A double-layer ETFE air pillow membrane structure system based on intelligent monitoring and a construction method thereof

Abstract

A curved grid double-layer ETFE air-cushion membrane structure system based on intelligent monitoring and its construction method are disclosed. The system includes a radial drainage ditch structure, a circumferential drainage ditch structure, an ETFE membrane structure, an inflation system, and a monitoring and control system. The radial and circumferential drainage ditch structures are arranged in a grid pattern and interconnected to form a drainage network; ribs, membrane tension plates, and horizontal supports are provided within the drainage ditches. The ETFE membrane structure comprises multiple membrane structure units, which are fixedly connected to the membrane tension plates via membrane clamps. The inflation system includes a main inflation pipe and inflation branch pipes, with a solenoid valve and inflation hose installed on the main pipe. The monitoring and control system includes sensors, a controller, and an alarm device. The sensors are electrically connected to the controller, and the controller automatically adjusts the air pressure and controls the alarm based on the collected data. This invention achieves integrated membrane structure construction and air pressure control, concealed drainage and air supply pipelines, and high levels of system safety, durability, and intelligence.

Description

Technical Field

[0001] This invention relates to the field of large-span membrane structure roofing technology, specifically to a curved grid double-layer ETFE air cushion membrane structure system based on intelligent monitoring and its construction method. Background Technology

[0002] ETFE (ethylene-tetrafluoroethylene copolymer) air-cushion membrane structures have been widely used in recent years for the roofing systems of large-span public buildings (such as stadiums, cultural centers, and transportation hubs) due to their lightweight, high light transmittance, strong weather resistance, and flexible design. Especially for steel space frame roofs with curved surfaces, double-layer ETFE air-cushion structures can provide excellent thermal insulation performance and a light and airy visual effect while satisfying architectural aesthetics.

[0003] However, the following technical bottlenecks still exist in the construction and operation and maintenance of existing curved grid double-layer ETFE air-cushion membrane structures: First, current construction methods for curved membrane structures typically rely on erecting full-span scaffolding or using large hoisting equipment for high-altitude assembly. Furthermore, due to the narrow working surface and curved shape of the top of the curved steel grid frame, positioning, tensioning, and securing the membrane material to the edge joists are extremely difficult for workers. This not only results in low installation efficiency but also makes the membrane surface prone to wrinkles due to uneven tension, affecting aesthetics and lifespan. The reliability of the clamp connections at the membrane edges is poor, making them susceptible to slippage under long-term wind loads, posing a safety hazard.

[0004] Secondly, drainage for large-span curved roofs is a key technical challenge, with significant conflicts between drainage system design and construction. Traditional drainage ditches are typically installed as a secondary process after the steel grid structure is completed. The connection points with the membrane structure are complex, making sealing difficult. They are prone to breakage or leakage due to deformation of the main structure or construction errors. Furthermore, the installation procedures for the drainage ditches and membrane structure are intertwined, resulting in a long construction period.

[0005] Third, maintaining the internal pressure of the double-layer ETFE membrane requires a complex inflation piping system. Traditionally, the piping is often haphazardly laid on the roof steel structure, resulting in a chaotic and difficult-to-maintain layout. This not only affects the building's aesthetics but also makes it susceptible to damage during construction or infestation by birds and insects. In the event of a leak, the pipeline inspection is extensive and repairs are difficult.

[0006] Fourth, traditional operation and maintenance mainly relies on manual inspections and periodic air replenishment, which cannot detect air pressure fluctuations caused by wind, snow, temperature changes, or accidental punctures in real time, and lacks intelligent monitoring methods during the operation and maintenance phase. Furthermore, because ETFE air cushions are extremely sensitive to changes in internal air pressure, in extreme weather conditions, if timely pressurization to resist wind or depressurization protection is not implemented, membrane tearing or even overall structural failure can easily occur. This lagging management model makes construction costs and quality control extremely difficult, and frequent high-altitude operations pose a serious threat to the safety of maintenance personnel. Summary of the Invention

[0007] The purpose of this invention is to provide a curved grid double-layer ETFE air cushion membrane structure system based on intelligent monitoring, which aims to solve the problems of long drainage paths, easy leakage at connection nodes, weak fixation and easy slippage of membrane material edges in traditional curved large-span membrane structures, messy and easily damaged pipelines of the inflation system and difficult maintenance, as well as the technical problems of traditional membrane structure operation and maintenance relying on manual labor and slow response.

[0008] To achieve the above objectives, the present invention adopts the following technical solution.

[0009] A curved grid double-layer ETFE air-cushion membrane structure system based on intelligent monitoring is installed on the top of the main structure. The top of the main structure is a curved steel grid structure. It also includes radial drainage ditch structures, circumferential drainage ditch structures, ETFE membrane structures, an inflation system, and a monitoring and control system. One set of radial drainage ditch structures is installed radially on the top of the main structure. Several sets of circumferential drainage ditch structures are arranged radially between adjacent radial drainage ditch structures. Both the circumferential and radial drainage ditch structures include ribs, membrane plates, and drainage ditches, and the circumferential and radial drainage ditches are connected. A set of ribs is spaced at the bottom of each drainage ditch, connecting the drainage ditch to the main structure. A groove adapted to the bottom shape of the drainage ditch cross-section is provided on the top of the ribs. The lower part of the drainage ditch is embedded in the drainage ditch. Horizontal supports are spaced between the two side walls of the drainage ditch along its long axis. Two membrane plates are provided in each drainage ditch, located on the upper part of the two side walls of the drainage ditch, close to the side walls. At the upper edge; the ETFE membrane structure includes a set of membrane structure units, and the set of membrane structure units are correspondingly installed above the grid structure formed by the circumferential drainage ditch structure and the radial drainage ditch structure; the membrane structure unit includes a membrane material and a membrane clamp; the membrane material is a double-layer membrane structure, and an air inlet is provided on the membrane material; the membrane clamp is provided along the edge of the membrane material and connects the membrane material to the corresponding tensioning plate; the air inflation system includes an air main pipe and air branch pipes; the air main pipe is installed on the radial drainage ditch structure and / or the circumferential drainage ditch structure, located at... Below the ETFE membrane structure; the main inflation pipe is connected to the inflation pump, and an air pipe switch is provided on the main inflation pipe; the inflation branch pipe is installed on the radial drainage ditch structure, and the inflation branch pipe is connected to the main inflation pipe; both the inflation branch pipe and the main inflation pipe are provided with inflation hoses; holes for the main inflation pipe or the inflation branch pipe are provided on the rib plate; the monitoring and control system includes sensors, controllers and alarm devices; the sensors are installed on the membrane structure unit, and the sensors are electrically connected to the controller; the alarm device is electrically connected to the controller.

