A sliding steel beam type eddy current damper for a building structure and a building

Abstract

The application discloses a sliding steel beam type eddy current damper for a building structure and a building, which comprises a concrete sliding floor, an extension rod, a support sliding rail seat, two conductor plates and permanent magnets.

Description

Technical Field

[0001] This invention relates to the field of structural vibration control or structural vibration reduction, and more specifically, to a control device and related building structures for the adverse vibration response of building structures under environmental loads. Background Technology

[0002] Natural disasters such as earthquakes, windstorms, and floods, as well as design and construction defects and material aging, can all threaten the safety and stability of building structures. Earthquakes, in particular, due to their randomness and unpredictability, often cause severe damage to building structures, even leading to casualties and property losses.

[0003] To mitigate the adverse vibrations generated by building structures under complex environmental effects such as strong winds, floods, and earthquakes, an effective control device is needed to improve the safety and stability of building structures. Structural vibration control technology is a newly emerging and popular discipline that has developed over the past 50 years. It plays a crucial role in improving the resistance of structural design to unforeseen events such as windstorms and earthquakes. However, most vibration reduction devices require additional interior space and rely on external energy sources for control, resulting in complex construction and high costs.

[0004] Furthermore, passive control, as a structural control technology that does not require external energy, employs damping elements. However, traditional viscous dampers suffer from leakage problems, high maintenance costs, and require sophisticated manufacturing processes, resulting in higher overall costs. Summary of the Invention

[0005] The purpose of this application is to provide a sliding steel beam type eddy current damper and building for building structures to address the adverse vibrations caused by complex environmental effects such as strong winds, floods and earthquakes. This is to improve the shortcomings of existing vibration reduction technologies, such as leakage problems of traditional viscous dampers, the need for external energy for control, complex construction and high maintenance and construction costs.

[0006] The embodiments of this application are implemented as follows: A sliding steel beam type eddy current damper for building structures, characterized in that it comprises: A concrete sliding floor slab (2) is set laterally relative to the structural column (1) of the building; The telescopic rod (3) connects the concrete sliding floor slab (2) to the structural column (1) and is configured to move the concrete sliding floor slab (2) away from or towards the structural column (1) when subjected to external force from the structural column (1); The support slide rail seat (4) is symmetrically arranged on both sides and has an I-shaped cross section. The upper surface of the I-shaped slide rail is provided with a slide rail groove to slide and support the sliding floor slab (2) through the slide rail device. One end of each side support slide rail is fixedly connected to the structural column (1). Permanent magnets (11) are provided on the inner side of the middle web of the support slide rail seat on both sides, so that the permanent magnets on the two opposite surfaces correspond one-to-one to form a permanent magnet group to generate magnetic field lines. Two conductor plates (20) are set back to back between the vertical support surfaces of the two side support rails and fixed by a magnetic field partition plate. The top of the magnetic field partition plate is fixedly connected to the sliding floor (2) and is used to drive the conductor plates (20) to cut the magnetic field lines of the permanent magnets (11) on both sides to generate eddy currents when the sliding floor (2) moves relative to each other, so as to generate a damping force that hinders the movement of the sliding floor (2).

[0007] In the above technical solution, a slide rail groove is provided on the top of the support slide rail seat (4) along the extension direction of the telescopic rod (3), and a slide rail (7) is provided between the slide rail groove and the contact surface of the concrete sliding floor slab (2). A rolling device that can roll in the slide rail groove is provided on the slide rail (7). The rolling device (9) is fixedly connected to the slide rail (7) through a bearing (10) and slides directionally along the slide rail groove.

[0008] In the above technical solution, the magnetic field isolation plate is a steel plate (19), the steel plate (19) is set at the midpoint of the line connecting the web between the two supporting slide rail seats (4), and the conductor plate (20) is fixed back to back on the two vertical surfaces of the magnetic field isolation plate.

[0009] In the above technical solution, the conductor plate (20) is made of copper.

[0010] In the above technical solution, the sliding floor slab (2) is connected to the concrete column (1) by a telescopic rod (3), so that a movable space is formed between the sliding floor slab (2) and the concrete column (1). The movable space is configured such that the telescopic rod (3) will also be relatively compressed or extended during the movement of the sliding floor slab (2). The number and specific location of the telescopic rod (3) are arranged according to the actual floor slab size.

