Underwater bridge pier air bag method construction structure

Abstract

The invention discloses an underwater bridge pier air bag method construction structure, and relates to the technical field of bridge pier construction. The underwater pier air bag method construction structure comprises a pier bottom and a plurality of pier body assembling blocks which are sequentially assembled on the top of the pier bottom from bottom to top, and an air bag buoyancy adjusting device is arranged on the pier bottom. According to the underwater pier air bag method construction structure, the pier bottom is made to suspend on the water surface through the air bag buoyancy adjusting device, it is ensured that the top of the pier bottom is exposed out of the water surface, a water-free installation environment is provided for pier body assembling blocks, dependence on the water depth in traditional cofferdam construction is eliminated, and the construction efficiency is improved regardless of the water depth. A stable dry working face can be provided for constructors, and construction convenience and safety are greatly improved.

Description

Technical Field

[0001] This application relates to the technical field of pier construction, and particularly to a construction structure for underwater piers using the airbag method. Background Art

[0002] Piers are important components of bridge structures, mainly serving to support the upper structure of the bridge and transfer loads to the foundation. In bridge construction, the construction quality of piers is directly related to the stability and safety of the bridge. When constructing piers in water, in order to avoid the adverse impact of water flow on pier construction, it is usually necessary to set up temporary water-blocking and diversion structures to provide a dry-pit working surface, and such structures are called cofferdams. After the cofferdam construction is completed, underwater concrete is poured on the river bottom inside the cofferdam for bottom sealing. After solidification, the water is pumped out, and then pier construction can be carried out.

[0003] Currently, when constructing piers in water, common cofferdams include earth-rock cofferdams, steel sheet pile cofferdams, and steel caisson cofferdams, etc. Earth-rock cofferdams are temporary water-blocking structures formed by piling clay or rubble in water. Although they are convenient to construct and have low costs, due to the characteristics of earth-rock materials, their safety is relatively low when the water flow velocity is relatively large or the water depth is relatively deep, and they are only applicable to shallow water environments with a water depth not exceeding 3 meters. Steel sheet pile cofferdams and steel caisson cofferdams are respectively temporary water-blocking structures constructed with steel sheet piles and steel caissons. Although they have good waterproof performance and relatively strong overall stiffness, as the water depth increases, their safety will be significantly reduced, and they are generally only used in ordinary river channels with a water depth not exceeding 7 meters.

[0004] Constructing deep-water piers faces many challenges, including large water depth, fast water flow velocity, complex geological conditions, and harsh construction environments, etc. Traditional cofferdam construction methods are difficult to effectively resist water flow impact in deep-water construction, and it is extremely difficult to sink and position cofferdams under deep-water conditions, resulting in relatively low safety. Therefore, traditional cofferdam construction methods have obvious limitations in deep-water construction and are not applicable to deep-water pier construction. Summary of the Invention

[0005] The purpose of this application is to provide a construction structure for underwater piers using the airbag method to solve the problem that traditional cofferdam methods are not applicable to deep-water pier construction.

[0006] The technical solution adopted by this application to solve its technical problems is:

[0007] Provide a construction structure for underwater piers using the airbag method, including a pier bottom and a number of pier body assembly blocks sequentially assembled upward from the top of the pier bottom, and an airbag buoyancy adjustment device is provided on the pier bottom.

[0008] Furthermore, the airbag buoyancy adjustment device includes an inflation mechanism and a number of airbags communicated with the inflation mechanism, and the number of airbags are arranged on the pier bottom along the circumferential direction of the pier bottom.

[0009] Furthermore, the inflation mechanism includes a number of inflation devices, and the number of the inflation devices corresponds to the number of the air bags one by one. The inflation devices are communicated with the corresponding air bags through inflation pipes.

[0010] Furthermore, the inflation mechanism further includes a controller, and the controller is connected to all the inflation devices.