[0010] Preferably, the main structure includes steel columns and a steel space frame; the steel columns are supported at the bottom center of the steel space frame; the steel space frame is a curved steel space frame structure, including radial space frame rods and circumferential space frame rods; there is one set of radial space frame rods, which are installed radially on the top of the steel columns; each radial space frame rod is a downward-opening curved rod, and the inner end of the radial space frame rod is fixedly connected to the steel column; there are several sets of circumferential space frame rods, and each set of circumferential space frame rods is arranged radially at intervals between adjacent radial space frame rods; two adjacent sets of circumferential space frame rods are arranged correspondingly.

[0011] Preferably, when the width of the membrane structure unit is less than the spacing between adjacent radial drainage ditch structures and / or the length of the membrane structure unit is less than the spacing between adjacent circumferential drainage ditch structures; a vertical support is provided at the top of the main structure, and the membrane tension plate is connected to the vertical support; the membrane structure unit is connected to the membrane tension plate.

[0012] Preferably, the air pipe switch on the main inflation pipe is a solenoid valve; the solenoid valve is electrically connected to the controller, and the controller automatically controls the opening or closing of the solenoid valve according to the data collected by the sensor to adjust the air pressure inside the membrane structure unit.

[0013] Preferably, the inflation main includes at least an inner inflation main and an outer inflation main; the inner inflation main is installed on the radial drainage ditch structure, near the center of the curved steel grid structure; the outer inflation main is installed on the radial drainage ditch structure, near the edge of the curved steel grid structure; multiple inflation branch pipes are connected at intervals on the inflation main, and the inflation branch pipes connect the inner inflation main and the outer inflation main.

[0014] Preferably, connecting plates are provided at intervals along the long axis at the bottom of the drainage ditch; clamps are provided on the main inflation pipe or the branch inflation pipe at positions corresponding to the connecting plates; the two ends of the clamps are clamped on both sides of the connecting plates and connected to the connecting plates by bolts passing through the two ends of the clamps.

[0015] Preferably, the two ends of the circumferential drainage ditch structure intersect and connect with the adjacent radial drainage ditch structure to form a grid-like drainage network; the connection between the circumferential drainage ditch and the radial drainage ditch is sealed with sealant or by welding to ensure smooth drainage and no leakage.

[0016] Preferably, the membrane clamp is made of aluminum alloy or stainless steel and includes an upper clamping plate and a lower clamping plate; the edge of the membrane material is clamped between the upper clamping plate and the lower clamping plate; the lower clamping plate is fixedly connected to the membrane stretching plate by bolts; the upper surface of the membrane stretching plate is provided with anti-slip texture or grooves to increase the connection friction.

[0017] A construction method for a curved grid double-layer ETFE air cushion membrane structure system based on intelligent monitoring includes the following steps: Step 1, Construction Preparation and Foundation Re-measurement: Re-measure the spatial coordinates of the curved steel space frame structure at the top of the main structure; Step 2: Installation of the radial drainage ditch structure and the circumferential drainage ditch structure; Step 3, Installation of the inflation system: S3.1, Piping installation: The main inflation pipe is arranged on the radial drainage ditch structure and / or the circumferential drainage ditch structure, located below the ETFE membrane structure; the inflation branch pipe is installed on the radial drainage ditch structure and is connected to the main inflation pipe. S3.2, Pipe through rib: The main inflation pipe or the branch inflation pipe passes through the pre-drilled hole in the rib plate; S3.3, Pipeline fixing: Install clamps on the main or branch pipe of the air system at the position corresponding to the connecting plate; clamp the two ends of the clamps on both sides of the connecting plate and lock them in place with bolts passing through the two ends of the clamps and the connecting plate to achieve reliable pipe fixing; S3.4, Valve installation: Install the air pipe switch on the main inflation pipe; S3.5 Connect one end of the air hose to the air main pipe, and leave an air inlet at the other end for connecting the membrane structure unit.

[0018] Step four: Installation of membrane structure units and arrangement of sensors; S4.1 After the air system is installed, the membrane structure unit is installed. First, the membrane material is hoisted to the material stacking area outside the roof, and then the construction personnel move it to the installation area. The membrane material of the membrane structure unit is unfolded, the surface quality of the membrane material is checked, and the air inlet is confirmed to be intact. S4.2, Temporary construction flat straps are arranged on the curved steel grid structure to prevent the membrane material from falling off, and the membrane structure units are transferred and placed on the corresponding grid structure using a tower crane or crane. S4.3 Unfold the membrane material along the slope and stretch it in all directions. Use membrane clamps to fix the membrane material to the stretching plate. The membrane clamps hold the membrane material along the edge to ensure that the edge of the membrane material is flat and wrinkle-free. S4.4, Sensor installation: Sensors are installed on the membrane structure unit, including air pressure sensors, wind speed or wind pressure sensors, rain and snow load sensors and temperature sensors. S4.5, Set monitoring points on the surface of the membrane structure unit; Step 5, Adjust the inflation and testing system in conjunction with the monitoring and control system. S5.1, Initial inflation and airtightness check: Connect the inflation hose to the inflation port on the membrane material; start the inflation system and slowly inflate the membrane structure unit through the main inflation pipe and the branch inflation pipe; S5.2, staged air pressure adjustment, and the three-dimensional coordinates of each monitoring point are measured using three-dimensional scanning technology. The strain value of the membrane material is calculated using the three-dimensional coordinates of each monitoring point. S5.2.1 When the air pressure reaches the preset minimum working pressure value, the controller adjusts the working mode of the inflation system according to the data fed back by the air pressure sensor, and some inflation devices stop working or switch to low frequency operation; S5.2.2, continue inflation to the normal working pressure value; the controller automatically controls the opening or closing of the solenoid valve based on the real-time data of the air pressure sensor; when the air pressure reaches the upper limit of the allowable fluctuation of the normal working pressure value, inflation stops; when the air pressure drops to the lower limit of the allowable fluctuation due to natural leakage, air replenishment is automatically started. S5.2.3, Environmental Adaptive Adjustment: Based on data collected by wind speed or wind pressure sensors, when the wind force reaches a preset threshold, the controller automatically controls the inflation system to pressurize to the internal pressure value under wind and snow conditions to resist wind load; based on temperature sensor data, it automatically releases air appropriately when the ambient temperature rises and automatically replenishes air when the temperature drops to maintain the designed air pressure range. S5.2.4 Alarm Threshold Setting and Testing: Set the overpressure alarm value and underpressure alarm value in the controller; simulate overpressure conditions and test whether the overpressure protection device automatically opens to release pressure; simulate gas leakage conditions and test whether the gas leakage alarm device issues an audible and visual alarm, and verify the function of the alarm reset button. Step Six, Static Observation and Acceptance: After all membrane structure units are installed and inflated for debugging, a stability test is conducted after 24-48 hours of static observation. During this period, the air pressure changes of each air cushion, the drainage smoothness of the drainage ditch, the flatness of the membrane surface, and the tension uniformity are continuously monitored. After all indicators meet the design requirements, the overall system is accepted.

