Hangar structure with self-repairing function and construction method thereof

Abstract

The application discloses a hangar structure with a self-repairing function and a construction method thereof, and the hangar structure comprises a support arch, the support arch is fixed on a hangar runway through pile foundations at both ends, a buffer energy-absorbing layer, a gradient honeycomb constraint layer, a microbial mineralization soil covering layer and an ecological wind erosion prevention layer are sequentially distributed on the top of the support arch from bottom to top, and a flexible damping connector is arranged between the buffer energy-absorbing layer and the gradient honeycomb constraint layer. The protection mode of the top structure of the arch is optimized, the light honeycomb structure is used as a soil skeleton, and the microbial mineralization is used as a soil cementing means, so that the soil covering protection layer which is self-stable, wind-erosion-resistant, blast-resistant and light-weighted is formed, the gradient honeycomb constraint layer can lock the soil and limit the soil flow, the remaining gradient support units still have a limiting effect after the local structure of the gradient honeycomb constraint layer is damaged, and the bearing capacity and the overall stability of the structure are significantly improved.

Description

Technical Field

[0001] This invention belongs to the field of fighter jet hangar technology, specifically relating to a hangar structure with self-repair function and its construction method. Background Technology

[0002] Air strikes have become the main combat style in modern warfare, directly affecting the course and outcome of wars. Due to the increasing transparency, high precision, and destructive power of modern warfare, it is very difficult to store and protect large fixed targets such as flat-ground airfields. At the same time, the increasing number of fighter jets necessitates the construction of military protective facilities such as underground bunkers and hidden hangars.

[0003] Traditional underground bunkers use an arch frame and soil covering method. This soil covering method has a loose connection structure, and the soil is lost under strong winds. The soil covering has low compressive and erosion resistance, and it is easy to soften when it rains. Under heavy rain conditions, there is a problem of soil erosion. The thick soil covering layer leads to the structural weight. Under the impact of an explosion, the soil collapses and becomes void. The steel-concrete arch shell and the soil covering cannot cooperate in bearing the force. Later maintenance is difficult.

[0004] Therefore, it is necessary to research and develop a hangar structure with self-healing function and its construction method to solve the above problems. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a hangar structure with self-healing function and its construction method. By optimizing the protection method of the top structure of the arch frame, using a lightweight honeycomb structure as the soil skeleton, and using microbial mineralization as the soil bonding method, a self-stabilizing, wind-erosion-resistant, explosion-resistant, and lightweight soil cover protective layer is formed, thereby solving the above-mentioned shortcomings of traditional soil cover.

[0006] The present invention provides the following technical solution: A hangar structure with self-healing function includes a supporting arch frame. The two ends of the supporting arch frame are fixed to the hangar runway by pile foundations. The top of the supporting arch frame is distributed from bottom to top with a buffer energy absorption layer, a gradient honeycomb constraint layer, a microbial mineralized soil covering layer and an ecological wind erosion prevention layer. A flexible damping connector is provided between the buffer energy absorption layer and the gradient honeycomb constraint layer. The gradient honeycomb constraint layer includes several uniformly distributed gradient support units. Each gradient support unit includes multiple regular hexagonal hollow bricks. The size of the multiple regular hexagonal hollow bricks that make up the same gradient support unit decreases from top to bottom. Gradient channels penetrate the inner side of the regular hexagonal hollow bricks, and multiple regular hexagonal hollow bricks are nested and combined sequentially through the gradient channels. Filling soil is provided in the gap between each two adjacent gradient support units. The hangar structure also includes a distributed monitoring system and a microfluidic circulation mineralization operation and maintenance system. The distributed monitoring system includes monitoring wells and monitoring stations. The microfluidic circulation mineralization operation and maintenance system includes a supply module, a primary distribution network, a secondary distribution network, and a tertiary capillary network. The primary distribution network is evenly distributed inside the ecological wind erosion prevention layer, the secondary distribution network is evenly distributed inside the microbial mineralization cover layer, and nozzles are installed on the surfaces of the primary and secondary distribution networks. The tertiary capillary network is evenly distributed inside the gradient honeycomb constraint layer. The output end of the primary distribution network is connected to the input end of the secondary distribution network, and the output end of the secondary distribution network is connected to the input end of the tertiary capillary network. The tertiary capillary network is buried in the fill soil. The microbial mineralization nutrient solution is introduced into the gradient honeycomb constraint layer, the microbial mineralization cover layer, and the ecological wind erosion prevention layer through the microfluidic circulation mineralization operation and maintenance system. A flexible ball joint is provided at the network node of the tertiary capillary network. The flexible ball joint is provided with multiple flexible output ports, and the flexible output ports are provided in accordance with the interlocking joints of two adjacent regular hexagonal hollow bricks.

