A high-pressure low-pressure air-rib combined air-bearing type membrane structure fireproof performance improving device

Abstract

The application provides a high-pressure and low-pressure air rib combined air-bearing type membrane structure fireproof performance improving device, and belongs to the technical field of building structure fireproofing. The existing air-bearing type membrane structure is not supported by beams and columns inside, has weak anti-collapse ability, and needs fireproof protection, but the conventional fireproof method is not applicable. The air charging equipment charges air into the air-bearing type membrane structure roof; the high-pressure air rib structure is fixedly arranged on the air-bearing type membrane structure roof and is used for supporting the air-bearing type membrane structure roof; the air charging equipment supplies air for the high-pressure air rib structure; the low-pressure air rib structure is fixedly arranged on the air-bearing type membrane structure roof, the low-pressure air rib structure is provided with a plurality of openings, the air charging equipment supplies air for the low-pressure air rib structure, and the low-pressure air rib structure can spray air into the air-bearing type membrane structure roof through the openings. Fireproofing and heat insulation are realized through the membrane cooling of the low-pressure air rib structure, and the rigidity of the high-pressure air rib structure is improved to delay collapse.

Description

Technical Field

[0001] This invention belongs to the field of fire protection technology for building structures, and in particular relates to a fire protection performance enhancement device for a high-pressure and low-pressure air-ribbed combined air-supported membrane structure. Background Technology

[0002] Air-supported membrane structures utilize a continuous flow of air into the space via fans to create the designed curved surface, offering advantages such as large space, light weight, and simple construction. However, existing air-supported membrane structures lack internal beam and column support, relying solely on the significant internal pressure created by the air to bear external loads, resulting in weak collapse resistance. The inherently non-fire-resistant nature of air-supported membrane structures necessitates fire protection. However, conventional fire prevention methods are difficult to apply to such structures: firstly, the lightweight and flexible membrane surface makes it impossible to lay fire-fighting water supply pipes; secondly, due to their large spatial scale, effective fire compartmentation is difficult to implement, and the protection range of conventional ground-based fire prevention facilities is significantly limited. Summary of the Invention

[0003] In view of this, in order to solve the problems that existing air-supported membrane structures have no internal beam and column support, have weak anti-collapse ability, and require fire protection, but conventional fire protection methods are not applicable, this invention proposes a high-pressure and low-pressure air rib combined air-supported membrane structure fire protection performance improvement device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A fire resistance enhancement device for a high-pressure and low-pressure air-ribbed combined air-supported membrane structure includes: Air-supported membrane structure roof; Inflating equipment, used to inflate the air-supported membrane structure roof; The high-pressure air rib structure is fixedly installed on the air-supported membrane structure roof to support the air-supported membrane structure roof. The air inflation equipment supplies air to the high-pressure air rib structure. The low-pressure air rib structure is fixedly installed on the air-supported membrane structure roof. The low-pressure air rib structure has multiple openings, and the inflation equipment supplies air to the low-pressure air rib structure. The low-pressure air rib structure can spray air into the air-supported membrane structure roof through the openings.

[0005] As a preferred embodiment of the aforementioned high-pressure and low-pressure air-ribbed combined air-supported membrane structure fire resistance enhancement device, the high-pressure air-ribbed structure includes two high-pressure air-ribbed crossbeams, two high-pressure air-arch gables, multiple high-pressure main load-bearing ribs, and multiple high-pressure auxiliary support ribs. The two high-pressure air-arch gables are located at both ends of the air-supported membrane structure roof. The two high-pressure air-ribbed crossbeams are parallel and spaced apart. The two ends of the high-pressure air-ribbed crossbeams are fixedly connected to the two high-pressure air-arch gables respectively. Every two high-pressure main load-bearing ribs are arranged crosswise. The high-pressure main load-bearing ribs are fixedly connected to the high-pressure air-ribbed crossbeams. The high-pressure auxiliary support ribs are located below the high-pressure air-ribbed crossbeams and are connected to the high-pressure main load-bearing ribs.

[0006] As a preferred embodiment of the fire resistance enhancement device for the aforementioned high-pressure and low-pressure air-ribbed combined air-supported membrane structure, the height of the low-pressure air-ribbed structure is less than or equal to 7m.