[0011] In the above technical solution, the telescopic rod (3) has a circular base at both horizontal ends, and bolt holes are opened on the base. The telescopic rod is a telescopic sleeve structure with sections inserted one after another. It is generally composed of an inner rod and an outer sleeve. The inner rod can slide inside the outer sleeve and be fixed in different positions by a locking mechanism.

[0012] It can also be a common spiral telescopic rod or a spring telescopic rod.

[0013] The two ends of the telescopic rod (3) are connected and fixed to the contacting structural components by bolts (21).

[0014] In the above technical solution, the telescopic rod (3) is made of high-strength steel.

[0015] In the above technical solution, the material of the support slide rail seat (4) is high-strength steel.

[0016] In the above technical solution, the slide rail (7) is made of high-strength steel and is fixed to the concrete floor slab (2) by bolts (8).

[0017] In the above technical solution, the permanent magnet (11) is fixed by a grid-type permanent magnet fixing device, each grid is provided with a permanent magnet, and four grids are set as a group on the inner side of the middle web of the support slide rail seat on one side.

[0018] In the above technical solution, the permanent magnet fixing device includes a cover plate grid frame and a grid slot plate that matches and engages with the grid frame. After the two are combined, the permanent magnet is snapped into each grid, and the two are fixed by a frame-type fastener.

[0019] A vibration-damping building structure includes multiple floor slabs, characterized in that at least one of the floor slabs is a concrete sliding floor slab (2) for forming the aforementioned sliding steel beam type eddy current damper for building structures.

[0020] A method for reducing building vibration, characterized in that at least one of the floor slabs is a concrete sliding floor slab (2) used to form the above-mentioned sliding steel beam type eddy current damper for building structure; when the building structure is subjected to adverse loads such as wind or earthquake, the main structural frame, including the concrete columns, will undergo lateral displacement as a whole; the lateral displacement of the concrete columns will drive the steel beam supporting the sliding rail seat to move together; the relative sliding between the steel beam supporting the sliding rail seat and the concrete floor slab will form a "sliding floor slab", at which time the sliding floor slab will also undergo a certain displacement under the action of the telescopic rod and inertial force; The sliding floor slab moves the steel plate and the conductor copper plate. During the movement, the two conductor plates cut the magnetic field lines of the permanent magnets on both sides, thereby generating eddy currents. This generates a damping force that hinders the movement of the sliding floor slab. The damping force dissipates the energy of the building structure, thereby reducing the lateral displacement of the building structure caused by unfavorable loads and achieving the goal of energy dissipation and vibration reduction.

[0021] This application has at least one of the following beneficial effects: A vibration damper that can cut the magnetic field lines of a permanent magnet by generating relative displacement between the structure and the floor slab during vibration, thereby achieving the purpose of dynamic vibration absorption, realizes the goal of energy-consuming vibration reduction, does not rely on external energy, and is cost-effective.

[0022] Vibration damping devices that do not occupy the interior space of a building utilize the sliding floor itself as part of the damping structure, eliminating the need for additional mass blocks. This allows the vibration damping devices to be integrated into the building structure without affecting the building's functionality.

[0023] By reducing lateral displacement of building structures due to adverse loads, the goal of energy dissipation and vibration reduction is achieved, thereby improving the seismic performance of building structures. This is particularly important for vibration reduction solutions for building structures susceptible to natural disasters, where vibration reduction efficiency can be significantly improved.

