JP6267457B2 - Three-sided slide support device for structures - Google Patents

Description

  The present invention relates to a three-surface slide bearing device for a structure installed between an upper structure and a lower structure of a structure such as a building or a bridge, and more particularly to a horizontal displacement acting on an upper and lower structure part during an earthquake. The present invention relates to a three-surface slide support device for a structure which absorbs by relative displacement through three slide surfaces via the structure.

  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 problem that the upper and lower structures are displaced relative to the displacement in the horizontal direction, and it is necessary to arrange a stopper or the like for limiting displacement, resulting in a complicated configuration. Was.

  The present invention solves the problems of the prior art, has a simple structure, can be greatly attenuated by sliding of three sliding surfaces against horizontal displacement acting during an earthquake, It is another object of the present invention to provide a three-surface slide support device for a structure that can cope with displacement in the rotational direction.

In order to solve the above-mentioned problems, a three-surface slide support device for a structure according to the present invention is a three-surface slide support device for a structure that is arranged between an upper structure and a lower structure of a structure composed of a building or a bridge. A lower sliding plate fixed to the lower structure side and having an upper surface as a sliding surface, an upper sliding plate fixed to the upper structure side and having a lower surface as a sliding surface, and disposed between the lower sliding plate and the upper sliding plate, and an intermediate plate forming a sliding surface on the upper and lower surfaces, the disposed between the lower sliding plate and the upper sliding plate, and an elastic member formed with the slip surfaces on the upper and lower surfaces, 1 to be fixed parallel to the substructure side with a lower displacement transmitting member in pairs, the upper displacement transmission member of a pair being fixed parallel to a direction perpendicular to the lower displacement transmitting member to the superstructure side, the upper of said intermediate plate and the elastic member Located in That the upper surface of the member forms a first sliding surface in close contact with the lower surface of the upper sliding plate, the underside of the member located on top of said intermediate plate and the elastic member of the intermediate plate and the elastic member of the second slide surface formed in close contact with the upper surface of the member located in a lower portion, the intermediate plate and the resilient underside member located below of the members in close contact with the upper surface of the lower sliding plate 3 slide to form a surface, transmits the horizontal and vertical displacement of the member engaged with the lower structure located at the top of said lower displacement transmission member is the intermediate plate and the elastic member, the upper displacement transmission member transmits the horizontal and vertical displacement of the member engaged with the upper structure located in the lower portion of said intermediate plate and the elastic member, with respect to horizontal displacement acting on the earthquake, three sides The Absorb relative displacement as ride surface, the elastic member and wherein the absorbing elastically deformed with respect to the vertical direction and in the rotational direction displacement.

  The three-surface slide support device for a structure according to the present invention is characterized in that the friction coefficients of the three slide surfaces are set to be the same or different.

  The three-surface slide support device for a structure according to the present invention is characterized in that a friction coefficient of the three slide surfaces is 0.01 to 0.5.

  In the three-surface slide support device for a structure of the present invention, the elastic member is formed integrally with upper and lower connecting steel plates above and below the rubber, and a shear restraining member that restrains shear deformation is disposed between the upper and lower connecting steel plates. Features.

Further, the three-surface slide support device for a structure according to the present invention includes an engagement portion having a U-shaped cross section formed at each end of each of the intermediate plate and the elastic member, and the upper displacement transmission member and the lower displacement transmission member. The upper displacement transmission member having a rectangular cross section is configured such that the upper displacement transmission member and the lower displacement transmission member having a rectangular cross section are engaged with the engagement portion having a U-shaped cross section so that the horizontal displacement can be transmitted. A horizontal flange portion is formed on both side walls of the member and the lower displacement transmission member , and displacement in the vertical direction can be transmitted via a contact portion between the horizontal flange portion and the engagement portion having the U-shaped cross section. Features.