[0007] As a preferred embodiment of the fire resistance enhancement device for the combined high-pressure and low-pressure air ribs air-bearing membrane structure, the low-pressure air rib structure includes multiple low-pressure air ribs, with one part of the low-pressure air ribs closely attached to the high-pressure main load-bearing rib and another part of the low-pressure air ribs closely attached to the high-pressure auxiliary support rib. The low-pressure air ribs are provided with multiple openings.

[0008] As a preferred embodiment of the aforementioned high-pressure and low-pressure air-ribbed combined air-supported membrane structure fire resistance enhancement device, the high-pressure and low-pressure air-ribbed combined air-supported membrane structure fire resistance enhancement device further includes a main air supply pipe, a first high-pressure air supply pipe, a second high-pressure air supply pipe, and a low-pressure air supply pipe. The inflation device is connected to the main air supply pipe. The two ends of the first high-pressure air supply pipe are respectively connected to the main air supply pipe and the high-pressure main load-bearing rib. The two ends of the second high-pressure air supply pipe are respectively connected to the main air supply pipe and the high-pressure auxiliary support rib. The two ends of the low-pressure air supply pipe are respectively connected to the main air supply pipe and the low-pressure air rib.

[0009] As a preferred embodiment of the above-mentioned high-pressure and low-pressure air rib combined air-supported membrane structure fire resistance improvement device, the high-pressure and low-pressure air rib combined air-supported membrane structure fire resistance improvement device further includes a sleeve, in which both the high-pressure air rib structure and the low-pressure air rib structure are inserted, and the sleeve is fixedly connected to the roof of the air-supported membrane structure.

[0010] As a preferred embodiment of the aforementioned high-pressure and low-pressure air-ribbed combined air-supported membrane structure fire resistance enhancement device, the sleeve is made of Oxford cloth.

[0011] As a preferred embodiment of the fire resistance enhancement device for the aforementioned high-pressure and low-pressure air-ribbed combined air-supported membrane structure, the sleeve is equipped with a zipper.

[0012] As a preferred embodiment of the fire resistance enhancement device for the above-mentioned high-pressure and low-pressure air rib combined air-bearing membrane structure, the sleeve is provided with multiple air outlets. The low-pressure air ribs around the openings are fixedly connected to the sleeves around the air outlets by bolt clamps, and the air outlets are connected to the openings.

[0013] As a preferred embodiment of the aforementioned high-pressure and low-pressure air-ribbed combined air-supported membrane structure fire resistance enhancement device, the high-pressure and low-pressure air-ribbed combined air-supported membrane structure fire resistance enhancement device further includes a diaphragm, an anchoring ring, and a cable. The diaphragm is fixedly installed on the lower surface of the air-supported membrane structure roof, the anchoring ring is fixedly installed on the diaphragm, one end of the cable is connected to the anchoring ring, and the other end is fixedly connected to the sleeve.

[0014] Compared with existing technologies, the beneficial effects of the fire resistance enhancement device for a high-pressure and low-pressure air-ribbed combined air-supported membrane structure provided by the present invention are as follows: This invention provides a fire resistance enhancement device for air-supported membrane structures using a combination of high-pressure and low-pressure air ribs. This device addresses the insufficient fire resistance of air-supported membrane structures through the synergistic operation of fire insulation via the cooling of the low-pressure air rib structure's membrane and the delayed collapse caused by the inherent rigidity of the high-pressure air rib structure. Utilizing the inherent inflation equipment of the air-supported membrane structure, high-pressure and low-pressure air rib structures are added. The inflation equipment inflates both structures. The high-pressure air rib structure, located beneath the roof of the air-supported membrane structure, acts as a supporting frame. When a fire is intense or the temperature is too high, causing damage to the roof, the high-pressure air ribs, with their own rigidity, support the roof, delaying the collapse of the air-supported membrane structure and enhancing its anti-collapse capability. The low-pressure air rib structure, placed beneath the roof of the air-supported membrane structure, further improves its fire resistance and insulation performance. This fireproof and heat-insulating function is based on the principle of thin-film cooling. It uses high-speed airflow ejected through the openings of the low-pressure air rib structure to isolate the roof of the air-supported membrane structure from the high temperature of the fire, thus delaying its temperature rise in a fire and delaying the time of damage. Attached Figure Description The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a schematic diagram of the fire resistance improvement device for a high-pressure and low-pressure air-ribbed combined air-supported membrane structure provided in a specific embodiment of the present invention. Figure 2 This is a top view of the fire resistance improvement device for the high-pressure and low-pressure air-ribbed combined air-supported membrane structure provided in a specific embodiment of the present invention; Figure 3 This is a partial structural schematic diagram of the fire resistance improvement device for the high-pressure and low-pressure air-ribbed combined air-supported membrane structure provided in a specific embodiment of the present invention. Figure 4 This is a cross-sectional schematic diagram of the fire resistance improvement device for the high-pressure and low-pressure air-ribbed combined air-bearing membrane structure provided in a specific embodiment of the present invention; Figure 5 This is a cross-sectional schematic diagram of a portion of the fire resistance performance enhancement device for a high-pressure and low-pressure air-ribbed combined air-supported membrane structure provided in a specific embodiment of the present invention. Figure 6 This is a schematic diagram of the low-pressure air rib of the fire resistance improvement device for the high-pressure and low-pressure air rib combined air-bearing membrane structure provided in a specific embodiment of the present invention. Figure 7 This is a schematic diagram of the lower part of the fire resistance performance enhancement device of the high-pressure and low-pressure air-ribbed combined air-supported membrane structure provided in a specific embodiment of the present invention.