[0011] Furthermore, the pier body assembling block is a tubular structure with openings at both the top and bottom. An installation cavity for communicating with the inner cavity of the pier body assembling block is provided at the top of the pier bottom, and the inflation mechanism is arranged in the installation cavity.

[0012] Furthermore, a number of air bag installation chambers are provided along the circumferential direction of the pier bottom. The air bag installation chambers are communicated with the outside of the pier bottom, and the air bags are arranged in the air bag installation chambers.

[0013] Furthermore, the pier bottom includes an enlarged bottom plate and a pier pipe arranged on the enlarged bottom plate. The inner cavity of the pier pipe forms the installation cavity.

[0014] Furthermore, the pier bottom further includes a circle of outer wall plates arranged outside the pier pipe. Two ends of the outer wall plates are respectively connected to the enlarged bottom plate and the pier pipe, and an annular channel is formed between the outer wall plates, the pier pipe and the enlarged bottom plate. A number of the air bag installation chambers are formed in the annular channel, and communication holes communicated with the air bag installation chambers are provided on the outer wall plates and / or the enlarged bottom plate.

[0015] Furthermore, a number of position adjusting devices are provided along the circumferential direction of the pier bottom.

[0016] Furthermore, the adjusting device includes a turbine.

[0017] Advantages of the present application:

[0018] 1. The underwater bridge pier air bag method construction structure provided by the embodiment of the present application enables the pier bottom to float on the water surface through the air bag buoyancy adjusting device, and ensures that the top of the pier bottom is exposed above the water surface, providing a water-free installation environment for the pier body assembling block, getting rid of the dependence on water depth in traditional cofferdam construction. No matter how deep the water is, it can provide a stable dry working surface for construction workers, greatly improving the construction convenience and safety.

[0019] 2. During the assembling process of the pier body assembling block in the present application, the air bag buoyancy adjusting device can flexibly adjust the buoyancy according to the actual situation, ensuring that the working surface in each assembling stage is always exposed above the water surface. This dynamic adjusting ability not only ensures the continuity of the construction process, but also effectively avoids construction interruption caused by water flow impact or water level change, significantly improving the construction efficiency and construction safety.

[0020] 3. This application abandons traditional earth-rock cofferdams, steel sheet pile cofferdams, and steel casing cofferdams, avoiding the complex sinking, positioning, and demolition processes during cofferdam construction. It not only reduces the use of cofferdam materials and construction costs but also lowers the construction risks brought about by cofferdam failure or improper demolition, having significant economic and safety advantages.

[0021] 4. This application has strong adaptability to water depth, water flow velocity, and geological conditions and can be widely applied to the construction of deep-water bridge piers in different environments. Since it does not require a large amount of earth-rock or steel, it reduces the consumption of natural resources and the impact on the ecological environment, conforming to the concept of green construction and having good prospects for popularization and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of this application and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

[0023] Figure 1 is a schematic diagram of the underwater bridge pier airbag method construction structure provided by the embodiments of this application;

[0024] Figure 2 is Figure 1 a cross-sectional view along line A-A in

[0025] Figure 3 is a state diagram when hoisting the pier bottom using the hoisting equipment on the hoisting ship;

[0026] Figure 4 is a state diagram when hoisting the pier body assembly block using the hoisting equipment on the hoisting ship.

[0027] Reference Numerals:

[0028] 1 - Pier bottom;

[0029] 11 - Enlarged bottom plate;

[0030] 111 - Communication hole;

[0031] 12 - Pier tube;

[0032] 121 - Installation cavity; 122 - Installation hole;

[0033] 13 - Outer wall plate;

[0034] 131 - Airbag installation chamber;

[0035] 14 - Inner partition wall;

[0036] 2 - Pier body assembly block;

[0037] 3 - Airbag buoyancy adjustment device;

[0038] 31 - Inflation mechanism;

[0039] 311 - Inflation equipment; 312 - Inflation pipe; 313 - Controller;

[0040] 32 - Airbag;

[0041] 4 - Position adjustment device;

[0042] 5 - Hoisting ship;

[0043] 51 - Hoisting equipment. Specific embodiments

[0044] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present application. Without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other.

