An integrated seismic isolation system based on seismic isolation bearings

Abstract

This utility model discloses an integrated seismic isolation system based on seismic isolation bearings, including seismic isolation bearings, several pairs of supplementary buffers, upper supports, and lower supports. The upper and lower supports are vertically arranged reinforced concrete column structures with identical and overlapping vertical projection shapes. A gap is provided between the upper and lower supports. The seismic isolation bearings are positioned between the upper and lower supports, connecting them. Supplementary buffers are positioned between the upper and lower supports and are arranged in pairs on opposite sides of the seismic isolation bearings. The supplementary buffers are horizontally placed U-shaped structures. This utility model is a two-stage seismic isolation system. The device achieves effective seismic isolation through a spherical surface structure, movable contact, and stress release via friction pairs. To maximize stress release, the lower end of the device eliminates the lead core limit and adds a U-shaped plate in conjunction with the spherical cap structure for stress release. The stress release paths of this device are all arcs, allowing compressive stress to be released in the opposite direction.

Description

Technical Field

[0001] This utility model relates to the field of earthquake resistance, and in particular to an integrated seismic isolation system based on seismic isolation bearings. Background Technology

[0002] Earthquakes are severe natural disasters that cause devastating casualties and irreparable property damage. Currently, accurate earthquake prediction is not possible. Even the most advanced earthquake prediction methods can only provide warnings a few tens of seconds in advance. It is difficult for people to anticipate an earthquake and escape buildings in time. Therefore, earthquake prevention based on earthquake prediction is not currently very effective.

[0003] Existing patent CN114411974B discloses a connection node for seismic isolation bearings and its construction method. This connection node includes an anchoring assembly, a first connecting plate, an embedded plate, a lower seismic isolation pier, an upper seismic isolation pier, a column, a second connecting plate, and a seismic isolation bearing. The upper seismic isolation pier is positioned above the lower seismic isolation pier, forming a seismic isolation layer between them. The first connecting plate is mounted on the upper seismic isolation pier via the anchoring assembly, and the embedded plate is mounted on the lower seismic isolation pier via the anchoring assembly. The seismic isolation bearing is located within the seismic isolation layer and connects to the first connecting plate and the embedded plate. The lower end of the column is connected to the embedded plate, and the upper end is connected to the floor slab. The column is located between a pair of seismic isolation bearings, and the pair of seismic isolation bearings and the column share a single embedded plate. The column is connected to a structural beam via the second connecting plate. This invention optimizes and accelerates the construction progress of the seismic isolation bearing connection node and improves the structural integrity at the connection node.

[0004] It uses only seismic isolation bearings as the main seismic isolation structure and achieves rigid seismic isolation through semi-rigid contact. However, due to the limited mobility of its components, its actual seismic isolation effect is relatively limited.

[0005] There is a need for an integrated seismic isolation system based on seismic isolation bearings to solve the above problems. Summary of the Invention

[0006] This invention addresses the problem that existing technologies use seismic isolation bearings as the main seismic isolation structure to achieve rigid seismic isolation through semi-rigid contact, but the actual seismic isolation effect is relatively limited due to the limited mobility of its components. This invention provides an integrated seismic isolation system based on seismic isolation bearings, thus solving the aforementioned problems.

[0007] This utility model provides an integrated seismic isolation system based on seismic isolation bearings, including seismic isolation bearings, several pairs of supplementary buffers, upper supports and lower supports. The upper supports and lower supports are vertically arranged reinforced concrete column structures. The vertical projection shapes of the upper supports and lower supports are the same and overlap. A gap is provided between the upper supports and lower supports. The seismic isolation bearings are arranged between the upper supports and lower supports to connect them. The supplementary buffers are arranged between the upper supports and lower supports and are arranged in pairs on opposite sides of the seismic isolation bearings. The included angle between adjacent supplementary buffers is equal. The supplementary buffers are horizontally placed U-shaped structures.

[0008] The present invention discloses an integrated seismic isolation system based on a seismic isolation bearing. In a preferred embodiment, the seismic isolation bearing includes an upper bearing plate, a lower bearing plate, a lead core, several steel plates, and an elastic column. Both the upper and lower bearing plates are flat plate structures, arranged horizontally and parallel to each other. The elastic column is an elastic column body, positioned between the upper and lower bearing plates, connecting the bottom surface of the upper bearing plate and the top surface of the lower bearing plate. The top surface of the lower bearing plate has a spherical notch recess that matches the outer diameter of the elastic column. The intersection of the notch recess and the top surface of the lower bearing plate is circular. The bottom surface of the elastic column is provided with a notch recess... Inside the recess, the lead core is a cylindrical structure with a diameter smaller than that of the elastic column. The lead core is set inside the elastic column and is coaxial with the elastic column. A through hole for the lead core is vertically set in the middle of the upper support plate. The upper end of the lead core passes through the through hole of the upper support plate. The bottom surface of the lead core is in contact with the inner surface of the groove of the lower support plate. An elastic patch is set between the top surface of the lead core and the bottom surface of the upper support. The steel plate is an annular plate with a diameter smaller than that of the elastic column. The steel plates are evenly and parallel to each other inside the elastic column. The hole in the middle of the steel plate is for the lead core. The spaces between adjacent steel plates are filled with the elastic material of the elastic column.