Further, the three-surface slide support device for a structure of the present invention includes a U-shaped engagement groove having a closed end formed on the upper displacement transmission member and the lower displacement transmission member , and the intermediate plate and the elastic member. Engagement portions having a rectangular cross section are formed at both ends, and the intermediate plate having a rectangular cross section and the both end engagement portions of the elastic member are engaged with the engagement grooves having a U-shaped cross section to enable horizontal displacement transmission. Further, it is possible to transmit displacement in the vertical direction through a contact portion between the engagement groove tip closed with the tip closed and the engagement portion having the rectangular cross section .

A three-surface slide support device for a structure, which is arranged between an upper structure and a lower structure of a structure consisting of a building or a bridge, and is fixed to the lower structure side and has a lower sliding plate whose upper surface is a sliding surface, an upper sliding plate the lower surface is fixed to the structure side and the sliding surface, is arranged between the lower sliding plate and the upper sliding plate, the intermediate plate forming a sliding surface on the upper and lower surfaces, said upper sliding plate and the lower sliding plate disposed between the upper and lower surfaces in the slip elastic to form the surface member, a direction perpendicular to the pair lower displacement transmission member that is fixed parallel to the substructure side, and the lower displacement transmitting member to the superstructure side and an upper displacement transmission member of a pair being fixed parallel to the said intermediate plate and the elastic first slide surface upper surface of the member located at the top in close contact with the lower surface of the upper sliding plate of the member Formed, to form the intermediate plate and the second sliding surface in close contact with the upper surface of member located below of the lower surface of the member positioned above said intermediate plate and said elastic member of said elastic member, It said intermediate plate and said lower surface member located below of the elastic member to form a third slide surface in close contact with the upper surface of the lower sliding plate, the lower displacement transmission member of the intermediate plate and the elastic member horizontal and vertical displacement transmitted, member engage with the upper displacement transmission member is positioned in the lower portion of said intermediate plate and the elastic member of the member engaged with the lower structure located in the upper the horizontal and vertical displacement of the superstructure and transmitted, with respect to displacement in the horizontal direction acting on the earthquake, the three surfaces to absorb relative displacement as a slide surface, pairs to the displacement of the vertical direction and the rotational direction By elastically deforming and absorbing the elastic member, it is possible to provide a three-surface slide support that is simple in structure and easy to assemble and install, and that has three slide surfaces against horizontal displacement during an earthquake. The seismic energy can be efficiently attenuated by the friction caused by the slide, and it is possible to attenuate the displacement in the vertical direction and the rotational direction by elastic deformation of the elastic member.
By setting the friction coefficient of the three slide surfaces to be the same or different, the friction coefficient of the three slide surfaces can be set freely to control the attenuation performance of the seismic energy due to the friction force of each slide surface. It becomes possible.
By setting the friction coefficient of the three slide surfaces to 0.01 to 0.5, it becomes possible to smoothly slide the three slide surfaces in the horizontal direction.
By forming the elastic members integrally with the upper and lower connecting steel plates on the top and bottom of the rubber, arranging the shear restraint member that penetrates the rubber between the upper and lower connecting steel plates, and forming a laterally expandable space at both ends of the rubber The shear restraining member prevents shear deformation of the elastic member due to the three-surface slide, and allows the rubber to expand laterally, so that the rubber can be elastically deformed and absorbed with respect to the rotational force. An engagement portion having a U-shaped cross section is formed at each end of each of the intermediate plate and the elastic member, the upper displacement transmitting member and the lower displacement transmitting member are formed in a rectangular shape, and a cross-section is formed in the U-shaped engaging portion. The rectangular upper displacement transmission member and the lower displacement transmission member are engaged to enable horizontal displacement transmission, and horizontal flange portions are provided on both side walls of the distal end of the rectangular upper displacement transmission member and the lower displacement transmission member. Forming The displacement in the horizontal direction, the vertical direction, and the rotation direction during an earthquake can be transmitted with a simple configuration by enabling transmission of the displacement in the vertical direction via the contact portion between the horizontal flange portion and the engagement portion having the U-shaped cross section. Can be transmitted.
The upper displacement transmission member and the lower displacement transmission member are formed with U-shaped engaging grooves with closed ends, and the intermediate plate and the elastic member are formed with engaging portions having a rectangular cross section at both ends, a U-shaped cross section said cross section rectangular to the engaging groove intermediate plate and engages the both end engaging portion of the elastic member to allow the horizontal displacement transmission of the tip closed engaging groove tip and of the rectangular cross section By making it possible to transmit displacement in the vertical direction via the contact portion with the engaging portion, it is possible to transmit displacement in the horizontal direction, vertical direction, and rotation direction during an earthquake with a simple configuration.

