Sliding steel beam type eddy current damper for building structure and building

Abstract

The invention discloses a sliding steel beam type eddy current damper for a building structure and a building. The sliding steel beam type eddy current damper comprises a concrete sliding floor. The concrete sliding floor (2) is connected to a structural column through the telescopic rod; the upper surfaces of the supporting sliding rail seats support the sliding floor in a sliding mode, permanent magnets are arranged on the inner sides of the supporting sliding rail seats on the two sides, and the permanent magnets on the two opposite faces are in one-to-one correspondence. The two conductor plates (20) are arranged back to back and used for driving the conductor plates (20) to cut magnetic induction lines of the permanent magnets (11) on the two sides to generate eddy current when the sliding floor slabs (2) move relatively so as to generate damping force for hindering movement of the sliding floor slabs (2). The internal use space of a building is not occupied, the sliding floor is adopted to form a part of a damping structure, so that the vibration reduction device can be integrated into the building structure, the use function of the building is not affected, the liquid leakage problem of a viscous damper in the existing vibration reduction technology can be solved, dependence on external energy is not needed, maintenance is convenient, and the cost is low.

Description

Technical Field

[0001] The present invention relates to the field of structural vibration control or structural vibration reduction, and in particular to a control device for adverse vibration response generated by a building structure under environmental load and a related building structure. Background Art

[0002] Natural disasters such as earthquakes, winds, and floods, as well as defects in design and construction, aging materials, etc., may threaten the safety and stability of building structures. Earthquakes, in particular, often cause serious damage to building structures due to their randomness and unpredictability, and even lead to casualties and property losses.

[0003] In view of the adverse vibrations generated by building structures when they are subjected to complex environmental effects such as strong winds, floods and earthquakes, an effective control device is needed to reduce these vibrations in order to improve the safety and stability of building structures. Structural vibration control technology is an emerging hot subject developed in the past 50 years. It plays a vital role in improving the resistance of traditional structural design to irresistible factors such as wind disasters and earthquakes. However, most vibration reduction devices require additional use space inside the building and need to rely on external energy control. The structure is complex and the cost is high.

[0004] In addition, passive control, as a structural control technology that does not require external energy, uses damping elements. However, traditional viscous dampers have leakage problems, high maintenance costs, and high manufacturing process requirements, which are also high in cost. Summary of the invention

[0005] The purpose of the present application is to provide a sliding steel beam type eddy current damper and a building for building structures, in order to address the adverse vibrations generated when the building structures are subjected to complex environmental effects such as strong winds, floods and earthquakes, so as to improve the defects of the conventional viscous damper in the existing vibration reduction technology, such as leakage problems, the need to rely on external energy for control, and the complex structure, maintenance and high construction costs.

[0006] The embodiment of the present application is implemented as follows: A sliding steel beam type eddy current damper for a building structure, characterized by comprising: A concrete sliding floor slab (2) is disposed transversely relative to the structural columns (1) of the building; A telescopic rod (3) connects the concrete sliding floor (2) to the structural column (1) and is configured to carry the concrete sliding floor (2) away from or close to the structural column (1) when subjected to an external force from the structural column (1); The support 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 support the sliding floor (2) through a slide rail device. One end of each side support rail is fixedly connected to the structural column (1). Permanent magnets (11) are arranged on the inner side of the middle web of the support rail seats on both sides, so that the permanent magnets on the two opposite surfaces correspond to each other to form a permanent magnet group to generate magnetic flux lines. Two conductor plates (20) are arranged back to back between vertical support surfaces of two side support rails and fixed via a magnetic field partition plate, the top of the magnetic field partition plate being fixedly connected to the sliding floor (2) and used to drive the conductor plates (20) to cut the magnetic flux lines of the permanent magnets (11) on both sides to generate eddy currents when the sliding floor (2) moves relative to each other, thereby generating a damping force that hinders the movement of the sliding floor (2).

[0007] In the above technical solution, a slide rail groove is arranged on the top of the support slide rail seat (4) along the telescopic direction of the telescopic rod (3), a slide rail (7) is arranged between the contact surface of the slide rail groove and the concrete sliding floor (2), and a rolling device that can roll in the slide rail groove is arranged 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 partition plate is a steel plate (19), the steel plate (19) is arranged at the midpoint of the line connecting the middle webs of the two supporting slide rail seats (4), and the conductor plates (20) are fixedly arranged back to back on the two vertical surfaces of the magnetic field partition plate.

