JP2018071615A - Structural double-sided slide bearing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structural double-sided slide bearing device which has a simple mechanism and a small number of components so as to facilitate assembly and installation work thereof, significantly reduces horizontal and vertical displacement in all directions on the occurrence of an earthquake, and can deal with lift force.SOLUTION: A structural double-sided slide bearing device for comprises: an upper member 7 which is fixed to a superstructure 3 and has a surface constituting a slide face; a lower member 5 which is fixed to a substructure 2 and has the surface constituting the slide face; upper guide members 8 which are arranged, on the upper member 7, parallel to each other with a predetermined distance therebetween in one of directions orthogonal to each other and have guide sections formed at lower sections thereof extended in the one of the directions orthogonal to each other; lower guide members 6 which has a similar configuration to the upper guide members; and an elastic bearing. An upper connection steel plate 11 has: a surface which constitutes an upper slide section together with the slide face of the upper member 7; and upper engagement sections, at both ends thereof, which allows the same to be moved in the one of the directions orthogonal to each other but does not allow the same to be moved in the other of the directions orthogonal to each other. A lower connection steel plate 12 has the surface which constitutes a lower slide section together with the slide face of the lower member 5 and lower engagement sections, at both ends thereof, which allows the same to be moved in the other of the directions orthogonal to each other but does not allow the same to be moved in the one of the directions orthogonal to each other.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a double-sided slide support device for a structure installed between an upper structure and a lower structure of a structure such as a building or a bridge. In contrast, the present invention relates to a double-sided slide support device for a structure that absorbs by relative displacement via an upper and lower slide surface, and absorbs by compressing and deforming an elastic body against vertical displacement in the vertical direction.

  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 sliding surfaces on both the upper and lower sides 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 upper and lower sliding surfaces. There has been proposed a double-sided slide support device for a structure that reduces horizontal displacement and transmits it to an upper structure.

JP 2001-140976 A JP 2002-39266 A

  Conventional double-sided slide bearings for structures have a structure in which the upper and lower structures are relatively displaced with respect to a displacement in one horizontal direction, and do not correspond to a displacement in all horizontal directions that acts during an earthquake. In addition, it is necessary to dispose a stopper for limiting the displacement, which has a problem of a complicated configuration. In addition, for the vertical vertical displacement acting on the vertical structure during an earthquake, the elastic body compresses and absorbs the vertical downward displacement, but for the vertical upward displacement, A tensile force acts on the elastic body, and an elastic body such as rubber has a tensile allowance, so the area and thickness of the elastic body must be increased in order to cope with the tensile force acting on the elastic body. This is not preferable in the technical field of bearings for structures that are required to be made.

  The present invention solves the problems of the prior art, has a simple structure, uses a small number of parts, and is assembled and installed. It is possible to provide a double-sided slide support device for a structure that is greatly damped and absorbs the elastic body by compressing and deforming against vertical positive and negative displacements acting on the upper and lower structures, and capable of dealing with uplift. Objective.

  In order to solve the above problems, the structure double-sided slide support device of the present invention includes an upper member that is fixed to the upper structure and whose surface forms a slide surface, and a lower member that is fixed to the lower structure and whose surface forms a slide surface. An upper guide member that is arranged in parallel with a predetermined interval facing one direction orthogonal to the upper member, and in which the guide portion in one direction orthogonal to the lower part is formed, and in the other direction orthogonal to the lower member A lower guide member that is arranged in parallel and oppositely spaced at a predetermined interval and formed with a guide portion in the other direction perpendicular to the upper portion, and an elastic bearing in which upper and lower connecting steel plates are fixed above and below the elastic body, The surface of the upper connecting steel plate forms the slide surface and upper sliding part of the upper member, and engages with the guide part in the other direction of the lower slide member at the opposite ends at both ends of the upper connecting steel plate, allowing movement in the other direction orthogonal to each other Shi An upper engaging portion that prevents movement in one direction intersecting is formed, the surface of the lower connecting steel plate forms a sliding surface and a lower sliding portion of the lower member, and one of the upper sliding members is orthogonal to both ends of the lower connecting steel plate A lower engaging portion is formed which engages with the guide portion in the direction and permits movement in the other orthogonal direction and prevents movement in the other orthogonal direction.

  In the structure double-sided slide support device of the present invention, the upper upper lifting force holding member that holds the upper connecting steel plate to the upper guide member is fixed to the lower guide member, and the lower upper lifting force presser to hold the lower connecting steel plate to the upper guide member. The member is fixed.

