Multi-stage energy consumption combined damping seismic mitigation and isolation support

Abstract

The utility model provides a multi-stage energy consumption combined damping seismic mitigation and isolation support which comprises an upper seat plate and a lower seat plate, the lower seat plate is located above the upper seat plate, a plane sliding plate is arranged at the top of the lower seat plate, a middle plate is arranged at the top of the plane sliding plate, a curved surface groove is formed in the top of the middle plate, and the curved surface groove is located in the middle plate. And an annular groove is formed in the bottom of the upper seat plate. The upper seat plate, the double-curved-surface plate, the middle plate and the two spherical sliding plates form a double-curved-surface structure, and the multiple wave-shaped damping elements form a wave-shaped steel damping structure. When an earthquake occurs, the device can automatically adjust the working state according to different earthquake magnitudes. In a small earthquake, a primary energy consumption mechanism of the double-curved-surface structure is utilized; when a large earthquake occurs, the lower shear pin is cut off, the wave-shaped steel damping structure is activated, and the wave-shaped steel damping structure and the hyperboloid structure work cooperatively, so that larger damping force output is achieved, displacement caused by the earthquake is effectively controlled, the earthquake response of structures such as bridges and buildings is remarkably reduced, and the safety of a main body structure is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of supports, in particular to a multi-stage energy-consuming combined damping and seismic isolation support. Background Art

[0002] In the field of earthquake engineering, the safety and stability of structures such as bridges and buildings have always been a focus for engineers. Traditional seismic design often focuses on improving the strength and stiffness of structures. However, under high-intensity earthquakes, this design approach often fails to effectively control structural displacement, potentially leading to structural damage or even collapse. To more effectively cope with earthquakes, seismic isolation bearings have emerged as a key seismic technology.

[0003] Currently, seismic isolation bearings available on the market utilize frictional sliding pairs to generate damping forces during earthquakes, initially dissipating seismic energy and reducing the impact of the earthquake on the structure. However, part of the damping force of the bearing structure relies on friction, and the magnitude of this friction is significantly affected by the vertical force acting on the bearing. In actual high-intensity earthquakes, the vertical seismic action causes the vertical force of the bearing to vary in real time, which in turn causes the friction of the bearing structure to become unstable, which, to a certain extent, limits its ability to control seismic displacement. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a multi-stage energy dissipation combined damping and seismic isolation bearing.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a multi-stage energy-absorbing combined damping and seismic isolation bearing, comprising an upper seat plate and a lower seat plate, the lower seat plate is located above the upper seat plate, the top of the lower seat plate is equipped with a flat slide, the top of the flat slide plate is equipped with an intermediate plate, the top of the intermediate plate is provided with a curved groove, the bottom of the upper seat plate is provided with an annular groove, the annular groove of the upper seat plate and the curved groove of the intermediate plate are both equipped with spherical slides, a hyperbolic plate is installed between the two spherical slides, the upper and lower curved surfaces of the hyperbolic plate are in contact with the two spherical slides respectively, and the upper seat plate A limiting plate is provided at the bottom of the upper seat plate, the middle plate passes through the limiting plate, the limiting plate is fixedly connected to the bottom of the upper seat plate through a plurality of upper shear pins, the outer surface of the middle plate is fixedly connected to a plurality of connecting ear plates, the upper and lower surfaces of the wave-shaped damping element are in contact with the connecting ear plate and the lower seat plate respectively, the connecting ear plate and the wave-shaped damping element are fixed by high-strength bolts, and a plurality of wave-shaped damping elements are provided on the top of the lower seat plate, and the plurality of wave-shaped damping elements are distributed in a ring array, and the contacting ends of two adjacent wave-shaped damping elements are fixed by high-strength bolts, and the bottoms of the plurality of lower seat plates are installed with anchors.

[0006] Preferably, the middle plate and the lower seat plate are fixedly connected via a lower shear pin.

[0007] Preferably, the upper seat plate forms a friction sliding pair with the hyperbolic plate through a spherical slide, the middle plate forms a friction sliding pair with the hyperbolic plate through a spherical slide, and the lower seat plate forms a friction sliding pair with the middle plate through a flat slide.

[0008] Preferably, the plurality of connecting ear plates are distributed in a circular array.