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

[0010] In the above technical solution, the sliding floor (2) is connected to the concrete column (1) at one side thereof by a telescopic rod (3), so that a movable space is formed between the sliding floor (2) and the concrete column (1), and the movable space is configured such that when the sliding floor (2) moves, the telescopic rod (3) will also be relatively compressed or extended accordingly. The number and specific positions of the telescopic rods (3) are arranged according to the actual floor size.

[0011] In the above technical solution, the two horizontal ends of the telescopic rod (3) are circular bases with bolt holes on the bases. The telescopic rod is a telescopic sleeve structure that is sleeved section by section, generally consisting of an inner rod and an outer sleeve. The inner rod can slide in the outer sleeve and be fixed at different positions by a locking mechanism.

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

[0013] Both ends of the telescopic rod (3) are connected and fixed to the contacting structural member via bolts (21).

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

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

[0016] In the above technical solution, the material of the slide rail (7) is high-strength steel, and is fixed to the concrete floor (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 arranged as a group on the inner side of the middle web of the supporting slide rail seat on one side.

[0018] In the above technical solution, the permanent magnet fixing device includes a cover-type grid frame and a grid slot plate matched with the grid frame. After the two are combined, the permanent magnet is buckled in each grid, and the two are fixed by a frame-type structural fastener.

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

[0020] A building vibration reduction method, characterized in that at least one of the floors is a concrete sliding floor (2) for forming the above-mentioned sliding steel beam type eddy current damper for building structures; when the building structure is subjected to adverse loads such as wind or earthquake, the main structural frame including the concrete column moves sideways as a whole; the sideways movement of the concrete column drives the steel beam supporting the slide rail seat to move together; relative sliding occurs between the steel beam supporting the slide rail seat and the concrete floor to form a "sliding floor", and at this time the sliding floor will also produce a certain displacement under the action of the telescopic rod and the inertial force; The sliding floor drives the steel plate and the conductor copper plate to move. During the movement, the two conductor plates cut the magnetic flux lines of the permanent magnets on both sides to generate eddy currents, and then generate a damping force to hinder the movement of the sliding floor. The damping force dissipates the energy of the building structure, thereby reducing the lateral displacement of the building structure caused by adverse loads and achieving the goal of energy consumption and vibration reduction.

[0021] This application has at least one of the following beneficial effects: A vibration absorber that can cut the magnetic flux lines of a permanent magnet by causing relative displacement between the structure and the floor during vibration, thereby achieving the purpose of dynamic vibration absorption. This achieves the goal of energy-consuming vibration reduction without relying on external energy and is highly cost-effective.

[0022] The vibration reduction device does not occupy the internal usable space of the building. The sliding floor itself is used as a part of the damping structure. There is no need to set up a separate mass block, so that the vibration reduction device can be integrated into the building structure without affecting the use function of the building.

[0023] By reducing the lateral displacement of the building structure due to adverse loads, the goal of energy dissipation and vibration reduction is achieved, thereby improving the seismic performance of the building structure. In particular, it is a vibration reduction solution for building structures that are easily affected by natural disasters. It can significantly improve the vibration reduction efficiency.

[0024] Highly cost-effective, it not only reduces the reliance on external energy sources, but also reduces maintenance costs due to the absence of liquid dampers, while increasing the durability and service life of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 , Figure 2 Schematic diagram of a sliding steel beam eddy current damper for a building structure according to Embodiment 1 of the present invention from different viewing angles; Figure 3 This is a general diagram of the eddy current damping device according to Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of a steel beam in Example 1 of the present invention; Figure 5 This is a schematic diagram of a pulley device according to Embodiment 1 of the present invention; Figure 6 This is a schematic diagram of a pulley in Example 1 of the present invention; Figure 7 This is a schematic diagram of a steel plate connecting piece according to Example 1 of the present invention; Figure 8 This is a schematic diagram of a permanent magnet and a fixing device thereof according to Embodiment 1 of the present invention; Fig. 9 This is a schematic diagram of a conductor plate according to Embodiment 1 of the present invention; Fig.10 This is a schematic diagram of a steel beam connecting member according to Embodiment 1 of the present invention; Fig.11 This is a schematic diagram of a telescopic device according to embodiment 1 of the present invention; Fig.12 This is a front elevation view of Embodiment 1 of the present invention; Fig.13 It is a side elevation view of Embodiment 1 of the present invention; Fig.14 It is a top view of Embodiment 1 of the present invention; Fig.15A schematic diagram of the installation position of a sliding steel beam type eddy current damper for a building structure provided in Example 2 of the present application.

