An assembled viscoelastic adjustable self-resetting support

Abstract

This invention provides a prefabricated viscoelastic adjustable self-resetting brace, solving the problem of large post-earthquake plastic deformation, severe damage that is difficult to repair or prohibitively expensive to repair in buckling-restrained braces, which necessitates building demolition and severely impacts the building's post-earthquake recovery capability. Under tension or compression, the central elastic restoring element stores elastic potential energy. After the stress ends, this stored elastic potential energy provides the self-resetting capability, allowing the brace to return to its original state. The upper and lower rows of SMA strands are always under tension, utilizing the superelasticity of the SMA strands to dissipate energy. After the stress ends, the self-resetting performance of the SMA strands allows it to return to its original state. During assembly, the tension of the SMA strands can be adjusted using a tension adjustment component, allowing the prestress for the self-resetting capability of the buckling-restrained brace to be adjusted in advance during installation, providing a more suitable self-resetting capability for the brace.

Description

Technical Field

[0001] This invention relates to the field of seismic resistance technology in buildings, and in particular to a prefabricated viscoelastic adjustable self-resetting support. Background Technology

[0002] Earthquakes are among the most devastating natural disasters, causing irreparable damage to buildings and resulting in significant economic losses. To resist or mitigate the impact of earthquakes on building components, energy dissipation and vibration reduction devices have been increasingly widely used in structures in recent years. Buckling-restrained braces, as an important seismic-resistant device, can provide vibration reduction and energy dissipation effects when applied to buildings.

[0003] While traditional buckling-restrained braces (BRBs) can provide seismic energy dissipation, they often undergo significant plastic deformation and become unusable after an earthquake. Damaged BRBs not only cause economic losses, but severe damage is also difficult to repair or too costly to repair, and may even necessitate the demolition of buildings, severely impacting their post-earthquake recovery capabilities and creating unnecessary trouble for post-disaster reconstruction. This contradicts the green building principles advocated in my country. Therefore, it is necessary to improve these traditional seismic buckling-restrained brace devices. Summary of the Invention

[0004] To address the problem in the background art that traditional buckling-restrained braces suffer from large post-earthquake plastic deformation, severe damage that is difficult to repair or has excessively high repair costs, which necessitates the demolition of buildings and seriously affects their post-earthquake recovery capabilities, this invention proposes a prefabricated viscoelastic adjustable self-resetting brace.

[0005] The technical solution of the present invention is: an assembled viscoelastic adjustable self-resetting support, including an upper cover plate and a lower cover plate extending in the left and right direction, the upper cover plate being located directly above the lower cover plate, an elastic reset member being provided between the upper cover plate and the lower cover plate, and vertically arranged sliding baffles being provided at both ends of the elastic reset member, the sliding baffles being slidably disposed between the upper cover plate and the lower cover plate.

[0006] Two limiting strips are fixedly provided on opposite sides of the upper and lower cover plates. The limiting strips on the upper and lower cover plates correspond vertically and have a gap between them. The limiting strips extend in the front-back direction and are located on the side of the sliding baffle away from the elastic reset member. The limiting strips on the left and right sides are used to limit the left and right sliding distance of the two sliding baffles.

[0007] The upper and lower cover plates are abutted against vertically arranged sliding cover plates at both ends. The sliding baffle and the sliding cover plate are provided with insertion holes that correspond to the gap between the upper and lower limit strips and are open to the left and right. The insertion holes on the sliding baffle and the sliding cover plate and the gap between the upper and lower limit strips are all provided with tension plates extending in the left and right direction. The elastic reset component is sleeved on the tension plate.

[0008] The upper and lower ends of the sliding cover plate extend to the upper and lower outer sides of the upper and lower cover plates. The outer side of the upper cover plate, lower cover plate and sliding cover plate is fitted with an outer sleeve, which is a U-shaped plate structure with an opening at the right end.