[0009] The utility model has the following beneficial effects:

[0010] 1) The upper base plate, hyperbolic plate, intermediate plate, and two spherical slides form a hyperbolic structure, while multiple wave-shaped damping elements form a corrugated steel damping structure. During an earthquake, the device automatically adjusts its operating state according to the magnitude of the earthquake. During minor earthquakes, the hyperbolic structure's initial energy dissipation mechanism is utilized. During major earthquakes, the corrugated steel damping structure is activated by shearing the lower shear pins. This synergistic effect with the hyperbolic structure achieves greater damping force output, effectively controlling earthquake-induced displacement and significantly reducing the seismic response of structures such as bridges and buildings, thereby protecting the main structure.

[0011] 2) Because the hyperbolic structure's damping force relies partially on friction, which is closely related to the vertical force on the supports, in actual high-intensity earthquakes, the vertical force on the supports changes in real time due to the vertical movement, resulting in unstable friction in the hyperbolic structure, which is detrimental to controlling seismic displacement. Therefore, the added lower corrugated steel damping structure, unaffected by vertical forces, provides stable damping output, thus avoiding the adverse effects of friction damping instability on the structure.

[0012] 3) The support is equipped with three friction sliding pairs, each of which can share the seismic displacement. It can adapt to larger seismic displacements while using a smaller structural size. It is particularly suitable for use in structures with small installation spaces such as T-beams in high-intensity earthquake zones. Compared with similar seismic isolation products, due to its smaller structural size, it has better economy and wider adaptability to installation environments.

[0013] 4) An annular concave platform is set on the lower surface of the upper base plate, which is used in combination with the steel damping element to prevent the beam from falling, avoiding the risk of beam falling when the structural earthquake displacement is large. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional cross-sectional schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic cross-sectional view of the overall structure of the utility model.

[0016] Among them, 1. Upper seat plate; 2. Hyperbolic panel; 3. Middle plate; 4. Lower seat plate; 5. Spherical slide plate; 6. Flat slide plate; 7. Limit plate; 8. Upper shear pin; 9. Connecting ear plate; 10. Wave-shaped damping element; 11. High-strength bolt; 12. Lower shear pin; 13. Anchor. DETAILED DESCRIPTION

[0017] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention. Example

[0018] like Figure 1-2 As shown, the embodiment of the utility model provides a multi-stage energy dissipation combined damping and seismic isolation bearing, including an upper seat plate 1 and a lower seat plate 4, the lower seat plate 4 is located above the upper seat plate 1, the top of the lower seat plate 4 is equipped with a flat slide 6, the top of the flat slide 6 is equipped with an intermediate plate 3, the top of the intermediate plate 3 is provided with a curved groove, the bottom of the upper seat plate 1 is provided with an annular groove, the annular groove of the upper seat plate 1 and the curved groove of the intermediate plate 3 are both equipped with spherical slides 5, a hyperbolic plate 2 is installed between the two spherical slides 5, the upper and lower curved surfaces of the hyperbolic plate 2 are respectively in contact with the two spherical slides 5, and a limiting plate 7 is provided at the bottom of the upper seat plate 1. The middle plate 3 passes through the limit plate 7, and the limit plate 7 is fixedly connected to the bottom of the upper seat plate 1 through multiple upper shear pins 8. The outer surface of the middle plate 3 is fixedly connected with multiple connecting ear plates 9. The upper and lower surfaces of the wave-shaped damping element 10 are in contact with the connecting ear plate 9 and the lower seat plate 4 respectively. The connecting ear plate 9 and the wave-shaped damping element 10 are fixed by high-strength bolts 11. A plurality of wave-shaped damping elements 10 are arranged on the top of the lower seat plate 4. The plurality of wave-shaped damping elements 10 are distributed in a circular array. The contacting ends of two adjacent wave-shaped damping elements 10 are fixed by high-strength bolts 11. Anchors 13 are installed on the bottom of the plurality of lower seat plates 4.

[0019] The middle plate 3 and lower seat plate 4 are fixedly connected by lower shear pins 12. This design not only ensures the stability of the structure during normal operation but also provides the necessary conditions for triggering the lower damping mechanism during large earthquakes. When the earthquake exceeds the initial energy dissipation capacity of the hyperbolic structure, the shear pins 12 shear off, activating the wave-shaped damping element 10 to provide greater damping force.

[0020] The bearing is designed with three layers of friction and sliding pairs to effectively disperse and absorb seismic energy. The upper plate 1 and middle plate 3 each form a friction and sliding pair with the hyperbolic plate 2 via a spherical slide 5. This design utilizes the geometric properties of the hyperbolic surface to generate friction damping during sliding, initially dissipating seismic energy. The lower plate 4, in turn, forms another friction and sliding pair with the middle plate 3 via a flat slide 6, further enhancing the bearing's energy dissipation capacity.