[0009] The present invention discloses an integrated seismic isolation system based on a seismic isolation bearing. In a preferred embodiment, the supplementary buffer includes a top connecting plate, a bottom connecting plate, and an arc-shaped connecting section. Both the top and bottom connecting plates are plate-shaped structures, and are arranged opposite to each other. The top and bottom connecting plates are connected by an arc-shaped connecting section, which is a plate-shaped structure with an arc-shaped cross-section. The top connecting plate is fastened to the lower surface of the upper support, and the bottom connecting plate is fastened to the upper surface of the lower support. The opening of the arc-shaped connecting section faces the centerline of the seismic isolation bearing.

[0010] The beneficial effects of this utility model are as follows:

[0011] Existing elastic panels are often based on columnar structures with elastic designs, but they have limited space for movement and seismic resistance, especially when the building's weight is high. The material is often compressed, making effective movement difficult and leading to stress concentration and release. This invention's seismic isolation system is a two-stage design. The device uses a spherical surface structure for movable contact and releases stress through friction pairs to achieve effective seismic isolation. To maximize stress release, the lower end of the device eliminates the lead core constraint and adds a U-shaped plate in conjunction with the spherical cap structure for stress release. The stress release paths of this device are all curved, allowing compressive stress to be released in the opposite direction. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of an integrated seismic isolation system based on seismic isolation bearings.

[0013] Figure 2 A schematic diagram of a seismic isolation system based on a seismic isolation bearing;

[0014] Figure 3 This is a schematic diagram of a supplementary buffer for an overall seismic isolation system based on seismic isolation bearings.

[0015] Figure label:

[0016] 1. Seismic isolation bearing; 11. Upper bearing plate; 12. Lower bearing plate; 13. Lead core; 14. Steel plate; 15. Elastic column; 2. Supplementary buffer; 21. Top connecting plate; 22. Bottom connecting plate; 23. Arc-shaped connecting section; 3. Upper support pier; 4. Lower support pier. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] Example 1

[0019] like Figure 1 As shown, an integrated seismic isolation system based on seismic isolation bearings includes seismic isolation bearings 1, several pairs of supplementary buffers 2, upper supports 3 and lower supports 4. The upper supports 3 and lower supports 4 are vertically arranged reinforced concrete column structures. The vertical projection shapes of the upper supports 3 and lower supports 4 are the same and overlap. A gap is provided between the upper supports 3 and lower supports 4. The seismic isolation bearings 1 are arranged between the upper supports 3 and lower supports 4 to connect them. The supplementary buffers 2 are arranged between the upper supports 3 and lower supports 4 and are arranged in pairs on opposite sides of the seismic isolation bearings 1. The included angle between adjacent supplementary buffers 2 is equal. The supplementary buffers 2 are horizontally placed U-shaped structures.

[0020] like Figure 2 As shown, the seismic isolation bearing 1 includes an upper bearing plate 11, a lower bearing plate 12, a lead core 13, several steel plates 14, and an elastic column 15. Both the upper bearing plate 11 and the lower bearing plate 12 are flat plate structures, arranged horizontally and parallel to each other. The elastic column 15 is an elastic column body, positioned between the upper bearing plate 11 and the lower bearing plate 12, connecting the bottom surface of the upper bearing plate 11 and the top surface of the lower bearing plate 12. The top surface of the lower bearing plate 12 has a spherical notch recess that matches the outer diameter of the elastic column 15. The intersection of the notch and the top surface of the lower bearing plate 12 is circular. The bottom surface of the elastic column 15 is located within the notch. The lead core 13 is a cylindrical structure. The diameter is smaller than that of the elastic column 15, and the lead core 13 is set inside the elastic column 15 and coaxial with the elastic column 15. The middle of the upper support plate 11 has a through hole that matches the lead core 13. The upper end of the lead core 13 passes through the through hole of the upper support plate 11. The bottom surface of the lead core 13 matches the groove and contacts the inner surface of the groove of the lower support plate 12. An elastic patch is set between the top surface of the lead core 13 and the bottom surface of the upper support 3. The steel plate 14 is an annular piece. The diameter of the steel plate 14 is smaller than that of the elastic column 15. The steel plates 14 are evenly and parallel to each other inside the elastic column 15. The hole in the middle of the steel plate 14 matches the lead core 13. The space between adjacent steel plates 14 is filled with the elastic material of the elastic column 15.