[0027] In the figure: 1. concrete column; 2. concrete floor; 3. telescopic rod; 4. I-shaped slotted steel beam; 5. first connecting piece; 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 connecting piece; 16. third bolt; 17. second connecting piece; 18. fourth bolt; 19. steel plate; 20. conductor copper plate; 21. fifth bolt. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

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

[0032] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "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 clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0034] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0035] The features and performance of the present application are further described in detail below in conjunction with the embodiments.

[0036] Example 1 As shown Figure 1 to Figure 14 As shown, the embodiment of the present application provides a sliding steel beam type eddy current damper for building structures, including a concrete sliding floor 2, a telescopic rod 3, a support 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 fixed base 13, a fixed groove 14, a permanent magnet fixing connector 15, a steel plate 19, and a conductor plate 20. The sliding floor 2 is connected to the structural column 1 through the telescopic rod 3, the two I-shaped slotted steel beams 4 are connected to the structural column 1, and a slide rail 7 is provided between the contact surface of the steel beam 4 and the sliding floor 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 2 through 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 plates 19 by bolts 2, and a permanent magnet 11 is fixed to the inner side of the web of the steel beam 4.

[0037] The permanent magnets 11, the steel plate 19 and the conductor plate 20 are the core components of the eddy current damper. The eight permanent magnets 11 are divided into two groups, four in each group, and 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 plate 19 and fixed to the two side surfaces of the steel plate 19 by bolts 18.

[0038] The concrete floor 2 is a reinforced concrete structure. The floor 2 is connected to the concrete column 1 by a telescopic rod 3, that is, a certain movable space is formed between the floor 2 and the structural floor 2. During the movement of the sliding floor 2, the telescopic rod 3 will also be relatively compressed or extended. The two ends of the telescopic rod 3 are circular bases with bolt holes, and the two ends of the telescopic rod are connected and fixed to the structural member by a fifth bolt 21.

[0039] The telescopic rod 3 is made of high-strength steel, and the actual length of the telescopic rod 3 is determined by the actual project situation. The telescopic rod 3 is not only an important connecting member between the floor 2 and the main structural column 1, but also an important element that allows the floor to "slide", and can also play a certain elastic buffering role.

[0040] The I-shaped slot 4 is made of high-strength steel, and two grooves are opened on the upper surface of the flange of the steel beam 4 to constrain the moving 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 through two L-shaped connectors 5 and a first bolt 6.

[0041] The first connecting member 5 is made of high-strength steel and is L-shaped. Two L-shaped first connecting members 5 are placed back to back to clamp the web of the steel beam 4 and then connected to the structural column 1 through the first bolts 6 .

[0042] The material of the slide rail 7 is high-strength steel. The slide rail 7 is arranged above the two grooves on the upper surface of the flange of the steel beam 4. The slide rail 7 is equal in length to the steel beam 4 and is fixed to the concrete floor 2 by a second bolt 8.

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

[0044] Permanent magnets 11, four per group, are fixed on the web of the steel beam 4 by a permanent magnet fixing device 12. The permanent magnet fixing device 12 is composed of a fixed base 13, a fixed groove 14 and a permanent magnet fixing connector 15, all of which are made of high-strength steel. The fixed base 13 is a rectangular steel plate, and bolt holes are provided on the steel plate for easy installation and connection. A permanent magnet fixing groove 14 is provided in the middle area of ​​the steel plate. The permanent magnet fixing groove 14 is four rectangles, which are evenly distributed in a field shape, with a certain spacing in the middle. A permanent magnet 11 is fixed in each rectangular groove to prevent it from moving. After the permanent magnet 11 is placed in the fixing groove 14, it is covered with a permanent magnet fixing connector 15. The permanent magnet fixing connector 15 is in a "cross" shape, and each end point is connected to a "D" shape, and the upper end of the "D" shape is welded to the upper edge of the fixing groove. The entire permanent magnet fixing device 12 is connected to the web of the steel beam 4 via a third bolt 16. In this way, the permanent magnet mass block can be firmly fixed to prevent it from falling during normal operation of the eddy current damper.

[0045] The second connecting member 17 is made of high-strength steel. The second connecting member 17 is L-shaped, and two L-shaped second connecting members 17 are placed back to back with a steel plate 19 sandwiched between them. One side of the second connecting member 17 is connected to the concrete floor slab through the fourth bolt 18, and the other side is connected to the steel plate 19 through the fourth bolt 18.

