A device and method for monitoring the loss of thermal function of a composite thermal insulation wall under the action of an earthquake

Abstract

This invention relates to a device and method for monitoring the thermal performance loss of composite insulated walls under seismic loading, belonging to the technical field of wall thermal performance loss testing. This invention solves the technical problem that existing quasi-static tests cannot effectively simulate the thermal performance loss of external wall insulation systems during earthquakes. A measuring box is arranged on one side of a self-reaction frame. The measuring box includes a box panel, insulating rubber, rubber suction cups, a vacuum assembly, a sealing device, a scissor brace hydraulic mechanism, corner jacks, a cold light lamp, a dual-light camera, and a first control panel. The self-reaction frame includes a reaction frame body, a static load reaction device, a horizontal actuator, a movable clamping plate, a hydraulic rod, a telescopic device, a lifting mechanism, a sliding device, and a second control panel. The static load reaction device and the horizontal actuator are adjusted to the loading position, and the corresponding load is set through the first control panel. The data acquisition equipment is connected to the first control panel to acquire visible light and infrared light images during the test. This invention is used for wall testing.

Description

Technical Field

[0001] This invention relates to a device and method for monitoring the thermal performance loss of composite insulated walls under seismic loading, belonging to the technical field of wall thermal performance loss testing. Background Technology

[0002] When buildings adopt external wall insulation and energy-saving technology, their overall energy consumption can be significantly reduced. This technology reduces indoor heat loss, prevents external heat from entering, and improves the building's energy efficiency. A more stable internal environment also provides greater comfort for residents and users, and prevents fatigue and damage to structural materials caused by temperature fluctuations, thus extending the building's lifespan.

[0003] Quasi-static loading tests are a common method for studying the stress performance of shear wall components under seismic loading. Traditional quasi-static loading systems mainly consist of reaction walls, reaction frames, and loading devices. Because reaction walls and reaction frames are typically fixed structures and difficult to move, most quasi-static tests can only be conducted in a laboratory. On the one hand, large specimens are difficult to accommodate, complex loading conditions cannot be implemented, and many ingenious experimental designs have to be shelved due to space constraints. At the same time, limited indoor space leads to crowded equipment placement, inconvenience for operators, and greatly increases the risk of experimental errors. On the other hand, during peak research periods, many teams gather here, only to wait in long queues in the limited space. A significant amount of valuable research time is wasted on unnecessary waiting, severely hindering research progress. If the equipment could be updated and designed as a portable, mobile reaction frame, the entire system could be quickly deployed to the site wherever testing is needed. Whether in an open outdoor area or a temporarily rented large space, tests could be quickly set up and conducted. This will greatly alleviate the above problems, make the experiment more flexible and efficient, and also help promote the popularization and progress of structural seismic resistance research.

[0004] Against the backdrop of continuous global urbanization and frequent extreme natural disasters, building earthquake-resistant cities has become a core strategic requirement for ensuring sustainable urban development and maintaining social stability. Currently, building resilience evaluation systems do not adequately consider external wall insulation systems, which is seriously contrary to reality. From a functional perspective, the thermal stability of external wall insulation systems during earthquakes directly relates to whether emergency shelters can provide suitable survival temperatures for affected people, which is crucial for maintaining social order and ensuring the rescue process. While existing scientific research methods have accumulated some achievements in the field of conventional wall heat transfer performance testing, they are struggling in simulating earthquake effects and are difficult to test specimens of different sizes. Existing quasi-static tests cannot effectively simulate the thermal function loss of external wall insulation systems during earthquakes, making it impossible to accurately reproduce the thermal function changes of insulation systems under earthquake scenarios and obtain accurate data to support the theoretical development of earthquake-resistant cities. This limitation at the experimental level has become a key problem that urgently needs to be overcome in promoting the construction of earthquake-resistant cities.

