Shock insulation support

Abstract

The utility model provides a shock insulation support which comprises a support body, an upper connecting plate located on the upper end face of the support body and a lower connecting plate located on the lower end face of the support body. The shock insulation support further comprises steel U-shaped pieces evenly distributed on the periphery of the support body, the steel U-shaped pieces are provided with the opening ends located on the head portions and the closed ends located on the tail portions, the two sides of the opening ends are connected with the upper connecting plate and the lower connecting plate respectively, and therefore the horizontal rigidity of the shock insulation support can be enhanced through the elastic stages of the steel U-shaped pieces; the energy consumption can be improved through plastic deformation of the steel U-shaped piece, and the energy consumption capacity is high; by using the steel U-shaped piece, the use amount of the pencil lead can be greatly reduced, even the pencil lead is not used, the cost is lower, and the environment-friendly requirement is met; due to the existence of the steel U-shaped piece, the shock insulation support not only can effectively counteract impact load of an earthquake and dissipate earthquake energy, but also can effectively counteract disturbance of wind load and slight vibration to the shock insulation support, and is good in performance stability.

Description

Technical Field

[0001] This utility model belongs to the field of seismic isolation technology, and specifically relates to a seismic isolation bearing. Background Technology

[0002] In recent years, with the promotion of seismic isolation technology, seismic isolation bearings have been widely used in various low- and medium-rise buildings. Traditional seismic isolation bearings are mostly made of natural rubber, but these bearings have low horizontal stiffness and will respond to slight vibrations such as wind vibrations. This is not conducive to improving the comfort and safety of the building structure, and will also accelerate the fatigue damage process of natural rubber bearings. Furthermore, they are difficult to effectively resist the instantaneous impact load during earthquakes and are difficult to dissipate seismic energy.

[0003] To address this issue, seismic isolation bearings have emerged on the market that incorporate lead cores into natural rubber bearings to enhance horizontal stiffness and energy dissipation capacity. However, lead is a toxic heavy metal that poses significant risks to human health and the environment, and therefore does not meet environmental protection requirements. Utility Model Content

[0004] The purpose of this invention is to overcome one or more shortcomings in the prior art and provide a seismic isolation bearing with good horizontal stiffness, strong energy dissipation capacity and environmental protection requirements.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is a seismic isolation bearing, comprising:

[0006] Support body;

[0007] An upper connecting plate, which is located on the upper end face of the support body;

[0008] The lower connecting plate is located on the lower end face of the support body;

[0009] The seismic isolation bearing also includes steel U-shaped members evenly distributed around the bearing body. The steel U-shaped members have an open end at the head and a closed end at the tail. The two sides of the open end are respectively connected to the upper connecting plate and the lower connecting plate, so that the seismic isolation bearing can enhance the horizontal stiffness through the elastic stage of the steel U-shaped members and dissipate energy through the plastic deformation of the steel U-shaped members.

[0010] Preferably, the open end faces the support body.

[0011] More preferably, a limiting block is connected to the steel U-shaped part, and a limiting groove is provided on the lower connecting plate perpendicular to the orientation of the opening end, and the limiting block is slidably embedded in the limiting groove.

[0012] More preferably, the cross-section of the limiting block is an inverted T-shape with a smaller top and a larger bottom, and the cross-sectional shape of the limiting groove matches the cross-sectional shape of the limiting block.

[0013] More preferably, two adjacent steel U-shaped pieces are connected to the same part of the upper connecting plate, and the parts of these two steel U-shaped pieces connected to the upper connecting plate are integrated.

[0014] Preferably, in two adjacent steel U-shaped members, the open end of one is positioned close to the closed section of the other.

[0015] More preferably, the steel U-shaped component is located outside the upper connecting plate and the lower connecting plate, and the two sides of the open end are connected to the extension plates extending in the horizontal direction. The extension plates extend between the upper connecting plate and the lower connecting plate and are connected to the upper connecting plate or the lower connecting plate.

