Construction method for underwater turnover of dock gate

Abstract

The invention relates to the field of dock gate preparation, in particular to a construction method for underwater turnover of a dock gate, a dock gate structure located at a delivery point is included, a connecting part is arranged on one side of the dock gate structure, the connecting part comprises a first connecting part and a second connecting part, and the construction method comprises the following steps that S1, the dock gate structure is transported to a destination from the delivery point in a floating mode; s2, then a lifting device is erected, and the lifting device is connected with the first connecting part and the second connecting part; s3, the second connecting part is lifted so that the dock gate structure can be turned over, and the first connecting part and the second connecting part are synchronously tensioned by the lifting device; and S4, underwater turnover of the dock gate structure is completed.

Description

Technical Field

[0001] The invention relates to the field of dock door preparation, and in particular to a construction method for turning over a dock door underwater. Background Art

[0002] In dock and dry dock applications, dock doors are key structural components to ensure internal water level and dry conditions. In order to enhance the stability and durability of dock doors, dock doors usually require concrete pouring inside them, which helps increase the weight and impact resistance of dock doors.

[0003] In the traditional dock door transportation process, the dock door is usually transported to the destination by floating without pouring concrete. Although this method makes the dock door lighter and easier to operate during transportation, due to its large size and heavy weight, when the dock door arrives at the destination, it usually lies on the water surface. In this state, the internal space of the dock door is not easy to access, and pouring concrete becomes difficult. Due to the large size of the dock door and the complex internal structure, it is difficult to pour concrete smoothly, and the operating space of the operator is limited. Summary of the invention

[0004] The purpose of the present invention is to overcome the problem in the prior art that the dock door usually lies horizontally on the water surface after being floated, which makes its internal space difficult to access, resulting in difficulty in concrete pouring and increased difficulty in operation for construction personnel, and to provide a construction method for turning over the dock door underwater.

[0005] In a first aspect, the present invention provides a construction method for underwater turning over of a dock gate, comprising a dock gate structure located at a storage point, wherein a connecting portion is provided on one side of the dock gate structure, wherein the connecting portion comprises a first connecting portion and a second connecting portion, and the construction method is as follows:

[0006] S1, floating the dock door structure from the storage point to the destination;

[0007] S2, subsequently setting up a lifting device, wherein the lifting device is connected to the first connecting portion and the second connecting portion respectively;

[0008] S3, lifting the second connection part to flip the dock door structure, and the lifting device simultaneously tightens the first connection part and the second connection part;

[0009] S4, completing the underwater turning over of the dock door structure.

[0010] The present invention provides a construction method for underwater turning over of a dock door. By connecting the first connection part and the second connection part of the dock door structure respectively through a lifting device and applying a pulling force, the turning over process of the dock door can be effectively controlled. Due to the accuracy and controllability of the pulling force applied, the dock door can remain stable during the turning over process and will not cause unexpected tilting or loss of control. This control force not only improves the safety of the construction, but also ensures the smooth completion of the turning over, accurately controls the turning over of the dock door, reduces the time for adjustment and correction operations, and makes the entire construction process more efficient. Construction personnel can complete the underwater turning over of the dock door and subsequent construction steps in a shorter time, thereby improving the overall construction efficiency.

[0011] Preferably, the dock door structure is a sealed box, a plurality of cabins are arranged inside the dock door structure, and a fender is arranged on one side of the dock door structure.

[0012] When executing step S1, the following steps are specifically included:

[0013] S21, analyzing and calculating the transportation water level, and detecting obstacles on the transportation path;

[0014] S22. After ensuring normal navigation, the dock door structure at the storage point is moved to the water surface by using an air bag;

[0015] S23. Ensure that the fender is located on the side away from the water surface, and connect the transport device to the dock door structure;

[0016] S24, transporting the dock door structure to a destination by means of the transport device.

[0017] Ensure the safety of the dock door during transportation, reduce the risk of accidents during transportation, and ensure that the dock door arrives safely at its destination.

[0018] Preferably, the transport device includes a main tugboat, which is connected to the dock gate structure and used to drag the dock gate structure for movement. The transport device also includes an auxiliary tugboat, which is arranged parallel to the dock gate structure and connected to the dock gate structure, and used to prevent the dock gate structure from shaking when moving.

