Novel air rib type pneumatic membrane structure

Abstract

The utility model discloses a novel air rib type inflatable membrane structure which comprises a main body structure formed by combining a plurality of independent air rib inflatable columns side by side from front to back, a grid drawstring structure is laid outside each air rib inflatable column, and each grid drawstring structure is composed of an axial drawstring, an annular drawstring and an inclined drawstring. The grid drawstring structure is provided with connection fixing points on the front side and the rear side of the air rib inflation columns, and the adjacent air rib inflation columns are connected through the connection fixing points. The limitation of the tensile strength of the PVC film material is broken through through the inflatable column external constraint drawstring net, and a mixed structure form of internal air pressure support and external drawstring net pulling is formed, so that the structure form is more stable, and the load resisting capacity is high; the air rib inflatable column structure of the external constraint drawstring net relieves the local stress concentration of the inner arc generated by the stress characteristic of the arc arch column, and the safety of the whole structure is effectively improved. And a modularized assembly structure form is adopted, so that disassembly, assembly and movement are convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of inflatable membrane structures, and particularly relates to a novel air rib type inflatable membrane structure. Background Technique

[0002] With the gradual improvement of people's material and cultural living standards, people pay more attention to cultural leisure and sports fitness activities. Outdoor open-air sports stadiums are greatly affected by the weather and the exercise time is limited, so the demand for indoor sports stadiums is increasing day by day. At present, most indoor sports stadiums are concrete buildings or steel structure buildings, the number of buildings is limited, and the per capita floor area far cannot meet the needs of the national fitness campaign. Indoor sports stadiums have high overhangs and large spans, and the construction cost is high. Therefore, inflatable membrane structure sports stadiums are born because of their own advantages and are gradually recognized by people.

[0003] Inflatable membrane stadiums are generally air-supported membrane structure stadiums, air rib type membrane structure stadiums, and airbag / pillow type membrane structure stadiums. The air-supported membrane structure has a certain pressure inside and requires a fixed foundation, which is not convenient to move and requires continuous air supply from a fan. Although the energy consumption can be saved by frequency conversion control of the fan, the long-term maintenance and operation cost of the air-supported membrane still accounts for a relatively high proportion. The air rib type membrane structure, as the name implies, is a space structure formed by enclosing flexible membrane materials into a columnar form by means of a thermal welding production process. There are two inflatable forms: continuous air supply from a fan into the air rib membrane or a closed air structure with one-time inflation, so that the inside of the air rib membrane has a constant pressure. Therefore, the air rib membrane structure forms a certain structural stiffness, which can resist external loads and thus maintain the stability of the overall structure. The capsule type air rib membrane effectively avoids the disadvantages of the air-supported membrane such as having internal pressure in the internal movement environment, high fan operation cost, and inconvenient anchoring. There are also more and more engineering practice cases. The air pillow type membrane structure requires a steel structure main frame, and the overall construction cost is high. The air pillow membrane structure is generally used as the enclosure structure of a building.

[0004] Although the bladder-type air rib membrane has been relatively well developed, there are still many problems. For example, in (Patent CN104110156B), a tension rib structure is required inside the bladder-type air rib membrane structure to maintain its shape. The production process of the tension rib structure is complex and prone to damage, resulting in a relatively high cost; the drainage ditch at the grouped combination position of the bladder-type air rib membrane presents a V-shaped depression, which is prone to snow accumulation and has poor snow resistance; due to the limitations of the membrane material and membrane processing technology of the bladder-type air rib membrane, it is difficult to achieve a large-span structural form; the internal pressure of the air rib type membrane structure is much higher than that of the air-supported membrane structure, and the airtight structure form of the air rib type membrane structure is greatly affected by temperature (PV = NRT), so the internal pressure control of the air rib type membrane structure requires refinement. For the independent air column row arch type air rib membrane structure and the inflatable column frame type air rib membrane structure, the tensile strength of the inflatable column material itself is effectively utilized; due to the characteristics of its structural form, the inflatable column frame type air rib membrane has many heat-sealed splicing welds on the film pieces, which are prone to air leakage. There are many joints at the intersection points of the air column frames, and there are local stress concentration weak points. Affected by temperature, the internal pressure of the air rib membrane rises rapidly in a short time, and the welds at the intersection points of the air column frames are prone to bursting; there is no better combined connection form for the independent air column row arch type air rib membrane structure. Generally, connection buckle points are arranged on the upper part of the air rib membrane, and the connection buckle points are connected by fasteners such as open rings. The connection points of this row arch air rib type membrane structure are prone to local stress concentration, the connection points are prone to damage, and the overall stability of the air rib type membrane structure connected by buckle points is relatively poor, and there is no better windproof fixing measure.

[0005] Although the air rib type inflatable column is approximately an arc-shaped circular tube structure, for the operability of production and processing, the circular tube structure of the air rib inflatable column is often made of multiple cylindrical sections intersecting each other. The remarkable feature of this structure is that the forming of each air column structure is controllable, and the overall forming of the arc-shaped arch structure is controllable. However, since the air rib type inflatable column is welded with flexible membrane materials, the flexible membrane materials themselves have significant elasticity, and the warp and weft tensile strengths of the membrane base fabric yarns are different. Therefore, the air rib type inflatable column will undergo obvious deformation after inflation and forming, generally manifested as the legs on both sides of the circular arch being outwardly deflected, that is, the span of the legs on both sides of the arc-shaped arch air rib inflatable column increases, failing to meet the design requirements. And due to the elastic nature of the membrane material, under the action of long-term continuous internal pressure load and the load of relatively high internal pressure to resist extreme weather, the air rib membrane itself will undergo irreversible tensile deformation, that is, the size of the inflatable column film piece itself will be stretched and increased. The remarkable feature of the force on the arc-shaped arch air rib inflatable column is that both the outer arc and the inner arc of the arc-shaped arch have the effect of restraining the deformation of the air rib inflatable column. Under the action of the same internal pressure, the inner arc of the inflatable column is subjected to greater force, especially the force on the membrane material at the circumferential weld position of the inner arc is more obvious. Summary of the Utility Model

[0006] The purpose of the present utility model is to provide a novel air rib type inflatable membrane structure.

[0007] To solve the above technical problems, the utility model adopts the following technical solutions:

[0008] A novel air-rib type inflatable membrane structure, including a main structure formed by combining multiple independent air-rib inflatable columns in a front-back side-by-side form. A grid strap structure is laid outside each air-rib inflatable column, and the grid strap structure is composed of axial straps, circumferential straps, and diagonal straps; the grid strap structure is provided with connection and fixation points on the front and back sides of the air-rib inflatable column, and adjacent air-rib inflatable columns are connected to each other through the connection and fixation points.

[0009] Furthermore, the grid strap structure is divided into an outer arc strap net located on the outer arc side of the air-rib inflatable column and an inner arc strap net located on the inner arc side of the air-rib inflatable column. The outer arc strap net and the inner arc strap net form connection and fixation points on the front and back sides of the air-rib inflatable column.