[0019] Preferably, the installation of the radial drainage ditch structure and the circumferential drainage ditch structure in step two is specifically as follows: Step 2.1: Pre-position welding points on the main structure and weld the ribs; Step 2.2: Use a crane or tower crane to lift the processed drainage ditch to the roof installation area; Step 2.3: Workers install drainage ditches using a boom lift. Step 2.4: Install the second drainage ditch using the same construction method; Step 2.5: Complete the installation of the radial drainage ditch structure; Step 2.6: Install the circumferential drainage ditch structure using the same construction method. This completes the construction.

[0020] Compared with the prior art, the present invention has the following features and beneficial effects.

[0021] 1. This invention features an integrated structure and highly efficient drainage. It employs a grid-like arrangement of radial and circumferential drainage ditches, interconnected to form a complete drainage network. The drainage ditches are reliably connected to the main steel grid frame via ribs, ensuring a rational structural stress distribution. The intersection of the circumferential and radial drainage ditches is sealed to ensure smooth drainage without leakage, solving the problems of long drainage paths and water accumulation in large-span curved membrane structures. Simultaneously, continuous membrane tension plates are installed on both sides of the drainage ditches. The upper surface of these plates has anti-slip textures or grooves and is bolted to the lower clamping plate of the membrane clamps, significantly enhancing the gripping force on the membrane material edges, preventing membrane slippage, and improving the installation accuracy and durability of the membrane units. The membrane clamps are made of aluminum alloy or stainless steel, offering good corrosion resistance and extending the service life of the membrane structure.

[0022] 2. This invention integrates a membrane plate with an anti-slip structure onto the drainage ditch, along with specialized membrane clamps, to improve the gripping force of the membrane material edges and the flatness of the installation. Simultaneously, the main and branch inflation pipes of the curved grid double-layer ETFE air-cushion membrane structure system are installed within the drainage ditch structure, located below the ETFE membrane structure. This conceals the piping, improving the integration and ease of installation of the inflation piping. Pre-drilled holes on the ribs allow for pipe insertion, which is then secured to the connecting plate at the bottom of the drainage ditch using clamps, ensuring a secure installation and facilitating maintenance. The inner and outer ring inflation main pipes are arranged in a graded manner to ensure uniform air pressure over long distances. Embedded sensors are installed on the membrane units to achieve real-time monitoring of air pressure after the membrane material is in place. During phased inflation and commissioning, the controller automatically adjusts the start and stop of the inflation equipment based on sensor feedback, promptly detecting and addressing leaks, avoiding membrane wrinkles or damage caused by uncontrollable air pressure in traditional construction methods.

[0023] 3. The system of this invention can perform intelligent air pressure regulation and adaptive adjustment. The controller automatically controls the opening and closing of the solenoid valve based on data collected by the air pressure sensor, wind speed sensor, and temperature sensor, achieving adaptive adjustment of normal operating air pressure, pressurization under high wind conditions, and depressurization under high temperature conditions. The air pressure is always maintained within a set threshold range, ensuring membrane stiffness while preventing overpressure damage. The system is equipped with an alarm device that automatically alarms and takes protective measures when the air pressure is abnormal, achieving unattended intelligent operation and maintenance, significantly reducing the cost of manual inspection, and solving the problems of reliance on manual labor and delayed response in traditional membrane structure operation and maintenance. Attached Figure Description

[0024] The present invention will now be described in further detail with reference to the accompanying drawings.

[0025] Figure 1 This is a schematic diagram of the main structure in this invention.

[0026] Figure 2 This is a layout diagram of the inflation system in this invention.

[0027] Figure 3 This is a schematic diagram of the structure in which the inflation main pipe is located at the bottom of the drainage ditch in this invention.

[0028] Figure 4 This is a schematic diagram of the connection structure between the inflatable hose and the membrane structure unit in this invention.

[0029] Figure 5 This is a schematic diagram of the structure of the membrane material set on the steel grid before unfolding in this invention.

[0030] Figure 6 This is a schematic diagram of the structure of the membrane material after it has been partially unfolded and placed on the steel mesh frame in this invention.

[0031] Figure 7This is a schematic diagram of the structure of the fully unfolded membrane material set on the steel grid frame in this invention.

[0032] Figure 8 This is a schematic diagram of the drainage ditch structure installed on the main structure in this invention.

[0033] Figure 9 yes Figure 8 Exploded view of the structure.

[0034] Figure 10 This is an exploded view of the drainage ditch structure in this invention when the rib does not have an air-filled main pipe.

[0035] Figure 11 This is a schematic diagram of the connection structure between the ETFE membrane structure and the membrane plate in this invention.

[0036] Figure 12 This is a schematic diagram of the structure in this invention where cables are installed on the membrane material.

[0037] Figure 13 This is a schematic diagram of the connection structure between the membrane structure unit and the vertical support in this invention.

[0038] Figure 14 This is a schematic diagram of the membrane clamp in this invention.

[0039] Figure 15 This is a schematic diagram of the ETFE membrane structure connected between adjacent steel grid rods of the main structure in this invention.

[0040] Figure 16 This is a diagram showing the layout of the monitoring points in this invention.