[0015] In the picture: 1. Inflation equipment; 21. High-pressure air arch gable; 22. High-pressure air rib crossbeam; 23. High-pressure main load-bearing rib; 24. High-pressure auxiliary support rib; 3. Low-pressure air ribs; 31. Openings; 4. Air-supported membrane structure roof; 5. Sleeve; 51. Zipper; 6. Diaphragm; 7. Anchoring ring; 8. Cable; 9. Bolt clamps; 10. Main gas pipeline; 11. First high-pressure gas pipeline; 12. Second high-pressure gas pipeline; 13. Low-pressure gas pipeline. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other, and the described embodiments are only some embodiments of the present invention, not all embodiments.

[0017] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0018] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0019] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0020] See Figure 1-7 This invention provides a fire resistance enhancement device for a combined high-pressure and low-pressure air-ribbed air-supported membrane structure. The device includes an air-supported membrane structure roof 4, an inflation device 1, a high-pressure air-ribbed structure, and a low-pressure air-ribbed structure. The inflation device 1 inflates the air-supported membrane structure roof 4. The high-pressure air-ribbed structure is fixedly installed on the air-supported membrane structure roof 4 to support it, and the inflation device 1 supplies air to the high-pressure air-ribbed structure. The low-pressure air-ribbed structure is also fixedly installed on the air-supported membrane structure roof 4 and has multiple openings 31. The inflation device 1 supplies air to the low-pressure air-ribbed structure, which can then expel air into the air-supported membrane structure roof 4 through the openings 31.

[0021] This high-pressure and low-pressure air rib combined air-supported membrane structure fire resistance enhancement device relies on the inherent inflation equipment 1 of the air-supported membrane structure. High-pressure and low-pressure air rib structures are added, and the inflation equipment 1 inflates both structures. The high-pressure air rib structure is located below the roof 4 of the air-supported membrane structure, serving as a load-bearing frame. When the fire is fierce and the temperature is too high, causing damage to the roof, the high-pressure air ribs, with their own rigidity, support the roof, delaying the collapse of the air-supported membrane structure and enhancing its anti-collapse capability. The low-pressure air rib structure, arranged under the roof of the air-supported membrane structure, improves its fire resistance and heat insulation performance. This fire resistance and heat insulation function is based on the principle of thin-film cooling. High-speed airflow is ejected through the openings 31 of the low-pressure air rib structure to isolate the high temperature of the fire, protecting the roof of the air-supported membrane structure and delaying its temperature rise during a fire, thereby delaying the time of damage. By combining the fireproof and heat insulation achieved through the membrane cooling of the low-pressure air rib structure with the structural rigidity of the high-pressure air rib structure to delay collapse, the problem of insufficient fire resistance of air-supported membrane structures is solved from multiple aspects. This significantly improves the safety of air-supported membrane structures in fires, provides more available time for the safe evacuation of people inside buildings, and lays a solid foundation for its widespread application in more fields. Its application prospects are very promising.