[0045] In the description of the present application, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application. Without special instructions, in the case of satisfying the relative positional relationship shown in the accompanying drawings, the above-described orientation description can be flexibly set during the actual application process.

[0046] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "set", "installed", "connected", and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0047] See Figure 1 、 Figure 2 , the embodiment of the present application provides an underwater bridge pier airbag method construction structure, including a pier bottom 1 and a plurality of pier body assembly blocks 2 assembled on the top of the pier bottom 1 in sequence from bottom to top. An airbag buoyancy adjustment device 3 is provided on the pier bottom 1.

[0048] The underwater pier airbag method construction structure provided by the embodiment of the present application mainly includes a pier bottom 1 and several pier body assembly blocks 2; the several pier body assembly blocks 2 are used to be assembled on the pier bottom 1 in sequence from bottom to top to form a pier. Among them, the pier bottom 1 and the several pier body assembly blocks 2 can be prefabricated and formed in a prefabrication factory in advance, and then transported to the construction site during pier construction. In order to shorten the transportation distance of the pier bottom 1 and the several pier body assembly blocks 2, the prefabrication factory can be set on the shore near the construction location. An airbag buoyancy adjustment device 3 is arranged on the pier bottom 1, which is used to adjust the buoyancy of the pier bottom 1 and the structure assembled by the pier bottom 1 and the pier body assembly blocks 2 in water, and further control the floating and sinking attitude and depth of the controller in water during pier construction.

[0049] The underwater pier airbag method construction structure provided by the embodiment of the present application can make the pier bottom 1 float on the water surface through the airbag buoyancy adjustment device 3, and ensure that the top of the pier bottom 1 is exposed above the water surface, providing a water-free installation environment for the pier body assembly blocks 2, getting rid of the dependence on water depth in traditional cofferdam construction. No matter how deep the water is, it can provide a stable dry working surface for construction workers, greatly improving the convenience and safety of construction.

[0050] During the construction process, when a pier body assembly block 2 is assembled, a new working surface is formed on the top of the pier body assembly block 2; the airbag buoyancy adjustment device 3 can flexibly adjust the buoyancy according to the actual situation to ensure that the working surface in each assembly stage is always exposed above the water surface. This dynamic adjustment ability not only ensures the continuity of the construction process, but also effectively avoids construction interruptions caused by water flow impact or water level changes, significantly improving the construction efficiency and construction safety.

[0051] Compared with the prior art, the present application abandons traditional earth-rock cofferdams, steel sheet pile cofferdams and steel casing cofferdams, avoiding the complex sinking, positioning and demolition processes in cofferdam construction. It not only reduces the use of cofferdam materials and construction costs, but also reduces the construction risks brought by cofferdam failure or improper demolition, having significant economic and safety advantages.

[0052] The present application also has strong adaptability to water depth, water flow velocity and geological conditions, and can be widely applied to the construction of deep-water piers in different environments. Since it does not require a large amount of earth-rock or steel, it reduces the consumption of natural resources and the impact on the ecological environment, conforming to the concept of green construction and having good prospects for popularization and application.

[0053] In some embodiments, referring to Figure 1 、 Figure 2 , the airbag buoyancy adjustment device 3 includes an inflation mechanism 31 and several airbags 32 communicated with the inflation mechanism 31, and the several airbags 32 are arranged on the pier bottom 1 along the circumferential direction of the pier bottom 1. Among them, the inflation mechanism 31 can be communicated with the airbags 32 through an inflation pipe.

