JP6678006B2 - Slide bearing device for structures - Google Patents

Description

  The present invention is installed between an upper structure and a lower structure of a structure such as a building, a bridge, etc., and attenuates seismic energy by sliding through a sliding surface against horizontal displacement during an earthquake, and an elastic body. A slide bearing for a structure that absorbs seismic energy due to deformation and that can increase the spring force of an elastic body without changing the size of the bearing, thereby realizing the downsizing of the bearing. Related to the device.

  Since the Hyogoken-Nanbu Earthquake, seismic isolation structures that use seismic isolation bearings of high damping rubber or laminated rubber bearings with lead plugs to reduce seismic force and improve seismic resistance by increasing the period and increasing damping are common. It is being adopted. As a bearing structure of a function separation type, a bearing structure combining a vertical load supporting bearing for bearing a vertical load and a horizontal force distribution bearing for bearing a horizontal force is increasing.

  In addition, as a seismic isolation or seismic isolation bearing device for a structure, an elastic bearing with one of the upper and lower surfaces as a sliding surface is arranged between the upper structure and the lower structure, and acts on the lower structure during an earthquake due to the frictional force of the sliding surface. 2. Description of the Related Art A double-sided slide bearing device for a structure that reduces a horizontal displacement and transmits the same to an upper structure has been proposed.

JP 2001-14076 A JP-A-2002-39266

  However, in the conventional slide bearing device, there is a possibility that the elastic body constituting the elastic bearing is largely deformed by a large displacement during an earthquake, and the elastic body is damaged. In order to cope with a large displacement during an earthquake, it is necessary to increase the size of the elastic body of the elastic bearing. As a result, there is a problem that the size of the bearing device is increased and the installation cost is increased.

  The present invention solves the problems of the prior art, has a simple structure, absorbs horizontal displacement acting during an earthquake by friction damping due to sliding of a sliding surface and elastic deformation of an elastic body of an elastic bearing, and has a dimension. An object of the present invention is to provide a slide support device for a structure that can increase the spring force of an elastic body without changing the size of the support device and reduce the size of the support device.

The structure slide bearing device of the present invention, in order to solve the above problems, an upper shoe fixed to the upper structure, a lower shoe fixed to the lower structure, and disposed between the upper and lower shoes, An elastic support in which an upper and lower connecting plate and an intermediate connecting plate are integrated at an intermediate portion of the elastic body above and below the elastic body, and one of the upper plate and the lower plate is fixed to an upper or lower shoe, A slide plate is fixed to the other of the upper plate and the lower plate, and is engaged with a displacement transmitting portion disposed on an upper shoe or a lower shoe forming a slide surface with the slide plate on the intermediate portion connecting plate. of forming a locking unit for transmitting a direction of displacement, is arranged a member for preventing the orthogonal movement in the other direction of the slide plate and the intermediate portion connecting plate on said shoe and a lower shoe, the intermediate portion connecting the pre The length of one of the orthogonal directions is longer than the length of the upper and lower connection plates and the slide plate, and the length of the other orthogonal direction is longer than the length of the upper and lower connection plates and the slide plate. A locking portion is formed on both sides of the intermediate portion in one direction perpendicular to the plate to engage with the displacement transmitting portion .

  In addition, the structure slide bearing device of the present invention is configured such that the upper shoe or the lower shoe to which the elastic bearing is fixed is brought into surface contact with both side surfaces of the intermediate portion connecting plate to move the intermediate portion connecting plate in one orthogonal direction. It is characterized in that a block member that guides and prevents movement in the other direction orthogonal to the other is arranged.

  Further, in the structure slide bearing device of the present invention, a pair of displacement transmitting portions are arranged on the upper shoe or the lower shoe, and the pair of displacement transmitting portions are in surface contact with both side surfaces of the slide plate, and It is characterized in that it guides movement in one orthogonal direction and prevents movement in the other orthogonal direction.

