An emergency pedestrian bridge of voided construction and method of use thereof

Abstract

The application discloses a kind of empty construction emergency pedestrian bridge and its using method, belong to emergency traffic special carrying equipment technical field;A kind of empty construction emergency pedestrian bridge, using rotor mechanism to modular bridge span module is transported hoisting, and after hoisting is completed, rotor mechanism is as the part of bridge span support, forms the suspension cable-stayed bridge structure system of rotor mechanism hoisting;Because air bag float unit also has sustained upward suspension force, cooperate rotor mechanism to provide sustained upward elastic support for bridge span girder, both are backup for each other, significantly optimize the stress and deformation state of bridge span girder, pull rod system and cross link beam, enhance the carrying capacity of bridge whole and get rid of ground transportation;It can be transported while adapting to complex terrain and constructing quickly, improve the carrying capacity and span of bridge, solve the current emergency pedestrian bridge span small, self heavy, difficult to adapt to complex terrain transportation and construction problem.

Description

Technical Field

[0001] This invention relates to an emergency pedestrian bridge constructed in an open space and its usage method, belonging to the technical field of emergency transportation special transport equipment. Background Technology

[0002] In complex and treacherous terrain such as high mountains and canyons, conventional bridges and roads are easily paralyzed in the event of natural disasters such as earthquakes and mudslides, turning disaster areas into "islands". This makes it extremely difficult to transfer people, advance teams, transport the wounded, replenish supplies, and deploy rescue forces. Emergency pedestrian bridges are mainly used to ensure the rapid passage of people after transportation infrastructure has been damaged by natural disasters.

[0003] Existing emergency pedestrian bridges generally rely on ground vehicles or manpower for transportation and mobility, and require a large number of personnel for on-site erection. This strong dependence on ground vehicles and manpower inevitably leads to time-consuming and dangerous detours through mountains or river crossings, making it difficult to achieve rapid and effective deployment in areas with complex terrain such as mountain valleys where vehicles cannot directly access them. Moreover, existing emergency pedestrian bridges are mainly made of traditional materials such as bamboo, wood, steel, and aluminum alloys, and are generally simple-supported beams or tensioned beams, resulting in heavy bridge structures and difficulty in achieving large spans, thus failing to meet the requirements for constructing emergency passages over large-span natural obstacles. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide an emergency pedestrian bridge constructed in an open space and its usage method. This invention can improve the load-bearing capacity and span of the bridge while adapting to transportation in complex terrain and carrying out rapid construction. It solves the problems of current emergency pedestrian bridges having small spans, heavy weights, and difficulty in adapting to transportation and construction in complex terrains.

[0005] To solve the above-mentioned technical problems, the present invention is implemented using the following technical solution: The present invention provides an emergency pedestrian bridge constructed in an open space, comprising: multiple interconnected bridge span modules; The bridge span module includes a main bridge span beam, a tie rod system, and a rotor mechanism; The main girder of the bridge span includes multiple spliced ​​main girder units and airbag buoy units corresponding to the multiple main girder units; The airbag float unit is provided with an inflation port and is connected to the main beam unit; The main beam unit is provided with a hanging point corresponding to the tie rod system, and the rotor mechanism is provided with a transverse connecting beam corresponding to the tie rod system; the tie rod system is connected to the main beam unit and the rotor mechanism respectively through the hanging points and the transverse connecting beam.

[0006] Optionally, the outer side of the airbag buoy unit is provided with multiple anchoring through holes, and stabilizing rigging is hooked onto the anchoring through holes, so that the airbag buoy unit is anchored to the ground by the stabilizing rigging.

[0007] Optionally, the main beam unit includes two rows of parallel main beam tubes, a cross tube fixed between the two rows of main beam tubes, and a plate surface laid on the two rows of main beam tubes and the cross tube. One end of the main beam tube is provided with a threaded toothed ring, and the other end is provided with an external threaded section; adjacent main beam units are provided with threaded connecting tubes that are compatible with the threaded toothed ring and the external threaded section, and adjacent main beam units are connected by threaded connecting tubes.