[0016] Preferably, the upper connecting plate and the lower connecting plate are both rectangular plates and are arranged correspondingly. The four sides of the upper connecting plate extend beyond the upper end face of the support body, and the four sides of the lower connecting plate extend beyond the lower end face of the support body.

[0017] More preferably, the steel U-shaped component spans both sides of the upper connecting plate and the lower connecting plate. The steel U-shaped component also includes a limiter connected to both sides of the opening end. The limiter is connected to the upper connecting plate or the lower connecting plate. The limiter has a snap-fit ​​groove, and the corner of the upper connecting plate or the lower connecting plate is embedded in the snap-fit ​​groove.

[0018] More preferably, the steel U-shaped part is made of steel plate or round steel bent into shape.

[0019] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0020] The seismic isolation bearing provided by this utility model includes: a bearing body, an upper connecting plate located on the upper end face of the bearing body, and a lower connecting plate located on the lower end face of the bearing body; by further including steel U-shaped members evenly distributed around the bearing body, the steel U-shaped members have an open end at the head and a closed end at the tail, with the two sides of the open end connected to the upper connecting plate and the lower connecting plate respectively, the seismic isolation bearing can enhance horizontal stiffness through the elastic stage of the steel U-shaped members and improve energy dissipation through the plastic deformation of the steel U-shaped members, and has a strong energy dissipation capacity; by using steel U-shaped members, the amount of lead core used can be greatly reduced, or even eliminated, resulting in lower cost and compliance with environmental protection requirements; due to the presence of steel U-shaped members, the seismic isolation bearing can not only effectively offset the impact load of earthquakes and dissipate seismic energy, but also effectively offset the disturbance of wind loads and minor vibrations to the seismic isolation bearing, and has good performance stability. Attached Figure Description

[0021] Figure 1 , Figure 2 This is a three-dimensional schematic diagram of Embodiment 1 of this utility model, for ease of observation. Figure 1 and Figure 2 The view angles are different.

[0022] Figure 3 yes Figure 1 This is a top view of Embodiment 1 of the present invention.

[0023] Figure 4 yes Figure 3 Cross-sectional view along the AA direction.

[0024] Figure 5 This is a three-dimensional schematic diagram of Embodiment 2 of this utility model.

[0025] Figure 6 yes Figure 5 A three-dimensional schematic diagram of the U-shaped component made of steel.

[0026] Figure 7 This is a three-dimensional schematic diagram of Embodiment 3 of this utility model.

[0027] Figure 8 yes Figure 7 A three-dimensional schematic diagram of the U-shaped component made of steel.

[0028] Figure 9 , Figure 10 This is a three-dimensional schematic diagram of Embodiment 4 of this utility model, for ease of observation. Figure 9 and Figure 10 The view angles are different.

[0029] Figure 11 This is a top view of Embodiment 4 of this utility model.

[0030] Figure 12 yes Figure 9 A three-dimensional schematic diagram of the U-shaped component made of steel.

[0031] Among them: 10. Support body; 20. Upper connecting plate; 30. Lower connecting plate; 31. Limiting groove; 40. Steel U-shaped part; 41. Open end; 42. Closed end; 43. Limiting block; 44. Extension plate; 45. Limiter; 46. Snap-fit ​​groove. Detailed Implementation

[0032] The present invention will now be further described with reference to the accompanying drawings.

