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CN-118166644-B - Assembled friction type combined support with vertical pulling-resistant function

CN118166644BCN 118166644 BCN118166644 BCN 118166644BCN-118166644-B

Abstract

The invention discloses an assembled friction type combined support with a vertical pulling-resistant function, wherein the slide support comprises a cushion block, an upper friction plate, a smooth plate and an upper pulling-resistant track, the middle slide block is arranged between cambered surfaces of a bottom slide plate and a top slide plate, the bottom slide plate and the top slide plate are respectively arranged on the cambered surfaces of a bottom seat plate and a top seat plate, the cushion block is arranged on the top surface of the top seat plate, the upper friction plate is arranged on the cushion block, the smooth plate is arranged on the upper friction plate, and the upper pulling-resistant track is arranged on two sides of the bottom surface of the smooth plate. According to the invention, under the action of vertical compressive load, the support transmits load through the sliding blocks, the sliding plates and the seat plates, and the anti-pulling rails are not stressed, so that the horizontal friction hysteresis performance is not influenced by the anti-pulling rails, the stress analysis is simpler, and under the action of vertical tensile load, the support transmits load through a layer-by-layer nesting mechanism of the lug plates and the anti-pulling rails, and the overall stability is higher.

Inventors

  • XU LONGHE
  • LI JUN

Assignees

  • 北京交通大学

Dates

Publication Date
20260505
Application Date
20240412

Claims (10)

