Anti-lift beam curved spherical seismic isolation bearing

Abstract

The invention discloses a curved spherical anti-lift beam seismic isolation bearing, comprising an upper seat plate, a lower seat plate, an upper lining plate, a middle lining plate, and a lower lining plate; a spherical stainless steel plate is welded and pasted inside the concave spherical surface of the upper seat plate; the upper and lower side surfaces of the upper lining plate are both spherical, a spherical wear-resistant plate is inlaid inside the spherical surface, and the upper spherical wear-resistant plate of the upper lining plate and the spherical stainless steel plate of the upper seat plate form an upper spherical sliding pair; the side surface of the middle lining plate is a spherical surface, which is welded with spherical stainless steel, and the spherical stainless steel and the lower spherical wear-resistant plate of the upper lining plate form a middle spherical sliding pair; the lower side surface of the middle lining plate is a plane, a wear-resistant plate is inlaid inside the plane, and a plane sliding pair is formed with the upper plane stainless steel plate of the lower lining plate; the upper side surface of the lower lining plate is a plane, and a plane stainless steel plate is welded inside the plane; the lower side surface of the lower lining plate is a spherical surface, a spherical wear-resistant plate is inlaid inside the spherical surface, and a lower spherical sliding pair is formed with the spherical stainless steel plate of the lower seat plate. The invention has a simple structure and a reasonable design, thereby achieving the effect of shock absorption and energy consumption.

Description

Technical Field

[0001] The invention belongs to the technical field of beam bridge bearings, and in particular relates to a hyperbolic or tri-curved spherical seismic isolation bearing for preventing beam lift. Background Art

[0002] As important social infrastructure, buildings and bridges have the characteristics of large investment, strong public nature, and difficult maintenance and management. At the same time, they are an important part of the earthquake disaster prevention management system. Improving the seismic performance of buildings and bridges is one of the most important basic measures to reduce earthquake losses and strengthen regional safety.

[0003] At present, the hyperbolic seismic isolation bearings are accompanied by large vertical lift during daily horizontal sliding, resulting in large beam lifting phenomenon. The different upward displacements of each pier will cause the beam to produce unequal bearing settlements, causing uneven driving and secondary internal forces of the main beam, bringing safety hazards to driving and bridge structures. At the same time, the bearings are very likely to slide out of the designed displacement under the action of earthquake forces. If no limit structure is set, it is easy to cause the danger of beam falling.

[0004] Therefore, in view of the problems existing in the existing hyperbolic seismic isolation bearings, it is urgent and necessary to effectively reduce and control the lifting displacement of the bearings, limit the sliding displacement of the bearings and avoid the danger of falling beams. Summary of the invention

[0005] The object of the present invention is to provide a curved spherical anti-lift beam isolation bearing.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] The anti-lift beam curved spherical seismic isolation bearing is a three-curved spherical bearing, including an upper seat plate, a lower seat plate, an upper lining plate, a middle lining plate, a lower lining plate, a limit plate, and a limit pin; the lower side surface of the upper seat plate is a concave spherical surface, and a spherical stainless steel plate is welded and pasted inside the concave spherical surface; the upper and lower side surfaces of the upper lining plate are both spherical surfaces, and a spherical wear-resistant plate is embedded in the spherical surface, wherein the upper spherical wear-resistant plate of the upper lining plate and the spherical stainless steel plate of the upper seat plate constitute an upper spherical sliding pair; the side surface of the middle lining plate It is a spherical surface, on which spherical stainless steel is welded, and the spherical stainless steel and the lower spherical wear-resistant plate of the upper lining plate form a middle spherical sliding pair; the lower side surface of the middle lining plate is a plane, in which a wear-resistant plate is embedded, and forms a plane sliding pair with the upper plane stainless steel plate of the lower lining plate; the upper side surface of the lower lining plate is a plane, in which a flat stainless steel plate is welded; the lower side surface of the lower lining plate is a spherical surface, in which a spherical wear-resistant plate is embedded, and forms a lower spherical sliding pair with the spherical stainless steel plate of the lower seat plate.

[0008] The limit plate and the lower seat plate are connected by a limit pin, which limits the lower lining plate in the lower seat plate; a protruding ring structure is provided on the periphery of the lower lining plate, and the upper lining plate is circular in shape; an anchoring assembly is provided on the upper seat plate.