[0007] Preferably, the flexible ball joint includes a rigid outer shell and a water-storing inner shell. The water-storing inner shell is coaxially disposed inside the rigid outer shell. An inlet pipe and an outlet pipe are respectively provided through the top and bottom of the rigid outer shell and the water-storing inner shell. Three first connecting pipes are arranged in a ring array on the outside of the rigid outer shell, and three second connecting pipes are arranged in a ring array on the outside of the water-storing inner shell. The three second connecting pipes are inserted into the three first connecting pipes one by one. A cover plate is threaded to the end of the first connecting pipe away from the rigid outer shell. An annular groove is formed on the inner side of the end of the first connecting pipe. A ball is movably disposed inside the annular groove. A channel is provided inside the ball, and a rigid pipe and a flexible pipe are integrally connected to both ends of the channel. The end of the flexible pipe away from the ball extends from the second connecting pipe to the inner side of the water-storing inner shell. An anti-detachment ring is provided at the connection between the end of the flexible pipe and the inner wall of the water-storing inner shell. A retaining ring is slidably fitted inside the annular groove. A spring is provided between the retaining ring and the end of the second connecting pipe, and the spring is sleeved on the outer wall of the flexible pipe.

[0008] Preferably, a one-way valve is provided inside the rigid tube, a sealing ring is provided at the connection between the first connecting tube and the second connecting tube, a sealing ring is installed between the first connecting tube and the cover plate, and the inner side of the sealing ring is fitted to the outer wall of the ball.

[0009] Preferably, the supporting arch frame includes at least two layers of steel plates, with a multi-cavity steel frame welded between adjacent steel plates, and the cavity formed by the adjacent steel plates and the multi-cavity steel frame is filled with concrete.

[0010] Preferably, the outer surface of the bottommost steel plate is provided with a nano-waterproof coating, and the outer surface of the topmost steel plate is provided with a ceramic coating.

[0011] Preferably, the buffer energy-absorbing layer comprises foamed concrete, EPS, porous lightweight aggregate and waste tire particles, and the volume ratio of foamed concrete, EPS, porous lightweight aggregate and waste tire particles is set to foamed concrete: EPS: porous lightweight aggregate: waste tire particles = 50: 1: 3: 3.

[0012] Preferably, both the ecological wind erosion prevention layer and the microbial mineralization covering layer include microbial solidified soil, vegetation is planted on the ecological wind erosion prevention layer, and the roots of the vegetation extend into the microbial mineralization covering layer. A fiber net is also provided in the microbial mineralization covering layer.

[0013] Preferably, the monitoring well penetrates the microbial mineralization cover layer and the ecological wind erosion prevention layer, and extends to the top of the gradient honeycomb constraint layer. Pressure sensors and soil temperature and humidity sensors are installed in the monitoring well to sense the pressure values ​​and temperature and humidity information of the microbial mineralization cover layer and the ecological wind erosion prevention layer, and transmit the data to the monitoring station.

[0014] Preferably, the supply module includes a mixing tank and a pulse pump. The input end of the mixing tank is equipped with a microbial liquid storage tank, a nutrient solution storage tank, and a Ca source storage tank. The input end of the pulse pump is connected to the output end of the mixing tank, and the output end of the pulse pump is connected to the input end of the primary distribution network.

[0015] The present invention also provides a construction method for a hangar structure with self-healing function, comprising the following steps: S1. Pile foundation construction: Piles are driven into the compacted ground to construct multiple sets of corresponding pile foundations. S2. Installation of support arch: Multiple sets of prefabricated support arches are erected between the corresponding two sets of pile foundations and spliced ​​to form a combined arch. Nano waterproof coating and ceramic coating are respectively installed on the outer and inner walls of the combined arch to form a waterproof structure. S3. Construction of buffer energy absorption layer: Set up formwork on the outside of the top of the supporting arch frame, mix foam concrete, EPS, porous lightweight aggregate and waste tire particles in a volume ratio of 50:1:3:3, add water and pour into the mold cavity of the buffer energy absorption layer, and wait for it to solidify to form the buffer energy absorption layer. S4. Gradient honeycomb constraint layer construction: Use regular hexagonal hollow bricks to splice multiple sets of gradient support units, stack multiple gradient support units in a honeycomb pattern on the top of the buffer energy absorption layer, and place flexible damping connectors between the buffer energy absorption layer and the gradient support units during splicing. S5. Pre-installation of microfluidic circulation mineralization operation and maintenance system: The three-level capillary network is laid in the gaps of multiple gradient support unit stacked structures, and the primary distribution network and secondary distribution network are further installed upward through the bracket; S6. Zoned filling and cover soil: Fill the area of ​​multiple gradient support units with filling soil by formwork filling method. Then, continue to build the main structure of microbial mineralized cover soil layer and ecological wind erosion prevention layer on top by microbial solidified soil and fiber net. The primary distribution network and secondary distribution network are buried in the microbial solidified soil covering area. S7. Planting and maintenance of vegetation: Transplant vegetation to the top of the ecological windbreak layer. The vegetation forms an ecological protection structure through the extension of its root system. During maintenance, microbial mineralization nutrient solution is introduced into the gradient honeycomb constraint layer, microbial mineralization cover layer and ecological windbreak layer through the micro-flow circulation mineralization operation and maintenance system to form microbial solidified soil.

