaped elastic member is set so that a plurality of slide members have a displacement limiting function that prevents the slide members from sliding more than a predetermined amount due to a large displacement during an earthquake.

  4A and 4B are a top view and a side view of the second member 9 fixed to the other of the upper structure side or the lower structure side. In the second member 9, a cylindrical portion 11 having an outer diameter smaller than the outer diameter of the small-diameter disk 4 of the first member 2 is formed on the base portion 10. The upper surface of the cylindrical part 11 and the lower surface of the small-diameter disk 4 constitute a third slide part C. The outer peripheral surface of the cylindrical part 11 constitutes the second displacement transmitting part 12.

  FIGS. 5A and 5B are a top view and a longitudinal sectional view showing the state of the neutral position in which the first member 2, the slide member 6, the ring-shaped elastic member 8, and the second member 9 are assembled. A first slide portion A is formed by the upper surface of the slide member 6 and the lower surface of the large-diameter disk 3, and a second slide portion B is formed by the lower surface of the slide member 6 and the upper surface of the small-diameter disk 4. The third slide portion C is formed by the lower surface of the small-diameter disk 4 and serves as a support for the three-surface slide.

  Since the outer diameter of the cylindrical portion 11 of the second member 9 is set to be smaller than the outer diameter of the small-diameter disk 4, it is possible to cope with horizontal displacement in the relative directions of the upper structure and the lower structure. There is an interval L between the first displacement transmission portion 7 of the slide member on the first member side and the second displacement transmission portion 12 of the cylindrical portion 11 of the second member 9 in the neutral position. This interval L requires a certain time until the collision between the first displacement transmission unit 7 and the second displacement transmission unit 12 with respect to the initial sudden large displacement at the time of the earthquake, and alleviates the impact force due to the collision to some extent, Prevents damage to the slide bearing due to impact force. The relaxation of the impact force due to the collision also depends on the elastic force of the ring-shaped elastic member 8 disposed on the outer periphery of the slide member 6.

  6A and 6B show that the first member 2 and the second member 9 move in the direction of the arrow due to the displacement at the time of the earthquake, and the second displacement transmission portion 12 of the second member 9 and the first displacement of the slide member 6 are shown. It is a figure which shows the state which the transmission part 7 engaged. At this stage, the seismic energy is attenuated only by the frictional force of the third slide portion C. As described above, the distance L between the first displacement transmission portion 7 of the slide member on the first member side in the neutral position and the second displacement transmission portion 12 of the cylindrical portion 11 of the second member 9 is the initial value at the time of the earthquake. For a sudden large displacement, a certain time is required until the first displacement transmission unit 7 and the second displacement transmission unit 12 collide, and the impact force due to the collision is alleviated to some extent, and the slide bearing is prevented from being damaged by the impact force. .

  7A and 7B show that a part of the plurality of slide members 6 resists the elastic force of the ring-shaped elastic member 8 through the first slide portion A and the second slide portion B due to the displacement at the time of the earthquake. It is a figure which shows the state which slid. The slide through the first slide portion A and the second slide portion B of the slide member 6 can efficiently attenuate the seismic energy by the slide resistance and frictional force due to the elastic force of the ring-shaped elastic member 8.

  The elastic force of the ring-shaped elastic member 8 is set so as to have a function of adding slide resistance to the slide member 6 and a displacement limiting function in which a plurality of slide members do not slide more than a predetermined amount due to a large displacement during an earthquake.

  As described above, according to the omnidirectional slide support device for a structure of the present invention, the first slide portion and the second slide portion of the slide member, which are easy to assemble with a small number of parts and to which slide resistance is added by the ring-shaped elastic member, are provided. Seismic energy can be efficiently attenuated by the slide through the slide part and the slide through the third slide part.