[0019] The main tugboat and the auxiliary tugboat work together to balance the load applied to the dock door structure during transportation and prevent structural problems caused by uneven stress. The presence of the auxiliary tugboat helps to disperse the stress generated during transportation and further improve the safety of transportation.

[0020] Preferably, the lifting device comprises a first lifting wheel, on which a first connecting cable is provided, and the lifting device further comprises a second lifting wheel, on which a second connecting cable is provided.

[0021] When executing step S2, the following steps are included:

[0022] S31, after the dock door structure is transported to the destination;

[0023] S32: The first connecting cable is connected to the first connecting portion, and the second connecting cable is connected to the second connecting portion;

[0024] S33, after the connection is completed, the connection between the dock door structure and the transportation device is released.

[0025] After the dock door structure arrives at the destination, it is connected using a lifting device to ensure that the dock door can be craned to reduce shaking and deviation when the transport device is untied, and to prepare for the subsequent turning over of the dock door.

[0026] Preferably, the second lifting wheel and the first lifting wheel can work independently.

[0027] When executing step S3, the following steps are included:

[0028] S41, the second lifting wheel applies an upward pulling force to the second connecting portion;

[0029] S42, after the second connection portion is subjected to force, the dock door structure gradually turns over;

[0030] S43, when the second connection part moves to the top, the first lifting wheel synchronously tightens the first connection part;

[0031] S44. The second lifting wheel and the first lifting wheel synchronously apply force to the second connection part and the first connection part until the dock door structure stops moving.

[0032] The connection part of the dock door is pulled by the first lifting wheel and the second lifting wheel respectively, so that the dock door is subjected to the pulling force transmitted by the lifting wheels through the connecting cables, so that the dock door structure begins to flip.

[0033] Preferably, the lifting device body is a lifting vessel.

[0034] Preferably, in step S44, after the dock door structure stops moving, the cabin is cast in sections, and after the casting is completed, a second turning is performed.

[0035] Install another fender on the dock door structure by turning it over for the second time

[0036] Preferably, the secondary turning method of the dock door structure is as follows:

[0037] S61, arranging a floating object at one end of the dock door structure in contact with the water surface;

[0038] S62: Subsequently, the first lifting wheel lowers the first connecting cable, and the second lifting wheel remains stationary;

[0039] S63, the dock door structure is overturned due to force;

[0040] S64, after the dock door structure flips over, the second lifting wheel starts to lower;

[0041] S65. After the side of the dock door structure provided with the first fender is in complete contact with the water surface, the second lifting wheel and the first lifting wheel stop working.

[0042] By setting the floating object at the end of the dock door structure that contacts the water surface, the buoyancy is used to help balance and stabilize the dock door structure, and to provide a support point for the dock door structure to flip, making it easier to flip. The pulling force applied by the lifting wheel and the floating object cooperate to achieve accurate flipping and stability of the dock door structure. During the flipping process, the control force of the lifting device and the auxiliary force of the floating object work together to ensure that the dock door structure completes the second flip smoothly and safely.

[0043] Preferably, the float abuts against an end of the dock door structure away from the first connecting portion.

[0044] Preferably, in step S65, after the dock door structure is flipped over, a second fender is provided on a side of the dock door structure away from the water surface.

[0045] Compared with the prior art, the present invention has the following beneficial effects:

[0046] 1. The present invention provides a construction method for underwater turning over of a dock door. By connecting the first connection part and the second connection part of the dock door structure respectively through a lifting device and applying a pulling force, the turning over process of the dock door can be effectively controlled. Due to the accuracy and controllability of the pulling force applied, the dock door can remain stable during the turning over process and will not cause unexpected tilting or loss of control. This control force not only improves the safety of construction, but also ensures the smooth completion of the turning over, accurately controls the turning over of the dock door, reduces the time for adjustment and correction operations, and makes the entire construction process more efficient. Construction personnel can complete the underwater turning over of the dock door and subsequent construction steps in a shorter time, thereby improving the overall construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a schematic diagram of the connection between the dock door structure and the lifting device of the present invention;

[0048] Figure 2 For the present invention Figure 1 A magnified schematic diagram of point A;

[0049] Figure 3It is a schematic diagram of the dock door structure of the present invention being turned over to a vertical state;

[0050] Figure 4 It is a schematic diagram of the second turning over of the dock door structure of the present invention;

[0051] Figure 5 It is a schematic diagram of the dock door structure of the present invention turning over 180°;

[0052] Figure 6 It is a schematic diagram of the connection between the dock door structure and the transportation device of the present invention.