[0009] The working mode of the three-curved spherical seismic isolation bearing is as follows: when the upper seat plate rotates, the upper lining plate and the middle lining plate rotate relative to each other at the middle spherical sliding pair; when the bearing is working in daily sliding mode, the middle lining plate and the lower lining plate move relative to each other at the plane sliding pair; when an earthquake occurs, the seismic displacement is greater than the gap between the upper lining plate and the lower lining plate, the upper lining plate and the lower lining plate contact, and the upper seat plate and the upper lining plate move relative to each other first. When the thrust of the upper bearing on the upper lining plate is greater than the shear force of the limit pin, the limit pin is sheared, and the lower lining plate together with the middle lining plate and the upper lining plate move between the upper and lower bearing plates.

[0010] The anti-lifting beam curved spherical seismic isolation bearing is a hyperbolic spherical bearing, including an upper seat plate, a lower seat plate, an upper lining plate, a lower lining plate, a limit pin and a limit plate; the lower side surface of the upper seat plate is a concave spherical surface, and a spherical stainless steel plate is welded inside the concave spherical surface; the upper side surface of the upper lining plate is a spherical surface, and a spherical wear-resistant plate is embedded in the spherical surface, and the spherical wear-resistant plate of the upper lining plate and the spherical stainless steel plate of the upper seat plate constitute an upper spherical sliding pair; the lower side surface of the upper lining plate is a plane, and a wear-resistant plate is embedded in the plane, and the wear-resistant plate and the upper plane stainless steel plate of the lower lining plate constitute a plane sliding pair; the upper side surface of the lower lining plate is a plane, and a flat stainless steel plate is welded in the plane, and the lower side surface of the lower lining plate is a spherical surface, and a spherical wear-resistant plate is embedded in the spherical surface, and the spherical wear-resistant plate and the spherical stainless steel plate of the lower seat plate constitute a lower spherical sliding pair.

[0011] The limiting plate and the lower seat plate are connected by limiting pins, so that the lower lining plate is limited in the lower seat plate; the outer periphery of the lower lining plate is provided with a protruding circular ring structure, and the upper lining plate is circular in shape.

[0012] The working mode of the hyperbolic spherical seismic isolation bearing is as follows: when the upper seat plate rotates, the upper spherical sliding pair and the lower spherical sliding pair rotate along the contact surface, the upper seat plate and the upper lining plate rotate relative to each other, and the lower seat plate and the lower lining plate rotate relative to each other; when the bearing is working in daily sliding, the contact surface of the plane sliding pair slips, and the upper lining plate and the lower lining plate move relative to each other; when an earthquake occurs, the seismic displacement is greater than the gap between the upper lining plate and the lower lining plate, the upper lining plate and the lower lining plate contact, and the upper seat plate and the upper lining plate move relative to each other first. When the thrust of the upper bearing on the upper lining plate is greater than the shear force of the limit pin, the limit pin is sheared, and the lower lining plate moves together with the upper lining plate between the upper and lower bearing plates.

[0013] The beneficial effects of the present invention are as follows: the present invention has a simple structure and a reasonable design; the upper lining plate and the middle lining plate rotate relative to each other to meet the daily rotation function of the support; the middle lining plate and the lower lining plate move relative to each other to meet the daily sliding function of the support, and there is no lifting phenomenon of the support; when an earthquake occurs, the role of the limit pin is utilized to achieve the effect of shock reduction and energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0015] Figure 1 This is a schematic structural diagram of a three-curved spherical seismic isolation bearing according to a first embodiment of the present invention;

[0016] Figure 2 This is a structural schematic diagram of a three-curved spherical seismic isolation bearing sliding to a limit position in accordance with a first embodiment of the present invention;

[0017] Figure 3 This is a schematic structural diagram of a hyperbolic spherical seismic isolation bearing according to a second embodiment of the present invention;

[0018] Figure 4 It is a structural schematic diagram of a hyperbolic spherical seismic isolation bearing sliding to a limit position in the second embodiment of the present invention;

[0019] Markings in the figure: upper seat plate 1, lower seat plate 2, upper spherical sliding pair 3, upper lining plate 4, middle spherical sliding pair 5, middle lining plate 6, plane sliding pair (7, 15), lower lining plate (8, 16), lower spherical sliding pair (9, 17), limit plate 10, limit pin 11, anchor assembly 12. DETAILED DESCRIPTION