[0024] It is cost-effective, not only reducing dependence on external energy sources, but also reducing maintenance costs due to the absence of liquid dampers, while improving the durability and service life of the structure. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 , Figure 2 These are three-dimensional schematic diagrams from different perspectives of the sliding steel beam eddy current damper used in building structures according to Embodiment 1 of the present invention. Figure 3 This is an overall diagram of the eddy current damping device in Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of the steel beam in Embodiment 1 of the present invention; Figure 5 This is a schematic diagram of the pulley device in Embodiment 1 of the present invention; Figure 6 This is a schematic diagram of the pulley in Embodiment 1 of the present invention; Figure 7 This is a schematic diagram of the steel plate connector of Embodiment 1 of the present invention; Figure 8 This is a schematic diagram of the permanent magnet and its fixing device in Embodiment 1 of the present invention; Figure 9 This is a schematic diagram of the conductor plate in Embodiment 1 of the present invention; Figure 10 This is a schematic diagram of the steel beam connector of Embodiment 1 of the present invention; Figure 11 This is a schematic diagram of the telescopic device in Embodiment 1 of the present invention; Figure 12 This is a front elevation view of Embodiment 1 of the present invention; Figure 13 This is a side elevation view of Embodiment 1 of the present invention; Figure 14 This is a top view of Embodiment 1 of the present invention; Figure 15This is a schematic diagram showing the installation position of a sliding steel beam eddy current damper for building structures, as provided in Embodiment 2 of this application.

[0027] In the diagram: 1. Concrete column; 2. Concrete floor slab; 3. Expansion bar; 4. I-beam slotted steel beam; 5. First connector; 6. First bolt; 7. Slide rail; 8. Second bolt; 9. Pulley; 10. Bearing; 11. Permanent magnet; 12. Permanent magnet fixing device; 13. Fixing base; 14. Fixing groove; 15. Permanent magnet fixing connector; 16. Third bolt; 17. Second connector; 18. Fourth bolt; 19. Steel plate; 20. Conductor copper plate; 21. Fifth bolt. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0033] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0034] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] The features and performance of this application will be further described in detail below with reference to the embodiments.

[0036] Example 1 As shown in the figure Figures 1-14 As shown in the embodiment of this application, a sliding steel beam type eddy current damper for building structures is provided, including a concrete sliding floor slab 2, a telescopic rod 3, a supporting slide rail seat or an I-shaped slotted steel beam 4, a slide rail 7, a pulley 9, a bearing 10, a permanent magnet fixing device 12, a permanent magnet 11, a fixing base 13, a fixing groove 14, a permanent magnet fixing connector 15, a steel plate 19, and a conductor plate 20. The sliding floor slab 2 is connected to the structural column 1 by the telescopic rod 3, and two I-shaped slotted steel beams 4 are connected to the structural column 1. A slide rail 7 is provided between the contact surfaces of the steel beams 4 and the sliding floor slab 2. A steel plate 19 is provided between the two I-shaped slotted steel beams 4, and the steel plate 19 is connected to the floor slab 2 by a connector 17. Conductor plates 20 are provided on both sides of the steel plate, and the conductor plates 20 are fixed to the steel plate 19 by bolts 2. A permanent magnet 11 is fixed to the inner side of the web of the steel beam 4.

[0037] The permanent magnets 11, steel plates 19, and conductor plates 20 are the core components of the eddy current damper. The eight permanent magnets 11 are divided into two groups of four, which are fixed to the web of the steel beam 4 by the permanent magnet fixing device 12. The two conductor plates 20 are separated by the steel plates 19 and are fixed to the two sides of the steel plates 19 by bolts 18.

[0038] The concrete floor slab 2 is a reinforced concrete structure. The side of the floor slab 2 that connects to the concrete column 1 is connected by a telescopic rod 3, thus creating a certain movable space between the floor slab 2 and the column. During the movement of the sliding floor slab 2, the telescopic rod 3 will also compress or extend relatively. The telescopic rod 3 has circular bases at both ends, with bolt holes on the bases. Both ends of the telescopic rod are connected and fixed to the structural components by fifth bolts 21.

[0039] The expansion joint 3 is made of high-strength steel, and its actual length is determined by the specific engineering requirements. The expansion joint 3 is not only an important connecting component between the floor slab 2 and the main structural column 1, but also a crucial element that allows the floor slab to "slide," while also providing a certain degree of elastic cushioning.

[0040] The I-beam slot 4 is made of high-strength steel. Two grooves are cut on the upper surface of the flange of the steel beam 4 to constrain the movement direction and trajectory of the pulley. Two steel beams 4 are selected and arranged on both sides of the steel plate 19. Each steel beam 4 is connected to the structural column 1 by two L-shaped connectors 5 and the first bolt 6.