[0005] In summary, existing quasi-static tests have the technical problem of failing to effectively simulate the thermal performance loss of external wall insulation systems during earthquakes. Summary of the Invention

[0006] The present invention addresses the technical problem that existing quasi-static tests cannot effectively simulate the thermal function loss of external wall insulation systems during earthquakes, and provides a device for monitoring the thermal function loss of walls at different damage stages. The device includes a measuring box and a self-reaction frame; the measuring box is arranged on one side of the self-reaction frame.

[0007] The measuring box includes a box panel, thermal insulation rubber, rubber suction cups, vacuum components, sealing device, scissor brace hydraulic mechanism, corner jacks, cold light lamps, dual-light cameras, and a first control panel;

[0008] The box panel is equipped with a bottom plate and a body plate. The bottom plate is rectangular and the body plate has an L-shaped cross-section. The four box panels are connected by thermal insulation rubber and enclose a rectangular cavity. A rubber suction cup is installed at the head of the cavity and a sealing device is installed at the tail of the cavity.

[0009] The scissor-bracing hydraulic mechanism is installed at the joint between the four box plates. The four corner jacks are installed at the four corners of the measuring box. The vacuum assembly is installed on the body plate. The cold light lamp is installed on the top of the inner wall of the cavity. The dual-light camera is installed on the sealing device. The first control panel is installed on the outer wall of the bottom plate. The first control panel is electrically connected to the cold light lamp, the dual-light camera, the vacuum assembly and the scissor-bracing hydraulic mechanism.

[0010] The self-reacting frame includes a reaction frame body, a static load reaction device, a horizontal actuator, a movable clamping plate, a hydraulic rod, a telescopic device, a lifting mechanism, a sliding device, and a second control panel;

[0011] A horizontal sliding device is installed on the crossbeam of the reaction frame, and a vertically arranged hydraulic rod is installed on the sliding device. A static load reaction device is installed at the lower end of the hydraulic rod. Lifting mechanisms are installed on both sides of the reaction frame. A slide rail is installed vertically on the column of the reaction frame, and a horizontal actuator is installed on the slide rail. The moving clamp is installed horizontally on the base of the reaction frame through a telescopic device.

[0012] As another improvement of the present invention, a wire winch, a fan, a refrigeration unit, a heater and a humidification system are also installed on the inner wall of the base plate, and the first control panel is electrically connected to the wire winch, the fan, the refrigeration unit, the heater and the humidification system respectively.

[0013] As another improvement of the present invention, the vacuum assembly includes a vacuum generator, a rubber tube and a rubber tube winch, wherein the vacuum generator is connected to the rubber tube via the rubber tube winch and the rubber suction cup is connected to the cavity via the rubber tube.

[0014] As another improvement of the present invention, the measuring box further includes a plug placement port, a first moving device, and a first dragging device. The first moving device is installed on both sides of the bottom of the measuring box, and the first dragging device is also installed on the bottom of the measuring box. The plug placement port is installed at the rear of the measuring box.

[0015] As another improvement of the present invention, the measuring box also includes a telescopic cover plate, which is installed at the joint between the four box plates and is installed on the outside of the thermal insulation rubber.

[0016] As another improvement of the present invention, the sealing device includes a sealing frame, on which both the upper and lower beams are provided with transverse grooves, on which vertical slide bars are installed, on which vertical slide rails are installed, on which telescopic rods are installed, and on which four telescopic rods are respectively connected to four base plates. Two slide bars are installed, and four telescopic rods are installed. A rubber sealing ring is installed on the inner wall of the sealing frame.

[0017] As another improvement of the present invention, the self-reacting frame also includes a second moving device, a second towing device and a ground anchor structure. The base of the reaction frame is equipped with a liftable second moving device at the front and rear, and the base of the reaction frame is provided with a second towing device and a ground anchor structure on the left and right sides.

[0018] As another improvement of the present invention, a heat insulation layer is provided in the middle of the wall of the box panel, and the heat insulation layer is made of expanded polystyrene.