  1. 1. The assembled friction type combined support with the vertical pulling-resistant function comprises a friction pendulum support at the lower layer and a slide support at the upper layer, and is characterized in that the friction pendulum support comprises a middle sliding block (1), a bottom sliding plate (2), a top sliding plate (3), a base plate (4), a top base plate (5), a first friction plate (6-1), a second friction plate (6-2), a first track (7-1) and a second track (7-2), wherein the slide support comprises a cushion block (8), an upper friction plate (9), a smooth plate (10) and an upper pulling-resistant track (11), the middle sliding block (1) is arranged between cambered surfaces of the bottom sliding plate (2) and the top sliding plate (3), the bottom sliding plate (2) and the top sliding plate (3) are respectively arranged on cambered surfaces of the base plate (4) and the top base plate (5), the cushion block (8) is arranged on the top surface of the top base plate (5), and the upper friction plate (9) is arranged on the cushion block (8), and the smooth plate (10) is arranged on the two sides of the smooth plate (10); The middle sliding block (1) comprises a hexahedral sliding block (1-1) and four first lug plates (1-2), wherein the upper surface and the lower surface of the hexahedral sliding block (1-1) are relatively symmetrical cambered surfaces, the vertical projection of the cambered surfaces is rectangular, the front surface, the rear surface, the left surface and the right surface of the hexahedral sliding block (1-1) are planes, the first lug plates (1-2) are curved plates with square cross sections and fan-shaped longitudinal sections, the first lug plates (1-2) are arranged on the front surface and the rear surface of the hexahedral sliding block (1-1), the outer cambered surfaces of the first lug plates (1-2) are coplanar with the cambered surfaces of the hexahedral sliding block (1-1), and the cambered surfaces have equal radiuses; The bottom sliding plate (2) and the top sliding plate (3) are arc-shaped plates with equal thickness, the upper arc surface and the lower arc surface are parallel to each other, the vertical projection of the arc surfaces is rectangular, the front side, the rear side, the left side and the right side of the bottom sliding plate (2) and the top sliding plate (3) are planes, the left end and the right end of the bottom sliding plate (2) and the right end of the top sliding plate (3) are provided with first stop blocks (23-1), the front end and the rear end of the bottom sliding plate (2) and the rear end of the top sliding plate (3) are provided with second lug plates (23-2), the second lug plates (23-2) are curved plates with square cross sections and fan-shaped longitudinal sections, and the shapes and the sizes of the bottom sliding plate (2) and the top sliding plate (3) are the same; The cambered surfaces of the base plate (4) and the top seat plate (5) are sliding surfaces, the cambered surfaces have equal radiuses, and the vertical projection of the cambered surfaces is rectangular, second stop blocks (45-1) are arranged at the left end and the right end of the base plate (4) and the top seat plate (5), lower connecting plates (4-2) are arranged around the base plate (4), third lug plates (5-2) are arranged on the left side surface and the right side surface of the top seat plate (5), and the third lug plates (5-2) are straight plates with square cross sections; The first track (7-1) and the second track (7-2) are respectively four curved tracks with a cross section of a gamma shape and a longitudinal section of a fan shape, the first track (7-1) is provided with two curved surfaces fixed on the bottom sliding plate (2) and the other two curved surfaces fixed on the top sliding plate (3), the second track (7-2) is provided with two curved surfaces fixed on the base plate (4) and the other two curved surfaces fixed on the top base plate (5), the fixing modes are connected by adopting high-strength bolts, the first track (7-1) and the first lug plate (1-2) are mutually nested, the second track (7-2) and the second lug plate (23-2) are mutually nested, the four first tracks (7-1) are identical in shape and size and are smaller than the lengths of the bottom sliding plate (2) and the top sliding plate (3), and the four second tracks (7-2) are identical in shape and size and are smaller than the lengths of the base plate (4) and the top base plate (5); The two first friction plates (6-1) and the two second friction plates (6-2) are respectively of curved rectangular thin plates, the two first friction plates (6-1) are respectively fixed on the cambered surfaces of the bottom sliding plate (2) and the top sliding plate (3), the two second friction plates (6-2) are respectively fixed on the cambered surfaces of the base plate (4) and the top seat plate (5), the friction coefficients of the two first friction plates (6-1) are equal, the friction coefficients of the two second friction plates (6-2) are equal, and the friction coefficient of the second friction plates (6-2) is 2 to 3 times that of the first friction plates (6-1); The middle sliding block (1) simultaneously performs relative friction sliding on two first friction plates (6-1) along the length direction of a first track (7-1), the sliding displacement capacity is 2 times of the horizontal initial distance between the middle sliding block (1) and the first stop block (23-1), the sliding displacement capacity is 2 times of the horizontal initial distance between the middle sliding block and the first stop block (23-1), the sliding displacement capacity is a first sliding stage, the bottom sliding plate (2) and the top sliding plate (3) simultaneously perform relative friction sliding on two second friction plates (6-2) along the length direction of a second track (7-2), the sliding displacement capacity is 2 times of the horizontal initial distance between the bottom sliding plate (2) and the top sliding plate (3) and the second stop block (45-1), the sliding displacement capacity is a second sliding stage, the displacement capacity of the second sliding stage is 2 to 3 times of the horizontal sliding capacity of the lower friction pendulum support is the sum of the displacement of the first sliding stage and the second sliding stage; The upper friction plate (9) is a round thin plate, the plane size of the upper friction plate is the same as that of the cushion block (8), the upper friction plate (9) is fixed on the top surface of the cushion block (8) and keeps coincident, and the friction coefficient of the upper friction plate (9) is equal to that of the second friction plate (6-2); The sliding plate (10) is arranged on the top seat plate (5) and is isolated by a cushion block (8) and an upper friction plate (9) which are arranged in an overlapping manner, two third check blocks (10-1) are arranged on the central axis of the bottom surface of the sliding plate (10), the two third check blocks (10-1) are in a strip shape and are positioned on two sides of the cushion block (8), the height of the third check blocks (10-1) is smaller than the overlapping height of the cushion block (8) and the upper friction plate (9), fourth check blocks (10-2) which are equal in length and parallel to the third check blocks (10-1) are arranged on the front side surface and the rear side surface of the top seat plate (5), two fourth check blocks (10-2) are arranged on each side surface, the four sides of the sliding plate (10) are arranged with an upper connecting plate (10-3) by adopting high-strength bolts, the two sides of the bottom surface of the sliding plate (10) are provided with upper anti-pulling rails (11), and the upper anti-pulling rails (11) are straight rails with L-shaped cross sections and are nested with the third lugs (5-2) of the top seat plate (5); The smooth plate (10) generates relative frictional sliding on the upper friction plate (9) along the length direction of the upper anti-pulling track (11), and the horizontal sliding capacity of the upper sliding plate support is the horizontal initial distance between the third stop block (10-1) and the fourth stop block (10-2).
  2. 2. The assembled friction type combined support with the vertical pulling-resistant function according to claim 1 is characterized in that effective radiuses of all cambered surfaces in the lower friction pendulum support are equal, wherein all cambered surfaces comprise cambered surfaces of a sliding block (1), a bottom sliding plate (2), a top sliding plate (3), a base plate (4), a top base plate (5), a first friction plate (6-1), a second friction plate (6-2), a first track (7-1) and a second track (7-2) in a part, and the effective radiuses = actual radiuses of cambered surfaces of the part-normal distances from the center of gravity of the sliding block (1) to the cambered surfaces.
  3. 3. The assembled friction type combined support with the vertical pulling-resistant function according to claim 1, wherein the lower friction pendulum support and the upper sliding plate support slide along two directions which are horizontally orthogonal.
  4. 4. The assembled friction type combined support with the vertical pulling-resistant function according to claim 1 is characterized in that the first friction plate (6-1) is arranged between two first rails (7-1) located on the same cambered surface, and the second friction plate (6-2) is arranged between two second rails (7-2) located on the same cambered surface.
  5. 5. The assembled friction type combined support with the vertical pulling-resistant function according to claim 1 is characterized in that the middle sliding block (1) is nested with the bottom sliding plate (2) and the top sliding plate (3) through four first lug plates (1-2) and four first rails (7-1).
  6. 6. The assembled friction type combined support with the vertical pulling-resistant function according to claim 1, wherein the bottom sliding plate (2) and the top sliding plate (3) are nested with the bottom seat plate (4) and the top seat plate (5) through four second lug plates (23-2) and four second rails (7-2).
  7. 7. The assembled friction type combined support with the vertical pulling-resistant function according to claim 1, wherein the smooth plate (10) is nested with the top seat plate (5) through two third lug plates (5-2) and two upper pulling-resistant rails (11).
  8. 8. The assembled friction type combined support with the vertical pulling-resistant function according to one of claims 1 to 7 is characterized in that the vertical pulling-resistant capability of the support is provided by a layer-by-layer nesting mechanism between a first lug plate (1-2) and a first track (7-1), between a second lug plate (23-2) and a second track (7-2), between a third lug plate (5-2) and an upper pulling-resistant track (11), and gaps are reserved among mutually nested parts.
  9. 9. The assembled friction type combined support with the vertical pulling-resistant function according to one of claims 1 to 7 is characterized in that a gap is reserved between the third stop block (10-1) and the top surface of the top seat plate (5), and a gap is reserved between the fourth stop block (10-2) and the bottom surface of the smooth plate (10).
  10. 10. The assembled friction type combined support with the vertical pulling-resistant function according to claim 1, wherein the initial positions of all the parts before sliding are symmetrical with respect to the vertical plane where the central axis of the bottom surface of the base plate (4) is located.

