Rocking self-centering steel frame based on energy dissipation damper and assembling method thereof

By installing dampers and SMA strands in the steel frame, the problems of excessive deformation and insufficient foundation restraint of the swaying steel frame under seismic loading were solved, achieving self-resetting and rapid recovery, improving seismic performance and simplifying construction.

CN115680118BActive Publication Date: 2026-01-27XIAN UNIV OF TECH
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Patent Information

Application Number
CN202211210828.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-09-30
Publication Date
2026-01-27
Estimated Expiration
2042-09-30

AI Technical Summary

Technical Problem

Excessive swaying deformation of the swaying steel frame under seismic loads and limited constraint of the foundation on the column bases reduce the structure's overturning resistance, increase the risk of overturning, and result in high post-earthquake repair costs.

Method used

Dampers are installed at the connection between steel columns and concrete foundations and steel beams. The dampers dissipate seismic energy by forming plastic deformation during swaying and rotation. Combined with shape memory alloy stranded wires, they provide self-resetting capability. The self-resetting function is enhanced by beam-column damping structures and SMA stranded wires.

Benefits of technology

It improves the seismic performance of the structure under strong earthquakes, reduces damage to beam-column joints, enables the structure to self-reset and recover quickly, simplifies the construction process, and reduces on-site operation requirements.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a rocking self-resetting steel frame based on energy dissipation damper, which comprises a steel beam, a steel column, a column end fixer, a rotating shaft, a beam end fixer, a beam column damper, a beam end stabilizer, an L-shaped SMA fixing plate, a column beam SMA wire, an L-shaped connecting plate, a copper plate, a column bottom SMA wire, a connecting plate, an extrusion plate, a supporting rib plate, a fixing plate, a concrete base, a foot energy dissipation damper and a lower rib plate; the damper is arranged at the connecting position of the steel column and the concrete base and the steel beam, plastic deformation is formed when rocking and rotating occur at the connecting position, seismic energy is dissipated, and thus the seismic damage and destruction of the node are reduced; all the components in the application can be subjected to factory processing and assembly construction, holes are preformed on the structure, and the components can be connected with the column bottom connecting assembly of the concrete base assembly through the preset connecting holes, so that the requirement of on-site operation is reduced and the construction period is shortened.
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Description

Technical Field

[0001] This invention belongs to the field of seismic-resistant building structure technology, specifically relating to a swing self-resetting steel frame based on an energy-dissipating damper, and also to an assembly method for the swing self-resetting steel frame based on an energy-dissipating damper. Background Technology

[0002] Current seismic design for steel frames mostly follows the "strong nodes, weak members" design philosophy. This approach prioritizes preventing the main structure from collapsing during an earthquake to protect lives, neglecting the consequence that the structure may be unable to maintain its original function for a long period after the earthquake. Past earthquake disasters have shown that structural design cannot merely focus on protecting lives during an earthquake; it should place equal importance on the structure's self-repair and restoration of its original functions after an earthquake to ensure the rapid recovery of life and production in disaster areas. Therefore, scholars both domestically and internationally have successively proposed functionally recoverable structures to address the problems of excessive residual deformation and high repair costs in post-earthquake buildings. These structures possess self-resetting capabilities, enabling rapid post-earthquake recovery and significantly reducing economic losses caused by earthquakes. Self-resetting structures with swaying energy dissipation function are a typical structural form that achieves functional recovery. By introducing components that can provide restoring force to the structure, the residual displacement of the building structure after an earthquake is controlled and reduced. The swaying function is achieved by relaxing the nodes, concentrating the damage under the earthquake on the external energy dissipation components, and using post-tensioning bars or steel strands to provide self-resetting capability. The energy dissipation components can effectively reduce or even eliminate the residual deformation of the structure, so that the structure can be restored to its original state after the earthquake with minimal or no repair.