[0041] Reference numerals in the attached drawings: 1 - Main structure, 1.1 - Steel column, 1.2 - Steel space frame, 1.2.1 - Radial space frame rod, 1.2.2 - Circumferential space frame rod, 2 - Radial drainage ditch structure, 3 - Circumferential drainage ditch structure, 4 - ETFE membrane structure, 4.1 - Membrane structure unit, 4.1.1 - Membrane material, 4.1.2 - Membrane clamp, 4.1.2a - Upper clamp, 4.1.2b - Lower clamp, 5 - Groove, 6 - Horizontal support, 7 - Inflation port, 8 - Main inflation pipe, 9 - Inflation branch pipe, 11 - Air pipe switch, 12 - Inflation hose, 13 - Hole, 14 - Sensor, 15 - Vertical support, 16 - Connecting plate, 17 - Hoop, 18 - Bird guard, 19 - Cable, 20 - Locking sleeve, 23a - Rib plate, 23b - Membrane tension plate, 23c - Drainage ditch. Detailed Implementation

[0042] This intelligent monitoring-based curved grid double-layer ETFE air-cushion membrane structure system is installed on top of the main structure 1. The top of the main structure 1 is a curved steel grid structure. It also includes a radial drainage ditch structure 2, a circumferential drainage ditch structure 3, an ETFE membrane structure 4, an inflation system, and a monitoring and control system. There is one set of radial drainage ditch structures 2, which are installed radially on top of the main structure 1. There are several sets of circumferential drainage ditch structures 3, each set of which is arranged radially between adjacent radial drainage ditch structures 2. Both the circumferential drainage ditch structure 3 and the radial drainage ditch structure 2 include ribs 23a, membrane plates 23b, and drainage ditches 23c, and the circumferential drainage ditch 23c and the radial drainage ditch 23c are... Interconnected; a set of ribs 23a are spaced at the bottom of each drainage ditch 23c, connecting the drainage ditch 23c to the main structure 1; a groove 5 adapted to the bottom shape of the drainage ditch 23c is provided on the top of the ribs 23a; the lower part of the drainage ditch 23c is embedded in the drainage ditch 23c; horizontal supports 6 are spaced between the two side walls of the drainage ditch 23c along the long axis of the drainage ditch 23c; two membrane plates 23b are provided in each drainage ditch 23c, and are respectively located on the upper part of the two side walls of the drainage ditch 23c, near the upper edge of the side walls; the membrane plates 23b are long strips and are arranged along the long axis of the drainage ditch 23c; the ETFE membrane structure 4 includes a set of membrane structure units 4. 1. A set of membrane structure units 4.1 are correspondingly installed above the grid structure formed by the circumferential drainage ditch structure 3 and the radial drainage ditch structure 2; the membrane structure unit 4.1 includes a membrane material 4.1.1 and a membrane clamp 4.1.2; the membrane material 4.1.1 is a double-layer membrane structure, and an air inlet 7 is provided on the membrane material 4.1.1; the membrane clamp 4.1.2 is provided along the edge of the membrane material 4.1.1 and connects the membrane material 4.1.1 to the corresponding membrane plate 23b; a locking sleeve 20 is provided on the membrane material 4.1.1 at the position corresponding to the membrane clamp 4.1.2, and a cable 19 is installed in the locking sleeve 20; the membrane clamp 4.1.2 is clamped on the cable 19; the inflation system includes an inflation main pipe 8 and an inflation branch pipe 9; The main inflation pipe 8 is installed on the radial drainage ditch structure 2 and / or the circumferential drainage ditch structure 3, located below the ETFE membrane structure 4; the main inflation pipe 8 is connected to an air pump, and an air pipe switch 11 is provided on the main inflation pipe 8; the inflation branch pipe 9 is installed on the radial drainage ditch structure 2, and the inflation branch pipe 9 is connected to the main inflation pipe 8; both the inflation branch pipe 9 and the main inflation pipe 8 are provided with inflation hoses 12; a hole 13 is provided on the rib plate 23a to pass through the main inflation pipe 8 or the inflation branch pipe 9; the monitoring and control system includes a sensor 14, a controller, and an alarm device; the sensor 14 is installed on the membrane structure unit 4.1, and the sensor 14 is electrically connected to the controller; the alarm device is electrically connected to the controller.

[0043] In this embodiment, the main structure 1 includes a steel column 1.1 and a steel space frame 1.2; the steel column 1.1 is supported at the bottom center of the steel space frame 1.2; the steel space frame 1.2 is a curved steel space frame structure, including radial space frame rods 1.2.1 and circumferential space frame rods 1.2.2; there is one set of radial space frame rods 1.2.1, which are radially installed on the top of the steel column 1.1; each radial space frame rod 1.2.1 is a downward-opening curved rod, and the inner end of the radial space frame rod 1.2.1 is fixedly connected to the steel column 1.1; there are several sets of circumferential space frame rods 1.2.2, and each set of circumferential space frame rods 1.2.2 is arranged radially at intervals between adjacent radial space frame rods 1.2.1; two adjacent sets of circumferential space frame rods 1.2.2 are arranged correspondingly.

[0044] In this embodiment, when the width of the membrane structure unit 4.1 is less than the spacing between adjacent radial drainage ditch structures 2 and / or the length of the membrane structure unit 4.1 is less than the spacing between adjacent circumferential drainage ditch structures 3; a vertical support 15 is provided on the top of the main structure 1, and the membrane plate 23b is connected to the vertical support 15; the membrane structure unit 4.1 is connected to the membrane plate 23b.

[0045] In this embodiment, the air pipe switch 11 on the inflation main pipe 8 is a solenoid valve; the solenoid valve is electrically connected to the controller, and the controller automatically controls the opening or closing of the solenoid valve according to the data collected by the sensor 14 to adjust the air pressure inside the membrane structure unit 4.1.

[0046] In this embodiment, the inflation main pipe 8 includes at least an inner inflation main pipe and an outer inflation main pipe; the inner inflation main pipe is installed on the radial drainage ditch structure 2, near the center of the curved steel grid structure; the outer inflation main pipe is installed on the radial drainage ditch structure 2, near the edge of the curved steel grid structure; multiple inflation branch pipes 9 are connected at intervals on the inflation main pipe 8, and the inflation branch pipes 9 connect the inner inflation main pipe and the outer inflation main pipe.

[0047] In this embodiment, connecting plates 16 are provided at intervals along the long axis at the bottom of the drainage ditch 23c; clamps 17 are provided on the main inflation pipe 8 or the branch inflation pipe 9 at positions corresponding to the connecting plates 16; the two ends of the clamps 17 are clamped on both sides of the connecting plates 16 and are connected to the connecting plates 16 by bolts passing through the two ends of the clamps 17.

[0048] In this embodiment, the two ends of the circumferential drainage ditch structure 3 intersect and connect with the adjacent radial drainage ditch structure 2 to form a grid-like drainage network; the connection between the circumferential drainage ditch and the radial drainage ditch is sealed with sealant or by welding to ensure smooth drainage and no leakage.

[0049] In this embodiment, the membrane clamp 4.1.2 is made of aluminum alloy or stainless steel and includes an upper clamping plate 4.1.2a and a lower clamping plate 4.1.2b; the edge of the membrane material 4.1.1 is clamped between the upper clamping plate 4.1.2a and the lower clamping plate 4.1.2b; the lower clamping plate 4.1.2b is fixedly connected to the membrane stretching plate 23b by bolts; the upper surface of the membrane stretching plate 23b is provided with anti-slip textures or grooves to increase the connection friction.

