A steel support with self-resetting function

Abstract

The present invention belongs to the technical field of bridge and building seismic (vibration) reduction and isolation, and relates to a bearing, specifically to a steel bearing with a self-resetting function, including an upper bearing plate, an intermediate lining plate and a lower bearing plate, wherein an intermediate lining plate is arranged between the upper bearing plate and the lower bearing plate; it also includes a limit plate and a steel elastic body elastic device; the upper bearing plate is provided with limit plates all around, and the lower bearing plate is connected to the limit plates all around the upper bearing plate through horizontally retractable steel elastic body elastic devices. The present invention provides limit plates in the four directions of the front, back, left and right in the horizontal direction of the upper bearing plate, and the lower bearing plate is connected to the four limit plates on the upper bearing plate in the four directions of the front, back, left and right in the horizontal direction through four steel elastic body elastic devices, so that the seismic resistance, vibration reduction and buffering functions in the horizontal direction can be realized, and a stable restoring force can be provided to promote the return of the bridge and building structure above the bearing.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge and building seismic (vibration) reduction and isolation, and relates to a support, in particular to a steel support with a self-resetting function. Background Art

[0002] At present, bearings are widely used on bridges and buildings at home and abroad, and are important equipment for seismic isolation (vibration) of bridges and buildings. The bearings are set between the lower foundation and the upper structure of bridges and buildings, and play the role of bearing the weight of the upper structure, fixing the relative position of bridges and buildings, and constraining or releasing rotation and displacement. When bridges and buildings undergo horizontal displacement and deformation due to factors such as temperature, wind load, and seismic load, relative displacement occurs between the upper bearing plate, the middle lining plate (also known as the spherical crown), and the lower bearing plate of the bearing to match the horizontal deformation of the bridge and building and protect the safety of the upper structure. In theory, when the load disappears, the horizontal displacement and deformation of the bridge and building should disappear, allowing the overall structure to return to normal.

[0003] At present, the steel bearings commonly used in bridges and buildings do not have the function of automatic return in the horizontal direction; although the spherical seismic isolation bearings or friction pendulum bearings have the function of automatic return in the horizontal direction, the horizontal restoring force is unstable and the restoring effect is poor, and height differences will also occur. Summary of the invention

[0004] In order to overcome the shortcomings of the above-mentioned prior art, the purpose of the present invention is to provide a steel elastic body seismic and vibration-damping steel bearing with self-resetting function suitable for bridges and buildings, which can realize seismic resistance, vibration reduction and buffering functions in the horizontal direction, and provide stable restoring force to promote the return of the bridge and building structure above the bearing.

[0005] To achieve the above-mentioned purpose, the technical solution of the present invention is a steel support with a self-resetting function, including an upper support plate, an intermediate lining plate and a lower support plate, wherein an intermediate lining plate is arranged between the upper support plate and the lower support plate; it also includes a limit plate and a steel elastic body elastic device; limit plates are arranged around the upper support plate, and the four sides of the lower support plate are respectively connected to the limit plates around the upper support plate through a horizontally retractable steel elastic body elastic device.

[0006] Furthermore, the steel elastic body elastic device includes an elastic element; one side of the elastic element is connected to the limit plate through a connecting piece, and the other side is connected to the lower support plate through a connecting piece.

[0007] Furthermore, there are at least two elastic elements, and the elastic elements located on the same side of the lower support plate are arranged to face each other or to face away from each other.

[0008] Furthermore, the elastic elements on the two opposite sides of the lower support plate are arranged in a one-to-one correspondence.

[0009] Furthermore, the elastic element is an A-type structure or a bow-type structure.

[0010] Furthermore, the elastomeric element includes a first steel leaf spring and a second steel leaf spring, one end of the first steel leaf spring is connected to the limit plate through a connecting piece, one end of the second steel leaf spring is connected to the lower support plate through a connecting piece, and the other end of the first steel leaf spring is integrally connected to the other end of the second steel leaf spring or fixedly connected through an anchor.

[0011] Furthermore, one end of the first steel leaf spring and one end of the second steel leaf spring are both provided with mounting holes for the connecting member to pass through, and the mounting holes are oval holes.

[0012] Furthermore, a washer is sleeved on the portion of the connecting member located between the first steel leaf spring and the limiting plate, and a washer is sleeved on the portion of the connecting member located between the second steel leaf spring and the lower support plate.