[0053] Markings in the figure: 1-dock door structure; 11-first fender; 12-second fender; 2-connecting part; 21-first connecting part; 22-second connecting part; 3-lifting device; 31-first lifting wheel; 311-first connecting cable; 32-second lifting wheel; 321-second connecting cable; 4-transportation device; 41-main tugboat; 42-auxiliary tugboat; 5-floating object. DETAILED DESCRIPTION

[0054] The present invention is further described in detail below in conjunction with specific embodiments. However, this should not be understood as the scope of the above subject matter of the present invention being limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

[0055] Unless otherwise specified, in the description of the specific embodiments of the present invention, the terms indicating the orientation or position relationship such as "up", "down", "left", "right", "center", "inside", "outside", etc. are all based on the expression of the orientation or position relationship shown in the drawings, or are the orientation or position relationship when the invented product / equipment / device is usually used. These terms of orientation or position relationship are only for the convenience of describing the scheme of the present invention or simplifying the description in the specific embodiments, so as to facilitate the technicians to quickly understand the scheme, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific position relationship, and therefore cannot be understood as a limitation on the present invention.

[0056] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding devices / components / elements are required to be absolutely horizontal or vertical or overhanging or parallel, but may be slightly tilted or have deviations. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but may be slightly tilted. Alternatively, it can be simplified to mean that the corresponding devices / components / elements are set in directions such as "horizontal", "vertical", "overhanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the scheme of the present invention.

[0057] In addition, the expressions “first”, “second”, “third”, etc., which appear in the terms, are merely used to distinguish the description of the same or similar components and should not be understood as emphasizing or implying the relative importance of specific components.

[0058] In addition, in the description of the embodiments of the present invention, "several", "plurality" and "a number" represent at least 2. It can be any number such as 2, 3, 4, 5, 6, 7, 8, 9, and even more than 9.

[0059] In addition, in the description of the technical solution of the present invention, unless otherwise clearly specified / defined / restricted, the terms "set", "install", "connect", "connected", "provided with", "laid", and "arranged" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, and can be welding, riveting, bolting, threading, and other commonly used connection means in the field. This connection can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal connection of two elements.

[0060] Example 1

[0061] like Figures 1 to 3 As shown, a construction method for turning over a dock underwater includes a dock structure 1 located at a storage point. Before turning over, an operator needs to move the entire dock structure 1 from the storage point to a destination for turning over. A connection portion 2 is provided on one side of the dock structure 1. The connection portion 2 includes a first connection portion 21 and a second connection portion 22 arranged side by side. When the dock structure 1 is launched into the water, the first connection portion 21 is close to a side of the dock structure 1 that is not in contact with the water surface, and the second connection portion 22 is close to a side of the dock structure 1 that is in contact with the water surface. The specific turning over method is as follows:

[0062] S1, preparing the dock door structure 1 for transportation from its storage point and transporting it to a designated destination;

[0063] S2. After arriving at the destination, erect and install the lifting device 3. The lifting device 3 should include a first lifting wheel 31 and a second lifting wheel 32. The first lifting wheel 31 is connected to the first connecting part 21, and the second lifting wheel 32 is connected to the second connecting part 22;

[0064] By connecting two separately controllable lifting wheels to the same side of the dock door structure 1, the two subsequent lifting wheels apply different pulling forces to the dock door structure 1, thereby ensuring the turning over of the dock door structure 1.

