Composite progressive damping anti-beam-falling support

Abstract

The utility model discloses a composite progressive damping anti-falling beam support, including shock insulation support body, the shock insulation support body top, ground respectively are equipped with the upper seat plate, lower seat plate, and the shock attenuation piece that is installed between the upper seat plate and lower seat plate and is behind the shock insulation support body in shock attenuation, and the shock attenuation piece is inlayed in the shock insulation support body, and the shock attenuation piece both ends respectively pass through the shock insulation support body along the vertical, and the shock insulation support body side surface periphery is evenly distributed shock attenuation piece and is in the rectangular ring shape, and the shock attenuation piece upper end is inserted with the upper seat plate, and the shock attenuation piece lower end is connected with the lower seat plate. Solve the problem that the traditional shock insulation support cannot provide enough shock attenuation effect and rigidity under the earthquake working condition and is easy to fall the beam.

Description

Technical Field

[0001] This utility model relates to the field of seismic isolation technology, specifically to a composite progressive damping anti-fall beam support. Background Technology

[0002] Bridge bearings are crucial force-transfer connections between the bridge superstructure and substructure (piers and foundations). Their function is to reliably position the superstructure on the piers and bear various forces transmitted from the superstructure to the piers. Seismic isolation bearings are the most common type. They possess vertical bearing capacity and a certain degree of deformation damping, enabling them to support the bridge under normal operating conditions. However, under seismic conditions, they cannot provide sufficient damping or stiffness. If the bridge displacement exceeds the bearing's set value, there is a risk of bridge collapse, compromising the bridge's safety. Utility Model Content

[0003] To address the aforementioned technical problems, the purpose of this utility model is to provide a composite progressive damping anti-fall beam support, which solves the problem that traditional seismic isolation supports cannot provide sufficient damping effect and stiffness under seismic conditions, and are prone to beam falling.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] A composite progressive damping anti-fall beam support includes a seismic isolation bearing body. The top surface and the ground surface of the seismic isolation bearing body are respectively provided with an upper bearing plate and a lower bearing plate. A damping component that lags behind the seismic isolation bearing body during damping is installed between the upper bearing plate and the lower bearing plate. The damping component is embedded in the seismic isolation bearing body, and the two ends of the damping component pass through the seismic isolation bearing body vertically. The damping components are evenly distributed in a rectangular ring on the side of the seismic isolation bearing body. The upper end of the damping component is inserted into the upper bearing plate, and the lower end of the damping component is connected to the lower bearing plate.

[0006] The bottom surface of the upper seat plate is provided with an assembly groove that corresponds to and fits the upper end of the shock absorber. The lower end of the shock absorber is connected to the bottom surface of the lower seat plate. There is a gap between the upper end of the shock absorber and the assembly groove. The lower end of the shock absorber has a convex structure, which is embedded in the lower seat plate.

[0007] The shock-absorbing component is a shock-absorbing tenon, which is dumbbell-shaped with large ends and a small middle.

[0008] Anchor bolts are provided on the top surface of the upper seat plate and the bottom surface of the lower seat plate, and the anchor bolts are located around the circumference of the seismic isolation bearing body.

[0009] The beneficial effects of this utility model are:

[0010] (1) Under normal working conditions, the seismic isolation bearing body itself performs the functions of bearing and deformation. The seismic isolation bearing body consumes energy through rubber shear deformation. The damping component is in an elastic state and does not participate in energy consumption. Under seismic conditions, when the beam displacement exceeds the preset threshold, the damping component is triggered and works together with the seismic isolation bearing body to absorb energy, thus forming a "progressive" energy consumption system, reducing the risk of beam falling and improving the safety of the bridge.

[0011] (2) After the seismic force is greater than the yield point of the damping tenon, the damping tenon enters the plastic deformation stage after yielding. During the plastic deformation stage, the damping tenon becomes harder and its strength increases. It can provide greater resistance after the beam displacement exceeds the design threshold, further reducing the risk of beam falling. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0013] Figure 1 This is a schematic diagram of the structure of the shock absorber of this utility model located inside the seismic isolation bearing;

[0014] Figure 2 This is a schematic diagram of the cross-sectional structure of the shock absorber of this utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the shock absorber of this utility model distributed around the circumference of the seismic isolation bearing body;

[0016] Figure 4 yes Figure 3 A schematic diagram of the cross-sectional structure.

[0017] Reference numerals in the attached drawings: 1. Seismic isolation bearing body; 2. Upper bearing plate; 3. Lower bearing plate; 4. Damping tenon; 4-1. Spherical tenon ball; 4-2. Convex structure; 5. Assembly groove; 6. Anchor bolt. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0019] like Figure 1As shown, a composite progressive damping anti-fall beam support includes a seismic isolation support body 1. The top surface and the ground surface of the seismic isolation support body 1 are respectively provided with an upper support plate 2 and a lower support plate 3. A damping component that lags behind the seismic isolation support body 1 in damping is installed between the upper support plate 2 and the lower support plate 3. The damping component is embedded in the seismic isolation support body 1, and the two ends of the damping component pass through the seismic isolation support body 1 vertically. The damping components are evenly distributed in a rectangular ring on the side of the seismic isolation support body 1. The upper end of the damping component is inserted into the upper support plate 2, and the lower end of the damping component is connected to the lower support plate 3.

[0020] like Figure 1 , Figure 2 , Figure 3 As shown, the bottom surface of the upper seat plate 2 is provided with an assembly groove 5 that corresponds to and fits the upper end of the shock absorber. The lower end of the shock absorber is connected to the bottom surface of the lower seat plate 3. There is a gap between the upper end of the shock absorber and the assembly groove 5. The lower end of the shock absorber has a convex structure 402, which is embedded in the lower seat plate 3.