[0054] The inflation mechanism 31 is the power source of the airbag buoyancy adjustment device 3. Its main function is to provide gas for the airbag 32 to achieve the inflation operation of the airbag 32, thereby adjusting the buoyancy. The airbag 32 is the core component of the airbag buoyancy adjustment device 3. Its main function is to provide buoyancy for the pier bottom 1 and the structure assembled by the pier bottom 1 and the pier body assembly block 2 in water, so as to achieve the suspension and height adjustment of the pier during underwater construction.

[0055] The airbag buoyancy adjustment device 3 provided by the embodiment of the present application can adjust the inflation amount in the airbag 32 in real time according to the construction progress and hydrological conditions, realizing the dynamic adjustment of buoyancy. This adjustment ability makes the construction process more flexible and can adapt to complex construction environments.

[0056] During the pier construction process, as the pier body assembly block 2 is assembled, in order to ensure that the working surface of each assembly stage is always exposed above the water surface, the required buoyancy will gradually increase. At this time, the airbag buoyancy adjustment device 3 can be controlled to increase the buoyancy. The specific operation process is as follows: The inflation mechanism 31 inflates the airbag 32, causing the airbag 32 to expand and increase in volume, thereby increasing the buoyancy. The size of the inflation amount can be precisely controlled according to construction requirements to ensure the suspension height required for the pier during underwater construction.

[0057] In other embodiments, the inflation mechanism 31 can also have a deflation function. When it is necessary to reduce the buoyancy, the inflation mechanism 31 can discharge the gas in the airbag 32, causing the airbag 32 to contract and decrease in volume, thereby reducing the buoyancy. This deflation operation can be used after the construction is completed or in case of special situations to ensure the stability and safety of the construction structure.

[0058] The inflation mechanism 31 can include an inflation device 311. An inflation device 311 is respectively connected to a plurality of airbags 32 through a plurality of inflation pipes 312. During construction, all the airbags 32 are inflated simultaneously through an inflation device 311. Of course, the inflation device 311 can also have a deflation function to discharge the gas in the airbag 32.

[0059] In some embodiments, referring to Figure 1 、 Figure 2 , the inflation mechanism 31 includes a plurality of inflation devices 311. The plurality of inflation devices 311 correspond to the plurality of airbags 32 one by one. The inflation device 311 is connected to the corresponding airbag 32 through an inflation pipe 312. Among them, the inflation device 311 can include an electric air pump, a high-pressure air pump, etc. Of course, the inflation device 311 can also adopt other existing structures as long as it can achieve the inflation of the airbag 32.

[0060] Correspondingly, each inflating device 311 is connected to the corresponding airbag 32 through an inflation pipe 312, enabling independent inflation operations for each airbag 32. This design allows for precise control of the buoyancy of each airbag 32, thereby achieving fine-tuning of the buoyancy of the bridge pier. For example, under complex water flow conditions, the airbags 32 at different positions can be independently adjusted according to the water flow impact forces in different directions, enhancing the overall stability of the structure. Especially during deep-water construction, this independent adjustment ability can ensure that the bottom of the pier 1 always remains horizontal, providing a more stable platform for the pier body assembly block 2. During the construction process, if a certain airbag 32 leaks or experiences other abnormal conditions, it can be maintained or replaced individually without affecting the normal operation of other airbags 32, eliminating the need to interrupt the entire construction process and improving the construction continuity.

[0061] In some embodiments, referring to Figure 1 、 Figure 2 ,the inflating mechanism 31 further includes a controller 313, and the controller 313 is connected to all the inflating devices 311.

[0062] The controller 313 can receive signals from the pressure sensors within the inflating devices 311 in real time and automatically control the inflation and deflation operations of each inflating device according to the preset pressure value or inflation requirements. This automated control method can precisely adjust the buoyancy of the airbag 32 to ensure that the buoyancy always meets the construction requirements. Through the centralized control of the controller 313, the operator does not need to manually adjust each inflating device 311. By simply setting relevant parameters on the control panel of the controller 313, automated inflation and deflation operations can be achieved, reducing the operation difficulty, minimizing manual intervention, and improving the construction efficiency.

