Multi-stage yield energy dissipation damper

Abstract

This invention relates to a multi-stage yield energy dissipation damper, belonging to the technical field of building vibration reduction and energy dissipation devices. It includes: a first plate, a second plate, a primary deformation cylinder, and a secondary deformation cylinder. The first and second plates are arranged opposite each other at intervals. The first plate has a first fixing hole, and the second plate has a first through hole. The two outer walls of the primary deformation cylinder are fixed to one end of the first and second plates. The secondary deformation cylinder is gap-fitted outside the primary deformation cylinder, with one side of its wall passing through the first fixing hole, and the other side of its wall passing through the first through hole. This invention first uses the primary deformation cylinder fixed to the first and second plates, and then uses the secondary deformation cylinder gap-fitted outside the primary deformation cylinder and passing through the first fixing hole. Depending on the earthquake magnitude, it can first utilize the plastic deformation of the primary deformation cylinder to dissipate energy, and then utilize the plastic deformation of the secondary deformation cylinder to dissipate energy, achieving staged energy dissipation, enhancing energy dissipation capacity, and protecting the safety of the main structure.

Description

Technical Field

[0001] This invention relates to the field of building vibration damping and energy dissipation devices, and in particular to a multi-stage yield energy dissipation damper. Background Technology

[0002] Natural disasters such as earthquakes and strong winds pose a serious threat to the safety of building and bridge structures. Traditional seismic design methods mainly resist external loads by increasing the strength and stiffness of structural members, but this method often leads to high structural costs and is difficult to effectively control structural damage under earthquakes or strong winds.

[0003] To address the aforementioned technical challenges, performance-based seismic design principles have gained widespread application. These principles emphasize the use of energy-dissipating devices to absorb external energy, thereby protecting the main structure. For example, patent number CN104775537A, entitled "Building Dampers," describes a technical solution where soft steel spring sheets are connected between two spaced-apart, oppositely arranged building components. This effectively dissipates seismic energy during an earthquake, protecting the main structure of the building or bridge.

[0004] However, as building and bridge structures continue to grow larger, the existing building dampers that dissipate energy through elastic deformation cannot meet the high energy consumption requirements of large building structures. At the same time, traditional metal dampers usually only have a single yield point, which makes it difficult to meet the energy consumption requirements of structures under earthquakes or wind vibrations of different intensities.

[0005] Therefore, how to design a damper with stable hysteresis performance, strong energy dissipation capacity, good durability, and adaptability to different external loads with stepped energy dissipation is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] This invention provides a multi-stage yield energy dissipation damper, which solves the technical problems of weak energy dissipation capacity and single yield point of existing dampers.

[0007] The technical solution of this invention to solve the above-mentioned technical problems is as follows: a multi-stage yield energy dissipation damper, installed on two spaced-apart and oppositely arranged building supports, includes: a first plate, a second plate, a first-stage deformation cylinder, and a second-stage deformation cylinder.

[0008] The first plate and the second plate are arranged at an interval between the two building supports, with their ends far apart from each other connected to the two building supports respectively. The first plate has a first fixing hole, and the second plate has a first through hole. The first-stage deformation cylinder is arranged axially parallel to the surfaces of the first plate and the second plate and is located between them. The two outer cylinder walls of the first-stage deformation cylinder are respectively fixed to the ends of the first plate and the second plate that are close to each other. The second-stage deformation cylinder is gap-fitted outside the first-stage deformation cylinder, with one side of its cylinder wall fixed in the first fixing hole and the other side of its cylinder wall gap passing through the first through hole. This allows the first-stage deformation cylinder to plastically deform and dissipate energy first, and then the second-stage deformation cylinder to plastically deform and dissipate energy, when the first plate and the second plate are squeezed close together or stretched far apart.

[0009] The beneficial effects of this invention are: it improves the structure of traditional building dampers. First, the first and second plates, which are arranged at intervals, are fixed to two building supports arranged at intervals. Then, the two outer walls of the first-stage deformation cylinder are fixed to the ends of the first and second plates that are close to each other. Since the gap of the second-stage deformation cylinder is sleeved outside the first-stage deformation cylinder and one side of its cylinder wall is fixed in the first fixing hole, while the gap of its other side cylinder wall passes through the first through hole, it can first use the plastic deformation of the first-stage deformation cylinder to dissipate energy according to different external loads (different levels of earthquake or wind force), and then use the plastic deformation of the second-stage deformation cylinder to dissipate energy, thereby realizing staged energy dissipation, enhancing energy dissipation capacity, and protecting the safety of the main structure.

[0010] Based on the above technical solution, the present invention can be further improved as follows.