[0019] As another improvement of the present invention, the cross-section of the heat-insulating rubber is set to be wavy.

[0020] The present invention also provides a method comprising the following steps:

[0021] S1. Place the measuring box directly in front of the self-reacting frame, and arrange the rubber suction cup behind the composite insulation wall in the middle of the specimen. Operate the first control panel and adjust the size of the measuring box through the scissor support hydraulic mechanism.

[0022] S2. Place the rectangular loading beam at the top of the specimen directly below the static load reaction device, operate the second control panel, and clamp the rectangular foundation beam at the bottom of the specimen by moving the clamping plate.

[0023] S3. Anchor the rectangular foundation beam and the foundation at the bottom of the specimen, and anchor the reaction frame and the foundation.

[0024] S4. Use the corner jacks to lift the measuring box and adjust it to the designed height, then retract the sealing device to make it fit tightly against the measuring box;

[0025] S5. Attach the rubber suction cup to the back surface of the composite insulation wall in the middle of the specimen, start the vacuum generator in the control panel, press the rubber suction cup tightly against the specimen and complete the seal.

[0026] S6. Adjust the static load reaction device and the horizontal actuator to the loading position, set the corresponding load through the first control panel, connect the data acquisition device to the first control panel, and acquire visible light and infrared light images during the test.

[0027] S7. Using the analysis software in the data acquisition equipment, the acquired visible light and infrared light images are processed in real time to obtain the thermal function loss of the composite insulation wall under different damage states.

[0028] The beneficial effects of this invention are:

[0029] 1. The overall structure of the measuring box is designed to accommodate the deformation of the wall at different stages of an earthquake. During the experiment, a series of images are captured in real time by a dual-light camera to observe the changes in the heat transfer coefficient at wall defects and obtain the experimental results.

[0030] 2. A scissor brace hydraulic mechanism is installed at the joints between the four corner jacks and the body panels of the measuring box to stabilize the measuring box and prevent the insulation rubber from sinking and deforming due to its own weight before measurement. This mechanism also ensures that the measuring box does not change size simultaneously with its deformation. The selected vacuum suction cup has excellent deformation capabilities and can deform along with the overall structure of the measuring box.

[0031] 3. The addition of a mobile device and a dragging mechanism facilitates the movement of the measuring box and the self-reacting frame, enabling on-site operations and expanding the application scenarios. Attached Figure Description

[0032] Figure 1This is a schematic diagram of the overall structure of a device for monitoring the thermal function loss of composite insulated walls under seismic loading, according to the present invention.

[0033] Figure 2 This is a schematic diagram of the first structure of the measuring box.

[0034] Figure 3 This is a schematic diagram showing the installation location of the scissor brace hydraulic mechanism.

[0035] Figure 4 This is a schematic diagram of the second structure of the measuring box.

[0036] Figure 5 This is a schematic diagram of the third structure of the measuring box.

[0037] Figure 6 This is a rear view of the measuring box.

[0038] Figure 7 This is a left-side view of the measuring box.

[0039] Figure 8 This is a schematic diagram showing the installation location of the sealing device.

[0040] Figure 9 This is a schematic diagram of a self-reacting frame.

[0041] Figure 10 This is a schematic diagram showing the installation locations of the vacuum components, wire winch, fan, chiller, heater, and humidifier.

[0042] Figure 11 This is a schematic diagram of the sealing device.

[0043] Figure 12 This is a structural diagram of the box panel, insulation rubber, retractable cover plate, and insulation layer. Detailed Implementation

[0044] The technical solutions in 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, not all embodiments. Based on the embodiments of the present invention, all embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. In the description of the present invention, it should be noted that the positional relationships indicated by terms such as "upper," "lower," "front," and "rear" are only based on the positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention, and are not intended to indicate or imply that the referred components have a specific orientation, or are constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0045] Specific implementation method one: Combining Figures 1 to 10This embodiment describes a device for monitoring the thermal performance loss of composite insulated walls under seismic loading. It includes a measuring box and a self-reaction frame; the measuring box is arranged on one side of the self-reaction frame.