[0013] Furthermore, an upper stainless steel plate is installed on the bottom surface of the upper support plate, and an upper wear-resistant plate is arranged between the upper stainless steel plate and the middle lining plate.

[0014] Furthermore, a lower wear-resistant plate is provided between the middle lining plate and the lower support plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) The steel elastic body anti-seismic and vibration-damping steel bearing provided by the present invention is provided with limit plates in the four directions of the upper bearing plate in the horizontal direction, and the lower bearing plate is connected to the four limit plates on the upper bearing plate in the four directions of the horizontal direction through four steel elastic body elastic devices, respectively, so as to realize the anti-seismic, vibration-damping and buffering functions in the horizontal direction, and provide a stable restoring force to promote the return of the bridge and building structure above the bearing; it can solve the problems of the existing bearing having no automatic return function in the horizontal direction or unstable restoring force in the horizontal direction and poor return effect;

[0017] (2) The steel elastic body elastic device of the steel elastic body anti-seismic and vibration-damping steel support provided by the present invention adopts an elastic body element of A-type structure or bow-type structure. When the bridge or building undergoes horizontal displacement and deformation due to factors such as temperature, wind load, and earthquake load, one side of the steel elastic body elastic device is subjected to tension and the other side is subjected to compression. Both sides are subjected to force at the same time, and the restoring force is stable and uniform. At the same time, compared with the traditional arc leaf spring support with force on one side, the steel elastic body material can be saved by half, which is more economical.

[0018] (3) The steel elastic body anti-seismic and vibration-damping steel bearing provided by the present invention is limited by the limit plate on the outer side of the lower bearing plate to prevent the bridge beam from falling and the building from deforming too much;

[0019] (4) The mounting holes for the connecting parts to pass through the two steel leaf springs of the elastic element of the steel elastic body anti-seismic and vibration-damping steel support provided by the present invention are oval holes, which can realize the relative sliding of the steel elastic body elastic device and the limit plate and the relative sliding of the steel elastic body elastic device and the lower support plate, meet the horizontal rotation angle, and provide a stable restoring force;

[0020] (5) The steel elastic body elastic device provided by the present invention can provide a stable horizontal restoring force and will not produce height difference during operation, thus promoting the upper structure to return to its initial position and having no impact on bridge driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic diagram of the structure of a steel elastic body anti-seismic and vibration-damping steel support with a self-resetting function provided in an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of the arrangement of a steel elastic body elastic device of a steel elastic body anti-vibration and vibration-damping steel support with a self-resetting function provided in an embodiment of the present invention;

[0024] Figure 3 A structural front view of an elastic element of a steel elastic body anti-seismic and vibration-damping steel support with a self-resetting function provided in an embodiment of the present invention;

[0025] Figure 4 A top view of the structure of the elastic element of the steel elastic body anti-seismic and vibration-damping steel support with self-resetting function provided in an embodiment of the present invention;

[0026] Figure 5 A top view of the structure of the elastic element of the steel elastic body anti-seismic and vibration-damping steel support with self-resetting function provided in an embodiment of the present invention;

[0027] In the figure: 1. upper support plate, 2. upper stainless steel plate, 3. upper wear-resistant plate, 4. middle lining plate, 5. lower wear-resistant plate, 6. lower support plate, 7. steel elastic body elastic device, 8. connecting piece, 9. limit plate, 10. mounting hole, 11. anchor, 12. elastic body element. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not 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.

[0029] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0031] like Figure 1-Figure 2 As shown, an embodiment of the present invention provides a steel support with a self-resetting function, including an upper support plate 1, an intermediate lining plate 4 and a lower support plate 6, wherein an intermediate lining plate 4 is arranged between the upper support plate 1 and the lower support plate 6; it also includes a limit plate 9 and a steel elastic body elastic device 7; limit plates 9 are arranged around the upper support plate 1, and the limit plates 9 are fixedly connected to the upper support plate 1; the four sides of the lower support plate 6 are respectively connected to the limit plates 9 around the upper support plate 1 through the horizontally retractable steel elastic body elastic device 7. In this embodiment, the upper support plate 1 is provided with limiting plates 9 in the four directions of front, back, left and right in the horizontal direction. The lower support plate 6 is connected to the four limiting plates 9 on the upper support plate 1 in the four directions of front, back, left and right in the horizontal direction through four steel elastic elastic devices 7 respectively. One side of the horizontally retractable steel elastic elastic device 7 is connected to the lower support plate 6, and the other side is connected to the limiting plate 9. While meeting the horizontal displacement, it can realize the anti-seismic, vibration reduction and buffering functions in the horizontal direction, and provide a stable restoring force to promote the return of the upper bridge and building structure of the support; and through the limiting effect of the limiting plate 9 on the outer side of the lower support plate 6, it can prevent the bridge beam from falling and the building from deforming too much.