[0021] like Figure 2 As shown, the shock-absorbing component is a shock-absorbing tenon 4, which is dumbbell-shaped with large ends and a small middle.

[0022] like Figure 4 As shown, the top surface of the upper seat plate 2 and the bottom surface of the lower seat plate 3 are provided with anchor bolts 6, which are located around the body of the seismic isolation bearing 1.

[0023] When this utility model is used, the seismic isolation bearing body 1 is installed between the bottom surface of the beam and the top surface of the pier. Under normal working conditions, the seismic isolation bearing body 1 performs its load-bearing and deformation functions. The seismic isolation bearing body 1 dissipates energy through rubber shear deformation. The damping component is in an elastic state and does not participate in energy dissipation. Under seismic conditions, when the beam displacement exceeds the preset threshold, the damping component is triggered and works together with the seismic isolation bearing body 1 to dissipate energy, thus forming a "progressive" energy dissipation system, reducing the risk of beam collapse and improving the safety of the bridge.

[0024] The seismic isolation bearing body 1 can be any one of a high-damping seismic isolation bearing, a seismic isolation rubber bearing, or a plate rubber bearing.

[0025] Except for the connection positions at the upper and lower ends, the damping components are basically embedded in the seismic isolation bearing body 1. The friction interface between the damping components and the seismic isolation bearing body 1 slides, providing additional frictional energy dissipation. The damping components are distributed around the circumference of the seismic isolation bearing body 1, forming a ring-shaped energy dissipation system, which improves the overall seismic performance of the structure. Under earthquake action, it can uniformly dissipate energy and reduce the vibration transmitted to the upper structure. The rectangular ring shape refers to the fact that the connection between each damping component forms a rectangular ring. In this embodiment, a total of eight damping components are distributed, four of which are distributed at the four corners between the upper bearing plate 2 and the lower bearing plate 3, and the remaining four damping components are distributed in a cross shape. The rectangular ring-shaped distribution of damping components can also enhance the overall stability of the structure, so that the structure maintains good integrity under earthquake action. The damping components are evenly distributed in the axial direction, forming a multi-directional energy dissipation path, which increases the energy dissipation capacity. There is a gap between the upper end of the damping component and the mounting groove 5. Specifically, in order to achieve frictional energy dissipation between the upper end of the shock absorber and the upper seat plate 2, there is a certain gap between the upper end of the shock absorber and the inner wall of the mounting groove 5, so as to achieve the damping and shock absorption effect.

[0026] The damping component is a damping tenon 4, which is dumbbell-shaped with large ends and a small middle. The damping tenon 4 is a structural component used to absorb and dissipate seismic energy. Its working principle is based on the elastic-plastic and damping characteristics of the material. During an earthquake, it can reduce the vibration of the main structure through deformation. The damping tenon 4 achieves its damping effect through friction between the spherical tenon ball 401 at the top and the mounting groove 5. Before the yield point, the damping tenon 4 exhibits elastic behavior, meaning the deformation is reversible. After yielding, the damping tenon 4 enters the plastic deformation stage, at which point the deformation is irreversible. The damping tenon 4 exhibits hardening, increasing its strength and providing greater support for the bearing. The seismic isolation bearing 1 provides resistance, thus avoiding the risk of beam collapse when the beam displacement exceeds the threshold. Under normal working conditions, the bearing body 1 plays the role of bearing load and energy dissipation through deformation, while the damping tenon 4 participates in energy dissipation and is in the elastic deformation stage. Under seismic conditions, when the beam displacement exceeds the threshold, the damping tenon 4 starts to work, working together with the bearing body 1 to dampen and dissipate energy, preventing the transmission of seismic energy to the superstructure. When the yield point of the damping tenon 4 is exceeded, the damping tenon 4 enters the plastic deformation stage, and the deformation is irreversible. Its strength increases, providing stronger resistance and avoiding the risk of beam collapse when the beam exceeds the design limit displacement, effectively ensuring the safety of the beam.

[0027] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A composite progressive damping anti-fall beam support, characterized in that, The device includes a seismic isolation bearing body (1). The top surface and the ground surface of the seismic isolation bearing body (1) are respectively provided with an upper bearing plate (2) and a lower bearing plate (3). A damping component that lags behind the seismic isolation bearing body (1) during damping is installed between the upper bearing plate (2) and the lower bearing plate (3). The damping component is embedded in the seismic isolation bearing body (1), and the two ends of the damping component pass through the seismic isolation bearing body (1) vertically. The damping component is evenly distributed in a rectangular ring on the side of the seismic isolation bearing body (1). The upper end of the damping component is inserted into the upper bearing plate (2), and the lower end of the damping component is connected to the lower bearing plate (3).

2. The composite progressive damping anti-fall beam support according to claim 1, characterized in that, The bottom surface of the upper seat plate (2) is provided with an assembly groove (5) that corresponds to and fits the upper end of the shock absorber. The lower end of the shock absorber is connected to the bottom surface of the lower seat plate (3). There is a gap between the upper end of the shock absorber and the assembly groove (5). The lower end of the shock absorber has a convex structure (402) and the convex structure (402) is embedded in the lower seat plate (3).

3. The composite progressive damping anti-fall beam support according to claim 1, characterized in that, The shock-absorbing component is a shock-absorbing tenon (4), which is dumbbell-shaped with large ends and a small middle.

4. A composite progressive damping anti-fall beam support according to claim 2, characterized in that, The top surface of the upper seat plate (2) and the bottom surface of the lower seat plate (3) are provided with anchor bolts (6), which are located around the body (1) of the seismic isolation bearing.

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