Liftable seismic isolation rubber bearing for building

Abstract

The prevent invention provides a liftable seismic isolation rubber bearing for a building, comprising a seismic isolation bearing body, upper steel bar socket connecting pieces being provided above the seismic isolation bearing body; a positioning plate is provided below the seismic isolation bearing body, a lower connecting plate being provided above the positioning plate, and lower steel bar socket connecting pieces being provided below the positioning plate; an upper connecting plate is provided with upper bolts screwed into the upper steel bar socket connecting pieces, and after the upper bolts are screwed in, some length will remain. The present invention has the beneficial effects of simple connection of the structure, simple construction steps, and high construction efficiency.

Description

A seismic isolation rubber bearing capable of being lifted off a building Technical Field

[0001] The invention relates to the technical field of earthquake isolation on buildings, in particular to a building earthquake isolation and detachable rubber bearing connected through a sleeve. Background Art

[0002] Earthquakes are one of the most serious natural disasters that threaten human survival. The use of seismic isolation technology can effectively reduce the horizontal seismic effects of the entire structure. Currently, seismic isolation technology has been widely used in my country. The most commonly used seismic isolation device in my country is the rubber seismic isolation bearing. The characteristics of the material determine that the tensile strength and tensile bearing capacity of the rubber seismic isolation bearing are insufficient. my country's "Code for Seismic Design of Buildings" stipulates that the tensile stress of the rubber seismic isolation bearing cannot be greater than 1MPa. When the height and width of the structure are large or the earthquake action is large, the rubber seismic isolation bearing will inevitably generate a large tensile stress. At this time, the internal part of the bearing will be damaged, seriously affecting the performance of the bearing and even the seismic isolation effect of the structure. For example, a Chinese patent document discloses a laminated rubber seismic isolation bearing with a lift-off device and a construction method thereof, and its publication number "CN109235660A" provides a laminated rubber seismic isolation bearing with a lift-off device, which is fixedly connected between an upper pier and a lower pier arranged opposite to each other, the lower surface of the upper pier is pre-embedded with an upper embedded plate, and the upper surface of the lower pier is pre-embedded with a lower embedded plate. The laminated rubber seismic isolation bearing with a lift-off device includes a support column, the upper side of the support column is connected to a horizontal support cover plate, the lower side of the support column is connected to a horizontal support bottom plate, the upper side of the support cover plate is connected to the upper embedded plate, and the lower side of the support bottom plate is connected to the upper side of the lower embedded plate, and it is characterized in that: the edge of the support cover plate is polished into an outwardly convex arc edge, the laminated rubber seismic isolation bearing with a lift-off device also includes a lift-off device, the The lifting device is a steel ring, which is a fixed-section ring with a Z-shaped cross-section, and includes a clamping ring plate, a connecting ring plate and a limiting ring plate. The connecting ring plate is vertically arranged, and the two ends of the connecting ring plate are fixedly connected to the clamping ring plate and one end of the limiting ring plate respectively. The clamping ring plate and the limiting ring plate are horizontally arranged and face oppositely, the limiting ring plate faces inward relative to the connecting ring plate, and the clamping ring plate faces outward relative to the connecting ring plate. The clamping ring plate is tightly attached to the lower side surface of the upper embedded plate, and the clamping ring plate is provided with a circle of bolt holes arranged at equal distances. The bolt holes sequentially pass through the clamping ring plate and the upper embedded plate and are vertically anchored in the upper pier. The limiting ring plate, the connecting ring plate and the upper pier are enclosed to form a lifting space, and the support cover plate is embedded in the lifting space and can slide vertically relative to each other in the lifting space. The internal size of the lifting space is adapted to the outer edge size of the support cover plate.

[0003] The fixing method of the liftable device disclosed in this patent document is complex, inconvenient to replace, has a long construction period, requires customized processing of the cover plate, and has an unstable connection.

[0004] Summary of the Invention

[0005] The purpose of the present invention is to solve the problems of the existing technology that the fixing method of the removable device is complex, the construction period is long, customized processing is required, and replacement is inconvenient. A removable building seismic isolation rubber bearing is provided, which has the advantages of simple fixing method, stable connection, easy replacement and short construction period.