[0046] The steel plate 19 is made of high-strength steel. The steel plate 19 is fixed by the second connecting member 17 and is parallel to the two steel beams. The steel plate not only blocks the magnetic field to prevent the magnetic fields from affecting each other, but also supports the conductor plate 20.

[0047] The conductor plate 20 is made of copper. Two conductor plates 20 are respectively arranged on the left and right sides of the steel plate 19 and fixed by the fourth bolt 18. The conductor plate 20 is used to cut the magnetic flux lines to generate eddy currents, and is an important element for the formation of eddy currents.

[0048] When the building structure is subjected to adverse loads such as wind or earthquake, the main structural frame including the concrete column 1 will shift sideways as a whole. The lateral displacement of the concrete column 1 drives the steel beam 4 to move together. According to the principle of inertia generation, due to the joint action of the slideway, pulley block and slide rail on the upper surface of the steel beam flange, relative slip occurs between the steel beam 4 and the concrete floor slab 2, forming a "sliding floor slab". At this time, the sliding floor slab 2 will also produce a certain displacement under the action of the telescopic rod and inertia force. Furthermore, the sliding floor slab 2 drives the steel plate 19 and the conductor plate 20 to move. During the movement, the two conductor plates 20 cut the magnetic flux lines of the permanent magnets on both sides to generate eddy currents, and then generate a force that hinders the movement of the sliding floor slab 2, that is, the damping force. The damping force dissipates the energy of the building structure, thereby reducing the lateral displacement of the building structure caused by adverse loads, thereby achieving the goal of energy consumption and vibration reduction.

[0049] The size of the sliding floor 2 can be determined by the actual scale of the building structure, the area where the building structure is located, and the actual use of the building structure. The number and specific locations of the telescopic rods 3 are arranged according to the actual floor size. The permanent magnets 11 are symmetrically arranged on the left and right sides of the steel plate and fixed on the web of the I-shaped steel beam 4, and are regarded as a pair of permanent magnets 11. The number of pairs of permanent magnets 11 can be determined according to the actual situation of the building structure.

[0050] The concrete floor is the structural floor of the building structure damper. The construction principle of the sliding steel beam type eddy current damper is as follows: a rectangular area of ​​the floor structure floor is taken as the sliding floor. The sliding floor is connected to the main structure through a retractable telescopic rod element, that is, a certain movable space is formed between the sliding floor and the structural floor. When the main structure vibrates and moves sideways, it drives the steel beam and the structural floor to move. Due to the existence of the telescopic rod, a certain relative displacement occurs between the sliding floor and the main structure, that is, a "sliding" floor is formed. The sliding floor is regarded as the mass element of the sliding steel beam type eddy current damper. No external mass block is required. The relative displacement between the structure and the floor during the vibration process is used to cut the magnetic flux lines of the permanent magnet, so as to achieve the purpose of dynamic vibration absorption.

[0051] The beneficial effects of the present application are as follows: the sliding steel beam eddy current damper provided in the present embodiment maintains the advantages of the traditional TMD such as simple structure and convenient use, while avoiding the problems of leakage caused by the presence of fluid in the traditional viscous damper. The building's own floor is used as the mass element of the damping device, without the need for an external mass block, and the relative displacement between the structure and the floor during vibration is used to cut the magnetic flux lines of the permanent magnet, thereby achieving the purpose of dynamic vibration absorption. The ordinary building structure floor is transformed into a sliding floor, and the original components of the structure are utilized. There is no need to introduce additional damper mass elements, which effectively expands the use functions of the structural components and the use range and use space of the damper; the telescopic rod is used as a connecting element between the sliding floor and the main structure, which can play a role in vibration reduction and energy consumption to a certain extent; the design of the guide rail and the roller allows the floor and the steel beam to slide to produce relative displacement, thereby cutting the magnetic flux lines to generate damping force, and the slide rail can also control the movement direction, indirectly controlling the vibration reduction direction; the steel plate not only plays a role in isolating the magnetic field to avoid mutual influence between the magnetic fields, but also plays a role in supporting the conductor plate; there are two conductor plates, and multiple permanent magnet groups can be set. Compared with the traditional plate-type eddy current damper, it can more efficiently utilize the magnetic medium and improve the electromagnetic conversion efficiency.