  In the structure double-sided slide support device of the present invention, the lower guide member is formed with a fitting recess into which the engaging protrusion formed on the upper upper lifting force holding member is fitted, and the upper guide member is provided with the lower upper lifting force holding member. A fitting recess is formed in which the formed engaging projection is fitted.

  Further, the structure double-sided slide support device of the present invention is such that the upper engagement portion of the upper connection steel plate of the elastic support is positioned below the surface of the upper connection steel plate, and the lower engagement portion of the lower connection steel plate is the surface of the lower connection steel plate. It is characterized by being positioned higher.

An upper member that is fixed to the upper structure and whose surface forms a sliding surface, a lower member that is fixed to the lower structure and whose surface forms a sliding surface, and is parallel to each other in a direction perpendicular to the upper member at a predetermined interval. The upper guide member in which the guide portion in one direction perpendicular to the lower part is formed and the other direction perpendicular to the upper part and arranged in parallel with a predetermined interval facing the other direction perpendicular to the lower member A lower guide member in which the guide portion is formed, and an elastic support in which upper and lower connecting steel plates are fixed above and below the elastic body, and the surface of the upper connecting steel plate forms a slide surface and an upper slide portion of the upper member, An upper engagement portion that engages with a guide portion in the other orthogonal direction of the lower slide member at both ends of the upper connecting steel plate, allows movement in the other orthogonal direction, and prevents movement in one orthogonal direction, Of bottom connecting steel plate The surface forms a slide surface and a lower slide part of the lower member, and engages with a guide part in one orthogonal direction of the upper slide member at both ends of the lower connecting steel plate, allowing the movement in the other orthogonal direction and allowing the other to be orthogonal By forming the lower engagement part that prevents the movement in the direction of, seismic energy is attenuated by the friction caused by sliding through the upper and lower sliding parts with respect to the displacement in all horizontal directions with fewer parts and easy assembly and installation. In the event of an earthquake, the displacement in the vertical direction can be absorbed by the compression deformation of the elastic body, and the bearing can be made smaller and thinner.
By fixing the upper lifting force presser member that holds the upper connecting steel plate on the elastic support to the lower guide member, and fixing the lower upper lifting force presser member that holds the lower connecting steel plate on the elastic support to the upper guide member, a simple structure can be used during an earthquake. It becomes possible to cope with the lifting force applied to the structure.
A fitting recess in which an engaging protrusion formed on the upper upper lifting force holding member is fitted to the lower guide member, and an engaging protrusion formed on the lower upper lifting pressure member is fitted to the upper guide member. It becomes possible to endure a large uplift force by forming.
An upper upper lifting force holding member is formed by positioning the upper engaging portion of the upper connecting steel plate below the surface of the upper connecting steel plate and the lower engaging portion of the lower connecting steel plate above the surface of the lower connecting steel plate. And it becomes possible to position the upper lifting force pressing portion of the lower upper lifting force pressing member so as not to interfere with the upper slide portion and the lower slide portion.

It is a figure which shows embodiment of this invention. It is a figure which shows embodiment of this invention. (A) (b) (c) It is a figure which shows embodiment of this invention. (A) (b) (c) It is a figure which shows embodiment of this invention. (A) (b) (c) 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 a double-sided slide support device 1 for a structure according to the present invention will be described with reference to the drawings. FIG. 1 is a side view of a double-sided slide bearing 1 for a structure according to the present invention viewed from one orthogonal direction, and FIG. 2 is a side view viewed from the other orthogonal direction.

  The double-sided slide support device 1 for a structure is disposed between an upper structure 3 and a lower structure 2 of a structure such as a building or a bridge.

  3 (a), 3 (b), and 3 (c) are views showing a lower member 5 fixed to the lower structure 2 by a fixing member 4. The surface of the lower member 5 is a lower slide surface 5a. The pair of lower guide members 6 are arranged in parallel at a predetermined interval so as to face the other orthogonal direction (hereinafter referred to as “Y direction”).

  At the upper end of the lower guide member 6, a Y-direction guide portion 6a having a U-shaped cross section that opens upward is formed. On the side surface of the lower guide portion 6, there are formed a fixing bolt screwed female screw hole 6b and a fitting recess 6c into which an engaging protrusion formed on a lower upper lifting force holding member to be described later is fitted.