[0010] Furthermore, the connection and fixation points are set using Scheme 1 or Scheme 2;

[0011] Scheme 1:

[0012] On the same air-rib inflatable column, the outer arc strap net has a certain length of strap movable end arranged on the front side of the air-rib inflatable column and a strap connection end arranged on the back side;

[0013] On the same air-rib inflatable column, the inner arc strap net has a strap connection end arranged on the front side of the air-rib inflatable column and a certain length of strap movable end arranged on the back side;

[0014] The above-mentioned strap movable end and strap connection end serve as the connection and fixation points;

[0015] Scheme 2:

[0016] On the same air-rib inflatable column, the outer arc strap net has a strap connection end arranged on the front side of the air-rib inflatable column and a certain length of strap movable end arranged on the back side;

[0017] On the same air-rib inflatable column, the inner arc strap net has a certain length of strap movable end arranged on the front side of the air-rib inflatable column and a strap connection end arranged on the back side;

[0018] The above-mentioned strap movable end and strap connection end serve as the connection and fixation points;

[0019] Between adjacent air-rib inflatable column 1 and air-rib inflatable column 2, the strap movable end of air-rib inflatable column 1 is connected to the strap connection end of air-rib inflatable column 2, and the strap connection end of air-rib inflatable column 1 is connected to the strap movable end of air-rib inflatable column 2;

[0020] On the side of the air-rib inflatable column at the gable wall position, the strap movable end of the outer arc strap net is connected to the strap connection end of the inner arc strap net, or the strap movable end of the inner arc strap net is connected to the strap connection end of the outer arc strap net.

[0021] Further, the inner arc tension belt net and the outer arc tension belt net are fixedly connected to the membrane body of the air rib inflatable column.

[0022] Further, the diagonal tension belt extends from the outermost arc position of the air rib inflatable column to the innermost arc position of the air rib inflatable column. The diagonal tension belt is arranged between multiple circumferential tension belts, so that the diagonal tension belt cooperates with the axial tension belt and the circumferential tension belt to form a cross-shaped structure.

[0023] Further, the axial tension belt is provided with an axially tension belt anchoring free end at the bottom of the air rib inflatable column. The axially tension belt anchoring free end is connected to the tension belt adjustable tensioning device, and the tension belt adjustable tensioning device is fixed on the ground foundation.

[0024] Further, it also includes an internal tension structure for the air rib. The internal tension structure for the air rib includes an internal tensioning belt. The anchoring point of the internal tensioning belt is located at the intersection of the circumferential tension belt and the inner arc axial tension belt. The intersection points of different internal tensioning belts in the same air rib inflatable column are fixedly connected through an adjustable cross buckle.

[0025] Further, the air rib inflatable column is composed of several similar or identical unfolded sheets; the axis heat-sealed weld of the air rib inflatable column is arranged on the outer arc of the air rib inflatable column and is arranged with staggered joints to form a T-shaped weld.

[0026] Further, strengthening air rib inflatable columns are arranged at certain intervals inside the main structure. The strengthening air rib inflatable columns are clamped between two air rib inflatable columns of the main structure; a grid tension belt structure is also laid outside the strengthening air rib inflatable columns. The grid tension belt structure of the strengthening air rib inflatable columns is connected to the grid tension belt structure of the air rib inflatable columns of the main structure through a connecting belt.

[0027] Further, it also includes a gas supply system for supplying gas to the air rib inflatable column. The gas supply system includes an energy-saving air replenishing system and a continuous gas supply system;

[0028] The air rib inflatable columns are grouped for gas supply and are divided into alternately arranged grouped air rib group A and grouped air rib group B in the front-back direction. The grouped air rib group A includes several air rib inflatable columns of the main structure and at least one strengthening air rib inflatable column. The grouped air rib group B includes several air rib inflatable columns of the main structure;

[0029] The grouped air rib group A and the grouped air rib group B are respectively connected to the energy-saving gas supply branch pipeline through the grouped air rib gas supply pipeline. The energy-saving gas supply branch pipeline is connected to the energy-saving gas supply main pipeline. The energy-saving gas supply main pipeline is connected to the energy-saving intermittent gas supply device to form an energy-saving air replenishing system;

[0030] It also includes a pressure relief valve. The pressure relief valve is arranged on the grouped air rib gas supply pipeline, or the pressure relief valve is arranged on the common flange interface of the air rib inflatable column;

[0031] When the energy-saving air supplement system is working, when the pressure in the inflatable column cavity exceeds the working pressure range, it will automatically release air, and when the pressure in the inflatable column cavity is lower than the working pressure range, it will automatically supplement air and pressurize;

[0032] The grouped air rib supply pipeline is also connected with a continuous air supply device to form a continuous air supply system; the continuous air supply system can supply air to the inflatable columns of grouped air ribs or a single air rib inflatable column;

[0033] When the energy-saving automatic air supplement system continues to supply air but still cannot maintain the internal working pressure of the air rib inflatable column, the continuous air supply system works; the air supply volume of the continuous air supply system is greater than the air leakage volume or the gas loss volume due to damage of the air rib inflatable column, thereby maintaining the internal pressure of the inflatable column, and the internal pressure generated by the air supply is greater than the normal working pressure of the air rib inflatable column and less than the rated maximum working pressure of the air rib inflatable column.

[0034] The beneficial effects of the present utility model:

[0035] The present utility model adopts a gas rib inflatable column film structure with a drawstring net, which solves the limitation of the span of the gas rib film by the PVC material itself and realizes a structural form with a larger span; each gas rib inflatable column and the drawstring net configured for each gas rib inflatable column form an independent structure; the arrangement of the drawstring net enables the gas rib inflatable column to achieve a higher working pressure range, reduces the frequency of overpressure air release and underpressure air supplement, saves energy consumption, and at the same time alleviates the local stress of the gas rib inflatable column; the drawstring net structure and the windproof anchoring are combined, and the overall gas rib film structure transmits the external load through the drawstring net, avoiding the direct stress of the gas rib inflatable column and resulting in local stress concentration.

[0036] The modular design of the drawstring net structure of the present utility model with the gas rib inflatable column in pieces, blocks, groups, etc. simplifies the design workload and reduces the production and processing difficulty (for the processing and production of the PVC film structure, there is no effective mechanized production line at present, and it is basically manual welding processing. The more complex the structure, the greater the self-weight of the structure, and the more difficult it is to ensure the welding quality; this form of single gas rib inflatable column divides the overall structure into several independent small modules, which is easy to produce and process); it is convenient for on-site connection and installation (for this flexible structure of the inflatable film, the more complex the structure system, the easier it is for the film bodies to be intertwined and wound with each other during the process of unpacking and installing at the construction site; while the independent inflatable column structure avoids this situation and is easy to pack and install).

[0037] The present utility model adopts a modular assembly structure form, which is convenient for disassembly, movement, and replacement. Only a single inflatable column needs to be repaired or returned to the factory for repair when it is damaged, and the repair cost is low. When replacing a single gas rib inflatable column, there is no need to disassemble the overall structure. Only the gas rib inflatable columns on both sides of the damaged position of the gas rib inflatable column need to be pulled and fixed with drawstrings to keep the overall structure stable, so as to realize the replacement or repair of a single gas rib inflatable column.

[0038] The utility model adopts a circular arch air rib membrane structure formed by the intersection of multiple cylindrical air rib inflatable columns. The structure has the most uniform stress and the smallest structural deformation, and can constrain the deformation of the circular arc arch structure to the greatest extent.

[0039] The utility model bears the tension through the strap net structure, and the air rib inflatable column relies on internal pressure for support. The combination of the two forms a more stable structural system, increasing the ability of the air rib membrane structure to resist external membrane loads and its own stiffness; the air rib membrane with an external constraint strap net approximately forms an inflatable truss beam.