[0021] like Figure 3 As shown, the supplementary buffer 2 includes a top connecting plate 21, a bottom connecting plate 22, and an arc-shaped connecting section 23. Both the top connecting plate 21 and the bottom connecting plate 22 are plate-shaped structures. The top connecting plate 21 and the bottom connecting plate 22 are arranged opposite to each other and connected by the arc-shaped connecting section 23. The arc-shaped connecting section 23 is a plate-shaped structure with an arc-shaped cross section. The top connecting plate 21 is fastened to the lower surface of the upper support 3, and the bottom connecting plate 22 is fastened to the upper surface of the lower support 4. The opening of the arc-shaped connecting section 23 faces the centerline direction of the seismic isolation bearing 1.

[0022] Since unidirectional supplementary buffers may cause overturning problems, supplementary buffers in this device must be used in pairs.

[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An integral seismic isolation system based on a seismic isolation bearing (1), characterized in that: It includes a seismic isolation bearing (1), several pairs of supplementary buffers (2), an upper support (3) and a lower support (4). The upper support (3) and the lower support (4) are vertically arranged reinforced concrete column structures. The upper support (3) and the lower support (4) have the same vertical projection shape and overlap. There is a gap between the upper support (3) and the lower support (4). The seismic isolation bearing (1) is arranged between the upper support (3) and the lower support (4) to connect the upper support (3) and the lower support (4). The supplementary buffers (2) are arranged between the upper support (3) and the lower support (4) and are arranged in pairs on opposite sides of the seismic isolation bearing (1). The included angle between each adjacent supplementary buffer (2) is equal. The supplementary buffer (2) is a horizontal U-shaped structure.

2. The integral seismic isolation system based on the seismic isolation bearing (1) according to claim 1, characterized in that: The seismic isolation bearing (1) includes an upper bearing plate (11), a lower bearing plate (12), a lead core (13), several steel plates (14), and an elastic column (15). The upper bearing plate (11) and the lower bearing plate (12) are both flat plate structures. The upper bearing plate (11) and the lower bearing plate (12) are arranged horizontally and parallel to each other. The elastic column (15) is an elastic column body, which is arranged between the upper bearing plate (11) and the lower bearing plate (12), connecting the bottom surface of the upper bearing plate (11) and the top surface of the lower bearing plate (12). The top surface of the lower bearing plate (12) is provided with a spherical notch recess that matches the outer diameter of the elastic column (15). The intersection of the notch and the top surface of the lower bearing plate (12) is circular. The bottom surface of the elastic column (15) is located in the notch. The lead core (13) is a cylindrical structure, and the diameter of the lead core (13) is... The lead core (13) is smaller than the elastic column (15) and is located inside the elastic column (15) and coaxial with the elastic column (15). The upper support plate (11) has a through hole in the middle that matches the lead core (13). The upper end of the lead core (13) passes through the through hole of the upper support plate (11). The bottom surface of the lead core (13) matches the groove and contacts the inner surface of the groove of the lower support plate (12). An elastic patch is provided between the top surface of the lead core (13) and the bottom surface of the upper support (3). The steel plate (14) is an annular piece. The diameter of the steel plate (14) is smaller than the diameter of the elastic column (15). The steel plates (14) are evenly arranged parallel to each other inside the elastic column (15). The hole in the middle of the steel plate (14) matches the lead core (13). The adjacent steel plates (14) are filled with the elastic material of the elastic column (15).

3. The integral seismic isolation system based on the seismic isolation bearing (1) according to claim 1, characterized in that: The supplementary buffer (2) includes a top connecting plate (21), a bottom connecting plate (22), and an arc-shaped connecting section (23). The top connecting plate (21) and the bottom connecting plate (22) are both plate structures. The top connecting plate (21) and the bottom connecting plate (22) are arranged opposite to each other. The top connecting plate (21) and the bottom connecting plate (22) are connected by the arc-shaped connecting section (23). The arc-shaped connecting section (23) is a plate structure with an arc-shaped cross section. The top connecting plate (21) is fastened to the lower surface of the upper support (3), and the bottom connecting plate (22) is fastened to the upper surface of the lower support (4). The arc-shaped connecting section (23) opens towards the centerline of the seismic isolation bearing (1).

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