Northeast cold region ground construction air membrane type repeatable heat preservation and storage operation device

Abstract

This invention relates to the field of thermal insulation equipment for foundation engineering construction, and discloses a reusable, air-supported membrane thermal insulation and heat storage device for foundation construction in the cold region of Northeast China. The air membrane forms a closed thermal insulation and heat storage space; a heating component is disposed inside the air membrane to supply heat to the thermal insulation and heat storage space; a movable support component includes a steel rail and a steel support slidably and detachably mounted on the rail, with the air membrane detachably connected to the steel support; a pressure regulating component communicates with the air membrane to inflate or deflat the air membrane; a control component includes a temperature control switch for detecting the temperature inside the air membrane and controlling the start and stop of the heating component, and a pressure control switch for detecting the air pressure inside the air membrane and controlling the working mode of the pressure regulating component; a power supply component provides electrical energy to the heating component and the pressure regulating component. This invention enables automation, intelligence, and environmental protection in foundation construction thermal insulation in cold regions, while also being easy to assemble and disassemble, foldable for storage, and reusable.

Description

Technical Field

[0001] This invention relates to the field of thermal insulation equipment for foundation engineering construction, and in particular to a reusable, heat-storing, air-film type thermal insulation device for foundation construction in the cold region of Northeast China. Background Technology

[0002] Given the extremely low temperatures and long duration of winters in the frigid Northeast region, foundation construction is highly susceptible to problems such as soil frost heave, pit wall icing, and insufficient curing temperature after concrete pouring. These issues not only reduce the overall quality of foundation construction but can also significantly decrease construction efficiency and even lead to engineering safety accidents such as pit collapse and substandard concrete strength.

[0003] Currently, traditional insulation measures commonly used in foundation construction in cold regions, such as cotton quilt covering and coal-fired boiler heating, have many drawbacks: First, the insulation effect is poor, the temperature control is inaccurate, and it is difficult to maintain a constant and suitable construction temperature; second, energy consumption is high, and methods such as coal combustion cause serious pollution, which does not meet the requirements of green construction; third, the operational flexibility is low, as traditional insulation facilities are mostly disposable or fixed structures, and the covering position cannot be flexibly adjusted according to changes in the construction area; fourth, the devices are difficult to assemble and disassemble, as they are mostly welded or anchored once, making them difficult to disassemble after construction and unable to be reused, resulting in high construction costs.

[0004] Therefore, there is an urgent need for a heat preservation and heat storage device that can adapt to the low-temperature environment of the cold region of Northeast China, achieve automated and precise temperature control, be flexible and mobile, be easy to assemble and disassemble, and be reusable, in order to solve the above-mentioned problems in the existing technology. Summary of the Invention

[0005] The purpose of this invention is to provide a reusable, heat-storing, air-film type foundation construction device for cold regions in Northeast China, aiming to solve or improve at least one of the above-mentioned technical problems, realize the automation, intelligence, and environmental protection of foundation construction heat preservation in cold regions, and at the same time achieve convenient disassembly and assembly, foldable storage, and reusability.

[0006] To achieve the above objectives, the present invention provides the following solution: The present invention provides a reusable, heat-storage, air-supported membrane structure for foundation construction in the cold region of Northeast China, comprising: Air-supported membrane structures are used to form enclosed, heat-insulating, and heat-storing spaces. A heating component is disposed on the inner side of the air film and is used to supply heat to the heat storage space; The mobile support assembly includes a steel rail laid on the construction ground and a steel support that is slidably and detachably mounted on the steel rail. The air membrane is detachably connected to the steel support, and the steel support slides along the steel rail to move the air membrane and cover different foundation construction areas. A pressure regulating component, connected to the air membrane, is used to inflate the air membrane or extract air from the air membrane; The control component includes a temperature control switch for detecting the temperature inside the air film and controlling the start and stop of the heating component, and a pressure control switch for detecting the air pressure inside the air film and controlling the working mode of the air pressure regulating component. A power supply component is used to provide electrical energy to the heating component and the pressure regulating component.