[0033] Example 1, as Figures 1 to 4 As shown, the seismic isolation bearing provided by this utility model includes: a bearing body 10, an upper connecting plate 20, a lower connecting plate 30, and a steel U-shaped component 40. The bearing body 10 is cylindrical and vertically arranged. The upper connecting plate 20 is a rectangular plate fixed to the upper surface of the bearing body 10, with its four sides extending beyond the upper surface of the bearing body 10. The lower connecting plate 30 is a rectangular plate larger than the upper connecting plate 20, and is correspondingly arranged to the upper connecting plate 20. This corresponding arrangement refers to the lower... The centers of the connecting plate 30 and the upper connecting plate 20 are located on the same straight line perpendicular to the lower connecting plate 30 and the upper connecting plate 20, and the four sides of the lower connecting plate 30 are parallel to the four sides of the upper connecting plate 20. The lower connecting plate 30 is fixed to the lower end face of the support body 10, and the four sides of the lower connecting plate 30 extend beyond the lower end face of the support body 10. The steel U-shaped parts 40 are bent from steel plates. There are eight steel U-shaped parts 40, and these eight steel U-shaped parts 40 are evenly distributed around the perimeter of the support body 10, that is, the upper connecting plate... Two steel U-shaped members 40 are correspondingly provided on each side of the upper connecting plate 20 and the lower connecting plate 30. These two steel U-shaped members 40 are arranged in parallel and spaced apart. Specifically, the steel U-shaped member 40 has an open end 41 at the head and a closed end 42 at the tail. The open end 41 faces the support body 10. The upper and lower sides of the open end 41 extend between the upper connecting plate 20 and the lower connecting plate 30. The upper side of the open end 41 is fixedly connected to the upper connecting plate 20, and the lower side of the open end 41 is unidirectionally slidably connected to the lower connecting plate 30, so that the seismic isolation support... The bearing can enhance horizontal stiffness through the elastic force of the steel U-shaped component 40, and also improve energy dissipation through the deformation of the steel U-shaped component 40. It has large horizontal displacement and strong energy dissipation capacity. The bearing body 10 does not need to add lead core or only needs to add a small amount of lead core, which reduces costs and meets environmental protection requirements. Due to the presence of the steel U-shaped component 40, the seismic isolation bearing has better fatigue performance, can adapt to large displacement, and can effectively offset the impact load of earthquakes. It can also effectively offset the disturbance of wind load and slight vibration to the seismic isolation bearing, and its performance is stable.

[0034] In this embodiment, a limiting block 43 is also connected to the steel U-shaped part 40. A limiting groove 31 perpendicular to the orientation of the opening end 41 is provided on the lower connecting plate 30. The limiting block 43 is fixedly connected to the lower side of the opening end 41 by bolt connection or welding. The limiting block 43 is slidably embedded in the limiting groove 31. Furthermore, the cross-section of the limiting block 43 is an inverted T-shape with a smaller top and a larger bottom. The cross-sectional shape of the limiting groove 31 matches the cross-sectional shape of the limiting block 43.

[0035] Because the limiting block 43 has a T-shaped structure, it will not fall out of the limiting groove 31 during the movement of the steel U-shaped component 40. When small vibrations or wind-induced vibrations occur, the steel U-shaped component 40 provides a certain horizontal stiffness to the seismic isolation bearing, preventing it from undergoing large deformations under these conditions and ensuring the comfort of the superstructure. At this time, the steel U-shaped component 40 is in the elastic stage. When an earthquake occurs, the seismic isolation bearing undergoes shear deformation, that is, the upper connecting plate moves relative to the lower connecting plate. When displacement occurs in the X direction, the steel U-shaped member 40 in the X direction undergoes plastic deformation to dissipate seismic energy. At this time, the limiting block 43 of the steel U-shaped member 40 in the Y direction slides within the limiting groove 31 and does not function. As the displacement continues to increase, the steel U-shaped member 40 in the X direction is straightened and provides a limit for the seismic isolation bearing, preventing its failure. Correspondingly, when displacement occurs in the Y direction, the steel U-shaped member 40 in the Y direction undergoes plastic deformation to dissipate seismic energy. At this time, the limiting block 43 of the steel U-shaped member 40 in the X direction slides within the limiting groove 31 and does not function. The sliding within 31 has no effect. When the displacement continues to increase, the steel U-shaped part 40 in the Y direction is straightened to provide a limit for the seismic isolation bearing and prevent it from being damaged. When deformation occurs in other directions, all steel U-shaped parts 40 will undergo corresponding deformation. However, since all the limiting grooves 31 are designed with cross coordinates, the steel U-shaped parts 40 will only deform within the opening plane, ensuring that the steel U-shaped parts 40 are not damaged to the greatest extent. Furthermore, in all deformations, the steel U-shaped parts 40 will not affect the function of the bearing body 10.