[0003] Shape memory alloys (SMAs) are renowned for their superior self-centering properties, high damping energy dissipation capacity, and unique shape memory effect. These characteristics meet the application requirements of earthquake-resistant structures in civil engineering, effectively reducing residual displacement of structures after earthquakes. Furthermore, due to the outstanding self-centering performance and fatigue resistance of SMAs, even under high earthquake intensity, there is no need to repair or replace SMA components.

[0004] Controlled swaying self-resetting steel frames possess the characteristics of both self-resetting and swaying structures. By relaxing the column base joints, they allow the column bases to rise during earthquakes, utilizing post-tensioning bars or steel strands to provide self-resetting capability, thus giving the structure good seismic performance. However, while swaying steel frames can effectively reduce seismic damage, the large swaying deformation increases the overturning moment, and the foundation's restraint on the column bases is limited, reducing the structure's overturning resistance, increasing the risk of structural overturning, and hindering the realization and application of the structure's seismic performance. Therefore, it is necessary to address the problems of excessive swaying of the swaying columns and the limited restraint of the foundation on the column bases. Summary of the Invention

[0005] The purpose of this invention is to provide a swing self-resetting steel frame based on energy dissipation dampers. By installing dampers at the connection between the steel columns and the concrete base and the steel beams, plastic deformation is formed at the connection when swinging and rotating, dissipating seismic energy and thus reducing seismic damage and failure of the nodes.

[0006] Another object of the present invention is to provide an assembly method for a swing self-resetting steel frame based on an energy-dissipating damper.

[0007] The technical solution adopted in this invention is a swing self-resetting steel frame based on an energy-dissipating damper, comprising multiple concrete base components arranged in a straight line. Each concrete base component is connected to a steel column via a column-foot energy-dissipating damper. Multiple steel beams are vertically connected between adjacent steel columns through a beam-column damping structure.

[0008] The invention is further characterized by:

[0009] Each steel column and beam includes two parallel flanges, with multiple ribs connecting the two flanges.

[0010] Each concrete base assembly includes a concrete base, on which multiple lower ribs are connected. Connecting plates parallel to the upper plane of the concrete base are connected to the multiple lower ribs. A steel column passes through the connecting plates and is connected to the concrete base. Multiple extrusion plates are connected at one end on the concrete base between the two flanges of the steel column. The other end of the extrusion plates passes through the connecting plates. A column base energy-dissipating damper is connected between the end of the extrusion plate passing through the connecting plate and the flange. Each flange of the steel column is connected to the connecting plate by an L-shaped connecting plate.

[0011] Multiple SMA stranded wires are also connected between the bottom ribs of each steel column and the concrete base.

[0012] A copper plate is installed between the steel column and each L-shaped connecting plate.

[0013] The L-shaped connecting plate is welded with a support rib, which is fixedly connected to the two sides of the L-shaped connecting plate.

[0014] The beam-column damping structure includes two parallel column end retainers that are bolted to the steel column. The column end retainers are located between the two flange plates of the steel beam. Each column end retainer has a semi-circular groove. A rotating shaft is connected to the semi-circular groove of the two column end retainers by screws. A fixing plate is connected to each end of the rotating shaft. The beam-column damper and the beam end retainer are bolted to both sides of each fixing plate in sequence. Each beam end retainer is bolted to the flange plate of the adjacent steel beam. The beam end retainer is also bolted to the steel beam.

[0015] Support plates are connected to both ends of the steel beam, and beam end stabilizers are connected to the support plates. The beam end stabilizers are sleeved on the outside of the rotating shaft.

[0016] Each of the two flanges of the steel beam is bolted to one side of an L-shaped SMA fixing plate, and the other side of each L-shaped SMA fixing plate is connected to the steel beam via column-beam SMA stranded wire.

[0017] Another technical solution adopted in this invention is a swing self-resetting steel frame assembly method based on an energy dissipation damper, which is implemented according to the following steps:

[0018] A groove is made in each concrete base assembly, and a steel column is connected to the groove of each concrete base assembly through a column foot energy-dissipating damper.