[0008] Optionally, a first through hole is provided on the outer side of the main beam tube to form a hanging point for connection with the tie rod system.

[0009] Optionally, the main beam tube is a multi-stage variable cross-section expansion structure or a single-stage constant cross-section structure; wherein, the cross-connecting tube is located between the main beam tubes of the same stage.

[0010] Optionally, the airbag buoy unit is provided with a groove that extends through both ends, and the main beam unit is disposed in the groove; An assembly mechanism is provided between the main beam unit and the airbag buoy unit; The assembly mechanism includes multiple second through holes located on the outside of the main beam tube, multiple third through holes located on the inside of the groove corresponding to the second through holes, and fixing pins; the second through holes and the third through holes are connected by fixing pins.

[0011] Optionally, an expanded connection port is provided between adjacent bridge modules; The enlarged connection port is equipped with a threaded locking tube that is compatible with the threaded toothed ring and the external thread section.

[0012] Optionally, the tie rod system includes multiple tie rods arranged in a double-row pattern; one end of each tie rod is hooked to a corresponding hanging point, and the other end converges at a cross connecting beam and is hinged to the cross connecting beam.

[0013] Optionally, the tie rod is a single-stage rod or a multi-stage telescopic rod; The multi-stage telescopic rod is driven by electricity or hydraulics.

[0014] Another aspect of the present invention provides a method for using the above-described vacant emergency pedestrian bridge, comprising: Select a predetermined number of bridge span main beams, tie rod systems, and rotor mechanisms; the predetermined number must meet the load and obstacle span requirements. Inflate the airbag buoy unit to the working pressure, and then connect the main beam unit, airbag buoy unit, and tie rod system in sequence. The tie rod system is connected to the cross connecting beam to form a bridge span module for the rotor mechanism suspension; The assembled bridge span modules are hoisted to the target erection position using a rotor mechanism. Once the preset number of bridge modules are in place, the bridge modules are connected longitudinally by expanding the connection ports; The two ends of the completed bridge span module are placed on the support points on both banks. The bridge deck alignment is finely adjusted by controlling the overall length of the tie rod system. Then, the stabilizing cable is led out from the airbag floating unit and anchored to the ground. Maintain the levitation force of the rotor mechanism, keep the bridge deck balanced, and allow pedestrian access to the bridge deck; After personnel have passed through, the stabilizing rigging is released, the connected bridge modules are disassembled, and then lifted away and transported back using a rotor mechanism.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: 1. This invention employs a rotor mechanism to transport and hoist modular bridge span modules. After hoisting, the rotor mechanism is integrated as part of the bridge span support, forming a suspended cable-stayed bridge structure system with rotor mechanism hoisting. Since the airbag buoy unit also has a continuous upward levitation force, it works in conjunction with the rotor mechanism to provide continuous upward elastic support for the main beam of the bridge span. The two serve as backups for each other, significantly optimizing the stress and deformation state of the main beam, tie rod system, and cross connecting beams, enhancing the overall load-bearing capacity of the bridge, and eliminating the need for ground transportation. It can adapt to transportation in complex terrain and be constructed quickly, while improving the load-bearing capacity and span of the bridge, solving the problems of current emergency pedestrian bridges having small spans, heavy weight, and difficulty in adapting to transportation and construction in complex terrain.

[0016] 2. In this invention, the tie rod system can be length adjusted. Together with the hooked main beam of the bridge span and the hinged cross beam, the main beam of the bridge span, the tie rod system and the cross beam can form a self-balancing cable-stayed bridge span structure system. This breaks through the limitations of traditional pedestrian bridge structure systems such as simply supported beams or tensioned beams in terms of self-weight, load-bearing efficiency and spanning capacity, and improves the adaptability of the main beam of the bridge span to different loads and terrains.