[0063] During the construction process of the bridge pier, the inflating mechanism 31 can be arranged on the hoisting ship 5, and the inflating mechanism 31 is connected to the airbag 32 through an inflation pipe. Among them, the length of the inflation pipe should be set according to the water depth at the construction location to ensure the normal construction of the bridge pier.

[0064] In some embodiments, referring to Figure 1 、 Figure 2 ,the pier body assembly block 2 is a tubular structure with openings at both the top and bottom, and the top of the pier bottom 1 is provided with an installation cavity 121 for communicating with the inner cavity of the pier body assembly block 2, and the inflating mechanism 31 is arranged in the installation cavity 121.

[0065] Correspondingly, by arranging the inflating mechanism 31 inside the installation cavity 121 of the pier base 1, the occupation of external space is reduced, making the entire construction structure more compact, improving the space utilization rate, and facilitating the management and maintenance during the construction process. The pier body assembly block 2 adopts a tubular structure with upper and lower openings and is communicated with the installation cavity 121 of the pier base 1, providing a direct inflating channel for the inflating mechanism 31, which can simplify the inflating process, reduce the complexity of the inflating pipeline layout, and reduce the risk of inflating failure caused by external factors, thereby improving the construction efficiency and safety.

[0066] In some embodiments, referring to Figure 1 , Figure 2 , a plurality of airbag installation chambers 131 are provided along the circumferential direction of the pier base 1, the airbag installation chambers 131 are communicated with the outside of the pier base 1, and the airbags 32 are arranged in the airbag installation chambers 131.

[0067] Correspondingly, the airbag installation chambers 131 provide a stable installation space for the airbags 32, enabling the airbags 32 to expand and contract within this space. At the same time, the airbag installation chambers 131 are communicated with the outside of the pier base 1, allowing water flow to enter the airbag installation chambers 131 to contact the airbags 32, thereby causing the airbags 32 to generate buoyancy.

[0068] Arranging the airbags 32 in the airbag installation chambers 131 can reduce the displacement or deformation of the airbags 32 due to water flow impact or external force, ensuring that the airbags 32 always maintain a stable state during operation. Compared with directly installing the airbags 32 outside the pier base 1, this design significantly reduces the interference of the external complex environment on the airbags 32 and eliminates the need to set up complex connection structures between the airbags 32 and the pier base 1, thereby simplifying the construction process and improving the construction reliability and safety.

[0069] In some embodiments, referring to Figure 1 , Figure 2 , the pier base 1 includes an enlarged bottom plate 11 and a pier tube 12 arranged on the enlarged bottom plate 11, and the inner cavity of the pier tube 12 forms the installation cavity 121. Among them, the enlarged bottom plate 11 and the pier tube 12 can be integrally cast with reinforced concrete.

[0070] Correspondingly, the enlarged bottom plate 11 increases its contact area with the water body, improves the suspension stability, and can better disperse the load of the upper structure, reducing local stress concentration, thereby improving the stability of the entire pier structure. The pier tube 12, as the main structure of the pier base 1, provides sufficient vertical bearing capacity and compressive strength, and at the same time provides a stable support platform for the pier body assembly block 2. The inner cavity of the pier tube 12 forms the installation cavity 121, providing an independent installation space for the inflating mechanism 31.

[0071] The airbag 32 can be installed between the outer surface of the pier pipe 12 and the upper surface of the enlarged base plate 11. Installation holes 122 can be provided on the pipe wall of the pier pipe 12. The air charging pipe 312 passes through the installation hole 122, and a sealing material is provided between them to prevent water flow from passing through the installation hole 122 and entering the pier pipe 12. One end of the air charging pipe 312 is communicated with the airbag 32, and the other end of the air charging pipe 312 is communicated with the air charging device 311.