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

  An embodiment of a three-surface slide support device 1 for a structure of the present invention will be described with reference to the drawings. FIG. 1 is a side view seen from one direction of a three-surface slide support device 1 for a structure of the present invention, and FIG. 2 is a side view seen from a right angle direction of one direction.

  The three-surface slide support device 1 for a structure is disposed between the lower structure 2 and the upper structure 3. A base plate 4 is fixed to the lower structure 2 with fixing bolts 5. A lower sliding plate 6 whose upper surface is a sliding surface is fixed on the base plate 4. A low friction material such as tetrafluoroethylene or polished stainless steel is disposed on the sliding surface of the lower sliding plate 6. The lower sliding plate 6 may be directly fixed to the lower structure 2.

  An upper sliding plate 7 having a lower surface as a sliding surface is fixed to the upper structure 3 by a set bolt 8. A low friction material such as tetrafluoroethylene or polished stainless steel is disposed on the sliding surface of the upper sliding plate 7.

  As shown in FIGS. 3A, 3B, and 3C, a pair of lower displacement transmission members 9 are fixed on the lower sliding plate 6 of the base plate 4 with a predetermined interval in parallel with each other, such as bolts or welding. Fixed by means. The lower displacement transmission member 9 may be directly fixed to the base plate 4. In this embodiment, the lower displacement transmission member 9 is a member having a rectangular cross section having a length L1 in the width direction. A flange portion 9a extending horizontally from both side wall portions of the tip of the lower displacement transmission member 9 having a rectangular cross section is formed.

  In the embodiment shown in FIGS. 4A, 4B, and 4C, the lower displacement transmission member 9 is a U-shaped member having an engagement groove 9b having a closed end with a width L2.

  As shown in FIGS. 5A, 5B, and 5C, the upper sliding plate 7 fixed to the upper structure 3 by the set bolt 8 has a predetermined interval parallel to each other in the direction orthogonal to the lower displacement transmission member 9. The pair of upper displacement transmission members 10 are opened and fixed by fixing means such as bolts or welding. The upper displacement transmission member 10 may be directly fixed to the upper structure 3. In this embodiment, the upper displacement transmitting member 10 is a member having a rectangular cross section having a length L3 in the width direction. A flange portion 10a extending horizontally from both side walls of the tip of the upper displacement transmission member 10 having a rectangular cross section is formed.

  In the embodiment shown in FIGS. 6A, 6B, and 6C, the upper displacement transmission member 10 is a U-shaped member having an engagement groove 10b having a closed end with a width L4.

  FIGS. 7A and 7B are views showing the intermediate sliding plate 11 disposed between the upper sliding plate 7 and the lower sliding plate 6. The upper and lower surfaces of the intermediate sliding plate 11 are sliding surfaces, and a low friction material such as tetrafluoroethylene or polished stainless steel is disposed. In the embodiment shown in FIG. 7A, engagement portions 11a having a U-shaped cross section having a width L5 are formed at both ends of the intermediate sliding plate 11. The operation of the engagement portion 11a having a U-shaped cross section will be described later. In the embodiment shown in FIG. 7 (b), engaging portions 11b having a rectangular cross section with a width L6 are formed at both ends of the intermediate sliding plate 11. The operation of the engaging portion 11b having a rectangular cross section will be described later.

