A two-way guide friction pendulum isolation bearing with a function of resisting uplift

Abstract

The present invention relates to a two-way guide friction pendulum isolation bearing with a tensile function, which comprises an upper bearing plate assembly and a lower bearing plate assembly respectively connected to the upper structure and the lower structure of a building. The upper bearing plate assembly and the lower bearing plate assembly are arranged oppositely. An upper guide block is fixed inside the upper bearing plate assembly, and a lower guide block is fixed inside the lower bearing plate. A sliding block is arranged between the upper guide block and the lower guide block. An upper sliding groove matching with the upper part of the sliding block is arranged on the upper guide block, and a lower sliding groove matching with the lower part of the sliding block is arranged on the lower guide block. The upper sliding groove and the lower sliding groove are arranged in a relatively perpendicular direction, and the upper and lower parts of the sliding block are respectively slidably connected to the upper sliding groove and the lower sliding groove. The two-way guide friction pendulum isolation bearing with a tensile function proposed by the present invention can limit the vertical displacement of the bearing, has reasonable force, simple structure, safety and reliability, and good isolation effect, and can be widely applied to building and bridge engineering.

Description

Technical Field

[0001] The invention relates to the technical field of building shock absorption, in particular to a double-guide rail friction pendulum type seismic isolation support with anti-pullout function. Background Art

[0002] Friction pendulum isolation bearings have been widely used in building structures and bridge projects since the 1980s due to their advantages such as small structural size and the ability to control structural isolation period.

[0003] The working principle of the friction pendulum type seismic isolation bearing is relatively simple: the building superstructure is supported on a sliding surface. When the building superstructure and the substructure are relatively displaced, it moves like a pendulum. Therefore, any horizontal movement will produce a vertical lift of gravity. If the friction force is ignored, the motion equation of the system is approximately the motion of a pendulum with equal mass, and the length of the pendulum is the radius of curvature of the surface. The isolation period of the friction pendulum type seismic isolation bearing is determined by the radius of curvature of the first sliding surface. The period of the seismic isolation structure is: Therefore, the swing period of the support can be changed by changing the curvature radius of the support surface, thereby extending the structural period. As a result, the seismic energy absorbed by the structure will be sharply reduced to achieve the purpose of seismic isolation.

[0004] The friction between the bearing wear plate and the stainless steel plate will eventually convert the earthquake energy into heat energy and consume it. After the earthquake, the bearing has the ability to automatically reset under the action of the upper structure's own gravity.

[0005] The friction pendulum isolation bearings currently used in buildings have no anti-pullout function because the isolation device swings along the lower bearing plate when working, which requires the upper structure to be lifted. The bearings cannot limit the vertical displacement of the building and can only be subjected to compression, making it difficult to achieve both tension and compression. This requires the use of an anti-pullout device in practical applications, and the anti-pullout device must move vertically with the friction pendulum isolation bearing. Summary of the invention

[0006] In order to overcome the above-mentioned deficiencies in the prior art, the present invention proposes a dual-guide rail friction pendulum seismic isolation bearing with anti-pullout function, which solves the technical problem that the existing friction pendulum seismic isolation bearing is difficult to achieve both tension and compression and requires additional anti-pullout devices.

[0007] The present invention is achieved through the following technical solutions:

[0008] A two-way guide friction pendulum isolation bearing with a function of resisting tensile pull-out, comprising an upper bearing plate assembly and a lower bearing plate assembly respectively connected to the upper structure and the lower structure of a building. The upper bearing plate assembly and the lower bearing plate assembly are arranged oppositely. An upper guide block is fixed inside the upper bearing plate assembly, and a lower guide block is fixed inside the lower bearing plate. A sliding block is arranged between the upper guide block and the lower guide block. An upper sliding groove matching with the upper part of the sliding block is arranged on the upper guide block, and a lower sliding groove matching with the lower part of the sliding block is arranged on the lower guide block. The upper sliding groove and the lower sliding groove are arranged in a relatively perpendicular direction, and the upper and lower parts of the sliding block are respectively slidably connected to the upper sliding groove and the lower sliding groove.

[0009] Further, the upper guide block includes an upper guide plate and first side limiting blocks located on both sides of the lower surface of the upper guide plate. A first stainless steel plate is arranged on the lower surface of the upper guide plate, and the upper guide plate and the two first side limiting blocks form an upper sliding groove.

