Fabricated air-supported floating bridge and rapid building method thereof

Abstract

The invention relates to an assembly type air-supported floating bridge and a rapid building method thereof, and belongs to the technical field of bridge engineering, the assembly type air-supported floating bridge comprises two wharf bridge abutments, a bridge frame, a covering plate, a plurality of flexible air cylinders and two air supply mechanisms, and the bridge frame is internally provided with a plurality of fixed channels which are distributed at intervals and penetrate through the two ends of the bridge frame in the length direction; the cover plate is fixed in parallel to the top of the bridge; the multiple flexible air cylinders are arranged in the multiple fixed channels in a penetrating mode and float on the river surface of the river channel, the flexible air cylinders are filled with high-pressure gas, and air inlet and outlet holes are formed in the cylinder walls of the flexible air cylinders; and a plurality of air supply ports of the two air supply mechanisms are respectively communicated with the air inlet and outlet holes of the corresponding flexible inflators. The multiple fixed channels distributed at intervals are formed in the bridge frame, then the multiple flexible air cylinders are arranged in the multiple fixed channels in a penetrating mode, and meanwhile the air supply mechanism always provides high-pressure air for the multiple flexible air cylinders, so that the suspension capacity of the floating bridge can be guaranteed, and it is also guaranteed that the bridge body has certain rigidity; and the bearing capacity and the non-deformability of the floating bridge are enhanced.

Description

Technical Field

[0001] This invention relates to the field of bridge engineering technology, and in particular to a prefabricated air-supported floating bridge and its rapid construction method. Background Technology

[0002] Floating bridges, as temporary or semi-permanent passages across waterways, play an irreplaceable role in emergency rescue, military operations, and temporary transportation. Traditional floating bridges are mainly divided into pontoon bridges (using rigid floating units) and fixed floating bridges (such as pontoon-type bridges), and their development aims to improve load-bearing capacity, mobility, and environmental adaptability.

[0003] In existing technologies, floating bridge designs mostly revolve around rigid floating bodies. For example, patent number CN2578385Y, entitled "An Airbag-Assisted Floating Bridge," introduces airbags as auxiliary buoyancy units, but the bridge itself remains a traditional rigid frame structure. The arrangement of the airbags and their integration with the bridge structure are relatively simple, limiting its flexibility and stability in complex waters or when rapid buoyancy adjustment is needed to cope with load changes. Another example is patent number CN111139726A, entitled "An Emergency Floating Bridge Based on Inflatable Airbags." This design uses multiple independent inflatable airbags as the main buoyancy units, with the bridge deck directly laid on these side-by-side airbags. It offers good modularity and rapid deployment capabilities. However, the simple stacking relationship between the bridge deck and the airbags results in weak lateral stiffness and torsional resistance of the overall structure. Especially when subjected to asymmetrical loads or lateral water flow forces, the bridge structure is prone to deformation and instability, leading to limited load-bearing capacity.

[0004] Therefore, how to design a prefabricated air-supported floating bridge that is easy to assemble and disassemble, has a wide range of applications, good versatility, and strong load-bearing capacity is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] This invention provides a prefabricated air-bearing floating bridge, which solves the technical problems of existing floating bridges, such as inconvenient assembly and disassembly, narrow applicability, poor versatility, and limited load-bearing capacity.

[0006] The technical solution of this invention to solve the above-mentioned technical problems is as follows: a prefabricated air-supported floating bridge, comprising: two dock piers, a bridge frame, a cover plate, multiple flexible air cylinders, and two air supply mechanisms. The two dock piers are respectively fixed on both banks of a river. The two ends of the bridge frame along its length are respectively fixed to the two dock piers, and its interior has multiple fixed channels spaced apart along its width and penetrating both ends of the bridge frame along its length. The cover plate is fixed parallel to the top of the bridge frame. The multiple flexible air cylinders are respectively inserted into the multiple fixed channels and float on the river surface. Both ends of the multiple flexible air cylinders are closed ends, and their two closed ends respectively extend out of the two ends of the corresponding fixed channels. The interior of the multiple flexible air cylinders is filled with high-pressure gas, and each cylinder wall is provided with an inlet and outlet port. The two air supply mechanisms are respectively fixed to the two dock piers and each has multiple air supply ports. The multiple air supply ports of the two air supply mechanisms are respectively connected to the inlet and outlet ports of the corresponding flexible air cylinders to provide high-pressure gas to the flexible air cylinders and assist the bridge frame in supporting the passage of heavy objects.