[0065] S3, firstly lift the second connection part 22 by the second lifting wheel 32, start the lifting device 3, gradually lift the second connection part 22, apply an upward pulling force to the dock door structure 1 by the second connection part 22, so that the dock door structure 1 starts to turn over, and at the same time, the first lifting wheel 31 does not apply force to the dock door structure 1 during the turning over of the dock door structure 1;

[0066] S4. When the dock door structure 1 is turned from the horizontal state to the vertical state, the first lifting wheel 31 and the second lifting wheel 32 are tightened synchronously, and the first lifting wheel 31 applies an upward pulling force to the first connecting portion 21, and the second lifting wheel 32 applies an upward pulling force to the second connecting portion 22, and the two pulling forces are of the same magnitude, so that the dock door structure 1 can always remain in the vertical state, which is convenient for the operators to cast the dock door in the later stage;

[0067] Furthermore, the turning over force process of the dock door structure 1 is specifically as follows: when the second lifting wheel 32 rises, an upward pulling force is applied to the second connecting portion 22 through the second lifting wheel 32. Since the second connecting portion 22 is located in the lower area of ​​the first connecting portion 21, the pulling force generated by the second lifting wheel 32 will generate a turning moment on the dock door structure 1, so that the dock door structure 1 begins to gradually turn over from the horizontal state;

[0068] Furthermore, during the turning over of the dock door structure 1, the first lifting wheel 31 is always connected to the first connection part 21, but the first lifting wheel 31 does not apply force to the first connection part 21 until the dock door structure 1 is completely turned over and is in a vertical state. The first lifting wheel 31 begins to apply an upward pulling force to the first connection, and the pulling force is consistent with the pulling force applied by the second lifting wheel 32, achieving a force balance, thereby ensuring the stability of the dock door device.

[0069] In one or more embodiments, the first lifting wheel 31 is provided with a first connecting cable 311, the first lifting wheel 31 is connected to the first connecting portion 21 through the first connecting cable 311, and the first lifting wheel 31 can control the rise and lowering of the first connecting cable 311, and the second lifting wheel 32 is provided with a second connecting cable 321, the second lifting wheel 32 is connected to the second connecting portion 22 through the second connecting cable 321, and the second lifting wheel 32 can control the rise and lowering of the second connecting cable 321;

[0070] Furthermore, during the turning over of the dock door structure 1, the second connecting cable 321 is always in a tense state, while the first connecting cable 311 is not subjected to force and is in a relaxed state. Figure 2 and Figure 3 shown.

[0071] Example 2

[0072] like Figure 1 and Figure 6 As shown, this embodiment 2 is a detailed transportation method of the dock door structure 1 in step S1 in embodiment 1. In embodiment 1, it is mentioned that the dock door structure 1 needs to be transported from the storage point to the destination and then turned over, and a first fender 11 is provided on one side of the dock door structure 1.

[0073] A construction method for turning over a dock door underwater. In Example 1, it is mentioned that the dock door structure 1 needs to be transported from a storage point to a destination before turning over. The specific transportation method is as follows:

[0074] S21. Before transporting the dock gate structure 1, the operator needs to calculate and analyze the water level of the designated route and calculate whether obstacles in the route will affect the transportation of the dock gate structure 1, to ensure that the dock gate structure 1 can be safely and stably transported to the destination;

[0075] S22, after ensuring that the dock door structure 1 can be transported normally, the air bag launching method is used to transport the dock door structure 1 from the storage point into the water;

[0076] S23. Ensure that the side of the dock gate structure 1 provided with the first fender 11 faces upward when the dock gate structure 1 enters the water. After the dock gate structure 1 enters the water, the operator connects the transportation device 4 to the dock gate structure 1, and the transportation device 4 provides power for the transportation of the dock gate structure 1, ensuring that the dock gate structure 1 moves according to the prescribed route.

[0077] In one or more embodiments, the calculation and analysis of the water level in step S21 mainly includes: measuring the water level in the route during low tide, calculating the height difference between the water surface during low tide and the channel obstacle, and comparing the height difference with the draft of the dock structure 1;

[0078] The water level of the route during high tide is measured, and the height difference between the water surface during high tide and the channel obstacles is calculated. The height difference is compared with the draft of the dock gate structure 1 to determine whether the dock gate structure 1 can be normally navigated on the route.

[0079] In one or more embodiments, the dock door structure 1 is erected at the storage point through piers. In step S22, the main steps of the airbag launching method are as follows:

[0080] S221, setting a ground anchor at the storage point, installing a winch on the ground anchor, and towing the dock door structure 1 by the winch;

[0081] S222, placing airbags on the left and right sides and the bottom of the dock gate structure 1, inflating each airbag evenly, and lifting the dock gate structure 1 through the airbags. When the dock gate structure 1 is not connected to the pier, the operator starts to knock on the pier.