[0072] In some embodiments, referring to Figure 1 , Figure 2 , the pier bottom 1 further includes a circle of outer wall plates 13 provided outside the pier pipe 12. The two ends of the outer wall plate 13 are respectively connected to the enlarged base plate 11 and the pier pipe 12, and an annular channel is formed between the outer wall plate 13, the pier pipe 12 and the enlarged base plate 11. A number of airbag installation chambers 131 are formed in the annular channel. Communication holes 111 communicated with the airbag installation chambers 131 are provided on the outer wall plate 13 and / or the enlarged base plate 11. Exemplarily, a number of inner partition walls 14 are provided in the annular channel to divide the annular channel into a number of airbag installation chambers 131. Among them, the enlarged base plate 11, the pier pipe 12, the outer wall plate 13 and the inner partition wall 14 can be integrally cast and formed by reinforced concrete.

[0073] Correspondingly, the annular channel and the airbag installation chambers 131 jointly formed by the outer wall plate 13, the enlarged base plate 11 and the pier pipe 12 provide a stable installation space for the airbag 32. The airbag installation chambers 131 are communicated with the outside through the communication holes 111, allowing water flow to enter the chambers and contact the airbag, so as to provide buoyancy for the airbag. Among them, the communication holes 111 can be provided on the enlarged base plate 11, or on the outer wall plate 13, or on both the enlarged base plate 11 and the outer wall plate 13 at the same time. The size and quantity of the communication holes 111 should be set according to strength calculation and are not specifically limited herein.

[0074] In some embodiments, referring to Figure 1 , Figure 2 , a number of position adjusting devices 4 are provided on the pier bottom 1 along its circumferential direction. The position adjusting device 4 can accurately adjust the position of the pier bottom 1, ensure that the verticality and horizontality of the bridge pier meet the construction requirements, reduce the rework and adjustment time caused by position deviation, and significantly improve the construction efficiency. Exemplarily, the position adjusting device 4 can include turbines, and a number of turbines are evenly distributed on the outer surface of the outer wall plate 13 along the circumferential direction of the pier bottom 1. During the construction process, by controlling the rotation of the turbines at different positions, the adjustment of the position of the pier bottom 1 is realized.

[0075] Referring to Figure 3 , Figure 4 , the construction method of the underwater bridge pier airbag method construction structure provided by the embodiment of the present application includes the following steps:

[0076] S1. Use the hoisting ship 5 to transport the pier bottom 1 and the pier body assembly block 2 to the predetermined position. Use the hoisting equipment 51 on the hoisting ship 5 to lift the pier bottom 1 into the water. Use the airbag buoyancy adjustment device 3 to adjust the buoyancy of the pier bottom 1, and unhook after the height of the top of the pier bottom 1 above the water surface meets the requirements.

[0077] S2. Use the hoisting equipment 51 on the hoisting ship 5 to successively lift several pier body assembly blocks 2 onto the pier bottom 1 for assembly; after the installation of the previous pier body assembly block 2 is completed, use the airbag buoyancy adjustment device 3 to adjust the buoyancy of the pier bottom 1, and unhook after the height of the top of the previous pier body assembly block 2 above the water surface meets the requirements, and then use the hoisting equipment 51 on the hoisting ship 5 to hoist the next pier body assembly block 2.

[0078] During the construction process, the pier bottom 1 and the pier body assembly block 2 and between adjacent pier body assembly blocks 2 should be sealed and fixedly connected to prevent water flow from entering the pier interior from the splicing position. When the pier body assembly block 2 is a hollow tubular structure, after all the pier body assembly blocks 2 are assembled and the pier bottom 1 sinks to the bottom, a pier with a hollow structure can be formed. Of course, after construction, post-cast core concrete can also be poured into the pier with a hollow structure to form a pier with a solid structure or a pier with a solid lower part and a hollow upper part.