[0041] The first connector 5 is made of high-strength steel and is L-shaped. Two L-shaped first connectors 5 are placed back to back to clamp the web of the steel beam 4 and then connected to the structural column 1 by the first bolt 6.

[0042] The slide rail 7 is made of high-strength steel. The slide rail 7 is set above the two grooves on the upper surface of the flange of the steel beam 4. The slide rail 7 is the same length as the steel beam 4 and is fixed to the concrete floor slab 2 by the second bolt 8.

[0043] The material of pulley 9 is selected according to the actual requirements of the project. Pulley 9 is fixedly connected to slide rail 7 through bearing 10 and slides directionally along the slide groove. The number of pulleys 9 is selected according to the actual specifications of the project. Several pulleys 9 and slide rail 7 together constitute a pulley system, which is an important moving element that can generate relative displacement between the sliding floor and the structure.

[0044] Permanent magnets 11, arranged in groups of four, are fixed to the web of steel beam 4 via permanent magnet fixing devices 12. The permanent magnet fixing devices 12 consist of a fixing base 13, a fixing groove 14, and permanent magnet fixing connectors 15, all made of high-strength steel. The fixing base 13 is a rectangular steel plate with bolt holes for easy installation. The middle area of ​​the steel plate has four rectangular permanent magnet fixing grooves 14, evenly distributed in a grid pattern with a certain spacing between them. Each rectangular groove holds one permanent magnet 11 to prevent movement. After the permanent magnets 11 are placed in the fixing grooves 14, they are covered by permanent magnet fixing connectors 15. The permanent magnet fixing connectors 15 are cross-shaped, with each end connected to a T-shape, the upper end of which is welded to the upper edge of the fixing groove. The entire permanent magnet fixing device 12 is connected to the web of steel beam 4 via a third bolt 16. This ensures that the permanent magnet mass block is firmly fixed in place, preventing it from falling off during normal operation of the eddy current damper.

[0045] The second connector 17 is made of high-strength steel. The second connector 17 is L-shaped, with two L-shaped second connectors 17 placed back to back, with a steel plate 19 sandwiched in the middle. One side of the second connector 17 is connected to the concrete floor slab by the fourth bolt 18, and the other side is connected to the steel plate 19 by the fourth bolt 18.

[0046] The steel plate 19 is made of high-strength steel. It is fixed by the second connector 17 and is parallel to the two steel beams. The steel plate not only serves to isolate the magnetic field and prevent mutual interference between them, but also supports the conductor plate 20.

[0047] The conductor plate 20 is made of copper. Two conductor plates 20 are respectively positioned on the left and right sides of the steel plate 19 and fixed by the fourth bolt 18. The function of the conductor plate 20 is to cut magnetic field lines to generate eddy currents; it is a crucial component in the formation of eddy currents.

[0048] When a building structure is subjected to adverse loads such as wind or earthquakes, the main structural frame, including the concrete column 1, undergoes lateral displacement. This lateral displacement of the concrete column 1 causes the steel beam 4 to move as well. Based on the principle of inertia, the upper surface of the steel beam flange, due to the combined action of the sliding groove, pulley system, and rails, causes relative slippage between the steel beam 4 and the concrete floor slab 2, forming a "sliding floor slab." At this point, the sliding floor slab 2 also undergoes some displacement under the action of the telescopic rod and inertial force. Furthermore, the sliding floor slab 2 moves the steel plate 19 and the conductor plate 20. During this movement, the two conductor plates 20 cut the magnetic field lines of the permanent magnets on both sides, generating eddy currents, which in turn generate a force that opposes the movement of the sliding floor slab 2—that is, a damping force. This damping force dissipates the energy of the building structure, thereby reducing lateral displacement caused by adverse loads and achieving the goal of energy dissipation and vibration reduction.

[0049] The size and specifications of the sliding floor slab 2 can be determined based on the actual building structure scale, the location of the building structure, and the actual purpose of the building structure. The number and specific locations of the telescopic rods 3 are arranged according to the actual floor slab dimensions. 11 sets of permanent magnets are symmetrically arranged on the left and right sides of the steel plate and fixed to the web of the I-beam 4, which can be regarded as a pair of 11 sets of permanent magnets. The number of pairs of permanent magnets can be determined according to the actual situation of the building structure.