[0050] In this embodiment, the monitoring and control system further includes a human-machine interface, which is communicatively connected to the controller and used to display the air pressure value of each membrane structure unit 4.1, sensor 14, system operating parameters, and alarm records in real time. When the air pressure of the membrane structure unit 4.1 continues to drop (e.g., due to membrane material damage), an alarm is issued to detect air leakage; when the air pressure is too high, automatic pressure relief is provided to prevent tearing of the membrane material of the membrane structure unit 4.1, thus providing overpressure protection.

[0051] The monitoring and control system also includes a remote communication module, which is connected to the controller and is used to send alarm signals and operating data to a remote monitoring center or mobile terminal via a wireless network. The controller receives signals from the sensor 14 and automatically controls the start and stop of the inflation system or the opening and closing of the air valve according to preset logic (such as pressure threshold).

[0052] The intelligent monitoring-based curved grid double-layer ETFE air cushion membrane structure system in this embodiment forms a complete "stress-drainage-air supply" system through the connection of physical structure and pipelines.

[0053] The circumferential and radial drainage ditches are interconnected, forming a unified drainage network. Rainwater falling onto the ETFE membrane flows into the surrounding drainage ditches, eventually converging into the radial main ditch and then draining to the ground through a pre-installed rainwater system in the main structure. Simultaneously, rib 23a supports the drainage ditch 23c via its top groove 5. The bottom of rib 23a is fixedly connected to the main structure 1, a crucial connection for transferring the load of the drainage system to the main load-bearing structure.

[0054] The membrane clamp 4.1.2 and the membrane tensioning plate 23b connect the ETFE membrane structure 4 to the drainage ditch structure. This connection not only fixes the position of the membrane unit but also ensures the sealing, so that the entire membrane surface is stretched within the grid formed by the drainage ditch.

[0055] The inflation branch pipe 9 is installed on the radial drainage ditch structure and is connected to the inflation main pipe 8. That is to say, the path of compressed air is: inflation equipment → inflation main pipe 8 → inflation branch pipe 9.

[0056] Connection of the inflation hose 12 to the membrane unit: Both the main inflation pipe 8 and the branch inflation pipe 9 are equipped with inflation hoses 12. This hose extends from inside the drainage ditch and connects directly to the inflation port on the membrane material. The inflation hose 12 at the end of the main inflation pipe 8 connects the main inflation pipe 8 to the inflation pump. In this way, air enters the cavity between the double membrane layers through the combination of the rigid pipe (main pipe / branch pipe) and the hose, forming a stable air cushion.

[0057] Sensor 14 transmits signals to the controller via cable or wireless transmission.

[0058] The controller is connected via cable to the air pipe switch (solenoid valve) on the inflation main pipe 8 and the motor of the inflation pump to achieve automatic start / stop and on / off adjustment. The construction method for this intelligent monitoring-based curved grid double-layer ETFE air cushion membrane structure system includes the following steps: Step 1, Construction Preparation and Foundation Re-measurement: Re-measure the spatial coordinates of the curved steel space frame structure at the top of the main structure 1, and confirm that the installation accuracy of the radial space frame rod 1.2.1 and the circumferential space frame rod 1.2.2 meets the design requirements; lay out and locate the installation position of the rib plate 23a, and clean the welds and debris at the connection points; conduct visual inspection and specification verification of the ETFE membrane material 4.1.1, membrane clamps 4.1.2, drainage ditch components and inflation system equipment that have arrived on site, and ensure that the membrane material is free from damage and wrinkles and that the inflation equipment is operating normally; Step 2, installation of radial drainage ditch structure 2 and circumferential drainage ditch structure 3; during the prefabrication of drainage ditch 23c, connecting plates 16 are pre-embedded or installed at intervals along the long axis at the bottom of drainage ditch 23c for fixing the subsequent air-filled pipes. The installation of radial drainage ditch structure 2 and circumferential drainage ditch structure 3 is as follows: Step 2.1: Position the welding points on the main structure 1 in advance and weld the rib plate 23a; Step 2.2: Use a crane or tower crane to lift the processed drainage ditch 23c to the roof installation area; Step 2.3: Workers install drainage ditch 23c using a boom lift. Step 2.4: Install the second drainage ditch 23c using the same construction method; Step 2.5: Complete the installation of radial drainage ditch structure 2; Step 2.6: Install the circumferential drainage ditch structure 3 using the same construction method. This completes the construction.

[0059] Step 3, Installation of the inflation system: S3.1, Pipe installation: The main inflation pipe 8 is arranged on the radial drainage ditch structure 2 and / or the circumferential drainage ditch structure 3, located below the ETFE membrane structure 4; the inflation branch pipe 9 is installed on the radial drainage ditch structure 2, and the inflation branch pipe 9 is connected to the main inflation pipe 8. S3.2, Pipe through rib: The main inflation pipe 8 or the branch inflation pipe 9 passes through the hole 13 reserved on the rib plate 23a. S3.3, Pipe fixing: Install clamps 17 on the main inflation pipe 8 or the branch inflation pipe 9 at the position corresponding to the connecting plate 16; clamp the two ends of the clamps 17 on both sides of the connecting plate 16, and lock them with bolts passing through the two ends of the clamps 17 and the connecting plate 16 to achieve reliable pipe fixing. S3.4, Valve installation: Install the air pipe switch 11 on the main air supply pipe 8; S3.5 Connect one end of the air hose 12 to the air main pipe 8, and leave the other end with an air inlet 7 for connecting the membrane structure unit.