[0017] 3. In this invention, the main beam unit also adopts a modular design. The assembly of the main beam units can be realized through threaded connecting pipes, and the assembly mechanism can realize the assembly of the main beam unit and the airbag floating body unit, which facilitates the assembly, disassembly and transportation of the bridge span module. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an emergency pedestrian bridge constructed in an open space, provided by an embodiment of the present invention. Figure 2 This is a structural schematic diagram of the main beam unit provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the main beam tube provided in an embodiment of the present invention; Figure 4 This is a structural schematic diagram of the main beam of the bridge span provided in an embodiment of the present invention; Figure 5 This is a side view structural diagram of an emergency pedestrian bridge constructed in an open space, provided by an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the threaded connecting pipe provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the groove structure provided in an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of the airbag buoyancy unit provided in an embodiment of the present invention; Figure 9 This is provided by the embodiments of the present invention. Figure 7 Enlarged view of point A in the middle; Figure 10 This is provided by the embodiments of the present invention. Figure 7 Enlarged view at point B in the middle; Figure 11 This is a schematic diagram of the structure of the second through hole provided in an embodiment of the present invention; Figure 12 This is a schematic diagram of the connection between adjacent bridge span modules provided in an embodiment of the present invention; Figure 13 This is provided by the embodiments of the present invention. Figure 11 Enlarged view at point C; Figure 14 This is a schematic diagram showing the connection between the tie rod system provided in this embodiment of the invention and the main beam and cross connecting beam of the bridge span; Figure 15 This is provided by the embodiments of the present invention. Figure 14 Enlarged view at point D; Figure 16 This is provided by the embodiments of the present invention. Figure 14 Enlarged view at point E in the middle; Figure 17 This is a schematic diagram illustrating the construction process of an emergency pedestrian bridge constructed in an open space, as provided in an embodiment of the present invention. Figure 18 This is a schematic diagram of the completed bridge structure of an emergency pedestrian bridge constructed in an open space, provided by an embodiment of the present invention.

[0019] In the diagram: 1. Bridge span module; 2. Bridge span main beam; 201. Main beam unit; 2011. Main beam tube; 2012. Cross connecting tube; 2013. Plate surface; 202. Airbag floating body unit; 3. Tie rod system; 301. Hanging tie rod; 4. Rotor mechanism; 5. Cross connecting beam; 6. Groove; 7. Inflation interface; 8. Anchoring through hole; 9. Stabilizing rigging; 10. Ground; 11. Threaded toothed ring; 12. External threaded section; 13. Threaded connecting tube; 14. First through hole; 15. Second through hole; 16. Third through hole; 17. Fixing pin; 18. Enlarged connection port; 19. Threaded locking tube. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention. Example 1

[0021] like Figure 1 and Figure 2 As shown, this embodiment provides an emergency pedestrian bridge constructed in an open space, including: multiple interconnected bridge span modules 1; wherein, the bridge span module 1 includes a main bridge beam 2, a tie rod system 3, and a rotor mechanism 4; the main bridge beam 2 includes multiple spliced ​​main beam units 201 and airbag floating body units 202 corresponding to the multiple main beam units 201; the main beam units 201 are provided with attachment points corresponding to the tie rod system 3, and the bottom of the rotor mechanism 4 is equipped with a transverse connecting beam 5 corresponding to the tie rod system 3; the tie rod system 3 is connected to the main beam units 201 and the rotor mechanism 4 respectively through the attachment points and the transverse connecting beam 5, and the airbag floating body units 202 are connected to the main beam units 201; Specifically: like Figure 1 and Figure 2 As shown, in this embodiment, the rotor mechanism 4 is a multi-rotor drone; The airbag buoy unit 202 is provided with a groove 6 that extends through both ends, and the main beam unit 201 is disposed in the groove 6; The airbag buoy unit 202 is provided with an inflation port 7, through which gas can be injected into the airbag buoy unit 202 to achieve controllable levitation force of the airbag buoy unit 202 on the main beam unit 201. Multiple anchoring holes 8 are provided on the outer side of the airbag buoy unit 202, and stabilizing rigging 9 is hooked onto the anchoring holes 8; like Figure 3 , Figure 4 , Figure 5 Figure 6 As shown, the main beam unit 201 includes parallel double-row main beam tubes 2011, cross-connecting tubes 2012, and plate surface 2013; Among them, the main beam pipe 2011 is a multi-stage variable cross-section expansion structure or a single-stage equal cross-section structure; taking the multi-stage variable cross-section expansion structure as an example, the horizontal connecting pipe 2012 is fixed between the double-row main beam pipes 2011 of the same level, and the plate surface 2013 is laid on the double-row main beam pipes 2011 and the horizontal connecting pipe 2012. The main beam tube 2011 has a threaded toothed ring 11 inside the front end and an external threaded section 12 at the rear end; a threaded connecting tube 13 adapted to the threaded toothed ring 11 and the external threaded section 12 is provided between two adjacent main beam units 201, and two adjacent main beam units 201 are connected through the threaded connecting tube 13, realizing the modular splicing of the main beam unit 201. The main beam tube 2011 has a first through hole 14 on the outside, forming a hanging point for connecting with the tie rod system 3.