  1: omnidirectional three-surface slide support device for structure, 2: first member, 3: large diameter disk, 4: small diameter disk, 5: connected cylinder, 6: slide member, 7: first displacement transmission unit, 8 : Ring-shaped elastic member, 9: second member, 10: base portion, 11: cylindrical portion, 12: second displacement transmitting portion

In order to solve the above-mentioned problem, the omnidirectional three-surface slide support device for a structure according to the present invention has a large-diameter disk and a small-diameter disk fixed to one of the upper structure side and the lower structure side by a connecting column at the center. The connected first member, and the upper surface is disposed between the large-diameter disk and the small-diameter disk of the first member, the upper surface constitutes the lower surface of the large-diameter disk and the first slide portion, and the lower surface is the upper surface of the small-diameter disk. And a plurality of fan-shaped slide members whose outer periphery forms a circular shape at a neutral position in which the second displacement portion is formed and the first displacement transmission portion is formed on the outer periphery and extends to the bottom of the small-diameter disk , and disposed on the outer periphery of the slide member. A ring-shaped elastic member having resilience, a cylindrical shape that is fixed to the other of the upper structure side or the lower structure side and has a smaller diameter than the small diameter disk of the first member, and the upper surface includes a lower surface of the small diameter disk and a third slide portion. And a second member whose outer peripheral portion constitutes the second displacement transmitting portion. The slide of the first slide part, the slide of the second slide part, and the like, to which slide resistance is added by the ring-shaped elastic member arranged on the outer periphery of the slide member with respect to the horizontal displacement in all directions between the upper structure and the lower structure at the time of the earthquake Seismic energy is efficiently attenuated by the frictional resistance caused by the slide of the third slide part.

A first member in which a large-diameter disk and a small-diameter disk fixed to one of the upper structure side or the lower structure side are connected by a connecting column at the center, and the large-diameter disk and the small-diameter disk of the first member; The first displacement transmitting portion is arranged between the upper surface and the lower surface of the large-diameter disk and the first slide portion, and the lower surface forms the upper surface and the second slide portion of the small-diameter disk and extends to the outer periphery to the lower side of the small-diameter disk. Fixed to the other of the upper structure side or the lower structure side, a plurality of fan-shaped slide members whose outer periphery forms a circle at the neutral position where the ring is formed, a ring-shaped elastic member having resilience disposed on the outer periphery of the slide member And a second member having a columnar shape smaller in diameter than the small-diameter disk of the first member, the upper surface constituting the lower surface of the small-diameter disk and the third slide part, and the outer peripheral part constituting the second displacement transmission part, Slide part against relative omnidirectional horizontal displacement between superstructure and substructure during earthquake The slide member efficiently attenuates the seismic energy by the frictional resistance caused by the slide of the first slide part, the second slide part and the slide of the third slide part to which the slide resistance is added by the ring-shaped elastic member arranged on the outer periphery of the slide member. Seismic energy can be efficiently attenuated by the slide through the first slide portion, the second slide portion, and the slide through the third slide portion.
By setting the elastic force of the ring-shaped elastic member to have a displacement limiting function that prevents multiple slide members from sliding more than a predetermined amount due to large displacement during an earthquake, slide resistance is added to the slide member and displacement of the slide member is limited It becomes possible to demonstrate the function.

Claims (2)

A first member in which a large-diameter disk and a small-diameter disk fixed to one of the upper structure side or the lower structure side are connected by a connecting column at the center;
The first member is disposed between the large-diameter disk and the small-diameter disk, the upper surface forms the lower surface of the large-diameter disk and the first slide part, and the lower surface forms the upper surface of the small-diameter disk and the second slide part. A plurality of fan-shaped slide members having a first displacement transmitting portion extending to the bottom of the small-diameter disk on the outer periphery;
A ring-shaped elastic member having resilience disposed on the outer periphery of the slide member;
A columnar shape fixed to the other of the upper structure side or the lower structure side and having a smaller diameter than the small diameter disk of the first member, the upper surface constitutes the lower surface of the small diameter disk and the third slide portion, and the outer peripheral portion is the second displacement transmission portion. A second member comprising:
With
The slide of the first slide part, the slide of the second slide part, and the like, to which slide resistance is added by the ring-shaped elastic member arranged on the outer periphery of the slide member with respect to the horizontal displacement in all directions between the upper structure and the lower structure at the time of the earthquake An omnidirectional three-sided slide support device for a structure, wherein seismic energy is efficiently attenuated by frictional resistance caused by sliding of the third slide portion.   2. The omnidirectional three-surface slide for a structure according to claim 1, wherein the elastic force of the ring-shaped elastic member is set to have a displacement limiting function in which a plurality of slide members do not slide more than a predetermined amount due to a large displacement during an earthquake. Bearing device.

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