[0040] Through the layout of the external constraint strap net on the air rib inflatable column, the utility model effectively solves the local stress concentration of the air rib inflatable column caused by reasons such as the increase in the internal pressure of the air rib due to temperature change and the dimensional deviation of the combined connection points of the air rib inflatable columns; the strap net is arranged at the weld position of the air rib inflatable column, which has the function of protecting the body weld, making up for the fact that the strength of the body weld is less than that of the membrane material, and strengthening the weld; the strap net is composed of two inner and outer net structures, and the strap moving ends are reserved at both sides of the middle of the air rib inflatable column. This design can effectively adjust the design deviation and the installation fit deviation, and the installation is more convenient and fast. (The prior art uses snap connection or heat-sealed non-edge connection, which will cause local stress concentration).

[0041] The diagonal strap of the utility model converts the axial outer arc vertical or perpendicular compression (the inflatable column bears bending force) of the air rib inflatable column into axial compression of the air rib inflatable column. The axial compression ability of the inflatable column is relatively strong, far greater than the axial compression and bending resistance ability of the air rib inflatable column.

[0042] The utility model determines the layout method of the diagonal strap according to the layout spacing of the circumferential strap and the specifications of the air rib inflatable column. A diagonal strap from the outer arc to the inner arc and then to the outer arc is a structural stress interval, which converts the axial bending resistance of the outer arc of the air rib inflatable column into axial compression of the air rib inflatable column. The diagonal strap effectively utilizes the axial compression ability of the air rib inflatable column, greatly improving the ability of the air rib inflatable column to resist the bending deformation of external loads; the different inclination angles of the diagonal webbing can be adjusted according to the bending curvature of the inflatable column to achieve the best bending resistance effect. The diagonal straps in different structural stress intervals divide the air rib inflatable column from the whole circular arc arch into multiple circular arcs, restricting the outward deflection deformation of the air rib inflatable column. At the same time, since the PVC membrane material is a flexible material, the processing technology and the production technology level of the base fabric of each membrane material manufacturer vary greatly, and there are different weft skews in the raw materials themselves. After the air rib column is inflated and formed, there may be a twisting phenomenon, and the diagonal strap also restricts the twisting deformation of the air rib column to a certain extent.

[0043] In the present utility model, the external drawstring net and the air rib inflatable column film body adopt an integrated processing technology, and drawstring activities ends are reserved on both sides of the air rib inflatable column for the drawstring net. Since the elongation rate of the drawstring net is less than that of the film material, the drawstring net has a prestress effect after the air rib inflatable column is formed. The integrated processing technology of the drawstring net and the film body greatly simplifies the current installation workload and avoids the probability of on-site installation errors.

[0044] The air rib type membrane structure of the present utility model is composed of an independent air column row arch form with an external restraint drawstring net. Its structure can form a stable structural system by itself, unlike the air-supported membrane structure that requires anti-pulling foundations; and unlike the air-cushion membrane structure that requires a fixed steel structure frame for the fixed edge. Only anchoring fixed points for resisting external wind loads need to be arranged around the bottom periphery of the air rib membrane, and the air rib membrane itself and the drawstring net itself are light in weight, with low requirements for the bearing capacity of the installation site.

[0045] The present utility model adopts a cylindrical air rib inflatable column structure, which has more reasonable force, maximizes the utilization of the strength of the PVC film material itself, and can efficiently utilize the radial and circumferential forces of the base fabric yarns of the film material.

[0046] The air rib inflatable columns of the present utility model adopt modular design according to the span and the diameter of the inflatable column. Each air rib inflatable column is composed of several similar or completely identical unfolding pieces. The air rib inflatable columns are designed according to the width of the PVC film material cloth, and only one weld seam is designed axially for the inflatable column. The weld seam is located in the area with less force on the outermost arc of the inflatable column. Each air rib is composed of several sections of inflatable columns, and the axial weld seams of each inflated part are staggered by a certain interval to form a T-shaped weld seam, avoiding the formation of cross weld seams. The radial and circumferential forces of the film material raw materials are utilized to the greatest extent, the axial weld seam on the inner arc of the air rib inflatable column is avoided, and the weak points of weld seam stress concentration are reduced.

[0047] In the present utility model, the arrangement of the strengthening air ribs further improves the stiffness and stability of the overall structure. In areas with little or no snow, the setting of the strengthening air ribs can appropriately reduce the diameter of the inflatable columns of the overall air ribs and improve the space utilization rate inside the air rib membrane.

[0048] In the present utility model, horizontal connection points are reserved inside the air rib drawstring net for installing the internal tension structure of the air rib. The internal tension structure of the air rib adopts forms such as horizontal tension and diagonal tension. The first function of the internal tension structure of the air rib is to divide the large span into small spans and enhance the anti-deformation ability. Another function is that after the internal drawstrings are connected with cross buckles, the internal drawstrings stabilize the arched contour shape and limit the displacement of the arch. The design of the internal tension structure of the air rib makes up for the obvious fluctuating displacement even under the condition of high internal pressure in the air rib membrane in extreme weather such as extremely strong winds, thereby increasing the overall structural stability.

[0049] This utility model adopts a grouped modular air supply form, which is safer and will not cause the overall structure to become unstable due to the loss of pressure in the local air rib inflatable column; the grouped modularity is conducive to the maintenance and replacement of the air rib inflatable column.

[0050] The overall air rib membrane structure adopts two air supply systems. System 1 is defined as an energy-saving air replenishment system: its characteristic is that after the air rib inflatable column is inflated and formed, the air rib inflatable column itself is completely airtight and has no leakage. Only overpressure exhaust and low-pressure automatic air replenishment need to be carried out according to the internal pressure detection of the air rib. This shape is defined as the preferred system to use, and this system can save energy to the greatest extent and reduce the operating cost. The working pressure of the energy-saving air replenishment system is divided into two working modes: Mode 1 is the normal pressure working state, and Mode 2 is the high-pressure working system for dealing with bad weather such as strong winds and heavy snow. System 2 is defined as a continuous air supply system: its characteristic is that even if there is local air leakage or small-area damage in the air rib membrane, the stable pressure of the air rib inflatable column can still be maintained by relying on a large-air volume fan system, so as to keep the overall structure stable and facilitate the maintenance and temporary use of the membrane body. Brief Description of the Drawings

[0051] Figure 1 It is the overall schematic diagram of the first embodiment of this utility model;

[0052] Figure 2 It is the front view of the uniformly distributed oblique tension belts in the first embodiment of this utility model;

[0053] Figure 3 It is the front view of the two-span oblique tension belts in the first embodiment of this utility model;

[0054] Figure 4 It is the perspective view of the air rib inflatable column plus the tension belt net in the first embodiment of this utility model;

[0055] Figure 5 It is the schematic diagram of the tension belt arrangement style of the air rib inflatable column in the first embodiment of this utility model (circumferential cross-sectional view of the inflatable column);

[0056] Figure 6 It is the schematic diagram of the tension belt connection style between the air rib inflatable columns in the first embodiment of this utility model (circumferential cross-sectional view of the inflatable column);

[0057] Figure 7 It is the schematic diagram of the reserved circumferential pulling points at the upper part of the tension belt net in the first embodiment of this utility model;

[0058] Figure 8 It is the schematic diagram of the reserved axial pulling points at the upper part of the tension belt net in the first embodiment of this utility model;

[0059] Figure 9 It is the schematic diagram of the anchoring form of the air rib inflatable column in the second embodiment of this utility model Figure 1 ;

[0060] Figure 10 is Figure 9 a schematic diagram of removing the configuration block;

[0061] Figure 11 is a schematic diagram of the anchoring form of the air rib inflatable column in the second embodiment of the present invention Figure 2 ;