[0007] Optionally, the rail is a segmented, splicable structure and is fixed to the construction ground by detachable anchors.

[0008] Optionally, the anchor is an anchor bolt, and the rail has multiple bolt holes.

[0009] Optionally, the bottom of the steel support is provided with an upper pulley and a lower pulley, and the steel rail is provided with a sliding groove that slides with the upper pulley and the lower pulley.

[0010] Optionally, the power supply components include a solar panel and a battery. The solar panel converts light energy into electrical energy and stores it in the battery. The battery supplies power to the heating component, the air pressure regulating component, and the control component via wires.

[0011] Optionally, the heating component is a flexible electric heating tube, which is evenly laid on the inner wall and / or bottom of the air film and closely adhered to the air film, and the flexible electric heating tube is detachably connected to the air film.

[0012] Optionally, the air pressure regulating component includes an air compressor capable of inhaling or inflating air, and an inflation connection pipe and an air delivery pipe connecting the air compressor and the air film. Under the control of the air pressure control switch, the air compressor selectively inflates the air film or extracts air from the air film.

[0013] Optionally, a limiting member for fixing the position of the steel support is provided between the steel support and the steel rail.

[0014] Optionally, the temperature control switch is configured to: close the power supply circuit of the heating component when the temperature inside the air film is lower than a preset lower limit, and disconnect the power supply circuit of the heating component when the temperature inside the air film is higher than a preset upper limit.

[0015] Optionally, the air pressure control switch is configured to: when the air pressure inside the air film is lower than a preset stable value, control the air pressure regulating component to inflate the air film; and when the air pressure inside the air film is higher than a preset safety value, control the air pressure regulating component to evacuate the air film.

[0016] The present invention discloses the following technical effects: This invention creates a closed space by setting up an air film, which, together with the internal heating components, can effectively isolate the external frigid environment and provide a continuous and stable positive temperature environment for foundation construction, thus solving the problems of poor performance and uneven temperature in traditional insulation methods.

[0017] This invention uses steel rails laid on the ground and sliding, detachable steel supports to install the air-supported membrane structure onto a mobile support assembly. The device can slide horizontally along the steel rails, easily covering different foundation construction areas without the need for complete disassembly and reassembly, greatly improving the flexibility and continuity of construction.

[0018] This invention uses a temperature control switch and a pressure control switch to monitor the temperature and pressure inside the air-supported membrane in real time, and automatically controls the start and stop of the heating components and the inflation / extraction mode of the pressure regulating components. This design ensures that the air-supported membrane is always within a suitable temperature range and has a stable forming pressure, avoiding the errors and tediousness of manual monitoring and adjustment, and improving the reliability and safety of the operation.

[0019] In this invention, the air-supported membrane and the steel support, as well as the rails and the ground, are all detachably connected. After construction, the gas inside the air-supported membrane can be extracted using the air pressure regulating component, and the membrane can be folded and stored. Metal components such as the rails and steel supports can also be quickly disassembled and stored separately. All components can be reused in subsequent construction projects, significantly reducing the investment cost of insulation equipment for foundation construction in cold regions.

[0020] This invention provides clean energy to heating and pressure regulation components by using solar panels and batteries as power supply components, enabling operation without external power sources, reducing dependence on traditional fossil fuels, reducing carbon emissions and environmental pollution, and aligning with the development direction of green construction. Attached Figure Description

[0021] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the rail structure of the present invention; Figure 3 This is a schematic diagram of the pulley and rail assembly according to the present invention; Figure 4 This is a schematic diagram of the gas transmission pipeline and gas filling connection pipe of the present invention; Figure 5 This is a schematic diagram of the on-site construction of the present invention.