[0006] The technical solution adopted by the present invention to solve the above-mentioned technical problems is a liftable building seismic isolation rubber bearing, comprising a seismic isolation bearing body, an upper steel sleeve connector provided above the seismic isolation bearing body, a positioning plate provided below the seismic isolation bearing body, a lower connecting plate provided above the positioning plate, a lower steel sleeve connector provided below the positioning plate, and an upper connecting plate provided with an upper bolt screwed into the upper steel sleeve connector, with a portion of length remaining after the upper bolt is screwed in.

[0007] The isolation bearing body acts to mitigate vibrations. The upper and lower connecting plates are connected by steel sleeve connectors. The positioning plate facilitates the installation of the steel sleeve connectors on the positioning plate and lower connecting plate during construction. The sleeve connection is more convenient, effectively reducing the construction cycle and making sleeve replacement easier.

[0008] The upper connecting plate is threaded with upper bolts and the upper steel sleeve connector, with a gap between the upper bolts and the upper connecting plate. The positioning plate is threaded with positioning bolts and the lower steel sleeve connector. After the upper bolts are screwed in, a certain length remains. When the upper structure exceeds the expected lift-off displacement, the limiter device (the upper bolt) contacts the upper connecting plate, allowing the upper connecting plate to bear the tensile force to limit the lift-off displacement, leaving a certain buffer gap and increasing the vertical deformation.

[0009] Preferably, a rubber protective layer is filled between the upper connecting plate and the lower connecting plate, the area of ​​the rubber protective layer is less than or equal to the area of ​​the lower connecting plate, a plurality of stiffening plates are provided in the rubber protective layer, the cross-section of the stiffening plates is circular when viewed from above, the diameter of the stiffening plates is less than the length of the shortest side of the lower connecting plate, and an inner rubber layer is filled between the stiffening plates. The rubber protective layer can be regarded as wrapping the plurality of stiffening plates as a whole, and the inner rubber layer is filled between the stiffening plates. The inner rubber layer and the rubber layer can be made of the same material, or different rubber materials can be used according to actual construction needs. Vulcanization molding is carried out during the actual construction process. The circular design of the stiffening plate makes the force more uniform.

[0010] Preferably, the stiffening plates are parallel to the lower connecting plate, and are evenly distributed between the upper and lower connecting plates. This parallel placement ensures the overall strength of the isolation bearing body while also providing a more even distribution of forces. Even distribution refers to the equal spacing between the stiffening plates, ensuring more even force transmission and distribution, enabling greater resistance to higher forces.

[0011] Preferably, a stiffening plate center hole is provided at the center of the stiffening plate, and stiffening plate process holes are evenly distributed in the circumferential direction of the outer circumference of the stiffening plate center hole. The provision of the stiffening plate process holes facilitates the molding of the seismic isolation bearing body.

[0012] Preferably, the lower connecting plate is part of the seismic isolation support body, with a lower connecting plate central hole defined in the center thereof, and evenly distributed lower connecting plate heat conduction holes defined on the outer periphery of the lower connecting plate central hole. The lower connecting plate central hole corresponds one-to-one with the stiffening plate central hole, and the lower connecting plate heat conduction holes corresponds one-to-one with the stiffening plate process holes. This one-to-one correspondence between the holes provides a certain positioning function, facilitating installation during construction. After the holes are aligned, anchor bars or other fixtures can be directly inserted, improving construction efficiency and facilitating construction.

[0013] Preferably, the upper connecting plate is part of the seismic isolation bearing body, and an upper connecting plate middle hole is provided in the center of the upper connecting plate, and evenly distributed upper connecting plate heat conduction holes are provided on the outer peripheral side of the upper connecting plate middle hole, and the upper connecting plate middle hole corresponds one to one with the stiffening plate middle hole, and the upper connecting plate heat conduction holes correspond one to one with the stiffening plate process holes; the outermost circumference of the upper connecting plate is provided with evenly distributed connection holes, and the connection holes correspond one to one with the upper steel sleeve connector. The one-to-one correspondence of the holes plays a certain limiting role, which facilitates the installation during the construction process. After the holes are aligned during the construction process, the fixed anchor bars or other fixings can be directly inserted, which improves the construction efficiency and facilitates the construction. At the same time, the anchor bars correspond to the connection holes and the upper steel sleeve connector, and the anchor bars can be directly screwed accurately through the steel sleeve connector, which facilitates the installation and connection during the construction process.