[0062] Figure 12 is a schematic diagram of the anchoring form of the air rib inflatable column in the second embodiment of the present invention Figure 3 ;

[0063] Figure 13 is a schematic diagram of the anchoring form of the air rib inflatable column in the second embodiment of the present invention Figure 4 ;

[0064] Figure 14 is an enlarged view of the belt adjustable tensioning device in the third embodiment of the present invention;

[0065] Figure 15 is a schematic diagram of the internal pulling structure in the third embodiment of the present invention Figure 1 ;

[0066] Figure 16 is a schematic diagram of the internal pulling structure in the third embodiment of the present invention Figure 2 ;

[0067] Figure 17 is a schematic diagram of the connection between the internal pulling tensioning belt and the air rib inflatable column of the internal pulling structure in the third embodiment of the present invention;

[0068] Figure 18 is a schematic diagram of the adjustable cross buckle of the internal pulling structure in the third embodiment of the present invention;

[0069] Figure 19 is a schematic diagram of the fixed style of the adjustable cross buckle and the belt of the internal pulling structure in the third embodiment of the present invention;

[0070] Figure 20 is a mid-axis sectional view of the air rib membrane in the fourth embodiment of the present invention;

[0071] Figure 21 is a schematic diagram of the connection of the reinforced air rib inflatable column in the fourth embodiment of the present invention;

[0072] Figure 22 is a relative position diagram of the welds of the air rib inflatable column in the fifth embodiment of the present invention;

[0073] Figure 23 is a schematic diagram of the cutting style of the air rib inflatable column in the fifth embodiment of the present invention;

[0074] Figure 24Schematic diagram of the gable wall in the sixth embodiment of the present utility model Figure 1 ;

[0075] Figure 25 Schematic diagram of the gable wall in the sixth embodiment of the present utility model Figure 2 ;

[0076] Figure 26 Schematic diagram of the air supply system in the seventh embodiment of the present utility model.

[0077] In the figure:

[0078] 1. Diagonal stay; 2. Inner arc axial stay; 3. Circumferential stay; 4. Outer arc axial stay; 5. Each cylindrical inflatable column; 6. Single rib inflatable column (whole arc-shaped arched air column); 7. Axial weld; 8. T-shaped weld; 9. Circumferential weld;

[0079] 10. Air supply one-way flow check valve; 11. Energy-saving intermittent air supply device; 12. Continuous air supply device; 13. Pressure relief valve; 14. Energy-saving main air supply pipeline; 15. Energy-saving sub-air supply pipeline; 16. Manual valve; 17. Reinforced rib inflatable column; 18. Grouped rib air supply pipeline; 19. Grouped rib A group;

[0080] 20. Grouped rib B group; 21. Internal tensioning stay; 22. Connection point of internal tensioning stay and rib inflatable column; 23. Adjustable cross buckle; 24. Weft feeding direction of air column cut piece; 25. Radial feeding direction of air column cut piece; 26. Flange quick-release universal interface (can be used as interfaces such as air inlet pipeline, pressure detection, pressure relief valve, spare reserved port, etc.); 27. Free end of axial stay anchorage; 28. Concrete embedded anchor bolt; 29. Fixed angle steel;

[0081] 30. Stay adjustable tensioning device; 31. Ballast plate; 32. Ballast block; 33. Self-locking buckle; 34. Movable end of stay; 35. Connection end of stay; 37. Upper circumferential pulling point of rib inflatable column, 38. Upper axial pulling point of rib inflatable column; 39. Outer cover single-layer cloth;

[0082] 40. Support and force transmission stay; 41. Anchoring stay in the connection direction of row arch; 42. Membrane material; 43. Shape of cut piece and warp and weft distribution of base cloth; 44. Rainproof cloth for the hole of single-layer cloth outside the rib; 45. Gable wall; 46. Entrance and exit passage.

[0083] The attached drawings are only for illustrative purposes and should not be construed as a limitation of this patent; for better illustration of this embodiment, some components in the attached drawings will be omitted, enlarged or reduced, which does not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the attached drawings may be omitted. Detailed implementation manners

[0084] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0085] Embodiment 1:

[0086] As Figures 1 to 8 shown, this embodiment provides a novel air-ribbed inflatable membrane structure, including a main structure formed by combining multiple independent air-rib inflatable columns 6 in a front-back side-by-side form.

[0087] A grid strap structure is laid outside each air-rib inflatable column. The grid strap structure is composed of axial straps (including inner arc axial straps 2 and outer arc axial straps 4), circumferential straps 3, and diagonal straps 1. The axial straps, circumferential straps 3, and diagonal straps cooperate to form a cross-shaped structure.

[0088] The diagonal strap 3 is arranged along the geodesic direction from the outermost arc position of the air-rib inflatable column to the innermost arc position of the air-rib inflatable column. The diagonal strap can be arranged between two circumferential straps (as Figure 2 shown), or can be arranged between three circumferential straps (as Figure 3 shown), so that the diagonal strap cooperates with the axial straps and circumferential straps to form a cross-shaped structure.

[0089] In other embodiments, the diagonal strap can also be arranged between more circumferential straps. The more circumferential webbings the diagonal strap crosses, the more obvious the bending resistance effect achieved by the diagonal strap.

[0090] Determine the layout method of the diagonal strap according to the layout spacing of the circumferential strap and the specifications of the air-rib inflatable column. A section of diagonal strap from the outer arc to the inner arc and then to the outer arc is a structural stress interval, which converts the outer arc axial bending resistance of the air-rib inflatable column into the axial compressive resistance of the air-rib inflatable column. The diagonal strap effectively utilizes the axial compressive capacity of the air-rib inflatable column, greatly improving the ability of the air-rib inflatable column to resist bending deformation under external loads; the different inclination angles of the diagonal webbing can be adjusted according to the bending curvature of the inflatable column to achieve the best bending resistance effect. The diagonal straps in different structural stress intervals divide the air-rib inflatable column from the whole circular arc arch into multiple circular arcs, restricting the outward deflection of the air-rib inflatable column; at the same time, the diagonal straps in the strap network also have the ability to resist the twisting of the air-rib inflatable column.

[0091] Specifically, the grid strap structure is divided into an outer arc strap network located on the outer arc side of the air-rib inflatable column and an inner arc strap network located on the inner arc side of the air-rib inflatable column. The inner arc strap network and the outer arc strap network are fixedly connected to the membrane body of the air-rib inflatable column. The air-rib membrane body and the strap network structure adopt an integrated processing technology, which not only ensures the accuracy of the strap network position but also reduces the workload of on-site strap network assembly, greatly reducing the deviation probability of the combined connection between air-rib inflatable columns.

[0092] The outer arc tension belt net and the inner arc tension belt net are made of materials such as webbing with an elongation rate less than that of the membrane material, aging resistance, and ultraviolet resistance. Since the air rib inflatable column is completely constrained by the external tension belt net, the working pressure range inside the air rib inflatable column is increased; with the same membrane material strength, the air rib inflatable column with the external constraint tension belt net can bear a higher internal pressure. Since the elongation rate of the tension belt net is less than that of the membrane material, the tension belt net approximately achieves the effect of prestress.

