A high pressure air rib membrane structure applied to underground environment

Abstract

The application discloses a high-pressure gas-rib membrane structure applied to underground environment, which comprises a gas-rib inlet module, a gas-rib support module, a gas-rib sealing module, a connecting unit, a foot cross brace and a high-pressure inflation valve. The adjacent gas-rib modules are tightly connected through the connecting unit. Each gas-rib module comprises a plurality of arched gas-rib units, and the arched gas-rib units are independent of each other. The geometric shape of each arched gas-rib unit is composed of a standard semicircular arc at the upper part and a linear vertical section at the lower part. A foot cross brace is arranged at the bottom end every two arched gas-rib units. The foot cross brace is detachably connected to the inner side of the arched gas-rib unit through magic tape. The high-pressure inflation valve is heat sealed to the outer side of the bottom of the arched gas-rib unit. The structure is composed of multiple modules, and each stress unit in the module is independent, so that the structure has sufficient bearing capacity to meet the use requirements in underground environment. The whole structure has low manufacturing cost, light self weight, flexible assembly and disassembly and rapid erection and withdrawal.

Description

Technical Field

[0001] This invention relates to the field of building structure technology, specifically to a high-pressure air-ribbed membrane structure for use in underground environments. Background Technology

[0002] Underground civil defense works are gradually developing towards lower costs, faster erection, and energy conservation and environmental protection. Traditional reinforced concrete arch structures are increasingly unable to meet these requirements. Air-ribbed membrane structures, on the other hand, are lightweight and portable, can be quickly erected and dismantled, and have a relatively low cost per unit area, making them a good fit for the development needs of underground civil defense works.

[0003] While existing air-ribbed membrane structures have been successfully applied on the ground, they cannot be used in underground environments, mainly due to the following issues:

[0004] Most of them are integral inflatable structures, which will instantly lose their load-bearing capacity and collapse rapidly when they break underground, leaving users with insufficient time to escape;

[0005] If it is an independent air rib structure, the connection between adjacent air ribs is not tight enough, which cannot resist the bag-like effect caused by the accumulation of external soil in the gaps in the underground environment, and it is easy to sink and collapse at the connection.

[0006] Most of them are low-pressure air-ribbed tents, and their load-bearing capacity cannot withstand the earth pressure from all sides.

[0007] Some air-ribbed tents require continuous inflation with an air pump during subsequent use, resulting in higher usage and maintenance costs when used in underground civil defense works.

[0008] To address the aforementioned issues, it is essential to invent an air-ribbed membrane structure that can be applied to underground environments, is easy to carry, assemble, and maintain, and has sufficient load-bearing capacity. Summary of the Invention

[0009] This invention proposes a high-pressure air-ribbed membrane structure for underground environments. The structure uses high-strength TPU material to create independent high-pressure air-ribbed modules. Furthermore, to avoid loads from vertical and lateral soil pressures in the underground environment, a prestressed cable design is used to connect the air-ribbed modules, ensuring a seamless and tight connection between them, effectively solving the problems existing in the aforementioned technologies.

[0010] This invention provides the following technical solution: a high-pressure air-ribbed membrane structure for underground environments. This high-pressure air-ribbed membrane structure consists of multiple air-ribbed modules, which are tightly connected to each other via connecting units. Every three air-ribbed modules contain several arched air-ribbed units, and each arched air-ribbed unit is independent of the others. Every two arched air-ribbed units have a horizontal support at their bottom end, which is detachably connected to the inside of the arched air-ribbed unit via Velcro. The high-pressure inflation valve is heat-sealed to the outer bottom of the arched air-ribbed unit. The air-ribbed modules are connected as needed to form an air-ribbed inlet module, an air-ribbed support module, and an air-ribbed sealing module.