[0010] Further, the first side limiting blocks and the upper guide plate are fixedly connected by internal hexagonal bolts.

[0011] Further, the lower guide block includes a lower guide plate and second side limiting blocks located on both sides of the upper surface of the lower guide plate. A second stainless steel plate is arranged on the upper surface of the lower guide plate, and the lower guide plate and the two second side limiting blocks form a lower sliding groove.

[0012] Further, the second side limiting blocks and the lower guide plate are integrally designed or fixedly connected by internal hexagonal bolts.

[0013] Further, the sliding block includes a sliding block body and upper and lower sliding plates located on both sides of the sliding block body. Wear-resistant plates are arranged on the upper surface of the upper sliding plate and the lower surface of the lower sliding plate. The wear-resistant plate on the upper surface of the upper sliding plate and the first stainless steel plate form a first sliding friction pair, and the wear-resistant plate on the lower surface of the lower sliding plate and the second stainless steel plate form a second sliding friction pair.

[0014] Further, the upper bearing plate assembly includes an upper bearing plate and upper anchor steel bars fixed on the upper bearing plate by anchor bolts. The two ends of the upper anchor steel bars are respectively connected to the upper bearing plate and the upper structure of the building; the lower bearing plate assembly includes a lower bearing plate and lower anchor steel bars fixed on the lower bearing plate by anchor bolts. The two ends of the lower anchor steel bars are respectively connected to the lower bearing plate and the lower structure of the building.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] A two-way guide rail friction pendulum isolation bearing with a tensile resistance function proposed by the present invention has the function of tensile resistance on the basis of retaining the function of the friction pendulum isolation bearing, and is more suitable for the construction field.

[0017] The movement of the sliding block of this bearing is approximately a pendulum movement with equal mass, and the length of the pendulum is the radius of curvature of the curved surface. By changing the radius of curvature of the bearing curved surface, the swing period of the structure can be changed to achieve the expected isolation period. Thus, the seismic energy absorbed by the structure can be rapidly reduced, and the seismic energy can be dissipated as heat energy through the friction of the friction material. The isolation period of the isolation bearing is determined by the radius of curvature of the first sliding surface, and its period is: After an earthquake, the bearing has the ability to automatically reset under the action of the self-weight of the superstructure. When the bearing is stressed in the vertical direction and has a relative movement tendency, the side limit blocks of the upper and lower guide rail blocks will limit their relative movement with the sliding block, realizing the tensile resistance function of the bearing.

[0018] The two-way guide rail friction pendulum isolation bearing with a tensile resistance function provided by this application overcomes the limitation that the traditional friction pendulum isolation bearing cannot limit the vertical displacement of the bearing. It has reasonable force, simple structure, safety and reliability, and good isolation effect. It can be widely used in building and bridge engineering to improve the safety, stability and economy of the project, etc. Brief Description of the Drawings

[0019] Figure 1 is an exploded schematic view of a two-way guide rail friction pendulum isolation bearing with a tensile resistance function according to an embodiment of the present invention;

[0020] Figure 2 is the front view of a two-way guide rail friction pendulum isolation bearing with a tensile resistance function (after removing the upper and lower anchor steel bars) according to an embodiment of the present invention;

[0021] Figure 3 is the left view of a two-way guide rail friction pendulum isolation bearing with a tensile resistance function according to an embodiment of the present invention;

[0022] Figure 4 is Figure 2 the first structural schematic view of the A-A section of the upper guide rail block;

[0023] Figure 5 is Figure 2 the second structural schematic view of the A-A section of the upper guide rail block;

[0024] Figure 6 is Figure 3 the schematic view of the B-B section of the lower guide rail block;

[0025] Figure 7 isFigure 6 Schematic diagram of the C-C section of the middle and lower guide blocks

[0026] Figure 8 Partial cross-sectional view of the sliding block according to the embodiment of the present invention

[0027] In the figure:

[0028] 1. Upper support plate assembly; 2. Upper guide block; 21. Upper guide plate; 22. First side limit block; 23. First stainless steel plate; 24. Upper sliding groove; 3. Sliding block; 31. Upper sliding plate; 32. Lower sliding plate; 33. Wear-resistant plate; 34. Sliding block body; 4. Lower guide block; 41. Second stainless steel plate; 42. Second side limit block; 43. Lower guide plate; 44. Lower sliding groove; 5. Lower support plate assembly Specific embodiments