[0046] The measuring box includes a box panel 1, thermal insulation rubber 2, rubber suction cup 20, vacuum assembly, sealing device 19, scissor brace hydraulic mechanism 11, corner jack 15, cold light lamp 13, dual-light camera and first control panel 14;

[0047] The box panel 1 has a bottom plate and a body plate. The bottom plate is rectangular and the body plate has an L-shaped cross-section. The four box panels 1 are connected by thermal insulation rubber 2, and the four box panels 1 enclose a rectangular cavity. The cavity is a semi-closed structure. A rubber suction cup 20 is installed at the head of the cavity. The rubber suction cup 20 has a through rubber tube hole. A sealing device 19 is installed at the tail of the cavity. The inner and outer walls of the box panel 1 are made of stainless steel. The rubber suction cup 20 includes a rubber frame and a suction nozzle. The rubber suction cup 20 is connected to the body plate and the thermal insulation rubber through the rubber frame. The thermal insulation rubber 2 and the rubber frame are both made of rubber and are made as one piece.

[0048] The scissor-support hydraulic mechanism 11 is installed at the joint between the four body plates 1. The insulation rubber 2 is double-layered, and the scissor-support hydraulic mechanism 11 is installed in the interlayer of the insulation rubber 2. The four corner jacks 15 are respectively installed at the four corners of the measuring box. A vacuum assembly is installed on the body plate. A cold light lamp 13 is installed on the top of the inner wall of the cavity. A dual-light camera is installed on the sealing device. A first control panel 14 is installed on the outer wall of the bottom plate. The first control panel 14 is electrically connected to the cold light lamp 13, the dual-light camera, the vacuum assembly, and the scissor-support hydraulic mechanism 11. Scissor-support hydraulic mechanisms for controlling the deformation of the measuring box are set on the upper, lower, left, and right parts of the measuring box. The scissor-support hydraulic mechanisms on the left and right parts of the measuring box are similar to the upper and lower structures, so they are not shown in the accompanying drawings. No scissor-support hydraulic mechanism is set on the rear of the measuring box.

[0049] The self-reacting frame includes a reaction frame body 21, a static load reaction device 22, a horizontal actuator 23, a movable clamping plate 24, a hydraulic rod 25, a telescopic device, a lifting mechanism 26, a sliding device 27, and a second control panel 28.

[0050] A transverse sliding device 27 is installed on the crossbeam of the reaction frame 21. A vertically arranged hydraulic rod 25 is installed on the sliding device 27. A static load reaction device 22 is installed at the lower end of the hydraulic rod 25. Lifting mechanisms 26 are installed on both sides of the uprights of the reaction frame 21. A slide rail is installed vertically on the uprights of the reaction frame 21. A horizontal actuator 23 is installed on the slide rail. A movable clamp 24 is installed transversely on the base of the reaction frame 21 via a telescopic device. The reaction frame is made of steel with sufficient rigidity. The self-reaction frame has a deformation function. The required dimensions can be input in the second control panel to control the raising and extending of the self-reaction frame. When the specimen is placed, the movable clamp at the bottom of the self-reaction frame will clamp the rectangular foundation beam at the bottom of the specimen. At the same time, the rectangular foundation beam at the bottom of the specimen should also be anchored to the foundation. The static load reaction device at the top of the self-reaction frame, with the help of the hinge support at the top of the specimen and its own axial force follower device, is used to move together with the specimen during quasi-static loading.

