4d printing double-path seismic support with gap triggering and recovery function

Abstract

The application relates to the technical field of anti-seismic supports, and discloses a 4D printing double-path anti-seismic support with gap triggering and restoring functions, which comprises a top plate, a bottom plate, a peripheral honeycomb buffer frame and a central honeycomb core. The peripheral honeycomb buffer frame is assembled by A-frame units and B-frame units and is made of PA-CF material and is used for providing bearing, hierarchical buffering and lateral restraint. The central honeycomb core is arranged in the central mounting area of the bottom plate and is made of PETG material. The honeycomb wall of the central honeycomb core is embedded with left-right symmetrical first continuous carbon fiber conductive loops and second continuous carbon fiber conductive loops, and the loops are connected with an external power source interface through the bottom. A preset gap is arranged between the central honeycomb core and the top plate, so that the peripheral honeycomb buffer frame is preferentially stressed under small displacement conditions. The application takes into account stable bearing capacity, hierarchical buffering capacity, large displacement energy absorption capacity and post-earthquake rapid recovery capacity, and is suitable for the anti-seismic protection of the base of precision equipment.

Description

Technical Field

[0001] This invention relates to the field of seismic bearing technology, specifically a 4D-printed dual-path seismic bearing with gap triggering and recovery functions. Background Technology

[0002] Among 4D printed polymer materials, PETG exhibits good formability, toughness, and deformation recovery capabilities, making it suitable for fabricating lightweight porous energy-absorbing structures such as honeycomb and lattice structures. Especially in compression energy-absorbing components, it can dissipate energy through buckling, bending, and compression of unit walls, and demonstrates a certain shape recovery capability under thermal stimulation. To further improve the active recovery efficiency of polymer honeycomb structures, a conductive network can be constructed within the structure. Continuous carbon fibers possess high specific strength, specific modulus, and good electrical and thermal conductivity. When embedded in the polymer honeycomb structure, they can rapidly heat up under applied current through the Joule heating effect, thereby triggering the shape recovery of the polymer matrix. Therefore, it can serve as a reinforcing phase to improve the structural mechanical properties and as a conductive heating pathway to achieve electrothermal driven recovery. On the other hand, when using 4D printing technology to fabricate seismic bearings, the outer bearing and support components must not only have a certain buffering capacity but also high stiffness, dimensional stability, and load-bearing capacity. PA-CF composite materials possess good mechanical properties, formability, and lightweight characteristics, making them suitable for manufacturing load-bearing components such as the outer frame, top plate, and bottom plate of supports, thus forming a division of materials and functions with the central recoverable honeycomb structure.

[0003] Currently, most existing recoverable honeycomb or lattice structures focus on the energy absorption and recovery functions of individual components. For applications such as precision equipment bases that require both stable load-bearing, buffering, energy absorption, and post-earthquake recovery, there is still a lack of an overall support scheme that can organically combine the outer support buffer structure with the central active recovery energy absorption structure. Therefore, it is necessary to propose a dual-path seismic support structure that combines load-bearing support, buffering, energy absorption, and post-earthquake recovery functions to improve the comprehensive protection capabilities of precision equipment bases under vibration, impact, and seismic conditions. Summary of the Invention

[0004] Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a 4D-printed dual-path seismic support with gap triggering and recovery functions, which solves the problem that existing seismic support structures for precision equipment bases cannot simultaneously achieve stable bearing and graded buffering under small displacement conditions, compression energy absorption under large displacement conditions, and post-earthquake in-situ recovery and reuse capabilities.

[0006] Technical solution To achieve the above objectives, the present invention provides the following technical solution: a 4D-printed dual-path seismic bearing with gap triggering and recovery functions, comprising a top plate, a bottom plate, an outer honeycomb buffer frame disposed between the top plate and the bottom plate, and a central honeycomb core located in the central region of the outer honeycomb buffer frame, and also including an external auxiliary heater; The outer cellular buffer frame is formed by splicing two A-frame units and two B-frame units. The outer cellular buffer frame undertakes the main support and buffer, forming the outer seismic path of the dual-path seismic support. The base plate has a limiting mounting cavity in the center that is adapted to the central honeycomb core, which is used to position the central honeycomb core; The central honeycomb core has a columnar honeycomb structure, and a continuous carbon fiber conductive circuit is embedded in the honeycomb wall of the central honeycomb core, forming an energized Joule heat recovery channel. A preset gap g is provided between the central honeycomb core and the top plate. The preset gap g enables the shock absorber to have a gap triggering function. The central honeycomb core participates in support and buffering according to the magnitude of the displacement condition, forming the internal seismic path of the dual-path seismic support.