An upper shoe fixed to the upper structure, a lower shoe fixed to the lower structure, and a middle part disposed between the upper and lower elastic plates and an intermediate portion between the upper and lower connecting plates and the elastic member. An elastic bearing integrating a connection plate, wherein one of the upper plate and the lower plate is fixed to an upper shoe or a lower shoe, and a slide plate is fixed to the other of the upper plate and the lower plate; A lock portion that transmits a displacement in one orthogonal direction by engaging a displacement transmitting portion disposed on an upper shoe or a lower shoe forming a slide surface with the slide plate is formed on a portion connecting plate, and the upper shoe and the lower shoe are formed. place a member for preventing the movement of the other direction the perpendicular of the slide plate and the intermediate portion connecting plate shoe, the intermediate portion connecting plate length orthogonal one direction upper and lower connection plate and the slide The length is longer than the length of the rate, the length in the other orthogonal direction is longer than the length of the upper and lower connecting plates and the slide plate, and the displacement is transmitted to both sides of the intermediate portion in the orthogonal direction of the intermediate connecting plate. By forming a lock part that engages with the part, the horizontal displacement during the earthquake is forcibly transmitted to the intermediate part connecting plate via the displacement transmitting part, and the elastic body separated vertically by the intermediate connecting plate is in the same direction. the spring force as compared to the elastic member when deformed displaced one above and below the elastic body of the same size are transmitted can be greatly enhanced in, it is possible to reduce the size of the bearing device, the upper and lower elastic member integrally The horizontal displacement at the time of the earthquake is directly transmitted from the displacement transmission section to the intermediate part plate, so the elastic body separated vertically by the intermediate connecting plate is deformed in the same direction and displaced to the top and bottom of the elastic body of the same size Is transmitted The spring force as compared to the elastic member in the case of is greatly enhanced, and it is possible to reduce the size of the bearing apparatus.
A block member that comes into surface contact with the upper or lower shoe to which the elastic bearing is fixed, on both sides of the intermediate connecting plate to guide the movement of the intermediate connecting plate in one orthogonal direction and to prevent the movement in the other orthogonal direction. By arranging, it is possible to surely move the intermediate connecting plate in one of the orthogonal directions during an earthquake.
A pair of displacement transmitting members are arranged on the upper shoe or the lower shoe, and the pair of displacement transmitting members are in surface contact with both side surfaces of the slide plate to guide the movement of the slide plate in one orthogonal direction and in the other orthogonal direction. By preventing the movement, it is possible to ensure the movement of the slide plate in one direction orthogonal to the time of the earthquake.

It is a figure showing an embodiment of the present 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 is a longitudinal sectional view showing one embodiment of the present invention.

  The lower shoe 4 is fixed to the lower structure 2 by the anchor bolt 6. The upper shoe 5 is fixed to the upper structure 3 by the set bolt 7. An elastic bearing 8 is arranged between the lower shoe 4 and the upper shoe 5. The elastic bearing 8 is formed by integrating an upper connecting plate 10 on an elastic body 9, a lower connecting plate 11 on a lower part, and an intermediate connecting plate 12 on an intermediate part by vulcanization molding. The elastic body 9 is a laminated rubber, a high damping rubber, or the like.

  The lower connecting plate 11 of the elastic bearing 8 and the lower shoe 4 are fixed by connecting bolts 13. The slide plate 14 is fixed to the upper connecting plate 10 by fixing bolts 15. In this embodiment, the lower connecting plate 11 is fixed to the lower shoe 4, but the upper connecting plate 10 may be fixed to the upper shoe 5, and the slide plate 14 may be fixed to the lower connecting plate 11.

  FIGS. 2A and 2B are a top view and a side view showing an embodiment of the lower shoe 4. In the lower shoe 4, a plurality of anchor bolt insertion holes 4a and a plurality of connection bolt insertion holes 4b are formed. The four corners of the lower shoe 4 are in contact with the side surfaces of the intermediate connecting plate 12 to guide the movement of the intermediate connecting plate 12 in one orthogonal direction (hereinafter referred to as “X direction”) and the other orthogonal direction. The block member 4c for preventing the movement of the block is arranged. The height at which the upper end surface of the block member 4c contacts the lower surface of the upper shoe 5 is set. Let L1 be the distance between the block members 4c and 4c in the Y direction.