[0021] Multiple connecting lugs 9 are arranged in a circular array at key locations on the support. This layout not only enhances the support's structural strength but also ensures the stable and efficient operation of the wave-shaped damping element 10 during earthquakes. When the support enters its high-energy dissipation mode, the wave-shaped damping element 10 comes into play, working in conjunction with the hyperbolic structure to provide greater damping force, effectively controlling earthquake-induced displacement.

[0022] Working principle: When using a multi-stage energy-absorbing combined damping and seismic isolation bearing, when there is no earthquake action or the earthquake action is small, the bearing is in normal working condition. At this time, neither the hyperbolic structure nor the wave-shaped damping element 10 has entered the energy-absorbing stage, and the bearing maintains the stability of the structure through its fixed connection and friction sliding pair. When an earthquake occurs, the upper shear pin 8 connecting the limit plate 7 and the upper seat plate 1 is first sheared off under the action of the earthquake. At this time, the friction sliding pair between the upper seat plate 1, the middle plate 3 and the hyperbolic panel 2 starts to work, reducing the impact of the earthquake on the structure through friction damping. The upper seat plate 1 and the middle plate 3 respectively form friction sliding pairs with the hyperbolic panel 2 through the spherical slide 5. This design utilizes the geometric characteristics of the hyperbolic surface to generate friction damping during the sliding process, which initially consumes earthquake energy. As the earthquake action intensifies, when the shear force on the lower shear pin 12 exceeds its design strength, the shear pin will be sheared off. This process is triggered automatically and does not require manual intervention. After the lower shear pin 12 is sheared, the wavy damping element 10 is activated. The lower seat plate 4, through the flat slide plate 6, forms another frictional sliding pair with the intermediate plate 3, further enhancing the bearing's energy dissipation capacity. Through the high-strength bolts 11 secured to the connecting lugs 9, the wavy damping element 10 begins to work in conjunction with the hyperbolic structure. At this point, the bearing enters a multi-stage energy dissipation phase, leveraging the combined action of the hyperbolic structure and the wavy damping element 10 to more effectively control earthquake-induced displacement.

[0023] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-stage energy dissipation combined damping and seismic isolation bearing, comprising an upper seat plate (1) and a lower seat plate (4), characterized in that: The lower seat plate (4) is located above the upper seat plate (1), the top of the lower seat plate (4) is equipped with a flat slide plate (6), the top of the flat slide plate (6) is equipped with an intermediate plate (3), the top of the intermediate plate (3) is provided with a curved groove, the bottom of the upper seat plate (1) is provided with an annular groove, the annular groove of the upper seat plate (1) and the curved groove of the intermediate plate (3) are both equipped with spherical slide plates (5), a hyperbolic plate (2) is installed between the two spherical slide plates (5), the upper and lower curved surfaces of the hyperbolic plate (2) are in contact with the two spherical slide plates (5) respectively, a limiting plate (7) is provided at the bottom of the upper seat plate (1), the intermediate plate (3) passes through the limiting plate (7), the limiting plate ( 7) It is fixedly connected to the bottom of the upper seat plate (1) through multiple upper shear pins (8), the outer surface of the intermediate plate (3) is fixedly connected with multiple connecting ear plates (9), the upper and lower surfaces of the wave-shaped damping element (10) are in contact with the connecting ear plates (9) and the lower seat plate (4) respectively, the connecting ear plates (9) and the wave-shaped damping element (10) are fixed by high-strength bolts (11), and the top of the lower seat plate (4) is provided with multiple wave-shaped damping elements (10), the multiple wave-shaped damping elements (10) are distributed in a ring array, and the contacting ends of two adjacent wave-shaped damping elements (10) are fixed by high-strength bolts (11), and the bottoms of the multiple lower seat plates (4) are installed with anchors (13).

2. The multi-stage energy dissipation combined damping and seismic isolation bearing according to claim 1, characterized in that: The middle plate (3) and the lower seat plate (4) are fixedly connected via a lower shear pin (12).

3. The multi-stage energy dissipation combined damping and seismic isolation bearing according to claim 1 is characterized in that: The upper seat plate (1) forms a friction sliding pair with the hyperbolic plate (2) through the spherical slide (5), the middle plate (3) forms a friction sliding pair with the hyperbolic plate (2) through the spherical slide (5), and the lower seat plate (4) forms a friction sliding pair with the middle plate (3) through the plane slide (6).

4. The multi-stage energy dissipation combined damping and seismic isolation bearing according to claim 1 is characterized in that: The plurality of connecting ear plates (9) are distributed in a ring array.

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