  FIGS. 8A, 8 </ b> B, and 8 </ b> C are diagrams illustrating the elastic member 12 disposed between the upper sliding plate 7 and the lower sliding plate 6. In the elastic member 12, an upper connecting steel plate 12b and a lower connecting steel plate 12c are integrated on the upper and lower sides of the rubber 12a by vulcanization integrated molding. The rubber 12a is a laminated rubber in which a plurality of reinforcing steel plates and rubber are laminated in the vertical direction. The upper and lower connecting steel plates 12b and 12c are used as sliding surfaces, and a low friction material such as tetrafluoroethylene or polished stainless steel is disposed on the surface. The shear restraining member 12d is fixed by penetrating the rubber 12a between the upper and lower connecting steel plates 12b and 12c. The shear restraining member 12d restrains the displacement of the upper and lower connecting steel plates 12b and 12c constituting the slide surface in accordance with the relative displacement during the earthquake, and prevents the rubber 12a from being damaged by the shearing force applied to the rubber 12a. The shear restraining member 12d may be disposed outside the rubber 12a instead of penetrating the rubber 12a. A concave portion is formed on the side of the rubber 12a so that the rubber 12a can expand laterally by a load. By making the rubber 12a laterally expandable, the rubber 12a can be elastically deformed to follow the displacement in the rotational direction.

  In the embodiment shown in FIG. 8B, engaging portions 12e having a U-shaped cross section with a width L7 are formed at both ends of the upper and lower connecting steel plates 12b and 12c. The operation of the engagement portion 11a having a U-shaped cross section will be described later. In the embodiment shown in FIG. 8C, engagement portions 12f having a rectangular cross section with a width L8 are formed at both ends of the upper and lower connecting steel plates 12b and 12c. The operation of the engaging portion 11f having a rectangular cross section will be described later.

  9A and 9B, a state in which the intermediate slide plate 11 and the elastic member 12 are disposed between the lower slide plate 6 and the upper slide plate 7 will be described. The intermediate sliding plate 11 and the elastic member 12 may be arranged in any vertical position, but the upper and lower sliding surfaces are arranged so that the upper sliding plate 7, the lower sliding plate 6 and the sliding surfaces are in close contact with each other. Of the elastic members 12, the lower member is engaged with the upper displacement transmission member 10, and the upper member is engaged with the lower displacement transmission member 9. In this embodiment, the intermediate sliding plate 11 is arranged below. The lower intermediate sliding plate 11 has engaging portions 11 a and 11 b at both ends thereof engaged with the upper displacement transmission member 10.

  In the case of the U-shaped engaging portion 11a having the width L5 of the intermediate sliding plate 11, as shown in FIG. 9A, the upper portion of the rectangular section having the same width L3 as the width L5 of the engaging portion 11a having the U-shaped cross section. It engages with the displacement transmitting member 10 to transmit displacement in all horizontal directions, and abuts against the flange portion 10a to transmit vertical force. As shown in FIG. 9B, in the case of a rectangular engaging portion 11b having a width L6 projecting from the intermediate sliding plate 11, the upper displacement transmission 10 is engaged with the tip of the width L4 substantially the same as the width L6 closed. The horizontal displacement is transmitted by engaging with the groove 10b, and the vertical displacement is transmitted by contacting the closed tip.

  The elastic member 12 positioned on the intermediate sliding plate 11 is engaged with the lower displacement transmission member 9 at the engaging portions 12 e and 12 f at both ends thereof. As shown in FIG. 9A, in the case of the engagement portion 12e having a U-shaped cross section of the elastic member 12 having a width L7, the elastic member 12 is engaged with the lower displacement transmission 9 having a rectangular cross section having the same width L1 as the width L7. The displacement in the direction is transmitted, and the displacement in the vertical direction is transmitted in contact with the flange portion 9a. As shown in FIG. 9B, in the case of the rectangular engaging portion 12f protruding from the elastic member 12 having the width L8, the engaging groove of the lower displacement member 9 having the closed end portion having the same width L2 as the width L8 is closed. 9b is engaged to transmit the displacement in the horizontal direction, and contact the closed tip portion to transmit the displacement in the vertical direction.