Description

Assembled friction type combined support with vertical pulling-resistant function Technical Field The invention belongs to the technical field of vibration reduction and isolation devices of bridges and building structures, and particularly relates to an assembled friction type combined support with a vertical pulling-resistant function. Background The support is one of important components in the seismic reduction and isolation design of bridges and building structures, and particularly for a large-span bridge structure, the friction pendulum support and the sliding plate support can provide a large horizontal deformation space for the bridge structure so as to dissipate seismic energy suffered by the structure. However, the existing friction pendulum support and sliding plate support do not have the capability of vertical pulling resistance, and cannot bear the lifting effect of the structure under vertical earthquake motion. On the other hand, the seismic response of the structure in the horizontal two directions is not equal due to the characteristics of the structure itself and the difference in horizontal seismic components. Therefore, there is a need for a three-dimensional shock-insulating support that can provide vertical pullout resistance and also meet different deformation requirements in two horizontal directions. In view of the above, the present invention proposes an assembled friction type combined support with vertical anti-pulling function, which aims to solve the above technical problems. Disclosure of Invention The assembled friction type combined support with the vertical pulling-resistant function comprises a friction pendulum support at a lower layer and a slide support at an upper layer, and is characterized in that the friction pendulum support comprises a middle sliding block, a bottom sliding plate, a top sliding plate, a base plate, a top base plate, a first friction plate, a second friction plate, a first track and a second track, wherein the slide support comprises a cushion block, an upper friction plate, a smooth plate and an upper pulling-resistant track, the middle sliding block is arranged between cambered surfaces of the bottom sliding plate and the top sliding plate, the bottom sliding plate and the top sliding plate are respectively arranged on cambered surfaces of the base plate and the top base plate, the cushion block is arranged on the top surface of the top base plate, the upper friction plate is arranged on the cushion block, and the smooth plate is arranged on the upper friction plate; the middle sliding block comprises a hexahedral sliding block and four first lug plates, wherein the upper surface and the lower surface of the hexahedral sliding block are oppositely symmetrical cambered surfaces, the vertical projection of the cambered surfaces is rectangular, the front surface, the rear surface, the left surface and the right surface of the hexahedral sliding block are planes, the first lug plates are curved plates with square cross sections and fan-shaped longitudinal sections, the first lug plates are arranged on the front surface and the rear surface of the hexahedral sliding block, the outer cambered surfaces of the first lug plates are coplanar with the cambered surfaces of the hexahedral sliding block, and the cambered surfaces have the same radius; The bottom slide plate and the top slide plate are arc plates with equal thickness, the upper arc surface and the lower arc surface are parallel to each other, the vertical projection of the arc surfaces is rectangular, the front side, the back side, the left side and the right side of the bottom slide plate and the top slide plate are planes, the left end and the right end of the bottom slide plate and the top slide plate are provided with first stop blocks, the front end and the back end of the bottom slide plate and the top slide plate are provided with second lug plates, the second lug plates are curved plates with square cross sections and fan-shaped longitudinal sections, and the shape and the size of the bottom slide plate and the top slide plate are completely the same; The cambered surfaces of the base plate and the top base plate are sliding surfaces, the cambered surfaces have equal radiuses, and the vertical projection of the cambered surfaces is rectangular; the left and right ends of the base plate and the top plate are provided with second stop blocks, the periphery of the base plate is provided with a lower connecting plate, and the left and right sides of the top plate are provided with third ear plates which are straight plates with square cross sections; the first track and the second track are respectively four curved tracks with the cross sections of being gamma-shaped and the longitudinal sections of being fan-shaped, the first track is provided with two curved surfaces fixed on the cambered surfaces of the bottom sliding plate and the other two curved surfaces fixed on the cambered surfac