[0022] Optionally, the high-pressure air rib structure includes two high-pressure air rib beams 22, two high-pressure air arch gables 21, multiple high-pressure main load-bearing ribs 23, and multiple high-pressure auxiliary support ribs 24. The two high-pressure air arch gables 21 are located at both ends of the air-supported membrane structure roof 4. The two high-pressure air rib beams 22 are parallel and spaced apart, with both ends of each beam fixedly connected to the two high-pressure air arch gables 21. Every two high-pressure main load-bearing ribs 23 are arranged intersectingly, and the main load-bearing ribs 23 are fixedly connected to the beams 22. The high-pressure auxiliary support ribs 24 are located below the beams 22 and connected to the main load-bearing ribs 23. This arrangement improves the overall stability of the structure.

[0023] Optionally, the height of the low-pressure air rib structure is less than or equal to 7m. According to relevant literature, when the internal height of the air-supported membrane structure is greater than 7 meters, fireproof and heat insulation devices are not required. Therefore, a high-pressure air rib beam 22 is installed at a height of 7m, and a low-pressure air rib structure is installed below 7m for fire protection. Furthermore, a high-pressure auxiliary support rib 24 is installed below 7m to maintain the overall stability of the structure.

[0024] Optionally, the low-pressure air rib structure includes multiple low-pressure air ribs 3, some of which are set close to the high-pressure main force-bearing rib 23, and other low-pressure air ribs 3 are set close to the high-pressure auxiliary support rib 24. The low-pressure air ribs 3 are provided with multiple openings 31.

[0025] Optionally, the fire resistance enhancement device for the combined high-pressure and low-pressure air-ribbed membrane structure further includes a main air supply pipe 10, a first high-pressure air supply pipe 11, a second high-pressure air supply pipe 12, and a low-pressure air supply pipe 13. The inflation device 1 is connected to the main air supply pipe 10. The two ends of the first high-pressure air supply pipe 11 are connected to the main air supply pipe 10 and the high-pressure main support rib 23, respectively. The two ends of the second high-pressure air supply pipe 12 are connected to the main air supply pipe 10 and the high-pressure auxiliary support rib 24, respectively. The two ends of the low-pressure air supply pipe 13 are connected to the main air supply pipe 10 and the low-pressure air rib 3, respectively. The inflation device 1 supplies air to the high-pressure main support rib 23 through the main air supply pipe 10 and the first high-pressure air supply pipe 11. The high-pressure main support rib 23 is connected to the high-pressure air rib crossbeam 22. The high-pressure main support rib 23 located at both ends is connected to the high-pressure air arch gable wall 21, thereby supplying air to the high-pressure air rib crossbeam 22 and the high-pressure air arch gable wall 21 through the high-pressure main support rib 23. The inflation device 1 supplies air to the high-pressure auxiliary support rib 24 through the main air supply pipe 10 and the second high-pressure air supply pipe 12. The inflation device 1 supplies air to the low-pressure air rib 3 through the main air supply pipe 10 and the low-pressure air supply pipe 13.

[0026] Optionally, the fire resistance enhancement device for the high-pressure and low-pressure air rib combined air-supported membrane structure further includes a sleeve 5. Both the high-pressure and low-pressure air rib structures are housed within the sleeve 5, which is fixedly connected to the air-supported membrane structure roof 4. The sleeve 5 connects the high-pressure main load-bearing rib 23, the high-pressure auxiliary support rib 24, and the low-pressure air rib 3, enabling them to support each other and improve structural stability.

[0027] Optionally, the sleeve 5 is made of Oxford cloth.

[0028] Optionally, the sleeve 5 is provided with a zipper 51. The sleeve 5 can be opened or closed by means of the zipper 51.

[0029] Optionally, the sleeve 5 is provided with multiple air outlets. The low-pressure air ribs 3 around the opening 31 are fixedly connected to the sleeve 5 around the air outlets by bolt clamps 9, and the air outlets are connected to the opening 31. This allows the air in the low-pressure air ribs 3 to be ejected smoothly.

[0030] Optionally, the fire resistance enhancement device for the high-pressure and low-pressure air rib combined air-supported membrane structure further includes a diaphragm 6, an anchoring ring 7, and a cable 8. The diaphragm 6 is fixedly installed on the lower surface of the air-supported membrane structure roof 4, the anchoring ring 7 is fixedly installed on the diaphragm 6, one end of the cable 8 is connected to the anchoring ring 7, and the other end is fixedly connected to the sleeve 5.

[0031] Obviously, the above-disclosed embodiments of the present invention are merely illustrative of the invention. The embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. It is neither necessary nor possible to exhaustively describe all embodiments herein.