[0032] Further, the steel elastic body elastic device 7 includes an elastic element 12; one side of the elastic element 12 is connected to the limit plate 9 through a connecting piece 8, and the other side is connected to the lower support plate 6 through a connecting piece 8. Further, the elastic element 12 is an A-type structure or a bow-type structure. The steel elastic body anti-seismic and vibration-damping steel support of this embodiment adopts an elastic element 12 of an A-type structure or a bow-type structure. When the bridge or building undergoes horizontal displacement and deformation due to factors such as temperature, wind load, and earthquake load, one side of the steel elastic body elastic device 7 is pulled and one side is compressed, and the restoring force is stable and uniform. Compared with the conventional single-sided arc plate-shaped leaf spring structure, the advantage of this A-type structure or bow-type structure of the elastic element 12 is that one side of the steel elastic body elastic device 7 is pulled and one side is compressed, and the forces are in the same direction. Compared with the conventional single-sided arc plate-shaped leaf spring structure, under the condition of consistent elastic stiffness, the material can be saved by half, and at the same time, the wear, deformation, and jamming problems between the arc tip and the limit plate 9 during the use of the conventional single-sided arc plate-shaped leaf spring are avoided.

[0033] The steel elastic body elastic device 7 of this embodiment can be provided with a single elastic body element 12, or multiple elastic body elements 12 can be provided. The design is specifically based on the required horizontal restoring force, horizontal stiffness, horizontal displacement, etc., and the number, structural size, and arrangement form are changed to meet the design requirements. Preferably, there are at least two elastic body elements 12, and the elastic body elements 12 located on the same side of the lower support plate 6 are arranged facing each other (the openings of the arched structures or A-shaped structures of the two elastic body elements 12 are opposite) or arranged opposite to each other (the openings of the arched structures or A-shaped structures of the two elastic body elements 12 are opposite to each other). Of course, the openings of the two elastic body elements 12 on the same side of the lower support plate 6 can also be made to face the same direction, and the distance between the elastic body elements 12 can be the same. Furthermore, the elastic body elements 12 on the opposite sides of the lower support plate 6 are arranged one by one. No matter how many elastic body elements 12 are arranged on the steel elastic body elastic device 7, the positions and numbers of the elastic body elements 12 on the opposite sides of the lower support plate 6 correspond one by one to ensure stable and uniform restoring force.

[0034] Furthermore, the elastic element 12 includes a first steel leaf spring and a second steel leaf spring, one end of the first steel leaf spring is connected to the limit plate 9 through a connecting member 8, and one end of the second steel leaf spring is connected to the lower support plate 6 through a connecting member 8; the other end of the first steel leaf spring is integrally connected with the other end of the second steel leaf spring, such as Figure 5 As shown, or the other end of the first steel leaf spring is fixedly connected to the other end of the second steel leaf spring by an anchor 11, as shown Figure 4 As shown, the self-anchoring can be performed by bolting or riveting. The steel elastic body elastic device 7 provided by the present invention can provide a stable horizontal restoring force, and will not produce height difference during operation, so as to promote the upper structure to return to the initial position and have no impact on bridge driving.

[0035] Furthermore, if Figure 3 As shown, one end of the first steel leaf spring and one end of the second steel leaf spring are both provided with mounting holes for the connecting member 8 to pass through. Preferably, the mounting hole cooperating with the connecting member 8 is a waisted circular hole, which can realize the relative sliding of the steel elastic body elastic device 7 and the limit plate 9 and the relative sliding of the steel elastic body elastic device 7 and the lower support plate 6, meet the horizontal rotation angle, and provide a stable restoring force.