[0009] The inner sides of the top and bottom plates of the outer sleeve are each fixedly provided with two left and right spaced limit baffles. The sliding cover plate moves against the outer side of the two left and right limit baffles. The upper and lower limit baffles are fixedly connected to the upper cover plate and the lower cover plate, respectively.

[0010] The left side of the tension plate is fixedly fitted with two first restraints spaced apart on the left and right. The left sliding cover plate is located between the two first restraints, and the left and right distance between the two first restraints is greater than the thickness of the sliding cover plate. The first restraints are used to prevent the sliding cover plate from coming off the tension plate.

[0011] Two second constraint devices are fixedly sleeved on the right side of the tension plate, spaced apart on the left and right. The sliding cover plate on the right side is located between the two second constraint devices, and the left and right distance between the two second constraint devices is equal to the left and right distance between the two first constraint devices. The two sliding cover plates simultaneously abut against the outside of the adjacent first and second constraint devices on the left and right.

[0012] The limiting baffle has open wire holes on both sides. SMA stranded wires extending in the left and right directions are inserted into the wire holes on the limiting baffles on both sides. Tension adjustment components are provided at both ends of the SMA stranded wires. The tension adjustment components are detachably fixed on the sliding cover plate. The tension adjustment components are used to adjust the tension of the SMA stranded wires.

[0013] There is a first movable cavity between the left end plate of the outer sleeve and the left sliding cover plate, which allows the left sliding cover plate to slide to the left. The right end of the stretching plate extends beyond the upper and lower cover plates.

[0014] Preferably, a viscoelastic damping block extending in the left-right direction is fixedly sleeved on the tension plate between the limiting strip and the sliding cover plate. The viscoelastic damping block is mainly made of viscoelastic material, and the top of the viscoelastic damping block is fixedly connected to the bottom of the upper cover plate, and the bottom of the viscoelastic damping block is fixedly connected to the top of the lower cover plate.

[0015] Preferably, the tension adjustment component includes SMA adjustment bolts fixedly disposed at the left and right ends of the SMA strand, the SMA adjustment bolts include SMA adjustment screws and adjustment nuts threaded onto the SMA adjustment screws, one end of the SMA adjustment screws being fixedly connected to the end of the SMA strand;

[0016] The sliding cover plate has screw holes corresponding to the left and right sides of the SMA adjusting screw. The SMA adjusting screw is movably inserted into the screw holes, and the adjusting nut is located on the side of the sliding cover plate away from the upper and lower cover plates.

[0017] The SMA adjusting bolts on the left and right sides work together to adjust the tension of the SMA stranded wire.

[0018] Preferably, the limiting strip has a slot on the side facing the sliding baffle, and the side of the sliding baffle away from the elastic reset member is engaged in the slot on the limiting strip.

[0019] Preferably, the sliding baffle is an inverted T-shaped block structure, and the protruding part of the sliding baffle is movably inserted into the gap between the upper and lower limiting strips.

[0020] Preferably, there is a second movable cavity between the right end of the outer sleeve and the right sliding cover plate, allowing the right sliding cover plate to slide to the right.

[0021] Preferably, a first arched connector is provided between the viscoelastic damping block and the limiting strip, and a second arched connector is provided between the viscoelastic damping block and the sliding cover plate. The first and second arched connectors are sleeved on the outside of the tension plate. The lower ends of the first and second arched connectors are fixedly connected to the lower cover plate, and the tops of the first and second arched connectors are fixedly connected to the upper cover plate.

[0022] Preferably, the vertical cross-section of the first arched connector and the second arched connector is an isosceles trapezoidal zigzag plate structure.

[0023] Preferably, stiffening ribs are fixed at the upper and lower right angles on the inner left side of the outer sleeve, and the stiffening ribs are triangular plate structures.

[0024] Preferably, the elastic reset element is an SMA spring or a disc spring.