[0014] Preferably, the upper steel bar sleeve connectors are evenly distributed along the circumference of the upper connecting plate. Anchor bars are provided within the upper steel bar sleeve connectors of the upper connecting plate to connect to the upper support surface. An anchor bar is provided within the lower steel bar sleeve connectors of the positioning plate to connect to the lower support surface. The lower connecting plate, the positioning plate, and the lower steel bar sleeve connectors are connected by positioning bolts. The anchor bars connecting the upper and lower support surfaces increase the overall strength of the device, allowing the device to withstand greater forces.

[0015] Preferably, the upper connecting plate has a circular cross-section when viewed from above, while the lower connecting plate has a square cross-section when viewed from above. The diameter of the upper connecting plate is greater than the diagonal length of the lower connecting plate. The lower connecting plate is provided with a plurality of mounting holes at its four corners, which are symmetrically arranged. The circular design facilitates installation and provides more uniform force distribution. The lower connecting plate can be viewed from above as an inscribed square of the upper connecting plate. The upper and lower connecting plates are closely connected, and this inscribed relationship ensures a more stable and uniform force distribution. The diagonal mounting holes provide a more stable and secure fixation, thereby improving the overall strength and stability of the device to a certain extent.

[0016] As a preferred embodiment, the mounting holes correspond to the lower steel sleeve connectors one by one. In the actual construction process, the anchor bars can be directly screwed to the lower steel sleeve connectors, so that the anchor bars can be accurately installed, which improves construction efficiency and simplifies the construction operation steps of the staff.

[0017] Preferably, the size of the lower connecting plate is adapted to the size of the positioning plate, and the lower connecting plate and the positioning plate are arranged vertically opposite each other. This ensures that the direct connection between the lower connecting plate and the positioning plate is more convenient and more secure, and facilitates the staff to confirm that the lower half is installed. The alignment of the edges of the lower connecting plate and the positioning plate proves that the lower half is installed in place.

[0018] The beneficial effects of the present invention are simple connection method, simple construction steps, high construction efficiency, simplification of some construction operation steps, high strength, more uniform force and the ability to withstand stronger forces, easy replacement, no customized parts but only standard parts, and simple installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG1 is a schematic diagram of the assembly of the seismic isolation support body of the present invention.

[0020] FIG2 is an enlarged schematic diagram of point A in FIG1 .

[0021] FIG3 is an enlarged schematic diagram of point B in FIG1 .

[0022] FIG4 is a schematic half-section view of the seismic isolation support body of the present invention.

[0023] FIG5 is a schematic top view of the upper connecting plate of the present invention.

[0024] FIG6 is a schematic top view of the lower connecting plate of the present invention.

[0025] FIG. 7 is a schematic top view of the stiffening plate of the present invention.

[0026] In the figure: 1. Seismic isolation bearing body, 2. Upper connecting plate, 201. Middle hole of upper connecting plate, 202. Heat conduction hole of upper connecting plate, 203. Connecting hole, 3. Lower connecting plate, 301. Middle hole of lower connecting plate, 302. Heat conduction hole of lower connecting plate, 303. Mounting hole, 4. Upper steel sleeve connector, 5. Process hole of stiffening plate, 6. Positioning plate, 7. Rubber protective layer, 8. Inner rubber layer, 9. Stiffening plate, 901. Middle hole of stiffening plate, 10. Upper bolt, 11. Positioning bolt, 12. Anchor bar, 13. Washer, 14. Lower steel sleeve connector, A. Detailed enlarged diagram, B. Detailed enlarged diagram. DETAILED DESCRIPTION

[0027] The specific implementation of the technical solution of the present invention will be further described below through examples and in conjunction with the accompanying drawings.