[0060] Step 4: Installation of membrane structure unit 4.1 and arrangement of sensor 14; S4.1 After the air system is installed, start installing membrane structure unit 4.1. First, hoist the membrane material to the material stacking area outside the roof, and then the construction personnel will move it to the installation area. Unfold the membrane material 4.1.1 of membrane structure unit 4.1, check the surface quality of membrane material 4.1.1, and confirm that the air inlet 7 is intact. S4.2, Temporary construction straps are arranged on the curved steel grid structure to prevent the membrane material from falling off, and the membrane structure unit 4.1 is transferred and placed on the corresponding grid structure using a tower crane or crane. S4.3, unfold the membrane material 4.1.1 along the slope and stretch the membrane material in all directions. Use membrane clamps 4.1.2 to fix the membrane material 4.1.1 to the stretching plate 23b. The membrane clamps 4.1.2 clamp along the edge of the membrane material 4.1.1 to ensure that the edge of the membrane material 4.1.1 is flat and without wrinkles. S4.4 Sensor Installation: Sensors 14 are installed on membrane structure unit 4.1. Sensors 14 include air pressure sensors, wind speed or wind pressure sensors, rain and snow load sensors, and temperature sensors. The air pressure sensors are installed inside and outside each membrane structure unit 4.1, and the air pressure sensors 14 inside and outside the membrane structure unit 4.1 are arranged correspondingly to monitor the air pressure inside the membrane in real time. The wind speed or wind pressure sensors are installed outside the air cushion membrane to monitor changes in ambient wind speed and wind pressure, so that the system can automatically adjust the internal pressure according to the external wind load (increase pressure to prevent deformation when the wind is strong, and reduce pressure to save energy when the wind is weak). The rain and snow load sensor is installed on the top of the ETFE membrane structure 4 to monitor rainfall or snow accumulation and can be linked to the control strategy. The temperature sensor is installed on the top of the ETFE membrane structure 4 to monitor the ambient temperature and membrane surface temperature. Bird guards 18 are provided at the edges of the membrane structure unit 4.1. S4.5, Set monitoring points on the surface of membrane structure unit 4.1; Step 5, Adjust the inflation and monitoring control system in conjunction with the system. S5.1, Initial inflation and airtightness check: Connect the inflation hose 12 to the inflation port 7 on the membrane material 4.1.1; start the inflation system and slowly inflate the membrane structure unit 4.1 through the main inflation pipe 8 and the branch inflation pipe 9; during inflation, use soapy water or a special leak detector to check the airtightness of the connection between the membrane clamp 4.1.2 and the membrane plate 23b, and the connection between the inflation port 7; S5.2, staged air pressure adjustment, and use three-dimensional scanning technology to measure the three-dimensional coordinates of each monitoring point, and use the three-dimensional coordinates of each monitoring point to calculate the strain value of the membrane material 4.1.1: After the inflation system starts working, the initial internal pressure of the air cushion increases from 0; S5.2.1 When the air pressure reaches the preset minimum working pressure value, such as 200Pa, the controller adjusts the working mode of the inflation system according to the data fed back by sensor 14, and some inflation devices stop working or switch to low frequency operation. S5.2.2 Continue inflation to the normal working pressure value, such as 300Pa. The controller automatically controls the opening or closing of the solenoid valve based on the real-time data of the air pressure sensor. When the air pressure reaches the upper limit of the allowable fluctuation of the normal working pressure value, such as 320Pa, inflation stops. When the air pressure drops to the lower limit of the allowable fluctuation due to natural leakage, such as 280Pa, air replenishment is automatically started. S5.2.3, Environmental Adaptive Adjustment: Based on the data collected by the wind speed sensor, when the wind force reaches the preset threshold, the controller automatically controls the inflation system to pressurize to the internal pressure value under wind and snow conditions, such as 500Pa, to resist wind load; based on the temperature sensor data, it automatically releases air appropriately when the ambient temperature rises and automatically replenishes air when the temperature drops to maintain the designed air pressure range. S5.2.4 Alarm Threshold Setting and Testing: Set the overpressure alarm value and underpressure alarm value in the controller; simulate overpressure conditions and test whether the overpressure protection device automatically opens to release pressure; simulate gas leakage conditions and test whether the gas leakage alarm device issues an audible and visual alarm, and verify the function of the alarm reset button. Step 6, Static Observation and Acceptance: After all membrane structure units 4.1 are installed and inflated for debugging, they are left to stand for 24-48 hours for stability testing; during this period, the air pressure changes of each air cushion, the drainage smoothness of the drainage ditch, the flatness of the membrane surface and the tension uniformity are continuously monitored; after all indicators meet the design requirements, the overall system is accepted.

[0061] In this embodiment, S5.2 calculates the strain value of the membrane material 4.1.1 using the three-dimensional coordinates of each monitoring point. The specific calculation method is as follows: a planar coordinate system is established with a certain monitoring point as the origin, such as monitoring point B; each monitoring point is distributed in a coordinate system with monitoring point B as the origin, such as... Figure 16Monitoring points A, C, D, E, etc.; coordinate monitoring points are set up radially near each monitoring point, such as points d1 and d2 near monitoring point D); the initial time interval L0 between d1 and d2 before inflation and the distance L1 between d1 and d2 after inflation are measured respectively, and the difference ΔL between L1 and L0 is calculated. Based on this, the radial strain at point D can be obtained as: ε dr =(L1-L0) / L0= ΔL / L0; Similarly, coordinate monitoring points (such as points c1 and c2 near point D) are set up along the tangential direction near point D. The initial time interval S0 between c1 and c2 before inflation and the distance S1 between points d1 and d2 after inflation are measured respectively. The difference ΔS between S1 and S0 is calculated. Based on this, the tangential strain at point D can be obtained as follows: ε dt =(S1-S0) / S0= ΔS / S0.

[0062] Assuming the membrane material is linearly elastic and isotropic, and the membrane surface is under biaxial tension, the stress at point D is calculated using the biaxial elastic constitutive equation, as follows: σ dr =E(ε dr +με dt ) / (1-μ 2 ); σ dt =E(ε dt +με dr ) / (1-μ 2 ) ; E is the elastic modulus of the membrane material, and μ is Poisson's ratio; The stress vector at point D is: σ d ={ σ dr , σ dt The stress value is || σ d The stress vectors and stress values ​​at other monitoring points A, C, D, and E are calculated using the same method. Since point B is located at the origin, measurements can be taken in two mutually perpendicular directions.

[0063] Then, a dataset is constructed by combining the measured data from various sensors. This dataset contains data on wind pressure, temperature, rain and snow load, internal membrane pressure, and stress at each monitoring point on the membrane surface at the same time. This dataset can be used to train a BP neural network model, using wind pressure, temperature, rain and snow load, and internal membrane pressure as input parameters and stress at each monitoring point on the membrane surface as output parameters. After training, the BP neural network can accurately predict the stress value at any point on the membrane surface based on the real-time monitored wind pressure, temperature, rain and snow load, and internal membrane pressure. Finally, based on the predicted stress value at the corresponding point on the membrane surface, this stress value is compared with the yield stress of the ETFE membrane material to determine whether the stress at that point on the membrane surface is within a safe range. In this embodiment, the first yield stress of the ETFE membrane material is 15.7 MPa. After the ETFE membrane material exceeds the first yield point, the deformation increases rapidly due to a significant decrease in the elastic modulus. The safe range for the ETFE membrane material is 0~15.7 MPa. Therefore, if the stress at the monitoring point on the membrane surface is less than the yield stress, it is within a safe range. Simultaneously, the controller controls the opening and closing of the air pump and the air pipe switch 11 based on the safety signal determined by the BP neural network model, thereby achieving intelligent regulation and adaptive adjustment of the air pressure inside the membrane.