[0011] Furthermore, it also includes a three-stage deformation cylinder. The first plate has a second fixing hole, and the second plate has a second through hole. The three-stage deformation cylinder is gap-fitted outside the two-stage deformation cylinder, with one side of its cylinder wall fixed in the second fixing hole and the other side of its cylinder wall gap passing through the second through hole. This allows the first-stage deformation cylinder to plastically deform and dissipate energy first, then the second-stage deformation cylinder to plastically deform and dissipate energy, and finally the three-stage deformation cylinder to plastically deform and dissipate energy when the first plate and the second plate are squeezed close together or stretched far apart.

[0012] The further beneficial effects of adopting the above are as follows: by using the gap of the third-stage deformation cylinder to be sleeved outside the second-stage deformation cylinder, with one side of its cylinder wall fixed in the second fixing hole and the gap of its other side cylinder wall passing through the second perforation hole, it is possible to dissipate energy by first using the plastic deformation of the first-stage deformation cylinder, then using the plastic deformation of the second-stage deformation cylinder, and finally using the plastic deformation of the third-stage deformation cylinder according to the different strengths of the external load, so as to achieve staged energy dissipation, enhance the energy dissipation capacity, and protect the safety of the main structure.

[0013] Furthermore, the gap between the secondary deformed cylinder wall and the first perforated hole wall is 4-5 mm, and the gap between the tertiary deformed cylinder wall and the second perforated hole wall is 9-11 mm.

[0014] Furthermore, the first-stage deformation cylinder, the second-stage deformation cylinder, and the third-stage deformation cylinder are all made of low-yield-point steel or shape memory alloy.

[0015] The further beneficial effect of adopting the above-mentioned method is that by using low-yield-point steel or shape memory alloys for the first-stage, second-stage, and third-stage deformation cylinders, the energy dissipation capacity and durability of the damper can be improved.

[0016] Furthermore, it also includes two first reinforcing plates and two second reinforcing plates. The two first reinforcing plates are vertically distributed on both sides of the first plate, and their opposite plate surfaces are respectively fixed on both sides of the first plate. The two second reinforcing plates are vertically distributed on both sides of the second plate, and their opposite plate surfaces are respectively fixed on both sides of the second plate. The two ends of the first-stage deformation cylinder, the second-stage deformation cylinder, and the third-stage deformation cylinder are respectively fixed on the two first reinforcing plates and the two second reinforcing plates.

[0017] The further beneficial effect of adopting the above is that: firstly, the two opposing surfaces of the first reinforcing plates are vertically fixed to both sides of the first plate, and then the two opposing surfaces of the second reinforcing plates are vertically fixed to both sides of the second plate, which can enhance the stability of the connection of the damper.

[0018] Furthermore, it also includes two fixing blocks and two plug-in plates. The two fixing blocks are respectively fixed on the surfaces of the two first reinforcing plates that are far apart from each other, and each of their end faces corresponding to the second reinforcing plates is provided with a plug-in groove. The two plug-in plates are respectively fixed on the two second reinforcing plates, and one end of each of the first reinforcing plates is inserted into the two plug-in grooves.

[0019] The further beneficial effect of adopting the above is that by using the plug plate fixed on the second reinforcing plate to be inserted into the plug groove of the fixing block fixed on the first reinforcing plate, the deformation direction of the first plate and the second plate can be guided, thereby improving the compactness of the damper structure.

[0020] Furthermore, it also includes multiple extrusion ribs, which are arranged perpendicularly to the second plate and respectively located between the first-stage deformation cylinder and the second-stage deformation cylinder, between the second-stage deformation cylinder and the third-stage deformation cylinder, and outside the third-stage deformation cylinder. One side of each of the multiple extrusion ribs is fixed to the two surfaces of the second plate, so that when the first plate and the second plate are squeezed closer or stretched further apart, the corresponding first-stage deformation cylinder, the second-stage deformation cylinder, or the third-stage deformation cylinder undergoes plastic deformation to dissipate energy.

[0021] The further beneficial effect of adopting the above is that by fixing one side of multiple extrusion ribs to the two surfaces of the second plate respectively, the first plate and the second plate can assist in extruding the corresponding first-stage deformation cylinder, second-stage deformation cylinder and third-stage deformation cylinder according to different loads.

[0022] Furthermore, the first plate, the second plate, the two first reinforcing plates, the two second reinforcing plates, the two fixing blocks, the two plug-in plates, and the multiple extruded ribs are all made of high-toughness steel.