[0011] Preferably, in the above-mentioned high-pressure air-ribbed membrane structure applied in underground environments, the arched air-rib unit is made of high-strength polyester woven-TPU composite material. Its geometry consists of an upper standard semi-circular arc segment and a lower straight vertical segment. A Velcro strip is heat-sealed to the inner bottom, and pull rings are heat-sealed to both sides. The air pressure inside the arched air-rib unit is greater than 0.25 MPa, and adjacent arched air-rib units are tightly fixed together by connecting units. The high-strength polyester woven-TPU composite material is formed by heat-sealing an outer high-strength polyester woven layer and an inner TPU layer under high temperature and pressure.

[0012] Based on the above technical features, the structure as a whole can better withstand the loads exerted by the soil in the underground environment.

[0013] Preferably, in the above-mentioned high-pressure air-ribbed membrane structure applied in underground environments, the connecting unit includes a pull ring, a cable, and a constraint latch. The pull ring is heat-sealed on both sides of the arched air-ribbed unit, and there are two rows of pull rings on each side. The cable crosses through the pull ring and is fixed to the constraint latch, and the constraint latch is locked on the lower side of the bottom pull ring.

[0014] Based on the above technical features, the arched air rib units are tightly connected without gaps, which can better avoid the bag effect caused by the soil above the structure.

[0015] Preferably, in the above-mentioned high-pressure air-ribbed membrane structure applied in underground environments, the air-ribbed inlet module is composed of arched air-ribbed units arranged closely together in a longitudinally tangent manner, and the centers of the upper semicircles of all the arched air-ribbed units are located on the same horizontal line.

[0016] Based on the above technical features, the structure can bear the vertical load of the soil while facilitating the entry and exit of personnel.

[0017] Preferably, in the above-mentioned high-pressure air-ribbed membrane structure applied in underground environments, the air-ribbed support module is composed of several arched air-ribbed units of the same size arranged closely together.

[0018] Preferably, in the above-mentioned high-pressure air-ribbed membrane structure applied in underground environments, the air-ribbed sealing module is composed of arched air-ribbed units and sealing tarpaulin. The arched air-ribbed units are arranged closely in a longitudinally tangent manner, and the centers of the upper semicircles of all the arched air-ribbed units are located on the same horizontal line. The sealing tarpaulin is fixed to the side of the outermost arched air-ribbed unit.

[0019] Based on the above technical features, the structure's ability to withstand lateral earth pressure on the outer side of the tail can be improved.

[0020] Preferably, in the above-mentioned high-pressure air-ribbed membrane structure applied in underground environments, the ground support is made of strong polyester woven-TPU composite material, which is detachably installed at the bottom of the arched air-rib unit and connected to the arched air-rib unit by Velcro at both ends.

[0021] Beneficial effects

[0022] Based on the above technical features, the structure's bearing capacity against lateral earth pressure can be improved.

[0023] The beneficial effects of this invention are:

[0024] Compared to traditional reinforced concrete underground civil defense facilities, this invention boasts lower construction costs, lighter weight, and more flexible assembly and disassembly, facilitating small-group operations during military activities. Unlike traditional air-rib structures, this invention employs independent air-rib units. If one air-rib fails due to an accident, the others can continue to bear the load, enhancing the overall structural safety redundancy in underground environments. Unlike the high internal pressure of surface air-rib structures, this invention improves structural rigidity while maintaining overall structural flexibility, better bearing the lateral earth pressure from the surrounding soil in the unique underground environment. The connecting unit design allows for quick and easy connection of adjacent independent air-rib units, effectively addressing the bag effect caused by the soil above the structure and improving overall load-bearing capacity. Furthermore, the design, without a base or fixed cables and using horizontal bracing at the ground, reduces structural weight and assembly workload, allowing the entire invention to be easily carried and quickly assembled by three people. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0026] Figure 2 This is a schematic diagram of the arched air rib unit structure of the present invention.

[0027] Figure 3 This is a three-dimensional structural diagram of the connecting unit of the present invention.

[0028] Figure 4 This is a schematic diagram of the air rib inlet module structure of the present invention.

[0029] Figure 5 This is a schematic diagram of the air rib support module structure of the present invention.