[0007] As a further description of the above technical solution, the continuous carbon fiber conductive circuit is composed of a first continuous carbon fiber conductive circuit and a second continuous carbon fiber conductive circuit. The first continuous carbon fiber conductive circuit and the second continuous carbon fiber conductive circuit are arranged in reverse along the key vertical deformation path of the central honeycomb core and are led out from the bottom to connect to the external power interface. The external power interface is located below the bottom plate or on the side of the bottom plate and is connected to the first continuous carbon fiber conductive circuit and the second continuous carbon fiber conductive circuit through insulated leads. During the post-earthquake recovery process, the dual-path seismic bearing utilizes an external auxiliary heater to externally heat the central honeycomb core. The dual-channel recovery structure of the central honeycomb core consists of an energized Joule thermal recovery channel formed by a continuous carbon fiber conductive circuit and an external heating recovery channel formed by the external auxiliary heater.

[0008] As a further description of the above technical solution, the top plate, bottom plate and the outer honeycomb buffer frame are all made of PA-CF material. The A frame unit and the B frame unit are spliced ​​together by a plug-in limiting connection structure. The plug-in limiting connection structure includes a protruding part and a mating concave part to improve the assembly stability and lateral limiting capability of the outer honeycomb buffer frame.

[0009] As a further description of the above technical solution, the preset gap g is 0.5mm to 5mm, or 2% to 10% of the height of the central honeycomb core. Under small displacement conditions, the preset gap g is not closed, the top plate does not contact the upper end of the central honeycomb core, and the outer honeycomb buffer frame undertakes the main support and buffering functions. Under large displacement conditions, the preset gap g is closed, the upper end of the central honeycomb core contacts the top plate and participates in the force to undergo compressive energy absorption deformation.

[0010] As a further description of the above technical solution, the first continuous carbon fiber conductive circuit and the second continuous carbon fiber conductive circuit are arranged symmetrically on the left and right, and are each an independent closed circuit.

[0011] As a further description of the above technical solution, the first continuous carbon fiber conductive circuit and the second continuous carbon fiber conductive circuit are arranged in a vertical serpentine pattern along the honeycomb wall of the main pressure area in the center of the central honeycomb core.

[0012] As a further description of the above technical solution, the central honeycomb core is made of PETG material, and its external structure is either a square column honeycomb structure or a rectangular column honeycomb structure.

[0013] As a further description of the above technical solution, the first continuous carbon fiber conductive circuit and the second continuous carbon fiber conductive circuit can be energized separately, simultaneously, or in stages according to a preset sequence.

[0014] The post-earthquake recovery method for dual-path seismic bearings provided by this invention includes the following steps: S1. After the earthquake, impact, or vibration conditions have ended, detect the compression deformation state of the central honeycomb core. S2. Based on the deformation area of ​​the central honeycomb core, select to connect the first continuous carbon fiber conductive circuit, the second continuous carbon fiber conductive circuit, or simultaneously connect the first continuous carbon fiber conductive circuit and the second continuous carbon fiber conductive circuit. S3. The central honeycomb core is internally heated by the Joule heating effect of the continuous carbon fiber conductive circuit, so that the central honeycomb core is heated to the shape recovery trigger temperature range. S4. During the power-on recovery process, the external auxiliary heater is activated to provide external auxiliary heating to the central honeycomb core, so as to reduce the temperature difference between the inside and outside of the structure and improve the recovery uniformity. S5. Once the central honeycomb core has returned to its predetermined shape, power and auxiliary heating are stopped, and the core is cooled and set, restoring the dual-path seismic support to a usable state.

[0015] As a further description of the above technical solution, the continuous carbon fiber conductive circuit is powered by a 12V to 48V DC power supply, with a current of 1A to 5A and a power-on time of 30s to 180s. The external auxiliary heating component maintains the central honeycomb core within the recovery temperature range of 60℃ to 90℃ for 1min to 5min.