[0093] The outer arc tension belt net and the inner arc tension belt net form connection and fixation points on the front and rear sides of the air rib inflatable column. Adjacent air rib inflatable columns 6 are interconnected through the connection and fixation points, and the following specific scheme is adopted;

[0094] On the same air rib inflatable column, the circumferential tension belt or diagonal tension belt of the outer arc tension belt net is provided with a tension belt movable end 34 of a certain length on the front side of the air rib inflatable column, and a tension belt connection end 35 is provided on the rear side;

[0095] On the same air rib inflatable column, the circumferential tension belt or diagonal tension belt of the inner arc tension belt net is provided with a tension belt connection end 35 on the front side of the air rib inflatable column, and a tension belt movable end 34 of a certain length is provided on the rear side.

[0096] The above-mentioned tension belt movable end 34 and tension belt connection end 35 serve as connection and fixation points.

[0097] Between adjacent air rib inflatable column one and air rib inflatable column two, the tension belt movable end 34 of air rib inflatable column one is connected to the tension belt connection end 35 of air rib inflatable column two through a self-locking buckle 33, and the tension belt connection end 35 of air rib inflatable column one is connected to the tension belt movable end 34 of air rib inflatable column two.

[0098] On the side of the air rib inflatable column at the gable wall 45 position, the tension belt movable end of the outer arc tension belt net is connected to the tension belt connection end of the inner arc tension belt net, or the tension belt movable end of the inner arc tension belt net is connected to the tension belt connection end of the outer arc tension belt net.

[0099] Through the above scheme, the inner arc tension belt net and the outer arc tension belt net are provided with tension belt movable ends of a certain length on both sides of the air rib inflatable column. The tension belt movable ends avoid the tangent position of the air rib inflatable column, facilitating the connection between the air rib inflatable columns and subsequent replacement. The air rib inflatable column can be replaced at any time without affecting the structural stability.

[0100] The utility model adopts a modular assembly structure form, which is convenient for disassembly, installation, and movement. If a single inflatable column is damaged, only single-column repair or return to the factory for repair is required, and the repair cost is low. When replacing a single air rib inflatable column, the overall structure does not need to be disassembled. Only the air rib inflatable columns on both sides of the damaged position of the air rib inflatable column need to be pulled and fixed by the tension belt to maintain the stability of the overall structure, so as to realize the replacement or repair of a single air rib inflatable column.

[0101] And because the external tie net of the above-mentioned air rib inflatable column is connected between two adjacent air rib inflatables, the oblique tie straps form a fixed connection in a triangular direction, so that a stable structure is formed between the air rib inflatable columns, ensuring that the inflatable columns will not undergo relative displacement when inflated and under pressure.

[0102] The outer arc pull belt net and the inner arc pull belt net are also reserved with an upper circumferential pulling point 37 of the air rib inflatable column and an upper axial pulling point 38 of the air rib inflatable column for strengthening ribs, single-layer cloth, air rib replacement, arch direction pulling, etc.

[0103] The utility model bears the tension through the drawstring net structure, and the air rib inflatable column relies on internal pressure for support. The combination of the two forms a more stable structural system, which increases the ability of the air rib membrane structure to resist external membrane load and its own rigidity; the air rib membrane of the externally constrained drawstring net approximately forms an inflatable truss beam.

[0104] In the utility model, each air rib inflatable column and the drawstring net configured for each air rib inflatable column form an independent structure; the arrangement of the drawstring net enables the air rib inflatable column to achieve a higher working pressure range, reduces the frequency of overpressure deflation and underpressure replenishment, saves energy, and also alleviates the local stress on the air rib inflatable column; the drawstring net structure is combined with the windproof anchor, and the overall air rib membrane structure is subjected to external loads and the force is transmitted through the drawstring net, thereby avoiding the air rib inflatable column being directly stressed and causing local stress concentration.

[0105] The utility model effectively solves the local stress concentration of the air rib inflatable column caused by the increase of the internal pressure of the air rib due to temperature change and the size deviation of the combined connection point of the air rib inflatable column through the layout of the external constraint drawstring net of the air rib inflatable column. The drawstring net is composed of an inner and outer two-piece net structure, and movable ends of the drawstrings are reserved on both sides of the middle of the air rib inflatable column. This design can effectively adjust the design deviation and the installation matching deviation, and the installation is more convenient and quick.

[0106] The modular design of the pull-belt net structure and the air-ribbed inflatable columns in slices, blocks, groups, etc. of the utility model simplifies the design workload, reduces the difficulty of production and processing, and is convenient for connection and installation on the construction site.

[0107] Embodiment 2:

[0108] like Figures 8 to 9 As shown, this embodiment, based on the first embodiment, discloses a design scheme for fixing the integral air-ribbed inflatable membrane structure on the ground.

[0109] The inner arc axial tension belt 2 and the outer arc axial tension belt 4 are provided with axial tension belt anchoring free ends at the bottom of the air rib inflatable column. The axial tension belt anchoring free ends are connected to the tension belt adjustable tensioning device, and the tension belt adjustable tensioning device is fixed on the fixed angle steel 29, and the fixed angle steel 29 is anchored on the ground foundation. The fixed angle steel 29 at the air rib anchoring point can be set in sections or continuously.

[0110] The tension belt adjustable tensioning device is structurally similar to a lockable winding mechanism, which is used to adjust the tension of the anchoring connection between the overall air rib structure and the ground, and prevent uneven stress on the axial tension belts at different anchoring points. In this embodiment, the winding mechanism is locked by a ratchet and pawl. As Figure 14 shown.

[0111] In this embodiment, the ground foundation is a ballast plate 31, and the ballast plate is equipped with ballast blocks 32, as Figures 9 to 10 shown.

[0112] In other embodiments, the ground foundation can also be a concrete embedded anchor bolt 28, as Figure 11 shown.

[0113] In other embodiments, the ground foundation can also be a square ballast block. The square ballast block is convenient for processing and transportation and can be used as an installation reference. The integral fixed angle steel is convenient for connecting the ballast blocks into a whole, as Figure 12 shown.

[0114] In other embodiments, the ground foundation can also be a circular ballast block. The circular ballast block is located at the bottom of the air rib inflatable column, and it can be wrapped with a membrane material to form an integral appearance with the inflatable column, as Figure 13 shown.

[0115] This embodiment adopts the anchoring form of internal and external heavy object ballasting, which will not damage the original ground. The ballasted heavy objects are prefabricated and assembled structures, which are beneficial to modular production and convenient for the overall structure to be moved and disassembled; the integral anchoring angle steel is beneficial to connecting the anchoring boundaries into a whole structure and avoiding misalignment of the anchoring boundaries. The bottom of the axial tension belt adopts a movable end fixing style to adjust the installation deviation of the air rib inflatable column and relieve the local stress concentration at the wind-resistant anchoring point.

[0116] The wind-resistant fixing and anchoring points of the air rib membrane are located on the inner and outer sides at the bottom of the air rib inflatable column, avoiding contact between hard objects and the membrane body of the air rib inflatable column and preventing membrane body wear.

[0117] Embodiment Three:

[0118] As Figures 15 to 19 shown, on the basis of Embodiment One or Two, this embodiment adds an internal tension structure to the overall air rib type inflatable membrane structure.

[0119] The internal tension structure of the air rib includes an internal tensioning strap 21. The internal tensioning strap 21 has transverse tensioning, diagonal tensioning, etc. The anchoring points of the internal tensioning strap 21 are located at the intersection point 22 of the circumferential strap and the inner arc axial strap. The intersection points of different internal tensioning straps within the same air rib inflation column are fixedly connected by an adjustable cross buckle 23.

[0120] The first function of the internal tension structure of the air rib is to divide the large span into small spans, enhancing the anti-deformation ability. Another function is that after the internal straps are connected by cross buckles, the internal straps stabilize the arched contour shape and limit the displacement of the arch.