  FIGS. 3A and 3B are a side view and a top view showing an embodiment of the upper shoe 5. In the upper shoe 5, a plurality of set bolt insertion holes 5a are formed. A displacement transmitting portion 5b is formed at the center of both sides of the upper shoe 5 extending in the X direction. The displacement transmitting portion 5b is engaged with a lock portion 12c formed on the intermediate portion connecting plate 12, which will be described later, and transmits a displacement in the X direction to the intermediate portion connecting plate 12. The distance L3 between the displacement transmitting portions 5b and 5b in the Y direction is substantially the same as the distance L4 in the Y direction of the slide plate 14, and serves as a guide for the movement of the slide plate 14 in the X direction and the movement of the slide plate 14 in the Y direction. Has the function of blocking.

  FIGS. 4A and 4B are a top view and a side view showing one embodiment of the elastic bearing 8. In the elastic bearing 8, an upper connecting plate 10 is disposed on an upper portion of an elastic body 9, a lower connecting plate 11 is disposed on a lower portion, and an intermediate connecting plate 12 is disposed on an intermediate portion. The elastic body 9, the upper connecting plate 10, the lower connecting plate 11, and the intermediate connecting plate 12 are integrated by vulcanization molding.

  The lower connecting plate 11 is fixed to the lower shoe 4 via a connecting bolt 13, and the slide plate 14 is fixed to the upper connecting plate 10 via a fixing bolt 15. The upper connection plate 10 may be fixed to the upper shoe 5, and the slide plate 14 may be fixed to the lower connection plate 11.

  The length of the intermediate connecting plate 12 in the X direction is substantially the same as the length of the lower shoe 4 in the X direction. The length L2 in the Y direction of both end portions 12a in the X direction of the intermediate portion connecting plate 12 is substantially equal to the distance L1 in the Y direction between the block members 4c, 4c arranged on the lower shoe 4. The block member 4c contacts the side surface of the intermediate connecting plate 12, guides the movement of the intermediate connecting plate 12 in the X direction, and prevents the movement in the Y direction.

  The length of the middle portion 12b in the X direction of the middle portion 12b in the Y direction is longer than the length of the both end portions 12a in the Y direction, and the displacement transmitting portions 5b and 5b formed on the upper shoe 5 in the middle portion 12b are formed. An engaging lock portion 12c is formed. The displacement transmitting portion 5b is engaged with a lock portion 12c formed on the intermediate portion connecting plate 12, and transmits the displacement in the X direction to the intermediate portion connecting plate 12.

  The length L4 of the slide plate 14 fixed to the upper connection plate 10 in the Y direction is substantially the same as the distance L3 between the displacement transmitting portions 5b, 5b formed on the upper shoe 5. The displacement transmitting portions 5b, 5b contact the side surfaces of the slide plate 14, guide the slide plate 14 in the X direction, and prevent the slide plate 14 from moving in the Y direction.

  FIGS. 5A and 5B are views showing a state in which a horizontal displacement in the direction of the arrow is applied to the structure slide bearing device 1 during an earthquake. The horizontal displacement of the upper structure 3 in the direction of the arrow is transmitted to the intermediate connecting plate 12 by engagement of the displacement transmitting portion 5b of the fixed upper shoe 5 of the upper structure 3 with the lock portion 12c of the intermediate connecting plate 12. . The elastic body 9 and the lower connecting plate 11 are integrated below the intermediate connecting plate 12. The elastic body 9 and the upper connecting plate 10 are integrated on the upper part of the intermediate connecting plate 12.

  The lower connecting plate 11 is fixed to the lower shoe 4 via a connecting bolt 13. The slide plate 14 is fixed to the upper connection plate 10 via fixing bolts 15, and a slide surface is formed between the slide plate 14 and the upper shoe 5. Due to the horizontal displacement in the direction of the arrow transmitted to the intermediate connecting plate 12, the intermediate connecting plate 12 moves in the X direction while being guided by the block member 4c arranged on the lower shoe 4. At this time, the movement of the block member 4c in the Y direction is prevented. As the intermediate connecting plate 12 moves in the direction of the arrow, the elastic member 9 integrated with the lower portion of the intermediate connecting plate 12 and fixed to the lower structure 2 and the elastic member 9 fixed to the upper portion of the intermediate connecting plate 12 are formed. Deform in the same direction. Since the elastic body 9 fixed vertically separated by the intermediate connecting plate is deformed in the same direction, the spring force of the elastic body 9 is greatly increased as compared with the case where the displacement is transmitted to one of the upper and lower sides of the elastic body of the same size. Thus, the size of the bearing device can be reduced.