[0064] The above embodiments are not exhaustive examples of specific implementation methods, and other embodiments may also exist. The purpose of the above embodiments is to illustrate the present invention, rather than to limit the scope of protection of the present invention. All applications derived from simple variations of the present invention fall within the scope of protection of the present invention.

Claims

1. A curved grid double-layer ETFE air cushion membrane structure system based on intelligent monitoring, set on top of the main structure (1); the top of the main structure (1) is a curved steel grid structure; characterized in that: It also includes a radial drainage ditch structure (2), a circumferential drainage ditch structure (3), an ETFE membrane structure (4), an inflation system, and a monitoring and control system; there is one set of radial drainage ditch structures (2), which are installed radially on the top of the main structure (1); there are several sets of circumferential drainage ditch structures (3), each set of circumferential drainage ditch structures (3) is arranged radially between adjacent radial drainage ditch structures (2); both the circumferential drainage ditch structure (3) and the radial drainage ditch structure (2) include ribs (23a), membrane plates (23b), and drainage ditches (23c), and the circumferential drainage ditches (23c) are connected to the radial drainage ditches (23c); the ribs (23a) are located in each drainage ditch (23c) A set of drainage ditches (23c) is provided at intervals at the bottom to connect the drainage ditch (23c) to the main structure (1); a groove (5) adapted to the bottom shape of the drainage ditch (23c) is provided on the top of the rib (23a); the lower part of the drainage ditch (23c) is embedded in the drainage ditch (23c); horizontal supports (6) are provided at intervals between the two side walls of the drainage ditch (23c) along the long axis of the drainage ditch (23c); two membrane plates (23b) are provided in each drainage ditch (23c), and are respectively located on the upper part of the two side walls of the drainage ditch (23c) and near the upper edge of the side wall; the ETFE membrane structure (4) includes a set of membrane structure units (4.1), and a set of membrane structure units (4.1) corresponds to Installed above a grid structure formed by a circumferential drainage ditch structure (3) and a radial drainage ditch structure (2); the membrane structure unit (4.1) includes a membrane material (4.1.1) and a membrane clamp (4.1.2); the membrane material (4.1.1) is a double-layer membrane structure, and an air inlet (7) is provided on the membrane material (4.1.1); the membrane clamp (4.1.2) is provided along the edge of the membrane material (4.1.1) and connects the membrane material (4.1.1) to the corresponding membrane plate (23b); the air inflation system includes an air main pipe (8) and an air branch pipe (9); the air main pipe (8) is installed on the radial drainage ditch structure (2) and / or the circumferential drainage ditch structure (3), located on the ETFE membrane structure (4.1.2). Below the membrane structure unit (4.1); the main inflation pipe (8) is connected to the inflation pump, and an air pipe switch (11) is provided on the main inflation pipe (8); the inflation branch pipe (9) is installed on the radial drainage ditch structure (2), and the inflation branch pipe (9) is connected to the main inflation pipe (8); both the inflation branch pipe (9) and the main inflation pipe (8) are provided with inflation hoses (12); a hole (13) is provided on the rib plate (23a) for passing through the main inflation pipe (8) or the inflation branch pipe (9); the monitoring and control system includes a sensor (14), a controller and an alarm device; the sensor (14) is installed on the membrane structure unit (4.1), and the sensor (14) is electrically connected to the controller; the alarm device is electrically connected to the controller.

2. The curved mesh double-layer ETFE air cushion membrane structure system based on intelligent monitoring according to claim 1, characterized in that: The main structure (1) includes steel columns (1.1) and a steel space frame (1.2); the steel columns (1.1) are supported at the bottom center of the steel space frame (1.2); the steel space frame (1.2) is a curved steel space frame structure, including radial space frame rods (1.2.1) and circumferential space frame rods (1.2.2); the radial space frame rods (1.2.1) 1.2.1) There is a set of radially installed on the top of the steel column (1.1); each radial space frame rod (1.2.1) is a curved rod with an opening facing downwards, and the inner end of the radial space frame rod (1.2.1) is fixedly connected to the steel column (1.1); there are several sets of circumferential space frame rods (1.2.2), and each set of circumferential space frame rods (1.2.2) is arranged radially at intervals between adjacent radial space frame rods (1.2.1); two adjacent sets of circumferential space frame rods (1.2.2) are arranged correspondingly.

3. The curved mesh double-layer ETFE air cushion membrane structure system based on intelligent monitoring according to claim 1, characterized in that: When the width of the membrane structure unit (4.1) is less than the spacing between adjacent radial drainage ditch structures (2) and / or the length of the membrane structure unit (4.1) is less than the spacing between adjacent circumferential drainage ditch structures (3); a vertical support (15) is provided on the top of the main structure (1), and the membrane plate (23b) is connected to the vertical support (15); the membrane structure unit (4.1) is connected to the membrane plate (23b).

4. The curved mesh double-layer ETFE air cushion membrane structure system based on intelligent monitoring according to claim 1, characterized in that: The air pipe switch (11) on the inflation main pipe (8) is a solenoid valve; the solenoid valve is electrically connected to the controller, and the controller automatically controls the opening or closing of the solenoid valve according to the data collected by the sensor (14) to adjust the air pressure inside the membrane structure unit (4.1).

5. The curved mesh double-layer ETFE air cushion membrane structure system based on intelligent monitoring according to claim 1, characterized in that: The inflation main (8) includes at least an inner inflation main and an outer inflation main; the inner inflation main is installed on the radial drainage ditch structure (2) near the center of the curved steel grid structure; the outer inflation main is installed on the radial drainage ditch structure (2) near the edge of the curved steel grid structure; multiple inflation branch pipes (9) are connected at intervals on the inflation main (8), and the inflation branch pipes (9) connect the inner inflation main and the outer inflation main.

6. The curved mesh double-layer ETFE air cushion membrane structure system based on intelligent monitoring according to claim 1, characterized in that: The bottom of the drainage ditch (23c) is provided with connecting plates (16) spaced apart along the long axis; the inflation main pipe (8) or inflation branch pipe (9) is provided with clamps (17) at the positions corresponding to the connecting plates (16); the two ends of the clamps (17) are clamped on both sides of the connecting plates (16) and connected to the connecting plates (16) by bolts passing through the two ends of the clamps (17).