[0121] Embodiment 4:

[0122] As Figures 20 to 21 shown, on the basis of Embodiment 2, reinforcing air rib inflation columns 17 are arranged at certain intervals inside the main structure.

[0123] The reinforcing air rib inflation columns 17 are clamped between two air rib inflation columns 6 of the main structure. The central axis of the reinforcing air rib inflation columns 17 is located in the plane where the tangent line between the air rib inflation columns in the main structure is located. The reinforcing air rib inflation columns 17 are used to enhance the ability of the air rib inflation columns to resist external loads.

[0124] A grid strap structure is also laid outside the reinforcing air rib inflation columns 17. The grid strap structure of the reinforcing air rib inflation columns 17 is connected to the grid strap structure of the air rib inflation columns of the main structure through connecting straps.

[0125] The arrangement of the reinforcing air ribs in the present utility model further enhances the stiffness and stability of the overall structure. In areas with little or no snow, the setting of the reinforcing air ribs can appropriately reduce the diameter of the inflation columns of the overall air ribs and improve the space utilization rate inside the air rib membrane.

[0126] As Figure 1 and Figure 20 shown, on the basis of Embodiment 2, a rainproof sealing outer cover 39 is further added.

[0127] A rainproof sealing outer cover 39 is arranged outside the air rib inflation column. The outer cover is made of a lightweight and high-strength single-layer cloth film material. The outer surface of the outer cover has the properties of anti-ultraviolet, self-cleaning, aging resistance, and can be spray-painted with patterns. The outer cover is an assembled structure and is fixed to the main structure through circumferential tensioning points, axial tensioning points, etc. on the strap net, which is convenient for later replacement. The appearance of the air rib membrane can be continuously changed through the spray painting and pattern decoration of the outer cover, and it can also be used as an advertising space.

[0128] A rainproof and sealed outer cover 39 is provided with a support and force - transmitting strap 40 between the main structures. Its functions are: First, it is used to support the single - layer cloth of the outer cover; Second, it is used for anchoring and force - transmitting in the direction of the arch connection. The support and force - transmitting strap 40 is also connected with an anchoring strap 41 in the direction of the arch connection at both the front and rear ends.

[0129] The bottom of the rainproof and sealed outer cover 39 extends to the lower part of the fixed angle steel 29 to achieve the sealing of the overall structure and form a water - spreading surface. A glass wool quilt or thermal insulation cotton can be arranged between the single - layer cloth of the outer cover and the air - rib inflatable column. Combined with the air - filled layer formed by the inflatable column, it achieves a good thermal insulation effect for the overall structure.

[0130] The rainproof and sealed outer cover 39 is also provided with a rainproof cloth 44 for the opening of the single - layer cloth outside the air - rib above the ground foundation.

[0131] The air - rib membrane is greatly affected by solar radiation. The detachable rainproof and sealed outer cover can not only be replaced regularly but also prevent the air - rib inflatable column from being directly irradiated by the sun, thus alleviating the drastic change of the pressure inside the inflatable column affected by temperature; the rainproof and sealed outer cover 39 ensures that the appearance of the air - rib membrane is relatively flat through pulling and fixing or arranging support straps inside, making it easy to drain rainwater and snow.

[0132] Embodiment Five:

[0133] As Figures 22 to 23 shown, on the basis of Embodiment One or Two or Three or Four, this embodiment discloses the structural design of a single air - rib inflatable column 6. The structure of the reinforced air - rib inflatable column 17 is the same as that of the air - rib inflatable column 6.

[0134] The cut - pieces of the air - rib inflatable column are all designed according to the width of the membrane material cloth, completely conforming to the warp and weft directions of the base fabric yarns of the PVC membrane material 42, so that the air - rib inflatable column maximally utilizes the performance of the original membrane material. In the figure, 24 indicates the weft - direction cutting direction of the air - column cut - piece, 25 indicates the radial - direction cutting direction of the air - column cut - piece, and 43 indicates the shape of the cut - piece and the distribution of the base fabric warp and weft directions.

[0135] The sectional design of the air - rib inflatable column is no longer limited by the width of the membrane material 42. The axial length of each cylindrical inflatable column 5 can be increased by adding circumferential welds in the middle of the air - rib inflatable column. The circumferential length of the inflatable column utilizes the length of the membrane material cloth. If the length of the membrane material cloth is not limited, the diameter of the air - rib inflatable column is not limited. There is only one axial weld 7 in the circumferential direction of the air - rib inflatable column (the length direction of the cloth width is the radial direction of the base fabric yarns, with strong tensile strength; while the axial force is relieved by the strap to reduce the stress on the circumferential weld), minimizing the number of welds of the air - rib inflatable column and reducing the probability of air leakage and weld breakage.

[0136] Moreover, the axial weld 7 is arranged on the outer arc of the air rib inflatable column and is stagger-welded. All the welds of the air rib inflatable column are T-shaped welds 8, without cross welds; and due to the restraint of the axial tension belt, the stress on the circumferential weld 9 is effectively relieved; external tension belts are evenly distributed outside the position where the weld is located to protect the weld.

[0137] In this embodiment, the film material of the air rib inflatable column adopts a light-shielding film material, which avoids the energy transfer of solar radiation. It is also possible to add a film material procurement area by changing the light transmittance of the local film body, locally setting windows and other measures.

[0138] The air rib inflatable column adopts a heat-sealing welding process, which is a closed-air structure form, saving the operation energy consumption to the greatest extent. The air rib inflatable column itself has no air leakage under the condition of bearing internal pressure. Wear-resistant materials are provided at the bottom ends of the air rib inflatable column to prevent the bottom of the air rib inflatable column from being worn and leaking air during the installation process and use process.

[0139] A general flange quick-release universal interface 26 is provided at the upper part of the air rib inflatable column, which is used to connect the air filling pipeline, differential pressure inspection sensor, pressure relief valve, spare reserved port, etc.

[0140] The air rib inflatable column of the present utility model adopts a modular design according to the span and the diameter of the inflatable column. Each air rib inflatable column is composed of several similar or completely identical unfolded pieces. The air rib inflatable column is designed according to the width of the PVC film material, and only one weld is designed axially on the inflatable column. The weld position is in the area with less force on the outermost arc of the inflatable column. Each air rib is composed of several sections of inflatable columns, and the axial welds of each inflatable part are staggered by a certain interval to form a T-shaped weld, avoiding the formation of cross welds, making the best use of the warp and weft forces of the film material raw material, avoiding the axial weld on the inner arc of the air rib inflatable column, and reducing the weak points of weld stress concentration.

[0141] Embodiment Six:

[0142] As Figures 24 to 25 shown, on the basis of Embodiment One or Two or Three or Four or Five, this embodiment discloses the plugging design of the front and rear gable walls.

[0143] The plugging of the front and rear gable walls 45 can adopt a single-layer cloth form (as Figure 24 shown), or the way of inflatable columns with double-layer air bags (as Figure 25 shown) to form the enclosure and closure of the overall structure; the gable walls still adopt the form of air rib inflatable columns and can still use the external restraint net. The entrance and exit passage 46 can be arranged on the front and rear gable walls or on the side where the air rib inflatable columns are spliced. The entrance and exit passage door is an assembled structure and is inlaid with the entrance and exit door opening. The flexible film material is used to connect and transition the entrance and exit passage door and the entrance and exit door opening to achieve sealing.