[0036] The working principle of this seismic isolation bearing is clear and straightforward, and its structure is simple. By setting the limiting groove 31, it can effectively prevent the steel U-shaped part 40 from twisting during displacement, which greatly protects the safety of the steel U-shaped part 40 and the building structure.

[0037] Example 2, as Figure 5 and Figure 6As shown, Embodiment 2 is basically the same as Embodiment 1, except that the seismic isolation bearing in Embodiment 2 is an elastic sliding plate bearing, the bearing body 10 is a rubber seismic isolation body, the upper connecting plate 20 and the bearing body 10 are fixedly connected, the size of the lower connecting plate 30 is much larger than the size of the lower end face of the bearing body 10, and the bearing body 10 can slide freely on the lower connecting plate 30. At the same time, any two adjacent steel U-shaped pieces 40 are connected to the same part of the upper connecting plate 20, and the parts of these two steel U-shaped pieces 40 connected to the upper connecting plate 20 are integrated.

[0038] Example 3, as Figure 7 and Figure 8 As shown, Embodiment 3 is basically the same as Embodiment 1, except that the upper connecting plate 20 and the lower connecting plate 30 in Embodiment 3 are the same size, and there are four steel U-shaped parts 40. Each side of the upper connecting plate 20 and the lower connecting plate 30 is provided with a corresponding steel U-shaped part 40. In two adjacent steel U-shaped parts 40, the open end 41 of one of them is close to the closed section 42 of the other, so that all steel U-shaped parts 40 are in a state of being connected end to end. At the same time, the steel U-shaped parts 40 are located on the outside of the upper connecting plate 20 and the lower connecting plate 30. The upper and lower sides of the open end 41 are connected with extension plates 44 extending in the horizontal direction. The extension plates 44 extend between the upper connecting plate 20 and the lower connecting plate 30. The extension plate 44 located on the upper side of the open end 41 is fixedly connected to the upper connecting plate 20 by bolts, and the extension plate 44 located on the lower side of the open end 41 is fixedly connected to the lower connecting plate 30 by bolts.

[0039] During minor vibrations or wind-induced shaking, the steel U-shaped member 40 provides a certain horizontal stiffness to the seismic isolation bearing, preventing it from undergoing large deformations under these conditions and ensuring the comfort of the superstructure. At this time, the steel U-shaped member 40 is in the elastic stage. When an earthquake occurs, the seismic isolation bearing undergoes shear deformation, i.e., the upper connecting plate moves relative to the lower connecting plate, thereby causing the steel U-shaped member 40 to undergo plastic deformation to dissipate seismic energy. Specifically, when deformation occurs in the X direction, the parallel steel U-shaped member 40 undergoes horizontal deformation and consumes energy, while the steel U-shaped member 40 in the Y direction undergoes torsional deformation and consumes energy. The same applies when deformation occurs in the Y direction. When deformation occurs in other directions, all steel U-shaped members 40 will undergo corresponding deformation. In all deformations, the steel U-shaped members 40 will not affect the function of the support body 10. Since the steel U-shaped members 40 in the four directions are connected end to end, the deformation of any one steel U-shaped member 40 will not affect the function of the steel U-shaped members 40 in other directions.

