JP2017089145A - Slide bearing device for structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a slide bearing for a structure for largely attenuating seismic energy by largely forcedly deforming an elastic bearing, together with friction damping by a slide of a slide surface to horizontal displacement of acting in earthquake time.SOLUTION: A slide bearing device comprises an upper shoe 5 fixed to an upper structure 3, a lower shoe 4 fixed to a lower structure 2 and an elastic bearing 8 arranged between the upper shoe and the lower shoe and integrating upper-lower part connection plates 10 and 11 above and below an elastic body 9 and an intermediate part connection plate 12 in an intermediate part of the elastic body, and one of an upper plate and a lower plate is fixed to the upper shoe or the lower shoe, and a slide plate 14 is fixed to the other of the upper plate and the lower plate, and the intermediate part connection plate is formed with a lock part for transmitting displacement in orthogonal one direction by engaging with a displacement transmission part arranged in the upper shoe or the lower shoe for forming a slide plate and a slide surface, and the upper shoe and the lower shoe is arranged with a member for checking the movement in the orthogonal other direction of the slide plate and the intermediate part connection plate.SELECTED DRAWING: Figure 1

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 a slide surface against a horizontal displacement at the time of an earthquake, and an elastic body. In a slide bearing device for structures that absorbs seismic energy due to deformation, the spring force of the elastic body can be increased without changing the dimensions of the bearing device, and the size of the bearing device can be reduced. Relates to the device.

  After the Hyogoken-Nanbu Earthquake, seismic isolation structures that reduce seismic force and improve seismic resistance through longer periods and higher damping using high-damping rubber-based seismic isolation bearings and laminated rubber bearings with lead plugs are common Has been adopted. As a function-separated type support structure, a case in which a support structure that combines a vertical load support bearing that handles a vertical load and a horizontal force distribution bearing that handles a horizontal force is increasing.

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

JP 2001-140976 A JP 2002-39266 A

  However, in the conventional slide bearing device, the elastic body constituting the elastic bearing may be greatly deformed due to a large displacement during an earthquake, and the elastic body may be 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 support device becomes large and the installation cost increases.

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

  In order to solve the above-mentioned problem, the structure slide support device of the present invention is disposed between an upper arm fixed to the upper structure, a lower arm fixed to the lower structure, and the upper arm and the lower arm, An upper and lower part connecting plate on the upper and lower sides of the elastic body, and an elastic support in which the intermediate part connecting plate is integrated with the middle part of the elastic body, and one of the upper plate and the lower plate is fixed to the upper or lower arm, 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 the upper or lower eyelid forming the slide plate and the slide surface on the intermediate connecting plate, A lock portion for transmitting a displacement in the direction is formed, and members for preventing movement of the slide plate and the intermediate portion connecting plate in the other orthogonal direction are arranged on the upper and lower collars.

  In the structure slide support device of the present invention, the length of the intermediate connecting plate in one orthogonal direction is made longer than the length of the upper and lower connecting plates and the slide plate, and the length in the other orthogonal direction is made up and down. It is longer than the length of the part connecting plate and the slide plate, and a lock part that engages with the displacement transmitting part is formed on both sides of the intermediate part in one direction orthogonal to the intermediate part connecting plate.

  In the structure slide support device of the present invention, the upper part or the lower part to which the elastic support is fixed is brought into surface contact with both side surfaces of the intermediate part connection plate, and the intermediate part connection plate moves in one orthogonal direction. A block member that guides and prevents movement in the other orthogonal direction is arranged.

  Further, in the structure slide support device of the present invention, a pair of displacement transmission portions are disposed on the upper rod or the lower rod, and the pair of displacement transmission portions are in surface contact with both side surfaces of the slide plate. It is characterized by guiding movement in one orthogonal direction and preventing movement in the other orthogonal direction.