[0019] Multiple steel beams are connected between two adjacent steel columns, and beam-column damping structures are connected between the steel beams and adjacent steel columns.

[0020] The beneficial effects of this invention are:

[0021] 1) The present invention is based on a swing self-resetting steel frame with energy dissipation damper. Under seismic action, the connection between the steel column and the concrete base and the steel beam dissipates energy by swinging the energy dissipation damper itself through plastic deformation, so that the main components in the node remain basically elastic, improving the seismic performance under strong earthquakes and effectively reducing the damage to the beam-column joint.

[0022] 2) The column base and column beam of the present invention are equipped with energy dissipation devices and SMA stranded wires on both sides to enhance the self-resetting of the weak side of the building structure. The number and position of the energy dissipation dampers can be adjusted to meet the needs under different conditions.

[0023] 3) In this invention, both the beam-column joint and the column base joint are equipped with SMA stranded wires to achieve the self-resetting function.

[0024] 4) In this invention, all energy-consuming devices are fixed to the outside of the structure with bolts. If the energy-consuming device is damaged after an earthquake, the corresponding energy-consuming device can be replaced externally.

[0025] 5) All components in this invention can be manufactured and assembled in the factory. By pre-drilling holes in the structure, each component can be connected to the column base connection component of the concrete base assembly through the pre-set connection holes, thereby reducing the requirements for on-site operations and shortening the construction period. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the swing self-resetting steel frame structure based on the energy dissipation damper of the present invention;

[0027] Figure 2 This is a schematic diagram showing the connection relationship between the concrete base assembly and the column foot energy dissipation damper in this invention.

[0028] Figure 3 This is a schematic diagram of the concrete base assembly in this invention;

[0029] Figure 4 This is a schematic diagram of the concrete base structure in this invention;

[0030] Figure 5 This is a schematic diagram of the L-shaped connecting plate in this invention;

[0031] Figure 6 This is a schematic diagram of the copper plate structure in this invention;

[0032] Figure 7 This is a schematic diagram of the beam-column damping structure in this invention;

[0033] Figure 8 This is a schematic diagram of the column end fixator in this invention;

[0034] Figure 9 This is a schematic diagram showing the connection relationship between the column end fixator and the rotating shaft in this invention;

[0035] Figure 10 This is a schematic diagram of the rotating shaft structure in this invention;

[0036] Figure 11 This is a schematic diagram of the beam end fixation device in this invention;

[0037] Figure 12 This is a schematic diagram of the connection relationship between the steel beam and the beam end stabilizer in this invention;

[0038] Figure 13 This is a schematic diagram of the steel beam structure in this invention;

[0039] Figure 14 This is a schematic diagram of the beam-end stabilizer structure in this invention;

[0040] Figure 15 This is a schematic diagram of the structure of the L-shaped SMA fixing plate in this invention;

[0041] Figure 16 This is a schematic diagram of the beam-column damper and the foot energy-dissipating damper in this invention;

[0042] Figure 17 This is a cross-sectional view of the beam end node after all components have been assembled in this invention.

[0043] Among them, 1. steel beam, 2. steel column, 3. column end fixer, 4. pivot, 5. beam end fixer, 6. beam-column damper, 7. beam end stabilizer, 8. L-shaped SMA fixing plate, 9. column-beam SMA stranded wire, 10. L-shaped connecting plate, 11. copper plate, 12. column base SMA stranded wire, 13. connecting plate, 14. extrusion plate, 15. support rib plate, 16. fixing plate, 17. concrete base, 18. foot energy dissipation damper, 19. lower rib plate. Detailed Implementation

[0044] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0045] This invention relates to a swing self-resetting steel frame based on an energy-dissipating damper, such as... Figure 1 As shown, it includes multiple concrete base components arranged in a straight line. Each concrete base component is connected to a steel column 2 via a column foot energy dissipation damper. The connection between each concrete base component and the steel column 2 forms a column foot node. Multiple steel beams 1 are vertically connected between adjacent steel columns 2 through a beam-column damping structure. A beam-column node is formed between the steel column 2 and the steel beam 1. Gaps are arranged between the connection points of the column and beam, and between the column and the base in the node. Energy dissipation dampers are selected as the main energy dissipation devices for all connections. When the node sways and rotates, it can form plastic deformation, dissipate seismic energy, and thus reduce seismic damage and destruction of the node.