[0029] Some embodiments of the present invention will be specifically described by showing examples, and should not be construed as limiting the scope of the present invention. Improvements can be made to the disclosed content of the present invention in terms of materials, methods, and reaction conditions simultaneously, and all these improvements should fall within the spirit and scope of the present invention

[0030] As Figure 1-8 shown, a two-way guide friction pendulum isolation bearing with a tensile resistance function includes an upper support plate assembly 1 and a lower support plate assembly 5 respectively connected to the upper structure and the lower structure of a building. The upper support plate assembly 1 and the lower support plate assembly 5 are arranged opposite to each other. An upper guide block 2 is fixed inside the upper support plate assembly 1, and a lower guide block 4 is fixed inside the lower support plate. A sliding block 3 is arranged between the upper guide block 2 and the lower guide block 4. An upper sliding groove 24 matching the upper part of the sliding block 3 is provided on the upper guide block 2, and a lower sliding groove 44 matching the lower part of the sliding block 3 is provided on the lower guide block 4. The upper sliding groove 24 and the lower sliding groove 44 are arranged in a relatively perpendicular direction, and the upper and lower parts of the sliding block 3 are respectively slidably connected to the upper sliding groove 24 and the lower sliding groove 44

[0031] In this embodiment, the upper guide block 2 includes an upper guide plate 21 and first side limit blocks 22 located on both sides of the lower surface of the upper guide plate 21. A first stainless steel plate 23 is provided on the lower surface of the upper guide plate 21. The upper guide plate 21 and the two first side limit blocks 22 form the upper sliding groove 24. The first side limit blocks 22 and the upper guide plate 21 are fixedly connected by inner hexagon bolts

[0032] In this embodiment, the lower guide block 4 includes a lower guide plate 43 and second side limit blocks 42 located on both sides of the upper surface of the lower guide plate 43. A second stainless steel plate 41 is provided on the upper surface of the lower guide plate 43. The lower guide plate 43 and the two second side limit blocks 42 form a lower sliding groove 44. The second side limit blocks 42 and the lower guide plate 43 are integrally designed or fixedly connected by hexagon socket head cap screws.

[0033] In this embodiment, the sliding block 3 includes a sliding block body 34 and upper and lower sliding plates 31 and 32 located on the upper and lower sides of the sliding block body 34. Wear-resistant plates 33 are provided on the upper surface of the upper sliding plate 31 and the lower surface of the lower sliding plate 32. The wear-resistant plate 33 on the upper surface of the upper sliding plate 31 and the first stainless steel plate 23 form a first sliding friction pair, and the wear-resistant plate 33 on the lower surface of the lower sliding plate 32 and the second stainless steel plate 41 form a second sliding friction pair.

[0034] In this embodiment, the upper support plate assembly 1 includes an upper support plate and upper anchor steel bars fixed to the upper support plate by anchor bolts. The two ends of the upper anchor steel bars are respectively connected to the upper support plate and the upper structure of the building; the lower support plate assembly 5 includes a lower support plate and lower anchor steel bars fixed to the lower support plate by anchor bolts. The two ends of the lower anchor steel bars are respectively connected to the lower support plate and the lower structure of the building.

[0035] When horizontal displacements occur in any direction between the upper and lower structures of the building due to earthquakes or other factors, the displacements will be decomposed into two mutually perpendicular sliding groove directions, that is, the total displacement The displacement in the x direction is consistent with the direction of the lower sliding groove 44 on the lower guide block 4. The sliding block 3 moves along the lower sliding groove 44 of the lower guide block 4 like a pendulum, and the height of the upper sliding plate 31 of the sliding block 3 changes, causing the upper guide block 2 and the upper structure of the building to be elevated; the displacement in the y direction is consistent with the direction of the upper sliding groove 24 on the upper guide block 2. The relative movement between the upper guide block 2 and the sliding block 3 causes the upper guide block 2 to be elevated, and the upper structure of the building is also elevated accordingly.