[0016] Beneficial effects Compared with existing technologies, this invention provides a 4D-printed dual-path seismic bearing with gap triggering and recovery functions, which has the following beneficial effects: 1. This invention achieves a gap-triggered dual-path force switching from the outer honeycomb buffer frame to the central honeycomb core by setting a preset gap between the central honeycomb core and the top plate, which can take into account both stable bearing under small displacement conditions and compression energy absorption under large displacement conditions.

[0017] 2. This technical solution sets up a first and a second continuous carbon fiber conductive circuit symmetrically inside the central honeycomb core. This allows the conductive network to not only enhance the local structural strength of the central honeycomb core, but also serve as an independent and controllable Joule heat recovery channel. Combined with the external heating recovery channel formed by the external auxiliary heater, it constitutes a dual-channel recovery structure of the central honeycomb core, which is beneficial to improving the recovery speed and temperature uniformity. In addition, the first and second continuous carbon fiber conductive circuits can be energized separately, simultaneously, or in stages according to a preset sequence, thereby adapting to different deformation areas and different post-earthquake recovery requirements.

[0018] 3. The support provided by this technical solution uses PA-CF material for its top plate, bottom plate and outer honeycomb buffer frame, and PETG material for the central honeycomb core. This facilitates the division of material functions between the high-rigidity load-bearing support on the periphery and the restorable energy-absorbing core in the center. The overall structure of the support is suitable for modular design and additive manufacturing, and it is convenient to adjust the size and parameters according to the quality level and protection requirements of different precision equipment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the 4D-printed dual-path seismic bearing with gap triggering and recovery functions proposed in this invention; Figure 2 This is a schematic diagram of the top plate structure in this invention (the top is a three-dimensional schematic diagram, and the bottom is a two-dimensional schematic diagram). Figure 3 This is a schematic diagram of the base plate structure in this invention (the top is a three-dimensional schematic diagram, and the bottom is a two-dimensional schematic diagram). Figure 4 This is a structural schematic diagram of the A-frame unit in this invention (the top is a three-dimensional schematic diagram, and the bottom is a planar schematic diagram). Figure 5This is a structural schematic diagram of the B-frame unit in this invention (the top is a three-dimensional schematic diagram, and the bottom is a planar schematic diagram). Figure 6 This is a schematic diagram of the central cellular core in this invention; Figure 7 This is a schematic diagram of the assembly process of the dual-path seismic bearing of the present invention; Figure 8 This is a schematic diagram of the central cellular dual-channel recovery process of the present invention.

[0020] In the figure: 1. Top plate; 2. Peripheral honeycomb buffer frame; 3. Recessed joint; 4. Protruding joint; 5. Bottom plate; 6. Limiting mounting cavity; 7. Frame A unit; 8. Frame B unit; 9. First continuous carbon fiber conductive circuit; 10. Second continuous carbon fiber conductive circuit; 11. Central honeycomb core; 12. External auxiliary heater; 13. DC power supply. Detailed Implementation

[0021] 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.

[0022] Example: The central honeycomb core in this invention can undergo a controllable recovery from a compressed deformation state to its initial configuration under external electrical and thermal stimulation. This is a 4D printed structure application with stimulus response characteristics, which enables the dual-path seismic support to have gap triggering and dual-channel recovery functions. See attached document Figures 1-8 It includes a top plate 1, a bottom plate 5, an outer honeycomb buffer frame 2 disposed between the top plate 1 and the bottom plate 5, and a central honeycomb core 11 located in the central area of ​​the outer honeycomb buffer frame 2, and also includes an external auxiliary heater 12. The top plate 1 is located on the upper part of the mounting support and is used to support precision equipment or connect to the equipment mounting base; the bottom plate 5 is located on the lower part of the mounting support and is used to connect to the mounting platform, ground foundation or equipment support platform; The outer honeycomb buffer frame 2 is formed by splicing two A-frame units 7 and two B-frame units 8. The outer honeycomb buffer frame 2 undertakes the main support and buffer, forming the outer seismic path of the dual-path seismic support. The top plate 1, bottom plate 5 and outer honeycomb buffer frame 2 are all made of PA-CF material to ensure that the outer bearing structure of the device has high stiffness, dimensional stability and bearing capacity. The A-frame unit 7 and B-frame unit 8 are spliced ​​together by a plug-in limiting connection structure. The plug-in limiting connection structure includes a protruding part 4 and a concave part 3 that cooperates with it to improve the assembly stability and lateral limiting capacity of the outer honeycomb buffer frame 2. The outer honeycomb buffer frame 2 is formed by assembling four rectangular honeycomb units, namely two A-frame units 7 and B-frame units 8, and is set around the outer periphery of the central area of ​​the bottom plate 5 to provide outer bearing support, graded buffer and lateral restraint. The central honeycomb core 11 is made of PETG material and is set in the central installation area of ​​the bottom plate 5 and located below the top plate 1. It is used to undertake the main compression energy absorption function under large displacement conditions. The base plate 5 has a limiting installation cavity 6 in the center that is adapted to the central honeycomb core 11. It is used to position the central honeycomb core 11 and to provide an installation reference for the pressure deformation and post-earthquake recovery of the central honeycomb core 11.