An upper arm fixed to the upper structure, a lower arm fixed to the lower structure, and an upper portion of the upper and lower connecting plates and an intermediate portion of the elastic body between the upper arm and the lower arm. An elastic bearing integrated with a connecting plate, one of the upper plate and the lower plate is fixed to an upper or lower plate, a slide plate is fixed to the other of the upper plate and the lower plate, and the intermediate plate A locking portion that engages with a displacement transmitting portion disposed on an upper or lower collar that forms the slide surface with the slide plate is formed on the portion connecting plate, and transmits a displacement in one orthogonal direction. By arranging a member that prevents the slide plate and the intermediate connection plate from moving in the other direction perpendicular to each other, the horizontal displacement during an earthquake is forcibly transmitted to the intermediate connection plate via the displacement transmission unit. The Compared to the case where the elastic body separated vertically by the intermediate connecting plate is deformed in the same direction and the displacement is transmitted to one of the upper and lower sides of the elastic body of the same size, the spring force of the elastic body is greatly enhanced. It is possible to reduce the size.
The length of one direction perpendicular to the middle connection plate is longer than the length of the upper and lower connection plates and the slide plate, and the length of the other perpendicular direction is longer than the length of the upper and lower connection plates and the slide plate. By forming a lock portion that engages with the displacement transmitting portion on both side portions of the intermediate portion in one direction orthogonal to the portion connecting plate, the displacement transmitting portion is directly connected to the intermediate plate in which the upper and lower elastic members are integrated. The horizontal displacement at the time of earthquake is transmitted, so the elastic body separated vertically by the intermediate connecting plate is deformed in the same direction and the displacement is transmitted to the top and bottom of the elastic body of the same size compared to the elastic spring The force is greatly increased, and the bearing device can be downsized.
A block member that is in surface contact with both side surfaces of the intermediate coupling plate on the upper or lower collar to which the elastic bearing is fixed, guides the movement of the intermediate coupling plate in one orthogonal direction, and blocks the movement in the other orthogonal direction It becomes possible to ensure the movement of one direction orthogonal to the middle part connection plate at the time of the earthquake.
A pair of displacement transmission members are arranged on the upper or lower collar, and the pair of displacement transmission 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 orthogonal direction during an earthquake.

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

  A lower collar 4 is fixed to the lower structure 2 by anchor bolts 6. An upper collar 5 is fixed to the upper structure 3 by a set bolt 7. An elastic bearing 8 is disposed between the lower rod 4 and the upper rod 5. The elastic support 8 is formed by integrating an upper connecting plate 10 at the upper part of the elastic body 9, a lower connecting plate 11 at the lower part, and an intermediate connecting plate 12 at the 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 and the lower collar 4 of the elastic bearing 8 are fixed by connecting bolts 13. A 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 hook 4, but the upper connecting plate 10 may be fixed to the upper hook 5 and the slide plate 14 may be fixed to the lower connecting plate 11.

  2A and 2B are a top view and a side view showing an embodiment of the lower eyelid 4, respectively. A plurality of anchor bolt insertion holes 4a and connection bolt insertion holes 4b are formed in the lower collar 4. The four corners of the lower collar 4 come into contact with the side surface of the intermediate connection plate 12 to guide the movement of the intermediate connection plate 12 in one orthogonal direction (hereinafter referred to as “X direction”) and the other orthogonal direction. A block member 4c for preventing the movement of is disposed. The height of the upper end surface of the block member 4 c is in contact with the lower surface of the upper collar 5. The distance between the Y directions of the block members 4c and 4c is set to L1.

  3A and 3B are a side view and a top view showing an embodiment of the upper collar 5. A plurality of set bolt insertion holes 5 a are formed in the upper collar 5. A displacement transmitting portion 5b is formed at the center of both sides extending in the X direction of the upper collar 5. The displacement transmission part 5 b engages with a lock part 12 c formed on the intermediate part connection plate 12 described later, and transmits the displacement in the X direction to the intermediate part connection plate 12. The distance L3 in the Y direction between the displacement transmitting portions 5b and 5b is substantially the same as the distance L4 in the Y direction of the slide plate 14, and functions 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.

  4A and 4B are a top view and a side view showing an embodiment of the elastic bearing 8, respectively. The elastic support 8 has an upper connecting plate 10 disposed on an upper portion of an elastic body 9, a lower connecting plate 11 disposed on a lower portion, and an intermediate connecting plate 12 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 collar 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 collar 5 and the slide plate 14 may be fixed to the lower connection plate 11.

  The intermediate part connecting plate 12 has a length in the X direction substantially the same as the length of the lower collar 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 set to be substantially the same as the distance L1 in the Y direction between the block members 4c and 4c arranged on the lower collar 4. The block member 4c is in contact with the side surface of the intermediate connection plate 12, guides the movement of the intermediate connection plate 12 in the X direction, and prevents the movement in the Y direction.

  The length in the Y direction of the central portion 12b in the X direction of the intermediate connecting plate 12 is longer than the length in the Y direction of the side end portions 12a, and the displacement transmitting portions 5b, 5b formed on the upper collar 5 at the central portion 12b; An engaging lock portion 12c is formed. The displacement transmitting portion 5 b is engaged with a lock portion 12 c 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 in the Y direction of the slide plate 14 fixed to the upper connecting plate 10 is substantially the same as the distance L3 between the displacement transmitting portions 5b and 5b formed on the upper collar 5. The displacement transmission parts 5b and 5b contact the side surface of the slide plate 14, guide the movement of the slide plate 14 in the X direction, and prevent the movement of 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 support device 1 during an earthquake. The horizontal displacement in the direction of the arrow of the upper structure 3 is transmitted to the intermediate portion connecting plate 12 by the engagement between the displacement transmitting portion 5b of the upper collar 5 fixed to the upper structure 3 and the lock portion 12c of the intermediate portion connecting plate 12. . An elastic body 9 and a lower connecting plate 11 are integrated with the lower part of the intermediate connecting plate 12. An elastic body 9 and an upper connecting plate 10 are integrated on the upper part of the intermediate connecting plate 12.