[0030] Figure 6 This is a three-dimensional structural diagram of the air-ribbed sealing module of the present invention.

[0031] Figure 7 This is a schematic diagram of the three-dimensional structure of the cross brace of the foundation foot of the present invention.

[0032] In the diagram: 1. Air rib inlet module; 2. Air rib support module; 3. Air rib sealing module; 4. Connecting unit; 5. Ground support; 6. High-pressure inflation valve; 7. Arched air rib unit; 31. Sealing tarpaulin; 41. Pull ring; 42. Cable; 43. Restraint clip; 51. Ground support Velcro; 71. Arched air rib unit Velcro. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0034] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, 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 this invention.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0036] Please refer to Figure 1-6A high-pressure air-ribbed membrane structure for underground environments includes an air-ribbed inlet module 1, an air-ribbed support module 2, an air-ribbed sealing module 3, a connecting node 4, a ground support 5, and a high-pressure inflation valve 6. Adjacent air-ribbed modules are tightly fixed together by connecting units 4. Each air-ribbed module contains several arched air-ribbed units 7, and each arched air-ribbed unit 7 is independent of the others. Its geometry consists of a standard semi-circular arc at the top and a straight vertical section at the bottom. A ground support 5 is installed at the bottom of every two arched air-ribbed units 7. The ground support 5 is detachably connected to the inside of the arched air-ribbed unit via Velcro. The high-pressure inflation valve 6 is heat-sealed to the outside of the bottom of the arched air-ribbed unit 7.

[0037] The arched air rib unit 7 is made of high-strength polyester woven-TPU composite material. Its geometry consists of a standard semi-circular upper section and a straight vertical lower section. Velcro 71 is heat-sealed to the inner bottom, and pull rings 41 are heat-sealed to both sides. The air pressure inside the arched air rib unit 7 is greater than 0.25 MPa. Adjacent arched air rib units 7 are tightly fixed together by connecting units 4. The anchor cross brace 5 is also made of high-strength polyester woven-TPU composite material. It is detachably installed at the bottom of the arched air rib unit 7 and connected to the arched air rib unit 7 by Velcro 51 heat-sealed at both ends. The high-strength polyester woven-TPU composite material is formed by heat-sealing an outer high-strength polyester woven layer and an inner TPU layer under high temperature and pressure. Based on these technical features, the overall structure can better withstand the vertical loads exerted by the soil in the underground environment and can improve the structure's bearing capacity against lateral earth pressure.

[0038] The connecting unit 4 includes pull rings 41, ropes 42, and restraint clips 43. The pull rings 41 are heat-sealed to both sides of the arched air rib unit 7, with two rows of pull rings on each side, and a 15-degree interval between each pull ring. The ropes 42 cross through the pull rings 41 and are fixed to the restraint clips 43, which are engaged with the lower side of the bottom pull ring to tighten the ropes. Based on the above technical features, the arched air rib units are tightly connected without gaps, which can better avoid the bagging effect of the soil above the structure.

[0039] The air rib entrance module 1 is composed of arched air rib units 7 arranged closely together in a longitudinally tangent manner. The centers of the upper semicircles of all the arched air rib units 7 are located on the same horizontal line. The net height of the independent air rib units gradually decreases from the normal usable height to a height that only allows one person to pass through, making it easier to connect to the outer corridor while still being able to bear the soil pressure. Based on the above technical features, the structure can bear the vertical load of the soil while facilitating the entry and exit of users.

[0040] The air rib support module 2 is composed of several arched air rib 7 units of the same size arranged closely together.

[0041] The air rib enclosure module 3 consists of arched air rib units 7 and sealing tarpaulin 31. The arched air rib units 7 are arranged closely together with tangential longitudinal sections. The centers of the upper semicircles of all the arched air rib units 7 are located on the same horizontal line, and the net height of each individual air rib unit 7 gradually decreases from the normal usable height to the minimum. The sealing tarpaulin 31 is fixed to the side of the outermost arched air rib unit 7. Based on the above technical features, the structure's bearing capacity against lateral earth pressure on the outer rear side can be improved.