[0020] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Embodiment 1

[0022] Anti-lift beam three-curved spherical isolation bearing, such as Figure 1-2 As shown, it includes an upper seat plate 1, a lower seat plate 2, an upper lining plate 4, a middle lining plate 6, a lower lining plate 8, a limit plate 10, a limit pin 11, and an anchor assembly 12;

[0023] The lower side of the upper seat plate 1 is a concave spherical surface, and a spherical stainless steel plate is welded and pasted inside the concave spherical surface; the upper and lower side surfaces of the upper liner plate 4 are both spherical surfaces, and a spherical wear-resistant plate is embedded in the spherical surface, wherein the upper spherical wear-resistant plate of the upper liner plate 4 and the spherical stainless steel plate of the upper seat plate 1 constitute an upper spherical sliding pair 3;

[0024] The upper side of the middle lining plate 6 is a spherical surface, which is welded with spherical stainless steel, and the spherical stainless steel and the lower spherical wear-resistant plate of the upper lining plate 4 form a middle spherical sliding pair 5; the lower side of the middle lining plate 6 is a plane, and the wear-resistant plate is embedded in the plane, and it forms a plane sliding pair 7 with the upper plane stainless steel plate of the lower lining plate 8;

[0025] The upper side of the lower lining plate 8 is a plane, in which a flat stainless steel plate is welded; the lower side of the lower lining plate 8 is a spherical surface, in which a spherical wear-resistant plate is embedded, and a lower spherical sliding pair 9 is formed with the spherical stainless steel plate of the lower seat plate 2;

[0026] The limit plate 10 and the lower seat plate 2 are connected by a limit pin 11, which limits the lower lining plate 8 in the lower seat plate 2; a protruding ring structure is provided on the periphery of the lower lining plate 8, and the upper lining plate 4 is circular in shape; an anchor assembly 12 is provided on the upper seat plate 1, and the anchor assembly 12 includes a bolt and a sleeve.

[0027] When the upper seat plate 1 rotates, the upper lining plate 4 and the middle lining plate 6 rotate relative to each other at the middle spherical sliding pair 5, satisfying the daily rotation function of the bearing; when the bearing is working in daily sliding, the middle lining plate 6 and the lower lining plate 8 move relative to each other at the plane sliding pair 7, which can satisfy the daily sliding function of the bearing, and there is no lifting phenomenon of the bearing; when an earthquake occurs, the seismic displacement is greater than the gap between the upper lining plate 4 and the lower lining plate 8, and the upper lining plate 4 and the lower lining plate 8 contact each other. First, the upper seat plate 1 and the upper lining plate 4 move relative to each other. When the thrust of the upper bearing 1 on the upper lining plate 4 is greater than the shear force of the limit pin 11, the limit pin 11 is sheared, and the lower lining plate 8 together with the middle lining plate 6 and the upper lining plate 4 move between the upper and lower bearing plates, thereby achieving the effect of shock absorption and energy consumption.

[0028] Embodiment 2

[0029] Hyperbolic spherical anti-lift beam isolation bearing, such as Figure 3-4 As shown, it includes an upper seat plate 1, a lower seat plate 2, an upper lining plate 4, a lower lining plate 16, a limit pin 11, a limit plate 10, and an anchor assembly 12;

[0030] The lower side of the upper seat plate 1 is a concave spherical surface, and a spherical stainless steel plate is welded inside the concave spherical surface; the upper side of the upper liner plate 4 is a spherical surface, and a spherical wear-resistant plate is embedded in the spherical surface. The spherical wear-resistant plate of the upper liner plate 4 and the spherical stainless steel plate of the upper seat plate 1 constitute an upper spherical sliding pair 3;

[0031] The lower side of the upper lining plate 4 is a plane, in which a wear-resistant plate is embedded. The wear-resistant plate and the upper plane stainless steel plate of the lower lining plate 16 form a plane sliding pair 15;

[0032] The upper side of the lower liner 16 is a plane, a flat stainless steel plate is welded inside the plane, and the lower side of the lower liner 16 is a spherical surface, a spherical wear-resistant plate is embedded inside the spherical surface, and the spherical wear-resistant plate and the spherical stainless steel plate of the lower seat plate 2 form a lower spherical sliding pair 17;

[0033] The limiting plate 10 and the lower seat plate 2 are connected by the limiting pin 11, which limits the lower lining plate 16 in the lower seat plate 2; the lower lining plate 16 has a protruding ring structure on the periphery, and the upper lining plate 4 is circular in shape; the upper seat plate 1 is installed with an anchor assembly 12.