[0016] Compared with the prior art, the present invention has the following advantages: 1. By optimizing the protection method of the top structure of the arch frame, compared with the traditional soil covering method, a lightweight honeycomb structure is used as the soil skeleton and microbial mineralization is used as the soil cementation method to form a self-stabilizing, wind erosion resistant, explosion resistant, and lightweight soil covering protection layer. The gradient honeycomb constraint layer can "lock" the soil and restrict soil flow. Even if the local structure of the gradient honeycomb constraint layer is damaged, the remaining gradient support units still have a restraining effect. The bearing capacity and overall structural stability are significantly improved, realizing the long-term stability, wind erosion resistance, explosion resistance and anti-voidage of the soil covering layer. It can also continuously carry out intelligent microbial repair of concrete cracks in the soil covering structure and steel-concrete composite main arch during service, thus forming a biomimetic protection system that integrates the functions of "structural bearing - impact energy dissipation - biological reinforcement - intelligent sensing - autonomous repair - long-term operation and maintenance".

[0017] 2. By deploying a microfluidic circulation mineralization operation and maintenance system within the protective structure at the top of the arch frame, the primary distribution network, secondary distribution network, and tertiary capillary network are interconnected and continuously extend into tiny flow channels, forming a spatial circulation system similar to "soil capillaries." When repair is needed, microbial mineralization nutrient solution is delivered into the soil through this transport channel to solidify the soil and repair cracks. The pipeline structure has a certain degree of activity compatibility, and can adaptively buffer when the structure deforms, avoiding direct tearing damage, extending the service life of the device, and ensuring the normal operation of the self-repair and bioremediation functions of the protective structure. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the hangar structure provided by the present invention.

[0019] Figure 2 The gradient cellular constraint layer provided in the embodiment of the present invention has a structural schematic diagram.

[0020] Figure 3 This is a three-dimensional view of a partial stacking structure of the gradient support unit in this invention.

[0021] Figure 4 This is a schematic diagram of the microfluidic circulating mineralization operation and maintenance system in this invention.

[0022] Figure 5 This is a partial structural diagram of the three-stage capillary network and flexible ball joint in this invention.

[0023] Figure 6 This is a partial cross-sectional view of the flexible ball joint provided by the present invention.

[0024] Figure 7 This is a schematic diagram of the supporting arch frame structure provided in an embodiment of the present invention.

[0025] Figure 8 This is a schematic diagram of the connection structure between the buffer energy-absorbing layer and the gradient honeycomb constraint layer in this invention.

[0026] Marked in the image: Support arch frame-1; Steel plate-101; Multi-cavity steel frame-102; Pile foundation-2; Buffer energy absorption layer-3; Gradient honeycomb constraint layer-4; Gradient support unit-41; Regular hexagonal hollow brick-411; Gradient channel-412; Microbial mineralization cover layer-5; Ecological wind erosion protection layer-6; Flexible damping connector-7; Monitoring well-8; Monitoring station-9; Supply module-10; Mixing box-1001; Pulse pump-1002; Microbial inoculum storage tank-1003; Nutrient solution storage tank-1004; Ca source storage tank-1 005; Primary distribution network - 11; Secondary distribution network - 12; Tertiary capillary network - 13; Flexible ball joint - 14; Rigid outer shell - 141; Inner water tank shell - 142; Inlet pipe - 143; Outlet pipe - 144; First connecting pipe - 145; Second connecting pipe - 146; Cover plate - 147; Ball bearing - 148; Rigid pipe - 149; Flexible hose - 1410; Anti-detachment ring - 1411; Clamping ring - 1412; Spring - 1413; One-way valve - 1414; Sealing ring - 1415; Vegetation - 15. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can refer to a detachable connection: it can be a mechanical connection; it can also be an indirect connection through an intermediate medium, or it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0030] like Figure 1-8 The hangar structure shown includes a self-healing function, including a support arch 1. The two ends of the support arch 1 are fixed to the hangar runway through pile foundations 2. The top of the support arch 1 is distributed from bottom to top as follows: a buffer energy absorption layer 3, a gradient honeycomb constraint layer 4, a microbial mineralized soil covering layer 5, and an ecological wind erosion prevention layer 6. A flexible damping connector 7 is provided between the buffer energy absorption layer 3 and the gradient honeycomb constraint layer 4. The gradient honeycomb constraint layer 4 includes several uniformly distributed gradient support units 41. Each gradient support unit 41 includes multiple regular hexagonal hollow bricks 411, which can be made of aluminum alloy honeycomb, FRP honeycomb, 3D printed polymer honeycomb, or expandable honeycomb. The size of the multiple regular hexagonal hollow bricks 411 that make up the same gradient support unit 41 decreases from top to bottom. The inner side of the regular hexagonal hollow bricks 411 is penetrated by gradient channels 412, and multiple regular hexagonal hollow bricks 411 are nested and combined in sequence through the gradient channels 412. The gap between each two adjacent gradient support units 41 is filled with soil. Microorganisms promote mineralization, forming CaCO3 mineralization bridges within the honeycomb structure to cement soil particles, creating a composite structure of "soil particles + biominerals." Using the lightweight honeycomb structure as the soil skeleton and microbial mineralization as the soil cementation method, a self-stabilizing, wind-erosion-resistant, blast-resistant, and lightweight overburden protective layer is formed. The gradient honeycomb constraint layer 4 can "lock" in the soil, restricting soil flow. Even after local damage to the gradient honeycomb constraint layer 4, the remaining gradient support units 41 still provide constraint, significantly improving bearing capacity; it can also absorb explosive energy in the event of a hazard.