[0023] The central honeycomb core 11 can be designed as a columnar honeycomb structure, preferably a square columnar honeycomb structure or a rectangular columnar honeycomb structure, so as to match the central area of ​​the outer honeycomb buffer frame 2 and to undergo controllable compression deformation vertically under pressure. A continuous carbon fiber conductive circuit is embedded in the honeycomb wall of the central honeycomb core 11. The continuous carbon fiber conductive circuit forms an electrically conductive Joule heat recovery channel. The continuous carbon fiber conductive circuit consists of a first continuous carbon fiber conductive circuit 9 and a second continuous carbon fiber conductive circuit 10. The first continuous carbon fiber conductive circuit 9 and the second continuous carbon fiber conductive circuit 10 are arranged in a folding pattern along the key vertical deformation path of the central honeycomb core 11, specifically as follows: 1. The first continuous carbon fiber conductive circuit 9 and the second continuous carbon fiber conductive circuit 10 are arranged symmetrically on the left and right sides, and are independent closed circuits respectively. 2. The first continuous carbon fiber conductive circuit 9 and the second continuous carbon fiber conductive circuit 10 are arranged in a vertical serpentine pattern along the honeycomb wall of the main pressure area in the middle of the central honeycomb core 11.

[0024] The continuous carbon fiber conductive network is distributed along the honeycomb wall, ribs or key vertical deformation path of the central honeycomb core 11, preferably in a vertical folding arrangement.

[0025] The wires of the continuous carbon fiber conductive circuit are led out from the bottom and connected to the external power interface. The external power interface is located below the bottom plate 5 or on the side of the bottom plate 5, and is connected to the first continuous carbon fiber conductive circuit 9 and the second continuous carbon fiber conductive circuit 10 through insulated leads, so as to implement zoned power supply and electrothermal restoration of the central honeycomb core 11 after the earthquake. During the post-earthquake recovery process, the dual-path seismic bearing utilizes an external auxiliary heater 12 to externally heat the central honeycomb core 11. The dual-channel recovery structure of the central honeycomb core 11 consists of an energized Joule heating recovery channel formed by a continuous carbon fiber conductive circuit and an external heating recovery channel formed by the external auxiliary heater 12. After the earthquake, by connecting the first continuous carbon fiber conductive circuit 9 and / or the second continuous carbon fiber conductive circuit 10, the first continuous carbon fiber conductive circuit 9 and the second continuous carbon fiber conductive circuit 10 can be energized separately, simultaneously, or in stages according to a preset sequence, and in conjunction with activating the external auxiliary heater 12, the central honeycomb core 11 is restored to its initial configuration.

[0026] A preset gap g is set between the central honeycomb core 11 and the top plate 1. The preset gap g enables the shock absorber to have a gap triggering function, so that the central honeycomb core 11 participates in support and buffering according to the magnitude of the displacement condition, forming the internal seismic path of the dual-path seismic support.

[0027] Specifically: The preset gap g is 0.5mm to 5mm, or 2% to 10% of the height of the central honeycomb core 11. Under small displacement conditions, the preset gap g is not closed, the top plate 1 does not contact the upper end of the central honeycomb core 11, and the outer honeycomb buffer frame 2 undertakes the main support and buffering functions. Under large displacement conditions, the preset gap g is closed, the upper end of the central honeycomb core 11 contacts the top plate 1 and participates in the force to undergo compressive energy absorption deformation. The external structure of the central honeycomb core 11 can be any one of a square column honeycomb structure or a rectangular column honeycomb structure.