[0025] Advantages of this invention: When subjected to tension or compression, the left and right viscoelastic damping blocks provide shearing capacity to dissipate energy, while the middle elastic reset member compresses and stores elastic potential energy. When the force ends, the stored elastic potential energy provides self-resetting capacity, allowing the support to return to its original state.

[0026] The top and bottom rows of SMA stranded wires are always under tension, utilizing the superelasticity of the SMA stranded wires to dissipate energy. When the force is removed, the self-resetting property of the SMA stranded wires allows it to return to its original state.

[0027] During assembly, the tension of the SMA strands can be adjusted by the tension adjustment component, so that the prestress of the buckling restraint brace's self-resetting capability can be adjusted in advance during installation, providing the brace with a more suitable self-resetting capability.

[0028] Meanwhile, an outer sleeve is installed on the outside of the self-resetting support structure to protect the self-resetting support structure installed inside. Moreover, the outer sleeve adopts a U-shaped plate structure, which makes it easier to provide force application space during installation and removal of the device, facilitating assembly and disassembly.

[0029] This invention features widely available materials, simple construction, clear force transmission, and low maintenance costs. It also possesses excellent self-resetting and energy dissipation characteristics, enabling low or no damage to structural components after an earthquake. This will help promote the development of recoverable functional structures and the realization of resilient buildings, and has broad application prospects.

[0030] This prefabricated viscoelastic adjustable self-resetting brace can be mass-produced in the factory or assembled on-site, offering excellent applicability. It can achieve low or no damage to structural components after an earthquake, and can also dissipate energy under seismic loads with varying waterproofing levels. It boasts low maintenance costs and high cost-effectiveness. It contributes to the development of recoverable functional structures and the achievement of resilient building goals, and has broad application prospects. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a structural schematic diagram from the main view angle of Example 1;

[0033] Figure 2 for Figure 1 A three-dimensional structural diagram;

[0034] Figure 3 This is a schematic diagram (I) of the three-dimensional structure after removing the outer sleeve in Example 1;

[0035] Figure 4 This is a schematic diagram (II) of the isometric solid structure after removing the outer sleeve in Example 1;

[0036] Figure 5 This is a force analysis diagram of the adjustable self-resetting support in Example 1 from right to left.

[0037] Figure 6This is a force analysis diagram of the adjustable self-resetting support in Example 1 under no external force.

[0038] Figure 7 This is a force analysis diagram of the adjustable self-resetting support in Example 1 from left to right.

[0039] In the diagram, 1. Upper cover plate, 2. Lower cover plate, 3. Elastic reset component, 4. Sliding baffle, 5. Limiting strip, 6. First arched connector, 7. Viscoelastic damping block, 8. Second arched connector, 9. Tension plate, 10. Sliding cover plate, 11. First restraint, 12. Second restraint, 13. SMA stranded wire, 14. SMA adjusting bolt, 15. Outer sleeve, 16. Stiffening rib, 17. First movable cavity, 18. Limiting baffle, 19. Second movable cavity. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] Example 1: An assembled viscoelastic adjustable self-resetting support, such as... Figure 1-4 As shown, it includes an upper cover plate 1 and a lower cover plate 2 extending in the left and right direction. The upper cover plate 1 is located directly above the lower cover plate 2. An elastic reset member 3 is provided between the upper cover plate 1 and the lower cover plate 2. Both ends of the elastic reset member 3 are abutted against vertically arranged sliding baffles 4. The sliding baffles 4 are slidably disposed between the upper cover plate 1 and the lower cover plate 2.

[0042] In this embodiment, the elastic reset member 3 can be an SMA spring or a disc spring. In this embodiment, the elastic reset member 3 uses an SMA spring.

[0043] Two limiting strips 5 are fixedly provided on opposite sides of the upper cover plate 1 and the lower cover plate 2, with left and right intervals. The limiting strips 5 on the upper cover plate 1 and the lower cover plate 2 are vertically corresponding and have a gap between them. The limiting strips 5 extend in the front-back direction and are located on the side of the sliding baffle 4 away from the elastic reset member 3. The limiting strips 5 on the left and right sides are used to limit the left and right sliding distance of the two sliding baffles 4.