  The operation of the three-surface slide support device 1 for a structure of the present invention will be described. With respect to the horizontal displacement at the time of an earthquake, the sliding of the upper sliding plate 7 and the sliding surface of the upper connecting steel plate 12b of the elastic member 12, the sliding surface of the lower connecting steel plate 12c of the elastic member 12 and the upper surface of the intermediate sliding plate 11 The sliding with the sliding surface and the three surfaces of the sliding surface on the lower surface of the intermediate sliding plate 11 and the lower sliding plate 6 slide and absorb. As shown in FIGS. 9A and 9B, the width of the intersecting intermediate slide plate 11 is made smaller than the interval between the lower displacement transmission members 9 and 9, and the width of the elastic member 12 is made higher. When the distance is smaller than the interval, the three slide surfaces can slide in all horizontal directions.

  As shown in FIG. 10A, the width of the intermediate sliding plate 11 is made the same as the interval between the lower displacement transmission members 9, 9, and the width of the elastic member 12 is smaller than the interval between the upper displacement transmission members 10, 10. Then, the movement in the Y-Y direction is prevented, and it is possible to slide only in one direction in the XX direction. As shown in FIG. 10 (b), if the width of the intermediate sliding plate 11 is smaller than the interval between the lower displacement transmission members 9, 9 and the width of the elastic member 12 is the same as the interval between the upper displacement transmission members 10, 10. , Movement in the XX direction is prevented, and only one direction in the YY direction can slide. In the case of unidirectional sliding, a side block may be disposed on the side of the intermediate sliding plate 11 or the elastic body 12 to restrict movement in the X direction or the Y direction.

  For vertical downward or upward displacement, the abutting portions of the flanges 9a and 10a and the engaging portions 11a and 12e having a U-shaped cross section or the engaging portions 11b and 12f of the rectangular protrusions are closed. Then, it is transmitted to the upper structure 3 and the lower structure 2 through contact portions with the engagement grooves 9b and 10b having a U-shaped cross section.

  For displacement in the rotational direction, the abutting portions of the flanges 9a and 10a and the engaging portions 11a and 12e having a U-shaped cross section, or the engaging portions 11b and 12f of the rectangular protrusions and the U-shaped cross-section closed. Are transmitted to the rubber 12a of the elastic member 12 through the contact portions with the engaging grooves 9b and 10b, and the rubber 12a follows and absorbs. The rigid member may follow and absorb the displacement in the rotational direction.

The friction coefficient of the sliding surfaces constituting the three sliding surfaces is made as small as possible. Therefore, the friction surface of the three slide surfaces is set to 0.01 to 3 by installing a low friction material such as polished stainless steel or ethylene tetrafluoride with a small friction coefficient on the slide surface constituting the slide surface. 0.5. By reducing the friction coefficient of the three slide surfaces, it is possible to smoothly slide the three slide surfaces against the horizontal displacement during the earthquake and absorb the earthquake energy.

  The friction coefficients of the three slide surfaces may be the same within a range of 0.01 to 0.5, or the friction coefficients of the slide surfaces may be set differently. By freely setting the friction coefficient of each sliding surface, it becomes possible to control the attenuation performance of the seismic energy due to the frictional force of each sliding surface.

  As described above, according to the three-surface slide bearing device for a structure of the present invention, it is possible to provide a three-surface slide bearing that has a simple structure and is easy to assemble and install. Thus, the seismic energy can be efficiently attenuated by the friction caused by the sliding of the three sliding surfaces, and the elastic member or the rigid member can follow and absorb the vertical support and the rotational support.