[0022] like Figure 7 , Figure 8 , Figure 9 and Figure 10 and Figure 11 As shown, an assembly mechanism is provided between the main beam unit 201 and the airbag buoy unit 202; Specifically: The assembly mechanism includes multiple second through holes 15 located on the outside of the main beam tube 2011, multiple third through holes 16 located on the inside of the groove 6 corresponding to the second through holes 15, and a fixing pin 17; the second through holes 15 and the third through holes 16 are connected by the fixing pin 17. The main beam unit 201 can be assembled through the threaded connecting pipe 13, and the main beam unit 201 and the airbag floating body unit 202 can be assembled through the assembly mechanism, which facilitates the assembly, disassembly and transportation of the bridge span module 1.

[0023] like Figure 3 , Figure 12 , Figure 13 As shown, an extended connection port 18 is provided between two adjacent bridge modules 1; Specifically: The enlarged connection port 18 is provided with a threaded locking tube 19 that is compatible with the threaded toothed ring 11 and the external threaded section 12; Taking two bridge modules 1, one in front and one behind, as an example: In the front bridge span module 1, the external thread section 12 of the rear end of the main beam tube 2011 is threadedly connected to the front end of the threaded locking tube 19, and the threaded toothed ring 11 of the front end of the main beam tube 2011 in the rear bridge span module 1 is threadedly connected to the rear end of the threaded locking tube 19. Operators can select the required number of bridge modules 1 for modular assembly based on the obstacle area and traffic load requirements.

[0024] like Figure 1 , Figure 14 , Figure 15 and Figure 16 As shown, the tie rod system 3 includes multiple tie rods 301 arranged in double rows, and the tie rods 301 are single-stage rods or multi-stage telescopic rods; In this embodiment, the tie rod 301 is a multi-stage telescopic rod, driven by electric or hydraulic power; a single bridge span main beam 2 is provided with 3 double-row tie rods 301, the front and rear two double-row tie rods 301 are diagonal tie rods, and the middle double-row tie rod 301 is a vertical tie rod; The bottom end of the tie rod 301 is hook-shaped, which is adapted to and hooked to the first through hole 14. The top ends of the three tie rods 301 meet at the horizontal connecting beam 5 and are hinged to the horizontal connecting beam 5. The tie rod system 3 is length-adjustable. Together with the hooked main girder 2 and the hinged transverse connecting beam 5, the main girder 2, tie rod system 3 and transverse connecting beam 5 can form a self-balancing cable-stayed bridge span, which improves the adaptability of the main girder 2 to different loads and terrain.