[0051] The purpose of this design is to adapt the measuring box to the deformation of the wall at different stages of an earthquake. During the experiment, a series of images are captured in real time by a dual-light camera to observe the change in the heat transfer coefficient at the wall defects and obtain the experimental results. The dual-light camera is an integrated camera that carries both visible light and infrared lenses. The cold light lamp provides illumination to the measured surface of the wall, facilitating the acquisition of visible light images, and does not emit radiant heat to avoid affecting the acquisition of infrared images. The dual-light camera is placed at the rear of the measuring box, and the entire measuring box's image acquisition is connected to a computer. During normal operation, the camera simultaneously acquires visible light and infrared light images, and automatically marks the images when the specimen is damaged. When there is a temperature difference between the two sides of the specimen wall, heat will transfer between the inner and outer surfaces of the specimen wall. The amount of heat transfer is related to the overall heat transfer coefficient of the specimen wall; the higher the heat transfer coefficient, the stronger the heat transfer performance. When a test specimen's wall structure is damaged, the heat transfer coefficient at the defect site changes. In thermal imaging, this manifests as the defect area being brighter or darker than the undamaged area. For example, if the insulation material of the test specimen's wall detaches, an air gap will form at the damaged area, reducing the heat transfer coefficient. The hotter side will have difficulty transferring heat to the cooler side, which will appear brighter in the infrared image. Therefore, by capturing a series of images during the loading process in real time using a camera, the above principle can be applied to monitor in real time where damage has occurred in the wall. This simulates earthquake effects and monitors the thermal energy loss at different stages of damage, thereby quantitatively evaluating the resilience of the building envelope.

[0052] Specific Implementation Method Two: Combining Figure 5 and Figure 10This embodiment differs from specific embodiment one in that it also includes a wire winch 9, a fan 4, a chiller 5, a heater 6, and a humidifier 7 installed on the inner wall of the base plate. The first control panel 14 is electrically connected to the wire winch 9, fan 4, chiller 5, heater 6, and humidifier 7. The wire winch is embedded in the inner wall of the base plate, and the fan, chiller, heater, and humidifier are installed through mounting openings on the base plate. Temperature sensors are evenly distributed on the inner surface of the measuring box and the inner surface of the rubber parts for real-time monitoring of the internal temperature of the measuring box. The internal temperature, humidity, and lighting of the measuring box can be controlled by the first control panel outside the measuring box. Since the measuring box needs to deform, wire winches are configured to ensure that the wires of the corresponding electromechanical equipment and the rubber tubes used for vacuuming can extend and shorten in tandem. When the measuring box deforms, a preset program ensures that the deformation of the measuring box and the extension and contraction of the pipeline are the same, avoiding the breakage of the pipeline. Other components and connection methods are the same as in specific embodiment one.

[0053] Specific implementation method three: Combining Figure 5 and Figure 10 This embodiment differs from specific embodiment one in that the vacuum assembly includes a vacuum generator 8, rubber tubing, and a rubber tubing winch 10. The vacuum generator 8 is connected to the rubber tubing via the rubber tubing winch 10, and the rubber suction cup 20 communicates with the cavity via the rubber tubing. The rubber tubing is gathered into a single main tube and then wound around the rubber tubing winch. This design is easy to implement. Other components and connection methods are the same as in specific embodiment one or two.

[0054] Specific implementation method four: Combination Figure 1 , Figure 6 and Figure 7 This embodiment differs from specific embodiment one in that the measuring box further includes a plug placement port 16, a first moving device 17, and a first dragging device 18. The first moving device 17 is installed on both sides of the bottom of the measuring box, and the first dragging device 18 is also installed on the bottom of the measuring box. The plug placement port 16 is installed at the rear of the measuring box. The plug can be placed or removed as needed. The dragging device 18 is connected to the measuring box via a guide rail at the bottom of the measuring box. The purpose of the first moving device 17 and the dragging device 18 is to facilitate the movement of the measuring box. Other components and connection methods are the same as any one of specific embodiments one to three.