[0044] The sliding baffle 4 is an inverted T-shaped block structure. The protruding part of the sliding baffle 4 is movably inserted into the gap between the upper and lower limit strips 5 to enhance the structural strength of the corresponding upper and lower limit strips 5.

[0045] In order to further improve the resistance of the tension plate 9 to deformation in the front-back direction by means of the sliding baffle 4, the limiting strip 5 is provided with a slot on the side facing the sliding baffle 4, and the side of the sliding baffle 4 away from the elastic reset member 3 is locked in the slot on the limiting strip 5.

[0046] Both the upper cover plate 1 and the lower cover plate 2 are abutted against by vertically arranged sliding cover plates 10. Both the sliding baffle 4 and the sliding cover plate 10 are provided with insertion holes that correspond to the gaps between the upper and lower limit strips 5 and are open to the left and right. Both the insertion holes on the sliding baffle 4 and the sliding cover plate 10 and the gaps between the upper and lower limit strips 5 are provided with tension plates 9 extending in the left and right direction. The elastic reset member 3 is sleeved on the tension plate 9.

[0047] A viscoelastic damping block 7 extending in the left-right direction is fixedly sleeved on the tension plate 9 between the limiting strip 5 and the sliding cover plate 10. The viscoelastic damping block 7 is mainly made of viscoelastic material, and the top of the viscoelastic damping block 7 is fixedly connected to the bottom of the upper cover plate 1, and the bottom of the viscoelastic damping block 7 is fixedly connected to the top of the lower cover plate 2.

[0048] A first arched connector 6 is provided between the viscoelastic damping block 7 and the limiting strip 5, and a second arched connector 8 is provided between the viscoelastic damping block 7 and the sliding cover plate 10. The first arched connector 6 and the second arched connector 8 are sleeved on the outside of the tension plate 9. The vertical cross-section of the first arched connector 6 and the second arched connector 8 is an isosceles trapezoidal Z-shaped plate structure that is narrow at the top and wide at the bottom. The isosceles trapezoidal Z-shaped plate structure distributes the force more evenly when subjected to force.

[0049] The lower ends of the first arched connector 6 and the second arched connector 8 are fixedly connected to the lower cover plate 2 by high-strength bolts, and the tops of the first arched connector 6 and the second arched connector 8 are fixedly connected to the upper cover plate 1 by high-strength bolts.

[0050] The upper and lower ends of the sliding cover plate 10 extend to the upper and lower outer sides of the upper cover plate 1 and the lower cover plate 2. The upper cover plate 1, the lower cover plate 2 and the outer side of the sliding cover plate 10 are all fitted with an outer sleeve 15, which is a U-shaped plate structure with an opening at the right end.

[0051] The outer sleeve 15 adopts a U-shaped plate structure, which makes it easier to provide force application space during installation and dismantling of the device, and facilitates assembly and disassembly. At the same time, the outer sleeve 15 also provides protection for the self-resetting support structure installed inside it.

[0052] The inner sides of the top and bottom plates of the outer sleeve 15 are each fixed with two left and right spaced limit baffles 18. The limit baffles 18 are L-shaped plate structures. The sliding cover plate 10 moves against the outer sides of the two left and right limit baffles 18. The upper and lower limit baffles 18 are fixedly connected to the upper cover plate 1 and the lower cover plate 2 respectively by high-strength bolts.

[0053] Two first constraint devices 11 are fixedly sleeved on the left side of the tension plate 9, with the sliding cover plate 10 on the left side located between the two first constraint devices 11. The left-right distance between the two first constraint devices 11 is greater than the thickness of the sliding cover plate 10. The first constraint devices 11 are used to prevent the sliding cover plate 10 from coming off the tension plate 9.