[0028] As shown in Figures 1 to 7, a removable building seismic isolation rubber bearing includes a seismic isolation bearing body 1. Upper steel sleeve connectors 4 are evenly distributed along the circumference of an upper connecting plate 2 above the seismic isolation bearing body 1. The upper connecting plate 2 is part of the seismic isolation bearing body 1. A positioning plate 6 is provided below the seismic isolation bearing body 1. A lower connecting plate 3 is provided above the positioning plate 6. A lower steel sleeve connector 14 is provided below the positioning plate 6. The lower connecting plate 3 is part of the seismic isolation bearing body 1. The upper connecting plate 2 is provided with an upper bolt 10 connected to the upper steel sleeve connector 4. After the upper bolt 10 is screwed in, a portion of the length remains. The size of the lower connecting plate 3 is compatible with the size of the positioning plate 6. The lower connecting plate 3 and the positioning plate 6 are arranged vertically opposite each other. The lower connecting plate 3 and the positioning plate 6 and the lower steel sleeve connector 14 are connected by positioning bolts 11. In this embodiment, the lower steel sleeve connector 14 connected to the positioning plate 6 and the upper steel sleeve connector 4 connected to the upper connecting plate 2 are the same type of connector and are replaceable. The seismic isolation bearing body 1 plays the role of reducing vibration, and the positioning plate 6 is used to help workers in the construction process to more conveniently install the lower steel sleeve connector 14 to the positioning plate 6 and the lower connecting plate 3. A rubber protective layer 7 is filled between the upper connecting plate 2 and the lower connecting plate 3. The area of ​​the rubber protective layer 7 is less than or equal to the area of ​​the lower connecting plate 3. The area of ​​the rubber protective layer 7 is adjusted according to actual needs. During general construction, the area of ​​the rubber protective layer 7 will be smaller than the area of ​​the lower connecting plate 3, leaving a part of the area to facilitate subsequent construction steps. Several stiffening plates 9 are provided in the rubber protective layer 7. The cross-section of the stiffening plate 9 is circular when viewed from above. The diameter of the stiffening plate 9 is less than the length of the shortest side of the lower connecting plate 3. An inner rubber layer 8 is filled between the several stiffening plates 9. In this embodiment, the inner rubber layer 8 and the rubber protective layer 7 are made of the same rubber material, namely high-damping rubber. At the same time, different rubber materials can be used in different application scenarios and different geological environments. The inner rubber layer 8 and the rubber protective layer 7 can use different rubber materials according to actual needs. The stiffening plates 9 are parallel to the lower connecting plate 3 and are evenly distributed between the upper connecting plate 2 and the lower connecting plate 3. The even spacing between the stiffening plates 9 makes the force distribution more uniform, greatly improving the load-bearing and force-bearing strength of the device. A stiffening plate center hole 901 is provided at the center of the stiffening plate 9. Stiffening plate process holes 5 are evenly distributed circumferentially around the outer circumference of the stiffening plate center hole 901. In this embodiment, four stiffening plate process holes 5 are provided, and these four stiffening plate process holes 5 correspond one-to-one with the four lower connecting plate thermal conduction holes 302. The four lower connecting plate thermal conduction holes 302 also correspond one-to-one with the four upper connecting plate thermal conduction holes 202.A lower connecting plate hole 301 is provided in the center of the lower connecting plate 3, and evenly distributed lower connecting plate heat conduction holes 302 are provided on the outer periphery of the lower connecting plate hole 301. The lower connecting plate hole 301 corresponds to the stiffening plate hole 901 one-to-one. An upper connecting plate hole 201 is provided in the center of the upper connecting plate 2, and evenly distributed upper connecting plate heat conduction holes 202 are provided on the outer periphery of the upper connecting plate hole 201. The upper connecting plate hole 201 corresponds to the stiffening plate hole 901 one-to-one. The outermost circumference of the upper connecting plate 2 is provided with evenly distributed connection holes 203, and the connection holes 203 correspond to the upper steel sleeve connector 4 one-to-one. In this embodiment, a total of sixteen connection holes 203 are provided, that is, sixteen upper steel sleeve connectors 4 are provided and correspond to them. Anchor bars 12 are provided in the upper steel sleeve connector 4 of the upper connecting plate 2 to connect to the upper support surface, and anchor bars 12 are provided in the lower steel sleeve connector 14 of the positioning plate 6 to connect to the lower support surface. The upper connecting plate 2 is provided with an upper bolt 10 that is screwed to the upper steel sleeve connector 4, with a gap left between the upper bolt 10 and the upper connecting plate 2; the positioning plate 6 is provided with a positioning bolt 11 that is screwed to the lower steel sleeve connector 14. The upper connecting plate 2 has a circular cross-section when viewed from above, while the lower connecting plate 3 has a square cross-section when viewed from above. The diameter of the upper connecting plate 2 is greater than the diagonal length of the lower connecting plate 3; the four corners of the lower connecting plate 3 are provided with a plurality of mounting holes 303, which are arranged symmetrically. In this embodiment, the mounting holes 303 are distributed in an isosceles right triangle, with the mounting holes 303 at the right angles of the isosceles triangle located on the diagonal of the square. The mounting holes 303 correspond one-to-one with the steel sleeve connector 4. In this embodiment, there are four groups of mounting holes 303 located at the four right angles of the square lower connecting plate 3. Each group has three mounting holes 303, and the three mounting holes 303 form an isosceles right triangle. The mounting holes 303 on one of the four corners of the lower connecting plate 3 are located on the diagonal of the lower connecting plate 3, and the diagonal of the lower connecting plate 3 passes through the lower connecting plate hole 301. There are twelve lower steel bar sleeve connectors 14 corresponding to the mounting holes 303.