[0055] Specific Implementation Method Five: Combining Figure 1 , Figure 7 and Figure 12This embodiment differs from specific embodiment one in that the measuring box also includes a retractable cover 3. The retractable cover 3 is installed at the joint between the four box panels 1 and is mounted on the outside of the insulation rubber 2. The cover is opened when measurement is needed and automatically closes when measurement is about to begin or end, and the cover locking latch also automatically engages. These functions are implemented through a predetermined program in the first control panel. Other components and connection methods are the same as in any one of specific embodiments one to four.

[0056] Specific Implementation Method Six: Combination Figure 1 , Figure 7 and Figure 12 This embodiment differs from specific embodiment one in that the sealing device 19 includes a sealing frame. Both the upper and lower beams of the sealing frame have transverse grooves. Vertical sliding strips are installed on the grooves, and vertical sliding rails are installed on the sliding strips. Telescopic rods are installed on the sliding rails. Four telescopic rods are connected to four base plates respectively. Two sliding strips and four telescopic rods are installed. A rubber sealing ring 12 is installed on the inner wall of the sealing frame. The sealing device is installed on both the inner and outer sides of the base plates to enhance sealing. Simultaneously, the telescopic rods of the sealing device can be adjusted by deformation according to the measuring box. Other components and connection methods are the same as any one of specific embodiments one to five.

[0057] Specific implementation method seven: Combination Figure 1 and Figure 9 This embodiment differs from specific embodiment one in that the self-reaction frame further includes a second moving device 37, a second towing device 38, and a ground anchor structure 29. The base of the reaction frame is equipped with a liftable second moving device 37 at the front and rear, and the second towing device 38 and ground anchor structure 29 are located on the left and right sides of the base. The purpose of these components is to facilitate the movement and anchoring of the self-reaction frame. The self-reaction frame has wheels on both sides, and these wheels have a lifting function. During measurement, the wheels can be raised via the control panel, and then the self-reaction frame is fixed to the ground via the ground anchor structures on both sides. Other components and connection methods are the same as in any one of specific embodiments one through six.

[0058] Specific implementation method eight: Combination Figure 12 This embodiment differs from specific embodiment one in that an insulation layer 30, made of expanded polystyrene, is provided in the middle of the wall of the box panel 1. This insulation layer 30 enhances the insulation effect of the measuring box and improves the stability of the test results. Other components and connection methods are the same as any one of specific embodiments one through seven.

[0059] Specific Implementation Method Nine: Combining Figure 2 and Figure 12This embodiment differs from specific embodiment one in that the cross-section of the insulating rubber 2 is wavy. This design increases the deformability of the insulating rubber. Other components and connection methods are the same as in any one of specific embodiments one through eight.

[0060] Specific Implementation Method Ten: Combining Figures 1 to 12 This embodiment describes a method, which, as described in embodiments one through nine, provides a device for monitoring the thermal performance loss of composite insulated walls under seismic loading, comprising the following steps:

[0061] S1. Place the measuring box directly in front of the self-reacting frame, and arrange the rubber suction cup 20 behind the composite insulation wall in the middle of the specimen. Operate the first control panel 14 and adjust the size of the measuring box through the scissor support hydraulic mechanism 11. The rubber suction cup includes upper and lower suction cups and side suction cups. The upper and lower suction cups are arranged behind the wall in the middle of the specimen, and the side suction cups are arranged on the sides of the specimen.

[0062] S2. Place the rectangular loading beam at the top of the specimen directly below the static load reaction device 22, operate the second control panel 28, and clamp the rectangular foundation beam at the bottom of the specimen by moving the clamping plate 24.

[0063] S3. Anchor the rectangular foundation beam and the foundation at the bottom of the specimen, and anchor the reaction frame 21 and the foundation.

[0064] S4. Use the corner jack 15 to lift the measuring box and adjust it to the designed height, then retract the sealing device 19 to make it fit tightly against the measuring box.

[0065] S5. Attach the rubber suction cup 20 to the back surface of the composite insulation wall in the middle of the specimen, start the vacuum generator 8 in the control panel, and press the rubber suction cup 20 tightly onto the specimen to complete the seal.