[0046] Each steel column 2 and steel beam 1 includes two parallel flanges, with multiple ribs connecting the two flanges.

[0047] like Figure 2 , Figure 3 As shown, each concrete base assembly includes a concrete base 17, such as Figure 4 As shown, a groove is formed in the concrete base 17, and a steel column 2 is installed in the groove of the concrete base 17. Multiple lower ribs 19 are connected to each concrete base 17, and connecting plates 13 parallel to the upper plane of the concrete base 17 are connected to the multiple lower ribs 19. The lower ribs 19 serve to fix and connect the concrete base 17 and the connecting plates 13, and also provide support for the connecting plates 13. An opening slightly larger than the outer dimensions of the steel column 2 is formed in the connecting plate 13, so that the steel column 2 can extend through the opening to the groove of the concrete base 17. Inside the trench, multiple extrusion plates 14 are connected at one end to the two flanges of the steel column 2 on the concrete base 17. The other end of the extrusion plate 14 passes through the connecting plate 13. The end of the extrusion plate 14 passing through the connecting plate 13 is connected to the flange plate to the column base energy dissipation damper 18. When vibration occurs, the extrusion plate 14 or the steel column 2 extrudes the column base energy dissipation damper 18, and the column base energy dissipation damper 18 dissipates energy through its own plastic deformation. Each flange of the steel column 2 is connected to the connecting plate 13 by an L-shaped connecting plate 10. The structure of the L-shaped connecting plate 10 is as follows: Figure 5 As shown.

[0048] A reinforcing plate is installed in the groove of the concrete base 17. The reinforcing plate contacts the steel column 2 to prevent the concrete base 17 from being cracked.

[0049] Multiple column base SMA stranded wires 12 are also connected between the bottom rib plate of each steel column 2 and the concrete base 17, which can achieve the column base self-resetting effect.

[0050] A copper plate 11 is installed between the steel column 2 and each L-shaped connecting plate 10. The structure of the copper plate 11 is as follows: Figure 6 As shown, the elliptical or elongated elliptical holes on the copper plate 11 can increase the frictional energy dissipation capacity between the steel beam 1 and the L-shaped connecting plate 10.

[0051] A support rib 15 extending to an L-shaped connecting plate 10 is connected to a concrete base 17. The support rib 15 is fixedly connected to two surfaces of the L-shaped connecting plate 10, and the support rib 15 can support the L-shaped connecting plate 10.

[0052] like Figure 7 , Figure 8 As shown, the beam-column damping structure includes two parallel column end retainers 3 connected to the steel column 2 by bolts. The structure of the column end retainer 3 is as follows: Figure 9 As shown, the column end fastener 3 is located between the two flange plates of the steel beam 1. Each column end fastener 3 has a semi-circular groove, and a rotating shaft 4 is connected to the semi-circular groove of each column end fastener 3 via screws. Figure 10 As shown, a fixing plate 16 is connected to each end of the rotating shaft 4. Each fixing plate 16 has a beam-column damper 6 and a beam end fixer 5 connected to its two sides by bolts. The beam end fixer 5 is as follows... Figure 11 As shown, a U-shaped steel structure is adopted. Each beam end fixer 5 is connected to the flange plate of the adjacent steel beam 1 by bolts. The beam end fixer 5 is also connected to the steel beam 1 by bolts to increase the contact area between the rotating shaft 4 and the steel beam 1, thereby increasing the force transmission and strength. Flange plates are welded between the two opposite surfaces of the U-shaped steel structure to make them flush with the cross section of the steel beam 1.