[0023] The further beneficial effect of adopting the above is that by using high-toughness steel for the first plate, the second plate, the two first reinforcing plates, the two second reinforcing plates, the two fixing blocks, the two plug-in plates and the multiple extrusion ribs, the fatigue resistance of the damper structure can be enhanced. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the first plate, the second plate, the first-stage deformation cylinder, and the second-stage deformation cylinder in a multi-stage yield energy dissipation damper of the present invention;

[0025] Figure 2 This is a three-dimensional structural diagram of a multi-stage yield energy dissipation damper according to the present invention.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 1. First plate; 11. First fixing hole; 2. Second plate; 21. First through hole; 22. Second through hole; 3. First-stage deformation cylinder; 4. Second-stage deformation cylinder; 5. Third-stage deformation cylinder; 6. First reinforcing plate; 7. Second reinforcing plate; 8. Fixing block; 9. Insertion plate; 10. Extrusion rib. Detailed Implementation

[0028] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0029] like Figure 1 As shown, a multi-stage yield energy dissipation damper is installed on two spaced-apart, oppositely arranged building supports, comprising: a first plate 1, a second plate 2, a first-stage deformation cylinder 3, and a second-stage deformation cylinder 4.

[0030] The first plate 1 and the second plate 2 are arranged at intervals between two building supports, with their ends far apart from each other connected to the two building supports respectively. The first plate 1 is provided with a first fixing hole 11, and the second plate 2 is provided with a first through hole 21. The first-stage deformation cylinder 3 is arranged axially parallel to the surfaces of the first plate 1 and the second plate 2 and is located between them. The two outer cylinder walls of the first-stage deformation cylinder 3 are respectively fixed to the close ends of the first plate 1 and the second plate 2. The second-stage deformation cylinder 4 is fitted around the first-stage deformation cylinder 3 with one side of its cylinder wall passing through the first fixing hole 11 and the other side of its cylinder wall passing through the first through hole 21. When the first plate 1 and the second plate 2 are squeezed close together or stretched far apart, the first-stage deformation cylinder 3 first undergoes plastic deformation to dissipate energy, and then the second-stage deformation cylinder 4 undergoes plastic deformation to dissipate energy.

[0031] like Figure 2 As shown, in some specific embodiments, a three-stage deformation cylinder 5 may also be included. The first plate 1 is provided with a second fixing hole, and the second plate 2 is provided with a second through hole 22. The three-stage deformation cylinder 5 is fitted outside the second-stage deformation cylinder 4 with gaps, and one side of its cylinder wall is fixed in the second fixing hole. The other side of its cylinder wall gaps through the second through hole 22. When the first plate 1 and the second plate 2 are squeezed close together or stretched far apart, the first-stage deformation cylinder 3 first undergoes plastic deformation to consume energy, then the second-stage deformation cylinder 4 undergoes plastic deformation to consume energy, and finally the three-stage deformation cylinder 5 undergoes plastic deformation to consume energy.

[0032] like Figure 1 As shown, in some specific embodiments, the gap between the wall of the secondary deformation cylinder 4 and the wall of the first perforation 21 is 4-5 mm, and the gap between the wall of the tertiary deformation cylinder 5 and the wall of the second perforation 22 is 9-11 mm.

[0033] In some specific embodiments, the primary deformation cylinder 3, the secondary deformation cylinder 4, and the tertiary deformation cylinder 5 are all made of low yield point steel or shape memory alloy.

[0034] like Figure 2 As shown, in some specific embodiments, it may also include two first reinforcing plates 6 and two second reinforcing plates 7. The two first reinforcing plates 6 are vertically distributed on both sides of the first plate 1 and their opposite surfaces are fixed to both sides of the first plate 1, respectively. The two second reinforcing plates 7 are vertically distributed on both sides of the second plate 2 and their opposite surfaces are fixed to both sides of the second plate 2, respectively. The two ends of the first-stage deformation cylinder 3, the second-stage deformation cylinder 4 and the third-stage deformation cylinder 5 are respectively fixed on the two first reinforcing plates 6 and the two second reinforcing plates 7.

[0035] like Figure 2As shown, in some specific embodiments, it may also include two fixing blocks 8 and two plug-in plates 9. The two fixing blocks 8 are respectively fixed on the plate surfaces of the two first reinforcing plates 6 that are far apart from each other, and each of them has a plug-in groove on the end face of the corresponding second reinforcing plate 7. The two plug-in plates 9 are respectively fixed on the two second reinforcing plates 7, and one end of the corresponding first reinforcing plate 6 is respectively inserted into the two plug-in grooves.

[0036] like Figure 2 As shown, in some specific embodiments, it may also include multiple extrusion ribs 10. The multiple extrusion ribs 10 are arranged perpendicularly to the second plate 2 and are respectively located between the first-stage deformation cylinder 3 and the second-stage deformation cylinder 4, between the second-stage deformation cylinder 4 and the third-stage deformation cylinder 5, and outside the third-stage deformation cylinder 5. One side of the multiple extrusion ribs 10 is respectively fixed to the two plates of the second plate 2 so that when the first plate 1 and the second plate 2 are squeezed close together or stretched away, the corresponding first-stage deformation cylinder 3, second-stage deformation cylinder 4 or third-stage deformation cylinder 5 is plastically deformed to consume energy.