[0066] S6. Adjust the static load reaction device 22 and the horizontal actuator 23 to the loading position. The side of the rectangular loading beam at the top of the specimen is connected to the horizontal actuator 23 through a steel plate and a long screw. The top surface of the rectangular loading beam at the top of the specimen is connected to the static load reaction device 22 through a hinge support. Set the corresponding load through the first control panel 14, connect the data acquisition device to the first control panel 14, and acquire visible light and infrared light images during the test.

[0067] S7. Using the analysis software in the data acquisition equipment, the acquired visible light and infrared light images are processed in real time to obtain the thermal function loss of the composite insulation wall under different damage states.

[0068] At the end of the test, disconnect the static load reaction device and the horizontal actuator from the specimen, loosen the moving clamp, switch the vacuum generator to compressed air to detach the rubber suction cup from the specimen, retract the corner jacks of the measuring box, remove the fixed anchor rods in the bottom rectangular foundation beam and the ground anchor structure of the self-reaction frame, and finally remove the specimen.

[0069] Release the sealing device at the rear of the measuring box, open the retractable cover of the measuring box connection part, lower the second moving device of the self-reacting frame, and restore the measuring box and the self-reacting frame to their original dimensions.

[0070] Close the retractable cover of the measuring box connection section, pull out the first towing device at the bottom of the measuring box, the transport vehicle first connects to the second towing device of the self-reacting frame, and then connects the self-reacting frame to the measuring box to transport the entire structure away.

[0071] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for monitoring the thermal performance loss of composite insulated walls under seismic loading, characterized in that... It includes a measuring box and a self-reacting frame; the measuring box is arranged on one side of the self-reacting frame; The measuring box includes a box panel (1), thermal insulation rubber (2), rubber suction cup (20), vacuum assembly, sealing device (19), scissor brace hydraulic mechanism (11), corner jack (15), cold light lamp (13), dual-light camera and first control panel (14); The box panel (1) is provided with a bottom plate and a body plate. The bottom plate is rectangular and the body plate has an L-shaped cross section. The four box panels (1) are connected by heat-insulating rubber (2). The four box panels (1) enclose a rectangular cavity. A rubber suction cup (20) is installed at the head of the cavity, and a sealing device (19) is installed at the tail of the cavity. The scissor-support hydraulic mechanism (11) is installed at the joint between the body plates of the four boxes (1), the four corner jacks (15) are respectively installed at the four corners of the measuring box, the body plate is equipped with a vacuum assembly, the top of the inner wall of the cavity is equipped with a cold light lamp (13), the sealing device (19) is equipped with a dual-light camera, the outer wall of the bottom plate is equipped with a first control panel (14), and the first control panel (14) is electrically connected to the cold light lamp (13), the dual-light camera, the vacuum assembly and the scissor-support hydraulic mechanism (11); The self-reacting frame includes a reaction frame body (21), a static load reaction device (22), a horizontal actuator (23), a movable clamping plate (24), a hydraulic rod (25), a telescopic device, a lifting mechanism (26), a sliding device (27), and a second control panel (28); A transverse sliding device (27) is installed on the crossbeam of the reaction frame (21). A vertically arranged hydraulic rod (25) is installed on the sliding device (27). A static load reaction device (22) is installed at the lower end of the hydraulic rod (25). Lifting mechanisms (26) are installed on both sides of the column of the reaction frame (21). A slide rail is installed vertically on the column of the reaction frame (21). A horizontal actuator (23) is installed on the slide rail. The movable clamp (24) is installed transversely on the base of the reaction frame (21) through a telescopic device.

2. The device for monitoring the thermal performance loss of composite insulated walls under seismic loading as described in claim 1, characterized in that, The inner wall of the base plate is also equipped with a wire winch (9), a fan (4), a chiller (5), a heater (6) and a humidifier (7). The first control panel (14) is also electrically connected to the wire winch (9), the fan (4), the chiller (5), the heater (6) and the humidifier (7) respectively.