[0050] The concrete floor slab serves as the structural floor slab where the building's structural damper is located. The construction principle of this sliding steel beam eddy current damper is as follows: A rectangular area of ​​the floor slab is designated as the sliding floor slab. This sliding floor slab is connected to the main structure via a telescopic rod element, creating a certain movable space between it and the structural floor slab. When the main structure vibrates and shifts laterally, it causes the steel beam and the structural floor slab to move. Due to the presence of the telescopic rod, a certain relative displacement occurs between the sliding floor slab and the main structure, thus forming the "sliding" floor slab. The sliding floor slab is considered the mass element of this sliding steel beam eddy current damper. No external mass block is required. The relative displacement between the structure and the floor slab during vibration cuts the magnetic field lines of the permanent magnet, achieving the purpose of dynamic vibration absorption.

[0051] The beneficial effects of this application are: the sliding steel beam eddy current damper provided in this embodiment retains the advantages of traditional TMD such as simple structure and convenient use, while avoiding the leakage problems caused by the presence of fluid in traditional viscous dampers. Utilizing the building's own floor slab as the mass element of the damping device, no external mass block is required. The relative displacement between the structure and the floor slab during vibration cuts the magnetic field lines of the permanent magnet, achieving the purpose of dynamic vibration absorption. Transforming ordinary building floor slabs into sliding floor slabs utilizes the existing structural components, eliminating the need for additional damper mass elements. This effectively expands the functionality of structural components and the application range and space of dampers. Using telescopic rods as connecting elements between the sliding floor slab and the main structure provides vibration reduction and energy dissipation. The design of guide rails and rollers allows the floor slab and steel beams to slide, generating relative displacement that cuts magnetic field lines and produces damping force. The sliding rails also control the direction of movement, indirectly controlling the vibration reduction direction. The steel plates not only isolate the magnetic field, preventing mutual interference, but also support the conductor plates. Two conductor plates are provided, and multiple permanent magnet groups can be installed. Compared to traditional plate-type eddy current dampers, this method utilizes the magnetic medium more efficiently, improving electromagnetic conversion efficiency.

[0052] Example 2 like Figure 15 As shown, based on Embodiment 1, a vibration-damping building structure is protected, including multiple floor slabs 200, at least one of which is a concrete sliding floor slab, used to form the sliding steel beam type eddy current damper for building structure 100 as described in Embodiment 1. The black part is the specific structure of the damper.

[0053] When building structure 1 is subjected to adverse loads such as wind or earthquake, the main structural frame, including the concrete columns, will undergo lateral displacement as a whole; the lateral displacement of the concrete columns will cause the steel beams supporting the sliding rails to move together; the relative slippage between the steel beams supporting the sliding rails and the concrete floor slab will form a "sliding floor slab", and the sliding floor slab will also undergo a certain displacement under the action of the telescopic rods and inertial forces. The sliding floor slab moves the steel plate and the conductor copper plate. During the movement, the two conductor plates cut the magnetic field lines of the permanent magnets on both sides, thereby generating eddy currents. This generates a damping force that hinders the movement of the sliding floor slab. The damping force dissipates the energy of the building structure, thereby reducing the lateral displacement of the building structure caused by unfavorable loads and achieving the goal of energy dissipation and vibration reduction.

Claims

1. A sliding steel beam type eddy current damper for building structures, characterized in that, include: A rectangular cross-section concrete sliding floor slab (2) is set laterally relative to the structural column (1) of the building; the sliding floor slab (2) is the original floor slab of the building structure, and its cross-section is rectangular, so no additional mass blocks are required; The telescopic rod (3) is horizontally installed between the sliding floor slab (2) and the structural column (1), connecting the rectangular section of the concrete sliding floor slab (2) to the structural column (1). It is configured to cause the concrete sliding floor slab (2) to move away from or towards the structural column (1) under the influence of external forces from the structural column (1), thereby generating a limited displacement. Two support rail seats (4) are steel beams with an I-shaped cross section, symmetrically arranged on both sides below the sliding floor slab (2); a sliding support structure is provided on the horizontal upper surface of the I-shaped steel beam to support the sliding floor slab (2), and a permanent magnet (11) is provided on the vertical inner side wall of each support rail seat (4), so that the permanent magnets on the two opposite vertical walls correspond one-to-one to form a permanent magnet group to generate magnetic field lines; Magnetic field partition plate (19); set at the midpoint of the line connecting the web between the two supporting slide rail seats (4), and fixedly connected to the top of the sliding floor plate (2), moving synchronously with the sliding floor plate (2); Two conductor plates (20) are fixed back to back on the two vertical surfaces of the magnetic field isolation plate (19) and located between the inner walls of the two side support slide rails (4); When the sliding floor slab (2) moves relative to the supporting slide rail seat (4), the magnetic field partition plate (19) is set to drive the conductor plate (20) to cut the magnetic field lines of the permanent magnets (11) on both sides to generate electric eddy currents, so as to generate a damping force that hinders the movement of the sliding floor slab (2).