[0029] Example 2

[0030] This embodiment is used to further illustrate the solution of the present invention. Twelve anchor bars 12 are embedded on the lower support surface, and the mounting holes 303 on the lower connecting plate 3 of the seismic isolation bearing body 1 are aligned with the corresponding holes of the positioning plate 6 below the lower connecting plate 3. Then, twelve lower steel sleeve connectors 14 are installed below the positioning plate 6 and fixed with positioning bolts 11. In this embodiment, the positioning bolt 11 is fixed from top to bottom, that is, the nut of the positioning bolt 11 is located above the lower connecting plate 3, and a washer 13 is provided between the nut of the positioning bolt 11 and the connecting plate 3 to increase the friction force of the positioning bolt 11. The seismic isolation bearing body 1 is regarded as a whole, and the upper connecting plate 2, the lower connecting plate 3, the rubber protective layer 7, the inner rubber layer 8, and the stiffening plate 9 are vulcanized together into a whole. Among them, the hole 901 in the stiffening plate of the stiffening plate 9 is a film, which is reserved during the plate processing. Of course, the method proposed in this embodiment is only one method, and there are other methods that are not repeated in this embodiment. When the lower part of the isolation bearing body 1 and the embedded anchor bar 12 are connected, the connection of the lower half of the isolation bearing body 1 is considered to be completed. The connection of the upper half of the isolation bearing body 1 adopts a similar method, and the connection of the upper half of the isolation bearing body 1 adopts a top-down installation method. The upper bolt 10 is located below the upper connecting plate 2, and the upper steel sleeve connector 4 is fixed above the upper connecting plate 2. After the installation is completed, the anchor bar 12 is filled in the upper steel sleeve connector 4 and contacts the upper support surface. The upper bolt 10 is located below the upper connecting plate 2 and a certain gap is left. The upper connecting plate 2 is provided with an upper bolt 10 and an upper steel sleeve connector 4 for connection. After the upper bolt 10 is screwed in, a part of the length will remain. When the upper bolt 10 is tightened, the upper support surface is subjected to vertical tension, which plays a tightening role. As the vertical force is too large, the upper bolt 10 gradually loosens. Because a gap is left, the upper bolt 10 is displaced upward in the vertical direction. At this time, the gravitational potential energy of the structure is used to offset the tensile stress. When the released vertical displacement is too large, it will produce a large overturning force on the upper structure, especially when the support undergoes a large horizontal deformation and the vertical lifting displacement is too large. At this time, the upper structure will tend to tilt in the direction of horizontal deformation as a whole. At this time, the upper bolt 10 will be directly disconnected when the force reaches the maximum state, preventing the risk of the seismic isolation building from overturning as a whole.

[0031] In addition to the above-mentioned embodiments, within the scope disclosed in the claims and description of the present invention, the technical features or technical data of the present invention can be reselected and combined to form new embodiments. These can be achieved by those skilled in the art without creative work. Therefore, these embodiments that are not described in detail in the present invention should also be regarded as specific embodiments of the present invention and within the scope of protection of the present invention.