7. The curved mesh double-layer ETFE air cushion membrane structure system based on intelligent monitoring according to claim 1, characterized in that: The two ends of the circumferential drainage ditch structure (3) intersect and connect with the adjacent radial drainage ditch structure (2) to form a grid-like drainage network; the connection between the circumferential drainage ditch and the radial drainage ditch is sealed with sealant or by welding to ensure smooth drainage and no leakage.

8. The curved mesh double-layer ETFE air cushion membrane structure system based on intelligent monitoring according to claim 1, characterized in that: The membrane clamp (4.1.2) is made of aluminum alloy or stainless steel and includes an upper clamping plate (4.1.2a) and a lower clamping plate (4.1.2b). The edge of the membrane material (4.1.1) is clamped between the upper clamping plate (4.1.2a) and the lower clamping plate (4.1.2b). The lower clamping plate (4.1.2b) is fixedly connected to the membrane stretching plate (23b) by bolts. The upper surface of the membrane stretching plate (23b) is provided with anti-slip textures or grooves to increase the connection friction.

9. A construction method for a curved grid double-layer ETFE air cushion membrane structure system according to any one of claims 1 to 8, characterized in that, Includes the following steps: Step 1, Construction preparation and foundation re-measurement: Re-measure the spatial coordinates of the main structure (1) the top curved steel space frame structure; Step 2, installation of the radial drainage ditch structure (2) and the circumferential drainage ditch structure (3); Step 3, Installation of the inflation system: S3.1, Pipe installation: The main inflation pipe (8) is arranged on the radial drainage ditch structure (2) and / or the circumferential drainage ditch structure (3), located below the ETFE membrane structure (4); the inflation branch pipe (9) is installed on the radial drainage ditch structure (2), and the inflation branch pipe (9) is connected to the main inflation pipe (8); S3.2, Pipe through rib: The main inflation pipe (8) or the branch inflation pipe (9) is passed through the hole (13) reserved on the rib plate (23a). S3.3, Pipe fixing: Install clamps (17) on the main inflation pipe (8) or the branch inflation pipe (9) at the position corresponding to the connecting plate (16); clamp the two ends of the clamps (17) on both sides of the connecting plate (16), and lock them with bolts passing through the two ends of the clamps (17) and the connecting plate (16) to achieve reliable pipe fixing; S3.4, Valve installation: Install the air pipe switch (11) on the main air supply pipe (8); S3.5 Connect one end of the air hose (12) to the air main pipe (8), and reserve the other end for connecting the air inlet (7) of the membrane structure unit. Step 4, Installation of membrane structure unit (4.1) and arrangement of sensor (14); S4.1 After the air system is installed, start installing the membrane structure unit (4.1). First, hoist the membrane material to the material stacking area outside the roof, and then the construction personnel move it to the installation area. Unfold the membrane material (4.1.1) of the membrane structure unit (4.1), check the surface quality of the membrane material (4.1.1), and confirm that the air inlet (7) is intact. S4.2, Temporary construction flat strips are arranged on the curved steel grid structure to prevent the membrane material from falling off, and the membrane structure unit (4.1) is transferred and placed on the corresponding grid structure using a tower crane or crane. S4.3, unfold the membrane material (4.1.1) along the slope, stretch the membrane material in all directions, and use membrane clamps (4.1.2) to fix the membrane material (4.1.1) to the stretching plate (23b). The membrane clamps (4.1.2) are positioned along the membrane material ( 4.1.1) edge clamping to ensure that the edges of the membrane material (4.1.1) are flat and wrinkle-free; S4.4, Sensor installation: Sensors (14) are installed on the membrane structure unit (4.1). Sensors (14) include air pressure sensors, wind speed or wind pressure sensors, rain and snow load sensors and temperature sensors. S4.5, monitoring points are set on the surface of the membrane structure unit (4.1); Step 5: Inflation adjustment and monitoring control system linkage adjustment; S5.1, Initial inflation and airtightness check: Connect the inflation hose (12) to the inflation port (7) on the membrane material (4.1.1); start the inflation system and slowly inflate the membrane structure unit (4.1) through the main inflation pipe (8) and the branch inflation pipe (9); S5.2, staged air pressure regulation, and the use of three-dimensional scanning technology to determine the three-dimensional coordinates of each monitoring point, and the calculation of membrane material using the three-dimensional coordinates of each monitoring point ( The strain value of 4.1.1); S5.2.1 When the air pressure reaches the preset minimum working pressure value, the controller adjusts the working mode of the inflation system according to the data fed back by the air pressure sensor, and some inflation devices stop working or switch to low frequency operation; S5.2.2, continue inflation to the normal working pressure value; the controller automatically controls the opening or closing of the solenoid valve based on the real-time data of the air pressure sensor; when the air pressure reaches the upper limit of the allowable fluctuation of the normal working pressure value, inflation stops; when the air pressure drops to the lower limit of the allowable fluctuation due to natural leakage, air replenishment is automatically started. S5.2.3, Environmental Adaptive Adjustment: Based on data collected by wind speed or wind pressure sensors, when the wind force reaches a preset threshold, the controller automatically controls the inflation system to pressurize to the internal pressure value under wind and snow conditions to resist wind load; based on temperature sensor data, it automatically releases air appropriately when the ambient temperature rises and automatically replenishes air when the temperature drops to maintain the designed air pressure range. S5.3 Alarm Threshold Setting and Testing: Set the overpressure alarm value and underpressure alarm value in the controller; simulate overpressure conditions and test whether the overpressure protection device automatically opens to release pressure; simulate gas leakage conditions and test whether the gas leakage alarm device issues an audible and visual alarm, and verify the function of the alarm reset button. Step 6, Static Observation and Acceptance: After all membrane structure units (4.1) are installed and inflated for debugging, they are left to stand for 24-48 hours for stability testing; during this period, the air pressure changes of each air cushion, the drainage smoothness of the drainage ditch, the flatness of the membrane surface and the tension uniformity are continuously monitored; after all indicators meet the design requirements, the overall system acceptance is carried out.

10. The construction method of the curved mesh double-layer ETFE air cushion membrane structure system based on intelligent monitoring according to claim 8, characterized in that: In step two, the installation of the radial drainage ditch structure (2) and the circumferential drainage ditch structure (3) is specifically as follows: Step 2.1, locate the welding point in advance on the main structure (1) and weld the rib plate (23a); Step 2.2: Use a crane or tower crane to lift the processed drainage ditch (23c) to the roof installation area; Step 2.3: Workers install drainage ditches (23c) using a boom lift. Step 2.4: Install the second drainage ditch (23c) using the same construction method. Step 2.5: Complete the installation of the radial drainage ditch structure (2); Step 2.6: Install the circumferential drainage ditch structure (3) using the same construction method. The construction is now complete.

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