[0053] like Figure 9 As shown, the column end fixer 3 includes an integrated vertically connected column end fixing plate and a column end support plate, with a semi-circular groove provided on the column end support plate.

[0054] like Figure 12 , Figure 13 As shown, support plates are connected to both ends of the steel beam 1, and beam end stabilizers 7 are connected to the support plates. The beam end stabilizers 7 are sleeved on the outside of the rotating shaft 4. The structure of the beam end stabilizer 7 is as follows: Figure 14 As shown.

[0055] Both flanges of steel beam 1 are bolted to one side of L-shaped SMA fixing plates 8, and the other side of each L-shaped SMA fixing plate 8 is connected to steel beam 1 via column-beam SMA stranded wires 9. The structure of the L-shaped SMA fixing plate 8 is as follows: Figure 15 As shown, the internal welded stiffening ribs can stabilize the deformation of the SMA stranded wire 9 in the column beam.

[0056] Beam-column dampers and foot energy dissipation dampers are structured as follows: Figure 16 As shown, this is an elliptical elastic flange structure.

[0057] The assembly method for a swing self-resetting steel frame based on an energy dissipation damper is implemented according to the following steps:

[0058] A groove is created in each concrete base assembly, and a steel column 2 is connected to the groove of each concrete base assembly via a column base energy-dissipating damper. The column base energy-dissipating damper bears the force transmitted by the damper; specifically:

[0059] A support rib plate 15 and a lower rib plate 19 are pre-embedded outside the groove of the concrete base 17. The support rib plate 15 and the extrusion plate 14 are passed through the connecting plate 13 respectively. Then, the lower rib plate 19, the support rib plate 15, and the extrusion plate 14 are welded to the connecting plate 13. The steel column 2 is then passed through the connecting plate 13 and extended into the groove of the concrete base 17. The extrusion plate 14 also extends into the groove of the concrete base 17.

[0060] A beam-column damper 6 is bolted between the extrusion plate 14 and the flange plate of the steel column 2; an L-shaped connecting plate 10 is bolted between the flange plate of the steel column 2 and the connecting plate 13, and then a support rib 15 is welded inside the L-shaped connecting plate 10 to prevent the connecting plate 13 from buckling laterally. Multiple column base SMA stranded wires 12 are connected between the bottom rib plate of each steel column 2 and the concrete base 17.

[0061] Multiple steel beams 1 are connected between two adjacent steel columns 2, and a beam-column damping structure is connected between the steel beams 1 and the adjacent steel columns 2; specifically:

[0062] First, fix the column end fixing device 3 to the steel column 2, such as... Figure 17 As shown, the beam end stabilizer 7 is sleeved on the rotating shaft 4, and the rotating shaft 4 is fixed to the column end fixer 3; the beam end stabilizer 7 is fixedly connected to the support plate of the steel beam 1; the beam end fixer 5 is connected to the inner side of the flange plate of the steel beam 1 by bolts; the L-shaped SMA fixing plate 8 is fixed to the outer side of the flange plate of the steel beam 1; the two ends of the rotating shaft 4 are fixed with the fixing plate 16 by laser welding. In actual use, the welding can be completed in advance and installed directly on site, reducing on-site construction costs. A beam-column damper 6 is added between the beam end fixer 5 and the fixing plate 16, and the column-beam SMA stranded wire 9 is connected between the L-shaped SMA fixing plate 8 and the steel beam 1.