  1: Three-surface slide support device for structure, 2: Lower structure, 3: Upper structure, 4: Base plate, 5: Fixing bolt, 6: Lower sliding plate, 7: Upper sliding plate, 8: Set bolt, 9: Lower Displacement transmission member, 9a: flange portion, 9b: engagement groove, 10: upper displacement transmission member, 10a: flange portion, 10b: engagement groove, 11: intermediate sliding plate, 11a: engagement portion, 11b: engagement portion , 12: elastic member, 12a: rubber, 12b: upper connecting steel plate, 12c: lower connecting steel plate, 12d: shear restraining member, 12e: engaging portion, 12f: engaging portion, 13: elastic material

Claims (6)

A three-surface slide support device for a structure arranged between an upper structure and a lower structure of a structure consisting of a building or a bridge,
A lower sliding plate fixed on the lower structure side and having an upper surface as a sliding surface;
An upper sliding plate fixed to the upper structure side and having a lower surface as a sliding surface;
An intermediate plate that is arranged between the lower sliding plate and the upper sliding plate and has sliding surfaces on the upper and lower surfaces;
Wherein disposed between the lower sliding plate and the upper sliding plate, and an elastic member formed with a surface sliding on the upper and lower surfaces,
A pair of lower displacement transmission members fixed in parallel to the lower structure side;
A pair of upper displacement transmission members fixed in parallel to a direction perpendicular to the lower displacement transmission member on the upper structure side;
With
The upper surface of the intermediate plate and member positioned above the inside of the elastic member forms a first sliding surface in close contact with the lower surface of the upper sliding plate is positioned on top of said intermediate plate and the elastic member the lower surface of the member the underside of the member is the intermediate plate and the forming the second slide surface in close contact with the upper surface of member located below of the resilient member, positioned below of said intermediate plate and the elastic member There was formed a third slide surface in close contact with the upper surface of the lower sliding plate, horizontal member engaged with the lower structure located at the top of said lower displacement transmission member is the intermediate plate and the elastic member and transmitting the vertical displacement, the upper displacement transmission member transmits the horizontal and vertical displacement of the member engaged with the upper structure located in the lower portion of said intermediate plate and the elastic member A structure in which a horizontal displacement acting during an earthquake is absorbed by relative displacement using three surfaces as a slide surface, and an elastic member is elastically deformed and absorbed by displacement in a vertical direction and a rotation direction. Three-sided slide support device.   The three-surface slide bearing device for a structure according to claim 1, wherein the friction coefficients of the three slide surfaces are set to be the same or different.   The three-surface slide bearing device for a structure according to claim 1 or 2, wherein a friction coefficient of the three slide surfaces is 0.01 to 0.5.   The elastic member is formed integrally with upper and lower connecting steel plates above and below the rubber, a shear restraining member that penetrates the rubber is disposed between the upper and lower connecting steel plates, and a laterally expandable space is formed at both ends of the rubber. The three-surface slide support device for structures according to any one of claims 1 to 3. An engagement portion having a U-shaped cross section is formed at each end of each of the intermediate plate and the elastic member, the upper displacement transmission member and the lower displacement transmission member are formed in a rectangular shape, and the engagement portion having the U-shaped cross section is formed. The upper displacement transmission member having the rectangular cross section and the lower displacement transmission member are engaged to transmit horizontal displacement, and a horizontal flange portion is provided on both side walls of the distal end of the upper displacement transmission member and the lower displacement transmission member having the rectangular cross section. The vertical displacement can be transmitted through a contact portion between the horizontal flange portion and the engagement portion having a U-shaped cross section. Three-sided slide support device for structures. The upper displacement transmission member and the lower displacement transmission member are formed with U-shaped engaging grooves with closed ends, and the intermediate plate and the elastic member are formed with engaging portions having a rectangular cross section at both ends, a U-shaped cross section said cross section rectangular to the engaging groove intermediate plate and engages the both end engaging portion of the elastic member to allow the horizontal displacement transmission of the tip closed engaging groove tip and of the rectangular cross section structure for three sides sliding bearing device according to any one of claims 1 to 4, characterized in that it allows vertical displacement transmitted through the contact portion between the engaging portion.

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