[0022] In the diagram: 1. Air film; 2. Flexible electric heating tube; 3. Steel rail; 4. Steel support; 5. Solar panel; 6. Storage battery; 7. Air compressor; 8. Inflation connection pipe; 9. Air transmission pipeline; 10. Upper pulley; 11. Lower pulley; 12. Wire; 13. Temperature control switch; 14. Air pressure control switch; 15. Foundation; 16. Bolt hole. Detailed Implementation

[0023] 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.

[0024] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Reference Figures 1 to 5 This invention provides a reusable, heat-storing, air-supported membrane structure for foundation construction in the cold regions of Northeast China. The structure includes: an air-supported membrane 1 for forming a closed heat-storing space; a heating component disposed inside the air-supported membrane 1 for supplying heat to the heat-storing space; a movable support component including a steel rail 3 laid on the construction ground and a steel support 4 slidably and detachably mounted on the steel rail 3, wherein the air-supported membrane 1 is detachably connected to the steel support 4, and the steel support 4 slides along the steel rail 3 to move the air-supported membrane 1 and cover different foundation construction areas; a pressure regulating component connected to the air-supported membrane 1 for inflating or deflating the air-supported membrane 1; a control component including a temperature control switch 13 for detecting the temperature inside the air-supported membrane 1 and controlling the start and stop of the heating component, and a pressure control switch 14 for detecting the air pressure inside the air-supported membrane 1 and controlling the working mode of the pressure regulating component; and a power supply component for providing electrical energy to the heating component and the pressure regulating component. This system systematically solves the core problems of insulation, temperature control, mobile operation, reuse, and energy supply in foundation construction in cold regions. The air-supported membrane 1 and heating components address insulation and heat storage; the steel rails 3 and steel supports 4 ensure flexible movement; the air pressure regulating components ensure stable air-supported membrane formation; the temperature control switch 13 and air pressure control switch 14 provide intelligent control; and the power supply components ensure energy self-sufficiency. The organic combination of these five functions enables the device to independently, efficiently, and economically complete the insulation and protection tasks for foundation construction in extremely cold environments.

[0026] Furthermore, the connection methods between the air membrane 1 and the steel support 4 include: The hook-and-eyelet method involves sewing or heat-sealing a metal or high-strength plastic eyelet at regular intervals (e.g., 300-500mm) along the edge of the air membrane 1. Rotary hooks or spring hooks are welded or bolted to the corresponding positions on the steel support 4. During installation, straighten the edge of the air membrane 1, pass the hook through the eyelet, and lock it; to disassemble, simply open the hook.

[0027] The quick-clamp method involves installing multiple manual quick-clamps on the steel support 4. A pre-fabricated reinforcing strip (such as PVC mesh strip) is installed at the edge of the air-supported membrane 1; the clamping feet of the clamps can press this reinforcing strip firmly. Clamping or releasing the clamps is achieved by turning the clamp handle.

[0028] The pressure plate and bolt method involves a lower pressure plate on the steel support 4, with the edge of the air film 1 covering the upper pressure plate. Wing bolts or quick-release bolts are used to pass through the upper and lower pressure plates and tighten them.

[0029] In this embodiment, the rail 3 is a segmented, splicable structure, fixed to the construction ground by detachable anchors. The segmented design allows for flexible splicing according to the actual length of the construction area, without being limited by a fixed length, adapting to foundation projects of different scales. The segmented structure facilitates disassembly, packing, transportation, and warehouse storage, reducing logistics costs and storage space. The use of detachable anchors allows for complete removal after construction, leaving no protrusions or welding residue on the ground and not affecting subsequent procedures.

[0030] In this embodiment, the anchor is an anchor bolt, and multiple bolt holes 16 are provided on the rail 3. The anchor bolt provides reliable anchoring force to resist lateral thrust or vibration that may occur during construction. The design of multiple bolt holes 16 allows for the selection of the optimal anchor point based on the actual ground conditions, ensuring that the rail 3 is level and stable. Bolted connection is a standard mechanical connection method, requiring only ordinary tools for assembly and disassembly, without the need for welding or cutting equipment, thus reducing the difficulty and time cost of on-site operations.