[0025] Working principle The main girder 2, tie rod system 3, and transverse connecting beam 5, hoisted by the rotor mechanism 4, form a suspended cable-stayed bridge structure. This structure, consisting of the main girder 2, tie rod system 3, and transverse connecting beam 5, creates a self-balancing cable-stayed bridge span, overcoming the limitations of traditional pedestrian bridge structures such as simply supported beams or tensioned beams in terms of self-weight, load-bearing efficiency, and spanning capacity. The rotor mechanism 4 provides stable levitation force, which is transmitted to the main girder 2 through the transverse connecting beam 5 and tie rod system 3. This, combined with the airbag floating unit 202, provides continuous and controllable upward elastic support to the main girder 2. This optimizes the stress and deformation state of the main girder 2, tie rod system 3, and transverse connecting beam 5, enhancing the overall load-bearing capacity of the bridge and eliminating reliance on ground transportation and construction. Furthermore, the rotor mechanism 4 and the airbag floating unit 202 serve as backups for each other; even if one fails, the other can still provide critical support, greatly enhancing the overall safety and robustness of the bridge during traffic. Example 2

[0026] like Figure 1 , Figure 12 , Figure 17 Figure 18 As shown in the figure, this embodiment provides a method for using an emergency pedestrian bridge constructed in an open space, including: Step 1: Select a preset number of bridge span main beams 2, tie rod systems 3, and rotor mechanisms 4; wherein, the preset number meets the load and obstacle span requirements; in this embodiment, a number of bridge span main beams 2 that can be assembled into two bridge span modules 1, as well as the matching tie rod systems 3 and rotor mechanisms 4 are selected; Step 2: Inflate the airbag float unit 202 to the working pressure, and connect the main beam unit 201 to the airbag float unit 202 and the tie rod system 3 in sequence; Step 3: Connect the tie rod system 3 to the cross connecting beam 5 to assemble the bridge span module 1 suspended by the rotor mechanism 4; Step 4: Use the rotor mechanism 4 to smoothly lift the assembled bridge module 1 off the ground 10, and fly it over the obstacle area in the form of aerial hoisting, and safely transport it to the bridge position directly above the obstacle target ahead; Once the preset number of bridge span modules 1 are in place, the bridge span modules 1 are longitudinally connected by expanding the connection port 18; Step 5: Place the two ends of the completed bridge span module 1 at the support points on both banks, and fine-tune the bridge deck alignment to meet the requirements by controlling the overall length of the tie rod system 3. Then, lead out the stabilizing cable 9 from the airbag floating unit 202 and anchor the stabilizing cable 9 to the ground 10 to enhance the lateral wind resistance stability of the bridge. Step 6: Convert rotor mechanism 4 to fixed-point suspension mode, enter dynamic load adjustment state, and open personnel access; Step 7: After personnel have passed through, release the anchoring of the stabilizing sling 9, disassemble the connected bridge span module 1, and lift it away and transport it back via the rotor mechanism 4; the rotor mechanism 4 descends to the rear lifting point, quickly disconnects the connections between the components, and disassembles the system back into the initial modular units or independent components for inspection, maintenance, and storage, in preparation for the next task.

[0027] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0028] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0029] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An emergency pedestrian bridge constructed in an open space, characterized in that, include: Multiple interconnected bridge modules (1); The bridge span module (1) includes a bridge span main beam (2), a tie rod system (3), and a rotor mechanism (4). The main girder (2) of the bridge span includes multiple spliced ​​main girder units (201) and airbag floating body units (202) corresponding to the multiple main girder units (201). The airbag buoy unit (202) is provided with an inflation port (7), and the airbag buoy unit (202) is connected to the main beam unit (201); The main beam unit (201) is provided with a hanging point corresponding to the tie rod system (3), and the rotor mechanism (4) is provided with a transverse connecting beam (5) corresponding to the tie rod system (3); the tie rod system (3) is connected to the main beam unit (201) and the rotor mechanism (4) respectively through the hanging point and the transverse connecting beam (5).

2. The emergency pedestrian bridge constructed in an open space according to claim 1, characterized in that, The airbag buoy unit (202) has multiple anchoring through holes (8) on its outer side. The anchoring through holes (8) are hooked with stabilizing rigging (9). The airbag buoy unit (202) is anchored to the ground (10) by the stabilizing rigging (9).