[0036] Furthermore, a washer is sleeved on the portion of the connecting member 8 between the first steel leaf spring and the limiting plate 9, and a washer is sleeved on the portion of the connecting member 8 between the second steel leaf spring and the lower support plate 6. In this embodiment, when the first steel leaf spring is connected to the limiting plate 9 and the second steel leaf spring is connected to the lower support plate 6, a material with a small friction coefficient and excellent wear resistance can be added between the first steel leaf spring and the limiting plate 9 and between the second steel leaf spring and the lower support plate 6 as a washer, and a lubricating device can be added, or lubricant and grease can be applied to reduce the friction force in the vertical direction of the displacement direction of the limiting plate 9 and the lower support plate 6, respectively. When the support realizes bidirectional displacement, the steel elastic body elastic device 7 will not be damaged due to friction, and the internal force of the support itself is reduced, and the restoring force is more stable.

[0037] Furthermore, an upper stainless steel plate 2 is installed on the bottom surface of the upper support plate 1, and the upper stainless steel plate 2 is welded with the upper support plate 1 to form a whole, and an upper wear-resistant plate 3 is arranged between the upper stainless steel plate 2 and the intermediate lining plate 4, such as Figure 1 As shown, the bottom surface of the middle liner 4 is an upper concave spherical surface, and the top surface of the middle liner 4 is an upper convex spherical surface matching the upper concave spherical surface. An upper wear-resistant plate 3 is arranged between the upper concave spherical surface and the upper convex spherical surface. Furthermore, a lower wear-resistant plate 5 is arranged between the middle liner 4 and the lower support plate 6, as shown in FIG. Figure 1 As shown, the top of the lower support plate 6 is a concave spherical surface, the bottom surface of the middle lining plate 4 is a convex spherical surface, and the lower wear-resistant plate 5 is arranged between the concave spherical surface and the convex spherical surface.

[0038] When the steel elastic body anti-seismic and vibration-damping steel bearing of this embodiment is installed on a bridge or building, if the bridge or building undergoes horizontal displacement and deformation due to factors such as temperature, wind load, and earthquake load, relative displacement occurs between the upper bearing plate 1, the middle lining plate 4, and the lower bearing plate 6 of the bearing, and finally the upper bearing plate 1 of the bearing produces a horizontal displacement and deviates from the initial position; one side of the horizontally retractable steel elastic body elastic device 7 is connected to the lower bearing plate 6, and the other side is connected to the limit plate 9. When the unilateral gap between the limit plate 9 and the lower bearing plate 6 increases, the horizontal restoring force of the corresponding steel elastic body elastic device 7 increases steadily. When the unilateral gap between the limit plate 9 and the lower bearing plate 6 decreases, the corresponding steel elastic body elastic device 7 is horizontally The restoring force is steadily reduced or even reversed; since the steel elastic body elastic device 7 of the bearing is symmetrically arranged on all sides, elastic body devices are provided in two longitudinal directions of the bridge and two transverse directions of the bridge, or two main sliding directions of the building and two auxiliary sliding directions, a total of four horizontal directions. When the bearing is displaced, one side is subjected to tension and the other side is subjected to compression, shock absorption and buffering can be achieved in any horizontal sliding direction, and a stable horizontal restoring force can be output to displace the upper bearing plate 1 and the lower bearing plate 6 back to their original positions, thereby playing the horizontal shock absorption (vibration) and buffering functions, protecting the safety of the bridge and the superstructure of the building. At the same time, since the steel elastic body elastic devices 7 on both sides are functional, the utilization efficiency of the elastomer is improved.

[0039] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the scope of protection of the present invention.