  4 (a), 4 (b), and 4 (c) are diagrams showing the upper member 7 fixed to the upper structure 3 by the fixing member 4. The surface of the upper member 7 is an upper slide surface 7a. A pair of upper guide members 8 are arranged in parallel at a predetermined interval so as to face one orthogonal direction (hereinafter referred to as “X direction”).

  At the lower end of the upper guide member 8, an X-direction guide portion 8a having a U-shaped cross section that opens downward is formed. On the side surface of the upper guide member 8, there are formed a fixing bolt screwed female screw hole 8b and a fitting recess 8c into which an engaging protrusion formed on the upper lifting force holding member described later is fitted.

  5A, 5B, and 5C are views showing the elastic bearing 9. FIG. The elastic bearing 9 includes an elastic body 10. Examples of the elastic body 10 include laminated rubber obtained by laminating rubber and a reinforcing steel plate, high-damping rubber, laminated rubber containing a lead plug, and the like. The upper connecting steel plate 11 and the lower connecting steel plate 12 are integrated on the upper and lower sides of the elastic body 10 by vulcanization.

  The upper surface of the upper connecting steel plate 11 is an upper slide surface 11a. A portion extending horizontally in the Y direction from a position below the upper slide surface 11a of the upper connecting steel plate 11 is formed, and upper engaging portions 11b are formed at both ends thereof. The upper engaging portion 11b engages with the Y-direction guide portion 6a of the lower guide member 6, allows the elastic bearing 9 to move in the Y direction, and prevents movement in the X direction. The upper slide surface 11a and the upper engagement portion 11b of the upper connecting steel plate 11 may be formed of an integrated steel plate with different thicknesses, or the upper slide surface 11a and the upper engagement portion 11b are formed by integrating different steel plates. You may do it.

  The lower surface of the lower connecting steel plate 12 is a lower slide surface 12a. A portion extending horizontally in the X direction from a position above the lower slide surface 12a of the lower connecting steel plate 12 is formed, and lower engaging portions 12b are formed at both ends thereof. The lower engagement portion 12b engages with the X-direction guide portion 8a of the upper guide member 8, allows the elastic bearing 9 to move in the X direction, and prevents movement in the Y direction. The lower slide surface 12a and the lower engagement portion 12b of the connecting steel plate 12 may be formed of an integrated steel plate with different thicknesses, or the lower slide surface 12a and the lower engagement portion 12b are formed by integrating different steel plates. May be.

An elastic bearing 9 is provided between the lower member 2 and the upper member 7, and upper and lower engaging portions 11 b and 12 b of the upper and lower connecting steel plates 11 and 12 are connected to the Y direction guide portion 6 a and the X direction guide portion 8 a of the upper and lower guide members 8 and 6. Engage. The upper slide surface 11a of the upper connecting steel plate 11 and the upper slide surface 3a of the upper member 3 form an upper slide portion. The lower slide surface 12a of the lower connecting steel plate 12 and the lower slide surface 5a of the lower member 5 form a lower slide portion.

  FIGS. 6A and 6B are views showing the upper upper lifting force retaining member 13 and the lower upper lifting force retaining member 14. Since the upper upper lifting force holding member 13 and the lower upper lifting force holding member 14 are members of the same shape, they will be described with reference to the same drawing.

  The upper upper lifting force holding member 13 is disposed on the side surface of the upper guide member 8. The upper upper force holding member 13 includes an engaging protrusion 13 a that fits into a fitting recess 8 c formed on the side surface of the upper guide member 8, and a fixing bolt screwed female screw hole 8 b formed in the upper guide member 8. A fixing bolt insertion hole 13b is formed at the matching position. Further, the upper lifting force presser member 13 is formed with an upper lifting force presser portion 13 c that contacts the upper engaging portion 11 b of the upper connecting steel plate 11 engaged with the X-direction guide portion 8 a of the upper guide member 8. After the upper upper lifting force holding member 13 is disposed on the side surface of the upper guide member 8, the fixing bolt 15 is inserted from the fixing bolt insertion hole 13b and screwed into the fixing bolt screwing female screw hole 8b.