[0031] The hangar structure also includes a distributed monitoring system and a microfluidic circulation mineralization operation and maintenance system. The distributed monitoring system includes monitoring wells 8 and monitoring stations 9. The microfluidic circulation mineralization operation and maintenance system includes a supply module 10, a primary distribution network 11, a secondary distribution network 12, and a tertiary capillary network 13. The primary distribution network 11 is evenly distributed inside the ecological wind erosion protection layer 6, and the secondary distribution network 12 is evenly distributed inside the microbial mineralization cover layer 5. Nozzles are installed on the surfaces of the primary and secondary distribution networks 11 and 12. The primary capillary network 13 is uniformly distributed within the gradient honeycomb constraint layer 4. The output end of the primary distribution network 11 is connected to the input end of the secondary distribution network 12, and the output end of the secondary distribution network 12 is connected to the input end of the tertiary capillary network 13. The tertiary capillary network 13 is buried in the fill soil. The microbial mineralization nutrient solution is introduced into the gradient honeycomb constraint layer 4, the microbial mineralization cover layer 5, and the ecological wind erosion prevention layer 6 through a microfluidic circulation mineralization operation and maintenance system. The most stable volume ratio of the microbial mineralization nutrient solution in engineering is as follows: Microbial solution: nutrient solution = 1:1-3. Among common combinations: microbial solution: nutrient solution = 1:1 results in rapid sedimentation and high reinforcement efficiency; microbial solution: nutrient solution = 1:2 offers good permeability and uniformity; microbial solution: nutrient solution = 1:3 addresses low-permeability soils and avoids clogging.

[0032] Typical nutrient solution composition includes urea: 0.5-1.0 mol / L; CaCl2: 0.25-0.75 mol / L; and a slowing agent (NH4Cl / NaHCO2): optional.

[0033] A flexible ball joint 14 is provided at the pipe network node of the tertiary capillary network 13. The flexible ball joint 14 is provided with multiple flexible output ports, and the flexible output ports are provided in correspondence with the fitting joints of two adjacent regular hexagonal hollow bricks 411.

[0034] This structure not only achieves long-term stability, wind erosion resistance, blast resistance, and anti-voidage of the overburden layer, but also continuously performs intelligent microbial repair on cracks in the overburden structure during service, thus forming a biomimetic protection system that integrates functions such as "structural load-bearing capacity, impact energy dissipation, biological reinforcement, intelligent sensing, autonomous repair, and long-term operation and maintenance." Unlike traditional one-time construction overburden hangars, this structure deeply couples biomimetic honeycomb constraint structure, microfluidic circulating mineralization network, steel-concrete composite multi-cavity arch shell, self-healing concrete technology, and digital health monitoring system to construct an intelligent protective hangar with "self-sensing, self-diagnosis, self-repair, and self-maintaining" capabilities.

[0035] Furthermore, in the above-mentioned scheme, the flexible ball joint 14 includes a rigid outer shell 141 and a water-storing inner shell 142. The water-storing inner shell 142 is coaxially disposed inside the rigid outer shell 141. An inlet pipe 143 and an outlet pipe 144 are respectively provided through the top and bottom of the rigid outer shell 141 and the water-storing inner shell 142. Three first connecting pipes 145 are arranged in a ring array outside the rigid outer shell 141, and three second connecting pipes 146 are arranged in a ring array outside the water-storing inner shell 142. The three second connecting pipes 146 are inserted into the three first connecting pipes 145 one by one. A cover plate 147 is threaded to the end of the first connecting pipe 145 away from the rigid outer shell 141. An annular groove is opened on the inner side of the end of the first connecting pipe 145, and a ball bearing 148 is movably disposed inside the annular groove. The system includes a channel with a rigid pipe 149 and a flexible pipe 1410 integrally connected to both ends. The end of the flexible pipe 1410 furthest from the ball bearing 148 extends from the second connecting pipe 146 to the inner side of the water storage inner shell 142. An anti-detachment ring 1411 is provided at the connection point between the end of the flexible pipe 1410 and the inner wall of the water storage inner shell 142. A retaining ring 1412 is slidably fitted inside the annular groove. A spring 1413 is located between the retaining ring 1412 and the end of the second connecting pipe 146, and the spring 1413 is sleeved on the outer wall of the flexible pipe 1410. Together with the retaining ring 1412, the outer wall of the ball bearing 148 is always pressed against the inner wall of the cover plate 147. When the rigid pipe 149 is subjected to external pressure or soil deformation, the ball bearing 148 will adaptively rotate, thus ensuring the safety of the rigid pipe 149 and preventing damage to the overflow channel. The flexible pipe 1410 is tightly connected to the water storage inner shell 142 via the anti-detachment ring 1411. Both components are not easily detached, further ensuring that the biomineralized nutrient solution entering the inner shell 142 can enter the hose 1410 and flow out through the overflow channel. The aforementioned movable structure can also be used to adjust the output angle. When the three-stage capillary network 13 and the flexible ball joint 14 are laid out, the orientation of the rigid pipe 149 can be adjusted in advance to limit the initial discharge orientation of the overflow channel, thereby better achieving the protective effect of bioremediation.