[0082] S223. After the piers are cleaned, the airbag is used to move the dock door device to the launching site under the traction of the windlass, and wait for the tide to reach the right place;

[0083] S224. After moving to the launching site, recheck all airbag angles and air pressures, and adjust the layout in time to keep the airbags on the left and right sides synchronized to ensure a smooth launching process.

[0084] In one or more embodiments, in step S23, the transport device 4 includes a main tugboat 41, which is connected to the dock door structure 1. The main tugboat 41 is used to guide the dock door structure 1 to navigate according to the planned route and provide power for the dock door structure 1 to transport. The transport device 4 also includes an auxiliary tugboat 42, which is arranged parallel to the dock door structure 1. The auxiliary tugboat 42 is used to prevent the dock door structure 1 from shaking during transportation, causing bumps, such as Figure 6 shown.

[0085] Example 3

[0086] like Figures 4 to 5 As shown, this embodiment 3 is a method in which the dock door structure 1 in embodiment 1 is turned over and cast, and then turned over again, and the second turning over is used to install the second fender 12;

[0087] When the dock structure 1 is transported, the operator only installs the first fender 11 on the side of the dock structure 1 that does not contact the water surface. This is because if the fender is located on the side of the dock structure 1 that contacts the water surface, when the dock structure 1 moves, the water flow will produce resistance to the fender, thereby causing the fender to peel off from the dock structure 1.

[0088] A construction method for turning over a dock door underwater, the specific method is as follows:

[0089] S31, when the dock door structure 1 is turned over to a vertical state, the operator places a floating object 5 at the end of the dock door structure 1 that contacts the water surface;

[0090] The float 5 supports one end of the dock structure 1 through buoyancy, reducing its degree of sinking into the water, making the other end easier to flip. This helps to adjust the center of gravity of the dock structure 1;

[0091] S32, lowering the first connecting cable 311 through the first lifting wheel 31, while keeping the state of the second lifting wheel 32 unchanged. At this time, the length of the first connecting cable 311 increases, so that the stress state of the dock door structure 1 changes;

[0092] Lowering the first connecting cable 311 will reduce the tension applied by the first lifting wheel 31, so that the dock door structure 1 will readjust the stress state under the action of the second lifting wheel 32, thereby pushing the dock door structure 1 to flip. At this time, the dock door structure 1 will be affected by the buoyancy from the floating object 5 and the tension of the second lifting wheel 32;

[0093] S33, when the dock door structure 1 is in the process of flipping, the second lifting wheel 32 starts to be lowered to reduce the pulling force exerted on the second connecting portion 22, and at this time, the second connecting cable 321 is not subjected to force;

[0094] S34, when the first fender 11 of the dock door structure 1 is completely in contact with the water surface, the second lifting wheel 32 and the first lifting wheel 31 are stopped;

[0095] After the dock door structure 1 is completely turned over, the operation of the lifting wheel is stopped to fix the dock door structure 1 in the new position. At this time, the dock door structure 1 should be stably in the target position to prepare for the subsequent installation of the second fender 12.

[0096] The present invention arranges a floating object 5 to perform a secondary turn-over of the dock door structure 1, so as to facilitate the construction personnel to install the second fender 12. By placing a floating object 5 at one end of the dock door structure 1 in contact with the water surface, the buoyancy of the floating object 5 is used to support one end of the dock door structure 1, thereby reducing the degree of its sinking into the water and making the other end easier to turn over. This adjustment effectively changes the center of gravity of the dock door, which helps to stabilize and control the turning-over process. Then, through the cooperation of the first connecting cable 311 and the second connecting cable 321, the secondary turning-over of the dock door structure 1 is completed, so that the operator can directly perform construction on the side where the second fender 12 needs to be installed, thereby improving the safety and efficiency of construction.

[0097] In one or more embodiments, during the overturning of the dock structure 1, due to the buoyancy of the float 5 itself, when the dock structure 1 turns over, the float 5 automatically breaks away from the contact with the dock structure 1. Figure 5 shown.