[0031] In this embodiment, the bottom of the steel support 4 is provided with an upper pulley 10 and a lower pulley 11, and the steel rail 3 is provided with a sliding groove that slides with the upper pulley 10 and the lower pulley 11. The cooperation between the upper pulley 10 and the lower pulley 11 and the sliding groove can effectively limit the swaying of the steel support 4 in the vertical and horizontal directions, making the movement process more stable and smooth, and it is not easy to get stuck even if the air film volume is large. The double-layer pulley structure distributes the weight of the air film and the steel support itself, reduces the pressure of a single pulley, improves the overall load-bearing capacity and durability of the sliding system, and adapts to the additional loads that may occur in cold regions, such as snow accumulation and icing. The sliding groove provides a precise movement trajectory for the pulleys, ensuring that the air film can accurately cover the predetermined construction area and avoid deviation.

[0032] Furthermore, the lower pulley 11 consists of two pulleys located on either side of the upper pulley 10.

[0033] In this embodiment, the power supply components include a solar panel 5 and a battery 6. The solar panel 5 converts light energy into electrical energy and stores it in the battery 6. The battery 6 supplies power to the heating components, air pressure regulating components, and control components via wires 12. Solar power generation is combustion-free, exhaust-free, and noiseless, making it particularly suitable for construction sites with high environmental requirements or those near residential areas. The battery 6 stores surplus daytime electricity, ensuring the normal operation of the device at night, on cloudy days, or when sunlight is insufficient, making it especially suitable for remote construction sites in the cold northeastern region with insufficient power grid coverage.

[0034] In this embodiment, the heating component is a flexible electric heating tube 2, which is evenly laid on the inner wall and / or bottom of the air film 1 and tightly adhered to the air film 1. The flexible electric heating tube 2 is detachably connected to the air film 1. The flexible electric heating tube 2 can conform to the irregular curved surface of the air film 1, achieving spatial radiation heating from the perimeter and bottom to the center, avoiding localized overheating or overcooling, and effectively preventing temperature difference cracks in concrete curing or uneven frost heave in the soil. The flexible material allows it to be folded or unfolded along with the air film 1 without repeated disassembly, simplifying the storage and reinstallation process. The detachable connection to the air film 1 facilitates individual inspection, replacement, or cleaning of the flexible electric heating tube 2, extending the service life of the core component.

[0035] Furthermore, the connection method between the flexible heating element 2 and the air film 1 includes: The Velcro is used for segmented fixation. A path is laid along the flexible heating tube 2 on the inner side of the air film 1, with a Velcro strip (or continuous strip) sewn every 200-300 mm. The Velcro hooks are then fixed (stitched or glued) to the corresponding positions on the outer sheath of the flexible heating tube 2. During installation, press to adhere the hooks; to remove, simply peel them apart.

[0036] Plastic clips or nylon cable ties are threaded through the pre-reserved rings of the air film. Multiple plastic D-rings or webbing loops are heat-sealed onto the inner side of the air film 1 along the path of the flexible heating tube 2. Reusable nylon cable ties or straps with clips are threaded through the loops and wrapped around the flexible heating tube 2 before being locked.

[0037] In this embodiment, the air pressure regulating component includes an air compressor 7 capable of inhaling or inflating air, and an inflation connection pipe 8 and an air delivery pipe 9 connecting the air compressor 7 and the air film 1. Under the control of the air pressure control switch 14, the air compressor 7 selectively inflates or evacuates air from the air film 1. The air compressor 7 can both inflate and evacuate air, performing two functions in one device, simplifying the system structure and reducing equipment costs. During inflation, the high-flow air delivery pipe 9 allows the air film 1 to quickly expand and take shape; after construction, the air compressor 7's evacuation mode can quickly vent the gas from the air film 1, causing it to collapse and facilitating folding. In conjunction with the air pressure control switch 14, the air compressor 7 can be started and stopped as needed, achieving fine-tuning of the air pressure, maintaining dynamic balance of air pressure within the air film 1, and avoiding air pressure fluctuations due to temperature changes.