Claims

1. A steel support with a self-resetting function, comprising an upper support plate, an intermediate lining plate and a lower support plate, wherein an intermediate lining plate is arranged between the upper support plate and the lower support plate; characterized in that: It also includes a limit plate and a steel elastic body elastic device; the upper support plate is provided with a limit plate around it, the limit plate is fixedly connected to the upper support plate, and the lower support plate is connected to the limit plates around it through the horizontally retractable steel elastic body elastic device; The upper support plate is provided with limit plates in the four directions of front, back, left and right in the horizontal direction. The lower support plate is connected to the four limit plates on the upper support plate in the four directions of front, back, left and right in the horizontal direction through four steel elastic elastic devices respectively. One side of the horizontally retractable steel elastic elastic device is connected to the lower support plate, and the other side is connected to the limit plate. While meeting the horizontal displacement, it can realize the anti-seismic, vibration reduction and buffering functions in the horizontal direction, and provide a stable restoring force to promote the return of the upper bridge and building structure of the support, and the limiting effect of the limit plate on the outer side of the lower support plate can prevent the bridge beam from falling and the building from deforming too much; the steel elastic elastic device includes an elastic element; one side of the elastic element is connected by The connecting piece is connected to the limit plate, and the other side is connected to the lower support plate through a connecting piece; the elastic element is an A-type structure or a bow-type structure. When the bridge or building undergoes horizontal displacement and deformation due to factors such as temperature, wind load, and earthquake load, one side of the steel elastic body elastic device is subjected to tension and one side is subjected to compression. Both sides are subjected to force at the same time, and the restoring force is stable and uniform; there are at least two elastic elements, which are arranged facing each other or back to back between the elastic elements on the same side of the lower support plate; the elastic elements on the opposite sides of the lower support plate are arranged one-to-one, and the positions and numbers of the elastic elements on the opposite sides of the lower support plate correspond one-to-one to ensure that the restoring force is stable and uniform; the elastic element includes a first steel plate spring and a second steel leaf spring, one end of the first steel leaf spring is connected to the limit plate through a connecting piece, one end of the second steel leaf spring is connected to the lower support plate through a connecting piece, and the other end of the first steel leaf spring is connected to the other end of the second steel leaf spring in an integral manner or fixedly connected by an anchor; the steel elastic body elastic device can provide a stable horizontal restoring force, and will not produce a height difference during operation, so as to promote the upper structure to return to the initial position and have no effect on bridge driving; one end of the first steel leaf spring and one end of the second steel leaf spring are both provided with a mounting hole for the connecting piece to pass through, and the mounting hole is a waist-round hole, which can realize the relative sliding of the steel elastic body elastic device and the limit plate and the steel elastic body elastic device The relative sliding with the lower support plate satisfies the horizontal rotation angle and provides a stable restoring force; a washer is sleeved on the part of the connecting member located between the first steel leaf spring and the limit plate, and a washer is sleeved on the part of the connecting member located between the second steel leaf spring and the lower support plate, so as to reduce the friction force in the vertical direction of the displacement direction of the limit plate and the lower support plate respectively. When the support realizes bidirectional displacement, the elastic device of the steel elastic body will not be damaged by the friction force, and at the same time, the internal force of the support itself is reduced, and the restoring force is more stable; an upper stainless steel plate is installed on the bottom surface of the upper support plate, and the upper stainless steel plate and the upper support plate are welded to form a whole, and an upper wear-resistant plate is arranged between the upper stainless steel plate and the intermediate lining plate;A lower wear-resistant plate is arranged between the middle lining plate and the lower support plate, the top of the lower support plate is a concave spherical surface, the bottom surface of the middle lining plate is a convex spherical surface, and the lower wear-resistant plate is arranged between the concave spherical surface and the convex spherical surface; when the steel support with self-resetting function is installed on a bridge or building, if the bridge or building undergoes horizontal displacement and deformation due to factors such as temperature, wind load, and earthquake load, relative displacement occurs between the upper support plate, the middle lining plate, and the lower support plate of the support, and finally the upper support plate of the support produces horizontal displacement and deviates from the initial position; one side of the horizontally retractable steel elastic body elastic device is connected to the lower support plate, and the other side is connected to the limit plate. When the limit plate is in contact with the lower support plate When the gap on one side increases, the horizontal restoring force of the corresponding steel elastic body elastic device increases steadily. When the gap on one side between the limit plate and the lower support plate decreases, the horizontal restoring force of the corresponding steel elastic body elastic device decreases steadily or even reverses. Since the steel elastic body elastic device of this support is symmetrically arranged all around, when the support is displaced, one side is pulled and the other side is compressed, it can achieve shock absorption and buffering in any horizontal sliding direction, and output a stable horizontal restoring force, so that the upper support plate and the lower support plate are displaced and returned to their positions, playing the horizontal shock absorption and buffering functions, protecting the safety of the bridge and the upper structure of the building. At the same time, since the steel elastic body elastic devices on both sides are in effect, the utilization efficiency of the elastic body is improved. ;

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