[0007] The beneficial effects of this invention are: a novel prefabricated air-supported floating bridge structure is designed by first opening multiple fixed channels spaced apart inside the bridge frame, and then inserting multiple flexible air cylinders into the multiple fixed channels to form an embedded combination. At the same time, since the air supply mechanism always provides high-pressure gas to the multiple flexible air cylinders, it can ensure the levitation ability of the floating bridge and also ensure that the bridge body has a certain rigidity, greatly enhancing the load-bearing capacity and deformation resistance of the floating bridge.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, the cable tray includes multiple truss units, which are arranged in an array and detachably connected by bolts. Each of the multiple truss units has a hollow structure that extends through both ends. The fixed channel is a hollow structure inside the multiple truss units in the same row.

[0010] The further beneficial effect of adopting the above is that multiple truss units can be disassembled and spliced ​​into a bridge frame, which can not only improve the convenience of disassembly and assembly, but also expand the range of applications (assembling bridge frames of different lengths according to the width of the river channel).

[0011] Furthermore, the cable tray also includes multiple support members, all of which are "human" or "X" shaped structures. The three support members are grouped together, and the three support members in each group are respectively fixed to the top and both sides of the truss unit.

[0012] The further beneficial effect of adopting the above is that by using three support members to fix the top and both sides of the truss unit respectively, the structural stability of the support frame can be enhanced, thereby improving the structural stability of the cable tray.

[0013] Furthermore, the cover plate includes multiple cover panels, which are sequentially and parallelly spliced ​​and fixed to the top of the cable tray.

[0014] The further beneficial effect of adopting the above is that dividing the entire cover panel into multiple cover panels can enhance adaptability and improve the ease of disassembly and assembly.

[0015] Furthermore, it also includes multiple anchors and multiple anchor cables, with the multiple anchors fixed at intervals on the two wharf abutments; one end of each of the multiple anchor cables is fixed to a closed end of a multiple flexible air cylinder and the other end is fixed to the multiple anchors.

[0016] The further beneficial effect of adopting the above is that by fixing the two ends of the anchor cable to the anchor and the flexible air cylinder respectively, the firmness of the flexible air cylinder can be enhanced.

[0017] Furthermore, all of the aforementioned anchor cables are made of carbon fiber.

[0018] Furthermore, it also includes multiple connecting cables, with both ends of the multiple connecting cables respectively fixed to the cylinder walls of two adjacent flexible air cylinders.

[0019] The further beneficial effect of adopting the above method is that by fixing the two ends of the connecting cable to the cylinder walls of two adjacent flexible air cylinders respectively, the connection between adjacent flexible air cylinders can be strengthened.

[0020] Furthermore, all of the connecting cables are made of carbon fiber.

[0021] Furthermore, it also includes two guardrails, which are distributed on both sides of the cover plate and fixed to both sides of the cable tray respectively.

[0022] Furthermore, it also includes multiple pressure gauges, each of which has a detection hole; the multiple pressure gauges are respectively fixed at the multiple detection holes.

[0023] In addition, a method for rapid assembly of prefabricated air-supported floating bridges is provided, with the specific steps as follows:

[0024] S1. Construct wharves and bridges on both sides of the river. S2. Based on the width of the river channel, multiple truss units are assembled into a bridge frame; S3. First, lay the bridge across the river, then fix both ends of the bridge to the two dock platforms respectively. S4. Multiple flexible air cylinders are respectively installed in multiple fixed channels of the cable tray; S5. Secure multiple cover panels sequentially and in parallel to the top of the cable tray; S6. Multiple gas supply ports of the two gas supply mechanisms inject high-pressure gas into multiple flexible gas cylinders through the inlet and outlet ports of multiple flexible gas cylinders in a fixed quantity. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural schematic diagram of a prefabricated air-supported floating bridge according to the present invention; Figure 2 This is a schematic diagram of the connection structure of the wharf abutment, bridge frame, flexible air cylinder, anchors and anchor cables in a prefabricated air-bearing floating bridge according to the present invention. Figure 3 for Figure 2 Enlarged local structure at point A; Figure 4 This is a three-dimensional structural diagram of the bridge frame and flexible air cylinder in a prefabricated air-bearing floating bridge according to the present invention. Figure 5 This is a cross-sectional structural diagram of the bridge frame and flexible air cylinder in a prefabricated air-bearing floating bridge according to the present invention. Figure 6 This is a structural schematic diagram of a truss unit in a prefabricated air-supported floating bridge according to the present invention; Figure 7 This is a three-dimensional structural diagram of the flexible air cylinder in a prefabricated air-bearing floating bridge according to the present invention.