[0054] Two second constraint devices 12 are fixedly sleeved on the right side of the tension plate 9, with left and right spaced apart. The sliding cover plate 10 on the right side is located between the two second constraint devices 12, and the left and right distance between the two second constraint devices 12 is equal to the left and right distance between the two first constraint devices 11. The two sliding cover plates 10 simultaneously abut against the outside of the left and right adjacent first constraint devices 11 and second constraint devices 12.

[0055] In this embodiment, both the first restraint 11 and the second restraint 12 are U-shaped frame plate structures. Both the first restraint 11 and the second restraint 12 are fixedly connected to the tension plate 9 by vertically inserted high-strength bolts.

[0056] The limiting baffle 18 has through holes on both sides, and SMA stranded wires 13 extending in the left and right directions are threaded through the holes on the limiting baffles 18 on both sides. Figure 1-4 The upper and lower sides of the diagram have three SMA stranded wires 13 on each side.

[0057] Tension adjustment components are fixedly connected to both ends of the SMA stranded wire 13. The tension adjustment components are detachably fixed on the sliding cover plate 10 and are used to adjust the tension of the SMA stranded wire 13.

[0058] The tension adjustment component includes SMA adjusting bolts 14 fixedly installed at both ends of the SMA strand 13. The SMA adjusting bolt 14 includes an SMA adjusting screw and an adjusting nut threaded onto the SMA adjusting screw. One end of the SMA adjusting screw is fixedly connected to the end of the SMA strand 13.

[0059] The sliding cover plate 10 has screw holes corresponding to the left and right sides of the SMA adjusting screw. The SMA adjusting screw is movably inserted into the screw holes, and the adjusting nut is located on the side of the sliding cover plate 10 away from the upper cover plate 1 and the lower cover plate 2.

[0060] The SMA adjusting bolts 14 on the left and right sides work together to adjust the tension of the SMA strands so that the self-resetting ability of the buckling restraint support device can be adjusted in advance during installation.

[0061] There is a first movable cavity 17 between the left end plate of the outer sleeve 15 and the left sliding cover plate 10, allowing the left sliding cover plate 10 to slide to the left. There is a second movable cavity 19 between the right end of the outer sleeve 15 and the right sliding cover plate 10, allowing the right sliding cover plate 10 to slide to the right. The right end of the stretching plate 9 extends beyond the upper cover plate 1 and the lower cover plate 2.

[0062] The upper and lower right angles on the inner left side of the outer sleeve 15 are both fixed with stiffening ribs 16, which are triangular plate structures.

[0063] Working principle: under tension (e.g.) Figure 7 ) or under pressure (such as Figure 5 When the force is applied, the left and right viscoelastic damping blocks 7 provide shear force to dissipate energy, while the middle elastic restoring element 3 compresses and stores elastic potential energy. When the force is applied, the stored elastic potential energy provides self-restoring capability, allowing the support to return to its original state (e.g., ...). Figure 6 (As shown).

[0064] The upper and lower rows of SMA stranded wires are always under tension, utilizing the superelasticity of the SMA stranded wires to dissipate energy. When the stress ends, the self-resetting property of the SMA stranded wires allows them to return to their original state. By adjusting the prestress of the SMA stranded wires through the tension adjustment components at both ends of the SMA stranded wires, a more suitable self-resetting capability can be provided for the support.

[0065] The assembled viscoelastic adjustable self-resetting support designed in this invention realizes the combination of shear energy dissipation and self-resetting function of viscoelastic material with assembled function.

[0066] Viscoelastic materials can effectively avoid excessive plastic deformation and damage to the supporting structure by dissipating energy during shearing. While dissipating energy during shearing, viscoelastic materials are not easily damaged themselves. Generally, the service life of viscoelastic materials is 30 years or more. This can reduce the loss of materials by replacing them, keep costs to a minimum, and significantly reduce maintenance time and costs.