  The lower upper lifting force holding member 14 is disposed on the side surface of the lower guide member 6. The lower upper lifting force holding member 14 includes an engaging protrusion 14 a that fits into a fitting recess 6 c formed on a side surface of the lower guide member 6, and a fixing bolt screwed female screw hole 6 b formed in the lower guide member 6. A fixing bolt insertion hole 14b is formed at the matching position. Further, the lower upper lifting force holding member 14 is formed with an upper lifting force pressing portion 14 c that contacts the lower engagement portion 12 of the lower connecting steel plate 12 engaged with the Y-direction guide portion 6 a of the lower guide member 6. After the lower upper lifting force holding member 14 is disposed on the side surface of the lower guide member 6, the fixing bolt 15 is inserted from the fixing bolt insertion hole 14b and screwed into the fixing bolt screwing female screw hole 6b.

  The upper upper lifting force holding member 13 and the lower upper lifting force holding member 14 have a large lifting force due to the fixing by fixing the fixing bolt 15 and the engagement with the fitting recesses 8c and 6c of the vertical engagement protrusions 13a and 14a. It has a structure that can withstand.

  As described above, according to the double-sided slide support device for a structure 1 of the present invention, the number of components is small and assembly and installation are easy, and the seismic energy is generated by friction caused by sliding through the upper and lower sliding portions with respect to displacement in all horizontal directions. In the event of an earthquake, vertical displacement can be absorbed by the compression deformation of the elastic body, and the bearing can be made smaller and thinner. In addition, it is possible to cope with a large lifting force added to the earthquake structure with a simple structure.

  1: Double-sided slide support device for structure, 2: Lower structure, 3: Upper structure, 4: Fixed member, 5: Lower member, 5a: Lower slide surface, 6: Lower guide member, 6a: Y direction guide part, 6b : Fixing bolt screwed female screw hole, 6c: fitting recess, 7: upper member, 7a: upper slide surface, 8: upper guide member, 8a: X direction guide part, 8b: fixed bolt screwed female screw hole, 8c : Fitting recess, 9: elastic bearing, 10: elastic body, 11: upper connecting steel plate, 11a: upper sliding surface, 11b: upper engaging portion, 12: lower connecting steel plate, 12a: lower sliding surface, 12b: lower engaging Joint part, 13: Upper upper lifting force holding member, 13a: Engaging protrusion, 13b: Fixing bolt insertion hole, 13c: Upper lifting force holding part, 14: Lower upper lifting force holding member, 14a: Engaging protrusion, 14b: Fixed Bolt insertion hole, 14c: Upper lifting force holding part, 15: Fixed bolt

Claims (4)

An upper member fixed to the upper structure and whose surface constitutes a sliding surface;
A lower member fixed to the lower structure and whose surface constitutes a sliding surface;
An upper guide member that is arranged in parallel with a predetermined interval facing one direction orthogonal to the upper member and in which a guide portion in one direction orthogonal to the lower part is formed;
A lower guide member that is disposed in parallel with a predetermined interval facing the other direction orthogonal to the lower member and in which a guide portion in the other direction orthogonal to the upper part is formed;
An elastic bearing in which upper and lower connecting steel plates are fixed above and below the elastic body;
With
The surface of the upper connecting steel plate forms the slide surface and upper sliding part of the upper member, and engages with the guide part in the other direction of the lower slide member at the opposite ends at both ends of the upper connecting steel plate, allowing movement in the other direction orthogonal to each other An upper engaging portion that prevents movement in one orthogonal direction is formed, the surface of the lower connecting steel plate forms a sliding surface and a lower sliding portion of the lower member, and the upper sliding member is orthogonal to both ends of the lower connecting steel plate. A double-sided slide bearing device for a structure which forms a lower engaging portion which engages with a guide portion in one direction and allows movement in the other orthogonal direction and prevents movement in the other orthogonal direction.   2. The upper lifting force pressing member for pressing the upper connecting steel plate of the elastic support to the lower guide member is fixed, and the lower lifting force pressing member for pressing the lower connecting steel plate of the elastic support to the upper guide member is fixed. The double-sided slide support device for structures as described.   A fitting recess in which an engaging protrusion formed on the upper upper lifting force holding member is fitted to the lower guide member, and an engaging protrusion formed on the lower upper lifting pressure member is fitted to the upper guide member. The double-sided slide support device for a structure according to claim 2, wherein:   The upper engagement portion of the upper connection steel plate of the elastic bearing is positioned below the surface of the upper connection steel plate, and the lower engagement portion of the lower connection steel plate is positioned above the surface of the lower connection steel plate. 4. A double-sided slide support device for a structure according to any one of items 3 to 3.

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