Claims

1. A fire resistance enhancement device for a high-pressure and low-pressure air-ribbed combined air-supported membrane structure, characterized in that, include: Air-supported membrane structure roof (4); Inflating device (1) inflates air into the air-supported membrane structure roof (4); The high-pressure air rib structure is fixedly installed on the air-supported membrane structure roof (4) to support the air-supported membrane structure roof (4). The air-filling device (1) supplies air to the high-pressure air rib structure. The high-pressure air rib structure includes two high-pressure air rib beams (22), two high-pressure air arch walls (21), multiple high-pressure main load-bearing ribs (23) and multiple high-pressure auxiliary support ribs (24). The two high-pressure air arch walls (21) are located at both ends of the air-supported membrane structure roof (4). The two high-pressure air rib beams (22) are parallel and spaced apart. The two ends of the high-pressure air rib beams (22) are fixedly connected to the two high-pressure air arch walls (21) respectively. Every two high-pressure main load-bearing ribs (23) are arranged crosswise. The high-pressure main load-bearing ribs (23) are fixedly connected to the high-pressure air rib beams (22). The high-pressure auxiliary support ribs (24) are located below the high-pressure air rib beams (22) and are connected to the high-pressure main load-bearing ribs (23). The low-pressure air rib structure is fixedly installed on the air-supported membrane structure roof (4). The low-pressure air rib structure has multiple openings (31). The air-filling device (1) supplies air to the low-pressure air rib structure. The low-pressure air rib structure can spray air into the air-supported membrane structure roof (4) through the openings (31). The low-pressure air rib structure includes multiple low-pressure air ribs (3). A portion of the low-pressure air ribs (3) are set close to the high-pressure main force rib (23), and another portion of the low-pressure air ribs (3) are set close to the high-pressure auxiliary support rib (24). The low-pressure air ribs (3) have multiple openings (31).

2. The fire resistance enhancement device for a high-pressure and low-pressure air-ribbed combined air-supported membrane structure according to claim 1, characterized in that: The height of the low-pressure air rib structure is less than or equal to 7m.

3. The fire resistance enhancement device for high-pressure and low-pressure air-ribbed combined air-supported membrane structures according to claim 1, characterized in that: It also includes a main gas supply pipe (10), a first high-pressure gas supply pipe (11), a second high-pressure gas supply pipe (12) and a low-pressure gas supply pipe (13). The gas filling device (1) is connected to the main gas supply pipe (10). The two ends of the first high-pressure gas supply pipe (11) are connected to the main gas supply pipe (10) and the high-pressure main force rib (23) respectively. The two ends of the second high-pressure gas supply pipe (12) are connected to the main gas supply pipe (10) and the high-pressure auxiliary support rib (24) respectively. The two ends of the low-pressure gas supply pipe (13) are connected to the main gas supply pipe (10) and the low-pressure gas rib (3) respectively.

4. The fire resistance enhancement device for high-pressure and low-pressure air-ribbed combined air-supported membrane structures according to claim 1, characterized in that: It also includes a sleeve (5), in which the high-pressure air rib structure and the low-pressure air rib structure are both inserted into the sleeve (5), and the sleeve (5) is fixedly connected to the air-supported membrane structure roof (4).

5. The fire resistance enhancement device for a high-pressure and low-pressure air-ribbed combined air-supported membrane structure according to claim 4, characterized in that: The sleeve (5) is made of Oxford cloth.

6. The fire resistance enhancement device for high-pressure and low-pressure air-ribbed combined air-supported membrane structures according to claim 4, characterized in that: The sleeve (5) is equipped with a zipper (51).

7. The fire resistance enhancement device for a high-pressure and low-pressure air-ribbed combined air-supported membrane structure according to claim 4, characterized in that: The sleeve (5) is provided with multiple air outlets. The low-pressure air ribs (3) around the opening (31) are fixedly connected to the sleeve (5) around the air outlets by bolt clamps (9), and the air outlets are connected to the opening (31).

8. The fire resistance enhancement device for a high-pressure and low-pressure air-ribbed combined air-supported membrane structure according to claim 4, characterized in that: It also includes a diaphragm (6), an anchoring ring (7) and a cable (8). The diaphragm (6) is fixedly installed on the lower surface of the air-supported membrane structure roof (4). The anchoring ring (7) is fixedly installed on the diaphragm (6). One end of the cable (8) is connected to the anchoring ring (7), and the other end is fixedly connected to the sleeve (5).

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