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

[0053] When the building structure 1 is subjected to adverse loads such as wind or earthquake, the main structural frame including the concrete column will shift sideways as a whole; the lateral shift of the concrete column drives the steel beam supporting the slide rail seat to move together; the steel beam supporting the slide rail seat and the concrete floor slab will slide relative to each other to form a "sliding floor slab", and the sliding floor slab will also shift to a certain extent under the action of the telescopic rod and inertia force; The sliding floor drives the steel plate and the conductor copper plate to move. During the movement, the two conductor plates cut the magnetic flux lines of the permanent magnets on both sides to generate eddy currents, and then generate a damping force to hinder the movement of the sliding floor. The damping force dissipates the energy of the building structure, thereby reducing the lateral displacement of the building structure caused by adverse loads and achieving the goal of energy consumption and vibration reduction.

[0054] The embodiments described above are part of the embodiments of the present application, rather than all of the embodiments. The detailed description of the embodiments of the present application is not intended to limit the scope of the present application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

Claims

1. A sliding steel beam eddy current damper for building structures, characterized in that: include: A concrete sliding floor slab (2) is disposed transversely relative to the structural columns (1) of the building; A telescopic rod (3) connects the concrete sliding floor (2) to the structural column (1) and is configured to carry the concrete sliding floor (2) away from or close to the structural column (1) when subjected to an external force from the structural column (1); The support rail seats (4) are symmetrically arranged on both sides and have an I-shaped cross section. The upper surface of the I-shaped slide is provided with a sliding support for the sliding floor (2). Permanent magnets (11) are arranged on the inner sides of the support rail seats on both sides, so that the permanent magnets on the two opposite surfaces correspond to each other to form a permanent magnet group to generate magnetic flux lines. Two conductor plates (20) are arranged back to back between vertical support surfaces of two side support rails and fixed via a magnetic field partition plate, the top of the magnetic field partition plate being fixedly connected to the sliding floor (2) and used to drive the conductor plates (20) to cut the magnetic flux lines of the permanent magnets (11) on both sides to generate eddy currents when the sliding floor (2) moves relative to each other, thereby generating a damping force that hinders the movement of the sliding floor (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 arranged at the top of the support slide rail seat (4) along the telescopic direction of the telescopic rod (3), a slide rail (7) is arranged between the contact surface of the slide rail groove and the concrete sliding floor (2), and a rolling device that can roll in the slide rail groove is arranged 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.

3. The sliding steel beam type eddy current damper for building structures according to claim 1, characterized in that: The magnetic field partition 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. The magnetic field partition plate (19) is arranged at the midpoint of the line connecting the middle webs of the two supporting slide rail seats (4), and the conductor plates (20) are fixedly arranged back to back on the two vertical surfaces of the magnetic field partition 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 a material having good electrical conductivity such as metal copper, aluminum, gold, zinc, iron, copper or aluminum alloy, copper-nickel alloy, aluminum-manganese alloy, graphite or carbon material, superconducting material, etc.

5. The sliding steel beam type eddy current damper for building structures according to claim 1, characterized in that: The sliding floor (2) is connected to the concrete column (1) on one side thereof via a telescopic rod (3), so that a movable space is formed between the sliding floor (2) and the concrete column (1), and the movable space is configured such that when the sliding floor (2) moves, the telescopic rod (3) is also relatively compressed or extended.

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 that is sleeved section by section, 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, each grid is provided with a permanent magnet, and four grids are arranged as a group on the inner side of the middle web of the supporting 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 comprises a cover plate type grid frame and a grid slot plate matched with the grid frame. After the two are combined, the permanent magnet is buckled in each grid, and the two are fixed by a frame type structural fastener.

9. A vibration-damping building structure, comprising a plurality of floor slabs, characterized in that At least one of the floor slabs is a concrete sliding floor slab (2) for forming the sliding steel beam type eddy current damper for building structures as described in any one of claims 1 to 8.

10. A method for reducing building vibration, characterized in that: At least one of the floors is a concrete sliding floor (2), which is used to form the sliding steel beam type eddy current damper for building structures as described in any one of claims 1 to 8; when the building structure is subjected to adverse loads such as wind or earthquake, the main structural frame including the concrete columns will shift sideways as a whole; The lateral movement of the concrete column drives the steel beam supporting the slide rail seat to move together; the relative sliding between the steel beam supporting the slide rail seat and the concrete floor slab forms a "sliding floor slab", at which time the sliding floor slab will also produce a certain displacement under the action of the telescopic rod and inertia force; The sliding floor drives the steel plate and the conductor copper plate to move. During the movement, the two conductor plates cut the magnetic flux lines of the permanent magnets on both sides to generate eddy currents, and then generate a damping force to hinder the movement of the sliding floor. The damping force dissipates the energy of the building structure, thereby reducing the lateral displacement of the building structure caused by adverse loads and achieving the goal of energy consumption and vibration reduction.

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