2. The sliding steel beam type eddy current damper for building structures according to claim 1, characterized in that, A slide rail groove is provided on the top of the support slide rail seat (4) along the extension direction of the telescopic rod (3). A slide rail (7) is provided between the slide rail groove and the contact surface of the concrete sliding floor slab (2). A rolling device that can roll in the slide rail groove is provided on the slide rail (7). The rolling device (9) is fixedly connected to the slide rail (7) through the bearing (10) and slides directionally along the slide rail groove.

3. The sliding steel beam type eddy current damper for building structures according to claim 1, characterized in that, The magnetic field isolation plate (19) is made of at least one of steel or stainless steel, aluminum alloy plate, titanium alloy plate, manganese steel plate, chromium steel plate, and nickel alloy plate.

4. The sliding steel beam type eddy current damper for building structures according to claim 1, characterized in that, The conductor plate (20) is made of materials with good electrical conductivity, such as metal copper, aluminum, gold, zinc, iron, copper or aluminum alloys, copper-nickel alloys, aluminum-manganese alloys, graphite or carbon materials, and superconducting materials.

5. The sliding steel beam type eddy current damper for building structures according to claim 1, characterized in that, The sliding floor slab (2) is connected to the structural column (1) by a telescopic rod (3), so that a movable space is formed between the sliding floor slab (2) and the structural column (1), and the movable space is configured such that the telescopic rod (3) will also be relatively compressed or extended during the movement of the sliding floor slab (2).

6. The sliding steel beam type eddy current damper for building structures according to claim 1, characterized in that, The telescopic rod (3) is a telescopic sleeve structure with sections inserted one by one, or a spiral telescopic rod, or a spring telescopic rod.

7. The sliding steel beam type eddy current damper for building structures according to claim 1, characterized in that, The permanent magnet (11) is fixed by a grid-type permanent magnet fixing device, with one permanent magnet set in each grid, and four grids are set as a group on the inner side of the middle web of the support slide rail seat on one side.

8. The sliding steel beam type eddy current damper for building structures according to claim 1, characterized in that, The permanent magnet fixing device includes a cover plate grid frame and a grid slot plate that matches and engages with the grid frame. After the two are combined, the permanent magnet is snapped into each grid, and the two are fixed by a frame-type fastener.

9. A vibration-damping building structure, comprising the sliding steel beam eddy current damper for building structures as described in any one of claims 1-8.

10. A method for building vibration reduction, characterized in that, Including the sliding steel beam eddy current damper for building structures as described in any one of claims 1-8; when the building structure is subjected to adverse loads such as wind or earthquakes, the main structural frame, including the concrete columns, undergoes lateral displacement as a whole; The lateral displacement of the concrete column causes the steel beam supporting the slide rail to move together; the relative slippage between the steel beam supporting the slide rail and the concrete floor slab forms a "sliding floor slab". At this time, the sliding floor slab will also have a certain displacement under the action of the telescopic rod and inertial force. The sliding floor slab drives the magnetic field partition plate (19) and the conductor plate to move. During the movement, the two conductor plates cut the magnetic field lines of the permanent magnets on both sides, thereby generating eddy currents. Then, a damping force is generated to hinder the movement of the sliding floor slab. The damping force dissipates the energy of the building structure, thereby reducing the lateral displacement of the building structure caused by unfavorable loads and achieving the goal of energy dissipation and vibration reduction.

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