[0026] The attached diagram lists the components represented by each number as follows: 1. Dock abutment, 2. Cable tray, 21. Truss unit, 22. Support component, 3. Cover plate, 31. Cover plate, 4. Flexible air cylinder, 5. Air supply mechanism, 6. Anchor, 7. Anchor cable, 8. Connecting cable, 9. Guardrail. Detailed Implementation

[0027] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0028] like Figure 1As shown, a prefabricated air-supported floating bridge includes: two dock piers 1, a bridge frame 2, a cover plate 3, multiple flexible air cylinders 4, and two air supply mechanisms 5. The two dock piers 1 are fixed on both banks of the river. The two ends of the bridge frame 2 along its length are fixed to the two dock piers 1, and its interior has multiple fixed channels spaced apart along its width and extending through both ends of the bridge frame 2 along its length. The cover plate 3 is fixed parallel to the top of the bridge frame 2. The multiple flexible air cylinders 4 are respectively inserted into the multiple fixed channels and float on the river surface. Both ends of the multiple flexible air cylinders 4 are closed ends, and their two closed ends respectively extend through the two ends of the corresponding fixed channels. The interior of the multiple flexible air cylinders 4 is filled with high-pressure gas, and each of its cylinder walls has air inlet and outlet holes. The two air supply mechanisms 5 are respectively fixed to the two dock piers 1, and each of them has multiple air supply ports. The multiple air supply ports of the two air supply mechanisms 5 are respectively connected to the air inlet and outlet holes of the corresponding flexible air cylinders 4 to provide high-pressure gas to the flexible air cylinders 4 to assist the bridge frame 2 in supporting the passage of heavy objects.

[0029] like Figure 2 , Figure 4 and Figure 6 As shown, in some specific embodiments, the cable tray 2 may include multiple truss units 21, which are arranged in an array and detachably connected by bolts. Each of the multiple truss units 21 has a hollow structure that runs through both ends. The fixed channel consists of multiple hollow structures in the same row.

[0030] like Figure 2 , Figure 4 and Figure 6 As shown, in some specific embodiments, the cable tray 2 may also include multiple support members 22, all of which are "human" or "X" shaped structures. Three support members 22 are grouped together, and the three support members 22 in each group are respectively fixed to the top and both sides of the truss unit 21.

[0031] like Figure 1 As shown, in some specific embodiments, the cover plate 3 may include multiple cover plates 31, which are sequentially and parallelly spliced ​​and fixed to the top of the cable tray 2.

[0032] like Figure 2 and Figure 3 As shown, in some specific embodiments, it may also include multiple anchors 6 and multiple anchor cables 7, with the multiple anchors 6 fixed at intervals on the two wharf abutments 1; one end of the multiple anchor cables 7 is fixed to a closed end of a multiple flexible air cylinder 4 and the other end is fixed to the multiple anchors 6.

[0033] Specifically, carbon fiber material can be used for all of the multiple anchor cables 7.

[0034] like Figure 5As shown, in some specific embodiments, multiple connecting cables 8 may also be included, with the two ends of the multiple connecting cables 8 respectively fixed to the cylinder walls of two adjacent flexible air cylinders 4.

[0035] Specifically, all of the multiple connecting cables 8 can be made of carbon fiber.

[0036] like Figure 1 As shown, in some specific embodiments, two guardrails 9 are also included, which are distributed on both sides of the cover plate and fixed to both sides of the cable tray 2 respectively.