[0036] Multiple flexible ball joints 14 are connected to the tertiary capillary network 13. After the supporting structure collapses, the tertiary capillary network 13 can follow the soil and slightly change its direction after geological displacement. During this process, the output port of the flexible ball joint 14 will not be damaged, thus ensuring the normal liquid supply and repair work afterwards.

[0037] Furthermore, in the above scheme, a one-way valve 1414 is installed inside the rigid tube 149, a sealing ring is installed at the connection between the first connecting tube 145 and the second connecting tube 146, and a sealing ring 1415 is installed between the first connecting tube 145 and the cover plate 147, with the inner side of the sealing ring 1415 fitting snugly against the outer wall of the ball bearing 148. This ensures the airtightness of the flexible ball joint 14 structure, prevents the output port from being blocked, and improves its durability.

[0038] Furthermore, in the above scheme, the supporting arch frame 1 adopts a steel-concrete multi-cavity composite arch structure, including at least two layers of steel plates 101. A multi-cavity steel frame 102 is welded between adjacent steel plates 101, and the cavity formed by the adjacent steel plates 101 and the multi-cavity steel frame 102 is filled with concrete. The entire structure adopts a double-curvature continuous arch shell system, with a preferred span of 30-120m, a rise-to-span ratio of 1 / 3-1 / 8, and an overall thickness of 0.8-3.5m. The supporting arch frame 1 has strong load-bearing capacity and advantages in resistance to penetration and collapse.

[0039] Furthermore, in the above scheme, the outer surface of the bottom steel plate 101 is provided with a nano waterproof coating, and the outer surface of the top steel plate 101 is provided with a ceramic coating.

[0040] Furthermore, in the above scheme, the buffer energy-absorbing layer 3 comprises foamed concrete, EPS, porous lightweight aggregate, and waste tire pellets, with the volume ratio of foamed concrete:EPS:porous lightweight aggregate:waste tire pellets set to 50:1:3:3. The material combination of the buffer energy-absorbing layer 3 can reduce explosion reflection.

[0041] Furthermore, in the above scheme, both the ecological wind erosion barrier layer 6 and the microbial mineralization covering layer 5 include microbially stabilized soil. Vegetation 15 is planted on the ecological wind erosion barrier layer 6, and the roots of the vegetation 15 extend into the microbial mineralization covering layer 5. A fiber mesh is also installed within the microbial mineralization covering layer 5. The ecological wind erosion barrier layer 6 and the microbial mineralization covering layer 5 work together to reinforce the soil layer. After microbial cementation, a stable surface layer is formed, providing wind and erosion protection, camouflage, and infrared signature reduction.

[0042] Furthermore, in the above scheme, the monitoring well 8 penetrates the microbial mineralized cover layer 5 and the ecological wind erosion prevention layer 6, and extends to the top of the gradient honeycomb constraint layer 4. Pressure sensors and soil temperature and humidity sensors are installed in the monitoring well 8 to sense the pressure values ​​and temperature and humidity information of the microbial mineralized cover layer 5 and the ecological wind erosion prevention layer 6, and transmit the data to the monitoring station 9.

[0043] Furthermore, in the above scheme, the supply module 10 includes a mixing tank 1001 and a pulse pump 1002. The input end of the mixing tank 1001 is equipped with a microbial liquid storage tank 1003, a nutrient solution storage tank 1004 and a Ca source storage tank 1005. The input end of the pulse pump 1002 is connected to the output end of the mixing tank 1001, and the output end of the pulse pump 1002 is connected to the input end of the primary distribution network 11.

[0044] The present invention also provides a construction method for a hangar structure with self-healing function, comprising the following steps: S1, Pile Foundation 2 Construction: Piles are driven into the compacted ground to construct multiple sets of corresponding pile foundations 2.

[0045] S2. Installation of support arch 1: Multiple prefabricated support arches 1 are erected between the corresponding two sets of pile foundations 2 and spliced ​​to form a combined arch. Nano waterproof coating and ceramic coating are respectively installed on the outer and inner walls of the combined arch to form a waterproof structure.

[0046] In this embodiment, the outer steel plate 101 of the supporting arch frame 1 has a thickness of 25-120mm and is made of Q890, Q960 or explosion-resistant armor steel. Its surface is further coated with a high-temperature resistant ceramic layer and an anti-corrosion layer. The internal multi-cavity steel frame 102 adopts a crisscross spatial grid structure to form a large number of closed energy-dissipating cavities with a cavity size of 150-1500mm. The cavity is filled with aluminum foam, metal honeycomb, foam concrete or high-damping polymer material, thus forming a multi-level energy-dissipating system of "steel plate-cavity-energy-dissipating filling layer". The multi-cavity steel frame 102 adopts a biomimetic bamboo-joint segmented rib, corrugated web rib or fish belly variable cross-section rib structure to improve stability under explosive load and delay local buckling failure.