[0098] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A construction method for underwater turning over of a dock door, characterized in that: The invention comprises a dock door structure (1) located at a storage point, wherein a connecting portion (2) is provided on one side of the dock door structure (1), wherein the connecting portion (2) comprises a first connecting portion (21) and a second connecting portion (22), and the construction method is as follows: S1, floating the dock door structure (1) from the storage point to the destination; S2, subsequently setting up a lifting device (3), wherein the lifting device (3) is connected to the first connecting portion (21) and the second connecting portion (22) respectively; S3, lifting the second connection part (22) to flip the dock door structure (1), and the lifting device (3) synchronously tightens the first connection part (21) and the second connection part (22); S4, completing the underwater turning over of the dock door structure (1).

2. A construction method for underwater turning over of a dock door according to claim 1, characterized in that: The dock door structure (1) is a sealed box body, a plurality of cabins are arranged inside the dock door structure (1), and a first fender (11) is arranged on one side of the dock door structure (1). When executing step S1, the following steps are specifically included: S21, analyzing and calculating the transportation water level, and detecting obstacles on the transportation path; S22, after ensuring normal navigation, using an air bag to move the dock door structure (1) located at the storage point to the water surface; S23, ensuring that the first fender (11) is located on the side away from the water surface, and connecting the transport device (4) to the dock door structure (1); S24, transporting the dock door structure (1) to a destination via the transport device (4).

3. A construction method for underwater turning over of a dock door according to claim 2, characterized in that: The transport device (4) comprises a main tugboat (41), the main tugboat (41) is connected to the dock door structure (1), and the main tugboat (41) is used to drag the dock door structure (1) to move; the transport device (4) further comprises an auxiliary tugboat (42), the auxiliary tugboat (42) is arranged in parallel with the dock door structure (1), and the auxiliary tugboat (42) is connected to the dock door structure (1), and the auxiliary tugboat (42) is used to prevent the dock door structure (1) from shaking when moving.

4. The construction method for underwater turning over of a dock door according to claim 2, characterized in that: The lifting device (3) comprises a first lifting wheel (31), on which a first connecting cable (311) is provided. The lifting device (3) further comprises a second lifting wheel (32), on which a second connecting cable (321) is provided. When executing step S2, the following steps are included: S41, after the dock door structure (1) is transported to the destination; S42, the first connecting cable (311) is connected to the first connecting portion (21), and the second connecting cable (321) is connected to the second connecting portion (22); S43, after the connection is completed, the connection between the dock door structure (1) and the transportation device (4) is released.

5. The construction method for underwater turning over of a dock door according to claim 4, characterized in that: The main body of the lifting device (3) is a lifting vessel.

6. The construction method for underwater turning over of a dock door according to claim 4, characterized in that: The second lifting wheel (32) and the first lifting wheel (31) can work independently. When executing step S3, the following steps are included: S61, the second lifting wheel (32) applies an upward pulling force to the second connecting portion (22); S62: After the second connection portion (22) is subjected to force, the dock door structure (1) gradually turns over; S63, when the second connection part (22) moves to the top, the first lifting wheel (31) synchronously tightens the first connection part (21); S64, the second lifting wheel (32) and the first lifting wheel (31) synchronously apply force to the second connecting part (22) and the first connecting part (21) until the dock door structure (1) stops moving.

7. The construction method for underwater turning over of a dock door according to claim 6, characterized in that: In step S44, after the dock door structure (1) stops moving, the cabin is cast in sections, and after the casting is completed, it is turned over for the second time.

8. The construction method for underwater turning over of a dock door according to claim 7, characterized in that: The method for turning over the dock door structure (1) twice is as follows: S81, arranging a floating object (5) at the end of the dock door structure (1) in contact with the water surface; S82, then, the first lifting wheel (31) lowers the first connecting cable (311), and the second lifting wheel (32) remains stationary; S83, the dock door structure (1) is overturned due to force; S84, after the dock door structure (1) flips over, the second lifting wheel (32) starts to lower; S85. After the side of the dock door structure (1) provided with the first fender (11) is completely in contact with the water surface, the second lifting wheel (32) and the first lifting wheel (31) stop working.

9. The construction method for underwater turning over of a dock door according to claim 8, characterized in that: In step S81, the floating object (5) abuts against an end of the dock door structure (1) away from the first connecting portion (21).

10. A construction method for underwater turning over of a dock door according to claim 9, characterized in that: In step S85, after the dock door structure (1) is flipped over, a second fender (12) is provided on a side of the dock door structure (1) away from the water surface.

Images