[0144] Embodiment Seven:

[0145] As Figure 26 shown, on the basis of Embodiment 1 or 2 or 3 or 4 or 5 or 6, this embodiment discloses a gas supply system for supplying gas to the gas rib inflatable columns. The gas supply system includes an energy-saving air replenishing system and a continuous gas supply system. Figure 26 The filled pattern and the unfilled pattern in it are used to distinguish different groups of gas ribs.

[0146] The gas rib inflatable columns are grouped for gas supply and are divided into alternately arranged Group A of grouped gas ribs 19 and Group B of grouped gas ribs 20 in the front-back direction. Group A of grouped gas ribs 19 includes two gas rib inflatable columns of the main structure and one reinforced gas rib inflatable column. Group B of grouped gas ribs includes two gas rib inflatable columns of the main structure. Group A of grouped gas ribs 19 is defined as the key stress-bearing inflatable framework. Even if all other gas ribs lose pressure, the key stress-bearing inflatable framework still ensures the overall structure does not become unstable.

[0147] Group A of grouped gas ribs 19 and Group B of grouped gas ribs 20 are each connected to the energy-saving gas supply branch pipe 15 through the grouped gas rib gas supply pipeline 18. A pressure relief valve 13 is also provided on the grouped gas rib gas supply pipeline. The energy-saving gas supply branch pipe 15 is connected to the energy-saving gas supply main pipe 14. A gas supply one-way flow check valve 10 is provided on the energy-saving gas supply branch pipe 15. The energy-saving gas supply main pipe 14 is connected to the energy-saving intermittent gas supply device 11 to form an energy-saving air replenishing system.

[0148] In this embodiment, the pressure relief valve 13 is provided on the grouped gas rib gas supply pipeline. In other embodiments, the pressure relief valve 13 can also be provided on the flange quick-release universal interface 26 of the gas rib inflatable column.

[0149] The working principle of the energy-saving air replenishing system is as follows: When the pressure in the inflatable column cavity exceeds the working pressure range, it automatically deflates; when the pressure in the inflatable column cavity is lower than the working pressure range, it automatically replenishes air and pressurizes. There is no energy loss in the energy-saving air replenishing system during other periods.

[0150] The working principle of the continuous gas supply system is as follows: It is used in the condition where there is local air leakage or local damage in the gas rib inflatable column, and the energy-saving automatic air replenishing system continues to supply gas but still cannot maintain the internal working pressure of the gas rib inflatable column. The remarkable feature of the continuous gas supply system is that the gas supply fan has a large gas supply volume, which is much larger than the gas leakage volume or the gas loss volume due to damage of the gas rib inflatable column, so as to maintain the internal pressure of the inflatable column. Moreover, the internal pressure generated by the gas supply is greater than the normal working pressure of the gas rib inflatable column and less than the rated maximum working pressure of the gas rib inflatable column. The continuous gas supply system can supply gas to a group of gas rib inflatable columns or a single gas rib inflatable column.

[0151] The overall air rib membrane structure adopts two sets of air supply systems. One is the energy-saving air replenishment system: Its characteristic is that after the air ribs and air columns are inflated and formed, the air rib inflatable columns are completely airtight and leak-free by themselves. Only overpressure exhaust and low-pressure automatic air replenishment are required according to the internal pressure detection of the air ribs. This shape is defined as the preferred system, which can save energy to the greatest extent and reduce operating costs. The working pressure of the energy-saving air replenishment system is divided into two working modes: Mode 1 is the normal pressure working state, and Mode 2 is the high-pressure working system for coping with bad weather such as strong winds and heavy snow. The other is the continuous air supply system: Its characteristic is that even if there is local air leakage or small-area damage to the air rib membrane, the air rib inflatable columns can still be stabilized by a large-volume fan system, so as to maintain the stability of the overall structure and facilitate the maintenance and temporary use of the membrane body.

[0152] The air rib membrane structure is equipped with a standby power supply. In the case of power failure of the commercial power, the power supply can be switched between the two power sources to seamlessly maintain the power supply and ensure the safety of the overall structure. Since the air rib inflatable columns adopt an airtight structure, when the temperature change is not large, there is basically no overpressure air leakage in the air rib inflatable columns, so there is no need for air replenishment. Therefore, the air rib membrane structure avoids the dependence on continuous power supply like the air-supported membrane structure for the overall structure.

[0153] Through the description of the above embodiments, the remarkable feature of the air rib type inflatable membrane structure of the present utility model is safety:

[0154] 1. Through the external restraint belt structure, the circumferential restraint belt makes up for the insufficient strength of the PVC material itself, thereby increasing the inflation pressure and improving the stiffness of the overall air rib structure.

[0155] 2. The diagonal restraint belt can effectively improve the local bending resistance of the air rib structure.

[0156] 3. The external restraint belt forms a grid structure, which has a significant protective effect on the inner arc of the air rib (the inner arc of the arch column is the stress concentration position and is a weak point in force).

[0157] 4. The air ribs are grouped for air supply at intervals, which can avoid the instability of the structure caused by the damage of individual air columns.

[0158] 5. The arch shape of the air column can resist pressure and has a supporting effect. The external restraint belt is flexible and mainly bears tension. The form of one pulling and one supporting enhances the ability to resist external loads, and the restraint belt grid avoids the disadvantage of local stress on a single windproof rope. Therefore, this new air rib structure is proposed from the perspective of safety.

[0159] At the same time, there are also innovations in other aspects:

[0160] 1. The airtight process continuous inflation structure can effectively save energy.

[0161] 2. The design and processing of both the air ribs and the external restraint straps can be modularized, reducing production costs and making installation more convenient.

[0162] 3. This form can be applied to both large spans and small spans to increase stiffness.

[0163] The utility model forms a pneumatic ribbed membrane structure with a new type of external restraint strap network. The pneumatic ribbed membrane structure is composed of multiple independent inflatable columns combined in a side-by-side form. By breaking through the tensile strength limit of the PVC membrane material through the external restraint strap network of the inflatable columns, a pneumatic ribbed membrane structure with a larger span is realized. The internal pressure of the pneumatic rib inflatable columns forms the structural support force, and the structural force of the external restraint strap network is mainly tensile. In this way, a hybrid structural form of internal air pressure support and external strap network pull is formed, and its structural form is more stable and has a strong load resistance. The pneumatic rib inflatable column structure of the external restraint strap network alleviates the local stress concentration of the inner arc caused by the self-loading characteristics of the circular arc arch column, and effectively improves the safety of the overall structure.

[0164] The pneumatic ribbed membrane structure with a strap network of the utility model increases the working range of the internal pressure of the pneumatic rib inflatable columns, reduces the working frequency of overpressure air leakage and loss of pressure automatic air closure of the inflatable columns, and reduces unnecessary energy consumption. The diagonal straps in the external restraint strap network have the function of restraining the outward deflection of the overall pneumatic rib inflatable columns and preventing the twisting of the pneumatic rib inflatable columns after forming due to the weft inclination of the material itself. The strap network also effectively solves the problems of anchoring and fixing of the pneumatic ribbed membrane structure and the connection and combination between the pneumatic rib inflatable columns. The airtight structure of the pneumatic rib inflatable columns operates more energy-efficiently in a continuous air supply mode.

[0165] The pneumatic ribbed membrane structure with this new type of external restraint strap network of the utility model can be modularly designed and prefabricated in the factory, greatly reducing the processing difficulty, making the construction and installation fast and convenient, significantly reducing the project construction cost, and being convenient for demolition, relocation and repeated use. Even if individual pneumatic rib inflatable columns are locally damaged, only the damaged inflatable columns need to be replaced or repaired, without the need for overall repair or replacement like the frame pneumatic rib membrane.