[0047] Furthermore, the main arch of the supporting arch frame 1 is filled with UHPC, ECC or steel fiber reinforced concrete, with a compressive strength preferably of 120-200MPa, and steel fibers, basalt fibers and nano-silica materials with a volume fraction of 1%-4% are incorporated to improve impact toughness and crack control.

[0048] The outer steel plate 101 is connected to the inner concrete by shear studs, perforated steel plate connectors or dovetail mechanical interlocking grooves.

[0049] S3. Construction of Buffer Energy Absorbing Layer 3: Formwork is erected on the outer side of the top of the supporting arch 1. Foamed concrete, EPS, porous lightweight aggregate, and waste tire particles are uniformly mixed in a volume ratio of 50:1:3:3. Water is added, and the mixture is poured into the mold cavity of buffer energy absorbing layer 3. After curing, buffer energy absorbing layer 3 is formed. In this embodiment, the thickness of buffer energy absorbing layer 3 is 0.3-2.0m, its porosity is 25%-70%, and its density is 300-1500kg / m³. 3 The buffer energy absorption layer 3 is equipped with a periodic corrugated sliding interface, a compressible energy dissipation chamber and a friction energy dissipation unit. Under the action of explosive load, it can generate 10-80mm controllable sliding, thereby dissipating the shock wave energy.

[0050] S4. Construction of gradient honeycomb constraint layer 4: Use regular hexagonal hollow bricks 411 to splice multiple sets of gradient support units 41, stack multiple gradient support units 41 in a honeycomb pattern on the top of buffer energy absorption layer 3, and place flexible damping connectors 7 between buffer energy absorption layer 3 and gradient support units 41 during splicing; so that gradient honeycomb constraint layer 4 can both work together as a whole and undergo local deformation.

[0051] Specifically, the gradient support unit 41 is laid continuously along the top and sides of the hangar and extends to the side walls to form a covering structure, thereby avoiding the collapse of traditional soil-covered slopes; the total thickness of the gradient support unit 41 is 0.5-4.0m, taking into account wind erosion resistance, soil constraint capacity and impact energy dissipation capacity; the surface of the regular hexagonal hollow brick 411 is provided with fish scale-like rough texture, spiral guide groove and through-hole permeation hole with a hole diameter of 2-20mm, which is used to form a transcellular mineralization bridge; adjacent regular hexagonal hollow bricks 411 can be connected by a mortise and tenon joint structure and fixed with high ductility polymer buckles, thereby forming an energy dissipation mechanism of "local crushing - overall synergy".

[0052] S5. Pre-installation of microfluidic circulation mineralization operation and maintenance system: The three-level capillary network 13 is laid in the gaps of the stacked structure of multiple gradient support units 41, and the primary distribution network 11 and secondary distribution network 12 are further installed upward through the bracket.

[0053] In the embodiments provided by the present invention, the main pipe diameter of the primary distribution network 11 is 50-150mm, the main pipe diameter of the secondary distribution network 12 is 10-40mm, and regional control nodes are set at every 0.5-2.0m; the main pipe diameter of the tertiary capillary network 13 is 0.5-3mm, and it is distributed along the inside of the honeycomb cell wall and the node area, thereby forming a spatial circulation system similar to "soil capillaries"; microfluidic channels and replaceable microtubes are pre-embedded inside the honeycomb cell wall to form a "structure-fluid integrated honeycomb skeleton".

[0054] S6. Zoned filling and covering soil: Fill the area of ​​multiple gradient support units 41 with filling soil by formwork filling method. Then, continue to pile up the main structure of microbial mineralized covering soil layer 5 and ecological wind erosion prevention layer 6 on top of it by microbial solidified soil and fiber net. The primary distribution network 11 and secondary distribution network 12 are buried in the area covered by microbial solidified soil.

[0055] S7. Planting and Maintenance of Vegetation 15: Vegetation 15 is transplanted to the top of the ecological windbreak layer 6. The vegetation 15 forms an ecological protective structure through its root system. During maintenance, a microbial mineralization nutrient solution is introduced into the gradient honeycomb constraint layer 4, the microbial mineralization cover layer 5, and the ecological windbreak layer 6 via a micro-flow circulation mineralization maintenance system, forming microbially stabilized soil. When cracks appear, the microbial mineralization nutrient solution is injected through the central controller, allowing the microorganisms to remineralize and fill the cracks. Automatic maintenance can also be achieved through periodic injections. For example, during service, the system automatically performs low-dose cyclic mineralization maintenance every 1-6 months to maintain the long-term activity and strength of the soil. This microbial-plant synergistic slope protection prevents soil erosion and landslides.