[0028] The post-earthquake recovery method for dual-path seismic bearings provided by this invention includes the following steps: S1. After the earthquake, impact or vibration conditions have ended, the bearing shall be inspected for appearance or condition, mainly to check the compression deformation state of the central honeycomb core 11. S2. Based on the deformation area or deformation state of the central honeycomb core 11, select to connect the first continuous carbon fiber conductive circuit 9, the second continuous carbon fiber conductive circuit 10, or simultaneously connect the first continuous carbon fiber conductive circuit 9 and the second continuous carbon fiber conductive circuit 10. S3. The central honeycomb core 11 is internally heated by the Joule heating effect of the continuous carbon fiber conductive circuit, so that the central honeycomb core 11 is heated to the shape recovery trigger temperature range. The continuous carbon fiber conductive circuit is powered by a 12V~48V DC power supply 13 with a current of 1A~5A and a power-on time of 30s~180s. S4. During the power-on recovery process, the external auxiliary heater 12 is activated to provide external auxiliary heating to the central honeycomb core 11, so that the central honeycomb core 11 is heated to the temperature required for its shape recovery, thereby reducing the temperature difference between the inside and outside of the structure and improving the recovery uniformity, thereby improving the temperature uniformity and recovery efficiency during the recovery process, and quickly restoring to the initial configuration. The external auxiliary heating component (external auxiliary heater 12) maintains the central honeycomb core 11 in the recovery temperature range of 60℃ to 90℃ for 1 min to 5 min. S5. After the central honeycomb core 11 returns to the predetermined shape, the power supply and auxiliary heating are stopped, and the core is cooled and shaped, so that the dual-path seismic support is restored to a reusable state.

[0029] The dual-path seismic bearing of the present invention includes two force paths during operation; The first path is the outer honeycomb buffer path. Under normal load, small displacement vibration and general buffer conditions, the preset gap g between the central honeycomb core 11 and the top plate 1 is not closed. The outer honeycomb buffer frame 2 first undertakes the main support and graded buffering functions to maintain the overall structural stability.

[0030] The second path is the central cellular energy absorption and recovery path. When the external impact, vibration or earthquake continues to increase and the preset gap g is closed, the central cellular core 11 begins to participate in the force and undergoes vertical compression deformation, dissipating the input energy through the buckling, compression and deformation of the cellular unit. After the working condition ends, by energizing the first continuous carbon fiber conductive circuit 9 and the second continuous carbon fiber conductive circuit 10, the continuous carbon fiber conductive network generates Joule heat to internally heat the central honeycomb core 11. It can also be further combined with 12 to implement external heating, thus forming a dual-channel recovery method that combines internal power-on recovery and external auxiliary heating recovery, so that the central honeycomb core 11 can be restored to its original shape and reused after the earthquake.

[0031] It should be noted that the term "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A 4D-printed dual-path seismic bearing with gap triggering and recovery functions, characterized in that, It includes a top plate (1), a bottom plate (5), an outer honeycomb buffer frame (2) disposed between the top plate (1) and the bottom plate (5), and a central honeycomb core (11) located in the central area of ​​the outer honeycomb buffer frame (2), and also includes an external auxiliary heater (12). The outer cellular buffer frame (2) is formed by splicing two A-frame units (7) and two B-frame units (8). The outer cellular buffer frame (2) undertakes the main support and buffer, forming the outer seismic path of the dual-path seismic support. The base plate (5) has a limiting installation cavity (6) in the center that is adapted to the central honeycomb core (11) for positioning the central honeycomb core (11); The central honeycomb core (11) is a columnar honeycomb structure. The honeycomb wall of the central honeycomb core (11) is embedded with a continuous carbon fiber conductive circuit, which forms an energized Joule heat recovery channel. A preset gap g is provided between the central honeycomb core (11) and the top plate (1). The preset gap g is used to enable the shock absorber to have a gap triggering function. The central honeycomb core (11) participates in support and buffering according to the size of the displacement condition, forming the internal seismic path of the dual-path seismic support.

2. The 4D-printed dual-path seismic bearing with gap triggering and recovery function according to claim 1, characterized in that, The continuous carbon fiber conductive circuit is composed of a first continuous carbon fiber conductive circuit (9) and a second continuous carbon fiber conductive circuit (10). The first continuous carbon fiber conductive circuit (9) and the second continuous carbon fiber conductive circuit (10) are arranged along the key vertical deformation path of the central honeycomb core (11) and are led out from the bottom to connect to the external power interface. The external power interface is located below the bottom plate (5) or on the side of the bottom plate (5) and is connected to the first continuous carbon fiber conductive circuit (9) and the second continuous carbon fiber conductive circuit (10) through insulated leads. During the post-earthquake recovery process, the dual-path seismic bearing uses an external auxiliary heater (12) to externally heat the central honeycomb core (11). The dual-channel recovery structure of the central honeycomb core (11) consists of an energized Joule heat recovery channel formed by a continuous carbon fiber conductive circuit and an external heating recovery channel formed by the external auxiliary heater (12).