Claims

1. A removable building seismic isolation rubber bearing, characterized in that: The invention comprises a seismic isolation support body (1), wherein an upper steel bar sleeve connector (4) is provided above the seismic isolation support body (1), a positioning plate (6) is provided below the seismic isolation support body (1), a lower connecting plate (3) is provided above the positioning plate (6), a lower steel bar sleeve connector (14) is provided below the positioning plate (6), and an upper bolt (10) is provided on the upper connecting plate (2) and is screwed into the upper steel bar sleeve connector (4), and a part of the length of the upper bolt (10) remains after being screwed in.

2. The detachable building seismic isolation rubber bearing according to claim 1, characterized in that: A rubber protective layer (7) is filled between the upper connecting plate (2) and the lower connecting plate (3); the area of ​​the rubber protective layer (7) is less than or equal to the area of ​​the lower connecting plate (3); a plurality of stiffening plates (9) are arranged in the rubber protective layer (7); the stiffening plates (9) are circular in cross-section when viewed from above; the diameter of the stiffening plates (9) is less than the length of the shortest side of the lower connecting plate (3); and an inner rubber layer (8) is filled between the plurality of stiffening plates (9).

3. The detachable building seismic isolation rubber bearing according to claim 2, characterized in that: The stiffening plates (9) and the lower connecting plate (3) remain parallel, and the stiffening plates (9) are evenly distributed between the upper connecting plate (2) and the lower connecting plate (3).

4. The detachable building seismic isolation rubber bearing according to claim 3 is characterized in that: The stiffening plate (9) is provided with a stiffening plate center hole (901) at the center of the circle, and stiffening plate process holes (5) are evenly distributed in the circumferential direction of the outer circumference of the stiffening plate center hole (901).

5. The detachable building seismic isolation rubber bearing according to claim 1 or 4, characterized in that: The lower connecting plate (3) is a part of the seismic isolation support body (1); a lower connecting plate middle hole (301) is provided at the center of the lower connecting plate (3); evenly distributed lower connecting plate heat conduction holes (302) are provided on the outer peripheral side of the lower connecting plate middle hole (301); the lower connecting plate middle hole (301) corresponds to the stiffening plate middle hole (901) one by one; and the lower connecting plate heat conduction holes (302) correspond to the stiffening plate process holes (5) one by one.

6. The detachable building seismic isolation rubber bearing according to claim 1 or 4, characterized in that: The upper connecting plate (2) is a part of the seismic isolation bearing body (1), the upper connecting plate (2) is provided with an upper connecting plate middle hole (201) at the center, the outer peripheral side of the upper connecting plate middle hole (201) is provided with upper connecting plate heat conduction holes (202) evenly distributed, the upper connecting plate middle hole (201) and the stiffening plate middle hole (901) correspond one-to-one, and the upper connecting plate heat conduction holes (202) and the stiffening plate process holes (5) correspond one-to-one; the outermost circumference of the upper connecting plate (2) is provided with evenly distributed connection holes (203), and the connection holes (203) and the upper steel sleeve connecting pieces (4) correspond one-to-one.

7. The detachable building seismic isolation rubber bearing according to claim 1, characterized in that: The upper steel sleeve connector (4) is evenly distributed along the circumference of the upper connecting plate (2); an anchor bar (12) is provided inside the upper steel sleeve connector (4) of the upper connecting plate (2) to connect to the upper support surface; an anchor bar (12) is provided inside the lower steel sleeve connector (14) of the positioning plate (6) to connect to the lower support surface; and the lower connecting plate (3) and the positioning plate (6) and the lower steel sleeve connector (14) are connected by positioning bolts (11).

8. The detachable building seismic isolation rubber bearing according to claim 1, characterized in that: The cross section of the upper connecting plate (2) is circular when viewed from above, and the cross section of the lower connecting plate (3) is square when viewed from above. The diameter of the upper connecting plate (2) is greater than the diagonal length of the lower connecting plate (3). A plurality of mounting holes (303) are provided at the four corners of the lower connecting plate (3), and the mounting holes (303) are symmetrically arranged.

9. The detachable building seismic isolation rubber bearing according to claim 1 or 8, characterized in that: The mounting holes (303) correspond to the lower steel bar sleeve connectors (14) in a one-to-one manner.

10. The detachable building seismic isolation rubber bearing according to claim 1, characterized in that: The size of the lower connecting plate (3) is adapted to the size of the positioning plate (6), and the lower connecting plate (3) and the positioning plate (6) are arranged vertically opposite to each other.

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