[0056] Furthermore, valves in corresponding areas can be opened directionally to precisely deliver bacterial solution and Ca source only to the damaged area, achieving localized and targeted repair rather than traditional overall grouting. The bacterial solution diffuses into the honeycomb cells of the damaged area along the primary distribution network 11, secondary distribution network 12, and tertiary capillary network 13, and overflows to the repair site through nozzles and flexible ball joints 14, forming CaCO3 mineralization bridges between soil particles. At the same time, mineralization crystals are directionally deposited along the rough texture of the honeycomb cell wall, forming a "mineralization key" structure, thereby creating a composite interface between the honeycomb skeleton and the soil similar to reinforced concrete. After mineralization, the compressive strength of the covering soil can be increased to 3-20 MPa, the shear strength can be increased by 100%-500%, and a biological hard shell with a thickness of 10-100 mm can be formed on the surface, increasing its critical wind speed for wind erosion resistance to 30-45 m / s.

[0057] To complement this, the system is further equipped with a distributed intelligent monitoring system, including fiber Bragg gratings, piezoelectric sensors, ultrasonic sensors, acoustic emission sensors, resistivity monitoring networks, humidity sensors, and miniature barometric pressure sensors. This system can monitor crack expansion, void formation, mineralization level, wind erosion degradation, and concrete damage in real time. When the system detects that the crack width exceeds a set threshold, local settlement exceeds limits, or mineralization density decreases, it automatically initiates the "soil remineralization repair" or "concrete crack repair" program for the corresponding area. This enables continuous reinforcement, autonomous repair, and intelligent operation and maintenance of the entire hangar structure throughout its entire life cycle.

[0058] The above are merely specific embodiments of the present invention, but the structural features of the present invention are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present invention are covered by the patent scope of the present invention.

Claims

1. A hangar structure with self-healing function, comprising a supporting arch frame (1), the two ends of which are fixed to the hangar runway via pile foundations (2), characterized in that: The top of the supporting arch (1) is provided with a buffer energy absorption layer (3), a gradient honeycomb constraint layer (4), a microbial mineralized soil covering layer (5) and an ecological wind erosion prevention layer (6) from bottom to top. A flexible damping connector (7) is provided between the buffer energy absorption layer (3) and the gradient honeycomb constraint layer (4). The gradient honeycomb constraint layer (4) includes several uniformly distributed gradient support units (41). Each gradient support unit (41) includes multiple regular hexagonal hollow bricks (411). The size of the multiple regular hexagonal hollow bricks (411) that make up the same gradient support unit (41) decreases from top to bottom. The inner side of the regular hexagonal hollow bricks (411) is penetrated by gradient channels (412). Multiple regular hexagonal hollow bricks (411) are nested and combined in sequence through gradient channels (412). Filling soil is provided in the gap between each two adjacent gradient support units (41). The hangar structure also includes a distributed monitoring system and a microfluidic circulation mineralization operation and maintenance system. The distributed monitoring system includes monitoring wells (8) and monitoring stations (9). The microfluidic circulation mineralization operation and maintenance system includes a supply module (10), a primary distribution network (11), a secondary distribution network (12), and a tertiary capillary network (13). The primary distribution network (11) is evenly distributed inside the ecological wind erosion protection layer (6), and the secondary distribution network (12) is evenly distributed inside the microbial mineralization cover layer (5). The surface of the net (12) is equipped with nozzles. The three-level capillary network (13) is evenly distributed in the gradient honeycomb constraint layer (4). The output end of the primary distribution network (11) is connected to the input end of the secondary distribution network (12). The output end of the secondary distribution network (12) is connected to the input end of the tertiary capillary network (13). The tertiary capillary network (13) is buried in the filling soil. The microbial mineralization nutrient solution is input into the gradient honeycomb constraint layer (4), the microbial mineralization cover layer (5), and the ecological wind erosion prevention layer (6) through the micro-flow circulation mineralization operation and maintenance system. A flexible ball joint (14) is provided at the pipe network node of the three-level capillary network (13). The flexible ball joint (14) is provided with multiple flexible output ports, and the flexible output ports are provided in correspondence with the fitting joints of two adjacent regular hexagonal hollow bricks (411).

2. The hangar structure with self-repair function according to claim 1, characterized in that: The flexible ball joint (14) includes a rigid outer shell (141) and a water-storing inner shell (142). The water-storing inner shell (142) is coaxially disposed inside the rigid outer shell (141). An inlet pipe (143) and an outlet pipe (144) are respectively provided through the top and bottom of the rigid outer shell (141) and the water-storing inner shell (142). Three first connecting pipes (145) are arranged in a ring array outside the rigid outer shell (141), and three second connecting pipes (146) are arranged in a ring array outside the water-storing inner shell (142). The three second connecting pipes (146) are inserted into the three first connecting pipes (145) one by one. A cover plate (147) is threaded to the end of the first connecting pipe (145) away from the rigid outer shell (141). A connecting pipe (145) has an annular groove on its inner side. A ball (148) is movably arranged inside the annular groove. A channel is provided inside the ball (148), and a rigid pipe (149) and a flexible pipe (1410) are integrally connected to both ends of the channel. The end of the flexible pipe (1410) away from the ball (148) extends from the second connecting pipe (146) to the inner side of the water storage shell (142). An anti-detachment ring (1411) is provided at the connection between the end of the flexible pipe (1410) and the inner wall of the water storage shell (142). A clamping ring (1412) is slidably fitted inside the annular groove. A spring (1413) is provided between the clamping ring (1412) and the end of the second connecting pipe (146), and the spring (1413) is sleeved on the outer wall of the flexible pipe (1410).