[0034] When the upper seat plate 1 rotates, the upper spherical sliding pair 3 and the lower spherical sliding pair 17 rotate along the contact surface, the upper seat plate 1 and the upper lining plate 4 rotate relative to each other, and the lower seat plate 2 and the lower lining plate 16 rotate relative to each other, thereby satisfying the daily rotation function of the bearing; when the bearing is in daily sliding operation, the contact surface of the plane sliding pair 15 slips, and the upper lining plate 4 and the lower lining plate 16 move relative to each other, thereby satisfying the daily sliding function of the bearing, and there is no lifting phenomenon of the bearing; when an earthquake occurs, the seismic displacement is greater than the gap between the upper lining plate 4 and the lower lining plate 16, and the upper lining plate 4 and the lower lining plate 16 contact each other. First, the upper seat plate 1 and the upper lining plate 4 move relative to each other. When the thrust of the upper bearing 1 on the upper lining plate 4 is greater than the shear force of the limit pin 11, the limit pin 11 is sheared, and the lower lining plate 16 moves together with the upper lining plate 1 between the upper and lower bearing plates, thereby achieving the effect of shock absorption and energy consumption.

[0035] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. Anti-lift beam curved spherical seismic isolation bearing, the seismic isolation bearing is a three-curved spherical bearing. It is characterized in that It comprises an upper seat plate (1), a lower seat plate (2), an upper lining plate (4), a middle lining plate (6), a lower lining plate (8), a limiting plate (10), and a limiting pin (11); The lower side surface of the upper seat plate (1) is a concave spherical surface, and a spherical stainless steel plate is welded and pasted inside the concave spherical surface; the upper and lower side surfaces of the upper lining plate (4) are both spherical surfaces, and a spherical wear-resistant plate is embedded in the spherical surface, wherein the upper spherical wear-resistant plate of the upper lining plate (4) and the spherical stainless steel plate of the upper seat plate (1) form an upper spherical sliding pair (3); The upper side surface of the middle lining plate (6) is a spherical surface, which is welded with spherical stainless steel, and the spherical stainless steel and the lower spherical wear-resistant plate of the upper lining plate (4) form a middle spherical sliding pair (5); the lower side surface of the middle lining plate (6) is a plane, and the wear-resistant plate is embedded in the plane, and forms a plane sliding pair (7) with the upper plane stainless steel plate of the lower lining plate (8); The upper side of the lower lining plate (8) is a plane, in which a flat stainless steel plate is welded; the lower side of the lower lining plate (8) is a spherical surface, in which a spherical wear-resistant plate is embedded, and together with the spherical stainless steel plate of the lower seat plate (2), a lower spherical sliding pair (9) is formed; The limiting plate (10) and the lower seat plate (2) are connected via a limiting pin (11) to limit the lower lining plate (8) within the lower seat plate (2); a protruding circular ring structure is provided on the periphery of the lower lining plate (8); the upper lining plate (4) is circular in shape; an anchoring assembly (12) is provided on the upper seat plate (1); The working mode of the three-curved spherical seismic isolation bearing is: When the upper seat plate (1) rotates, the upper lining plate (4) and the middle lining plate (6) rotate relative to each other at the middle spherical sliding pair; When the support is in daily sliding operation, the middle lining plate (6) and the lower lining plate (8) move relative to each other at the plane sliding pair; When an earthquake occurs, the earthquake displacement is greater than the gap between the upper lining plate (4) and the lower lining plate (8), the upper lining plate (4) and the lower lining plate (8) come into contact, and first the upper seat plate (1) and the upper lining plate (4) move relative to each other. When the thrust of the upper seat plate (1) on the upper lining plate (4) is greater than the shear force of the limit pin (11), the limit pin (11) is sheared, and the lower lining plate (8) together with the middle lining plate (6) and the upper lining plate (4) move between the upper and lower support plates.

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