[0038] In this embodiment, a limiting component is provided between the steel support 4 and the rail 3 to fix the position of the steel support 4. When the steel support 4 slides to the target construction area, the limiting component, such as a pin, locking bolt or stop, locks the position of the steel support 4, which can prevent the device from sliding accidentally during construction and ensure that the insulation space always accurately covers the working surface.

[0039] In this embodiment, the temperature control switch is configured to: close the power supply circuit of the heating component when the temperature inside the air film 1 is below a preset lower limit, and disconnect the power supply circuit of the heating component when the temperature inside the air film 1 is above a preset upper limit. This avoids continuous operation of the heating component, activating it only when the temperature is below the lower limit and stopping it when it is above the upper limit, effectively saving energy and extending the usage time of the battery 6 after a single charge. Maintaining the temperature within a suitable range avoids excessively high temperatures that cause rapid evaporation of concrete moisture or excessive melting of the soil, and also avoids excessively low temperatures that cause frost damage, providing an optimal temperature window for cement hydration reaction or soil antifreeze. This logic enables the device to automatically maintain a constant temperature environment without human intervention, making it particularly suitable for nighttime or intermittent construction periods, reducing the cost of manual inspection and operation.

[0040] Furthermore, the preset lower limit for temperature is 5℃, and the upper limit is 15℃. The lower limit can be ignored after construction is completed.

[0041] In this embodiment, the air pressure control switch is configured to: when the air pressure inside the air membrane 1 is lower than a preset stable value, control the air pressure regulating component to inflate the air membrane 1; when the air pressure inside the air membrane 1 is higher than a preset safety value, control the air pressure regulating component to evacuate the air membrane 1. When the internal air pressure of the air membrane 1 drops due to temperature decrease, minor leakage, or other reasons, automatic inflation can quickly replenish the pressure, maintain the full shape of the air membrane 1, and prevent it from collapsing and contacting or damaging the construction surface or heating components below. When the air pressure becomes too high due to daytime sun exposure or misoperation, automatic evacuation (or exhaust) can release excess pressure, preventing the air membrane 1 from tearing due to over-expansion or detaching from the steel support 4, thus ensuring equipment safety. In the cold northeastern region, the temperature difference between day and night is huge, and the air pressure inside the air membrane 1 is prone to fluctuation. This automatic adjustment mechanism is one of the core technical guarantees for the device to operate stably around the clock under severe temperature differences, greatly improving the robustness of the device.

[0042] Furthermore, the preset lower limit of pressure is 200Pa and the upper limit is 350Pa. The lower limit can be ignored after construction is completed.

[0043] Furthermore, a temperature sensor is installed inside the air membrane 1, and a pressure sensor is installed on the air supply pipeline 9, both of which are automatically controlled by a PLC controller.