  The horizontal displacement of the upper structure 3 in the direction of the arrow slides through the slide surface between the slide plate 14 and the upper shoe 5. The slide of the slide plate 14 is guided by the displacement transmitting portion 5b arranged on the upper shoe 5 and slides in the X direction. At this time, the displacement transmitting section 5b prevents the slide plate 14 from sliding in the Y direction. The seismic energy is attenuated by the frictional attenuation associated with the sliding between the slide plate 14 and the upper shoe 5 via the slide surface.

  As described above, according to the structure slide bearing device 1 of the present invention, since the horizontal displacement is directly transmitted to the intermediate connecting plate 12 in which the elastic body 9 is integrated vertically, the vertical displacement is performed by the intermediate connecting plate. The elastic force of the elastic member 9 is greatly increased as compared with the case where the fixed elastic member 9 is deformed in the same direction and the displacement is transmitted to one of the upper and lower sides of the same elastic member. It becomes possible to plan.

  1: Structure slide bearing device 2: Lower structure 3: Upper structure 4: Lower shoe, 4a: Anchor bolt insertion hole, 4b: Connection bolt insertion hole, 4c: Block member, 5: Upper shoe, 5a: Set bolt insertion hole, 5b: displacement transmitting part, 6: anchor bolt, 7: set bolt, 8: elastic bearing, 9: elastic body, 10: upper connecting plate, 11: lower connecting plate, 12: intermediate connecting plate, 12a: both end portions of the intermediate connecting plate, 12b: central portion of the intermediate connecting plate, 12c: lock portion, 13: connecting bolt, 14: slide plate, 15: fixing bolt

Claims (3)

An upper shoe fixed to the superstructure,
A lower shoe fixed to the lower structure,
An elastic bearing which is disposed between the upper and lower shoes, and integrates an intermediate connecting plate in the middle of the upper and lower connecting plates and the elastic body above and below the elastic body,
With
One of the upper plate and the lower plate is fixed to the upper shoe or the lower shoe, a slide plate is fixed to the other of the upper plate and the lower plate, and the slide plate and the slide surface are formed in the intermediate connection plate. A lock portion that engages with a displacement transmitting portion disposed on the upper shoe or the lower shoe and transmits a displacement in one direction orthogonal to the upper shoe or the lower shoe is formed, and the slide plate and the intermediate portion connecting plate are orthogonal to the upper and lower shoe. A member for preventing movement in the other direction is disposed, and the length of the intermediate portion connecting plate in one direction perpendicular to the length of the intermediate connecting plate is made longer than the length of the upper and lower portion connecting plate and the slide plate, and the length of the other direction perpendicular to the other direction. Are longer than the lengths of the upper and lower connecting plates and the slide plate, and engage with the displacement transmitting portions on both side portions of the intermediate portion in one direction orthogonal to the intermediate portion connecting plate. Structure slide bearing apparatus characterized by forming the locking portion.   The upper shoe or the lower shoe to which the elastic bearing is fixed is in surface contact with both side surfaces of the intermediate portion connecting plate to guide the movement of the intermediate portion connecting plate in one direction orthogonal to the other and to prevent the movement in the other orthogonal direction. The structural slide bearing device according to claim 1, wherein a block member is disposed.   A pair of displacement transmitting portions are arranged on the upper shoe or the lower shoe, and the pair of displacement transmitting portions are in surface contact with both side surfaces of the slide plate to guide movement of the slide plate in one of orthogonal directions, and are orthogonal to each other. The structure according to claim 1 or 2, wherein the movement in the other direction is prevented.

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