[0036] The motion equation of this system is approximately that of a pendulum with equal mass, and the length of the pendulum is the radius of curvature of the curved surface. By changing the radius of curvature of the support curved surface, the swing period of the support can be changed to achieve the expected isolation period. Thus, the seismic energy absorbed by the structure can be rapidly reduced, and the seismic energy can be dissipated as heat energy through the friction of the friction material. The isolation period of the isolation bearing is determined by the radius of curvature of the first sliding surface, and its period is: After an earthquake, the bearing has the ability to automatically reset under the action of the self-weight of the upper structure.

[0037] When an earthquake or other factors cause a relative movement tendency between the upper structure and the lower structure of a building in the vertical direction, the upper sliding plate 31 of the sliding block 3 is blocked by the two first side limit blocks 22 of the upper guide block 2, and the lower sliding plate 32 is blocked by the two second side limit blocks 42 of the lower guide block 4, so that the upper and lower parts of the bearing cannot move vertically, realizing the function of anti-pulling.

[0038] In summary, a two-way guide friction pendulum isolation bearing with anti-pulling function of the present application overcomes the deficiencies of the existing friction pendulum isolation bearing, and at the same time has the functions of anti-pulling and anti-compression, breaking its limitations in practical applications.

[0039] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present invention.

Claims

1. A two-way guide friction pendulum isolation bearing with a function of resisting tensile pull-out, characterized in that, It includes an upper support plate assembly (1) and a lower support plate assembly (5) respectively connected to the upper structure and the lower structure of the building. The upper support plate assembly (1) and the lower support plate assembly (5) are arranged oppositely. An upper guide block (2) is fixed inside the upper support plate assembly (1), and a lower guide block (4) is fixed inside the lower support plate. A sliding block (3) is arranged between the upper guide block (2) and the lower guide block (4). An upper sliding groove (24) matching with the upper part of the sliding block (3) is arranged on the upper guide block (2), and a lower sliding groove (44) matching with the lower part of the sliding block (3) is arranged on the lower guide block (4). The upper sliding groove (24) and the lower sliding groove (44) are arranged in a relatively perpendicular direction. The upper and lower parts of the sliding block (3) are respectively slidably connected to the upper sliding groove (24) and the lower sliding groove (44). The upper guide block (2) includes an upper guide plate (21) and first side limit blocks (22) located on both sides of the lower surface of the upper guide plate (21). A first stainless steel plate (23) is arranged on the lower surface of the upper guide plate (21). The upper guide plate (21) and the two first side limit blocks (22) form the upper sliding groove (24). The first side limit blocks (22) and the upper guide plate (21) are fixedly connected by internal hexagonal bolts. The sliding block (3) includes a sliding block body (34), an upper sliding plate (31) and a lower sliding plate (32) located on the upper and lower sides of the sliding block body (34). Wear-resistant plates (33) are provided on the upper surface of the upper sliding plate (31) and the lower surface of the lower sliding plate (32). The wear-resistant plate (33) on the upper surface of the upper sliding plate (31) and the first stainless steel plate (23) form a first sliding friction pair, and the wear-resistant plate (33) on the lower surface of the lower sliding plate (32) and the second stainless steel plate (41) form a second sliding friction pair; the sliding surfaces of the upper sliding groove (24) and the lower sliding groove (44) are arc surfaces, and the movement track of the sliding block (3) is determined by the radius of curvature of the arc surface, and the isolation period is 2. The bidirectional guide friction pendulum isolation bearing with anti-pulling function according to claim 1, characterized in that, The lower guide block (4) includes a lower guide plate (43) and second side limit blocks (42) located on both sides of the upper surface of the lower guide plate (43). A second stainless steel plate (41) is arranged on the upper surface of the lower guide plate (43). The lower guide plate (43) and the two second side limit blocks (42) form the lower sliding groove (44).

3. The bidirectional guide friction pendulum isolation bearing with anti-pulling function according to claim 2, characterized in that, The second side limit blocks (42) and the lower guide plate (43) are integrally designed or fixedly connected by internal hexagonal bolts.

4. A two-way guide friction pendulum isolation bearing with a tensile function according to claim 1, characterized in that The upper support plate assembly (1) includes an upper support plate and upper anchor steel bars fixed on the upper support plate by anchor bolts. The two ends of the upper anchor steel bars are respectively connected to the upper support plate and the upper structure of the building. The lower support plate assembly (5) includes a lower support plate and lower anchor steel bars fixed on the lower support plate by anchor bolts. The two ends of the lower anchor steel bars are respectively connected to the lower support plate and the lower structure of the building.

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