[0044] Construction and usage instructions: Based on the dimensions and location of the construction area of ​​the cold region foundation 15, the ground around the construction site was cleared, and the segmented steel rails 3 were spliced ​​and fixed to the ground by bolt anchoring to ensure that the splicing of steel rails 3 was firmly connected, the sliding track was smooth, and the bolt anchoring depth met the ground load requirements of the cold region. The upper pulley 10 and the lower pulley 11 are assembled at the bottom of the steel support 4. The steel support 4 with the pulleys assembled is placed on the steel rail 3. The sliding performance of the steel support 4 is tested to ensure that it can move freely horizontally along the steel rail 3. The flexible electric heating tube 2 is then laid on the inside of the air film 1 and connected. The air film 1 is detachably fixed to the steel support 4 to complete the assembly of the main body of the device. Install the solar panel 5 on the sunny side of the top of the steel support 4, connect the solar panel 5 and the battery 6 with the wire 12, connect the flexible electric heating tube 2 and the suction and inflation air compressor 7 to the battery 6 through the wire 12, connect the temperature control switch 13 in series with the circuit of the flexible electric heating tube 2, and connect the air pressure control switch 14 to the suction and inflation air compressor 7 to complete the connection of the power supply and control circuit of the device, and check whether all circuit connections are firm. Push the steel support 4 along the steel rail 3 to move the air membrane 1 directly above the foundation construction area. After adjusting it to accurately cover the construction area, use a limiting component to fix the sliding position of the steel support 4 to prevent the device from shifting during construction. Start the suction and inflation air compressor 7. The air pressure control switch 14 automatically detects the air pressure in the air film 1. The air compressor 7 inflates the air film 1 until the air pressure in the air film 1 reaches the preset stable value. The air pressure control switch 14 controls the air compressor 7 to stop inflating. The air film forms a stable closed heat preservation and heat storage space, and the foundation construction work can begin. Temperature control switch 13 monitors the temperature inside air film 1 in real time. When the temperature inside air film 1 is lower than the lower limit of the suitable temperature for foundation construction in the cold region of Northeast China, temperature control switch 13 automatically closes the circuit, and battery 6 supplies power to flexible heating tube 2. Flexible heating tube 2 starts to work and releases heat into air film to achieve heat preservation and heat storage. When the temperature inside air film 1 is higher than the upper limit of the suitable temperature, temperature control switch 13 automatically disconnects the circuit, and flexible heating tube 2 stops working, continuously maintaining the temperature inside air film 1 within the suitable range. During construction, if it is necessary to adjust the coverage position of the device, simply release the limiting fixation of the steel support 4 and push the steel support 4 to slide horizontally along the steel rail 3 to the target position. There is no need to disassemble the entire device, which is suitable for the dynamic adjustment needs of the construction area. After the foundation construction is completed, disconnect all power supply circuits of the device, then start the suction and inflation air compressor 7. The air pressure control switch 14 controls the air compressor 7 to continuously open the suction mode, completely remove the gas in the air film 1, and allow the air film 1 to contract naturally. Remove the retracted air film 1 from the steel support 4, fold the air film 1 and seal it for storage; then remove the upper pulley 10 and the lower pulley 11, unscrew the anchor bolts and disassemble the steel rail 3 in sections, and clean and store the metal parts such as the steel support 4, pulleys, steel rail 3, solar panel 5, and battery 6 separately. All disassembled and preserved device components are transported to subsequent construction sites for reassembly and reuse, thus enabling the device to be reused.

[0045] This invention employs a detachable structural design, enabling rapid assembly and disassembly of the device. After construction, the gas inside the air-supported membrane can be extracted and folded for storage. All components, including the steel rails 3, steel supports 4, and pulleys, can be disassembled, stored separately, and reused, eliminating the need for repeated equipment purchases and significantly reducing the cost of insulation equipment for foundation construction in cold regions. Furthermore, the disassembly and assembly process requires no complex tools, improving construction efficiency. The clean energy power supply system design achieves green construction, reducing energy consumption and environmental pollution. Automated and intelligent control of temperature and air pressure eliminates the need for real-time manual monitoring and adjustment, reducing labor costs while ensuring the insulation and heat storage effect and the safety of the air-supported membrane structure. The device is well-suited to the low-temperature construction environment of Northeast China, effectively solving problems such as soil frost heave, poor concrete curing, and low construction efficiency caused by low temperatures in foundation construction in cold regions. It improves the quality and safety of foundation construction and is applicable to insulation and heat storage operations for various building foundations in Northeast China, exhibiting excellent construction adaptability and economic practicality.