3. The emergency pedestrian bridge constructed in an open space according to claim 1, characterized in that, The main beam unit (201) includes two rows of main beam pipes (2011) distributed in parallel, a cross pipe (2012) fixed between the two rows of main beam pipes (2011), and a plate (2013) laid on the two rows of main beam pipes (2011) and the cross pipe (2012). One end of the main beam tube (2011) is provided with a threaded toothed ring (11), and the other end is provided with an external threaded section (12); a threaded connecting tube (13) adapted to the threaded toothed ring (11) and the external threaded section (12) is provided between adjacent main beam units (201), and adjacent main beam units (201) are connected by the threaded connecting tube (13).

4. The emergency pedestrian bridge constructed in an open space according to claim 3, characterized in that, The main beam tube (2011) has a first through hole (14) on its outer side, forming a hanging point for connecting with the tie rod system (3).

5. The emergency pedestrian bridge constructed in an open space according to claim 3, characterized in that, The main beam tube (2011) is a multi-stage variable cross-section expansion structure or a single-stage equal cross-section structure; wherein, the cross connecting tube (2012) is located between the main beam tubes (2011) of the same level.

6. The emergency pedestrian bridge constructed in an open space according to claim 3, characterized in that, The airbag buoy unit (202) is provided with a groove (6) that extends through both ends, and the main beam unit (201) is located in the groove (6); An assembly mechanism is provided between the main beam unit (201) and the airbag buoy unit (202); The assembly mechanism includes multiple second through holes (15) located on the outside of the main beam tube (2011), multiple third through holes (16) located on the inside of the groove (6) corresponding to the second through holes (15), and a fixing pin (17); the second through holes (15) and the third through holes (16) are connected by the fixing pin (17).

7. The emergency pedestrian bridge constructed in an open space according to claim 3, characterized in that, An enlarged connection port (18) is provided between adjacent bridge modules (1). The enlarged connection port (18) is provided with a threaded locking tube (19) that is compatible with the threaded toothed ring (11) and the external threaded section (12).

8. The emergency pedestrian bridge constructed in an open space according to claim 1, characterized in that, The tie rod system (3) includes multiple tie rods (301) arranged in a double-row pattern; one end of each tie rod (301) is hooked to a corresponding hanging point, and the other end is joined to the horizontal connecting beam (5) and hinged to the horizontal connecting beam (5).

9. The emergency pedestrian bridge constructed in an open space according to claim 8, characterized in that, The tie rod (301) is a single-stage rod or a multi-stage telescopic rod; The multi-stage telescopic rod is driven by electricity or hydraulics.

10. A method of using an emergency pedestrian bridge constructed in an open space as described in any one of claims 1 to 9, characterized in that, include: Select a preset number of main bridge beams (2), tie rod system (3), and rotor mechanism (4); wherein the preset number meets the load and obstacle span requirements; Inflate the airbag float unit (202) to the working pressure, and connect the main beam unit (201) to the airbag float unit (202) and the tie rod system (3) in sequence; The tie rod system (3) is connected to the cross connecting beam (5) to form a bridge span module (1) suspended by the rotor mechanism (4). The assembled bridge span module (1) is hoisted to the target erection position using a rotor mechanism (4); Once the preset number of bridge modules (1) are in place, the bridge modules (1) are longitudinally connected by expanding the connection port (18); The two ends of the bridge span module (1) that has been connected are placed at the support points on both banks. The overall length of the bridge deck is finely adjusted by controlling the tie rod system (3). Then, the stabilizing cable (9) is led out from the airbag floating unit (202) and anchored to the ground (10). Maintain the levitation force of the rotor mechanism (4), maintain the balance of the bridge deck, and allow personnel to pass through the bridge deck; After the personnel have passed through, the anchoring of the stabilizing sling (9) is released, the connected bridge span modules (1) are disassembled, and the modules are lifted away and transported back by the rotor mechanism (4).

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