3. A hangar structure with self-healing function according to claim 2, characterized in that: The rigid tube (149) is equipped with a one-way valve (1414), and a sealing ring is provided at the connection between the first connecting tube (145) and the second connecting tube (146). A sealing ring (1415) is installed between the first connecting tube (145) and the cover plate (147), and the inner side of the sealing ring (1415) is fitted against the outer wall of the ball (148).

4. A hangar structure with self-repair function according to claim 1, characterized in that: The supporting arch frame (1) includes at least two layers of steel plates (101), with a multi-cavity steel frame (102) welded between adjacent steel plates (101), and the cavity formed by the adjacent steel plates (101) and the multi-cavity steel frame (102) is filled with concrete.

5. A hangar structure with self-healing function according to claim 4, characterized in that: The outer surface of the bottom steel plate (101) is provided with a nano waterproof coating, and the outer surface of the top steel plate (101) is provided with a ceramic coating.

6. A hangar structure with self-healing function according to claim 1, characterized in that: The buffer energy-absorbing layer (3) includes foamed concrete, EPS, porous lightweight aggregate and waste tire particles. The volume ratio of foamed concrete, EPS, porous lightweight aggregate and waste tire particles is set as foamed concrete: EPS: porous lightweight aggregate: waste tire particles = 50: 1: 3:

3.

7. A hangar structure with self-healing function according to claim 1, characterized in that: The ecological wind erosion prevention layer (6) and the microbial mineralization covering layer (5) both include microbial solidified soil. Vegetation (15) is planted on the ecological wind erosion prevention layer (6), and the roots of the vegetation (15) extend into the microbial mineralization covering layer (5). A fiber net is also provided in the microbial mineralization covering layer (5).

8. A hangar structure with self-repair function according to claim 1, characterized in that: The monitoring well (8) penetrates the microbial mineralized cover layer (5) and the ecological wind erosion prevention layer (6) and extends to the top of the gradient honeycomb constraint layer (4). The monitoring well (8) is equipped with pressure sensors and soil temperature and humidity sensors to sense the pressure values ​​and temperature and humidity information of the microbial mineralized cover layer (5) and the ecological wind erosion prevention layer (6) and transmit the data to the monitoring station (9).

9. A hangar structure with self-healing function according to claim 1, characterized in that: The supply module (10) includes a mixing tank (1001) and a pulse pump (1002). The input end of the mixing tank (1001) is equipped with a microbial liquid storage tank (1003), a nutrient solution storage tank (1004) and a Ca source storage tank (1005). The input end of the pulse pump (1002) is connected to the output end of the mixing tank (1001), and the output end of the pulse pump (1002) is connected to the input end of the primary distribution network (11).

10. A construction method for a hangar structure with self-healing function as described in any one of claims 1-9, characterized in that: Includes the following steps: S1, Pile Foundation (2) Construction: Drive piles on the compacted foundation to construct multiple sets of corresponding pile foundations (2). S2, Installation of support arch frame (1): Multiple sets of prefabricated support arch frames (1) are erected between the corresponding two sets of pile foundations (2) and spliced ​​to form a combined arch. Nano waterproof coating and ceramic coating are respectively installed on the outer and inner walls of the combined arch to form a waterproof structure. S3, Buffer Energy Absorption Layer (3) Construction: Set up formwork on the outside of the top of the supporting arch frame (1), mix foam concrete, EPS, porous lightweight aggregate and waste tire particles in a volume ratio of 50:1:3:3, add water and pour into the mold cavity of the buffer energy absorption layer (3), and wait for it to solidify to form the buffer energy absorption layer (3). S4, Gradient honeycomb constraint layer (4) construction: Use regular hexagonal hollow bricks (411) to splice into multiple sets of gradient support units (41), stack multiple gradient support units (41) in a honeycomb shape on the top of the buffer energy absorption layer (3), and place flexible damping connectors (7) between the buffer energy absorption layer (3) and the gradient support units (41) during splicing. S5. Pre-installation of microfluidic circulation mineralization operation and maintenance system: The three-level capillary network (13) is laid in the gap of the stacked structure of multiple gradient support units (41), and the primary distribution network (11) and secondary distribution network (12) are further installed upward through the bracket. S6. Zoned filling and covering soil: Fill the filling soil in the stacked area of ​​multiple gradient support units (41) by formwork filling method. Then, continue to stack the main structure of microbial mineralized covering soil layer (5) and ecological wind erosion prevention layer (6) on top by microbial solidified soil and fiber net. The primary distribution network (11) and secondary distribution network (12) are buried in the microbial solidified soil covering area. S7. Planting and maintenance of vegetation (15): The vegetation (15) is transplanted to the top of the ecological windbreak layer (6). The vegetation (15) forms an ecological protection structure through the extension of the root system. During maintenance, the microbial mineralization nutrient solution is introduced into the gradient honeycomb constraint layer (4), the microbial mineralization cover layer (5) and the ecological windbreak layer (6) through the micro-flow circulation mineralization operation and maintenance system to form microbial solidified soil.

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