[0037] In addition, a method for rapid assembly of prefabricated air-supported floating bridges is provided, including the following specific steps: S1. Construct wharf bridges on both sides of the river. S2. First, span the river across the bridge 2, and then fix both ends of the bridge 2 to the two dock abutments 1 respectively. S3, multiple flexible air cylinders 4 are respectively installed in multiple fixed channels of the cable tray 2; S4. Fix the cover plate 3 parallel to the top of the cable tray 2; S5. Multiple air supply ports of the two air supply mechanisms 5 inject high-pressure gas into multiple flexible air cylinders 4 through the inlet and outlet ports of multiple flexible air cylinders 4 in a fixed quantity.

[0038] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A prefabricated air-supported floating bridge, characterized in that, include: Two dock piers (1), the two dock piers (1) are fixed on both sides of the river; The cable tray (2) has two ends fixed to the two dock piers (1) in the length direction and has multiple fixed channels that are spaced apart along the width direction and pass through both ends of the cable tray (2) in the length direction. Cover plate (3), which is fixed parallel to the top of the cable tray (2); Multiple flexible air cylinders (4) are respectively installed in multiple fixed channels and float on the surface of the river. Both ends of the multiple flexible air cylinders (4) are closed ends and their two closed ends respectively pass through the two ends of the corresponding fixed channels. The interior of the multiple flexible air cylinders (4) is filled with high-pressure gas and their cylinder walls are provided with air inlet and outlet holes. Two gas supply mechanisms (5) are fixed on the two dock bridge platforms (1) respectively and each has multiple gas supply ports. The multiple gas supply ports of the two gas supply mechanisms (5) are respectively connected to the inlet and outlet holes of the corresponding flexible air cylinder (4) to provide high-pressure gas to the flexible air cylinder (4) to assist the bridge frame (2) in supporting the passage of heavy objects.

2. The prefabricated air-supported floating bridge according to claim 1, characterized in that, The cable tray (2) includes multiple truss units (21), which are arranged in an array and detachably connected by bolts. Each of the multiple truss units (21) has a hollow structure that runs through both ends. The fixed channel consists of multiple hollow structures in the same row.

3. A prefabricated air-supported floating bridge according to claim 2, characterized in that, The cable tray (2) also includes multiple support members (22), each of which is a "human" or "X" shaped structure. Three support members (22) are grouped together, and the three support members (22) in each group are respectively fixed to the top and sides of the truss unit (21).

4. The prefabricated air-supported floating bridge according to claim 1, characterized in that, The cover plate (3) includes multiple cover panels (31), which are sequentially and parallelly spliced ​​and fixed to the top of the cable tray (2).

5. A prefabricated air-supported floating bridge according to claim 1, characterized in that, It also includes multiple anchors (6) and multiple anchor cables (7), with the multiple anchors (6) fixed at intervals on the two wharf abutments (1); one end of the multiple anchor cables (7) is fixed to a closed end of the multiple flexible air cylinders (4) and the other end is fixed to the multiple anchors (6).

6. A prefabricated air-supported floating bridge according to claim 1, characterized in that, All of the anchor cables (7) mentioned above are made of carbon fiber.

7. A prefabricated air-supported floating bridge according to claim 1, characterized in that, It also includes multiple connecting cables (8), with the two ends of the multiple connecting cables (8) respectively fixed to the cylinder walls of two adjacent flexible air cylinders (4).

8. A prefabricated air-supported floating bridge according to claim 7, characterized in that, All of the connecting cables (8) are made of carbon fiber.

9. A prefabricated air-supported floating bridge according to claim 1, characterized in that, It also includes two guardrails (9), which are distributed on both sides of the cover plate and fixed on both sides of the cable tray (2).

10. A method for rapid assembly of a prefabricated air-supported floating bridge, characterized in that, The prefabricated air-supported floating bridge according to any one of claims 1-9 includes the following specific steps: S1. Construct wharves and bridges on both sides of the river (1). S2. First, place the bridge frame (2) across the river, and then fix both ends of the bridge frame (2) to the two dock abutments (1); S3. Multiple flexible air cylinders (4) are respectively installed in multiple fixed channels of the cable tray (2); S4. Fix the cover plate (3) parallel to the top of the cable tray (2); S5. The multiple gas supply ports of the two gas supply mechanisms (5) are used to quantitatively fill the multiple flexible gas cylinders (4) with high-pressure gas through the inlet and outlet ports of the multiple flexible gas cylinders (4).

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