[0079] The construction method provided by the embodiment of the present application can make the pier bottom 1 float on the water surface through the airbag buoyancy adjustment device 3 and ensure that the top of the pier bottom 1 is exposed above the water surface, providing a water-free installation environment for the pier body assembly block 2, getting rid of the dependence on water depth in traditional cofferdam construction. Regardless of the water depth, it can provide a stable dry working surface for construction workers, greatly improving the convenience and safety of construction. During the construction process, when the installation of a pier body assembly block 2 is completed, a new working surface is formed at the top of the pier body assembly block 2; the airbag buoyancy adjustment device 3 can flexibly adjust the buoyancy according to the actual situation to ensure that the working surface in each assembly stage is always exposed above the water surface. This dynamic adjustment ability not only ensures the continuity of the construction process but also effectively avoids construction interruptions caused by water flow impact or water level changes, significantly improving the construction efficiency and construction safety.

[0080] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present application should be covered within the protection scope of the present application.

Claims

1. An underwater bridge pier airbag construction structure, characterized in that: It comprises a pier bottom (1) and a plurality of pier body assembly blocks (2) assembled in sequence from bottom to top on the top of the pier bottom (1); an air bag buoyancy regulating device (3) is provided on the pier bottom (1).

2. The underwater bridge pier airbag construction structure according to claim 1 is characterized in that: The airbag buoyancy regulating device (3) comprises an inflation mechanism (31) and a plurality of airbags (32) connected to the inflation mechanism (31); the plurality of airbags (32) are arranged on the pier bottom (1) along the circumference of the pier bottom (1).

3. The underwater bridge pier airbag construction structure according to claim 2 is characterized in that: The inflation mechanism (31) comprises a plurality of inflation devices (311), the plurality of inflation devices (311) corresponding to a plurality of air bags (32) one by one, and the inflation devices (311) are connected to the corresponding air bags (32) via inflation tubes (312).

4. The underwater bridge pier airbag construction structure according to claim 3 is characterized in that: The inflation mechanism (31) further comprises a controller (313), and the controller (313) is connected to all inflation devices (311).

5. The underwater bridge pier airbag construction structure according to claim 2, 3 or 4, characterized in that: The pier body assembly block (2) is a tubular structure with openings at the top and bottom, the top of the pier bottom (1) is provided with a mounting cavity (121) for communicating with the inner cavity of the pier body assembly block (2), and the inflation mechanism (31) is arranged in the mounting cavity (121).

6. The underwater bridge pier airbag construction structure according to claim 5 is characterized in that: A plurality of airbag installation chambers (131) are arranged along the circumference of the pier bottom (1); the airbag installation chambers (131) are communicated with the outside of the pier bottom (1); and the airbags (32) are arranged in the airbag installation chambers (131).

7. The underwater bridge pier airbag construction structure according to claim 6 is characterized in that: The pier bottom (1) comprises an enlarged bottom plate (11) and a pier tube (12) arranged on the enlarged bottom plate (11), and the inner cavity of the pier tube (12) forms the installation cavity (121).

8. The underwater bridge pier airbag construction structure according to claim 7 is characterized in that: The pier bottom (1) also includes a circle of outer wall plates (13) arranged outside the pier tube (12), the two ends of the outer wall plates (13) are respectively connected to the enlarged bottom plate (11) and the pier tube (12), and an annular channel is formed between the outer wall plates (13), the pier tube (12) and the enlarged bottom plate (11), a plurality of airbag installation chambers (131) are formed in the annular channel, and the outer wall plates (13) and / or the enlarged bottom plate (11) are provided with connecting holes (111) connected to the airbag installation chambers (131).

9. The underwater bridge pier airbag construction structure according to claim 1 is characterized in that: A plurality of position adjustment devices (4) are provided on the pier bottom (1) along its circumference.

10. The underwater bridge pier airbag construction structure according to claim 9 is characterized in that: The regulating device (4) comprises a turbine.

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