[0046] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0047] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A reusable, heat-storing, air-supported membrane structure for foundation construction in the cold region of Northeast China, characterized in that... include: Air film (1) is used to form a closed heat storage space; A heating component is disposed on the inner side of the air film (1) for supplying heat to the heat storage space; The mobile support assembly includes a steel rail (3) laid on the construction ground and a steel support (4) slidably and detachably mounted on the steel rail (3). The air film (1) is detachably connected to the steel support (4). The steel support (4) slides along the steel rail (3) to move the air film (1) and cover different foundation construction areas. A pressure regulating component is connected to the air film (1) and is used to inflate or evacuate the air film (1); The control components include a temperature control switch (13) for detecting the temperature inside the air film (1) and controlling the start and stop of the heating component, and a pressure control switch (14) for detecting the air pressure inside the air film (1) and controlling the working mode of the air pressure regulating component. A power supply component is used to provide electrical energy to the heating component and the pressure regulating component.

2. The reusable, heat-storing, air-supported membrane structure for foundation construction in the cold region of Northeast China according to claim 1, characterized in that, The rail (3) is a segmented, splicable structure and is fixed to the construction ground by detachable anchors.

3. The reusable, heat-storing, air-supported membrane structure for foundation construction in the cold region of Northeast China, as described in claim 2, is characterized in that... The anchor is an anchor bolt, and the rail (3) has multiple bolt holes (16).

4. The reusable, heat-storing, air-supported membrane structure for foundation construction in the cold region of Northeast China according to claim 1, characterized in that, The bottom of the steel support (4) is provided with an upper pulley (10) and a lower pulley (11), and the rail (3) is provided with a sliding groove that slides with the upper pulley (10) and the lower pulley (11).

5. The reusable, heat-storing, air-supported membrane structure for foundation construction in the cold region of Northeast China according to claim 1, characterized in that, The power supply components include a solar panel (5) and a battery (6). The solar panel (5) converts light energy into electrical energy and stores it in the battery (6). The battery (6) supplies power to the heating component, the air pressure regulating component and the control component through wires (12).

6. The reusable, heat-storing, air-supported membrane structure for foundation construction in the cold region of Northeast China according to claim 1, characterized in that, The heating component is a flexible electric heating tube (2), which is evenly laid on the inner wall and / or bottom of the air film (1) and closely attached to the air film (1). The flexible electric heating tube (2) is detachably connected to the air film (1).

7. The reusable, heat-storing, air-supported membrane structure for foundation construction in the cold region of Northeast China according to claim 1, characterized in that, The air pressure regulating component includes an air compressor (7) that can inhale or inflate air, and an inflation connection pipe (8) and an air delivery pipe (9) connecting the air compressor (7) and the air film (1). Under the control of the air pressure control switch (14), the air compressor (7) selectively inflates or evacuates air from the air film (1).

8. The reusable, heat-storing, air-supported membrane structure for foundation construction in the cold region of Northeast China according to claim 1, characterized in that, A limiting member for fixing the position of the steel support (4) is provided between the steel support (4) and the steel rail (3).

9. A reusable, heat-storing, air-supported membrane structure for foundation construction in the cold region of Northeast China, as described in claim 1, is characterized in that... The temperature control switch is configured to: close the power supply circuit of the heating component when the temperature inside the air film (1) is lower than a preset lower limit, and disconnect the power supply circuit of the heating component when the temperature inside the air film (1) is higher than a preset upper limit.

10. A reusable, heat-storing, air-supported membrane structure for foundation construction in the cold region of Northeast China, as described in claim 1, is characterized in that... The air pressure control switch is configured to: when the air pressure inside the air film (1) is lower than a preset stable value, control the air pressure regulating component to inflate the air film (1); when the air pressure inside the air film (1) is higher than a preset safety value, control the air pressure regulating component to evacuate the air film (1).

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