[0067] Shape memory alloy (SMA) materials can provide good self-resetting ability and energy dissipation ability, and there is no creep effect within the elastic range. There is basically no loss of self-resetting ability during the service life. Good fatigue resistance and corrosion resistance mean that they generally do not need to be replaced after an earthquake.

[0068] After the self-resetting brace reaches its design limit displacement under extremely rare earthquake conditions, the internal tension plate begins to function as a metal buckling mechanism to minimize damage to structural components. After the earthquake, the brace as a whole enables the rapid recovery of structural function.

[0069] This invention features widely available materials, simple construction, clear force transmission, and low maintenance costs. It also possesses excellent self-resetting and energy dissipation characteristics, enabling low or no damage to structural components after an earthquake. This will help promote the development of recoverable functional structures and the realization of resilient buildings, and has broad application prospects.

[0070] This prefabricated viscoelastic adjustable self-resetting brace can be mass-produced in the factory or assembled on-site, offering excellent applicability. It can achieve low or no damage to structural components after an earthquake, and can also dissipate energy under seismic loads with varying waterproofing levels. It boasts low maintenance costs and high cost-effectiveness. It contributes to the development of recoverable functional structures and the achievement of resilient building goals, and has broad application prospects.

[0071] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims and not by the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A fabricated viscoelastic adjustable self-centering brace, characterized by: It includes an upper cover plate (1) and a lower cover plate (2) extending in the left and right direction. The upper cover plate (1) is located directly above the lower cover plate (2). An elastic reset member (3) is provided between the upper cover plate (1) and the lower cover plate (2). Both ends of the elastic reset member (3) are abutted against vertically arranged sliding baffles (4). The sliding baffles (4) slide left and right between the upper cover plate (1) and the lower cover plate (2). Two limiting strips (5) are fixedly provided on opposite sides of the upper cover plate (1) and the lower cover plate (2). The limiting strips (5) on the upper cover plate (1) and the lower cover plate (2) are vertically aligned and have a gap between them. The limiting strips (5) extend in the front-back direction and are located on the side of the sliding baffle (4) away from the elastic reset member (3). The limiting strips (5) on the left and right sides are used to limit the left and right sliding distance of the two sliding baffles (4). The upper cover plate (1) and the lower cover plate (2) are both abutted by vertically arranged sliding cover plates (10). The sliding baffle (4) and the sliding cover plate (10) are both provided with insertion holes that correspond to the gap between the upper and lower limit strips (5) and are open to the left and right. The insertion holes on the sliding baffle (4) and the sliding cover plate (10) and the gap between the upper and lower limit strips (5) are both provided with tension plates (9) extending in the left and right direction. The elastic reset member (3) is sleeved on the tension plate (9). The upper and lower ends of the sliding cover (10) extend to the upper and lower outer sides of the upper cover (1) and the lower cover (2). The upper cover (1), the lower cover (2) and the sliding cover (10) are all fitted with an outer sleeve (15). The outer sleeve (15) is a U-shaped plate structure with an opening at the right end. The top and bottom plates of the outer sleeve (15) are fixedly provided with two left and right spaced limit baffles (18), and the sliding cover plate (10) moves against the outside of the two left and right limit baffles (18). The upper and lower limit baffles (18) are fixedly connected to the upper cover plate (1) and the lower cover plate (2) respectively. Two first constraint devices (11) are fixedly sleeved on the left side of the tension plate (9) with left and right spacing. The sliding cover plate (10) on the left side is located between the two first constraint devices (11), and the left and right spacing between the two first constraint devices (11) is greater than the thickness of the sliding cover plate (10). The first constraint devices (11) are used to prevent the sliding cover plate (10) from falling off the tension plate (9). Two second constraint devices (12) are fixedly sleeved on the right side of the tension plate (9) and spaced apart on the left and right. The sliding cover plate (10) on the right side is located between the two second constraint devices (12), and the left and right distance between the two second constraint devices (12) is equal to the left and right distance between the two first constraint devices (11). The two sliding cover plates (10) simultaneously abut against the outside of the adjacent first constraint devices (11) and second constraint devices (12). The limiting baffle (18) has a wire hole that is open to the left and right. The wire holes on the limiting baffle (18) on the left and right sides are filled with SMA stranded wire (13) extending in the left and right direction. Both ends of the SMA stranded wire (13) are provided with tension adjustment components. The tension adjustment components are detachably fixed on the sliding cover plate (10). The tension adjustment components are used to adjust the tension of the SMA stranded wire (13). There is a first movable cavity (17) between the left end plate of the outer sleeve (15) and the left sliding cover plate (10) for the left sliding cover plate (10) to slide to the left, and the right end of the stretching plate (9) extends beyond the upper cover plate (1) and the lower cover plate (2). A viscoelastic damping block (7) extending in the left and right direction is fixedly sleeved on the tension plate (9) between the limiting strip (5) and the sliding cover plate (10). The viscoelastic damping block (7) is made of viscoelastic material, and the top of the viscoelastic damping block (7) is fixedly connected to the bottom of the upper cover plate (1), and the bottom of the viscoelastic damping block (7) is fixedly connected to the top of the lower cover plate (2).