[0063] The working principle of the swing self-resetting steel frame based on the energy dissipation damper of this invention is as follows:

[0064] During installation, the column end fixer 3 can be bolted to the steel column 2 first; the beam end stabilizer 7 can be fitted onto the rotating shaft 4, and the rotating shaft 4 can be bolted to the column end fixer 3; the gap of the steel beam 1 section can be fitted onto the rotating shaft 4 and passed through the beam end stabilizer 7, and the beam end stabilizer 7 and the steel beam 1 can be bolted together; the beam end fixer 5 can be bolted to the flange of the steel beam 1, and ribs can be added between the flange plates of the beam end fixer 5 to increase strength; the beam-column damper 6 can be bolted into the gap between the beam end fixer 5 and the rotating shaft 4; one end of the column-beam SMA stranded wire 9 can be connected to the steel column 2, and the other end can be connected to the L-shaped SMA fixing plate 8, and the L-shaped SMA fixing plate 8 can be bolted together to the steel beam 1.

[0065] For the column base joint, first pour a concrete base 17, and simultaneously reserve a square groove in the center. A reinforcing plate can be placed in the square groove. The area of ​​the reinforcing plate is not less than the cross-sectional area of ​​the steel column. The supporting rib plate 15 located outside the square groove is pre-embedded in the concrete base 17. The reinforcing plate is placed in the square groove, and the supporting rib plate 15 located in the square groove is welded to the reinforcing plate. A connecting plate 13 is welded to the reinforcing plate. The steel column 2 is placed on the reinforcing plate through the hole opened on the connecting plate 13. The beam-column damper 6 is installed with bolts in the gap between the flange plate and the extrusion plate 14 of the steel column 2. One end of the column base SMA stranded wire 12 is connected to the steel column reinforcing plate, and the other end is connected to the connecting plate 13. One side of the L-shaped connecting plate 10 is connected to the flange of the steel column 2, and the other side is connected to the connecting plate 13. At the same time, a copper plate 11 is added between the steel column 2 and the L-shaped connecting plate 10 to increase friction.

[0066] During an earthquake, at the beam-column joint, the end of steel beam 1 swings relative to the pivot 4 via the beam end stabilizer 7. The beam-column damper 6 and the column-beam SMA strand 9 deform. The plastic deformation of the beam-column damper 6 dissipates energy, while simultaneously placing the column-beam SMA strand 9 on both sides of the steel beam 1 flange under tension to further dissipate seismic energy. After the earthquake, the column-beam SMA strand 9 self-resets due to its inherent properties. At the column base joint, steel column 2 swings within the H-shaped hole. The beam-column damper 6 and the SMA strand 12 deform. The plastic deformation of the beam-column damper 6 dissipates energy, placing the column base SMA strand 12 under tension and compression to dissipate seismic energy. Simultaneously, frictional energy dissipation occurs between the L-shaped connecting plates 10 on the outer flange of steel column 2. After the earthquake, the SMA strands self-reset due to their inherent properties.

[0067] Through the above-described method, this invention provides a swing-and-reset steel frame based on energy-dissipating dampers, comprising multiple linearly arranged concrete base components. Each concrete base component is connected to a steel column via a column-foot energy-dissipating damper. Adjacent steel columns are vertically connected to multiple steel beams via a beam-column damping structure. Under seismic loading, the connection between the steel column and the concrete base / beams dissipates energy through the swing-and-reset mechanism, causing the energy-dissipating dampers to undergo plastic deformation. This maintains the elasticity of the main structural components within the joint, improving seismic performance under strong earthquakes and effectively reducing damage to beam-column joints. This invention strengthens the self-reset function of the weaker side of the building structure by installing energy-dissipating devices and SMA strands on both sides of the column foot and column-beam joints. The number and position of the energy-dissipating dampers can be adjusted to meet different needs under various conditions. Both the beam-column joints and column foot joints of this invention utilize SMA strands to achieve the self-reset function. In this invention, the energy-dissipating devices are bolted to the outside of the structure. If the energy-dissipating devices are damaged after an earthquake, they can be replaced externally. In this invention, all components can be manufactured and assembled in the factory. By pre-drilling holes in the structure, each component can be connected to the column base connection component of the concrete base assembly through pre-set connection holes, thereby reducing the requirements for on-site operations and shortening the construction period.