[0042] In this embodiment, each air rib module can be fabricated first and then connected one by one via connecting units. The individual air rib units can be laid flat on the ground before inflation using an air pump. With three people working together, the entire structure can be assembled within two hours. During use, the number of individual air rib units in the air rib support module can be increased or decreased to adapt to different environments, offering great flexibility. The invention's design, including the semi-circular + vertical section shape of the individual air rib units, the high internal pressure, the tangential contraction design of the air rib closed module, the cable loop design of the connecting units, and the air rib support design, all take into account portability for field applications and the loads that may be caused by vertical and lateral soil pressure in underground environments. The overall structure has low construction cost, is lightweight, and is flexible in loading and unloading, making it easy to carry and operate in small groups during field military activities, and can be widely applied and promoted.

[0043] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to specific implementations. Clearly, 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. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A high-pressure air-ribbed membrane structure for use in underground environments, characterized in that: The high-pressure air-ribbed membrane structure for underground environments consists of multiple air-ribbed modules. Adjacent air-ribbed modules are tightly connected by connecting units (4). Each air-ribbed module contains several arched air-ribbed units (7), and each arched air-ribbed unit (7) is independent of the others. Every two arched air-ribbed units (7) are provided with a ground support (5) at the bottom. The ground support (5) is detachably connected to the inside of the arched air-ribbed unit (7) by Velcro (71). The high-pressure inflation valve (6) is heat-sealed on the outside of the bottom of the arched air-ribbed unit (7). After the air-ribbed modules are connected as needed, they form an air-ribbed inlet module (1), an air-ribbed support module (2), and an air-ribbed sealing module (3). The connecting unit (4) includes a pull ring (41), a cable (42), and a constraint bayonet (43). The pull ring (41) is heat-sealed on both sides of the arched air-ribbed unit (7), and the pull ring (41) is arranged in two rows on the inner and outer sides respectively. The cable (42) crosses through the pull ring. The ring (41) is fixed on the constraint slot (43), which is located on the lower side of the bottom pull ring; the air rib inlet module (1) is composed of arched air rib units (7) arranged in a longitudinally tangent manner, and the center of the upper semicircle of all the arched air rib units (7) is located on the same horizontal line; the net height of the arched air rib unit gradually decreases from the normal use height to the height that only allows one person to pass through; the air rib support module (2) is composed of several arched air rib units (7) of the same size arranged closely together; the air rib sealing module (3) is composed of arched air rib units (7) and sealing tarpaulin (31), and the arched air rib units (7) are arranged in a longitudinally tangent manner, and the center of the upper semicircle of all the arched air rib units (7) is located on the same horizontal line, and the net height of the arched air rib unit (7) gradually decreases from the normal use height to the minimum; the sealing tarpaulin (31) is fixed on the side of the outermost arched air rib unit (7).

2. The high-pressure air-ribbed membrane structure for underground environments according to claim 1, characterized in that, The arched air rib unit (7) is made of strong polyester braided-TPU composite material. Its geometry consists of a standard semi-circular arc segment at the top and a straight vertical segment at the bottom. The bottom inner side is heat-sealed with Velcro (71), and the two sides are heat-sealed with pull rings (41). The internal air pressure that the arched air rib unit (7) can withstand is greater than 0.25 MPa. Adjacent arched air rib units (7) are tightly fixed by connecting units (4). The strong polyester braided-TPU composite material is formed by heat-sealing the outer high-strength polyester braided layer and the inner TPU layer through high temperature and high pressure.

3. A high-pressure air-ribbed membrane structure for underground environments according to claim 1; characterized in that, The foot brace (5) is made of strong polyester woven-TPU composite material. It is detachably set at the bottom of the arched air rib unit (7) and connected to the arched air rib unit (7) by Velcro (51) heat-sealed at both ends.

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