[0040] Example 4, as Figures 9 to 12As shown, Embodiment 4 is basically the same as Embodiment 3, except that in Embodiment 4, the steel U-shaped part 40 is made of round steel and each steel U-shaped part 40 spans the two sides of the upper connecting plate 20 and the lower connecting plate 30. The steel U-shaped part 40 also includes a limiter 45 connected to the upper and lower sides of the opening end 41. The limiter 45 has a snap-fit ​​groove 46. The limiter 45 located on the upper side of the opening end 41 is locked to the upper connecting plate 20 by bolts, and the corner of the upper connecting plate 20 is embedded in the snap-fit ​​groove 46 of the limiter 45 locked to it. The limiter 45 located on the lower side of the opening end 41 is locked to the lower connecting plate 30 by bolts, and the corner of the lower connecting plate 30 is embedded in the snap-fit ​​groove 46 of the limiter 45 locked to it.

[0041] Because the steel U-shaped parts 40 are diagonally staggered, they can prevent each other from interfering during displacement, and the horizontal forces in all directions are consistent. The round steel of the bent steel U-shaped parts 40 is threadedly connected to the limiter 45, so the stiffness provided by the steel U-shaped parts 40 of the seismic isolation bearing is the same in any direction.

[0042] It should be noted that in embodiments one to three, the force value of the steel U-shaped part 40 can be adjusted by adjusting the plate thickness and material.

[0043] The seismic isolation bearing provided by this utility model has a flexible and versatile structure with various variations to meet diverse market demands. It can be made available from a variety of materials to meet market needs, is easy to install, and is simple to maintain and replace.

[0044] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A seismic isolation bearing, comprising: Support body; An upper connecting plate, which is located on the upper end face of the support body; The lower connecting plate is located on the lower end face of the support body; Its features are: The seismic isolation bearing also includes steel U-shaped members evenly distributed around the bearing body. The steel U-shaped members have an open end at the head and a closed end at the tail. The two sides of the open end are respectively connected to the upper connecting plate and the lower connecting plate, so that the seismic isolation bearing can enhance the horizontal stiffness through the elastic stage of the steel U-shaped members and dissipate energy through the plastic deformation of the steel U-shaped members.

2. The seismic isolation bearing according to claim 1, characterized in that: The opening faces the support body.

3. The seismic isolation bearing according to claim 2, characterized in that: A limiting block is connected to the steel U-shaped part, and a limiting groove is provided on the lower connecting plate perpendicular to the orientation of the opening end. The limiting block is slidably embedded in the limiting groove.

4. The seismic isolation bearing according to claim 3, characterized in that: The cross-section of the limiting block is an inverted T-shape, smaller at the top and larger at the bottom, and the cross-sectional shape of the limiting groove matches the cross-sectional shape of the limiting block.

5. The seismic isolation bearing according to claim 3, characterized in that: Two adjacent steel U-shaped pieces are connected to the same part of the upper connecting plate, and the parts of these two steel U-shaped pieces connected to the upper connecting plate are integrated.

6. The seismic isolation bearing according to claim 1, characterized in that: In two adjacent steel U-shaped members, the open end of one is positioned close to the closed section of the other.

7. The seismic isolation bearing according to claim 6, characterized in that: The steel U-shaped component is located outside the upper connecting plate and the lower connecting plate. The two sides of the open end are connected to extension plates extending in the horizontal direction. The extension plates extend between the upper connecting plate and the lower connecting plate and are connected to the upper connecting plate or the lower connecting plate.

8. The seismic isolation bearing according to claim 1, characterized in that: Both the upper connecting plate and the lower connecting plate are rectangular plates and are arranged correspondingly. The four sides of the upper connecting plate extend beyond the upper end face of the support body, and the four sides of the lower connecting plate extend beyond the lower end face of the support body.

9. The seismic isolation bearing according to claim 8, characterized in that: The steel U-shaped component spans the two sides of the upper connecting plate and the lower connecting plate. The steel U-shaped component also includes a limiter connected to both sides of the opening end. The limiter is connected to the upper connecting plate or the lower connecting plate. The limiter has a snap-fit ​​groove, and the corner of the upper connecting plate or the lower connecting plate is embedded in the snap-fit ​​groove.

10. The seismic isolation bearing according to any one of claims 1-9, characterized in that: The steel U-shaped part is made of steel plate or round steel bent into shape.

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