[0166] Through the setting of strengthened air ribs, air rib group air supply, and two sets of air supply system modes, the utility model makes the overall pneumatic rib membrane structure more stable and reliable. Through multiple preventive measures, the safety of the overall pneumatic rib membrane structure is effectively guaranteed. Even if local air ribs are damaged and deflated, it still does not affect the stability of the overall air rib structure, and it is easy to replace and repair later.

[0167] Of course, this form of pneumatic ribbed membrane structure is not limited to the application in sports stadiums, and this pneumatic ribbed membrane structure form can be adopted in large-span temporary enclosed places.

[0168] The above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: the present invention can still be modified or equivalently replaced, and any modification or partial replacement without departing from the spirit and scope of the present invention shall be covered by the scope of the claims of the present invention.

[0169] If terms such as "first" and "second" are used in this article to define components, those skilled in the art should be aware that the use of "first" and "second" is only for the convenience of describing the present invention and simplifying the description. Without additional statements, the above terms have no special meanings.

[0170] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0171] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

Claims

1. A novel air rib type inflatable membrane structure, comprising a main structure formed by combining multiple independent air rib inflatable columns in a front-back side-by-side form, characterized in that: A grid strap structure is laid outside each air rib inflatable column. The grid strap structure consists of axial straps, circumferential straps, and diagonal straps. Connection and fixation points are provided on the front and rear sides of the air rib inflatable column for the grid strap structure, and adjacent air rib inflatable columns are interconnected through the connection and fixation points.

2. The novel air ribbed inflatable membrane structure according to claim 1, characterized in that: The grid strap structure is divided into an outer arc strap net located on the outer arc side of the air rib inflatable column and an inner arc strap net located on the inner arc side of the air rib inflatable column. The outer arc strap net and the inner arc strap net form connection and fixation points on the front and rear sides of the air rib inflatable column.

3. The novel air-ribbed inflatable membrane structure according to claim 2, characterized in that: The connection and fixation points are set using Scheme 1 or Scheme 2. Scheme 1: On the same air rib inflatable column, the outer arc strap net has a strap movable end of a certain length provided on the front side of the air rib inflatable column and a strap connection end provided on the rear side. On the same air rib inflatable column, the inner arc strap net has a strap connection end provided on the front side of the air rib inflatable column and a strap movable end of a certain length provided on the rear side. The above-mentioned strap movable end and strap connection end serve as the connection and fixation points. Scheme 2: On the same air rib inflatable column, the outer arc strap net has a strap connection end provided on the front side of the air rib inflatable column and a strap movable end of a certain length provided on the rear side. On the same air rib inflatable column, the inner arc strap net has a strap movable end of a certain length provided on the front side of the air rib inflatable column and a strap connection end provided on the rear side. The above-mentioned strap movable end and strap connection end serve as the connection and fixation points. Between adjacent air rib inflatable column 1 and air rib inflatable column 2, the strap movable end of air rib inflatable column 1 is connected to the strap connection end of air rib inflatable column 2, and the strap connection end of air rib inflatable column 1 is connected to the strap movable end of air rib inflatable column 2. On the side of the air rib inflatable column at the gable wall position, the strap movable end of the outer arc strap net is connected to the strap connection end of the inner arc strap net, or the strap movable end of the inner arc strap net is connected to the strap connection end of the outer arc strap net.

4. The novel air-ribbed inflatable membrane structure according to claim 2, characterized in that: The inner arc strap net and the outer arc strap net are fixedly connected to the membrane body of the air rib inflatable column.

5. The novel air ribbed inflatable membrane structure according to claim 2, characterized in that: The diagonal strap extends from the outermost arc position of the air rib inflatable column to the innermost arc position of the air rib inflatable column. The diagonal strap is arranged between multiple circumferential straps, so that the diagonal strap cooperates with the axial strap and the circumferential strap to form a cross structure.

6. The novel air ribbed inflatable membrane structure according to claim 2, characterized in that: The axial strap has an axially strap anchoring free end provided at the bottom of the air rib inflatable column. The axially strap anchoring free end is connected to a strap adjustable tensioning device, and the strap adjustable tensioning device is fixed on the ground foundation.

7. The novel air ribbed inflatable membrane structure according to claim 2, characterized in that: It further includes an internal pulling structure inside the air rib. The internal pulling structure inside the air rib includes an internal pulling and tensioning strap. The anchoring point of the internal pulling and tensioning strap is located at the intersection of the circumferential strap and the inner arc axial strap. The intersection points of different internal pulling and tensioning straps inside the same air rib inflatable column are fixedly connected through an adjustable cross buckle.

8. The novel air ribbed inflatable membrane structure according to claim 1, characterized in that: The air rib inflatable column is composed of several similar or identical unfolded sheets. The axis heat-sealed weld of the air rib inflatable column is arranged on the outer arc of the air rib inflatable column and is stagger-welded to form a T-shaped weld.

9. The novel air rib inflatable membrane structure according to any one of claims 1-8, characterized in that: Reinforcing air rib inflatable columns are arranged at regular intervals inside the main structure, and the reinforcing air rib inflatable columns are clamped between two air rib inflatable columns of the main structure; a grid strap structure is also laid outside the reinforcing air rib inflatable columns, and the grid strap structure of the reinforcing air rib inflatable columns is connected to the grid strap structure of the air rib inflatable columns of the main structure through a connecting strap.

10. The novel air-ribbed inflatable membrane structure according to claim 9, characterized in that: It also includes a gas supply system for supplying gas to the air rib inflatable columns, and the gas supply system includes an energy-saving air replenishing system and a continuous gas supply system; The air rib inflatable columns are grouped for gas supply, and are divided into alternately arranged grouped air rib group A and grouped air rib group B in the front-back direction. The grouped air rib group A includes several air rib inflatable columns of the main structure and at least one reinforcing air rib inflatable column, and the grouped air rib group B includes several air rib inflatable columns of the main structure; The grouped air rib group A and the grouped air rib group B are respectively connected to the energy-saving gas supply branch pipeline through the grouped air rib gas supply pipeline. The energy-saving gas supply branch pipeline is connected to the energy-saving gas supply main pipeline, and the energy-saving gas supply main pipeline is connected to the energy-saving intermittent gas supply device to form an energy-saving air replenishing system; It also includes a pressure relief valve, and the pressure relief valve is arranged on the grouped air rib gas supply pipeline, or the pressure relief valve is arranged on the common flange interface of the air rib inflatable column; When the energy-saving air replenishing system is working, when the pressure in the inflatable column cavity exceeds the working pressure range, it automatically discharges air, and when the pressure in the inflatable column cavity is lower than the working pressure range, it automatically replenishes air and pressurizes; The grouped air rib gas supply pipeline is also connected with a continuous gas supply device to form a continuous gas supply system; the continuous gas supply system supplies gas to the grouped air rib inflatable columns or supplies gas to a single air rib inflatable column; When the energy-saving automatic air replenishing system continues to supply gas and still cannot maintain the internal working pressure of the air rib inflatable column, the continuous gas supply system works; the air supply volume of the continuous gas supply system is greater than the air leakage volume or the gas loss caused by damage of the air rib inflatable column, so as to maintain the internal pressure of the inflatable column, and the internal pressure generated by the gas supply is greater than the working pressure of the air rib inflatable column and less than the rated maximum working pressure of the air rib inflatable column.

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