2. The assembled viscoelastic adjustable self-resetting support as described in claim 1, characterized in that: The tension adjustment component includes SMA adjustment bolts (14) fixedly installed at both ends of the SMA strand (13). The SMA adjustment bolt (14) includes an SMA adjustment screw and an adjustment nut threaded on the SMA adjustment screw. One end of the SMA adjustment screw is fixedly connected to the end of the SMA strand (13). The sliding cover (10) has screw holes corresponding to the left and right sides of the SMA adjusting screw. The SMA adjusting screw is movably inserted into the screw holes, and the adjusting nut is located on the side of the sliding cover (10) away from the upper cover (1) and the lower cover (2). The SMA adjusting bolts (14) on the left and right sides work together to adjust the tension of the SMA strand.

3. The assembled viscoelastic adjustable self-resetting support as described in claim 1, characterized in that: The limiting strip (5) has a slot on the side facing the sliding baffle (4), and the side of the sliding baffle (4) away from the elastic reset member (3) is locked in the slot on the limiting strip (5).

4. A prefabricated viscoelastic adjustable self-resetting support as described in claim 1 or 2, characterized in that: The sliding baffle (4) is an inverted T-shaped block structure, and the protruding part of the sliding baffle (4) is movably inserted into the gap between the upper and lower limit strips (5).

5. The assembled viscoelastic adjustable self-resetting support as described in claim 1, characterized in that: There is a second movable cavity (19) between the right end of the outer sleeve (15) and the right sliding cover (10) for the right sliding cover (10) to slide to the right.

6. The assembled viscoelastic adjustable self-resetting support as described in claim 1, characterized in that: A first arched connector (6) is provided between the viscoelastic damping block (7) and the limiting strip (5), and a second arched connector (8) is provided between the viscoelastic damping block (7) and the sliding cover plate (10). The first arched connector (6) and the second arched connector (8) are sleeved on the outside of the tension plate (9). The lower ends of the first arched connector (6) and the second arched connector (8) are fixedly connected to the lower cover plate (2), and the tops of the first arched connector (6) and the second arched connector (8) are fixedly connected to the upper cover plate (1).

7. The assembled viscoelastic adjustable self-resetting support as described in claim 6, characterized in that: The vertical cross-section of the first arched connector (6) and the second arched connector (8) is an isosceles trapezoidal zigzag plate structure.

8. The assembled viscoelastic adjustable self-resetting support as described in claim 1, characterized in that: The upper and lower right angles of the left inner side of the outer sleeve (15) are fixed with stiffening ribs (16), which are triangular plate structures.

9. The assembled viscoelastic adjustable self-resetting support as described in claim 1, characterized in that: The elastic reset element (3) is an SMA spring or a disc spring.

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