3. The 4D-printed dual-path seismic bearing with gap triggering and recovery function according to claim 1, characterized in that, The top plate (1), bottom plate (5) and outer honeycomb buffer frame (2) are all made of PA-CF material. The A frame unit (7) and the B frame unit (8) are spliced ​​together by a plug-in limiting connection structure. The plug-in limiting connection structure includes a protruding part (4) and a concave part (3) that cooperates with it, so as to improve the assembly stability and lateral limiting capability of the outer honeycomb buffer frame (2).

4. The 4D-printed dual-path seismic bearing with gap triggering and recovery function according to claim 1, characterized in that, The preset gap g is 0.5mm to 5mm, or 2% to 10% of the height of the central honeycomb core (11). Under small displacement conditions, the preset gap g is not closed, the top plate (1) does not contact the upper end of the central honeycomb core (11), and the outer honeycomb buffer frame (2) undertakes the main support and buffering functions. Under large displacement conditions, the preset gap g is closed, the upper end of the central honeycomb core (11) contacts the top plate (1) and participates in the force to undergo compression and energy absorption deformation.

5. The 4D-printed dual-path seismic bearing with gap triggering and recovery function according to claim 2, characterized in that, The first continuous carbon fiber conductive circuit (9) and the second continuous carbon fiber conductive circuit (10) are arranged symmetrically on the left and right, and are independent closed circuits respectively.

6. The 4D-printed dual-path seismic bearing with gap triggering and recovery function according to claim 2, characterized in that, The first continuous carbon fiber conductive circuit (9) and the second continuous carbon fiber conductive circuit (10) are arranged in a vertical serpentine pattern along the honeycomb wall of the main pressure area in the middle of the central honeycomb core (11).

7. The 4D-printed dual-path seismic bearing with gap triggering and recovery function as described in claim 1, characterized in that, The central honeycomb core (11) is made of PETG material, and its shape is either a square column honeycomb structure or a rectangular column honeycomb structure.

8. The 4D-printed dual-path seismic bearing with gap triggering and recovery function according to claim 2, characterized in that, The first continuous carbon fiber conductive circuit (9) and the second continuous carbon fiber conductive circuit (10) can be energized separately, simultaneously, or in stages according to a preset sequence.

9. A post-earthquake recovery method for a 4D-printed dual-path seismic bearing with gap triggering and recovery functions as described in any one of claims 1 to 8, characterized in that, Includes the following steps: S1. After the earthquake, impact or vibration conditions have ended, the compression deformation state of the central honeycomb core (11) is detected; S2. Based on the deformation area of ​​the central honeycomb core (11), select to connect the first continuous carbon fiber conductive circuit (9), the second continuous carbon fiber conductive circuit (10), or simultaneously connect the first continuous carbon fiber conductive circuit (9) and the second continuous carbon fiber conductive circuit (10). S3. The central honeycomb core (11) is internally heated by the Joule heating effect of the continuous carbon fiber conductive circuit, so that the central honeycomb core (11) is heated to the shape recovery trigger temperature range. S4. During the power-on recovery process, the external auxiliary heater (12) is activated to provide external auxiliary heating to the central honeycomb core (11) in order to reduce the temperature difference between the inside and outside of the structure and improve the recovery uniformity. S5. After the central honeycomb core (11) returns to the predetermined shape, stop the power supply and auxiliary heating, and cool and shape it to restore the dual-path seismic support to a reusable state.

10. The post-earthquake recovery method for a 4D-printed dual-path seismic bearing with gap triggering and recovery functions according to claim 9, characterized in that, The continuous carbon fiber conductive circuit is powered by a 12V to 48V DC power supply (13), with a current of 1A to 5A and a power-on time of 30s to 180s. The external auxiliary heating component maintains the central honeycomb core (11) in the recovery temperature range of 60℃ to 90℃ for 1min to 5min.

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