[0037] In some specific embodiments, the first plate 1, the second plate 2, the two first reinforcing plates 6, the two second reinforcing plates 7, the two fixing blocks 8, the two plug-in plates 9, and the multiple extruded ribs 10 can all be made of high-toughness steel.

[0038] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-stage yield energy dissipation damper, installed on two spaced-apart, oppositely arranged building supports, characterized in that, include: The first plate (1) and the second plate (2) are arranged at intervals between the two building supports and their ends that are far apart from each other are respectively connected to the two building supports. The first plate (1) is provided with a first fixing hole (11) and the second plate (2) is provided with a first through hole (21). A first-stage deformable cylinder (3) is arranged axially parallel to the first plate (1) and the second plate (2) and located between them. The two outer cylinder walls of the first-stage deformable cylinder (3) are respectively fixed to the ends of the first plate (1) and the second plate (2) that are close to each other. The secondary deformation cylinder (4) is fitted outside the primary deformation cylinder (3) with one side of its cylinder wall fixed inside the first fixing hole (11), and the other side of its cylinder wall passes through the first through hole (21). When the first plate (1) and the second plate (2) are squeezed close together or stretched far apart, the primary deformation cylinder (3) first undergoes plastic deformation to consume energy, and then the secondary deformation cylinder (4) undergoes plastic deformation to consume energy.

2. The multi-stage yield energy dissipation damper according to claim 1, characterized in that, It also includes a three-stage deformation cylinder (5). The first plate (1) is provided with a second fixing hole, and the second plate (2) is provided with a second through hole (22). The three-stage deformation cylinder (5) is fitted outside the second-stage deformation cylinder (4) with one side of its cylinder wall fixed in the second fixing hole, and the other side of its cylinder wall passes through the second through hole (22). When the first plate (1) and the second plate (2) are squeezed close together or stretched far apart, the first-stage deformation cylinder (3) first undergoes plastic deformation to consume energy, then the second-stage deformation cylinder (4) undergoes plastic deformation to consume energy, and finally the three-stage deformation cylinder (5) undergoes plastic deformation to consume energy.

3. A multi-stage yield energy dissipation damper according to claim 2, characterized in that, The gap between the wall of the secondary deformable cylinder (4) and the wall of the first perforation (21) is 4-5 mm, and the gap between the wall of the tertiary deformable cylinder (5) and the wall of the second perforation (22) is 9-11 mm.

4. A multi-stage yield energy dissipation damper according to claim 2, characterized in that, The first-stage deformation cylinder (3), the second-stage deformation cylinder (4), and the third-stage deformation cylinder (5) are all made of low-yield-point steel or shape memory alloy.

5. A multi-stage yield energy dissipation damper according to claim 2, characterized in that, It also includes two first reinforcing plates (6) and two second reinforcing plates (7). The two first reinforcing plates (6) are vertically distributed on both sides of the first plate (1) and their opposite surfaces are fixed to both sides of the first plate (1); the two second reinforcing plates (7) are vertically distributed on both sides of the second plate (2) and their opposite surfaces are fixed to both sides of the second plate (2); the two ends of the first-stage deformation cylinder (3), the second-stage deformation cylinder (4) and the third-stage deformation cylinder (5) are fixed to the two first reinforcing plates (6) and the two second reinforcing plates (7) respectively.

6. A multi-stage yield energy dissipation damper according to claim 5, characterized in that, It also includes two fixing blocks (8) and two plug-in plates (9). The two fixing blocks (8) are respectively fixed on the two first reinforcing plates (6) on opposite sides of each other, and each of them has a plug-in groove on its end face corresponding to the second reinforcing plate (7). The two plug-in plates (9) are respectively fixed on the two second reinforcing plates (7), and each of them has one end corresponding to the first reinforcing plate (6) inserted into the two plug-in grooves.

7. A multi-stage yield energy dissipation damper according to claim 6, characterized in that, It also includes multiple extrusion ribs (10), which are arranged perpendicularly to the second plate (2) and located between the first-stage deformation cylinder (3) and the second-stage deformation cylinder (4), between the second-stage deformation cylinder (4) and the third-stage deformation cylinder (5), and outside the third-stage deformation cylinder (5). One side of each of the multiple extrusion ribs (10) is fixed to the two surfaces of the second plate (2) so that when the first plate (1) and the second plate (2) are squeezed close together or stretched far apart, the corresponding first-stage deformation cylinder (3), the second-stage deformation cylinder (4) or the third-stage deformation cylinder (5) is plastically deformed to consume energy.

8. A multi-stage yield energy dissipation damper according to claim 7, characterized in that, The first plate (1), the second plate (2), the two first reinforcing plates (6), the two second reinforcing plates (7), the two fixing blocks (8), the two plug-in plates (9), and the multiple extruded ribs (10) are all made of high-toughness steel.

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