3. The device for monitoring the thermal performance loss of composite insulated walls under seismic loading as described in claim 1, characterized in that, The vacuum assembly includes a vacuum generator (8), a rubber tube and a rubber tube winch (10). The vacuum generator (8) is connected to the rubber tube through the rubber tube winch (10), and the rubber suction cup (20) is connected to the cavity through the rubber tube.

4. The device for monitoring the thermal performance loss of composite insulated walls under seismic loading as described in claim 1, characterized in that, The measuring box also includes a plug placement port (16), a first moving device (17), and a first towing device (18). The first moving device (17) is installed on both sides of the bottom of the measuring box, and the first towing device (18) is also installed on the bottom of the measuring box. The plug placement port (16) is installed at the rear of the measuring box.

5. The device for monitoring the thermal performance loss of composite insulated walls under seismic loading as described in claim 4, characterized in that, The measuring box also includes a telescopic cover (3), which is installed at the joint between the four box panels (1) and on the outside of the thermal insulation rubber (2).

6. The device for monitoring the thermal performance loss of composite insulated walls under seismic loading as described in claim 1, characterized in that, The sealing device (19) includes a sealing frame. The upper and lower beams of the sealing frame are provided with transverse grooves. Vertical slide bars are installed on the slide bars. Vertical slide rails are installed on the slide bars. Telescopic rods are installed on the slide rails. The four telescopic rods are respectively connected to four base plates. Rubber sealing rings (12) are installed on the inner wall of the sealing frame.

7. The device for monitoring the thermal performance loss of composite insulated walls under seismic loading according to claim 1, characterized in that, The self-reaction frame also includes a second moving device (37), a second towing device (38), and a ground anchor structure (29). The base of the reaction frame is equipped with a liftable second moving device (37) at the front and rear. The base of the reaction frame is provided with a second towing device (38) and a ground anchor structure (29) on the left and right sides.

8. The device for monitoring the thermal performance loss of composite insulated walls under seismic loading according to claim 1, characterized in that, A thermal insulation layer (30) is provided in the middle of the wall of the box panel (1), and the thermal insulation layer (30) is made of expanded polystyrene.

9. The device for monitoring the thermal performance loss of composite insulated walls under seismic loading according to claim 1, characterized in that, The cross section of the thermal insulation rubber (2) is set to be wavy.

10. A method, characterized in that, The method, based on the device for monitoring the thermal function loss of composite insulated walls under seismic loading as described in claim 1, includes the following steps: S1. Place the measuring box in front of the self-reactive frame, arrange the rubber suction cup (20) behind the composite insulation wall in the middle of the specimen, operate the first control panel (14), and adjust the size of the measuring box through the scissor support hydraulic mechanism (11). S2. Place the rectangular loading beam at the top of the specimen directly below the static load reaction device (22), operate the second control panel (28), and clamp the rectangular foundation beam at the bottom of the specimen by moving the clamping plate (24); S3. Anchor the rectangular foundation beam and the foundation at the bottom of the specimen, and anchor the reaction frame (21) and the foundation. S4. Use the corner jack (15) to lift the measuring box and adjust it to the designed height, and retract the sealing device (19) to make it fit tightly with the box body; S5. Place the rubber suction cup (20) on the back surface of the composite insulation wall in the middle of the specimen, start the vacuum generator (8) in the control panel, and press the rubber suction cup (20) tightly onto the specimen to complete the sealing. S6. Adjust the static load reaction device (22) and the horizontal actuator (23) to the loading position, set the corresponding load through the first control panel (14), connect the data acquisition device to the first control panel (14), and obtain visible light and infrared light images during the test. S7. Using the analysis software in the data acquisition equipment, perform real-time processing on the acquired visible light and infrared light images. To obtain the thermal function loss of composite insulation walls under different damage states.

Images