Claims

1. A swing self-resetting steel frame based on an energy-dissipating damper, characterized in that, It includes multiple concrete base components arranged in a straight line, each of which is connected to a steel column (2) via a column foot energy dissipation damper, and multiple steel beams (1) are vertically connected between adjacent steel columns (2) through a beam-column damping structure. Each of the steel columns (2) and steel beams (1) includes two parallel flanges, with multiple ribs connecting the two flanges; The beam-column damping structure includes two parallel column end fixers (3) connected to the steel column (2) by bolts. The column end fixers (3) are located between the two flange plates of the steel beam (1). The two column end fixers (3) are provided with semi-circular grooves. The two column end fixers (3) are connected to the rotating shaft (4) by screws in the semi-circular grooves. The two ends of the rotating shaft (4) are connected to a fixing plate (16). The two sides of each fixing plate (16) are connected to the beam-column damper (6) and the beam end fixer (5) by bolts. The beam-column damper (6) is added between the beam end fixer (5) and the fixing plate (16). Each beam end fixer (5) is connected to the flange plate of the adjacent steel beam (1) by bolts. The beam end fixer (5) is also connected to the steel beam (1) by bolts. The beam end fixer (5) adopts a U-shaped steel structure. The flange plate is welded between the two opposite sides of the U-shaped steel structure to make it flush with the cross section of the steel beam (1). The steel beam (1) is connected to support plates at both ends, and beam end stabilizers (7) are connected to the support plates. The beam end stabilizers (7) are sleeved on the outside of the rotating shaft (4). The steel beam (1) has an L-shaped SMA fixing plate (8) bolted to one side of each of its two flanges, and the other side of each L-shaped SMA fixing plate (8) is connected to the steel beam (1) via a column-beam SMA strand (9).

2. The swing self-resetting steel frame based on an energy-dissipating damper according to claim 1, characterized in that, Each of the concrete base components includes a concrete base (17), on which a plurality of lower ribs (19) are connected, and on the plurality of lower ribs (19) are connected connecting plates (13) parallel to the upper plane of the concrete base (17). The steel column (2) passes through the connecting plates (13) and is connected to the concrete base (17). On the concrete base (17) between the two flanges of the steel column (2), one end of a plurality of extrusion plates (14) is connected, and the other end of the extrusion plates (14) passes through the connecting plates (13). One end of the extrusion plates (14) passing through the connecting plates (13) is connected to the flanges by a column foot energy-dissipating damper (18). Each flange of the steel column (2) is connected to the connecting plates (13) by an L-shaped connecting plate (10).

3. The swing self-resetting steel frame based on an energy-dissipating damper according to claim 2, characterized in that, Each of the steel columns (2) is also connected to a concrete base (17) by multiple column bottom SMA strands (12).

4. The swing self-resetting steel frame based on an energy-dissipating damper according to claim 2, characterized in that, A copper plate (11) is provided between the steel column (2) and each L-shaped connecting plate (10).

5. The swing self-resetting steel frame based on an energy-dissipating damper according to claim 2, characterized in that, The L-shaped connecting plate (10) is welded with a support rib (15), and the support rib (15) is fixedly connected to the two sides of the L-shaped connecting plate (10).

6. A method for assembling a swing self-resetting steel frame based on an energy-dissipating damper, characterized in that, The swing self-resetting steel frame based on an energy-dissipating damper according to any one of claims 2 to 5 is implemented according to the following steps: A steel column (2) is pre-embedded in each concrete base assembly, and a column foot energy-dissipating damper is connected between the concrete base assembly and the steel column (2). Multiple steel beams (1) are connected between two adjacent steel columns (2), and a beam-column damping structure is connected between the steel beams (1) and the adjacent steel columns (2).

Citation Information

Patent Citations

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