  The lower connection plate 11 is fixed to the lower collar 4 via a connection bolt 13. The upper connecting plate 10 has a slide plate 14 fixed via a fixing bolt 15, and a slide surface is formed between the slide plate 14 and the upper collar 5. Due to the horizontal displacement in the direction of the arrow transmitted to the intermediate portion connecting plate 12, the intermediate portion connecting plate 12 is guided by the block member 4c disposed on the lower rod 4 and moves in the X direction. At that time, the block member 4c is prevented from moving in the Y direction. As the intermediate portion connecting plate 12 moves in the direction of the arrow, an elastic body 9 integrated with the lower portion of the intermediate portion connecting plate 12 and fixed to the lower structure 2 and an elastic body 9 fixed to the upper portion of the intermediate portion connecting plate 12 are provided. Deform in the same direction. Since the elastic body 9 separated and fixed by the intermediate connecting plate is deformed in the same direction, the spring force of the elastic body 9 is significantly larger than when the displacement is transmitted to one of the upper and lower sides of the elastic body of the same size. This increases the size of the bearing device.

  Further, 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 rod 5. The slide of the slide plate 14 is guided by the displacement transmitting portion 5b disposed on the upper collar 5 and slides in the X direction. At that time, the displacement transmitting portion 5b prevents the slide plate 14 from sliding in the Y direction. The seismic energy is attenuated by frictional attenuation caused by sliding through the slide surface between the slide plate 14 and the upper arm 5.

  As described above, according to the slide support device 1 for a structure of the present invention, horizontal displacement is directly transmitted to the intermediate connecting plate 12 in which the elastic body 9 is integrated vertically, so that it is separated vertically by the intermediate connecting plate. Thus, the spring force of the elastic body 9 is greatly increased compared to the case where the fixed elastic body 9 is deformed in the same direction and the displacement is transmitted to one of the upper and lower sides of the elastic body of the same size, thereby reducing the size of the support device. It becomes possible to plan.

  1: slide support device for structure, 2: lower structure, 3: upper structure, 4: lower rod, 4a: anchor bolt insertion hole, 4b: connecting bolt insertion hole, 4c: block member, 5: upper rod, 5a: Set bolt insertion hole, 5b: Displacement transmission portion, 6: Anchor bolt, 7: Set bolt, 8: Elastic support, 9: Elastic body, 10: Upper connection plate, 11: Lower connection plate, 12: Middle connection plate, 12a: both end portions of the intermediate portion connecting plate, 12b: center portion of the intermediate portion connecting plate, 12c: lock portion, 13: connecting bolt, 14: slide plate, 15: fixing bolt

Claims (4)

An upper arm fixed to the superstructure,
An underarm fixed to the substructure,
An elastic bearing which is arranged between the upper and lower collars, and which integrates an upper and lower connection plate on the upper and lower sides of the elastic body and an intermediate connection plate on the middle of the elastic body;
With
One of the upper plate and the lower plate is fixed to the upper plate or the lower plate, 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 on the intermediate connection plate A lock part that engages with a displacement transmission part arranged on the upper or lower collar and transmits a displacement in one orthogonal direction is formed, and the slide plate and the intermediate connection plate are orthogonal to the upper and lower collars. A member for preventing the movement in the other direction is disposed.   The length of one direction orthogonal to the intermediate portion connecting plate is longer than the length of the upper and lower connecting plates and the slide plate, and the length of the other direction orthogonal to each other is longer than the length of the upper and lower portion connecting plates and the slide plate, 2. The slide support device for a structure according to claim 1, wherein lock portions that engage with the displacement transmitting portion are formed on both side portions of the intermediate portion in one direction orthogonal to the intermediate portion connecting plate.   The upper and lower collars to which the elastic bearings are fixed are in surface contact with both side surfaces of the intermediate part connecting plate to guide the movement of the intermediate part connecting plate in one orthogonal direction and to prevent the other orthogonal direction from moving. The block support device for a structure according to claim 1 or 2, wherein a block member is arranged.   A pair of displacement transmission portions are disposed on the upper or lower collar, and the pair of displacement transmission portions 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 are orthogonal to each other. 4. The structure-supporting slide support device according to claim 1, wherein movement in the other direction is prevented.

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